CN112216538B - Special starting switch device and method for electric submersible pump for layered oil extraction - Google Patents
Special starting switch device and method for electric submersible pump for layered oil extraction Download PDFInfo
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- CN112216538B CN112216538B CN202011096875.8A CN202011096875A CN112216538B CN 112216538 B CN112216538 B CN 112216538B CN 202011096875 A CN202011096875 A CN 202011096875A CN 112216538 B CN112216538 B CN 112216538B
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- 238000000605 extraction Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims 2
- 238000009413 insulation Methods 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
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- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a special starting switch device and method for an electric submersible pump for layered oil extraction. The technical proposal is as follows: a cylindrical insulation cavity is formed between an outer wall insulation protective sleeve of the central tube and an electric appliance protective sleeve, three groups of power cable contact devices and three groups of power-off spring devices are arranged in the cylindrical insulation cavity, the three groups of power cable contact devices and the three groups of power-off spring devices are sequentially arranged at intervals, and a control line contact switch device is arranged in the middle of the outer wall insulation protective sleeve; the three groups of power cable contact devices and the three groups of power-off spring devices are driven to be in contact with each other or to be disconnected with each other by the control line contact switch device so as to realize power off. The beneficial effects are that: the movement of the magnetic armature drives the three groups of movable contact rods to synchronously move, so that the power cable is connected when the power cable is electrified and disconnected when the power cable is disconnected, and then the upper electric submersible pump and the lower electric submersible pump are controlled to work, thereby realizing the control switch of the two electric submersible pumps and realizing the layered oil extraction process.
Description
Technical Field
The invention relates to an auxiliary device and method for an electric submersible pump for layered oil extraction, in particular to a special starting switch device and method for the electric submersible pump for layered oil extraction.
Background
In oil exploitation, the electric submersible pump is widely applied because of high efficiency, stability, energy conservation and reliability, but in layered oil exploitation, the application of the electric submersible pump is limited because of the difficulty in realizing the use of a plurality of electric submersible pumps, and the limitation is mainly represented by the following: (1) limitations of over-cable packers: the existing cable passing packer mostly adopts a cable passing packer produced by United states shell company, the tool adopts an eccentric structure (comprising an oil passing channel, a cable passing channel, an air outlet channel and a control line channel, the oil passing channel is generally required to be larger, the whole device forms an eccentric structure, the space on one side of the cable passing channel, the air outlet channel and the control line channel is limited, a plurality of cable passing channels cannot be added, the space of an underground pipeline is limited, the size of the cable passing packer cannot be enlarged, so that the parallel passing of a plurality of power cables cannot be realized, the cost of the power cables is higher, because the power cables are special, the cost is higher, and the like, (3) a special starting switch device is not used, and the control switch of a plurality of underground electric submersible pumps cannot be realized.
Aiming at the situation, the scheme of the special starting switch device for the electric submersible pump can assist other devices to realize the layered oil extraction process of the electric submersible pump well.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art, and provides a special starting switch device and a special starting switch method for an electric submersible pump for layered oil extraction.
The invention relates to a special starting switch device for an electric submersible pump for layered oil extraction, which has the technical scheme that: the power cable contact device comprises a central tube (b 1), an electric appliance protective sleeve (b 2), an incoming line wiring insulating pad (b 3), an outer wall insulating protective sleeve (b 7), an outgoing line wiring insulating pad (b 8), a power cable contact device, a control line contact switching device and a power-off spring device, wherein the outer wall of the central tube (b 1) is provided with the outer wall insulating protective sleeve (b 7) and the electric appliance protective sleeve (b 2), a cylindrical insulating cavity is formed between the outer wall insulating protective sleeve (b 7) of the central tube (b 1) and the electric appliance protective sleeve (b 2), three groups of power cable contact devices and three groups of power-off spring devices are arranged in the cylindrical insulating cavity at intervals in sequence, and the control line contact switching device is arranged in the middle of the outer wall insulating protective sleeve (b 7); the three groups of power cable contact devices and the three groups of power-off spring devices are driven to be in contact with each other or to be disconnected with each other by the control line contact switch device so as to realize power off.
