CN115505415B - Multidirectional closed detection unit for catalytic cracking pilot plant - Google Patents
Multidirectional closed detection unit for catalytic cracking pilot plant Download PDFInfo
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- CN115505415B CN115505415B CN202211022225.8A CN202211022225A CN115505415B CN 115505415 B CN115505415 B CN 115505415B CN 202211022225 A CN202211022225 A CN 202211022225A CN 115505415 B CN115505415 B CN 115505415B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
- C10G9/18—Apparatus
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- Oil, Petroleum & Natural Gas (AREA)
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- Thermal Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to the technical field of catalytic cracking equipment, in particular to a multidirectional closed detection unit for a catalytic cracking pilot plant, which comprises a catalytic cracking furnace body, wherein an external detection port for observing the internal condition of the catalytic cracking furnace is formed in the outer side wall of the catalytic cracking furnace body. According to the multidirectional closed detection unit for the catalytic cracking pilot plant, disclosed by the invention, the outer detection port is formed in the outer side wall of the catalytic cracking furnace body, the outer closed sealing cover with the elastic shock-resistant module arranged inside is arranged at the opening position at the outer side of the outer detection port, so that the impact of the pressure in the furnace on the detection port closing mechanism can be effectively reduced, and the safety is greatly improved; be provided with the side direction on the outside detects mouthful medial surface and overturn the closure board, can promote the observation scope of outside detection mouthful greatly through the inside high temperature resistant reflex reflector of side direction upset closure board, it is more convenient to use.
Description
Technical Field
The invention relates to the technical field of catalytic cracking equipment, in particular to a multidirectional closed detection unit for a catalytic cracking pilot plant.
Background
The cracking furnace is mainly used for processing cracking gas, and comprises a double radiation chamber, a single radiation chamber and a millisecond furnace. The cracking furnace is a core device of an ethylene production device and is mainly used for processing various raw materials such as natural gas, refinery gas, crude oil, naphtha and the like into cracking gas, providing the cracking gas for other ethylene devices and finally processing the cracking gas into ethylene, propylene and various byproducts. The production capacity and the technology of the cracking furnace directly determine the production scale, the yield and the product quality of the whole ethylene device, so that the cracking furnace plays a role of a tap in the ethylene production device and even the whole petrochemical production.
The cracking furnace is divided into a convection section and a radiation section. Generally, the convection section functions to recover flue gas waste heat for preheating and vaporizing the feedstock and superheating the feedstock and dilution steam to the cross-over temperature of the material, with the remaining heat being used to superheat the ultra-high pressure steam and preheat boiler feed water. In the process of preheating and vaporizing the raw materials, dilution steam is injected to reduce the vaporization temperature of the raw materials and prevent the raw materials from coking in the vaporization process. Each group of coils in the convection section of the cracking furnace is mainly formed by welding heat exchange furnace tubes through return bends, end tube plates and middle tube plates support the furnace tubes, and inlets and outlets of some coils are collected together through a header. The periphery of each coil is assembled on the upper furnace wall to form a module.
In order to cooperate to observe the internal state of the cracking furnace, an inspection port needs to be formed in the cracking furnace, the inspection port applied to the cracking furnace in the market at present is simple in structure, the durability and the safety are very limited, the internal pressure cannot be freely increased or decreased according to the internal pressure, meanwhile, the internal state is of a fixed structure, and the observation angle and the observation range are very limited.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems in the prior art, an improved multidirectional closed detection unit for a catalytic cracking pilot-scale device is provided, and the problems that an inspection port applied to a cracking furnace in the market at present is simple in structure, extremely limited in durability and safety, incapable of freely increasing and decreasing according to the size of internal pressure, simultaneously mostly in a fixed structure, and extremely limited in observation angle and range are solved.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a multidirectional closed detecting element for catalytic cracking pilot plant, includes the catalytic cracking furnace body, this lateral wall of catalytic cracking furnace on set up the outside detection mouth that is used for observing the inside condition of catalytic cracking furnace, outside detection mouth medial surface on set up the side direction of inside setting up the side direction upset closure plate and accomodate the groove, outside detection mouth outside open position be provided with the outside closed sealed lid that inside set up the elastic shock resistance module, this lateral wall of catalytic cracking furnace on the activity be equipped with and be used for connecting the outside closed sealed side direction connection hinge that covers, the inside internal regulation mouth of having seted up of side direction upset closure plate, the inside activity of internal regulation mouth be equipped with high temperature resistant reflex reflector.
