An extended quick-repair intermediate joint

Abstract

The present invention discloses an extended quick-repair intermediate joint. It comprises an extended barrel, an auxiliary joint, an epoxy part and an integrated electrode, wherein the integrated electrode is placed in the extended barrel, the epoxy part is placed on both ends of the integrated electrode, the auxiliary joint is placed on both ends of the extended barrel, the epoxy part is placed between the auxiliary joint and the extended barrel, the epoxy part is provided with a through hole, the auxiliary joint is connected with the extended barrel through the through hole on the epoxy part to form a cavity, and liquid insulating oil is provided in the cavity. The beneficial effects of the present invention are: solving the problem that the cable body is not long enough after a cable joint fails, the intermediate joint can achieve the purpose of replacing two sets of traditional cable (repair) intermediate joints with one set of products, has good sealing effect, protects the cable joint from damage, is convenient to position and install, and the liquid insulating oil can be recycled and reused, thereby improving the installation reliability and convenience of the intermediate joint.

Description

Technical Field

[0001] The invention relates to the technical field related to cable emergency repair connection, in particular to an extended type quick emergency repair intermediate joint. Background Art

[0002] At present, the cable rate in various cities is getting higher and higher, and the corresponding cable intermediate joint failures are becoming more and more frequent. In addition, in order to pursue the neatness and beauty of cable trenches and cable tunnels, some cities often do not leave a margin for cable emergency repairs when designing and laying high-voltage cables. Therefore, when the cable intermediate joint fails, the cable will not be long enough, resulting in the inability to complete the emergency repair immediately, which will delay time. In addition, two sets of cable intermediate joints (or two sets of quick recovery intermediate joints) need to be made before recovery. Summary of the invention

[0003] The present invention aims to overcome the above-mentioned deficiencies in the prior art and provides an extended quick-repair intermediate joint capable of solving the problem that the cable body is not long enough.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An extended quick-repair intermediate joint comprises an extended barrel, an auxiliary joint, an epoxy part and an integrated electrode, wherein the integrated electrode is placed in the extended barrel, the epoxy part is placed on both ends of the integrated electrode, the auxiliary joint is placed on both ends of the extended barrel, the epoxy part is placed between the auxiliary joint and the extended barrel, the epoxy part is provided with a through hole, the auxiliary joint is connected with the extended barrel through the through hole on the epoxy part to form a cavity, and liquid insulating oil is arranged in the cavity.

[0006] When in use, the two cable connectors are respectively installed on the auxiliary connector, and then the two cable connectors are connected to the integrated electrode, and the integrated electrode is installed on the extended barrel through the epoxy part. The cavity formed by the auxiliary connector and the extended barrel is filled with liquid insulating oil to protect the integrated electrode while protecting the two cable connectors. The extended barrel and the integrated electrode can select a suitable length according to the gap between the two cable connectors, and the two cable connectors can be adjusted according to the extended barrel and the integrated electrode to make the connection just right. The above structural design solves the problem of the cable body being not long enough after the cable connector fails. The intermediate joint can achieve the purpose of replacing the traditional two sets of cable (emergency repair) intermediate joints with one set of products.

[0007] Preferably, the shape of the extended barrel is cylindrical, and both ends of the extended barrel are provided with a first flange, and the first flange is provided with a first annular groove, and the connecting end of the auxiliary joint and the extended barrel is provided with a second flange matching the first flange, and the second flange is provided with a second annular groove matching the first annular groove, and the epoxy part is placed in the area formed by the first annular groove and the second annular groove. The design of the first annular groove and the second annular groove can facilitate the installation and positioning of the epoxy part.

[0008] Preferably, a first annular groove is provided on the second flange and outside the second annular groove, and a first sealing ring is provided in the first annular groove. The design of the first annular groove and the first sealing ring ensures a sealed connection between the auxiliary connector and the extended barrel, and better protects the cable connector from damage.

[0009] Preferably, the auxiliary joint comprises an auxiliary barrel and an auxiliary cover plate, wherein the auxiliary barrel is cylindrical in shape, the auxiliary cover plate is mounted on one end face of the auxiliary barrel, the auxiliary barrel and the auxiliary cover plate are sealed and connected via a flange, a positioning tube is provided on the auxiliary cover plate, the positioning tube is placed in the middle of the auxiliary cover plate, the positioning tube is connected to the auxiliary cover plate, and a sealing layer is provided inside the positioning tube. Through the design of the positioning tube, on the one hand, the cable connector can be guided into the auxiliary connector, and at the same time, the design of the sealing layer can ensure a sealed connection between the cable connector and the positioning tube to prevent leakage of liquid insulating oil.