Preferably, the power cable contact device comprises a fixed binding post (b 9), a movable ring contact (b 10), a movable contact rod (b 11), a magnetic armature insulating pad (b 13) and a movable contact rod wiring cylinder (b 14), wherein the movable contact rod wiring cylinder (b 14) is respectively fixed at two sides of the fixed contact point (b 12), the movable contact rod (b 11) in sliding fit is arranged in the movable contact rod wiring cylinder (b 14), a plurality of movable ring contacts (b 10) are arranged on the outer wall of the movable contact rod (b 11), the root parts of the two movable contact rod wiring cylinders (b 14) are respectively provided with the fixed binding post (b 9), and the movable contact rod wiring cylinders are connected with a power cable through the fixed binding posts (b 9).
Preferably, the control line contact switching device comprises a fixed contact (b 12) and a magnetic generation coil (b 6), wherein the fixed contact (b 12) is positioned in the middle of the outer wall of the central tube (b 1), the magnetic generation coil (b 6) with an insulating layer is wound in the fixed contact (b 12), and the upper starting switch control line (14) is connected to the magnetic generation coil (b 6).
Preferably, the power-off spring device comprises an incoming wire wiring insulation pad (b 3), a magnetic armature (b 4), an insulation isolation pad (b 5) and an outgoing wire wiring insulation pad (b 8), wherein the magnetic armature (b 4), the insulation isolation pad (b 5) and the power-off spring (b 16) are arranged between the incoming wire wiring insulation pad (b 3) and the fixed contact (b 12), and the power-off spring (b 16) is arranged between the magnetic armature (b 4) and the fixed contact (b 12); the magnetic armature (b 4) is positioned between the insulating isolation pad (b 5) and the fixed contact (b 12), and a power-off spring (b 16) is arranged between the magnetic armature (b 4) and the fixed contact (b 12); the magnetic armature (b 4) is movably connected with the three groups of movable contact rods (b 11), and the movement of the magnetic armature (b 4) drives the three groups of movable contact rods (b 11) to move synchronously.
Preferably, the magnetic armature (b 4) has a circular structure and is provided with three groups of movable contact rod mounting holes, the outer end of the movable contact rod (b 11) is provided with a connecting clamping groove, and the movable contact rod (b 11) is inserted into the circular magnetic armature (b 4) and is fixed through the connecting clamping groove.
Preferably, the movable contact rod wiring cylinder (b 14) is of a cylindrical structure, the outer wall of the movable contact rod (b 11) is in contact fit with the inner wall of the movable contact rod wiring cylinder (b 14) through a movable ring contact (b 10), the movable ring contact (b 10) is made of a metal wear-resistant material, and a process hole sealing plug (b 15) is arranged at the bottom of the electric appliance protection sleeve (b 2).
Preferably, the fixed contact (b 12) is in an annular structure, the outer surface of the annular structure is provided with a groove, and the magnetic coil (b 6) is wound in the groove.
The invention relates to a method for using a special starting switch device for an electric submersible pump for layered oil extraction, which adopts the technical scheme that the method comprises the following steps:
one end of the power cable is connected with a fixed binding post (b 9) on the upper side of the fixed contact (b 12), and one end of the power cable is connected with the fixed binding post (b 9) on the lower side of the fixed contact (b 12); a magnetic generating coil (b 6) wound in the fixed contact (b 12) is connected with a control wire; at the position of
When the control line is electrified, a magnetic force is generated by a magnetic generating coil (b 6) of a special starting switch device for the electric submersible pump for layered oil extraction, so that magnetic armatures (b 4) on two sides of a fixed contact (b 12) are attracted to move, the outer walls of three groups of movable contact rods (b 11) are respectively contacted and matched with the inner wall of a movable contact rod wiring cylinder (b 14) through movable ring contacts (b 10), and then the three groups of movable contact rods (b 11) are driven to move and contact the fixed contact (b 12), a power cable is electrified, the electric submersible pump starts to work, and oil is output to the ground;
when the electric submersible pump needs to be turned off, the control line is powered off, the magnetic generating coil (b 6) is powered off to lose magnetic force, and as a plurality of groups of power-off springs (b 16) are arranged between the magnetic armature (b 4) and the fixed contact (b 12), the magnetic armature (b 4) is pushed away by the power-off springs (b 16), and then the three groups of movable contact rods (b 11) are driven to move away from the fixed contact (b 12), so that the power cable is powered off, and the electric submersible pump stops working.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps that a cylindrical insulation cavity is formed between an outer wall insulation protection sleeve of a central tube and an electric appliance protection sleeve, three groups of power cable contact devices and three groups of power-off spring devices are arranged in the cylindrical insulation cavity, the three groups of power cable contact devices and the three groups of power-off spring devices are sequentially arranged at intervals, and a control line contact switch device is arranged in the middle of the outer wall insulation protection sleeve; the three groups of power cable contact devices and the three groups of power-off spring devices are driven to be in contact with each other or to be disconnected with each other by the control line contact switch device so as to realize power off;
a magnetic armature is arranged between the insulating isolation pad and the fixed contact, and a power-off spring is arranged between the magnetic armature and the fixed contact; the magnetic armature is movably connected with the three groups of movable contact rods, the movement of the magnetic armature drives the three groups of movable contact rods to move synchronously, when the power cable is switched on and the power cable is switched off, and then the upper electric submersible pump and the lower electric submersible pump are controlled to work, so that the control switch of the two electric submersible pumps is realized, and the layered oil extraction process is realized.
