CN113067192B

CN113067192B - Cable quick connector for submersible electric plunger pump

Info

Publication number: CN113067192B
Application number: CN202110310994.7A
Authority: CN
Inventors: 冯斗; 冯丹; 张德江; 管浩宇
Original assignee: Shenyang Xincheng Petroleum Machinery Manufacturing Co ltd
Current assignee: Shenyang Xincheng Petroleum Machinery Manufacturing Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2022-10-11
Anticipated expiration: 2041-03-23
Also published as: CN113067192A

Abstract

The invention discloses a cable quick connector of an oil-submersible electric plunger pump, which comprises a male connector, a female connector and a connecting assembly, wherein the female connector comprises a first cable and a socket connected to the tail end of the first cable, the male connector comprises a second cable and a plug connected to the tail end of the second cable, the plug is in plug-in fit with the socket, and the connecting assembly comprises a sealing barrel, a steel outer barrel, a sealing bolt and a pressing piece. The sealing bolt comprises a first bolt and a second bolt, the sealing barrel can provide good sealing, and the steel outer barrel can be supported rigidly, so that the cable connectors are connected more stably. The protection component arranged on the steel outer cylinder can protect the steel outer cylinder and improve rigidity, and can inject crude oil on the steel outer cylinder to keep the internal and external pressure of the sealing cylinder and scrub the structure when the joint is separated.

Description

Cable quick connector for submersible electric plunger pump

Technical Field

The invention relates to the field of cable connectors, in particular to a cable quick connector for an oil-submersible electric plunger pump.

Background

An electric submersible plunger pump is an oil pumping device that is installed in an oil well. In order to provide electric energy for the plunger pump to normally and continuously operate, a submersible cable is usually used for supplying power. The working environment of the submersible cable is also in an oil well with high temperature, high pressure and strong corrosiveness. In order to ensure the reliable operation of the plunger pump, a copper sleeve is pressed at the joint of the plunger pump, and the pressure sensitive adhesive tape is manually coated and insulated for connection. But such a connection is very much affected by the weather. The insulating material cannot be coated in windy and sandy weather, wet weather with more rainwater and cold weather with lower temperature, so that the construction progress is delayed due to greater environmental influence. The conventional quick joint for the submersible cable is easily limited by structure and space and cannot adapt to various use fields.

Disclosure of Invention

In order to overcome the defect of high insulation difficulty of the submersible cable in the prior art, the invention aims to solve the technical problem of providing the cable quick connector of the submersible electric plunger pump, which is simple, convenient and quick to connect, has stronger insulation property and improves the safety of the connection of the submersible cable.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a cable quick connector of an oil-submersible electric plunger pump, which comprises a male connector, a female connector and a connecting assembly, wherein the female connector comprises a first cable and a socket connected to the tail end of the first cable, the male connector comprises a second cable 21 and a plug connected with the tail end of the second cable, the plug is in splicing fit with the socket, the connecting assembly comprises a sealing barrel, a steel outer barrel, a sealing bolt and a pressing piece, the sealing barrel is sleeved outside the plug and the socket, and the steel outer barrel is sleeved outside the sealing barrel. The sealing bolt comprises a first bolt and a second bolt, the first bolt is in threaded connection with one end of the steel outer cylinder, the first bolt enables one pressing piece to abut against one end of the sealing cylinder, the second bolt is in threaded connection with the other end of the steel outer cylinder, and the second bolt enables the other pressing piece to abut against the other end of the sealing cylinder.

In a preferred technical scheme of the invention, the pressing piece comprises a pressing pad and a sealing pad, the pressing pad and the sealing pad are both in a cylindrical structure, the inner wall of the pressing pad is obliquely arranged, the outer wall of the sealing pad is obliquely arranged, the pressing pad is abutted against the first bolt or the second bolt, the pressing pad is sleeved outside the sealing pad, and the inner wall of the pressing pad is attached to the outer wall of the sealing pad.

In a preferred technical scheme of the invention, two ends of the sealing cylinder are respectively provided with a contraction part, the contraction parts are attached to the first cable or the second cable, the sealing gasket is sleeved outside the contraction parts, and the sealing gasket is tightly matched with the contraction parts.

