Quick wiring device for oil-submerged pump

Abstract

The invention relates to the technical field of downhole tools, in particular to an oil-submerged pump rapid wiring device which comprises a wiring pipe, an electronic bin sealing shell, a sealing screw cap, a sealing gland, a wiring socket, a throwing-fishing socket leading-in main line and a small flat cable leading-out line. At least one left-right through wiring groove is formed in the outer side of the wiring pipe located on the outer side of the eccentric overflowing hole at intervals along the circumference, an electronic bin groove is formed in the outer side of the wiring pipe corresponding to the middle position of the wiring groove, and an electronic bin sealing shell is fixedly installed in the electronic bin groove. The device is reasonable and compact in structure and convenient to use, and by arranging the connector socket, a drop-and-pull socket leading-in main line and a small flat cable leading-out line are rapidly connected into the electronic bin sealing shell; the three lead-out holes are arranged on the sealing gland, so that each small flat cable lead-out wire is independently led out of the electronic cabin sealing shell, mutual winding is avoided, and the small flat cable lead-out device has the characteristics of stability, reliability and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of downhole tool technology and is a quick-connection device for submersible pumps. Background Technology

[0002] Due to its advantages in deep pumping, prevention of rod and tubing wear, high degree of automation, reduced surface maintenance workload, high system efficiency, and low energy consumption, the rodless pump is an irreplaceable lifting method for deep pumping during the current and future periods of low submersion. Therefore, improving the supporting technology for rodless pumps is a key task at present. Currently, rodless pumps mainly adopt the drop-and-retrieve cable type electric submersible pump technology. The in-well structure, from top to bottom, consists of tubing, drop-and-retrieve socket, submersible pump, and submersible generator unit. The power cable needs to pass over the submersible pump before connecting to the submersible generator unit. The wiring process is manual on-site wiring, which is affected by factors such as personnel skill level, ambient temperature, air humidity, and construction, resulting in inconsistent wiring quality. The pump inspection rate due to wiring quality accounts for 20% of the overall pump inspection rate of rodless pumps, which is an important factor restricting the pump inspection cycle of rodless pumps. Therefore, it is necessary to invent a quick wiring device for submersible pumps to solve the above problems. Summary of the Invention

[0003] This invention provides a quick wiring device for submersible pumps, which overcomes the shortcomings of the prior art and can effectively solve the problems of slow wiring and poor wiring quality of existing submersible pumps.

[0004] The technical solution of this invention is achieved through the following measures: A quick-connect device for a submersible pump includes a connecting pipe, an electronic compartment sealing shell, a sealing screw cap, a sealing gland, a connecting socket, a retrieval socket for introducing the main line, and a small flat cable lead-out line. The connecting pipe is provided with an eccentric flow hole that runs through the left and right sides. At least one wire routing groove that runs through the left and right sides is provided circumferentially on the outside of the connecting pipe located outside the eccentric flow hole. An electronic compartment groove is provided on the outside of the connecting pipe corresponding to the middle position of the wire routing groove. An electronic compartment sealing shell is fixedly installed in the electronic compartment groove. A connecting socket is provided in the electronic compartment sealing shell. A sealing screw cap with its left end located to the left is fixedly installed on the left side of the electronic compartment sealing shell. A sealing gland with its right end located to the right is fixedly installed on the right side of the electronic compartment sealing shell. A retrieval socket for introducing the main line is provided in the sealing screw cap, the right end of which can be inserted and fixed together with the connecting socket. The sealing gland is provided with three lead-out holes that run through the left and right sides. Each lead-out hole is provided with a small flat cable lead-out line whose left end is connected to the connecting socket.

[0005] The following are further optimizations and / or improvements to the above-mentioned technical solution: The aforementioned electronic compartment sealing shell may include a sealing compartment cover, a left sealing plate, and a right sealing plate. The sealing compartment cover is an arc-shaped plate, with the left sealing plate fixedly installed on the inner side of the left end of the sealing compartment cover, and the right sealing plate fixedly installed on the inner side of the right end of the sealing compartment cover.

