Bus connection structure and rigid power transmission pipeline

Abstract

The utility model provides a bus connection structure and a rigid power transmission pipeline, belonging to the rigid power transmission equipment technology field, the bus connection structure comprises a contact seat, a contact and a shielding cover, the contact seat is electrically conducted with the contact, the shielding cover is provided with a hollow space, a gap is formed between one end of the shielding case and the outer surface of the contact seat inserted into the hollow space, the other end of the shielding case is attached to the contact, the other end of the shielding case is provided with a plurality of fixing grooves, the fixing grooves are recessed relative to the outer surface of the shielding case, through holes are formed in the bottoms of the fixing grooves, and the through holes are communicated with the through holes. The shielding cover is in threaded connection with the end portion of the contact through a threaded fastener at the fixing groove and the through hole, the head portion of the threaded fastener sinks into the fixing groove, and the tail portion of the threaded fastener is in threaded connection with the blind hole in the contact. According to the utility model, the shielding case and the contact seat are not rubbed with the contact to generate foreign matters, so that the safety of equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rigid power transmission equipment technical field especially relates to a bus connection structure and rigid power transmission pipeline. BACKGROUND

[0002] The rigid power transmission pipeline includes GIL (Chinese full name is "gas insulated metal enclosed transmission line") bus and GIS (Chinese full name is "gas insulated enclosed switchgear") bus, and usually the rigid power transmission pipeline includes several bus sections, and the adjacent bus sections are fixed by using the connecting structure for insertion. In the prior art, the connecting structure includes a contact seat, a contact and a shielding cover, the contact seat and the contact are inserted, the shielding cover covers the contact seat and the contact at the position connected by the contact seat and the contact, the contact seat is provided with a groove, a spring and a metal contact point are arranged in the groove, the spring is in a compressed state, and the metal contact point is electrically conducted with the spring and the shielding cover. Foreign matter is easily generated between the metal contact point and the shielding cover by friction, and there is a safety hazard in operation. SUMMARY

[0003] One of the purposes of the utility model is to solve the safety problem caused by the friction between the metal contact point and the shielding cover, and therefore the utility model provides a bus connection structure and a rigid power transmission pipeline.

[0004] The technical scheme of the utility model is as follows:

[0005] A bus connection structure includes a contact seat, a contact and a shielding cover, the contact seat is electrically conducted with the contact, the shielding cover has a hollow space, a gap is arranged between one end of the shielding cover and the outer surface of the contact seat inserted into the hollow space, the other end of the shielding cover is attached to the contact, and the other end of the shielding cover has a plurality of fixing grooves, the fixing grooves are recessed relative to the outer surface of the shielding cover, the bottom of the fixing groove is provided with a through hole, the shielding cover is threadedly connected with the end of the contact at the fixing groove and the through hole through a threaded fastener, the head of the threaded fastener is sunk into the fixing groove, and the tail is threadedly connected with the blind hole on the contact.

[0006] As an optional scheme, an annular boss is arranged on the inner wall of one end of the shielding cover, the inner circle of the annular boss is attached to the contact, and the through holes are arranged along the circumferential direction of the annular boss.

[0007] As an optional scheme, 3 or 4 through holes are arranged in the circumferential direction of the boss, and the through holes are uniformly arranged in the circumferential direction.

[0008] As an optional scheme, the width of the gap is greater than 5mm.

[0009] As an option, the contact includes a thick tube section and a thin tube section with equal inner diameters and different outer diameters, the thick tube section is located at the end of the contact, and the blind hole is arranged on the thick tube section.

[0010] As an option, one end of the contact seat is provided with a first annular groove and a second annular groove, a guide support ring for supporting the contact is arranged in the first annular groove, and a conductive contact finger is arranged in the second annular groove, and the inner wall of the second annular groove, the surface of the conductive contact finger, and the area on the contact that contacts the conductive contact finger are respectively plated with a silver layer.

[0011] As an option, the first annular groove is closer to the end face of the contact seat than the second annular groove, the guide support ring is made of polytetrafluoroethylene synthetic material, and the contact seat and the contact are coaxially retained through the guide support ring.

[0012] As an option, the contact seat includes a cylinder and an end plate, one end of the cylinder is provided with the first annular groove and the second annular groove, the other end of the cylinder is provided with the end plate, and the center of the end plate has a through hole.