[0010] Preferably, a liquid injection port is provided on the upper side of the auxiliary cylinder body, a third flange is provided on the liquid injection port, a liquid injection cover plate matching the third flange is provided on the liquid injection port, a second annular groove is provided on the third flange, a second sealing ring is provided in the second annular groove, the liquid injection cover plate is sealed and connected to the third flange of the liquid injection port through the second sealing ring, a liquid outlet is provided on the lower side of the auxiliary cylinder body, and a control valve is provided on the liquid outlet. The sealing performance of the liquid injection port is ensured by the structural design on the liquid injection port; and the design of the control valve on the liquid outlet facilitates the recycling of liquid insulating oil and ensures the sealing performance in the cavity.

[0011] Preferably, the epoxy part is circular in shape, a positioning hole is provided in the middle of the epoxy part, and a limiting tube is provided on the left and right sides of the epoxy part and at the position where the positioning hole is located, the diameter of the limiting tube is consistent with the diameter of the positioning hole, the limiting tube and the epoxy part are integrally formed, the through hole is placed on the epoxy part and is located outside the limiting tube, and there are several through holes and they are evenly distributed on the epoxy part with the positioning hole as the center. The limiting tube is designed to locate the position of the integrated electrode, prevent the integrated electrode from relative displacement, and cause the cable connector to be unable to dock with the integrated electrode, thereby improving the installation reliability and convenience of the intermediate connector.

[0012] Preferably, the integrated electrode includes an electrode head and an electrode connector, the electrode head is installed at both ends of the electrode connector, the electrode head and the electrode connector are integrally formed, one end of the electrode head is connected to one end of the electrode connector, the other end of the electrode head is provided with a cable groove, a high-voltage electrode connector is provided in the cable groove, a cable head groove is provided on the high-voltage electrode connector, the electrode connector is placed in an extended barrel, and the electrode head is installed on the epoxy part. Through the design of the cable groove and the high-voltage electrode connector, the cable connector can be easily guided into the cable groove and matched with the high-voltage electrode connector, which greatly improves the positioning accuracy between the cable connector and the integrated electrode, thereby improving the installation efficiency of the intermediate connector.

[0013] Preferably, the cable groove comprises an opening section, a middle section and a bottom section, the opening section and the bottom section are cylindrical in shape, the middle section is truncated, the diameter of the opening section is larger than the diameter of the bottom section, the diameter of the middle section gradually decreases from close to the opening section to close to the bottom section, and the high-voltage electrode connector is installed in the bottom section of the cable groove. Through the shape design of the cable groove, the cable connector can be easily guided into the cable groove and matched with the high-voltage electrode connector.

[0014] Preferably, an annular boss is provided on the outside of the electrode head and at a position corresponding to the bottom section of the cable groove, and a limiting bolt is provided at one end of the annular boss and at the connection between the bottom section and the middle section of the cable groove, and the limiting bolt is threadedly connected to the electrode head. Through the structural design of the annular boss and the limiting bolt, the position of the integrated electrode can be better positioned, and the limiting bolt is fixed at the position where the annular boss is located to prevent the integrated electrode from shaking left and right, thereby ensuring the reliable connection of the cable connector.

[0015] Preferably, the high-voltage electrode connector includes a base and a connector, the base is installed in the bottom section of the cable groove, a plurality of third annular grooves are provided on the outer side of the base, a third sealing ring is provided in the third annular groove, the base is sealed and connected to the bottom section of the cable groove through the third sealing ring in the third annular groove, the connector is installed on the base and is integrally formed with the base, the diameter of the base is greater than the diameter of the connector, the cable head groove is placed on the connector, and a conical groove is provided in the connector and at the bottom of the cable head groove. Through the structural design of the base, while ensuring the reliable connection between the base and the electrical connector, the position of the base can be better positioned to prevent the relative displacement of the base position from affecting the mating connection of the cable connector; through the design of the conical groove, when the cable connector is uneven, it can be guided into the conical groove to ensure the reliable mating connection between the entire cable connector and the cable head groove.