In a preferred technical scheme of the invention, the cable quick connector of the submersible electric plunger pump further comprises a protection component, and the protection component comprises a first baffle, a second baffle and a threaded cylinder. Outside first bolt was located to first baffle cover, outside the second bolt was located to the second baffle cover, screw thread section of thick bamboo threaded connection was in the outer wall of first baffle, was provided with the valve on the first baffle, and the one end that the second baffle is close to first baffle has seted up sealed ring groove, and the inner wall in sealed ring groove is provided with the screw thread with screw thread section of thick bamboo screw-thread fit, and screw thread section of thick bamboo inner wall is fixed with the rubber ring, and the steel urceolus outer wall is located to the rubber ring cover, and rubber ring and steel urceolus closely cooperate. More than two through holes communicated with the interior of the steel outer cylinder are formed in the steel outer cylinder.

In a preferred technical solution of the present invention, the protection component further includes a cleaning component, and the cleaning component includes more than two nozzles and more than two brush heads. The shower nozzle is evenly fixed in more than two the screw thread section of thick bamboo inner wall, the brush head is evenly fixed in screw thread section of thick bamboo inner wall more than two, and brush head and shower nozzle interval set up, and shower nozzle and brush head all set up in one side that the rubber ring is close to the second baffle.

In a preferred technical scheme of the invention, a sealing rubber ring is arranged at the bottom of the sealing ring groove.

In a preferred technical scheme of the invention, the outer wall of the threaded cylinder is provided with a positioning ring, the periphery of the second baffle is uniformly hinged with a plurality of positioning buckles, and the positioning buckles are buckled on the positioning ring through rotation.

In a preferred technical scheme of the invention, the inner wall of the threaded cylinder is provided with a pressure gauge and a limiting rod, and the limiting rod is positioned above the pressure gauge.

The beneficial effects of the invention are as follows:

the invention provides a cable quick connector of an oil-submersible electric plunger pump, which is characterized in that a male connector led out from a cable is connected with a female connector, a sealing cylinder is used for coating the outside of the connector, insulating oil is filled in the sealing cylinder for sealing and insulating, a steel outer cylinder is sleeved outside the sealing cylinder, and sealing bolts are adopted at two ends of the steel outer cylinder to tightly push the sealing cylinder. The sealing barrel can provide good sealing, and the steel outer barrel can be supported rigidly, so that the cable connector is connected more stably. The protection component arranged on the steel outer cylinder can protect the steel outer cylinder and improve rigidity, and can inject crude oil on the steel outer cylinder to keep the internal and external pressure of the sealing cylinder and scrub the structure when the joint is separated.

Drawings

Fig. 1 is a schematic structural diagram of a cable quick connector of an electric submersible plunger pump according to an embodiment of the present invention;

fig. 2 is a schematic view of a state in which a protective member according to an embodiment of the present invention is sealed;

FIG. 3 is a schematic view of the protection member according to the present invention in an open state;

fig. 4 is a schematic bottom view of the threaded cartridge of fig. 2.

In the figure:

11-a first cable, 12-a socket, 21-a second cable, 22-a plug, 3-a sealing cylinder, 31-a contraction part, 4-a steel outer cylinder, 41-a through hole, 51-a first bolt, 52-a second bolt, 53-a pressure pad, 54-a sealing gasket, 61-a first baffle, 62-a second baffle, 621-a sealing ring groove, 622-a sealing rubber ring, 623-a positioning buckle, 63-a threaded cylinder, 631-a positioning ring, 64-a rubber ring, 65-a valve, 71-a nozzle, 72-a brush head, 73-a pressure gauge and 74-a limiting rod.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1, the embodiment provides a cable quick connector for a submersible electric plunger pump, which comprises a male connector, a female connector and a connecting component, wherein the female connector comprises a first cable 11 and a socket 12 connected to the tail end of the first cable 11, the male connector comprises a second cable 21 and a plug 22 connected to the tail end of the second cable 21, the first cable 11 and the second cable 21 are cables respectively led out from the submersible electric plunger pump and the submersible cable, then the socket 12 is electrically connected to the tail end of the first cable 11, and the plug 22 is electrically connected to the tail end of the second cable 21. In other embodiments, the plug 22 and the socket 12 may be reversed according to the actual requirement, and this does not affect the present solution. The plug 22 is first mated with the receptacle 12. Sealing and insulation is then achieved by the connection assembly outside the connection to the plug 22 and the receptacle 12.

