Longitudinal sealing high-temperature-resistant electric connector

Abstract

The invention discloses a longitudinally-sealed high-temperature-resistant electric connector which comprises a plug shell and a socket shell, the plug shell and the socket shell are fixed through a connecting nut, a plug insulator is inserted into the plug shell, a plug compression nut is installed in the plug shell in a threaded mode, and the plug compression nut is connected with the socket shell in a threaded mode. The invention relates to the technical field of connectors. According to the longitudinal sealing high-temperature-resistant electric connector, convenient and stable assembly of the electric jack piece is achieved through cooperation of the plug insulator, the plug compression nut and the plug insulation pressing plate, convenient and stable assembly of the electric pin piece is achieved through cooperation of the socket insulator, the socket compression nut and the socket insulation pressing plate, and the electric pin piece can be conveniently and stably assembled through arrangement of the connecting nut. The stable connection of the plug shell and the socket shell is ensured, the stable connection of the electric pin piece and the electric jack piece is further ensured, the stable and reliable guarantee is provided for the longitudinal sealing connection of the cable, the disassembly and assembly are convenient, and the electric energy transmission can be realized in a severe environment.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a longitudinally sealed high-temperature resistant electrical connector. Background Art

[0002] With the rapid development of urban construction, urban traffic is becoming increasingly congested. Shield machines and tunnel boring machines have become the main equipment for tunnel excavation. A large number of watertight electrical connectors are needed on these tunnel excavation equipment.

[0003] Due to the complex and harsh environment of underground tunnels and the high temperature in the equipment cabin, the connector not only needs to stably transmit electrical energy to the equipment, but also needs to be resistant to high temperatures, have good sealing performance, and transmit currents of different required values ​​to ensure that different equipment can operate stably. For this reason, a longitudinally sealed high-temperature resistant electrical connector is proposed, which has the advantages of high sealing, high temperature resistance, simple structure and small size. The same connector can transmit currents of different values, can be installed and disassembled for multiple uses, can realize power transmission in harsh environments, and is convenient for inputting the electrical performance of tunnel excavation equipment in complex operating environments. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a longitudinally sealed high temperature resistant electrical connector, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a longitudinally sealed high temperature resistant electrical connector, comprising a plug housing and a socket housing, the plug housing and the socket housing are fixed by a connecting nut, a plug insulator is inserted into the interior of the plug housing, a plug clamping nut is threadedly installed in the interior of the plug housing, a plug insulating pressure plate is arranged in the interior of the plug housing and located between the plug insulator and the plug clamping nut, a socket insulator is inserted into the interior of the socket housing, a socket clamping nut is also threadedly installed in the interior of the socket housing, and a socket insulating pressure plate is arranged in the interior of the socket housing and located between the socket clamping nut and the socket insulator; The plug housing and the socket housing have cables fixedly mounted on one end through a sealing colloid, an electrical socket part used in conjunction with the cable is plugged into the interior of the plug insulator, an electrical pin part used in conjunction with the cable is plugged into the interior of the socket insulator, and the electrical socket part and the electrical pin part are used in conjunction with each other.

[0006] The present invention is further configured as follows: the interior of the other end of the socket shell is in sliding contact with the other side of the outer periphery of the plug shell, the outer periphery of the other end of the socket shell is provided with a three-start thread, the three-start thread cooperates with the inner surface thread of the connecting nut, the connecting nut is sleeved on the outer periphery of the plug shell, and a static clamping ring is clamped on the outer periphery of the plug shell and on one side of the connecting nut.

[0007] The present invention is further configured as follows: a moving clamp ring is clamped on the outer periphery of the static clamp ring, a corrugated spring is arranged on a side of the connecting nut close to the static clamp ring, and one side of the corrugated spring is in contact with one side of the moving clamp ring; A positioning spring is also arranged between the outer periphery of the plug insulator and the inner wall of the plug housing.