Drawings
FIG. 1 is a schematic diagram of a dedicated start switch device of the present invention;
FIG. 2 is a schematic cross-sectional view of a dedicated start switch device;
FIG. 3 is a partial schematic view of a portion of a de-energized spring assembly;
FIG. 4 is a schematic view of a partial structure of the power cable contact arrangement;
fig. 5 is a schematic illustration of the structure of a magnetic armature;
FIG. 6 is a schematic view of a construction of a movable contact lever wire barrel;
FIG. 7 is a schematic diagram of an application architecture of the present invention;
FIG. 8 is a circuit schematic of an application of the present invention;
in the upper graph: the central tube b1, the electric appliance protective sleeve b2, the incoming wire wiring insulating pad b3, the magnetic armature b4, the insulating isolation pad b5, the magnet generating coil b6, the outer wall insulating protective sleeve b7, the outgoing wire wiring insulating pad b8, the fixed wiring post b9, the movable ring contact b10, the movable contact rod b11, the fixed contact b12, the magnetic armature insulating pad b13, the movable contact rod wiring cylinder b14, the process hole sealing plug b15, the power-off spring b16, the fixed contact fixing ring b17, the power wire threading hole b18 and the control wire threading hole b19;
the well head flange 10, the sealing steel ring 11, the large four-way valve 12, the lower-layer starting switch control line 13, the upper-layer starting switch control line 14, the three-phase power line 15, the phase compensator 16, the hanger 17, the power control switch 18, the upper-layer control button 19 and the lower-layer control button 20 are arranged on the casing 1, the tail pipe 2, the lower-layer electric submersible pump 3, the lower-layer starting switch 4, the lower-layer cable passing packer 5, the upper-layer electric submersible pump 6, the upper-layer starting switch 7, the upper-layer cable passing packer 8, the production pipe column 9, the well head flange 10.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
1, referring to fig. 1-6, the special starting switch device for the electric submersible pump for layered oil extraction comprises a central tube b1, an electric appliance protecting sleeve b2, an incoming line wiring insulating pad b3, an outer wall insulating protecting sleeve b7, an outgoing line wiring insulating pad b8, a power cable contact device, a control line contact switch device and a power-off spring device, wherein the outer wall of the central tube b1 is provided with the outer wall insulating protecting sleeve b7 and the electric appliance protecting sleeve b2, a cylindrical insulating cavity is formed between the outer wall insulating protecting sleeve b7 of the central tube b1 and the electric appliance protecting sleeve b2, three groups of power cable contact devices and three groups of power-off spring devices are arranged in the cylindrical insulating cavity at intervals in sequence, and the middle part of the outer wall insulating protecting sleeve b7 is provided with the control line contact switch device; the three groups of power cable contact devices and the three groups of power-off spring devices are driven to be in contact with each other or to be disconnected with each other by the control line contact switch device so as to realize power off.
Referring to fig. 4, the power cable contact device of the present invention includes a fixed terminal b9, a movable ring contact b10, a movable contact rod b11, a magnetic armature insulating pad b13, and a movable contact rod wiring cylinder b14, wherein the movable contact rod wiring cylinders b14 are respectively fixed at both sides of the fixed contact b12, the movable contact rod b11 in sliding fit is arranged in the movable contact rod wiring cylinder b14, a plurality of movable ring contacts b10 are arranged on the outer wall of the movable contact rod b11, the root parts of the two movable contact rod wiring cylinders b14 are respectively provided with a fixed terminal b9, and the fixed terminal b9 is connected with a power cable.