The connecting assembly comprises a sealing barrel 3, a steel outer barrel 4, a sealing bolt and a pressing piece, wherein the sealing barrel 3 is sleeved outside the plug 22 and the socket 12, and the steel outer barrel 4 is sleeved outside the sealing barrel 3. The sealing bolt comprises a first bolt 51 and a second bolt 52, the first bolt 51 is connected with one end of the steel outer cylinder 4 in a threaded mode, one pressing piece is abutted to one end of the sealing cylinder 3 through the first bolt 51, the second bolt 52 is connected with the other end of the steel outer cylinder 4 in a threaded mode, and the other pressing piece is abutted to the other end of the sealing cylinder 3 through the second bolt 52.

The sealing cylinder 3 is sleeved outside the first cable 11 and the second cable 21, and the plug 22 and the socket 12 are wrapped inside the sealing cylinder 3. Then the steel outer cylinder 4 made of stainless steel is sleeved outside the sealing cylinder 3. At this time, firstly, the bolt at one end is tightened, in this embodiment, the first bolt 51 is tightened, the first bolt 51 presses the one end of the sealing cylinder 3 onto the cable through the pressing member, and the one end of the sealing cylinder 3 is in a sealed state. The other end of the sealing cylinder 3 is then filled with insulating oil or other insulating material. The sealing cylinder 3 is filled with insulating oil to insulate the socket 12 and the plug 22 from external devices. Then the second bolt 52 is also screwed, the second bolt 52 presses the other end of the sealing barrel 3 through the pressing piece, the sealing barrel 3 is in a sealing state, the insulating oil in the barrel provides insulating protection for the plug 22 and the socket 12, the bolts at the two ends are matched with the pressing piece, the sealing barrel 3 is in a sealing state, and the insulating material in the barrel is not easy to leak. And the outside steel protects a section of thick bamboo intensity higher, provides the protection to sealed section of thick bamboo 3, and is not fragile when receiving external collision striking in the use. In the embodiment, the sealing cylinder 3 is made of durable and oil-resistant fluororubber insulating material, and fluororubber has excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance, and the properties can support the use of the fluororubber in an oil well.

Specifically, the pressing member includes a pressing pad 53 and a sealing pad 54, both the pressing pad 53 and the sealing pad 54 are of a cylindrical structure, an inner wall of the pressing pad 53 is disposed obliquely, an outer wall of the sealing pad 54 is disposed obliquely, the pressing pad 53 abuts against the first bolt 51 or the second bolt 52, the pressing pad 53 is sleeved outside the sealing pad 54, and the inner wall of the pressing pad 53 is attached to the outer wall of the sealing pad 54. The bolt is screwed up along the rotation of steel urceolus 4, pushes away pressure pad 53 toward the direction of sealed cylinder 3, and the inclined plane of pressure pad 53 inner wall and the laminating of the outside inclined plane of sealed pad 54, and the inclined plane of pressure pad 53 pushes up sealed pad 54's inclined plane toward the direction of sealed cylinder 3, and then makes sealed pad 54 compress tightly on sealed cylinder 3, on the cable is fallen to sealed cylinder 3, makes sealed cylinder 3 keep sealed, and the insulating material of the intussuseption of sealed cylinder 3 is difficult for flowing.

Specifically, the two ends of the sealing cylinder 3 are both provided with the contracting portions 31, the contracting portions 31 are attached to the first cable 11 or the second cable 21, the sealing gasket 54 is sleeved outside the contracting portions 31, and the sealing gasket 54 is tightly matched with the contracting portions 31. The small-bore of constriction 31 makes things convenient for sealed between 3 and the cable of a sealing barrel, and sealing barrel 3 adopts rubber materials to make in this embodiment simultaneously, and constriction 31 has good elasticity, and when the cable extended to its inside, its ductility can strut the opening, and after the connection was accomplished, constriction 31 withdrawal pressed from both sides tight cable. The smaller diameter constriction 31 also allows the gasket 54 to more completely enclose it, sufficiently compressing it against the cable to maintain a seal.

Specifically, as shown in fig. 2 to 4, the cable quick connector for the submersible electric plunger pump further comprises a protection component, wherein the protection component comprises a first baffle 61, a second baffle 62 and a threaded barrel 63. Outside first bolt 51 was located to first baffle 61 cover, outside second bolt 52 was located to second baffle 62 cover, screw thread section of thick bamboo 63 threaded connection was in the outer wall of first baffle 61, be provided with valve 65 on the first baffle 61, sealed circular groove 621 has been seted up to the one end that second baffle 62 is close to first baffle 61, the inner wall of sealed circular groove 621 be provided with screw thread section of thick bamboo 63 screw-thread fit's screw thread, screw thread section of thick bamboo 63 inner wall is fixed with

rubber ring

64, 4 outer walls of steel urceolus are located to rubber ring 64 cover, and rubber ring 64 closely cooperates with steel urceolus 4. More than two through holes 41 communicating the interior of the steel outer cylinder 4 are formed on the steel outer cylinder.