The side direction upset closure board be close to outside detection mouth inner wall end bilateral symmetry and seted up n font structure upset and accomodate the groove, the upset accomodate groove both ends inner wall on the symmetry and seted up the side direction assembly blind hole, the upset accomodate the inside side direction assembly blind hole swing joint that has of groove and overturn spacing frame, outside detection mouth inner wall on set up the inside side direction spacing recess that sets up fixed spacing buckle, the inside fixed side direction upset closure board of fixed spacing buckle is gone into to the spacing frame of upset through the top card.
The lateral fixing seat for installing the lateral connecting hinge is fixed on one side of the outer side wall of the catalytic cracking furnace body, which is positioned on the outer side of the outer detection opening, and the outer movable assembly seat for assembling the lateral connecting hinge is fixed on the outer side wall of the outer closed sealing cover through bolts.
The elastic impact-resistant module comprises an inner assembly guide cylinder fixed in the middle of the inner side wall of the outer closed sealing cover in a welding manner, an inner telescopic assembly cylinder movably inserted into the inner assembly guide cylinder, a reset spring arranged in the inner assembly guide cylinder, an outer assembly seat fixed on the outer side of the inner telescopic assembly cylinder, a movable refractory brick extrusion housing sleeved and fixed on the outer side of the outer assembly seat and a fixed refractory brick sealing housing fixed on the inner wall of the outer closed sealing cover.
The high-temperature-resistant reflecting device comprises a fixed assembly frame fixed in the internal adjusting port, an internal turnover plate inserted in the fixed assembly frame through a lateral rotating shaft and a reflecting coating coated on the outer side surface of the internal turnover plate.
The side wall of the lateral overturning closing plate is covered with lateral refractory bricks, and the positions of the lateral refractory bricks corresponding to the internal adjusting openings are provided with light guide through holes.
The inner side surface of the external closed sealing cover is fixedly connected with a lateral hydraulic limiting device fixedly communicated with the inside of the internal assembly guide cylinder at the assembly end of the sealing cover shell for fixing refractory bricks.
The lateral hydraulic limiting device comprises an inner side piston cylinder, an inner regulating piston, an outer limiting rod and hydraulic oil, wherein the inner side piston cylinder is welded and fixed on the inner side wall of the outer closed sealing cover, the inner regulating piston is movably assembled in the inner side piston cylinder, the outer limiting rod is fixed on the outer side wall of the inner regulating piston, and the hydraulic oil is filled in the connecting end of the inner assembling guide cylinder and the inner side piston cylinder.
The outer side surface of the outer closed sealing cover is provided with an arc-shaped outer control opening, and the arc-shaped outer control opening is movably provided with an outer elastic locking mechanism.
The external elastic locking mechanism comprises an external closing plate movably assembled at the outer opening position of the arc-shaped external control opening, an internal closing plate movably assembled at the inner opening position of the arc-shaped external control opening, an internal connecting block for fixing the external closing plate and the internal closing plate, an internal guide cylinder fixed on the inner outer wall of the external closing sealing cover, an internal limiting block inserted into the internal guide cylinder and a movable connecting rod movably connected with the internal closing plate and the internal limiting block.
The beneficial effects of the invention are as follows:
(1) According to the multidirectional closed detection unit for the catalytic cracking pilot plant, disclosed by the invention, the outer detection port is formed in the outer side wall of the catalytic cracking furnace body, the outer closed sealing cover with the elastic shock-resistant module arranged inside is arranged at the opening position at the outer side of the outer detection port, so that the impact of the pressure in the furnace on the detection port closing mechanism can be effectively reduced, and the safety is greatly improved;
(2) The lateral overturning closing plate is arranged on the inner side surface of the external detection port, and the observation range of the external detection port can be greatly improved through the high-temperature-resistant reflecting device in the lateral overturning closing plate, so that the use is more convenient;
(3) The turning limiting frame outside the lateral turning closing plate is clamped into the fixing limiting buckle, so that the rotation angle of the lateral turning closing plate can be fixed and limited, and the structural firmness and stability in the observation process are improved;
(4) The elastic impact-resistant module can be used for controlling the lateral hydraulic limiting device to adjust in a linkage manner when internal impact force is received, the external telescopic section of the lateral hydraulic limiting device is inserted into the internal adjusting port to improve the closing firmness of the lateral overturning closing plate, and the operation resistance can be reduced in the normal locking process, so that the control is more labor-saving.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an internal cross-sectional view of the present invention.
Fig. 3 is a partial cross-sectional view of the high temperature resistant reflector in the unfolded state of the present invention.
