CN115432148B - Automatic righting device for deep sea bottom support rod and operation method - Google Patents

Abstract

The automatic righting device of the deep sea bottom-sitting support rod comprises a sea bottom surface, wherein the bottom-sitting support rod is inserted into the sea bottom surface, a dielectric film is sleeved outside the bottom-sitting support rod, the upper part and the lower part of the dielectric film are respectively restrained and sealed in vertical positions through a first rubber fastening ring and a second rubber fastening ring, and a film cavity is formed inside the dielectric film between the first rubber fastening ring and the second rubber fastening ring; the novel rubber fastening device comprises a first rubber fastening ring, a second rubber fastening ring, a third rubber fastening ring, a fourth rubber fastening ring and a fourth rubber fastening ring, wherein the fourth rubber fastening ring is arranged on the upper side of the first rubber fastening ring; the bottom of the bottoming support rod is provided with a bottoming switch, and the upper part of the bottoming switch is connected with the submersible vehicle body through an electric lead. Can operate in full sea depth, has low noise and full automatic operation, and provides a new device and method for the safe sitting of the deep sea submersible support rod.

Description

Automatic righting device for deep sea bottom support rod and operation method

Technical Field

The invention relates to the technical field of auxiliary equipment of deep sea diving equipment, in particular to an automatic righting device for a deep sea bottom-sitting support rod and an operation method.

Background

In deep sea exploration, a deep sea submersible vehicle is unpowered to submerge to the deep sea bottom and is inserted into the sandy sea bottom by adopting a single support rod. Under the action of ocean current disturbance, hydrodynamic force abnormal force in the submergence process and the like, the support rod cannot be vertically inserted into the seabed, and a certain inclination angle is often formed. The deflection of the struts can adversely affect the use of the device and may be eliminated by other measures. Furthermore, in order to increase the stability of the seat bottom, the depth of insertion into the sea bottom needs to be as large as possible, against ocean current disturbances. In the process of long-term residence of the submarine, the submarine hidden stream is extremely easy to be influenced, the depth of the submarine is likely to be reduced, and the stability of the equipment is reduced. Thus, the insertion depth needs to be re-straightened and maintained, i.e. an automatic anti-disturbance function is required. To cope with deep sea high pressure, the submersible pressure tank is often required to be smaller in size and larger in thickness, and the pressure tank is difficult to provide enough positive buoyancy. Thus, the submersible will typically have a negative buoyancy under water. And the excessive negative buoyancy of the submersible can cause the submerging speed of the submersible to be too high, thereby bringing adverse effects to the safety of the submersible. Accordingly, there is an urgent need to provide a method of reducing the submergence speed.

In order to solve the above problems, the prior art scheme has the following disadvantages:

increasing the submerging speed can increase the impact force of bottoming and increase the insertion depth. However, the safety risk of the seat bottom is increased. The submerging speed is reduced, and a mode of increasing the buoyancy block to reduce negative buoyancy can be adopted. However, the deep sea buoyancy block is expensive to manufacture, and the construction cost is greatly increased. After bottoming, if mechanical structure is adopted to assist in centralizing, problems of deep sea pressure resistance, long-term residence corrosiveness and reliability can be caused. The scheme needs to adopt a deep sea motor to solve the pressure-resistant problem in the ultra-high pressure environment, so that the manufacturing cost is high and the reliability is insufficient. If a gear-rack structure is adopted, when sitting on the bottom, raised seabed sediment can be added into the gear gap, and the sediment clamping stagnation is possible. If the depth of the deep submergence is too large, the oil cylinder pushes the support rod to centralize, so that very large thrust is required, the weight of the mechanical structure is large, and the load capacity of the submergence device is reduced. If the high-frequency vibration push rod is adopted to slowly centralize, the motor or the hydraulic source is required to be started frequently, noise can be generated, and the concealment of the equipment is reduced. The long-term standby automatic disturbance rejection needs to be equipped with more sensors and mechanical equipment, and the system is complex and has poor reliability.

Therefore, a new device and a method which can solve the problems and realize wide adaptability, simple structure, safety and reliability are urgently needed.

Disclosure of Invention

The applicant provides an automatic righting device for a deep sea bottom supporting rod and an operation method aiming at the defects in the prior art, so that various problems in the prior art can be effectively solved, the working reliability is greatly improved, the full-automatic operation is convenient, and the noise is low.

The technical scheme adopted by the invention is as follows:

the automatic righting device for the deep sea bottom-sitting support rod comprises a sea bottom surface, wherein the bottom-sitting support rod is inserted into the sea bottom surface, a dielectric film is sleeved outside the bottom-sitting support rod, the upper part and the lower part of the dielectric film are respectively restrained and sealed in vertical positions through a first rubber fastening ring and a second rubber fastening ring, and a film cavity is formed inside the dielectric film between the first rubber fastening ring and the second rubber fastening ring; the novel rubber fastening device comprises a first rubber fastening ring, a second rubber fastening ring, a third rubber fastening ring, a fourth rubber fastening ring and a fourth rubber fastening ring, wherein the fourth rubber fastening ring is arranged on the upper side of the first rubber fastening ring; the bottom of the bottoming support rod is provided with a bottoming switch, and the upper part of the bottoming switch is connected with the submersible vehicle body through an electric lead.

The further technical scheme is as follows:

the main body of the seat bottom supporting rod is of a cylindrical structure, a flow channel is arranged in the vertical direction inside the seat bottom supporting rod, an upper water flowing hole communicated with the side wall of the seat bottom supporting rod is arranged above the flow channel, a lower water flowing hole is arranged at the bottom of the seat bottom supporting rod, and a water-soluble solid plug is arranged at the lower water flowing hole.

The upper water flowing hole is positioned in the film cavity and is close to the upper side.

Before submerging, the film cavity and the branch flow passage are filled with light oil.

The dielectric film is in a circular ring structure after being unfolded.

The dielectric body film is composed of five layers of materials, the middle of the dielectric body film is made of dielectric body materials, the upper end and the lower end of the dielectric body materials are respectively provided with a first flexible electrode and a second flexible electrode, the outer layer of the first flexible electrode is provided with a first protective film, and the outer layer of the second flexible electrode is provided with a second protective film.

The outer diameter of the circular ring rod is larger than that of the second rubber fastening ring.