After the sealing cylinder 3 and the steel outer cylinder 4 are connected, the cable connector can be put into use immediately. In order to provide better protection for the threaded cylinder 63, the threaded cylinder 63 is rotated along the first shutter 61, so that the threaded cylinder 63 moves in the direction of the second shutter 62. While moving, the valve 65 on the first shutter 61 is opened. Inside the threaded cylinder 63, the space between the rubber ring 64 and the first baffle 61 is gradually increased, and under the action of pressure, crude oil in the oil well flows into the threaded cylinder 63 through the valve 65 and flows into the steel outer cylinder 4 through the through hole 41. At the moment, oil pressure is arranged on both sides of the sealing cylinder 3, so that the internal and external pressure of the sealing cylinder 3 is balanced, and the sealing reliability is improved. The threaded cylinder 63 is screwed into the sealing circular groove 621 of the second baffle plate 62, the valve 65 is closed at the moment, the crude oil filled in the threaded cylinder 63 is not influenced by the oil well environment, stable oil pressure can be continuously provided for the sealing cylinder 3, and the threaded cylinder 63 is sleeved outside the steel outer cylinder 4 to provide a plurality of layers of support for the steel outer cylinder 4, so that the steel outer cylinder is prevented from being damaged.

When the joint needs to be separated, the valve 65 is firstly opened, then the threaded cylinder 63 is screwed out of the sealing ring groove 621, and the first baffle 61 is screwed in the direction, at this time, the distance between the rubber ring 64 and the first baffle 61 is gradually reduced, the crude oil in the threaded cylinder 63 is continuously extruded, and the influence of the crude oil can be reduced when the steel outer cylinder 4 and the sealing cylinder 3 are separated.

Specifically, the protection component further comprises a cleaning component, and the cleaning component comprises more than two spray heads 71 and more than two brush heads 72. More than two spray heads 71 are uniformly fixed on the inner wall of the threaded barrel 63, more than two brush heads 72 are uniformly fixed on the inner wall of the threaded barrel 63, the brush heads 72 and the spray heads 71 are arranged at intervals, and the spray heads 71 and the brush heads 72 are both arranged on one side of the rubber ring 64 close to the second baffle plate 62. Shower nozzle 71 is connected with outside high pressure water pump, and the disconnect coupling head is, and the rotatory unscrewing of screw thread section of thick bamboo 63, the scrubbing of the high-pressure water column cooperation brush head 72 that rotatory in-process shower nozzle 71 jetted, with the greasy dirt of adhesion on the steel urceolus 4 erode the sanitization, can also carry out preliminary washing to steel urceolus 4 inside through-hole 41 with the washing, improve the dry and clean degree of each part.

Specifically, the bottom of the sealing ring groove 621 is provided with a sealing rubber ring 622. When the threaded cylinder 63 is screwed into the bottom of the sealing ring groove 621, the end of the threaded cylinder 63 abuts against the sealing rubber ring 622, and the threaded cylinder 63 is tightly connected with the sealing rubber ring 622 to keep the interior of the threaded cylinder 63 sealed.

Specifically, the outer wall of the thread cylinder 63 is provided with a positioning ring 631, the periphery of the second baffle 62 is uniformly hinged with a plurality of positioning buckles 623, and the positioning buckles 623 are buckled on the positioning ring 631 through rotation. When the threaded cylinder 63 is connected to the bottom of the sealing ring groove 621, the positioning buckle 623 is buckled on the positioning ring 631 to lock the threaded cylinder 63, so that crude oil leakage caused by sliding out of the threaded cylinder 63 in the using process is prevented.

Specifically, the inner wall of the threaded cylinder 63 is provided with a pressure gauge 73 and a limit rod 74, and the limit rod 74 is located above the pressure gauge 73. The stop rod 74 is provided to prevent the threaded barrel 63 from rotating out and compressing the pressure gauge 73. The pressure gauge 73 in this embodiment adopts the oil pressure gauge 73, can detect the oil pressure in the screw thread section of thick bamboo 63, makes things convenient for managers in time to close valve 65, keeps the oil pressure of a sealed section of thick bamboo 3 both sides to be close.