[0016] The beneficial effects of the present invention are: solving the problem that the cable body is not long enough after a cable joint failure, the intermediate joint can achieve the purpose of replacing the traditional two sets of cable (emergency repair) intermediate joints with one set of products, has good sealing effect, protects the cable joint from damage, is easy to locate and install, and the liquid insulating oil can be recycled and reused, thereby improving the installation reliability and convenience of the intermediate joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of some structures in .

[0019] In the figure: 1. Positioning tube, 2. Auxiliary cover, 3. Auxiliary barrel, 4. Liquid injection port, 5. Liquid injection cover, 6. High-voltage electrode joint, 7. Electrode head, 8. Electrode connector, 9. Epoxy part, 10. Liquid insulating oil, 11. Auxiliary joint, 12. Liquid outlet, 13. Second flange, 14. First flange, 15. Integrated electrode, 16. Extended barrel, 17. Through hole, 18. Cable groove, 19. Control valve, 20. Second annular groove, 21. Third flange, 22. Limit bolt, 23. Third annular groove, 24. Second annular groove, 25. First annular groove, 26. First annular groove, 27. Base, 28. Limit tube, 29. Annular boss, 30. Bottom section, 31. Opening section, 32. Middle section, 33. Connector, 34. Cable head groove, 35. Conical groove, 36. Third sealing ring, 37. Positioning hole. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2 In the described embodiment, an extended quick repair intermediate joint includes an extended barrel 16, an auxiliary joint 11, an epoxy part 9 and an integrated electrode 15, the integrated electrode 15 is placed in the extended barrel 16, the epoxy part 9 is placed on both ends of the integrated electrode 15, the auxiliary joint 11 is placed on both ends of the extended barrel 16, the epoxy part 9 is placed between the auxiliary joint 11 and the extended barrel 16, a through hole 17 is provided on the epoxy part 9, the auxiliary joint 11 is connected to the extended barrel 16 through the through hole 17 on the epoxy part 9 to form a cavity, and liquid insulating oil 10 is provided in the cavity.

[0022] The shape of the extended barrel 16 is cylindrical, and the first flange 14 is provided at both ends of the extended barrel 16, and the first flange 14 is provided with a first annular groove 26. The connecting end of the auxiliary joint 11 and the extended barrel 16 is provided with a second flange 13 matching the first flange 14, and the second flange 13 is provided with a second annular groove 24 matching the first annular groove 26. The epoxy member 9 is placed in the area formed by the first annular groove 26 and the second annular groove 24. A first annular groove 25 is provided on the second flange 13 and outside the second annular groove 24, and a first sealing ring is provided in the first annular groove 25.

[0023] The auxiliary joint 11 includes an auxiliary barrel 3 and an auxiliary cover plate 2. The auxiliary barrel 3 is cylindrical in shape. The auxiliary cover plate 2 is installed on one end surface of the auxiliary barrel 3. The auxiliary barrel 3 and the auxiliary cover plate 2 are sealed and connected through a flange. A positioning tube 1 is provided on the auxiliary cover plate 2. The positioning tube 1 is placed in the middle of the auxiliary cover plate 2. The positioning tube 1 and the auxiliary cover plate 2 are connected. A sealing layer is provided in the positioning tube 1. A liquid injection port 4 is provided above the side of the auxiliary barrel 3. A third flange 21 is provided on the liquid injection port 4. A liquid injection cover plate 5 matching the third flange 21 is provided on the liquid injection port 4. A second annular groove 20 is provided on the third flange 21. A second sealing ring is provided in the second annular groove 20. The liquid injection cover plate 5 is sealed and connected to the third flange 21 of the liquid injection port 4 through the second sealing ring. A liquid outlet 12 is provided below the side of the auxiliary barrel 3. A control valve 19 is provided on the liquid outlet 12.

[0024] The epoxy part 9 is circular in shape, with a positioning hole 37 in the middle of the epoxy part 9, and limiting tubes 28 are provided on the left and right side surfaces of the epoxy part 9 and at the position where the positioning hole 37 is located. The diameter of the limiting tube 28 is consistent with the diameter of the positioning hole 37, and the limiting tube 28 and the epoxy part 9 are integrally formed. The through hole 17 is placed on the epoxy part 9 and is located on the outside of the limiting tube 28. There are several through holes 17 and they are evenly distributed on the epoxy part 9 with the positioning hole 37 as the center.