The structure of the bottoming switch is as follows: the novel waterproof socket comprises a first guide ring and a second guide ring which are fixed on a seat bottom supporting rod at intervals from top to bottom, a first spring is welded between the first guide ring and the second guide ring, a first magnet is adhered to the right end of the second guide ring, a control box shell is welded at the end part of the first guide ring, insulating gas or liquid is filled in the control box shell, a conducting plate is arranged at the inner bottom of the control box shell, the second magnet is adhered to the lower conducting plate through glue, the polarities of the first magnet and the second magnet are opposite, a second spring is arranged between the second magnet and the inner top surface of the control box shell, a speed sensor is arranged on the outer side of the control box shell, and a controller is arranged in the control box shell, and a watertight connector is arranged on the control box shell.

The second guide ring slides up and down along the bottom supporting rod, and the conducting strip and the box body shell are made of conducting metal materials without magnetism.

An operation method of an automatic righting device for a deep sea bottom support rod.

As a further improvement of the above technical scheme:

setting the insertion depth of the bottom supporting rod: the height of the control box shell on the bottom supporting rod is adjusted, and the target depth of the bottom supporting rod inserted into the seabed is set;

then, control parameter settings: the remote control device is communicated with the controller to set parameters in an automatic control program in the controller, and the parameters are mainly three as follows:

1. maximum submergence speed Vm in the free submergence process;

2. the waiting time Tw for turning on the driving voltage again after sitting on the bottom is usually set to 10 minutes;

3. in the process of inserting the righting or piling auxiliary supporting rod, the stabilizing time period Ts of the single starting driving voltage is also Ts, and the interval is usually set to be 5 minutes;

secondly, filling oil into the equipment:

inverting the device before draining, pouring light oil through the water holes until the film cavity and the support rod flow channel are full;

the water-soluble solid plug 104 is plugged into the water inlet 103 to plug the outlet, so that the light oil leakage before water draining is prevented.

Unpowered submergence under the action of negative buoyancy;

the bottoming switch is in an open state in the submerging process;

after the water is drained, the water-soluble solid plug can be rapidly dissolved, the water flowing hole is opened, the light oil is communicated with the sea water, and the pressure is balanced; in the submerging process, the base support rod is basically in a vertical state; the density of the light oil is smaller than that of the water and is always in the flow channel and the film cavity under the effect of positive buoyancy, so that the light oil continuously provides positive buoyancy for the submersible vehicle in the submersible vehicle submerging process, the light oil is positioned above the submersible vehicle, the floating center of the submersible vehicle is improved, the stability is high, and the vertical state of the base support rod is maintained to be inserted into the seabed;

with the increase of the submergence speed, the hydrodynamic force is gradually increased to push the film to turn upwards, and the film is inverted cone-shaped and covers the upper annular support rod component;

B. constant speed submergence function:

in the initial stage of submergence, the submergence speed is gradually increased until the submergence speed is larger than the set maximum submergence speed Vm, when the controller senses the state through the speed sensor, the driving voltage of the dielectric film is increased, the stretching of the dielectric film is promoted, the windward area is increased, the resistance is increased, the speed is reduced until the submergence speed is reduced to Vm, and the submergence speed is maintained;

C. And (3) automatically righting the supporting rod:

after the submersible is bottomed, the bottom support rod is inserted into the seabed to normally have a certain inclination, and at the moment, the speed sensor measures that the speed is suddenly reduced to zero, so that the controller is triggered to start an automatic righting program;

after the righting program is started, the controller turns off the driving power supply of the dielectric film and turns on after Tw minutes, the dielectric film is powered off and soft during the period, naturally sags under the action of negative buoyancy of the dielectric film to be in a right cone shape, and after that, the controller intermittently turns on the driving voltage for a plurality of times to enable the sitting bottom support rod to be righted, the duration of the single-time turning on the driving voltage is Ts, and the righting process mainly comprises two processes:

a) Sand sucking and drag reducing process:

when the driving voltage is turned on, the dielectric film stretches in equal proportion, so that the cavity expands, negative pressure is formed in the cavity, sediment water on the sea floor is sucked, sediment is deposited at the bottom of the cavity in the time Ts for stabilizing the driving voltage, the upper layer is light oil or clear sea water, after the driving voltage is turned off, the dielectric film contracts and recovers, liquid in the extrusion cavity flows into the sea bottom at the bottom of the sitting bottom support rod, and as the upper water flowing hole is positioned above the cavity, the light oil or water at the upper layer is extruded under the support rod preferentially during extrusion, the sediment amount at the bottom of the sitting bottom support rod is gradually reduced through multiple extrusion, the water content or the oil content of sediment at the bottom is also gradually increased, and finally the resistance of the centralizing support rod is reduced;

b) Shaking and righting the supporting rod:

when the driving voltage is started, the dielectric film is elongated in equal proportion, the dielectric film is conical and is axisymmetric relative to the sitting bottom support rod, the lower part of the inclined side is firstly contacted with the sea floor after the extension, the dielectric film can push the sea floor to generate a reaction force after the extension, and the sitting bottom support rod is pushed to be righted to form single pushing;

through repeated sand suction and shaking of the bottom support rod, the thrust required by righting is greatly reduced, and the righting of the bottom support rod is promoted;

finally, the inclination of the bottom supporting rod is gradually reduced until the dielectric film on the other side also becomes a functional bottom, and the bottom supporting rod is vertical to the seabed, so that the righting work of the bottom supporting rod is realized;

D. automatically adjusting the depth of insertion into the sea floor:

after righting, if the depth of the bottom-sitting support rod inserted into the seabed is insufficient, the bottom-touching switch does not touch the bottom, the circuit is still in an on state, the controller can continuously control the shrinkage and the extension of the dielectric film, and the bottom-sitting support rod is promoted to be continuously inserted into the seabed, and specifically, the method comprises the following two processes:

a) Sand sucking process:

the dielectric film stretches outwards after being electrified, the pressure in the cavity is reduced, silt water at the bottom of the sitting bottom support rod is sucked into the cavity through the flow channel, the controller maintains the voltage for a period of time, the silt in the cavity is settled, clear water or light oil is arranged above the cavity, the controller changes the voltage, the dielectric film contracts to compress the cavity, upper oil or water is extruded into the bottom of the sitting bottom support rod, the silt at the bottom of the sitting bottom support rod is gradually reduced through the operation for a plurality of times, the support of the sitting bottom support rod is gradually weakened, and the sitting bottom support rod is gradually submerged under the action of negative buoyancy of the submersible.