Preferably, the control line contact switch device comprises a fixed contact b12 and a magnetic generating coil b6, wherein the fixed contact b12 is positioned in the middle of the outer wall of the central tube b1, the magnetic generating coil b6 with an insulating layer is wound in the fixed contact b12, and the upper starting switch control line 14 is connected with the magnetic generating coil b6.
Referring to fig. 3, the power-off spring device includes an incoming line wiring insulation pad b3, a magnetic armature b4, an insulation isolation pad b5 and an outgoing line wiring insulation pad b8, wherein the magnetic armature b4, the insulation isolation pad b5 and the power-off spring b16 are arranged between the incoming line wiring insulation pad b3 and the fixed contact b12, and the power-off spring b16 is arranged between the magnetic armature b4 and the fixed contact b 12; the magnetic armature b4 is positioned between the insulating isolation pad b5 and the fixed contact b12, and a power-off spring b16 is arranged between the magnetic armature b4 and the fixed contact b 12; the magnetic armature b4 is movably connected with the three groups of movable contact rods b11, and the movement of the magnetic armature b4 drives the three groups of movable contact rods b11 to synchronously move.
Referring to fig. 5, the magnetic armature b4 has a circular structure and is provided with three groups of movable contact rod mounting holes, a connecting slot is provided at the outer end of the movable contact rod b11, and the movable contact rod b11 is inserted into the circular magnetic armature b4 and is fixed by the connecting slot.
Referring to fig. 6, the movable contact rod wiring cylinder b14 has a cylindrical structure, the outer wall of the movable contact rod b11 is in contact fit with the inner wall of the movable contact rod wiring cylinder b14 through a movable ring contact b10, the movable ring contact b10 is made of a metal wear-resistant material, and a process hole sealing plug b15 is arranged at the bottom of the electric appliance protection sleeve b 2.
In addition, the fixed contact b12 is of an annular structure, a groove is formed in the outer surface of the annular structure, and the magnetic coil b6 is wound in the groove.
The invention relates to a method for using a special starting switch device for an electric submersible pump for layered oil extraction, which adopts the technical scheme that the method comprises the following steps:
one end of the power cable is connected with the fixed binding post b9 on the upper side of the fixed contact b12, and one end of the power cable is connected with the fixed binding post b9 on the lower side of the fixed contact b 12; the magnetic generating coil b6 wound in the fixed contact b12 is connected with a control wire; at the position of
When the control line is electrified, the magnetic force is generated by the magnetic generating coil b6 of the special starting switch device for the electric submersible pump for layered oil extraction, so that the magnetic armatures b4 on two sides of the fixed contact b12 are attracted to move, the outer walls of the three groups of movable contact rods b11 are respectively contacted and matched with the inner wall of the movable contact rod wiring cylinder b14 through the movable ring contact b10, and then the three groups of movable contact rods b11 are driven to move and contact the fixed contact b12, so that the power cable is electrified, the electric submersible pump starts to work, and oil is output to the ground;
when the electric submersible pump needs to be turned off, the control line is powered off, the magnetic generating coil b6 is powered off to lose magnetic force, and as a plurality of groups of power-off springs b16 are arranged between the magnetic armature b4 and the fixed contact b12, the magnetic armature b4 is pushed away by the power-off springs b16, and then the three groups of movable contact rods b11 are driven to move away from the fixed contact b12, so that the power cable is powered off, and the electric submersible pump stops working.
