阅读说明：本技术 用于潜油驱动装置的连接器、连接模块和驱动装置 (Connector for submersible driving device, connecting module and driving device ) 是由 刘杰 邢韬 于 2020-07-01 设计创作，主要内容包括：本发明涉及石油开采设备控制技术领域,公开了一种用于潜油驱动装置的连接器、连接模块和驱动装置。所述连接器包括导电组件(11)、用于容纳所述导电组件(11)的连接器外壳(12)以及设置在所述导电组件和所述连接器外壳之间的沿所述导电组件的长度延伸方向间隔布置的第一绝缘件(131)和第二绝缘件(132)；所述导电组件包括由多个导电柱(1121)组成的第一导电束(112)；每个所述导电柱穿设在所述第一绝缘件和所述第二绝缘件中并和所述第一绝缘件之间采用陶瓷绝缘；其中,所述第二绝缘件采用弹性绝缘材料以使得所述连接器外壳和所述导电柱均与所述第二绝缘件紧密接触。本发明具有良好的密封性和绝缘性,能够传递电能或电信号且结构简单。(The invention relates to the technical field of oil exploitation equipment control, and discloses a connector, a connecting module and a driving device for an oil-submersible driving device. The connector comprises a conductive component (11), a connector housing (12) for accommodating the conductive component (11), and a first insulating member (131) and a second insulating member (132) which are arranged between the conductive component and the connector housing and are spaced along the length extension direction of the conductive component; the conductive assembly comprises a first conductive bundle (112) consisting of a plurality of conductive posts (1121); each conductive column penetrates through the first insulating part and the second insulating part and is insulated from the first insulating part by adopting ceramic; the second insulating part is made of elastic insulating materials so that the connector shell and the conductive columns are in close contact with the second insulating part. The invention has good sealing property and insulating property, can transmit electric energy or electric signals and has simple structure.)

1. A connector for a submersible drive device, the connector comprising a conductive member (11), a connector housing (12) for receiving the conductive member (11), and first and second insulating members (131, 132) disposed between the conductive member (11) and the connector housing (12) and spaced apart along a length extension of the conductive member (11); the conductive assembly (11) comprises a first conductive bundle (112) consisting of a plurality of conductive posts (1121); each conductive post (1121) penetrates through the first insulating piece (131) and the second insulating piece (132) and is insulated from the first insulating piece (131) by adopting ceramic; wherein the second insulating part (132) is made of elastic insulating material so that the connector housing (12) and the conductive post (1121) are both in close contact with the second insulating part (132).

2. Connector according to claim 1, characterized in that said conductive assembly (11) comprises a second conductive bundle (111) connected to said first conductive bundle (112); one end of the second conductive beam (111) departing from the first conductive beam (112) penetrates out of the first end of the connector shell (12), and one end of the first conductive beam (112) departing from the second conductive beam (111) penetrates out of the second end of the connector shell (12).

3. The connector according to claim 2, wherein the first insulating member (131) includes a supporting body (1311) and a plurality of first through holes (1312) formed on the supporting body (1311) and extending in a length direction of the conductive member (11), and a ceramic sleeve fitted in each of the first through holes (1312); each conductive post (1121) is respectively arranged in the corresponding ceramic sleeve in a penetrating mode.

4. The connector according to claim 2, wherein the second insulating member (132) includes a body (1321) and a second through hole (1322) formed in the body (1321) extending in a length direction of the conductive member (11); one end of the conductive post (1121) departing from the second conductive bundle (111) penetrates through the corresponding second through hole (1322) and then penetrates out of the second end of the connector housing (12).

5. A connection module, characterized in that it comprises a connector according to any one of claims 1-4 and a first connection unit (32); the first connection unit (32) includes first and second cavities (325, 326) formed at both ends of the first connection unit (32) and extending in an axial direction, and a partition (327) partitioning the first and second cavities (325, 326); the partition plate (327) is provided with a first hole structure (328) which is communicated with the first cavity (325) and the second cavity (326), and the connector is arranged in the first hole structure (328) in a penetrating mode.

6. The connection module according to claim 5, characterized in that it comprises a first detection unit (34); the first connection unit (32) includes a second hole structure (322) formed on the partition plate (327) and communicating the first cavity (325) and the second cavity (326); the first detection unit (34) is arranged in the second hole structure (322) in a penetrating mode.

