Wellhead rapid assembly cable penetrating device

Abstract

The utility model relates to the technical field of cable penetrating devices, and discloses a wellhead rapid assembly cable penetrating device which is used for connecting a three-phase cable and a ground cable and comprises a penetrating device body connected with the three-phase cable and an upper plug connected with the ground cable. The traversing device main body comprises a first cable contact pin connected with a three-phase cable, an electrode ring communicated with the first cable contact pin and a conductive cylinder; the upper plug comprises a second cable contact pin connected with a ground cable, and the second cable contact pin protrudes out of the surface of the upper plug. The beneficial effects of the utility model are that: the utility model provides the well mouth rapid assembly cable crossing device, the crossing device main body is connected with a three-phase cable, the upper plug is connected with a ground cable, and the upper plug and the crossing device main body are assembled in a plugging way, so that the cable crossing device can be rapidly assembled, and the assembly process is rapid and convenient. Meanwhile, the product diameter and size are small, the product adaptability is high, the sealing performance is high, and the oil well pump can be specially used for underground oil exploitation.

Description

Technical Field

[0001] The utility model relates to the technical field of cable penetrators, and particularly relates to a cable penetrator for rapid assembly at the wellhead. Background Art

[0002] The electric pump wellhead device is a very common artificial lift oil production equipment. When there is not enough pressure at the bottom of the well to push the crude oil to form a natural flow, an electric submersible pump needs to be put into the oil layer for operation. The electric energy of the electric submersible pump is usually supplied through a cable. When connecting the cable, it needs to pass through the electric pump wellhead device, and the cable penetrator must be used to pass through the wellhead device to ensure the pressure resistance and sealing performance of the cable during the passing process.

[0003] A cable penetrator is a device used to penetrate the tubing hanger and the upper flange at the wellhead of an electric submersible pump oil production well and connect the downhole electric submersible pump and the onshore power supply. In the prior art, three-phase cables need to be connected to the surface cable through a cable penetrator at the wellhead. Usually, the three-phase cables are connected to the cable penetrator body, the upper plug is connected to the surface cable, and then the connection between the cable penetrator body and the upper plug is used to realize the connection between the three-phase cables and the surface cable. However, in the prior art, the connection between the cable penetrator body and the upper plug is time-consuming and laborious, and rapid connection cannot be achieved. Summary of the Utility Model

[0004] To overcome the disadvantages that the connection between the cable penetrator body and the upper plug in the prior art is time-consuming and laborious and rapid connection cannot be achieved, the utility model provides a cable penetrator for rapid assembly at the wellhead, and its detailed technical solution is as follows:

[0005] A cable penetrator for rapid assembly at the wellhead is used for connecting three-phase cables and surface cables, and includes a penetrator body connected to the three-phase cables and an upper plug connected to the surface cables; the penetrator body includes a first cable pin connected to the three-phase cables, an electrode ring and a conductive cylinder communicated with the first cable pin; the upper plug includes a second cable pin connected to the surface cable, and the second cable pin protrudes from the surface of the upper plug; the second cable pin can be inserted into the electrode ring of the penetrator body and connected to the first cable pin through the electrode ring and the conductive cylinder.

[0006] Further, the penetrator body is of a cylindrical structure and includes a shell in the shape of a hollow cylinder, a first cable pin located inside the shell, a conductive cylinder located inside the shell and connected to the first cable pin, and an electrode ring located inside the shell and connected to the conductive cylinder.

[0007] Further, the penetrator body further includes a fixing sleeve threadedly connected to the inner side surface of one end of the shell, a sheath fixed inside the fixing sleeve, and an insulating connection cylinder threadedly connected to the inner side surface of the other end of the shell.

[0008] Further, one end of the fixing sleeve is provided with external threads, and the other end is provided with a through hole for inserting a three-phase cable.

[0009] Further, the insulating connection cylinder is located inside the housing and sleeved outside the electrode ring and the conductive cylinder.

[0010] Further, the penetrator body further includes a plurality of "O" - shaped sealing rings provided on the outer surface of the first cable pin and the inner surface of the insulating connection cylinder.

[0011] Further, the outer surface of one end of the housing away from the fixing sleeve is recessed inward to form a connecting portion for connecting the upper plug.

[0012] Further, the upper plug includes a connecting screw cap, a connecting pipe, a joint, and a ferrule fitting, all of which are hollow cylindrical structures and are sequentially connected in order.