The conical film below the bottom support rod is synchronously stretched, the conical film pushes the seabed after being stretched to form upward reverse thrust to the bottom support rod, after the conical film is relaxed, the supporting force to the bottom support rod is eliminated, the bottom support rod is sunk under the action of negative buoyancy, so that a piling process of lifting and sinking the bottom support rod is formed, the seabed substrate is effectively loosened through repeated piling, and piling and inserting of the bottom support rod are facilitated;

the insertion depth of the seat bottom support rod can be gradually increased through repeated sand suction and piling, so that the difficulty of one-time pressing of the seat bottom support rod for insertion is avoided;

E. automatically triggering a standby process:

as the insertion depth of the bottom-sitting support rod increases, the second guide ring at the bottom starts to touch the bottom, the second guide ring gradually moves upwards on the bottom-sitting support rod, the distance between the first magnet and the second magnet is reduced, the second magnet is pushed by magnetic repulsive force to move upwards, the second magnet drives the conducting strip to leave the control box shell for suspension, the circuit is disconnected, the system is powered off and standby, and at the moment, the set depth of the inserted seabed is reached;

F. and (3) a submarine substrate collecting process:

in the process of centralizing and piling insertion, the film cavity continuously and intermittently expands and contracts to suck in seabed sediment, and after sedimentation, clear water is sprayed out to collect seabed sediment, after the sitting is finished, sediment is stored in the film cavity above, and after the task is finished, the sediment floats upwards along with the submersible vehicle;

G. Automatic anti-disturbance function:

in the long-term resided seabed, ocean current disturbance can lead to the reduction of the depth of the submarine support rod inserted into the seabed, and the device can automatically resist disturbance and recover to a vertical state and the original set insertion depth, and the specific process is as follows:

once the bottom supporting rod is pulled up, the supporting force of the seabed on the circular ring disappears, the guide ring naturally sags under the action of gravity, the first magnet sags along with the second guide ring, the distance between the first magnet and the second magnet is increased, the magnetic repulsive force of the second magnet is reduced, the second spring pushes the second magnet to press the conductive sheet to the control box shell, at the moment, the circuit is communicated, the dielectric film is acted by driving voltage, the centering and piling operation is started, and the system is closed to stand by until the bottom supporting rod is inserted into a set depth;

H. auxiliary bottom-off pulling-out process:

when the bottom supporting rod is pulled out from the bottom, negative pressure can be formed below the bottom supporting rod to increase the bottom-off adsorption force, so that the bottom-off difficulty is caused, the bottom supporting rod is provided with an inner runner, the upper part of the bottom supporting rod is communicated into the film cavity, and when the bottom-off is carried out, water in the film cavity can be sucked into the bottom below the bottom supporting rod through the runner to carry out filling compensation, so that the adsorption force is greatly reduced, and the bottom-off is convenient.

The beneficial effects of the invention are as follows:

the invention has compact and reasonable structure and convenient operation, utilizes the characteristics of softness and electrified deformation of the dielectric film, actively controls the diving and sitting on the bottom, assists the sitting-bottom supporting rod to vertically insert into the seabed, increases the insertion depth and enhances the safety of sitting on the bottom. In the submerging process, the film is turned over to be in an inverted cone shape, plays a role of stabilizing wings, and can adjust the submerging speed. After sitting on the bottom, the film stretches to support the supporting rod to straighten, and then pushes the supporting rod to float upwards and downwards to pile and increase the insertion depth. The concave cavity of the film stretches to form negative pressure, sediment below the supporting rod is sucked out, and the supporting rod is promoted to be inserted. The righting and piling processes are carried out for a plurality of times in a small amplitude, so that the required thrust is greatly reduced. When the support rod is inserted into a specific depth, the power is automatically cut off for standby. In the long-term standing process, once the insertion depth of the device is reduced, the device is automatically triggered to restore to the set depth. The device is not afraid of external pressure, can operate in full sea depth, has low noise and full automatic operation, and provides a new device and method for the safe sitting of the deep sea submersible support rod.

Meanwhile, the invention has the following advantages:

(1) In the unpowered submerging process, the light oil bag is submerged, so that the stability is improved, and the light oil bag is convenient to maintain a vertical state and is inserted into the sea bottom. The submergence speed can be reduced allowing the apparatus to have a greater negative buoyancy. Automatic control realizes constant-speed submergence.

(2) After the support rod is inserted into the sea floor, the functions of righting and piling are automatically started, and after the setting task is completed, the support rod is automatically closed.

(3) The dielectric film is stretched for a plurality of times for realizing the righting and downward insertion of the supporting rod, so that the thrust requirement is greatly reduced, and the volume and the weight of the equipment are reduced.

(4) The deep sea motor or hydraulic equipment is not needed, so that a main noise source is eliminated, and the concealment is greatly improved.

(5) In long-term residence, when the depth of the support rod inserted into the seabed is reduced, the device can be automatically started to maintain a vertical state and a certain insertion depth.

(6) The pressure-resistant problem does not exist, and the hydraulic pump is suitable for the whole sea depth.

(7) When the device leaves the bottom, the adsorption force of the seabed to the supporting rod is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic diagram of a dielectric thin film cavity according to the present invention.

Figure 3 is a cross-sectional view of a base strut of the present invention.

Fig. 4 is a schematic view of a portion of the bottoming switch (on state) of the present invention.

Fig. 5 is a partial schematic view of the bottoming switch of the present invention (closed state).

FIG. 6 is an expanded view of the film of the present invention.

FIG. 7 is a cross-sectional view of a film of the present invention.

Fig. 8 is a simplified schematic of the automatic righting process of the present invention.

Wherein:

0. a sea floor;

1. a bottom supporting rod;

101. A flow passage; 102. an upper water flow hole; 103. a lower water flow hole; 104. a water-soluble solid plug;

2. a dielectric film;

2101. a first protective film; 2102. a second protective film;

2201. a first flexible electrode; 2202. a flexible electrode II;

23. a dielectric material;

3. a circular ring support bar assembly;

31. a circular ring rod; 32. a support rod; 33. a second rubber fastening ring;

4. a bottoming switch;

4101. a first guide ring; 4102. a second guide ring;

42. a fastening nut;

4301. a first spring; 4302. a second spring;

4401. a first magnet; 4402. a second magnet;

45. a control box housing; 46. a conductive sheet; 47. a controller; 48. a watertight connector; 49. a speed sensor; 410. a signal line;

5. a first rubber fastening ring;

electrical lead system:

61. a first electrical lead; 62. a second electric lead; 63. a third electric lead; 64. fourth electric lead; 65. a fifth electric lead;

7. a film cavity;

8. a submersible body;

the submersible body comprises a pressure-resistant cabin, a battery, a detection device and the like.