7. A connection module according to claim 6, characterised in that it comprises a first valve (33) and a third aperture structure (323) opening in the partition (327) and communicating with the second cavity (326), the first valve (33) being mounted in the third aperture structure (323).

8. A drive arrangement, characterized in that the drive arrangement comprises a connection module according to any of claims 5-7 and a drive body (5), an outer housing (2), a base unit (4), wherein the connection module is provided as a head unit (3); the head unit (3) and the bottom unit (4) are respectively sealed at two ends of the outer shell (2), the actuator main body (5) is limited in a first accommodating cavity defined by the outer shell (2), the head unit (3) and the bottom unit (4), and a second accommodating cavity defined by the outer shell (2), the head unit (3) and the bottom unit (4) and the actuator main body (5) is filled with insulating fluid.

9. The drive device according to claim 8, characterized in that the drive device comprises an air bag (43) accommodated in the first accommodation chamber, the insulating fluid comprising a gas and a liquid, the gas being accommodated in the air bag (43).

10. The drive device according to claim 9, characterized in that the bottom unit (4) comprises a bottom joint (44), the first receiving chamber comprises a fourth receiving chamber (443) formed on the bottom joint (44), and the airbag (43) is received in the fourth receiving chamber (443).

Technical Field

The invention relates to the technical field of oil exploitation equipment control, in particular to a connector, a connecting module and a driving device.

Background

At present, the oil-submersible motor is widely used in oil fields to drive the oil-submersible electric pump to absorb crude oil, the traditional oil-submersible electric pump system drives the underground oil-submersible motor and the oil-submersible electric pump by a ground control device, current is transmitted to the underground oil-submersible motor by a power cable, the starting and the speed regulation control of the oil-submersible motor are realized, and the oil-submersible electric pump system is a 'remote driving' mode. The mode has low transmission efficiency, is difficult to ensure driving performance under the conditions of starting and variable load, and has low energy conversion efficiency of the submersible motor. At present, although some submersible motors adopt a downhole controller to drive the submersible motor in a downhole mode, some submersible motors have the safety problems of poor heat dissipation, complex structure and poor insulation and sealing. In order to solve the above problems, it is urgently needed to provide a driving device which can directly drive the submersible motor to work underground, has good heat dissipation performance, and has good sealing performance and insulation performance.

Disclosure of Invention

The invention aims to solve the problems of poor heat dissipation, complex structure, poor insulation, poor sealing and other potential safety hazards in the prior art, and provides a driving device which can directly drive an oil-submersible motor to work underground, has good heat dissipation performance, good sealing performance and insulation performance, and can detect underground temperature and pressure in real time.

In order to achieve the above object, an aspect of the present invention provides a connector for a submersible driving device, the connector comprising a conductive member, a connector housing for accommodating the conductive member, and a first insulating member and a second insulating member disposed between the conductive member and the connector housing and spaced apart in a direction in which a length of the conductive member extends; the conductive assembly comprises a first conductive bundle comprised of a plurality of conductive posts; each conductive column penetrates through the first insulating part and the second insulating part and is insulated from the first insulating part by adopting ceramic; the second insulating part is made of elastic insulating materials so that the connector shell and the conductive columns are in close contact with the second insulating part. Further, the conductive assembly includes a second conductive bundle connected to the first conductive bundle; one end, deviating from the first conductive bundle, of the second conductive bundle penetrates out of the first end of the connector shell, and one end, deviating from the second conductive bundle, of the first conductive bundle penetrates out of the second end of the connector shell.

Further, the first insulating member includes a supporting body and a plurality of first through holes formed on the supporting body and extending in a length direction of the conductive member, and a ceramic sleeve mounted in each of the first through holes; each conductive column is respectively arranged in the corresponding ceramic sleeve in a penetrating mode.

Further, the second insulating part comprises a body and a second through hole formed in the body and extending along the length direction of the conductive component; one end of the conductive column, which is far away from the second conductive bundle, penetrates through the second end of the connector shell after penetrating through the corresponding second through hole.

A second aspect of the present invention provides a connection module including the above-described connector and a first connection unit; the first connection unit includes first and second cavities formed at both end portions thereof and extending in an axial direction, and a partition plate partitioning the first and second cavities; the partition plate is provided with a first hole structure communicated with the first cavity and the second cavity, and the connector is arranged in the first hole structure in a penetrating mode.