[0008] The present invention is further configured as follows: glass powder is filled between the plug compression nut and the sealing colloid in the plug housing and between the socket compression nut and the sealing colloid in the socket housing, and the glass powder is arranged on the periphery of the electric core of the cable.

[0009] The present invention is further configured as follows: a plurality of first O-rings are sleeved on the outer periphery of the electrical socket part, and a plurality of second O-rings are sleeved on the outer periphery of the electrical pin part; Sealing grooves are provided inside the socket shell and on the outer periphery of both ends of the socket insulator, as well as on one side of the outer edge of the socket shell. A rubber ring is provided in the sealing groove inside the socket shell and on the outer periphery of one end of the socket insulator, and the rubber ring is used in conjunction with the other end of the plug shell; A third O-ring is arranged in another sealing groove inside the socket housing, and the third O-ring is sleeved on the outer periphery of the other end of the socket insulator.

[0010] The present invention is further configured as follows: a socket is provided at one end of the electrical socket component, and the inner surface of the socket is used in conjunction with the outer surface of one end of the electrical pin component.

[0011] The present invention is further configured such that: the other ends of the electrical socket part and the electrical pin part are both provided with a battery core docking hole, and the battery core docking hole is used in conjunction with the battery core of the cable.

[0012] The present invention is further configured as follows: a conical pipe thread is provided on the outer periphery of the other end of the socket housing, a common thread is provided inside the other end of the socket housing, and the common thread cooperates with the socket clamping nut thread, and a sealing ring is provided in the sealing groove on one side of the outer edge of the socket housing.

[0013] The present invention provides a longitudinally sealed high temperature resistant electrical connector. It has the following beneficial effects: (1) The present invention realizes convenient and stable assembly of electrical socket parts through the cooperation of the plug insulator, the plug clamping nut and the plug insulating pressure plate, and realizes convenient and stable assembly of electrical pin parts through the cooperation of the socket insulator, the socket clamping nut and the socket insulating pressure plate. Under the setting of the connecting nut, the stable connection between the plug shell and the socket shell is ensured, and then the stable connection between the electrical pin parts and the electrical socket parts is ensured, providing stable and reliable protection for the longitudinal sealing connection of the cable. While convenient disassembly and assembly, it can realize power transmission in harsh environments.

[0014] (2) The present invention ensures a stable sealed connection between the cable and the plug housing and the socket housing by providing a sealing colloid and glass powder, and ensures the sealing of the connection between the electrical pin and the electrical socket and the plug insulator and the socket insulator with the cooperation of the first O-ring and the second O-ring. With the cooperation of the colloid, the sealing of the connection between the plug housing and the socket housing is further ensured, providing reliable protection for the normal use of the connector in complex environments.

[0015] (3) The present invention forms an anti-loosening structure by coordinating the static clamp ring, the dynamic clamp ring and the corrugated spring, which further ensures the stability of the connection between the plug housing and the socket housing, and provides support for the long-term, stable and effective use of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the plug housing of the present invention; Figure 2 It is a schematic diagram of the internal structure of the socket housing of the present invention; Figure 3 It is a structural schematic diagram of the socket housing of the present invention; Figure 4 is a cross-sectional view of the plug insulator structure in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of an electrical plug pin in an embodiment of the present invention; Figure 6 Schematic diagram of the electrical socket structure in an embodiment of the present invention.