Detailed Description

The following describes specific embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 8, the deep sea bottom support rod automatic righting device of the present embodiment comprises a sea bottom surface 0, a bottom support rod 1 is inserted into the sea bottom surface 0, a dielectric film 2 is sleeved outside the bottom support rod 1, the upper part and the lower part of the dielectric film 2 are respectively restrained and sealed in vertical positions through a first rubber fastening ring 5 and a second rubber fastening ring 33, and a film cavity 7 is formed inside the dielectric film 2 between the first rubber fastening ring 5 and the second rubber fastening ring 33; the novel rubber fastening device further comprises a circular ring support rod assembly 3, a circular ring rod 31 is arranged above the circular ring support rod assembly 3, four support rods 32 are uniformly inserted into the circular ring rod 31 at intervals in the circumferential direction, the upper parts of the support rods 32 are welded with the circular ring rod 31, and the lower parts of the support rods 32 are inserted into a second rubber fastening ring 33; the bottom of the sitting bottom support rod 1 is provided with a bottoming switch 4, and the upper part of the bottoming switch 4 is connected with a submersible body 8 through an electric lead.

The main body of the bottom support rod 1 is of a cylindrical structure, a flow channel 101 is arranged in the vertical direction inside the bottom support rod 1, an upper water flowing hole 102 communicated with the side wall of the bottom support rod 1 is arranged above the flow channel 101, a lower water flowing hole 103 is arranged at the bottom of the bottom support rod 1, and a water-soluble solid plug 104 is arranged at the position of the lower water flowing hole 103.

The upper water flow hole 102 is located inside the film chamber 7 and is close to the upper side.

Before submerging, the membrane cavity 7 and the strut runner 101 are filled with light oil.

The dielectric film 2 is developed to form a circular ring structure.

The dielectric film 2 is composed of five layers of materials, a dielectric material 23 is arranged in the middle of the dielectric material, a first flexible electrode 2201 and a second flexible electrode 2202 are respectively arranged at the upper end and the lower end of the dielectric material 23, the outer layer of the first flexible electrode 2201 is a first protective film 2101, and the outer layer of the second flexible electrode 2202 is a second protective film 2102.

The outer diameter of the annular rod 31 is larger than the outer diameter of the second rubber fastening ring 33.

The structure of the bottoming switch 4 is as follows: the device comprises a first guide ring 4101 and a second guide ring 4102 which are fixed on a seat bottom support rod 1 at an upper and lower interval, wherein a first spring 4301 is welded between the first guide ring 4101 and the second guide ring 4102, a first magnet 4401 is stuck to the right end of the second guide ring 4102, a control box shell 45 is welded to the end part of the first guide ring 4101, insulating gas or liquid is filled in the control box shell 45, a conductive sheet 46 is arranged at the inner bottom of the control box shell 45, the second magnet 4402 is stuck to the lower conductive sheet 46 through glue, the polarities of the first magnet 4401 and the second magnet 4402 are opposite, a second spring 4302 is arranged between the second magnet 4402 and the inner top surface of the control box shell 45, a speed sensor 49 is arranged at the outer side of the control box shell 45, a controller 47 is arranged in the control box shell 45, and a watertight connector 48 is arranged on the control box shell 45.

The second guide ring 4102 slides up and down along the bottom support rod 1, and the conductive sheet 46 and the control box housing 45 are made of conductive non-magnetic metal materials.

The operating method of the deep sea bottom support rod automatic righting device of the embodiment.

Setting the insertion depth of the seat bottom strut 1: the height of the control box shell 45 on the bottom seat support rod 1 is adjusted, and the target depth of the bottom seat support rod 2 inserted into the seabed is set;

then, control parameter settings: the remote control device communicates with the controller 47 to set parameters in an automatic control program in the controller 47, mainly comprising the following three steps:

1. maximum submergence speed Vm in the free submergence process;

2. the waiting time Tw for turning on the driving voltage again after sitting on the bottom is usually set to 10 minutes;

3. in the process of inserting the righting or piling auxiliary supporting rod, the stabilizing time period Ts of the single starting driving voltage is also Ts, and the interval is usually set to be 5 minutes;

secondly, filling oil into the equipment:

the device is inverted before water is drained, and light oil is poured into the device through a drainage hole 103 until the thin film cavity 7 and the support rod runner 101 are full;

the water-soluble solid plug 104 is plugged into the water outlet 103 to plug the outlet, so that the light oil leakage before water is prevented.

Unpowered submergence under the action of negative buoyancy;

the bottoming switch 4 is in an on state in the submerging process;

after the water is discharged, the water-soluble solid plug 104 can be rapidly dissolved, the lower water flowing hole 103 is opened, and the light oil is communicated with the sea water, so that the pressure is balanced; during the submergence, the base strut 1 is substantially in a vertical state; the density of the light oil is smaller than that of the water and is always positioned in the flow channel 101 and the film cavity 7 under the effect of positive buoyancy, so that the light oil continuously provides positive buoyancy for the submersible vehicle in the submerging process, the light oil is positioned above the submersible vehicle, the floating center of the submersible vehicle is improved, the stability is high, and the vertical state of the base support rod 1 is maintained to be inserted into the seabed;

with the increase of the submergence speed, the hydrodynamic force is gradually increased to push the film to turn upwards, take on an inverted cone shape and cover the upper annular support rod assembly 3;

B. constant speed submergence function:

at the initial stage of the submergence, the submergence speed gradually increases until the submergence speed is greater than the set maximum submergence speed Vm, and when the controller 47 senses this state through the speed sensor 49, the driving voltage of the dielectric film 2 is increased, the stretching of the dielectric film 2 is promoted, the windward area is increased, the resistance is increased, the speed is reduced until the submergence speed is reduced to Vm, and the speed submergence is maintained;