In addition, the invention is applied to the layered oil extraction device of the common power line of the double electric submersible pumps, comprising a sleeve 1, a tail pipe 2, a production pipe column 9, a wellhead flange 10, a large four-way 12 and a hanger 17, wherein the large four-way 12 is arranged above the wellhead flange 10, and the production pipe column 9, the electric submersible pump and the tail pipe 2 are put into the sleeve 1 through the hanger 17, which is characterized in that: the electric submersible pump adopts a lower electric submersible pump 3 and an upper electric submersible pump 6, and further comprises a lower starting switch 4, a lower cable passing packer 5, an upper starting switch 7, an upper cable passing packer 8, a lower starting switch control line 13, an upper starting switch control line 14, a three-phase power line 15 and a phase compensator 16, wherein the lower electric submersible pump 3, the lower starting switch 4, the lower cable passing packer 5, the upper electric submersible pump 6, the upper starting switch 7, the phase compensator 16 and the upper cable passing packer 8 are connected through a production string 9, the lower starting switch 4 and the lower electric submersible pump 3 are arranged below the lower cable passing packer 5, and the upper electric submersible pump 6, the upper starting switch 7 and the phase compensator 16 are arranged between the lower cable passing packer 5 and the upper cable passing packer 8; the second power cable of the lower electric submersible pump 3 is upwards connected in parallel to the first power cable of the upper electric submersible pump 6 along the lower cable passing packer 5, and the first power cable passes through the upper cable passing packer 8 and is connected to the three-phase power line 15 along the threading hole of the large four-way joint 12 of the wellhead; the lower layer starting switch control line 13 of the lower layer electric submersible pump 3 passes through the cable packer 5 along the lower layer and the cable packer 8 along the upper layer, and then passes through the threading hole of the large four-way 12 of the wellhead; the upper layer starting switch control line 14 of the upper layer electric submersible pump 6 passes through the upper layer cable passing packer 8 and then passes through the threading hole of the large four-way joint 12 of the wellhead upwards.
The invention relates to a use method of a layered oil extraction device with a double electric submersible pump sharing a power line, which comprises the following steps:
1. and (3) a well-descending construction part:
the production pipe column 9 is used for connecting the lower electric submersible pump 3, the lower starting switch 4, the lower cable passing packer 5, the upper electric submersible pump 6, the upper starting switch 7, the phase compensator 16 and the upper cable passing packer 8, the lower starting switch 4 and the lower electric submersible pump 3 are arranged below the lower cable passing packer 5, and the upper electric submersible pump 6, the upper starting switch 7 and the phase compensator 16 are arranged between the lower cable passing packer 5 and the upper cable passing packer 8; the second power cable of the lower electric submersible pump 3 is upwards connected in parallel to the first power cable of the upper electric submersible pump 6 along the lower cable passing packer 5, and the first power cable passes through the upper cable passing packer 8 and is connected to the three-phase power line 15 along the threading hole of the large four-way joint 12 of the wellhead; the lower layer starting switch control line 13 of the lower layer electric submersible pump 3 passes through the cable packer 5 along the lower layer and the cable packer 8 along the upper layer, and then passes through the threading hole of the large four-way 12 of the wellhead; the upper layer starting switch control line 14 of the upper layer electric submersible pump 6 passes through the upper layer cable passing packer 8 and then upwards passes through the threading hole of the large four-way 12 of the wellhead, so that a switch of the control lines of two electric submersible pumps and a switch of a three-phase power cable are formed at the wellhead on the ground;
2. the production process is as follows:
firstly, a power control switch 18 is closed to transmit electric power to the underground, when a lower layer oil reservoir is required to be mined according to the requirement of a well site, a lower layer control button 20 is pressed, a lower layer starting switch control line 13 is electrified, at the moment, a magnetic force is generated by a magnetic generating coil of a lower layer starting switch 4, so that magnetic armatures b4 on two sides of a fixed contact b12 are attracted and moved, three groups of movable contact rods b11 are driven to move and contact the fixed contact b12, a second power cable is electrified, a lower layer electric submersible pump 3 starts to work, and oil is output to the ground; when the lower electric submersible pump 3 needs to be closed, the lower control button 20 is disconnected, the magnetic generation coil of the lower starting switch 4 is powered off to lose magnetic force, so that the magnetic armature b4 is pushed away by the power-off spring b16, and the three groups of movable contact rods b11 are driven to move away from the fixed contact b12, so that the second power cable is powered off, and the lower electric submersible pump 3 stops working;
when the upper layer oil reservoir is required to be mined, an upper layer control button 19 is pressed, an upper layer starting switch control line 14 is electrified, at the moment, a magnetic force is generated by a magnetic generating coil of an upper layer starting switch 7, so that magnetic armatures b4 on two sides of a fixed contact b12 are attracted to move, and three groups of movable contact rods b11 are driven to move to contact the fixed contact b12, a first power cable is electrified, an upper layer electric submersible pump 6 starts to work, and oil is output to the ground; when the upper electric submersible pump 6 needs to be closed, the upper control button 19 is disconnected, the magnetic generation coil of the upper starting switch 7 is powered off to lose magnetic force, so that the magnetic armature b4 is pushed away by the power-off spring b16, and the three groups of movable contact rods b11 are driven to move away from the fixed contact b12, so that the first power cable is powered off, and the upper electric submersible pump 6 stops working;
when the upper layer oil reservoir and the lower layer oil reservoir are required to be simultaneously exploited, the upper layer control button 19 and the lower layer control button 20 are simultaneously opened, so that the upper layer electric submersible pump 6 and the lower layer electric submersible pump 3 can be simultaneously operated, and the simultaneous exploitation of the two oil reservoirs is realized.