Further, the connection module comprises a first detection unit; the first connection unit includes a second hole structure formed on the partition plate and communicating the first cavity and the second cavity; the first detection unit penetrates through the second hole structure.

Further, the connection module comprises a first valve and a third hole structure which is arranged on the partition plate and communicated with the second cavity and the third hole structure, and the first valve is installed in the third hole structure.

A third aspect of the invention provides a drive device comprising the above-described connection module and a driver body, an outer housing, a base unit, wherein the connection module is provided as a head unit; the head unit and the bottom unit are respectively blocked at two ends of the outer shell, the actuator main body is limited in a first accommodating cavity defined by the outer shell, the head unit and the bottom unit, and a second accommodating cavity defined by the outer shell, the head unit and the bottom unit and the actuator main body is filled with insulating fluid.

Further, the driving device includes an air bag accommodated in the first accommodation chamber, and the insulating fluid includes a gas and a liquid, the gas being accommodated in the air bag.

Further, the bottom unit includes a bottom joint, the first accommodation chamber includes a fourth accommodation chamber formed on the bottom joint, and the airbag is accommodated in the fourth accommodation chamber.

With the above technical solution, by accommodating a conductive assembly including a second conductive bundle composed of a plurality of conductive posts in a connector housing and providing a first insulating member and a second insulating member between the conductive assembly and the connector housing; each conductive column penetrates through the first insulating part and the second insulating part and is insulated from the first insulating part by adopting ceramic; the second insulating part is made of elastic insulating materials; thus, the invention has good sealing property and insulation property and can transmit electric energy or electric signals.

Drawings

FIG. 1 is a schematic view of a connector according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a connection module having one embodiment of the connector of FIG. 1;

FIG. 3 is a schematic structural view of the head unit of FIG. 2;

fig. 4 and 5 are schematic structural views of the first connection unit in fig. 3;

FIG. 6 is a sectional view of the first coupling unit of FIG. 3;

fig. 7 and 8 are schematic structural views of the connector body of fig. 3;

FIG. 9 is a cross-sectional view of the connector body of FIG. 3;

FIG. 10 is a schematic view of the structure of the bottom unit of FIG. 2;

FIGS. 11 and 12 are schematic views of the construction of the bottom joint of FIG. 10;

fig. 13 is a sectional view of the connector body of fig. 10.

Description of the reference numerals

1-a connector; 11-a conductive component; 111-a second conductive bundle; 112-a first conductive bundle; 1121-conductive posts; 12-a connector housing; 122-end terminal tail cap; 121-wire end housing; 123-wire end threaded cap; 124-a board end housing; 125-a second seal ring; 13-an insulating component; 131-a first insulator; 1311-a support; 1312-a first via; 132-a second insulator; 1321-body; 1322-a second through hole; 2-an outer shell; 3-a head unit; 31-a connector assembly; 32-a first connection unit; 321-a first connecting structure; 322-a second pore structure; 323-a third aperture configuration; 324-a second connecting structure; 325 — a first cavity; 326-a second cavity; 327-a separator; 328-a first pore structure; 33-a first valve; 34-a first detection unit; 35-a second connection unit; 351-a third connecting structure; 352-first annular groove; 353-a fourth connecting structure; 354-mounting through holes; 36-a first sealing gasket; 4-a bottom unit; 41-bottom tray; 411 — third via; 43-air bag; 44-a bottom joint; 441-fifth connecting structure; 442-a second annular groove; 443-a fourth receiving chamber; 444-fourth cavity; 445-sixth connecting structure; 45-a second valve; 5-the driver body.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to achieve the above object, in one aspect, the present invention provides a connector for a submersible driving device, as shown in fig. 1, the connector 1 includes a conductive member 11, a connector housing 12 for accommodating the conductive member 11, and a first insulating member 131 and a second insulating member 132 disposed between the conductive member 11 and the connector housing 12 and spaced apart from each other along a length extension direction of the conductive member 11; the conductive assembly 11 comprises a first conductive bundle 112 composed of a plurality of conductive pillars 1121; each conductive post 1121 penetrates through the first insulating member 131 and the second insulating member 132 and is insulated from the first insulating member 131 by ceramic; the use of ceramic insulation can both improve the insulation level and provide the rigidity required by the conductive assembly 11, wherein the second insulating member 132 is made of elastic insulating material so that the connector housing 12 and the conductive post 1121 are both in close contact with the second insulating member 132, and thus the second insulating member 132 performs the function of insulation and sealing. The invention has good sealing property and insulating property, can transmit electric energy or electric signals and has simple structure.