[0006] The above may also include a first O-ring seal, a left mounting hole on the left side of the left sealing plate, a sealing screw cap fixedly installed on the inner side of the left end of the left mounting hole, and at least one first O-ring seal is provided in the left mounting hole corresponding to the right position of the sealing screw cap from left to right.

[0007] The above may also include a second O-ring, a third O-ring, and a gasket. The right sealing plate has a right mounting hole on its right side. A sealing cap is fixedly installed on the inner side of the right end of the right mounting hole. At least one second O-ring is provided between the outer side of the sealing cap and the right sealing plate from left to right. At least one third O-ring is provided between the outer side of each small flat cable lead and the sealing cap from left to right. A gasket is provided in the right mounting hole corresponding to the left side of the sealing cap.

[0008] The aforementioned electronic compartment sealing shell may also include a grease injection nozzle, and the sealing compartment cover is provided with at least one grease injection hole, in which a grease injection nozzle is fixedly installed.

[0009] The aforementioned electronic compartment sealing shell may also include fixing bolts, and the sealing compartment cover and the wiring pipe are fixed together by several fixing bolts.

[0010] This invention features a reasonable and compact structure, and is easy to use. By setting an eccentric overcurrent hole and a cable tray, overcurrent and cable routing are separated. By setting a wiring socket, the main line introduced into the retrieval socket and the lead wire of the small flat cable can be quickly connected to the electronic compartment sealed shell. By setting three lead holes on the sealing cover, each lead wire of the small flat cable can be led out of the electronic compartment sealed shell independently, avoiding entanglement between them. It has the characteristics of stability, reliability and high efficiency. Attached Figure Description

[0011] Appendix Figure 1 These are schematic diagrams of partial cross-sectional views of embodiments 1 to 6 of the present invention.

[0012] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of the three-dimensional structure.

[0013] The codes in the attached diagram are as follows: 1 is the wiring conduit, 2 is the sealing screw cap, 3 is the sealing gland, 4 is the electronic compartment, 5 is the main line leading into the retrieval socket, 6 is the small flat cable lead-out wire, 7 is the eccentric flow hole, 8 is the cable tray, 9 is the sealing compartment cover, 10 is the left sealing plate, 11 is the first O-ring seal, 12 is the second O-ring seal, 13 is the third O-ring seal, 14 is the sealing gasket, and 15 is the grease injection nozzle. Detailed Implementation

[0014] The present invention is not limited to the following embodiments, and specific implementation methods can be determined according to the technical solutions and actual conditions of the present invention.

[0015] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0016] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1 , 2 As shown, the submersible pump quick-connect device includes a connecting pipe 1, an electronic compartment sealing shell, a sealing screw cap 2, a sealing gland 3, a connecting socket, a main line 5 for the retrieval socket, and a small flat cable lead-out wire 6. The connecting pipe 1 has an eccentric flow hole 7 that runs through the left and right sides. At least one cable tray 8 that runs through the left and right sides is provided on the outer side of the connecting pipe 1 outside the eccentric flow hole 7 along the circumference. An electronic compartment groove 4 is provided on the outer side of the connecting pipe 1 corresponding to the middle position of the cable tray 8. An electronic compartment sealing shell is fixedly installed in the electronic compartment groove 4. A connecting socket is provided in the electronic compartment sealing shell. A sealing screw cap 2 with its left end located to the left is fixedly installed on the left side of the electronic compartment sealing shell. A sealing gland 3 with its right end located to the right is fixedly installed on the right side of the electronic compartment sealing shell. The sealing screw cap 2 has a main line 5 for the retrieval socket that can be inserted and fixed together with the connecting socket on the right side. The sealing gland 3 has three lead-out holes that run through the left and right sides. Each lead-out hole has a small flat cable lead-out wire 6 with its left end connected to the connecting socket. During use, first, fix the left and right ends of the connecting pipe 1 to the retrieval socket and the submersible pump respectively. Then, insert the right end of the retrieval cable lead into the sealing cap 2 and quickly connect it to the connecting socket. Next, quickly connect the right end of the small flat cable lead 6 to the submersible unit. After the two cables are connected, perform a cable continuity test. Only after the test is passed can the cable be put into the well. By setting an eccentric flow hole 7 and a cable groove 8, the flow and cable passage are separated. By setting a connecting socket, the main line 5 introduced into the retrieval socket and the small flat cable lead 6 are quickly connected to the electronic compartment sealing shell. By setting three lead holes on the sealing cap 3, each small flat cable lead 6 is led out of the electronic compartment sealing shell independently to avoid tangling between them.