C. And (3) automatically righting the supporting rod:

after the submersible has been bottomed, the bottom struts 1 are inserted into the seabed, typically with a certain inclination, at which point the speed sensor 49 measures a sudden drop of speed to zero, triggering the controller 47 to start the automatic righting procedure;

after the righting procedure is started, the controller 47 turns off the driving power supply of the dielectric film 2 and turns on after Tw minutes, during which the dielectric film 2 is powered off and soft, naturally sags under the action of the negative buoyancy of the dielectric film 2 to become a right cone shape, after which the controller 47 intermittently turns on the driving voltage for several times to cause the bottom support rod 1 to be righted, the duration of the single turn on the driving voltage is Ts, and the righting procedure mainly consists of two procedures:

a) Sand sucking and drag reducing process:

when the driving voltage is started, the dielectric film 2 stretches in equal proportion, so that the film cavity 7 expands, negative pressure is formed in the cavity, sediment water at the bottom of the cavity is sucked in, sediment is deposited at the bottom of the cavity in the time Ts for stabilizing the driving voltage, the upper layer is light oil or clear seawater, after the driving voltage is closed, the dielectric film 2 contracts and recovers, liquid in the extrusion cavity flows into the bottom of the bottom supporting rod, and as the upper water flowing hole 102 is positioned above the cavity, the light oil or water at the upper layer is extruded under the supporting rod preferentially during extrusion, the sediment amount at the bottom of the bottom supporting rod 1 is gradually reduced through repeated extrusion, the water content or the oil content of sediment at the bottom is also gradually increased, and finally the resistance of the supporting rod is reduced;

b) Shaking and righting the supporting rod:

when the driving voltage is started, the dielectric film 2 is elongated in equal proportion, the dielectric film 2 is conical, and is axisymmetric relative to the sitting-bottom support rod 1, the lower part of the inclined side is firstly contacted with the sea floor after the elongation, the dielectric film 2 can push the sea floor to generate a reaction force after the elongation, and the sitting-bottom support rod 1 is pushed to be righted, so that single pushing is formed;

through repeated sand suction and shaking of the seat bottom supporting rod 1, the thrust required by righting is greatly reduced, and the seat bottom supporting rod 1 is promoted to righting;

finally, the inclination of the bottom supporting rod 1 is gradually reduced until the dielectric film 2 on the other side also becomes a functional bottom, and the bottom supporting rod 1 is vertical to the seabed, so that the righting work of the bottom supporting rod 1 is realized;

D. automatically adjusting the depth of insertion into the sea floor:

after righting, if the bottom support rod 1 is not inserted into the seabed to a sufficient depth, the bottoming switch 4 is not bottomed, the circuit is still in an on state, and the controller 47 continuously controls the shrinkage and the elongation of the dielectric film 2 to promote the bottom support rod 1 to be inserted into the seabed, specifically, the following two processes are carried out:

a) Sand sucking process:

the dielectric film 2 stretches outwards after being electrified, the pressure in the film cavity 7 is reduced, silt water at the bottom of the seat bottom supporting rod 1 is sucked into the film cavity 7 through the flow channel 101, the controller 47 maintains the voltage for a period of time, the silt in the film cavity 7 is settled, clear water or light oil is arranged above the silt, the controller 47 changes the voltage, the dielectric film 2 contracts, the film cavity 7 is compressed, upper oil or water is extruded into the bottom of the seat bottom supporting rod 1, the silt at the bottom of the seat bottom supporting rod 1 is gradually reduced through the operation for a plurality of times, the support of the seat bottom supporting rod 1 is gradually weakened, and the seat bottom supporting rod 1 is gradually submerged under the action of the negative buoyancy of the submersible.

The conical film below the bottom support rod 1 is synchronously stretched, the conical film pushes the seabed after being stretched to form upward reverse thrust to the bottom support rod 1, after the conical film is relaxed, the supporting force to the bottom support rod 1 disappears, the bottom support rod 1 sinks under the action of negative buoyancy, so that a piling process for lifting and sinking the bottom support rod 1 is formed, the seabed substrate is effectively loosened through repeated piling, and piling and inserting of the bottom support rod 1 are facilitated;

the insertion depth of the seat bottom support rod 1 can be gradually increased through repeated sand suction and piling, so that the difficulty of one-time pressing of the seat bottom support rod 1 is avoided;

E. automatically triggering a standby process:

as the insertion depth of the bottom seat support rod 1 increases, the second guide ring 4102 at the bottom starts to bottom, the second guide ring 4102 gradually moves upwards on the bottom seat support rod 1, the distance between the first magnet 4401 and the second magnet 4402 decreases, the magnetic repulsive force pushes the second magnet 4402 to move upwards, the second magnet 4402 drives the conductive sheet 46 to leave the control box shell 45 to suspend, the circuit is disconnected, and the system is powered off for standby, at the moment, the set insertion depth of the seabed is reached;

F. and (3) a submarine substrate collecting process:

in the process of centralizing and piling insertion, the film cavity 7 continuously and intermittently expands and contracts to suck sediment on the seabed, after sedimentation, clear water is sprayed out to collect sediment on the seabed, after the sediment is settled, the sediment is stored in the film cavity 7 above, and after the task is completed, the sediment floats upwards along with the submersible vehicle;

G. Automatic anti-disturbance function:

in the long-term residency of the seabed, the ocean current disturbance can cause the depth of the seabed to be inserted into the seabed to be reduced, the device can automatically resist disturbance and restore to a vertical state and the original set insertion depth, and the specific process is as follows:

once the bottom support rod 1 is pulled up, the supporting force of the seabed on the circular ring disappears, the second guide ring 4102 naturally sags under the action of gravity, the first magnet 4401 sags along with the second guide ring 4102, the distance between the first magnet 4401 and the second magnet 4402 increases, the magnetic repulsive force of the second magnet 4402 decreases, the second spring 4302 pushes the second magnet 4402 to press the control box shell 45 with the conducting sheet 46, at this time, the circuit is communicated, the dielectric film 2 is acted by driving voltage, and the righting and piling operation is started until the bottom support rod 1 is inserted into a set depth, and the system is closed to be standby;

H. auxiliary bottom-off pulling-out process:

when the bottom supporting rod 1 is pulled out from the bottom, negative pressure is formed below the bottom supporting rod 1 to increase the bottom-off adsorption force, so that the bottom-off difficulty is caused, the bottom supporting rod 1 is provided with an inner runner, the upper part is communicated into the film cavity 7, and when the bottom-off is carried out, water in the film cavity 7 can be sucked into the lower part of the bottom supporting rod 1 through the runner 101 to carry out filling compensation, so that the adsorption force is greatly reduced, and the bottom-off is facilitated.

