CN220151591U - Sealing structure of submersible electric pump - Google Patents

Abstract

The utility model discloses a sealing structure of an electric submersible pump, which comprises a pump body and a plug, wherein a concave hole for accommodating is formed in one side wall surface of the periphery of the pump body, a corrugated pipe for protecting is arranged on the bottom surface of the inner side of the concave hole, a socket which is spliced with the plug is arranged at the top end of the corrugated pipe, a rotary joint for protecting is arranged on the peripheral surface of the socket, a threaded pipe for connecting is welded at one end of the rotary joint far away from the socket, and the plug and the socket are connected through the design of the concave hole, the corrugated pipe, the socket, a spiral groove, the rotary joint and the threaded pipe, so that a layer of airtight protective layer is conveniently arranged on the periphery of the plug and the socket after the plug are connected, the possibility of leakage of well fluid in an oil well is unlikely to occur, the situation of short circuit is reduced after the plug and the socket are connected, and the safety after the plug and the socket are connected is improved, and the electric submersible pump is conveniently, safely and stably supplied with power and can be operated.

Description

Sealing structure of submersible electric pump

Technical Field

The utility model relates to the technical field of submersible electric pumps, in particular to a seal structure of a submersible electric pump.

Background

The submersible electric pump is a multi-stage centrifugal pump working underground, and is put into the well together with the oil pipe, and a ground power supply transmits electric energy to an underground submersible motor through a transformer, a control screen and a power cable, so that the submersible motor drives the multi-stage centrifugal pump to rotate, the electric energy is converted into mechanical energy, and well fluid in an oil well is lifted to the ground; the power cable can be connected with the wiring end of the submersible motor, so that the submersible motor can work, the power cable is normally bound by using a waterproof adhesive tape after being connected with the submersible motor, and then the submersible motor is conveniently supplied with power, but certain leakage is easy to occur after the power cable is connected with the submersible motor, the phenomenon of short circuit between the power cable and the submersible motor is easy to occur during leakage, and the power cable and the submersible motor are easy to burn out during severe conditions. Therefore, we propose a sealing structure of an electric submersible pump.

Disclosure of Invention

The utility model mainly aims to provide a sealing structure of an electric submersible pump, which is characterized in that through the design of concave holes, corrugated pipes, sockets, screw grooves, rotary joints and screw pipes, a sealed protective layer is conveniently arranged on the periphery of the plug and the socket after the plug and the socket are connected, so that the possibility of leakage of well fluid in an oil well is not easy to occur, the situation of short circuit due to leakage after the connection of the plug and the socket is reduced, the safety of the plug and the socket is improved, the electric submersible pump is conveniently, safely and stably powered and can safely operate, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a submersible electric pump seal structure, includes the pump body and plug, the shrinkage pool that can be used to accomodate is offered on a pump body periphery lateral wall surface, and shrinkage pool inboard bottom surface is equipped with the bellows that can be used to the protection, the bellows top is equipped with the socket that is pegged graft mutually with the plug, the socket periphery surface is equipped with the swivel joint that can be used to the protection, and the one end that the swivel joint kept away from the socket welds the screwed pipe that can be used to connect, the screwed channel that is connected mutually screw thread pipe is offered to the one side that the plug is close to the shrinkage pool;

the annular ring which can be used for connection is formed in one side, close to the concave hole, of the plug and one side, close to the concave hole, of the periphery of the pump body, and the annular ring which is inserted into the annular ring is uniformly formed in one side, close to the concave hole, of the plug and one side, close to the periphery of the pump body, of the concave hole.

Further, a rubber pad for leakage prevention is adhered to one surface of the plug close to the concave hole; the rubber pad is convenient for improving the tightness of the plug after being connected with the pump body.

Further, a side wall surface of the periphery of the threaded pipe is provided with a convex rod which can be used for rotation; the protruding rod makes the screwed pipe rotate more conveniently.

Further, a rubber ring for leakage prevention is adhered to the bottom surface of the inner side of the annular ring; the rubber ring is convenient for improving the tightness of the ring pipe inserted into the annular hole.

Further, the spiral groove is positioned on the inner side of the annular hole; the screw groove is positioned at the inner side of the annular hole, so that the threaded pipe is convenient to connect with the screw groove, and then the annular pipe and the annular hole are convenient to be mutually spliced.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the technical scheme, through the design of the concave holes, the corrugated pipes, the sockets, the screw grooves, the rotary connectors and the threaded pipes, the plug and the socket are connected, a sealed protective layer is conveniently arranged on the periphery of the plug and the socket after the plug and the socket are connected, so that the possibility of leakage of well fluid in an oil well is not easy to occur, the situation that short circuits occur due to leakage after the plug and the socket are connected is reduced, the safety of the plug and the socket after the plug are connected is improved, and the plug and the socket are convenient, safe and stable to supply power to an electric submersible pump and can operate safely.

2. According to the technical scheme, through the design of the annular hole and the annular pipe, after the plug is fixed on the periphery of the pump body by using the screw, the gap between the plug and the pump body is conveniently plugged, so that the leakage condition can not occur between the plug and the pump body, the possibility of leakage is conveniently further reduced, and the compactness after the cable is connected is conveniently improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a seal structure of an electric submersible pump according to the present utility model.

Fig. 2 is a schematic plan view of the inner side structure of a concave hole of a sealing structure of an electric submersible pump according to the utility model.

Fig. 3 is a schematic plan view of a bottom surface structure of a plug of a seal structure of an electric submersible pump according to the present utility model.