Other techniques of the present embodiment employ existing techniques.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not intended to be limited to the specific embodiments disclosed herein, but other embodiments falling within the scope of the appended claims are intended to be within the scope of the present invention.

Claims

1. The utility model provides an oily electronic plunger pump cable high-speed joint head which characterized in that: the connecting device comprises a male connector, a female connector and a connecting assembly, wherein the female connector comprises a first cable (11) and a socket (12) connected to the tail end of the first cable (11), the male connector comprises a second cable (21) and a plug (22) connected to the tail end of the second cable (21), the plug (22) is in plug-in fit with the socket (12), the connecting assembly comprises a sealing cylinder (3), a steel outer cylinder (4), a sealing bolt and a pressing piece, the sealing cylinder (3) is sleeved outside the plug (22) and the socket (12), and the steel outer cylinder (4) is sleeved outside the sealing cylinder (3);

the sealing bolt comprises a first bolt (51) and a second bolt (52), the first bolt (51) is in threaded connection with one end of the steel outer cylinder (4), the first bolt (51) enables one pressing piece to abut against one end of the sealing cylinder (3), the second bolt (52) is in threaded connection with the other end of the steel outer cylinder (4), and the second bolt (52) enables the other pressing piece to abut against the other end of the sealing cylinder (3);

the protective device further comprises a protective component, wherein the protective component comprises a first baffle plate (61), a second baffle plate (62) and a threaded cylinder (63);

the first baffle (61) is sleeved outside the first bolt (51), the second baffle (62) is sleeved outside the second bolt (52), the threaded cylinder (63) is in threaded connection with the outer wall of the first baffle (61), a valve (65) is arranged on the first baffle (61), a sealing annular groove (621) is formed in one end, close to the first baffle (61), of the second baffle (62), threads matched with the threaded cylinder (63) are arranged on the inner wall of the sealing annular groove (621), a rubber ring (64) is fixed on the inner wall of the threaded cylinder (63), the rubber ring (64) is sleeved on the outer wall of the steel outer cylinder (4), and the rubber ring (64) is tightly matched with the steel outer cylinder (4);

more than two through holes (41) communicated with the interior of the steel outer cylinder (4) are formed in the steel outer cylinder;

the protection component also comprises a cleaning component, and the cleaning component comprises more than two spray heads (71) and more than two brush heads (72);

more than two shower nozzles (71) are evenly fixed in a screw thread section of thick bamboo (63) inner wall, and brush head (72) more than two are evenly fixed in a screw thread section of thick bamboo (63) inner wall, and brush head (72) and shower nozzle (71) interval set up, and shower nozzle (71) and brush head (72) all set up in one side that rubber ring (64) are close to second baffle (62).

2. The cable quick connector of the submersible electric plunger pump as claimed in claim 1, which is characterized in that:

the pressing piece comprises a pressing pad (53) and a sealing pad (54), the pressing pad (53) and the sealing pad (54) are both of a cylindrical structure, the inner wall of the pressing pad (53) is obliquely arranged, the outer wall of the sealing pad (54) is obliquely arranged, the pressing pad (53) is abutted against the first bolt (51) or the second bolt (52), the pressing pad (53) is sleeved outside the sealing pad (54), and the inner wall of the pressing pad (53) is attached to the outer wall of the sealing pad (54).

3. The cable quick connector of the submersible electric plunger pump according to claim 2, characterized in that:

both ends of sealed section of thick bamboo (3) all are provided with constriction part (31), constriction part (31) with first cable (11) or second cable (21) laminating, just outside sealed pad (54) cover was located constriction part (31), sealed pad (54) and constriction part (31) closely cooperate.

4. The cable quick connector of the submersible electric plunger pump as claimed in claim 1, which is characterized in that:

and a sealing rubber ring (622) is arranged at the bottom of the sealing ring groove (621).

5. The submersible electric plunger pump cable quick connector as claimed in claim 4, characterized in that:

holding ring (631) have been seted up to the outer wall of screw thread section of thick bamboo (63), the periphery of second baffle (62) evenly articulates there is a plurality of location to detain (623), and location is detained (623) and is detained through rotating the lock joint on holding ring (631).

6. The cable quick connector of the submersible electric plunger pump according to claim 5, characterized in that:

the inner wall of the threaded cylinder (63) is provided with a pressure gauge (73) and a limiting rod (74), and the limiting rod (74) is located above the pressure gauge (73).