The invention relates to a deep sea bottom support rod automatic righting device, which has the following specific structure and functions:

mainly comprises a sitting bottom support rod 1, a dielectric film 2, a circular ring support rod component 3, a bottoming switch 4, a first rubber fastening ring 5, an electric lead system and the like.

Wherein the bottom supporting rod 1:

the main body of the bottom supporting rod 1 is a cylinder, a semi-ellipsoidal convex body is arranged below the main body, a flow channel 101 is arranged inside the main body, an upper water flowing hole 102 is arranged at the middle upper part of the main body, and a lower water flowing hole 103 is arranged at the bottom of the main body. The water-soluble solid plug 104 is used to plug the drain hole 103 before draining. The water-soluble solid plug 104 is insoluble in light oil in the flow channel of the support rod, can be quickly dissolved in water, and does not generate gas.

Dielectric film 2:

the dielectric film 2 is in a ring shape after being unfolded and is sleeved on the seat bottom supporting rod 1, and the vertical position is restrained and sealed through the first rubber fastening ring 5 and the second rubber fastening ring 33. Thus, a sealed film cavity 7 is formed between the two, and the upper water flowing hole 102 is positioned in the film cavity 7 and is close to the upper side. The film cavity 7 and the strut runner 101 are filled with light oil before submerging. During the submergence, the light oil provides positive buoyancy. Light oil is required to be insoluble in water, low viscosity, non-corrosive, and less dense than water, such as gasoline (density 0.74 g/ml).

The dielectric film 2 is composed of five layers of materials, with the dielectric material 23 in the middle, and the first and second protective films 2101 and 2102 in the outermost, and the first and second flexible electrodes 2201 and 2202 in the middle. The second electrical lead 62 and the third electrical lead 63 penetrate into the flexible electrode through the protective film due to the input of the driving voltage. The dielectric material 23 deforms under the effect of the electric field force, and has a reduced thickness and an expanded area. The first protective film 2101 and the second protective film 2102 have elasticity and negative buoyancy, so that the whole film 2 is underwater negative buoyancy.

Annular bracing piece subassembly 3:

the ring support rod assembly 3 is composed of a ring rod 31, four support rods 32 and a second rubber fastening ring 33. The support rod 32 is welded to the circular ring rod 31 at the upper side and inserted to the second rubber fastening ring 33 at the lower side.

Electrical lead system:

the electrical conductor system is composed of an electrical conductor 61, an electrical conductor 62, an electrical conductor 63, an electrical conductor 64, and an electrical conductor 65 for transmitting electric power.

The first electric lead 61 and the third electric lead 63 are connected to the main power supply of the submersible vehicle, and the polarities of the first electric lead and the third electric lead are opposite. The fourth electrical conductor 64 is connected to the third electrical conductor 63.

The first electric lead 61 and the third electric lead 63 both enter below the membrane 2 through the gap between the membrane 2 and the base strut 1 and access the base switch 4.

The first electrical lead 61 is fed into the control box housing 45 through the watertight connector 48 and is connected to the controller 47.

The watertight connector 48 is embedded on the control box housing 45.

The lower part of the controller 47 is welded to the conductive sheet 46, the voltage of the controller 47 is directly output to the conductive sheet 46, and the controller 47 is connected to a circuit in series, so that the voltage can be controlled.

The fifth electrical conductor 65 is connected to the first electrical conductor 61, and the fifth and fourth electrical conductors 65, 64 are connected to the speed sensor 49 for providing electrical power. The speed sensor 49 collects the speed of the submersible vehicle and transmits it to the controller 47 in the control box housing 45 via the signal line 410 for feedback of the speed signal, the signal line 410 also being sealed via the watertight connector 48.

The watertight connector 48 is of non-metallic material and is capable of transmitting radio signals.

Bottoming switch 4:

the first guide ring 4101 is fixed to the seat bottom support rod 1 by a fastening nut 42, the first spring 4301 and the control box housing 45 are welded to the first guide ring 4101, and the second guide ring 4102 is sleeved on the seat bottom support rod 1 and can slide up and down freely, but the upper part is welded to the first spring 4301, so that the seat bottom support rod is restrained and is in a hanging state. The right of the second guide ring 4102 is stuck with a first magnet 4401, the control box shell 45 is filled with insulating gas or liquid, the second magnet 4402 is stuck on the lower conductive sheet 46 through glue, and the conductive sheet 46 and the control box shell 45 are made of metal materials which can be electrically conductive and have no magnetism. The faces of the first magnet 4401 and the second magnet 4402, which are close to each other, are opposite in polarity and have repulsive pushing force. The second electrical lead 62 is attached to the control box housing 45, and the second spring 4302 is welded to the control box housing 45 above and bonded to the second magnet 4402 below.

The controller 47 is a multi-function module connected in series to the circuit for adjusting the driving voltage of the thin film. The controller 47 is connected in series with the bottoming switch 4 in the circuit, and both are required to turn on the dielectric film 2 simultaneously to receive the driving voltage. The controller 47 has a radio communication function, and the watertight connector 48 can serve as a radio channel. The modification of the controller 47 parameters may be performed by radio signals prior to the submergence. The controller 47 has a constant speed submergence control program and a sitting-bottom centralizing pile driving control program stored therein, and is triggered to be automatically activated according to the speed of the submersible vehicle.

The speed sensor 49 is connected to the upper submersible main power supply via electrical lead 64 and electrical lead 65 and is always energized, and thus is constantly measuring speed and transmits a speed signal to the controller 47 via signal line 410.

In the actual use process:

(one) preparation work before submerging:

first, the depth of insertion of the seat bottom pole 1 is set: the fastening nut 42 is adjusted to adjust the height of the control box housing 45 on the seafloor pole 1 and to set the target depth of insertion of the seafloor pole 2 into the seafloor.

Then, control parameter settings: the parameters in the automatic control program in the controller 47 are set by communicating with the controller 47 through special remote control equipment, and the parameters are mainly three as follows:

1. Maximum submergence speed Vm in the free submergence process;

2. the waiting time Tw for turning on the driving voltage again after sitting on the bottom is usually set to 10 minutes;

3. in the process of inserting the righting or piling auxiliary supporting rod, the stabilizing duration Ts of the single-start driving voltage is also Ts, and the interval is usually set to be 5 minutes.