In the figure: 1. a pump body; 2. a plug; 3. concave holes; 4. a bellows; 5. a socket; 6. a screw groove; 7. a swivel joint; 8. a threaded tube; 9. an annular hole; 10. a grommet; 11. a rubber ring; 12. a protruding rod; 13. rubber cushion.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-3, a sealing structure of an electric submersible pump comprises a pump body 1 and a plug 2, wherein a concave hole 3 for accommodating is formed in the surface of one side wall of the periphery of the pump body 1, a corrugated pipe 4 for protecting is arranged on the surface of the bottom end of the inner side of the concave hole 3, a socket 5 which is inserted with the plug 2 is arranged at the top end of the corrugated pipe 4, a rotary joint 7 for protecting is arranged on the peripheral surface of the socket 5, a threaded pipe 8 for connecting is welded at one end of the rotary joint 7 away from the socket 5, and a screw groove 6 which is in threaded connection with the threaded pipe 8 is formed in one surface of the plug 2 close to the concave hole 3; an annular hole 9 for connection is formed on one surface of the plug 2 close to the concave hole 3 and on one side of the periphery of the pump body 1, which is positioned on the periphery of the concave hole 3, and a ring pipe 10 which is spliced with the annular hole 9 is uniformly formed on one surface of the plug 2 close to the concave hole 3 and on one side of the periphery of the pump body 1, which is positioned on the periphery of the concave hole 3; the spiral groove 6 is positioned at the inner side of the annular hole 9; the screw groove 6 is positioned at the inner side of the annular hole 9, so that the threaded pipe 8 is convenient to connect with the screw groove 6, and then the annular pipe 10 and the annular hole 9 are convenient to be mutually inserted.

As shown in fig. 2, a rubber pad 13 for leakage prevention is adhered to one surface of the plug 2 close to the concave hole 3; the rubber pad 13 is convenient for improving the tightness of the plug 2 after being connected with the pump body 1; a side wall surface of the periphery of the threaded pipe 8 is provided with a convex rod 12 which can be used for rotation; the convex rod 12 facilitates the rotation of the threaded pipe 8; the inner bottom surface of the annular ring 9 is adhered with a rubber ring 11 for leakage prevention; the rubber ring 11 facilitates the tightness of the insertion of the grommet 10 into the annular ring 9.

It should be noted that, the utility model is a sealing structure of an electric submersible pump, when the electric submersible pump is required to be connected with a cable, the plug 2 of the cable is firstly inserted into the socket 5 in the concave hole 3 on the outer side of the pump body 1, then the staff conveniently takes the threaded pipe 8, as the threaded pipe 8 is connected with the socket 5 through the swivel joint 7, the threaded pipe 8 is conveniently rotated, then the staff takes the threaded pipe 8 and the screw groove 6 on the bottom surface of the threaded pipe 8 are mutually screwed and connected, thereby conveniently protecting the connection part of the plug 2 and the socket 5, forming a closed space between the two, then conveniently inserting the threaded pipe 8 and the socket 5 into the concave hole 3, then the plug 2 drives the ring pipe 10 to be inserted into the ring hole 9 on the outer side of the concave hole 3, meanwhile the ring pipe 10 on the outer side of the concave hole 3 is also inserted into the ring hole 9 on the bottom surface of the plug 2, thereby conveniently plugging gaps between the two, preventing well liquid in an oil well from entering the concave hole 3, and simultaneously setting up a second layer of protection between the two, and simultaneously driving the rubber pad 13 to be matched with the peripheral surface of the plug 2, and automatically setting up a gap between the two layers of the plug 2 and the electric submersible pump body 2, and the electric pump can not be connected with the cable 1, thus the situation can be further improved, and the situation of the leakage condition can be reduced, and the situation can be further improved, and the situation can occur, and the electric pump is more greatly improved, and the situation can be well-insulated.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides an electric submersible pump seal structure, includes pump body (1) and plug (2), its characterized in that, recess (3) that can be used to accomodate are offered on pump body (1) periphery lateral wall surface, and recess (3) inboard bottom surface is equipped with bellows (4) that can be used to protect, bellows (4) top is equipped with socket (5) that peg graft mutually with plug (2), socket (5) peripheral surface is equipped with swivel joint (7) that can be used to protect, and the one end welding that swivel joint (7) kept away from socket (5) has screwed pipe (8) that can be used to connect, screw channel (6) that are connected with screwed pipe (8) are offered to the one side that plug (2) are close to recess (3);

the utility model discloses a pump body, including shrinkage pool (3) and pump body, plug (2), annular ring (9) that can be used to connect are all offered in one side that plug (2) is close to shrinkage pool (3) and pump body (1) periphery are located shrinkage pool (3) periphery one side department, plug (2) is close to shrinkage pool (3) one side and is located shrinkage pool (3) periphery one side department uniform body have with annular ring (10) of pegging graft mutually.

2. The sealing structure of the submersible electric pump according to claim 1, wherein a rubber pad (13) for leakage prevention is adhered to one surface of the plug (2) close to the concave hole (3).

3. A submersible electric pump seal according to claim 1, characterized in that a side wall surface of the outer periphery of the threaded tube (8) is fitted with a male rod (12) for rotation.

4. The sealing structure of the submersible electric pump according to claim 1, wherein a rubber ring (11) for leakage prevention is adhered to the inner bottom end surface of the annular ring (9).

5. A submersible electric pump seal according to claim 1, characterized in that the screw groove (6) is located inside the annular ring (9).