The above description is only a few preferred embodiments of the present invention, and any person skilled in the art may make modifications to the above described embodiments or make modifications to the same. Therefore, any simple modification or equivalent made according to the technical solution of the present invention falls within the scope of the protection claimed by the present invention.
Claims (8)
1. The utility model provides a special starting switch device of electric submersible pump for layered oil recovery which characterized in that: the power cable contact device comprises a central tube (b 1), an electric appliance protective sleeve (b 2), an incoming line wiring insulating pad (b 3), an outer wall insulating protective sleeve (b 7), an outgoing line wiring insulating pad (b 8), a power cable contact device, a control line contact switching device and a power-off spring device, wherein the outer wall of the central tube (b 1) is provided with the outer wall insulating protective sleeve (b 7) and the electric appliance protective sleeve (b 2), a cylindrical insulating cavity is formed between the outer wall insulating protective sleeve (b 7) of the central tube (b 1) and the electric appliance protective sleeve (b 2), three groups of power cable contact devices and three groups of power-off spring devices are arranged in the cylindrical insulating cavity at intervals in sequence, and the control line contact switching device is arranged in the middle of the outer wall insulating protective sleeve (b 7); the three groups of power cable contact devices and the three groups of power-off spring devices are driven to be in contact with each other or to be disconnected with each other by the control line contact switch device so as to realize power off.
2. The starting switch device special for the electric submersible pump for layered oil extraction according to claim 1, which is characterized in that: the power cable contact device comprises a fixed binding post (b 9), a movable ring contact (b 10), a movable contact rod (b 11), a magnetic armature insulating pad (b 13) and a movable contact rod wiring cylinder (b 14), wherein the movable contact rod wiring cylinder (b 14) is respectively fixed on two sides of the fixed contact point (b 12), the movable contact rod (b 11) which is in sliding fit is arranged in the movable contact rod wiring cylinder (b 14), a plurality of movable ring contacts (b 10) are arranged on the outer wall of the movable contact rod (b 11), the root parts of the two movable contact rod wiring cylinders (b 14) are respectively provided with the fixed binding post (b 9), and the fixed contact rod wiring cylinders are connected with a power cable through the fixed binding posts (b 9).
3. The starting switch device special for the electric submersible pump for layered oil extraction according to claim 1, which is characterized in that: the control line contact switch device comprises a fixed contact (b 12) and a magnetic generation coil (b 6), wherein the fixed contact (b 12) is positioned in the middle of the outer wall of the central tube (b 1), the magnetic generation coil (b 6) with an insulating layer is wound in the fixed contact (b 12), and an upper-layer starting switch control line (14) is connected to the magnetic generation coil (b 6).
4. The starting switch device special for the electric submersible pump for layered oil extraction according to claim 1, which is characterized in that: the power-off spring device comprises an incoming line wiring insulating pad (b 3), a magnetic armature (b 4), an insulating isolation pad (b 5) and an outgoing line wiring insulating pad (b 8), wherein the magnetic armature (b 4), the insulating isolation pad (b 5) and a power-off spring (b 16) are arranged between the incoming line wiring insulating pad (b 3) and a fixed contact (b 12), and the power-off spring (b 16) is arranged between the magnetic armature (b 4) and the fixed contact (b 12); the magnetic armature (b 4) is positioned between the insulating isolation pad (b 5) and the fixed contact (b 12), and a power-off spring (b 16) is arranged between the magnetic armature (b 4) and the fixed contact (b 12); the magnetic armature (b 4) is movably connected with the three groups of movable contact rods (b 11), and the movement of the magnetic armature (b 4) drives the three groups of movable contact rods (b 11) to move synchronously.
5. The special starting switch device for the electric submersible pump for layered oil extraction according to claim 4, which is characterized in that: the magnetic armature (b 4) is of a circular ring structure and is provided with three groups of movable contact rod mounting holes, the outer end of the movable contact rod (b 11) is provided with a connecting clamping groove, and the movable contact rod (b 11) is inserted into the circular ring-shaped magnetic armature (b 4) and is fixed through the connecting clamping groove.