[0017] This invention enables rapid connection between the rodless pump power cable and the submersible generator unit. The wiring conduit 1 is mainly composed of a sealed oil pipe with a built-in eccentric flow hole 7. An electronic compartment 4 is set on the outer wall of the wiring conduit 1 and an electronic compartment sealing shell is installed to serve as a cable connection sealing box. The inside of the electronic compartment sealing shell is sealed by sealing screw cap 2 and sealing pressure cap 3. Both ends of the wiring conduit 1 are connected by threads. The upper end is connected to the docking socket connector (or oil pipe), and the lower end is connected to the submersible electric pump outlet through a special short section. The threaded connection on site can greatly save operation time and has the characteristics of stability, reliability and high efficiency, effectively solving the problems of slow wiring and poor wiring quality of existing submersible pumps.

[0018] The above-mentioned quick-connect device for submersible pumps can be further optimized and / or improved according to actual needs: Example 2: As shown in the attached document Figure 1 , 2 As shown, the electronic compartment sealing shell includes a sealing cover 9, a left sealing plate 10, and a right sealing plate. The sealing cover 9 is an arc-shaped plate. The left sealing plate 10 is fixedly installed on the inner side of the left end of the sealing cover 9, and the right sealing plate is fixedly installed on the inner side of the right end of the sealing cover 9. During use, this design ensures the airtightness of the electronic compartment 4 after the electronic compartment sealing shell is installed.

[0019] Example 3: As shown in the attached document Figure 1 , 2 As shown, it also includes a first O-ring seal 11. A left mounting hole is provided on the left side of the left sealing plate 10. A sealing cap 2 is fixedly installed on the inner side of the left end of the left mounting hole. At least one first O-ring seal 11 is sequentially provided from left to right in the left mounting hole corresponding to the position to the right of the sealing cap 2. During use, this arrangement ensures the sealing between the left sealing plate 10 and the main line 5 leading to the retrieval socket, while also ensuring the sealing within the electronic compartment 4.

[0020] Example 4: As shown in the appendix Figure 1 , 2 As shown, it also includes a second O-ring seal 12, a third O-ring seal 13, and a sealing gasket 14. A right mounting hole is provided on the right side of the right sealing plate. A sealing cap 3 is fixedly installed on the inner side of the right end of the right mounting hole. At least one second O-ring seal 12 is sequentially arranged between the outer side of the sealing cap 3 and the right sealing plate from left to right. At least one third O-ring seal 13 is sequentially arranged between the outer side of each small flat cable lead-out wire 6 and the sealing cap 3 from left to right. A sealing gasket 14 is provided in the right mounting hole corresponding to the left side position of the sealing cap 3. During use, this arrangement ensures the sealing between the right sealing plate and the sealing cap 3, and between the sealing cap 3 and the small flat cable lead-out wire 6, while also ensuring the sealing within the electronic compartment 4.

[0021] Example 5: As shown in the attached document Figure 1 , 2As shown, the electronic compartment sealing shell also includes a grease injection nozzle 15. The sealing compartment cover 9 is provided with at least one grease injection hole, and the grease injection nozzle 15 is fixedly installed in the grease injection hole. During use, by prefabricating this embodiment, the manual wiring work of the rodless pump on-site is transferred to the factory. In the factory, the wiring socket and the small flat cable lead-out line 6 are connected by a standardized assembly line pressing method and built into the electronic compartment 4. Then, high-pressure resistant sealing grease is injected into the grease nipple 15. Its design pressure resistance can reach 70MPa, ensuring that the insulation performance is not affected by the high pressure environment at the bottom of the well. It eliminates faults such as insulation breakdown, insulation failure, and no insulation caused by poor wiring quality at the connection between the main line 5 of the docking socket and the small flat cable lead-out line 6. After leaving the factory, it can be quickly connected to the submersible unit and docking socket (or tubing) at the well site through threaded connection. It can also be quickly plugged into the submersible unit cable socket through the small flat cable lead-out line 6. It is not affected by factors such as rain and snow, ambient temperature, and uneven skill levels of personnel. Compared with the existing manual wiring method, it effectively saves a lot of time in on-site wiring operations.