[0013] Further, the connecting screw cap is adhesively fixed to one end of the connecting pipe, the other end of the connecting pipe is thread - connected to one end of the joint, and the other end of the joint is thread - connected to the ferrule fitting.

[0014] Further, the second cable pin is located inside the connecting pipe and one end protrudes from the connecting screw cap; a rubber layer and an epoxy resin layer are filled between the connecting pipe and the second cable pin.

[0015] The beneficial effects of the present utility model are as follows: The present utility model provides a wellhead fast - assembling cable penetrator. The penetrator body is connected to the three - phase cable, and the upper plug is connected to the ground cable. Through the plug - and - unplug assembly of the upper plug and the penetrator body, the fast assembly of the cable penetrator is realized, and the assembly process is fast and convenient. At the same time, the diameter and volume of the product of the present utility model are small, the product has strong adaptability, has high sealing performance, and can be specifically used for downhole oil exploitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic connection diagram of the present utility model and the cable.

[0017] Figure 2 is a schematic structural diagram of the present utility model.

[0018] Figure 3 is a sectional view of the penetrator body of the present utility model.

[0019] Figure 4 is an exploded view of the penetrator body of the present utility model.

[0020] Figure 5 is a sectional view of the upper plug of the present utility model.

[0021] Figure 6 This is an exploded view of the upper plug of the present utility model.

[0022] Among them:

[0023] 100 - penetrator body; 200 - upper plug; 300 - three-phase cable; 400 - ground cable;

[0024] 110 - first cable pin; 120 - electrode ring; 130 - conductive cylinder; 140 - insertion interface;

[0025] 150 - cable connection port; 160 - housing; 170 - fixing sleeve; 180 - sheath;

[0026] 111 - "O" - shaped sealing ring; 161 - connecting part;

[0027] 210 - second cable pin; 220 - connecting screw cap; 230 - connecting pipe; 240 - joint;

[0028] 250 - ferrule - type pipe joint; 231 - rubber layer; 232 - epoxy resin layer. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0030] A wellhead rapid - assembly cable penetrator, as Figure 1 and Figure 2 shown, includes a penetrator body 100 connected to the three - phase cable 300 and an upper plug 200 connected to the ground cable 400. The single - phase cable is inserted into the penetrator body 100 and connected to the first cable pin 110. The ground cable is inserted into the upper plug 200 and connected to one end of the second cable pin 210. The other end of the second cable pin 210 protrudes from the upper plug 200. The second cable pin 210 can be inserted into the penetrator body 100 and connected to the first cable pin 110 through the electrode ring 120 and the conductive cylinder 130, thereby realizing the connection between the three - phase cable 300 and the ground cable 400.

[0031] The structure of the penetrator body 100 is as Figure 3 and Figure 4As shown in the figure, it is a hollow cylinder structure, including a housing 160, a first cable pin 110 located inside the housing 160, a conductive cylinder 130 connected to the first cable pin 110, and an electrode ring 120 connected to the conductive cylinder 130. The penetrator body 100 further includes a fixing sleeve 170 threadedly connected to the inner side surface of one end of the housing 160, a sheath 180 fixed inside the fixing sleeve 170, and an insulating connection cylinder 160 threadedly connected to the inner side surface of the other end of the housing 160. One end of the fixing sleeve 170 has an external thread, and the other end is provided with a through hole for forming a cable connection port 150 into which a three-phase cable 300 is inserted. The sheath 180 is located between the three-phase cable 300 and the fixing sleeve 170 for protecting the three-phase cable 300. The insulating connection cylinder 160 is sleeved outside the electrode ring 120 and the conductive cylinder 130 for sealing and insulation, and an insertion port 140 for connecting the upper plug 200 is formed on the inner surface. To enhance the sealing and insulation performance of the penetrator body 100, a plurality of "O" - shaped sealing rings 111 are provided on the outer surface of the first cable pin 110 and the inner surface of the insulating connection cylinder 160. The three-phase cable 300 is inserted into the cable connection port 150 and connected to the first cable pin 110, and the upper plug 200 is inserted into the insertion port 140 and connected to the electrode ring 120. The outer surface of one end of the housing 160 away from the fixing sleeve 170 is recessed inward to form a connection portion 161 with a smaller outer diameter.