6. The special starting switch device for the electric submersible pump for layered oil extraction according to claim 2, which is characterized in that: the movable contact rod wiring cylinder (b 14) is of a cylindrical structure, the outer wall of the movable contact rod (b 11) is in contact fit with the inner wall of the movable contact rod wiring cylinder (b 14) through a movable ring contact (b 10), the movable ring contact (b 10) is made of a metal wear-resistant material, and a process hole sealing plug (b 15) is arranged at the bottom of the electric appliance protection sleeve (b 2).
7. The special starting switch device for the electric submersible pump for layered oil extraction according to claim 2, which is characterized in that: the fixed contact (b 12) is of an annular structure, a groove is formed in the outer surface of the annular structure, and a magnetic coil (b 6) is wound in the groove.
8. A method of using the electrical submersible pump dedicated start-up switching apparatus for stratified oil recovery as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
one end of the power cable is connected with a fixed binding post (b 9) on the upper side of the fixed contact (b 12), and one end of the power cable is connected with the fixed binding post (b 9) on the lower side of the fixed contact (b 12); a magnetic generating coil (b 6) wound in the fixed contact (b 12) is connected with a control wire; at the position of
When the control line is electrified, a magnetic force is generated by a magnetic generating coil (b 6) of a special starting switch device for the electric submersible pump for layered oil extraction, so that magnetic armatures (b 4) on two sides of a fixed contact (b 12) are attracted to move, the outer walls of three groups of movable contact rods (b 11) are respectively contacted and matched with the inner wall of a movable contact rod wiring cylinder (b 14) through movable ring contacts (b 10), and then the three groups of movable contact rods (b 11) are driven to move and contact the fixed contact (b 12), a power cable is electrified, the electric submersible pump starts to work, and oil is output to the ground;
when the electric submersible pump needs to be turned off, the control line is powered off, the magnetic generating coil (b 6) is powered off to lose magnetic force, and as a plurality of groups of power-off springs (b 16) are arranged between the magnetic armature (b 4) and the fixed contact (b 12), the magnetic armature (b 4) is pushed away by the power-off springs (b 16), and then the three groups of movable contact rods (b 11) are driven to move away from the fixed contact (b 12), so that the power cable is powered off, and the electric submersible pump stops working.
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| CN202011096875.8A CN112216538B (en) | 2020-10-14 | 2020-10-14 | Special starting switch device and method for electric submersible pump for layered oil extraction |
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| CN202011096875.8A CN112216538B (en) | 2020-10-14 | 2020-10-14 | Special starting switch device and method for electric submersible pump for layered oil extraction |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203716940U (en) * | 2014-02-19 | 2014-07-16 | 中国海洋石油总公司 | Y pipe electric submersible pump production string with hydraulic control sliding sleeve |
| CN208686359U (en) * | 2018-07-18 | 2019-04-02 | 百斯迈奇能源技术服务（深圳）有限公司 | Flow string and extracting device of oil |
| CN111255673A (en) * | 2020-02-26 | 2020-06-09 | 江苏华扬液碳有限责任公司 | Reciprocating type variable-frequency deep submersible pump and control method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0801156D0 (en) * | 2008-01-23 | 2008-02-27 | Pump Tools Ltd | Apparatus and method |
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- 2020-10-14 CN CN202011096875.8A patent/CN112216538B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203716940U (en) * | 2014-02-19 | 2014-07-16 | 中国海洋石油总公司 | Y pipe electric submersible pump production string with hydraulic control sliding sleeve |
| CN208686359U (en) * | 2018-07-18 | 2019-04-02 | 百斯迈奇能源技术服务（深圳）有限公司 | Flow string and extracting device of oil |
| CN111255673A (en) * | 2020-02-26 | 2020-06-09 | 江苏华扬液碳有限责任公司 | Reciprocating type variable-frequency deep submersible pump and control method thereof |
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| CN112216538A (en) | 2021-01-12 |
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Effective date of registration: 20231120 Address after: No. 86 Wanxing Road, Changyang, Fangshan District, Beijing, 102400- N3809 (cluster registration) Applicant after: Beijing Hechuan Intelligent Technology Co.,Ltd. Address before: 257000 oil production technology research institute of Shengli Oilfield, xisanlu, Dongying District, Dongying City, Shandong Province Applicant before: Chen Hairong |
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