FIG. 4 is a cross-sectional view of the inside of the external closure seal cap of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The utility model provides a multidirectional closed detection unit for catalytic cracking pilot plant that fig. 1, fig. 2 and fig. 3 show, including catalytic cracking furnace body 1, offer the outside detection mouth 2 that is used for observing the inside condition of catalytic cracking furnace on the catalytic cracking furnace body 1 lateral wall, offer the side direction of inside setting up side direction upset closure plate 3 on the outside detection mouth 2 medial surface and accomodate groove 4, outside detection mouth 2 outside open position is provided with the outside closed sealed lid 5 of inside setting up elasticity module that shocks resistance, activity is equipped with the side direction connection hinge 6 that is used for connecting outside closed lid 5 on the catalytic cracking furnace body 1 lateral wall, inside regulation mouth 7 has been offered to side direction upset closure plate 3 inside, inside movable assembly of inside regulation mouth 7 is equipped with high temperature resistant reflector device.
Further, in order to cooperate the inside assembly spacing, the groove 8 is accomodate in the upset of n font structure has been seted up to the side direction upset closure plate 3 near outside detection mouth 2 inner wall end bilateral symmetry, the side direction assembly blind hole has been seted up to the symmetry on the inner wall of groove 8 both ends is accomodate in the upset, the inside side direction spacing frame 9 that has overturn through side direction assembly blind hole swing joint in groove 8, set up the inside side direction spacing recess 11 that sets up fixed spacing buckle 10 on the outside detection mouth 2 inner wall, the inside fixed side direction upset closure plate 3 of fixed spacing buckle 10 is gone into to upset spacing frame 9 through the top card.
The outside upset closure plate 3 upset is inside the groove 4 is accomodate to the side direction under the normal condition, then to the stove upset during the use, then with upset spacing frame 9 upset out the upset and accomodate groove 8, then insert fixed spacing buckle 10 inside with upset spacing frame 9 top to the upset angle of side direction upset closure plate 3 is spacing, avoids side direction upset closure plate 3 to produce when observing and rocks and overturn certainly, thereby influences normal use.
Further, in order to cooperate with the external movable assembly, a lateral fixing seat 12 for installing the lateral connecting hinge 6 is fixed on one side of the external detection port 2 on the outer side wall of the catalytic cracking furnace body 1 by bolts, and an external movable assembly seat 13 for assembling the lateral connecting hinge 6 is fixed on the outer side wall of the external closed sealing cover 5 by bolts.
As shown in fig. 2 and 4, in order to improve the internal shock resistance, the elastic shock resistance module comprises an internal assembly guide cylinder 14 welded and fixed at the middle part of the inner side wall of the external closure sealing cover 5, an internal telescopic assembly cylinder 15 movably inserted into the internal assembly guide cylinder 14, a return spring 16 installed inside the internal assembly guide cylinder 14, an external assembly seat 17 fixed at the outer side of the internal telescopic assembly cylinder 15, a movable refractory brick extrusion housing 18 sleeved and fixed at the outer side of the external assembly seat 17, and a fixed refractory brick sealing housing 19 fixed at the inner wall of the external closure sealing cover 5.
The internal impact force is impacted on the movable refractory brick extrusion housing 18, the movable refractory brick extrusion housing 18 drives the inner telescopic assembly cylinder 15 to retract into the inner assembly guide cylinder 14 to finish the force release, and then the movable refractory brick extrusion housing 18 and the fixed refractory brick sealing housing 19 respectively seal the inner opening and the outer opening of the outer detection port 2 in a normal state.
Further, in order to change the reflection of the internal light in cooperation with the angle adjustment, the high temperature resistant light reflecting device includes a fixed fitting frame 20 fixed in the internal adjustment port 7, an internal turnover plate 21 inserted inside the fixed fitting frame 20 through a lateral rotation shaft, and a reflective coating 22 coated on an outer side surface of the internal turnover plate 21.
The angle of the inner turnover plate 21 is adjusted by people, and then the lateral turnover closing plate 3 is turned inwards, so that the inner light is refracted through the reflective coating 22, and people can watch the condition around the inner opening of the outer detection port 2 at the outer detection port 2, so that the range of observation dead angles is reduced.
Further, in order to promote fire-resistant thermal insulation effect, cover the side wall of side direction upset closure board 3 and be equipped with the side direction and fire-resistant brick 23, the side direction is able to bear or endure the light through-hole 24 to the inside regulation mouth 7 position of firebrick 23.
Further, in order to match with lateral extrusion limiting, the inner side surface of the external closed sealing cover 5 is fixedly connected with a lateral hydraulic limiting device fixedly communicated with the inside of the internal assembly guide cylinder 14 at the assembly end of the fixed refractory brick sealing cover shell 19.