Further preferably, the first insulator 131 is provided with a positioning structure. The axial position of the second insulating member 132 can be defined by this positioning mechanism. Preferably, the conductive assembly 11 comprises a second conductive strand 111 connected to the first conductive strand 112; the second conductive beam 111 and the first conductive beam 112 extend in the same direction and are connected end to end; the end of the second conductive bundle 111 facing away from the first conductive bundle 112 is extended out from the first end of the connector housing 12, and the end of the first conductive bundle 112 facing away from the second conductive bundle 111 is extended out from the second end of the connector housing 12. The transmission of power and/or signal lines from one end of the connector to the other end of the connector is accomplished by a first conductive bundle 112.

The connector housing 12 includes a wire end tail cap 122, a wire end housing 121, a plate end housing 124, and a second sealing ring 125, which are sequentially arranged in a connecting direction from the second conductor beam 111 to the first conductor beam 112. The wire end tail cover 122, the wire end housing 121, the board end housing 124 and the second sealing ring 125 define an open accommodating cavity with two open ends, and one end of the first conductive bundle 112, which is away from the second conductive bundle 111, passes through the board end housing 124 to pass through the first end of the connector housing 12; the end of the second conductor strand 111 facing away from the first conductor strand 112 is received in a board end housing 124. Wherein the wire end tail cap 122 comprises stepped sleeves of different radii; the big end of the stepped sleeve is in threaded connection with the wire end shell 121, the small end of the stepped sleeve is used for the second conductive bundle 111 to come in and go out, the second conductive bundle 111 is composed of a copper wire and an insulating outer layer wrapping the copper wire, and the insulating outer layer is in close contact with the inner hole of the small end of the stepped sleeve; the second conductive bundle 111 is connected with the conductive pillar 1121 through a copper wire, and the wire end tail cap 122 is screwed with the wire end housing 121 to perform a locking function; the line end housing 121 is configured as a cylindrical structure to receive the first conductive bundle 112, the first insulator 131 and the second insulator 132 in a receiving cavity defined by the cylindrical structure for protection, and both ends of the cylindrical structure are provided with external threads to connect the line end tail cover 122 and the board end housing 124, respectively, via the external threads at both ends of the cylindrical structure.

It is further preferred that the wire end housing 121 comprises a flange attached to the outer circumference of the cylindrical structure in which the end of the first conductor beam 112 facing away from the second conductor beam 111 is received for fixing the connector 1. In operation, the end of the first conductor bundle 112 facing away from the second conductor bundle 111 is connected to the driver body 5, such that the tubular structure protects the first conductor bundle 112 from external forces. Wherein the board end housing 124 and the wire end housing 121 are connected and locked by the board end housing 124. A second sealing ring 125 is installed on the side of the plate end housing 124 facing away from the wire end threaded cap 123, and the second sealing ring 125 can play both a sealing role and an insulating role.

Preferably, the first insulator 131 includes a supporting body 1311 and a plurality of first through holes 1312 formed on the supporting body 1311 and extending in a length direction of the conductive member 11, and a ceramic sleeve mounted in each of the first through holes 1312; each conductive post 1121 is respectively inserted into the corresponding ceramic sleeve. By providing the ceramic sleeve, the level of insulation between the conductive post 1121 and the connector housing 12 is increased. The first conductive bundle 112 penetrates through the first insulating member 131 towards one end of the second conductive bundle 111, and is then fixed to the second conductive bundle 111 at an end face of the first insulating member 131 towards one end of the second conductive bundle 111.

Preferably, the second insulating member 132 includes a body 1321 and a second through hole 1322 formed on the body 1321 and extending along the length direction of the conductive component 11; one end of the conductive post 1121, which is away from the second conductive bundle 111, passes through the corresponding second through hole 1322 and then passes through the second end of the connector housing 12. Thus, the conductive posts 1121 are insulated from the connector housing 12 by the second insulating member 132, and one end of the conductive posts 1121 can penetrate through the second end of the connector housing 12 to connect the conductive posts 1121 with other components.