Secondly, filling oil into the equipment:

before the water is drained, the device is inverted, and light oil is poured into the device through the drain hole 103 until the film cavity 7 and the support rod runner 101 are full.

The water-soluble solid plug 104 is plugged into the water outlet 103 to plug the outlet, so that the light oil leakage before water is prevented.

And (II) a constant speed function in the submerging process:

A. initial free submergence:

after the submersible is thrown off from the mother ship, the submersible is unpowered under the action of negative buoyancy.

The bottoming switch 4 is in an on state in the submergence process.

After the water is discharged, the water-soluble solid plug 104 can be dissolved rapidly, the lower water flowing hole 103 is opened, and the light oil is communicated with the sea water, so that the pressure is balanced. During the submergence, the struts are substantially in a vertical position. The density of the light oil is smaller than that of the water, and the light oil is always positioned in the flow passage and the film cavity 7 under the action of positive buoyancy. Thus, during the submergence, the light oil continues to provide positive buoyancy to the submersible. The light oil is positioned above the submersible, so that the floating center of the submersible is improved, the stability is improved, and the support rod is maintained to be vertically inserted into the seabed.

As the submergence speed increases, the hydrodynamic force increases gradually, pushing the membrane up, assuming an inverted conical shape, and covering the upper annular support bar assembly 3, as shown in fig. 5. The support rods 32 support the film 2 from deformation. The inverted cone membrane is positioned above the submersible and plays a role of stabilizing the wing. Not only can the rolling and pitching damping be increased to inhibit the submersible vehicle from shaking, but also the dynamic stability of the submersible vehicle can be increased to promote the vertical submergence of the supporting rod.

B. Constant speed submergence function:

at the initial stage of submergence, the submergence speed gradually increases until it is greater than the set maximum submergence speed Vm. When this condition is sensed by the controller 47 via the speed sensor 49, the drive voltage to the membrane is increased, stretching of the membrane 2 is promoted, the frontal area is increased, the resistance is increased, the speed is reduced until the submergence speed is reduced to Vm, and the speed submergence is maintained.

C. And (3) automatically righting the supporting rod:

after the submersible has been set, the base struts 1 are inserted into the seabed, typically with a certain inclination. At this point, the speed sensor 49 measures a speed dip of zero, thereby triggering the controller 47 to initiate the auto-righting routine.

After the righting routine is initiated, the controller 47 turns off the drive power to the membrane and turns on after Tw minutes. During this period, the film 2 is soft when the power is off, naturally sags under the action of the negative buoyancy of the film 2, and becomes a right cone shape. Thereafter, the controller 47 intermittently turns on the drive voltage a plurality of times to cause the struts to straighten, the duration of the single turn on drive voltage being Ts. The righting process mainly consists of 2 processes:

a) Sand sucking and drag reducing process:

when the driving voltage is started, the film 2 is stretched in equal proportion, so that the film cavity 7 is expanded, negative pressure is formed in the cavity, and sediment water on the sea floor is sucked. In the time Ts of stable driving voltage, sediment is deposited at the bottom of the cavity, and the upper layer is light oil or clear sea water. After the drive voltage is turned off, the film can shrink and recover, and the liquid in the extrusion cavity flows into the seabed at the bottom of the sitting-bottom support rod. Because the upper water flowing hole 102 is located above the cavity, the upper layer of light oil or water is extruded under the supporting rod preferentially during extrusion. Through multiple extrusion, the sediment amount at the bottom of the support rod is gradually reduced, the water content or the oil content of sediment at the bottom is also gradually increased, and finally the resistance of the righting support rod is reduced.

b) Shaking and righting the supporting rod:

when the driving voltage is turned on, the film 2 is elongated in equal proportion. The membrane 2 is conical and axisymmetric about the sitting strut 1, and after elongation will result in the lower part of the inclined side first contacting the sea floor. After the film 2 is stretched, the seabed is pushed to generate a reaction force to push the supporting rod to be righted, so that single pushing is formed, and the film is shown in fig. 6. If the supporting rod cannot be righted once, the film 2 can automatically protrude outwards, stress is released, and damage to the film is avoided.

Through absorbing sand and shaking the support rod for many times, the thrust required by righting is greatly reduced, and the support rod is promoted to righting.

Finally, the gradient of the support rod is gradually reduced until the film on the other side also becomes a functional sitting bottom, and the support rod is vertical to the seabed, so that the support rod is righted.

D. Automatically adjusting the depth of insertion into the sea floor:

after righting, if the pole is not inserted to the seabed to a sufficient depth, the bottoming switch 4 does not bottom, and the circuit is still in an open state. The controller 47 will continuously control the contraction and elongation of the membrane 2 to facilitate continued insertion of the struts into the seafloor. The method comprises the following 2 steps:

a) Sand sucking process:

after the film 2 is electrified, the film stretches outwards, the pressure in the film cavity 7 is reduced, and sediment water at the bottom of the support rod is sucked into the film cavity 7 through the flow channel 101. The controller 47 maintains the voltage for a period of time, waiting for sediment in the film chamber 7 to settle, above which is relatively clear water or light oil. The controller 47 changes the voltage, the membrane 2 contracts, compressing the membrane cavity 7, squeezing the upper layer of oil or water into the bottom of the sitting bottom pole 1. Through the operations for a plurality of times, sediment at the bottom of the sitting bottom supporting rod 1 is gradually reduced, the support of the sitting bottom supporting rod 1 is gradually weakened, and the sitting bottom supporting rod 1 is gradually submerged under the action of the negative buoyancy of the submersible vehicle.

b) Piling:

the film 2 continues to stretch under the control of the driving voltage, and the lower conical film also stretches synchronously. After elongation, the conical film 2 pushes the seabed, forming an upward counter-thrust to the seat post 1. After the conical film is relaxed, the supporting force to the sitting-bottom supporting rod 1 disappears, and the sitting-bottom supporting rod 1 sinks under the action of negative buoyancy. Thus, a piling process of lifting and sinking the supporting rod is formed, and the seabed substrate is effectively loosened through the piling for a plurality of times, so that the piling and inserting of the sitting-bottom supporting rod 1 is facilitated.

Through repeated sand sucking and piling, the insertion depth of the seat bottom supporting rod 1 can be gradually increased, and the difficulty of one-time pressing of the seat bottom supporting rod 1 for insertion is avoided.