Further, for cooperation of extrusion linkage, the lateral hydraulic limiting device comprises an inner side piston cylinder 25 welded and fixed on the inner side wall of the outer closed sealing cover 5, an inner adjusting piston 26 movably assembled inside the inner side piston cylinder 25, an outer limiting rod 27 fixed on the outer side wall of the inner adjusting piston 26, and hydraulic oil filled inside the connecting end of the inner assembling guide cylinder 14 and the inner side piston cylinder 25.
When the internal pressure becomes large, the internal pressure extrudes to the surface of the movable refractory brick extrusion housing 18, the movable refractory brick extrusion housing 18 extrudes outwards to drive the external assembly seat 17 and the internal telescopic assembly cylinder 15 to extrude outwards, the internal telescopic assembly cylinder 15 extrudes the reset spring 16 inside the internal assembly guide cylinder 14, and then hydraulic oil is controlled to extrude outwards to complete the linkage control effect, and the top end of the internal telescopic assembly cylinder 15 positioned on the internal assembly guide cylinder 14 is provided with a sealing piston to play the linkage control effect.
Further, in order to open the arc-shaped external control opening 28 on the outer side surface of the external closing seal cover 5, an external elastic locking mechanism is movably assembled on the arc-shaped external control opening 28.
Further, in order to cooperate with the external control of the opening and closing, the external elastic locking mechanism comprises an external closing plate 29 movably assembled at the opening position outside the arc-shaped external control port 28, an internal closing plate 30 movably assembled at the opening position inside the arc-shaped external control port 28, an internal connecting block 31 for fixing the external closing plate 29 and the internal closing plate 30, an internal guide cylinder 32 fixed on the internal outer wall of the external closing seal cover 5, an internal limit block 33 inserted inside the internal guide cylinder 32, and a movable connecting rod 34 movably connecting the internal closing plate 30 and the internal limit block 33.
The handle for control is arranged on the outer side of the outer closing plate 29, then the handle is rotated to control the outer closing plate 29 to rotate, the outer closing plate 29 synchronously drives the inner closing plate 30 to rotate through the inner connecting block 31 in the arc-shaped outer control port 28, the inner closing plate 30 drives the inner limiting block 30 to stretch out and draw back in the inner guide cylinder 32 through the movable connecting rod 34, the outer side end of the inner limiting block 30 is reinforced and limited by being inserted into the inner adjusting port 7, the outer elastic locking mechanism and the inner piston cylinder 25 are arranged in a staggered mode, and the included angle between the outer elastic locking mechanism and the inner piston cylinder 25 is 90 degrees.
According to the multidirectional closing detection unit for the catalytic cracking pilot plant, the outer detection port 2 is formed in the outer side wall of the catalytic cracking furnace body 1, the outer closing sealing cover 5 with the elastic impact-resistant module arranged inside is arranged at the opening position of the outer side of the outer detection port 2, so that impact of the furnace pressure on a detection port closing mechanism can be effectively reduced, and the safety is greatly improved; the lateral overturning closing plate 3 is arranged on the inner side surface of the external detection port 2, and the observation range of the external detection port 2 can be greatly improved through the high-temperature-resistant reflecting device in the lateral overturning closing plate 3, so that the use is more convenient; the turning limiting frame 9 outside the lateral turning closing plate 3 is clamped into the fixing limiting buckle 10, so that the rotation angle of the lateral turning closing plate 3 can be fixed and limited, and the structural firmness and stability in the observation process are improved; the elastic impact-resistant module can be used for controlling the lateral hydraulic limiting device to adjust in a linkage manner when internal impact force is received, the external telescopic section of the lateral hydraulic limiting device is inserted into the internal adjusting port 7 to improve the closing firmness of the lateral overturning closing plate 3, and the operation resistance can be reduced in the normal locking process, so that the control is more labor-saving.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The utility model provides a multidirectional closed detecting element for catalytic cracking pilot plant, includes catalytic cracking stove body (1), characterized by: the catalytic cracking furnace body (1) lateral wall on set up and be used for observing the outside detection mouth (2) of the inside condition of catalytic cracking furnace, outside detection mouth (2) medial surface on set up the side direction of inside setting up side direction upset closure board (3) and accomodate groove (4), outside detection mouth (2) outside open position be provided with inside outside closed sealed lid (5) that set up the elastic shock resistance module, catalytic cracking furnace body (1) lateral wall on the activity be equipped with and be used for connecting outside closed sealed lid (5) lateral connection hinge (6), inside regulation mouth (7) of having seted up of side direction upset closure board (3), inside activity of inside regulation mouth (7) be equipped with high temperature resistant reflector.