The connector set by the technology can realize the insulation resistance of more than 500 megohms, the voltage resistance of more than 1700 volts, the sealing protection type test pressure of more than 50 megapascals and the environmental temperature resistance of-40 ℃ to 120 ℃. And the insulation sealing under the high-temperature and high-pressure environment is realized.

A second aspect of the invention provides a connection module, as shown in fig. 2, comprising a connector 1 according to the above and a first connection unit 32; the first connection unit 32 includes first and second cavities 325 and 326 formed at both ends of the first connection unit 32 and extending axially, and a partition 327 partitioning the first and second cavities 325 and 326; the partition 327 has a first hole structure 328 formed therein to communicate the first cavity 325 and the second cavity 326, and the connector 1 is inserted into the first hole structure 328. By this arrangement, the first cavity 325 and the second cavity 326 are isolated, and the liquid can be effectively isolated from flowing between the first cavity 325 and the second cavity 326. The connecting module has the technical advantages of the connector.

Preferably, the connection module includes a plurality of connectors 1 mounted on the first connection unit 32. As shown in fig. 2-3, two different connectors 1 are provided in the connection module to form a connector assembly 31; one of the two connectors 1 is a power line dedicated connector, and the other is a signal line dedicated connector. In this way, the transmission of electrical signals and the transmission of electrical energy may be accomplished through the connector assembly 31.

Preferably, the connection module comprises a first detection unit 34; the first connection unit 32 includes a second hole structure 322 formed on the partition 327 and communicating the first cavity 325 and the second cavity 326; the first detecting unit 34 is disposed through the second hole structure 322. The first detection unit 34 is configured as a pressure transmitter, and the pressure transmitter can be configured to detect pressure in real time.

Preferably, the connection module comprises a first valve 33 and a third hole structure 323 opened in the partition 327 and communicating the second cavity 326 with the third hole structure 323, the first valve 33 being installed in the third hole structure 323. In the connection module shown in fig. 3, the first valve 33 is provided with a blocking screw, by means of which gas can be discharged from the receiving space which communicates with the third aperture structure 323.

Preferably, the connection module includes a second connection unit 35 detachably connected with the first connection unit 32; wherein the connector 1 is mounted inside the first connecting unit 32; the end of the first connecting unit 32, which faces away from the second connecting unit 35, is used for connecting a submersible motor; the end of the second connection unit 35 facing away from the first connection unit 32 is used for connecting the driver body 5.

A third aspect of the present invention provides a drive device, as shown in fig. 2, comprising the above-described connection module and a driver main body 5, an outer case 2, a base unit 4, wherein the connection module is provided as a head unit 3; the head unit 3 and the base unit 4 are respectively sealed at both ends of the outer case 2, and confine the actuator main body 5 in a first accommodation chamber defined by the outer case 2 and the head unit 3 and the base unit 4, and a second accommodation chamber defined by the outer case 2 and the head unit 3 and the base unit 4 and the actuator main body 5 is filled with an insulating fluid. The driver main body 5 comprises a bracket, and an electronic device and a circuit board which are fixed on the bracket, wherein two ends of the bracket are stretched by pretightening force so as to ensure that the device fixed on the bracket does not touch the inner wall of the outer shell 2; and elastic gaskets are arranged at two ends of the fixing holes of all the circuit boards, so that the functions of buffering and preventing vibration are achieved. The driving device ensures that electric energy and electric signals are communicated and insulated from each other inside and outside the driving device through the connector 1, and dissipates heat for the driving device through insulating fluid.

Further, the driving apparatus further includes a temperature second detection unit provided on the driver main body 5. The second temperature detection unit comprises a temperature sensor, and the temperature of the motor can be detected through the temperature sensor, so that the motor state can be monitored in real time.

The driving device has the technical advantage of good heat dissipation in addition to the technical advantages of the connector 1. Since heat generated by the driver main body 5 can be conducted to the outer case 2 through the insulating fluid and dissipated, heat is prevented from accumulating in the outer case 2.

Further, the driving device includes an air bag 43 accommodated in the first accommodating cavity, and the insulating fluid includes a gas and a liquid, wherein the liquid injected into the first accommodating cavity includes, but is not limited to, transformer oil, and in this application, the arrangement of a portion of the gas in the first accommodating cavity can prevent the liquid from affecting the whole driving device when the pressure changes due to thermal expansion and contraction. In order to fix the gas in a set position, the gas is contained in the airbag 43.