[0017] In the figure: 1. Connecting nut; 2. Plug housing; 3. Corrugated spring; 4. Dynamic clamp ring; 5. Static clamp ring; 6. Positioning spring; 7. Plug insulating pressure plate; 8. Plug clamping nut; 9. Plug insulator; 10. Electrical socket; 11. First O-ring; 12. Glass powder; 13. Sealing colloid; 14. Cable; 15. Socket housing; 1501. Three-start thread; 1502. Sealing groove; 1503. Conical pipe thread; 1504. Ordinary thread; 16. Rubber ring; 17. Sealing ring; 18. Third O-ring; 19. Electrical pin; 20. Second O-ring; 21. Socket insulator; 22. Socket insulating pressure plate; 23. Socket clamping nut; 24. Socket; 25. Battery core docking hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-6The embodiment of the present invention provides the following technical solutions: a longitudinally sealed high temperature resistant electrical connector, comprising a plug housing 2 and a socket housing 15, the plug housing 2 and the socket housing 15 are fixed by a connecting nut 1, in order to realize the anti-loosening connection between the plug housing 2 and the socket housing 15, the interior of the other end of the socket housing 15 is in sliding contact with the other side of the outer periphery of the plug housing 2, the outer periphery of the other end of the socket housing 15 is provided with a three-start thread 1501, the three-start thread 1501 is matched with the inner surface thread of the connecting nut 1, the connecting nut 1 is sleeved on the outer periphery of the plug housing 2, the outer periphery of the plug housing 2 and located on one side of the connecting nut 1 are clamped with a static clamp ring 5, the outer periphery of the static clamp ring 5 is clamped with a dynamic clamp ring 4, a corrugated spring 3 is provided on the side of the connecting nut 1 close to the static clamp ring 5, and one side of the corrugated spring 3 is in contact with one side of the dynamic clamp ring 4.

[0020] Further explanation, in order to ensure the sealing of the connection between the plug housing 2 and the socket housing 15 , a rubber ring 16 is arranged inside the socket housing 15 , and the rubber ring 16 is used in conjunction with the plug housing 2 to ensure the sealing effect.

[0021] As a preferred solution, in order to achieve a stable sealed connection between the cable 14 and the plug housing 2 and the socket housing 15, one end of the plug housing 2 and the socket housing 15 are fixedly installed with the cable 14 through a sealing colloid 13, and glass powder 12 is filled around the outer periphery of the battery core of the cable 14 to form a sintered layer to further ensure the sealing effect.

[0022] As a preferred solution, in order to ensure the effective docking of the two cables 14, a plug insulator 9 is inserted into the interior of the plug housing 2, and a positioning spring 6 is also arranged between the outer periphery of the plug insulator 9 and the inner wall of the plug housing 2. A plug clamping nut 8 is installed on the inner thread of the plug housing 2, and a plug insulation pressure plate 7 is arranged inside the plug housing 2 and between the plug insulator 9 and the plug clamping nut 8. A socket insulator 21 is inserted into the interior of the socket housing 15, and a socket clamping nut 23 is also installed on the interior of the socket housing 15, and a socket insulation pressure plate 22 is arranged inside the socket housing 15 and between the socket clamping nut 23 and the socket insulator 21. An electrical socket part 10 used in conjunction with the cable 14 is inserted into the interior of the plug insulator 9, and an electrical pin part 19 used in conjunction with the cable 14 is inserted into the interior of the socket insulator 21, and the electrical socket part 10 is used in conjunction with the electrical pin part 19, as a detailed description, as shown in the attached Figure 4 As shown, the plug insulator 9 and the socket insulator 21 are provided with a plurality of holes of different sizes or the same size, each of which can be installed with different types of electrical socket parts 10 and electrical pin parts 19, wherein the glass powder 12 is filled between the plug clamping nut 8 and the sealing colloid 13 in the plug housing 2 and between the socket clamping nut 23 and the sealing colloid 13 in the socket housing 15.

[0023] To further explain, a socket 24 is provided at one end of the electrical socket member 10, and the inner surface of the socket 24 is used in conjunction with the outer surface of one end of the electrical pin member 19, and the other ends of the electrical socket member 10 and the electrical pin member 19 are both provided with a battery cell docking hole 25, which is used in conjunction with the battery cell of the cable 14.