[0022] Example 6: As shown in the appendix Figure 1 , 2 As shown, the electronic compartment sealing shell also includes fixing bolts, and the sealing compartment cover 9 and the wiring pipe 1 are fixed together by several fixing bolts. This design facilitates disassembly, assembly, fixing, and sealing during use.

[0023] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A quick-connection device for a submersible pump, characterized in that... The system includes a conduit, an electronic compartment sealing shell, a sealing screw cap, a sealing gland, a wiring socket, a retrieval socket for introducing the main line, and a small flat cable outlet. The conduit has an eccentric flow hole that runs through both sides. On the outer side of the conduit outside the eccentric flow hole, there is at least one circumferentially through-channel cable tray. On the outer side of the conduit corresponding to the middle of the cable tray, there is an electronic compartment slot. An electronic compartment sealing shell is fixedly installed inside the electronic compartment slot. A wiring socket is installed inside the electronic compartment sealing shell. A sealing screw cap with its left end located to the left of the electronic compartment sealing shell is fixedly installed on the left side of the electronic compartment sealing shell. A sealing gland with its right end located to the right of the electronic compartment sealing shell is fixedly installed on the right side of the electronic compartment sealing shell. The sealing screw cap has a retrieval socket for introducing the main line, which can be inserted and fixed together with the wiring socket on the right. The sealing gland has three through-channel outlet holes, and each outlet hole has a small flat cable outlet wire with its left end connected to the wiring socket.

2. The quick-connect device for a submersible pump according to claim 1, characterized in that... The electronic compartment sealing shell includes a sealing cover, a left sealing plate, and a right sealing plate. The sealing cover is an arc-shaped plate. The left sealing plate is fixedly installed on the inner side of the left end of the sealing cover, and the right sealing plate is fixedly installed on the inner side of the right end of the sealing cover.

3. The quick-connect device for a submersible pump according to claim 2, characterized in that... It also includes a first O-ring seal. The left side of the left sealing plate is provided with a left mounting hole. A sealing screw cap is fixedly installed on the inner side of the left end of the left mounting hole. At least one first O-ring seal is provided in the left mounting hole from left to right, corresponding to the position to the right of the sealing screw cap.

4. The quick-connect device for a submersible pump according to claim 2 or 3, characterized in that... It also includes a second O-ring, a third O-ring, and a gasket. The right sealing plate has a right mounting hole on its right side. A sealing cap is fixedly installed on the inner side of the right end of the right mounting hole. At least one second O-ring is provided between the outer side of the sealing cap and the right sealing plate from left to right. At least one third O-ring is provided between the outer side of each small flat cable lead and the sealing cap from left to right. A gasket is provided in the right mounting hole corresponding to the left side of the sealing cap.

5. The quick-connect device for a submersible pump according to claim 2 or 3, characterized in that... The electronic compartment sealing shell also includes a grease injection nozzle. The sealing compartment cover has at least one grease injection hole, and a grease injection nozzle is fixedly installed in the grease injection hole.

6. The quick-connect device for a submersible pump according to claim 4, characterized in that... The electronic compartment sealing shell also includes a grease injection nozzle. The sealing compartment cover has at least one grease injection hole, and a grease injection nozzle is fixedly installed in the grease injection hole.

7. The quick-connect device for a submersible pump according to claim 2, 3, or 6, characterized in that... The electronic compartment sealing shell also includes fixing bolts, and the sealing compartment cover and the wiring pipe are fixed together by several fixing bolts.

8. The quick-connect device for a submersible pump according to claim 4, characterized in that... The electronic compartment sealing shell also includes fixing bolts, and the sealing compartment cover and the wiring pipe are fixed together by several fixing bolts.

9. The quick-connect device for a submersible pump according to claim 5, characterized in that... The electronic compartment sealing shell also includes fixing bolts, and the sealing compartment cover and the wiring pipe are fixed together by several fixing bolts.

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