[0013] As an option, the shield and the contact are respectively made of aluminum alloy material, the contact seat is made of aluminum alloy or copper conductive material, and the threaded fastener is a countersunk screw made of stainless steel.

[0014] A rigid power transmission pipeline includes a plurality of bus bars and the bus bar connecting structure of any one of the above, the bus bar includes a conductor, and the conductors of adjacent bus bars are fixedly connected and electrically conducted through the bus bar connecting structure.

[0015] The utility model at least includes following beneficial effect:

[0016] In the utility model, the shield and the contact are fixedly connected through the fastener, and friction does not occur between the two, a gap is arranged between the shield and the contact seat, and friction does not occur between the two, so that foreign matters generated by friction are avoided, and the safety of the bus bar connecting structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The technical features and advantages of the utility model can be more fully understood by combining the drawings and referring to the following detailed description.

[0018] Figure 1 is the sectional view of the bus bar connecting structure of the utility model embodiment.

[0019] REFERENCE NUMERALS:

[0020] 1, shield; 11, hollow space; 12, gap; 13, fixing groove; 14, first profiled pipe segment; 15, straight pipe segment; 16, second profiled pipe segment; 17, annular boss; 2, contact; 21, thick pipe segment; 22, thin pipe segment; 3, contact seat; 31, cylinder; 311, first annular groove; 312, second annular groove; 32, end plate; 321, through hole; 4, threaded fastener; 5, guiding support ring; 6, conductive contact finger. DETAILED DESCRIPTION

[0021] Unless otherwise defined, technical or scientific terms used in this specification and claims shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0022] Reference Figure 1 It is understood that the busbar connecting structure according to the embodiments of the present application can connect two adjacent busbars.

[0023] The busbar connecting structure comprises a contact seat 3, a contact 2 and a shield 1, the contact seat 3 is electrically connected with the contact 2, the shield 1 has a hollow space 11, a gap 12 is arranged between one end of the shield 1 and the outer surface of the contact seat 3 inserted into the hollow space 11, the other end of the shield 1 is attached to the contact 2, and the other end of the shield 1 has a plurality of fixing grooves 13, the fixing grooves 13 are recessed relative to the outer surface of the shield 1, the bottom of the fixing grooves 13 is provided with a through hole, the shield 1 is threadedly connected with the end of the contact 2 at the fixing grooves 13 and the through hole by a threaded fastener 4, the head of the threaded fastener 4 is sunk into the fixing grooves 13, and the tail is threadedly connected with a blind hole on the contact 2. The threaded fastener 4 can be a countersunk screw made of stainless steel. In the embodiment, the shield 1 and the contact 2 are fixedly connected by the fastener, and no friction is generated between the two, the gap 12 is arranged between the shield 1 and the contact seat 3, and no friction is generated between the two, so that no foreign matter is generated due to friction, and the safety of the busbar connecting structure is improved.

[0024] The shield 1 is made of aluminum alloy material, and is a hollow structure with both ends open, which can also be explained as a tubular structure. The shield 1 comprises a first profiled pipe segment 14, a straight pipe segment 15 and a second profiled pipe segment 16 arranged in sequence. The first profiled pipe segment 14 gradually shrinks in inner diameter from one end close to the straight pipe segment 15 to the other end, and the outer diameter also gradually shrinks. The end of the first profiled pipe segment 14 and the contact seat 3 form the above-mentioned gap 12, and the width of the gap 12 is greater than 5 mm. The inner diameter of the straight pipe segment at each position is consistent, and the outer diameter is also consistent. The second profiled pipe segment 16 is in a shrinkage state from one end close to the straight pipe segment 15 to the other end. The second profiled pipe segment 16 is provided with an annular boss 17 protruding inward at the opening, the inner circle of the annular boss 17 is in close contact with the outer surface of the contact 2, and the through holes are distributed along the circumferential direction of the annular boss 17. In the embodiment, the through holes are uniformly arranged to improve the reliability of the connection between the shield 1 and the contact 2, but other embodiments in which the through holes are not uniformly distributed are also within the protection scope of the utility model. In the embodiment, the shield 1 has three fixing grooves 13, and correspondingly, the annular boss 17 has three through holes, so that the shield 1 and the contact 2 are connected at three positions. In other embodiments, the shield 1 can have four fixing grooves 13 uniformly distributed thereon, and the shield 1 and the contact 2 form four connections.