E. Automatically triggering a standby process:

as the depth of insertion of the bottom seat post 1 increases, the bottom guide ring No. 4102 starts bottoming. The second guide ring 4102 gradually moves upward on the seat bottom support rod 1, the distance between the first magnet 4401 and the second magnet 4402 decreases, and the magnetic repulsive force pushes the second magnet 4402 to move upward. The second magnet 4402 drives the conductive sheet 46 to leave the control box shell 45 for suspension, the circuit is disconnected, and the system is powered off for standby. At this time, the set depth of the inserted sea floor is reached.

F. And (3) a submarine substrate collecting process:

In the process of centralizing and piling insertion, the film cavity 7 can continuously and intermittently expand and contract to suck sediment on the seabed, and after sedimentation, clear water is sprayed out to collect sediment on the seabed. After the sitting is finished, sediment is stored in the film cavity 7 above, and floats up along with the submersible after the task is finished.

G. Automatic anti-disturbance function:

in long-term residency of the seabed, the ocean current disturbance can cause the depth of the seabed inserting support rod 1 to be reduced, and the device can automatically resist disturbance and restore to the vertical state and the original set inserting depth. The specific process is as follows:

once the bottom support bar 1 is pulled up, the supporting force of the seabed on the ring disappears, the second guide ring 4102 naturally sags under the action of gravity, the first magnet 4401 sags along with the second guide ring 4102, the distance between the first magnet 4401 and the second magnet 4402 increases, and the magnetic repulsive force to the second magnet 4402 decreases. The spring 4302 pushes the magnet 4402 with the conductive plate 46 against the control box housing 45, at which point the circuit is completed. The dielectric film 2 is subjected to a driving voltage, and the operation of centralizing and piling is started until the system is closed and standby is started after the base support rod 1 is inserted to a set depth.

H. Auxiliary bottom-off pulling-out process:

When the bottom supporting rod 1 is pulled out from the bottom, negative pressure is formed below the supporting rod 1 to increase the adsorption force from the bottom, so that the difficulty in the bottom separation is caused. The device support rod 1 is provided with an inner runner, and the upper part of the device support rod is communicated into the film cavity 7. When the bottom is separated, water in the film cavity 7 can be sucked into the lower part of the supporting rod 1 through the flow channel 101 to carry out filling compensation, so that the adsorption force is greatly reduced, and the bottom is conveniently separated.

The above description is intended to illustrate the invention and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the invention.

Claims (9)

1. The utility model provides a deep sea sits bottom branch automatic righting device, includes sea bottom surface (0), its characterized in that: a bottom supporting rod (1) is inserted into the seabed surface (0), a dielectric film (2) is sleeved outside the bottom supporting rod (1), the upper part and the lower part of the dielectric film (2) are respectively restrained and sealed in vertical positions through a first rubber fastening ring (5) and a second rubber fastening ring (33), and a film cavity (7) is formed inside the dielectric film (2) between the first rubber fastening ring (5) and the second rubber fastening ring (33); the novel rubber fastening device is characterized by further comprising a circular ring support rod assembly (3), wherein a circular ring rod (31) is arranged above the circular ring support rod assembly (3), four support rods (32) are uniformly inserted at intervals in the circumferential direction of the circular ring rod (31), the upper parts of the support rods (32) are welded with the circular ring rod (31), and the lower parts of the support rods (32) are inserted into a second rubber fastening ring (33); the bottom of the sitting bottom supporting rod (1) is provided with a bottoming switch (4), and the upper part of the bottoming switch (4) is connected with a submersible body (8) through an electric wire.

2. The deep sea bottom prop automatic righting device of claim 1, wherein: the main body of the seat bottom supporting rod (1) is of a cylindrical structure, a flow channel (101) is arranged in the vertical direction of the interior of the seat bottom supporting rod (1), an upper water flowing hole (102) communicated with the side wall of the seat bottom supporting rod (1) is arranged above the flow channel (101), a lower water flowing hole (103) is arranged at the bottom of the seat bottom supporting rod (1), and a water-soluble solid plug (104) is arranged at the position of the lower water flowing hole (103).

3. A deep sea bottom prop self-righting device as defined in claim 2, wherein: the upper water flowing hole (102) is positioned in the film cavity (7) and is close to the upper side.

4. A deep sea bottom prop self-righting device as defined in claim 2, wherein: before submerging, the thin film cavity (7) and the supporting rod runner (101) are filled with light oil.

5. The deep sea bottom prop automatic righting device of claim 1, wherein: the dielectric film (2) is in a circular ring structure after being unfolded.

6. The deep sea bottom prop automatic righting device of claim 1, wherein: the dielectric body film (2) is composed of five layers of materials, a dielectric body material (23) is arranged in the middle of the dielectric body film, a first flexible electrode (2201) and a second flexible electrode (2202) are respectively arranged at the upper end and the lower end of the dielectric body material (23), the outer layer of the first flexible electrode (2201) is a first protective film (2101), and the outer layer of the second flexible electrode (2202) is a second protective film (2102).

7. The deep sea bottom prop automatic righting device of claim 1, wherein: the outer diameter of the circular ring rod (31) is larger than that of the second rubber fastening ring (33).

8. The deep sea bottom prop automatic righting device of claim 1, wherein: the structure of the bottoming switch (4) is as follows: including fixed in the upper and lower interval No. one guide ring (4101) and No. two guide rings (4102) on sitting end branch (1), the welding has No. one spring (4301) between No. one guide ring (4101) and No. two guide rings (4102), and No. two magnet (4401) are pasted to the right-hand member of No. two guide rings (4102), the tip welding of No. one guide ring (4101) has control box casing (45), it has insulating gas or liquid to fill in control box casing (45), is provided with conducting strip (46) in control box casing (45), and No. two magnet (4402) paste on conducting strip (46) under through glue, and No. one magnet (4401) and No. two magnet (4402) are opposite, are provided with No. two spring (4302) between No. two magnet (4402) and the interior top surface of control box casing (45), install speed sensor (49) in the outside of control box casing (45), install controller (47) in control box casing (45), install watertight (48) on control box casing (45).

9. The deep sea bottom prop automatic righting device of claim 8, wherein: the second guide ring (4102) slides up and down along the bottom supporting rod (1), and the conducting sheet (46) and the box body shell (45) are made of conducting metal materials without magnetism.

Images