[0024] As a preferred solution, in order to ensure the sealed docking between the electrical socket component 10 and the plug insulator 9 and the electrical pin component 19 and the socket insulator 21, annular grooves are designed on the electrical socket component 10 and the electrical pin component 19 for installing a plurality of first O-rings 11 and a plurality of second O-rings 20, so as to ensure the sealing and non-eccentric fixation of the electrical socket component 10 and the electrical pin component 19. Specifically, the plug insulating pressure plate 7 and the socket insulating pressure plate 22 respectively fix and limit the electrical socket component 10 and the electrical pin component 19, and then they are clamped and fixed by the plug clamping nut 8 and the socket clamping nut 23.

[0025] To further illustrate, sealing grooves 1502 are provided inside the socket housing 15 and on the outer periphery at both ends of the socket insulator 21, as well as on one side of the outer edge of the socket housing 15. A rubber ring 16 is provided in the sealing groove 1502 inside the socket housing 15 and on the outer periphery of one end of the socket insulator 21. The rubber ring 16 is used in conjunction with the other end of the plug housing 2. A third O-ring 18 is provided in another sealing groove 1502 inside the socket housing 15, and the third O-ring 18 is sleeved on the outer periphery of the other end of the socket insulator 21.

[0026] As a preferred solution, in order to ensure convenient assembly of the connector, a tapered pipe thread 1503 is provided on the outer periphery of the other end of the socket housing 15, and a common thread 1504 is provided inside the other end of the socket housing 15, and the common thread 1504 is threadedly matched with the socket clamping nut 23, and a sealing ring 17 is provided in the sealing groove 1502 on one side of the outer edge of the socket housing 15, wherein the sealing groove 1502 is used to install the rubber ring 16, the sealing ring 17 and the third O-ring 18, which can realize axial and longitudinal sealing, the tapered pipe thread 1503 is used to connect the shield machine equipment cabin, and this thread has sealing performance, and the common thread 1504 is used to connect the socket clamping nut 23 to fix the socket insulating pressure plate 22.

[0027] For further explanation, see the attached Figure 4-6 As shown, the axial dimensions of the electrical socket parts 10 and the electrical pin parts 19 of different specifications are the same, and a plurality of holes of different numbers and sizes can be opened on the plug insulator 9 and the socket insulator 21, each hole can be used to place a contact, and holes of different sizes can be adapted to electrical socket parts 10 and electrical pin parts 19 of different models and specifications, so that the same type of connector can be matched with electrical contacts of different numbers and specifications.

[0028] As a detailed explanation, all parts in the connector are temperature-resistant to 300°C, among which the plug housing 2, socket housing 15, connecting nut 1, plug clamping nut 8, socket clamping nut 23, static clamping ring 5, dynamic clamping ring 4, corrugated spring 3 and positioning spring 6 are all made of titanium alloy material, the first O-ring 11, the second O-ring 20, the third O-ring 18, the sealing ring 17 and the rubber ring 16 are all made of fluorosilicone rubber material, the plug insulator 9, the plug insulating pressure plate 7, the socket insulator 21 and the socket insulating pressure plate 22 are all made of polyetheretherketone material, ensuring that the entire connector can still operate normally in a sealed cabin with a higher temperature.

[0029] When in use, the socket housing 15 is directly inserted between the plug housing 2 and the connecting nut 1, and the connecting nut 1 is tightened so that the end of the plug housing 2 contacts and squeezes the rubber ring 16, and the connector assembly is completed. During the tightening process of the connecting nut 1, the plug end of the electrical pin 19 is inserted into the socket 24 to achieve electrical connection contact. After the assembly is completed, the connector can maintain normal operation 1000 meters underwater.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A longitudinally sealed high temperature resistant electrical connector, comprising a plug housing (2) and a socket housing (15), wherein the plug housing (2) and the socket housing (15) are fixed by a connecting nut (1), characterized in that: A plug insulator (9) is inserted into the interior of the plug housing (2), a plug clamping nut (8) is threadedly mounted on the interior of the plug housing (2), a plug insulating pressure plate (7) is arranged inside the plug housing (2) and between the plug insulator (9) and the plug clamping nut (8), a socket insulator (21) is inserted into the interior of the socket housing (15), a socket clamping nut (23) is threadedly mounted on the interior of the socket housing (15), and a socket insulating pressure plate (22) is arranged inside the socket housing (15) and between the socket clamping nut (23) and the socket insulator (21); One end of the plug housing (2) and the socket housing (15) are fixedly mounted with a cable (14) via a sealing colloid (13); an electrical socket component (10) for use with the cable (14) is plugged into the interior of the plug insulator (9); an electrical pin component (19) for use with the cable (14) is plugged into the interior of the socket insulator (21); and the electrical socket component (10) and the electrical pin component (19) are used in conjunction with each other.