2. The multi-directional closure detection unit for a catalytic cracking pilot plant according to claim 1, wherein the multi-directional closure detection unit comprises: the utility model provides a side direction upset closed board (3) be close to outside detection mouth (2) inner wall end bilateral symmetry and offered n font structure upset and accomodate groove (8), the upset accomodate groove (8) both ends inner wall on the symmetry offered the side direction assembly blind hole, the upset accomodate groove (8) inside have upset spacing frame (9) through side direction assembly blind hole swing joint, outside detection mouth (2) inner wall on offered the inside side direction spacing recess (11) that sets up fixed spacing buckle (10), upset spacing frame (9) go into fixed spacing buckle (10) inside fixed side direction upset closed board (3) through the top card.
3. The multi-directional closure detection unit for a catalytic cracking pilot plant according to claim 1, wherein the multi-directional closure detection unit comprises: the catalytic cracking furnace is characterized in that a lateral fixing seat (12) for installing a lateral connecting hinge (6) is fixedly arranged on one side of the outer side wall of the catalytic cracking furnace body (1) located at the outer detection opening (2) through bolts, and an outer movable assembly seat (13) for assembling the lateral connecting hinge (6) is fixedly arranged on the outer side wall of the outer closed sealing cover (5) through bolts.
4. The multi-directional closure detection unit for a catalytic cracking pilot plant according to claim 1, wherein the multi-directional closure detection unit comprises: the elastic impact-resistant module comprises an inner assembly guide cylinder (14) fixed in the middle of the inner side wall of the outer closed sealing cover (5) in a welding mode, an inner telescopic assembly cylinder (15) movably inserted into the inner assembly guide cylinder (14), a reset spring (16) arranged in the inner assembly guide cylinder (14), an outer assembly seat (17) fixed on the outer side of the inner telescopic assembly cylinder (15), a movable fireproof brick extrusion housing (18) sleeved and fixed on the outer side of the outer assembly seat (17) and a fixed fireproof brick sealing housing (19) fixed on the inner wall of the outer closed sealing cover (5).
5. The multi-directional closure detection unit for a catalytic cracking pilot plant according to claim 1, wherein the multi-directional closure detection unit comprises: the high-temperature-resistant reflecting device comprises a fixed assembly frame (20) fixed in the internal adjusting opening (7), an internal turnover plate (21) inserted into the fixed assembly frame (20) through a lateral rotating shaft, and a reflecting coating (22) coated on the outer side surface of the internal turnover plate (21).
6. The multi-directional closure detection unit for a catalytic cracking pilot plant according to claim 1, wherein the multi-directional closure detection unit comprises: the side wall of the lateral overturning closing plate (3) is covered with lateral refractory bricks (23), and the position of the lateral refractory bricks (23) corresponding to the internal adjusting opening (7) is provided with a light guide through hole (24).
7. The multi-directional closed detection unit for a catalytic cracking pilot plant according to claim 4, wherein the multi-directional closed detection unit comprises: the inner side surface of the external closed sealing cover (5) is positioned at the assembly end of the fixed refractory brick sealing cover shell (19) and fixedly connected with a lateral hydraulic limiting device fixedly communicated with the inside of the internal assembly guide cylinder (14).
8. The multi-directional closure detection unit for a catalytic cracking pilot plant of claim 7, wherein: the lateral hydraulic limiting device comprises an inner side piston cylinder (25) welded and fixed on the inner side wall of the outer closed sealing cover (5), an inner adjusting piston (26) movably assembled in the inner side piston cylinder (25), an outer limiting rod (27) fixed on the outer side wall of the inner adjusting piston (26) and hydraulic oil filled in the connecting end of the inner assembling guide cylinder (14) and the inner side piston cylinder (25).
9. The multi-directional closure detection unit for a catalytic cracking pilot plant of claim 7, wherein: an arc-shaped external control port (28) is formed in the outer side face of the external closed sealing cover (5), and an external elastic locking mechanism is movably assembled on the arc-shaped external control port (28).
10. The multi-directional closure detection unit for a catalytic cracking pilot plant of claim 9, wherein: the external elastic locking mechanism comprises an external closing plate (29) movably assembled at the outer opening position of the arc-shaped external control opening (28), an internal closing plate (30) movably assembled at the inner opening position of the arc-shaped external control opening (28), an internal connecting block (31) used for fixing the external closing plate (29) and the internal closing plate (30), an internal guide cylinder (32) fixed on the inner outer wall of the external closing sealing cover (5), an internal limiting block (33) inserted into the internal guide cylinder (32) and a movable connecting rod (34) movably connecting the internal closing plate (30) and the internal limiting block (33).
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