Further, the bottom unit 4 includes a bottom joint 44, the first accommodation chamber includes a fourth accommodation chamber 443 formed on the bottom joint 44, and the airbag 43 is accommodated in the fourth accommodation chamber 443. Thus, the position of the gas is further limited by limiting the position of the air bag 43, so that the liquid is ensured to be distributed around the driver main body 5, when an electrical element on the driver main body 5 works, the generated heat is transferred to the liquid, the liquid is heated and expanded, the air bag 43 can be compressed to play a role in buffering, and meanwhile, the heat dissipation effect is not influenced.

Further preferably, as shown in fig. 2-3, the connecting module comprises two of the connectors, the first conductive bundle 112 in one of the two connectors comprises five of the conductive posts 1121, and the connector is used as a power line connector; the first conductive bundle 112 in the other of the two connectors includes ten of the conductive posts 1121 with the connector acting as a signal line connector. Of course, a plurality of connectors may be provided in the connection module, and the conductive posts 1121 in the power line connector are not limited to five, and the conductive posts 1121 in the signal line connector are not limited to ten. The number of the conductive posts 1121 is set according to actual requirements. The conductive pillars 1121 may be copper pillars to increase the energizable current.

Preferably, the bottom unit 4 includes a bottom tray 41 covering the opening of the fourth accommodation chamber 443 and having a third through hole 411. The air bag 43 is accommodated in the fourth accommodating cavity 443 and is limited by the bottom tray 41, so that the position of the air bag 43 in the first accommodating cavity is further limited. Wherein, the air bag 43 is closed after being filled with air, and then is placed in the fourth accommodating cavity 443; the liquid can flow through the third through hole 411 to ensure that the space around the air bag 43 can be filled.

In order to inject or discharge the liquid into or from the first containing chamber, the driving means is provided with a first valve 33 as shown in fig. 3 and a second valve 45 as shown in fig. 10; wherein the first valve 33 is mounted in the third aperture arrangement 323 of the head unit 3 as shown in fig. 4-6; the second valve 45 is mounted in the fourth cavity 444 as shown in fig. 1 and 13. The second valve 45 can be set as an oil filling valve, and the first valve 33 can be set as a blocking screw, so that the second accommodating chamber can be filled with insulating liquid by injecting insulating liquid into the second accommodating chamber through the second valve 45, and simultaneously, the blocking screw is opened, and gas in the second accommodating chamber is discharged from the third hole structure 323 accommodating the blocking screw, so that the second accommodating chamber can be filled with insulating liquid. And vice versa.

In driver main part 5, driver main part 5 includes the support and fixes electron device and the circuit board on the support, and the support both ends receive the pretightning force tensile, can guarantee like this that the electron device of fixing on the support can not touch the inner wall of shell body 2, sets up like this and can effectively cushion. For further shock absorption, elastic gaskets are arranged at two ends of all the electronic device fixing holes.

Wherein the bottom tray 41 is in threaded connection with the outer housing 2 by means of an external thread. The bottom tray 41 further comprises a through hole for penetrating a connecting bolt, and the connecting bolt penetrates through the through hole and is connected with a support with an internal thread hole on the driver main body 5. Thus, when the driver main body 5 and the bottom tray 41 are connected through the connecting bolt, pretightening force can be provided for the support, so that two ends of the support are stretched by the pretightening force, thereby ensuring that the support is fixed stably and further ensuring that an electronic device fixed on the support cannot touch the inner wall of the outer shell 2.

In the driving apparatus, as in the head unit 3 of one embodiment shown in fig. 3, the head unit 3 includes a first connection unit 32 and two connectors 1 mounted on the first connection unit 32, a first valve 33 mounted on a side wall of the first connection unit 32, and a first detection unit 34 mounted on the first connection unit 32 and a second connection unit 35 screw-coupled to the first connection unit 32; wherein the first detection unit 34 is configured to detect the liquid pressure and convert the detected signal into an electrical signal to be supplied to the driver main body 5; as shown in fig. 9, the end of the second connection unit 35 facing away from the first connection unit 32 is provided with a first annular groove 352, and a first sealing gasket 36 as shown in fig. 3 is wrapped around the first annular groove 352 for sealing connection between the second connection unit 35 and the outer housing 2.