[0032] The structure of the upper plug 200 is as Figure 5 and Figure 6 shown, including a connection screw cap 220, a connection pipe 230, a joint 240, and a ferrule - type pipe joint 250, all of which are hollow cylindrical structures and are sequentially connected. The connection screw cap 220 is adhesively fixed to one end of the connection pipe 230. The other end of the connection pipe 230 is threadedly connected to one end of the joint 240, and the other end of the joint 240 is threadedly connected to the ferrule - type pipe joint 250. The upper plug 200 further includes a second cable pin 210 located inside the connection pipe 230, and one end of the second cable pin 210 protrudes from the inside of the connection screw cap 220. To enhance the insulation and sealing performance of the upper plug, "O" - shaped sealing rings 111 are provided on both the inner surface and the outer surface of the connection pipe 230. At the same time, the connection pipe 230 and the second cable pin 210 are filled with a rubber layer 231 and an epoxy resin layer 232. The connection screw cap 220 is used to be sleeved on the connection portion 161 of the housing 160 so that the outer surface of the connection screw cap 220 is flush with the outer surface of the housing 160. The connection pipe 230 is used to fix and protect the second cable pin 210. The joint 240 is used for connecting the ground cable to the second cable pin 210, and the ferrule - type pipe joint 250 is used to fix the ground cable.

[0033] When the utility model is in use, first connect the single-phase cable in the three-phase cable 300 to the penetrator main body 100, connect the ground cable 400 to the plug 200, and then insert the second cable pin 210 of the upper plug 200 into the plug interface 140, so that the second cable pin 210 is connected to the electrode ring 120. At the same time, the connecting screw cap 220 will be sleeved on the connecting part 161 of the housing 160 and make the connecting screw cap 220 flush with the outer wall of the housing 160, so as to realize the rapid assembly of the cable penetrator.

[0034] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-assembly cable penetrator for wellhead, used for connecting three-phase cables and ground cables, characterized in that, It includes a penetrator body connected to a three-phase cable and an upper plug connected to a ground cable; the penetrator body includes a first cable pin connected to the three-phase cable, an electrode ring and a conductive cylinder communicated with the first cable pin; the upper plug includes a second cable pin connected to the ground cable, and the second cable pin protrudes from the surface of the upper plug; the second cable pin can be inserted into the electrode ring of the penetrator body and connected to the first cable pin through the electrode ring and the conductive cylinder.

2. The quick-assembly cable penetrator for wellhead according to claim 1, characterized in that, The penetrator body is of a cylindrical structure, including a hollow cylindrical shell, a first cable pin located inside the shell, a conductive cylinder located inside the shell and connected to the first cable pin, and an electrode ring located inside the shell and connected to the conductive cylinder.

3. The quick-assembly cable penetrator for wellhead according to claim 2, wherein The penetrator body further includes a fixing sleeve threadedly connected to the inner side surface of one end of the shell, a sheath fixed in the fixing sleeve, and an insulating connection cylinder threadedly connected to the inner side surface of the other end of the shell.

4. The quick-assembly cable penetrator for wellhead according to claim 3, wherein One end of the fixing sleeve has an external thread, and the other end is provided with a through hole for inserting the three-phase cable.

5. The quick-assembly cable penetrator for wellhead according to claim 3, characterized in that, The insulating connection cylinder is located inside the shell and sleeved outside the electrode ring and the conductive cylinder.

6. The quick-assembly cable penetrator for wellhead according to claim 3, characterized in that, The penetrator body further includes a plurality of "O" - shaped sealing rings arranged on the outer surface of the first cable pin and the inner surface of the insulating connection cylinder.

7. The quick-assembly cable penetrator for wellhead according to claim 3, wherein The outer surface of the end of the shell away from the fixing sleeve is recessed inward to form a connection part for connecting the upper plug.

8. The quick-assembly cable penetrator for wellhead according to claim 3, characterized in that, The upper plug includes a connection screw cap, a connection pipe, a joint, and a ferrule - type pipe joint that are all of a hollow cylindrical structure and are sequentially connected in order.

9. The wellhead rapid assembly cable penetrator according to claim 8, characterized in that, The connection screw cap is adhesively fixed to one end of the connection pipe, the other end of the connection pipe is threadedly connected to one end of the joint, and the other end of the joint is threadedly connected to the ferrule - type pipe joint.

10. The quick-assembly cable penetrator for wellhead according to claim 9, wherein, The second cable pin is located inside the connection pipe and one end protrudes from the connection screw cap; a rubber layer and an epoxy resin layer are filled between the connection pipe and the second cable pin.

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