2. A longitudinally sealed high temperature resistant electrical connector according to claim 1, characterized in that: The interior of the other end of the socket housing (15) is in sliding contact with the other side of the outer periphery of the plug housing (2); the outer periphery of the other end of the socket housing (15) is provided with a three-start thread (1501); the three-start thread (1501) cooperates with the inner surface thread of the connecting nut (1); the connecting nut (1) is sleeved on the outer periphery of the plug housing (2); a static clamping ring (5) is clamped on the outer periphery of the plug housing (2) and located on one side of the connecting nut (1).

3. A longitudinally sealed high temperature resistant electrical connector according to claim 2, characterized in that: The outer periphery of the static clamp ring (5) is clamped with a dynamic clamp ring (4); a corrugated spring (3) is provided on a side of the connecting nut (1) close to the static clamp ring (5), and one side of the corrugated spring (3) is in contact with one side of the dynamic clamp ring (4); A positioning spring (6) is also provided between the outer periphery of the plug insulator (9) and the inner wall of the plug housing (2).

4. A longitudinally sealed high temperature resistant electrical connector according to claim 1, characterized in that: Glass powder (12) is filled between the plug clamping nut (8) and the sealing colloid (13) in the plug housing (2) and between the socket clamping nut (23) and the sealing colloid (13) in the socket housing (15), and the glass powder (12) is arranged on the periphery of the electric core of the cable (14).

5. The longitudinally sealed high temperature resistant electrical connector according to claim 1, characterized in that: The outer circumference of the electrical socket part (10) is sleeved with a plurality of first O-rings (11), and the outer circumference of the electrical pin part (19) is sleeved with a plurality of second O-rings (20); Sealing grooves (1502) are provided inside the socket housing (15) and on the periphery of both ends of the socket insulator (21), as well as on one side of the outer edge of the socket housing (15); a rubber ring (16) is provided inside the socket housing (15) and in the sealing groove (1502) on the periphery of one end of the socket insulator (21); the rubber ring (16) is used in conjunction with the other end of the plug housing (2); A third O-ring (18) is arranged in another sealing groove (1502) inside the socket housing (15), and the third O-ring (18) is sleeved on the outer circumference of the other end of the socket insulator (21).

6. A longitudinally sealed high temperature resistant electrical connector according to claim 1, characterized in that: One end of the electrical socket part (10) is provided with a socket (24), and the inner surface of the socket (24) is used in conjunction with the outer surface of one end of the electrical pin part (19).

7. A longitudinally sealed high temperature resistant electrical connector according to claim 1, characterized in that: The other ends of the electrical socket member (10) and the electrical pin member (19) are each provided with a battery core docking hole (25), and the battery core docking hole (25) is used in conjunction with the battery core of the cable (14).

8. The longitudinally sealed high temperature resistant electrical connector according to claim 5, characterized in that: The outer circumference of the other end of the socket housing (15) is provided with a conical pipe thread (1503), the interior of the other end of the socket housing (15) is provided with a common thread (1504), and the common thread (1504) is threadably matched with the socket clamping nut (23), and a sealing ring (17) is provided in the sealing groove (1502) on one side of the outer edge of the socket housing (15).

Images