[0025] The integrated electrode 15 includes an electrode head 7 and an electrode connector 8. The electrode head 7 is installed at both ends of the electrode connector 8. The electrode head 7 and the electrode connector 8 are integrally formed. One end of the electrode head 7 is connected to one end of the electrode connector 8. The other end of the electrode head 7 is provided with a cable groove 18. A high-voltage electrode connector 6 is provided in the cable groove 18. A cable head groove 34 is provided on the high-voltage electrode connector 6. The electrode connector 8 is placed in the extended barrel 16. The electrode head 7 is installed on the epoxy part 9. The cable groove 18 includes an opening section 31, a middle section 32 and a bottom section 30. The opening section 31 and the bottom section 30 are cylindrical in shape, the middle section 32 is truncated cone in shape, the diameter of the opening section 31 is larger than the diameter of the bottom section 30, and the diameter of the middle section 32 gradually decreases from near the opening section 31 to near the bottom section 30. The high-voltage electrode connector 6 is installed in the bottom section 30 of the cable groove 18. An annular boss 29 is provided on the outer side of the electrode head 7 and is placed at a position corresponding to the bottom section 30 of the cable groove 18. A limiting bolt 22 is provided at one end of the annular boss 29 and is placed at the connection between the bottom section 30 and the middle section 32 of the cable groove 18. The limiting bolt 22 is threadedly connected to the electrode head 7. The high-voltage electrode connector 6 includes a base 27 and a connector 33. The base 27 is installed in the bottom section 30 of the cable groove 18. A plurality of third annular grooves 23 are provided on the outer side of the base 27. A third sealing ring 36 is provided in the third annular groove 23. The base 27 is sealed and connected to the bottom section 30 of the cable groove 18 through the third sealing ring 36 in the third annular groove 23. The connector 33 is installed on the base 27 and is integrally formed with the base 27. The diameter of the base 27 is greater than the diameter of the connector 33. The cable head groove 34 is placed on the connector 33. A conical groove 35 is provided in the connector 33 and at the bottom of the cable head groove 34.

[0026] When in use, the cable connector to be repaired is inserted from the positioning tube 1 into the auxiliary connector 11, and is sealed and connected to the auxiliary connector 11 through the sealing layer in the positioning tube 1. The inserted cable connector enters the electrical connector of the integrated electrode 15 along the cable groove 18, and matches the cable head groove 34 of the high-voltage electrode connector 6. When the cable connector is uneven, some cables on the cable connector will enter the conical groove 35 until the cable connector and the high-voltage electrode connector 6 are reliably connected. Then, the liquid insulating oil 10 enters from the injection port 4 of the auxiliary connector 11, and the control valve 19 of the liquid outlet 12 is in a closed state. The liquid insulating oil 10 enters into the extended barrel 16 from the through hole 17 of the epoxy part 9 until the cavity formed by the auxiliary connector 11 and the extended barrel is filled with the liquid insulating oil 10, and then the injection cover plate 5 is installed and fixed. In this way, the cable connector and the integrated electrode 15 are fully covered by the liquid insulating oil 10, which can protect the cable connector and the integrated electrode 15.

Claims

1. An extended quick-repair intermediate joint, characterized in that: The invention comprises an extended barrel (16), an auxiliary joint (11), an epoxy component (9) and an integrated electrode (15), wherein the integrated electrode (15) is placed in the extended barrel (16), the epoxy component (9) is placed at both ends of the integrated electrode (15), the auxiliary joint (11) is placed at both ends of the extended barrel (16), the epoxy component (9) is placed between the auxiliary joint (11) and the extended barrel (16), the epoxy component (9) is provided with a through hole (17), the auxiliary joint (11) is connected with the extended barrel (16) through the through hole (17) on the epoxy component (9) to form a cavity, and liquid insulating oil (10) is provided in the cavity, the extended barrel (16) is in the shape of a cylinder, first flanges (14) are provided at both ends of the extended barrel (16), the first flanges (14) are provided with a first annular groove (26), the auxiliary joint (11) is provided with a first annular groove (26), and the auxiliary joint (11) is provided with a first annular groove (26) on the ... A second flange (13) matching the first flange (14) is provided at the connection end between the head (11) and the extended barrel (16); a second annular groove (24) matching the first annular groove (26) is provided on the second flange (13); the epoxy member (9) is placed in an area formed by the first annular groove (26) and the second annular groove (24); the auxiliary joint (11) comprises an auxiliary barrel (3) and an auxiliary cover plate (2); the auxiliary barrel (3) is cylindrical in shape; the auxiliary cover plate (2) is mounted on one end surface of the auxiliary barrel (3); the auxiliary barrel (3) and the auxiliary cover plate (2) are sealed by a flange; a positioning tube (1) is provided on the auxiliary cover plate (2); the positioning tube (1) is placed in the middle of the auxiliary cover plate (2); the positioning tube (1) and the auxiliary cover plate (2) are connected; a sealing layer is provided inside the positioning tube (1).