As shown in fig. 4 to 6, the first connection unit 32 includes a first connection structure 321 which is an external thread, and is connected with the submersible motor through the first connection structure 321. The first connecting structure 321 is provided with a second connecting structure 324 comprising an external thread at an end facing away from the submersible motor, and the second connecting unit 35 is connected through the second connecting structure 324. As shown in fig. 6, a first cavity 325 is disposed near one end of the first connecting structure 321, a second cavity 326 is disposed near one end of the second connecting structure 324, a partition 327 is disposed between the first cavity 325 and the second cavity 326, a second hole structure 322 is disposed on the partition 327, and the first detecting unit 34 is inserted into the second hole structure 322, wherein the shape of the inner wall of the second hole structure 322 matches the shape of the first detecting unit 34 to ensure good sealing performance. A third hole structure 323 is provided on the side wall of the first connection unit 32, the third hole structure 323 being divided into two parts, a radial hole and an axial hole, through which the first valve 33 is mounted, the first valve 33 and the radial hole being used to discharge gas when liquid flows from the first receiving chamber into the second cavity 326.

Fig. 7 to 9 are schematic structural views of the second connection unit 35, the second connection unit 35 is a cylindrical structure, and as shown in fig. 9, the second connection unit 35 includes a fourth connection structure 353 which is an external thread, and the head unit 3 is fixedly connected to the outer housing 2 by the fourth connection structure 353 and the internal thread of the outer housing 2, and at the same time, the second connection unit 35 further includes a mounting through hole 354 which is provided at one end of the second connection unit 35 near the actuator main body 5 and through which the mounting through hole 354 is connected to the actuator main body 5. A third connecting structure 351 provided as an internal thread is included at an end of the second connecting unit 35 facing the first connecting unit 32, and the first connecting unit 32 and the second connecting unit 35 are threadedly connected by the external thread second connecting structure 324 and the internal thread third connecting structure 351.

One embodiment of the base unit 4 as shown in fig. 10, the base unit 4 is comprised of a base tray 41, a second sealing gasket 42, a bladder 43, a base fitting 44 and a second valve 45. Wherein the bottom tray 41 is used for connecting with the driver body 5 and the outer shell at the same time; the connection between the base joint 44 and the outer casing 2 is sealed by a second sealing gasket 42; the air bag 43 is a rubber air bag for fixing the position of air in the first accommodating cavity, when liquid in the first accommodating cavity expands with heat and contracts with cold, the air bag 43 plays a role in buffering, the influence of the expansion with heat and the contraction with cold on the driving device is eliminated, and meanwhile, the heat dissipation is not influenced; wherein, the bottom connector 44 is used for installing the air bag 43 and the second valve 45 and is connected with the outer shell 2; the second valve 45 is also used to fill the first receiving chamber with oil. As shown in fig. 13, the bottom joint 44 includes a fourth accommodating cavity 443 and a fourth cavity 444 which are axially arranged and communicate with each other, wherein the fourth accommodating cavity 443 is used for accommodating the airbag 43; the fourth cavity 444 is used for mounting the second valve 45; a fifth connecting structure 441 which is an external thread and is used for connecting the outer shell 2 is arranged at one end of the outer wall of the bottom joint 44; at the other end facing away from said fifth connecting structure 441 a sixth connecting structure 445 is provided, which is externally threaded, by means of which sixth connecting structure 445 the anchor is connected. A plurality of second annular grooves 442 are included in the outer periphery of the bottom sub 44, and by fitting the second sealing gaskets 42 of fig. 10 into the second annular grooves 442, sealing between the bottom sub 44 and the outer casing 2 is achieved, enhancing the sealing effect of the driving means.

When the driving device is used for driving the underground submersible motor, the direct driving of the motor can be realized underground, so that the electric utilization rate and the oil pumping efficiency can be improved to the maximum extent, the pressure and the temperature can be directly sampled underground through the first detection unit 34 for pressure detection and the second detection unit for temperature detection, the motor encoder signal is directly sampled, and then the real-time monitoring of the motor state is realized, so that the control capability of the motor is improved.

The underground temperature and pressure are detected in real time by the first detection unit 34 which is arranged on the driving device as a pressure transmitter and the second detection unit which is arranged as a temperature sensor, so that the adaptability of the submersible motor driven by the driving device to the underground environment is effectively ensured, the purpose of remote communication with a ground control device is realized, and the communication distance can exceed 2000 meters, so that the underground state can be monitored in real time on the ground, and various operation commands are sent.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.