2. The extended quick-repair intermediate joint according to claim 1 is characterized in that: A first annular groove (25) is provided on the second flange (13) and is located outside the second annular groove (24), and a first sealing ring is provided in the first annular groove (25).

3. The extended quick-repair intermediate joint according to claim 1 is characterized in that: A liquid injection port (4) is provided on the upper side of the auxiliary cylinder body (3), a third flange (21) is provided on the liquid injection port (4), a liquid injection cover plate (5) matching the third flange (21) is provided on the liquid injection port (4), a second annular groove (20) is provided on the third flange (21), a second sealing ring is provided in the second annular groove (20), the liquid injection cover plate (5) is sealedly connected to the third flange (21) of the liquid injection port (4) via the second sealing ring, and a liquid outlet (12) is provided on the lower side of the auxiliary cylinder body (3), and a control valve (19) is provided on the liquid outlet (12).

4. The extended quick-repair intermediate joint according to claim 1 is characterized in that: The epoxy part (9) is circular in shape, a positioning hole (37) is provided in the middle of the epoxy part (9), a limiting tube (28) is provided on the left and right side surfaces of the epoxy part (9) and is located at the position where the positioning hole (37) is located, the diameter of the limiting tube (28) is consistent with the diameter of the positioning hole (37), the limiting tube (28) and the epoxy part (9) are integrally formed, the through hole (17) is provided on the epoxy part (9) and is located outside the limiting tube (28), and a plurality of the through holes (17) are provided and are evenly distributed on the epoxy part (9) with the positioning hole (37) as the center.

5. The extended quick-repair intermediate joint according to claim 1 or 4, characterized in that: The integrated electrode (15) comprises an electrode head (7) and an electrode connector (8), wherein the electrode head (7) is mounted at both ends of the electrode connector (8), the electrode head (7) and the electrode connector (8) are integrally formed, one end of the electrode head (7) is connected to one end of the electrode connector (8), the other end of the electrode head (7) is provided with a cable groove (18), a high-voltage electrode connector (6) is provided in the cable groove (18), a cable head groove (34) is provided on the high-voltage electrode connector (6), the electrode connector (8) is placed in the extended barrel (16), and the electrode head (7) is mounted on the epoxy component (9).

6. The extended quick-repair intermediate joint according to claim 5 is characterized in that: The cable groove (18) comprises an opening section (31), a middle section (32) and a bottom section (30); the opening section (31) and the bottom section (30) are cylindrical in shape; the middle section (32) is truncated cone in shape; the diameter of the opening section (31) is greater than the diameter of the bottom section (30); the diameter of the middle section (32) gradually decreases from close to the opening section (31) to close to the bottom section (30); and the high-voltage electrode connector (6) is installed in the bottom section (30) of the cable groove (18).

7. The extended quick-repair intermediate joint according to claim 6 is characterized in that: An annular boss (29) is provided on the outer side of the electrode head (7) and at a position corresponding to the bottom section (30) of the cable groove (18); a limiting bolt (22) is provided at one end of the annular boss (29) and at a connection between the bottom section (30) and the middle section (32) of the cable groove (18); the limiting bolt (22) is threadedly connected to the electrode head (7).

8. The extended quick-repair intermediate joint according to claim 6 is characterized in that: The high-voltage electrode connector (6) comprises a base (27) and a connector (33); the base (27) is mounted in the bottom section (30) of the cable groove (18); a plurality of third annular grooves (23) are provided on the outer side of the base (27); a third sealing ring (36) is provided in the third annular groove (23); the base (27) is sealedly connected to the bottom section (30) of the cable groove (18) via the third sealing ring (36) in the third annular groove (23); the connector (33) is mounted on the base (27) and is integrally formed with the base (27); the diameter of the base (27) is larger than the diameter of the connector (33); the cable head groove (34) is disposed on the connector (33); a conical groove (35) is provided in the connector (33) and at the bottom of the cable head groove (34).

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