[0025] The contact 2 is made of aluminum alloy material and has good conductivity. The contact 2 comprises a thick pipe segment 21 and a thin pipe segment 22. The inner diameters of the thick pipe segment 21 and the thin pipe segment 22 are equal and the outer diameters are different, and the two are coaxial to facilitate the installation of the round rod-shaped conductor. One end of the thin pipe segment 22 is inserted into the contact seat 3 and is in electrical conduction with the contact seat 3. The thick pipe segment 21 is located at the end of the contact 2, and the wall thickness of the thick pipe segment 21 is significantly greater than that of the thin pipe segment 22 to form a blind hole in the thick pipe segment 21.

[0026] The contact seat 3 is made of aluminum alloy or copper conductive material. The contact seat 3 comprises a cylinder 31 and an end plate 32, and the end plate 32 is located at one end of the cylinder 31. The center of the end plate 32 is provided with a through hole 321 for the conductor to pass through. The inner side of the other end of the cylinder 31 is provided with a first annular groove 311 and a second annular groove 312. The first annular groove 311 is closer to the end face of the cylinder 31 than the second annular groove 312. The first annular groove 311 and the second annular groove 312 are arranged in close proximity and are separated by an annular partition. The depth of the first annular groove 311 can be shallower than the depth of the second annular groove 312, and the width of the first annular groove 311 in the axial direction of the cylinder 31 is smaller than the width of the second annular groove 312.

[0027] The first annular groove 311 is provided with a guide support ring 5 for supporting the contact 2, the contact seat 3 and the contact 2 are kept coaxial through the guide support ring 5, the guide support ring 5 is made of polytetrafluoroethylene synthetic material, the contact 2 can rotate relative to the contact seat 3 after being inserted into the contact seat 3, but the inner ring of the support ring is attached to the contact 2, the contact 2 is constrained, the rotating amplitude of the contact 2 and the contact seat 3 can be reduced, and the friction loss between the contact 2 and the contact seat 3 can be reduced. The second annular groove 312 is provided with a conductive contact finger 6, the conductive contact finger 6 is made of high-conductivity material, the inner wall of the second annular groove 312, the surface of the conductive contact finger 6 and the area of the contact 2 in contact with the conductive contact finger 6 are respectively plated with a silver layer, so that the electrical conduction performance of the contact seat 3 and the contact 2 is improved.

[0028] The utility model embodiment further provides a rigid power transmission pipeline, including a plurality of busbars and the busbar connecting structure of any one of above-mentioned embodiments, the busbar includes a conductor, the conductor of adjacent busbars is fixedly connected through the busbar connecting structure and is electrically conducted.

[0029] In addition, the terms "first", "second", and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", etc. can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0030] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

Claims

1. A busbar connecting structure comprising a contact seat, a contact head and a shield cover, the contact seat and the contact head being electrically connected, characterized in that: the shield cover has a hollow space, a gap is provided between one end of the shield cover and the outer surface of the contact seat inserted into the hollow space, the other end of the shield cover is attached to the contact head, and the other end of the shield cover has a plurality of fixing grooves recessed relative to the outer surface of the shield cover, the bottom of the fixing groove is provided with a through hole, and the shield cover is threadedly connected to the end of the contact head at the fixing groove and the through hole by a threaded fastener, the head of the threaded fastener is sunk into the fixing groove, and the tail is threadedly connected to a blind hole on the contact head. An annular boss is provided on the inner wall of one end of the shield cover, the inner ring of the annular boss is attached to the contact head, and the through holes are arranged along the circumferential direction of the annular boss.

2. The busbar connection structure according to claim 1, characterized in that There are 3 or 4 through holes in the circumferential direction of the boss, and each through hole is uniformly arranged in the circumferential direction.

3. The busbar connection structure according to claim 2, characterized in that The width of the gap is greater than 5mm.

4. The busbar connection structure according to claim 1, characterized in that, The contact head comprises a thick tube section and a thin tube section with equal inner diameters and different outer diameters, the thick tube section is located at the end of the contact head, and the blind hole is provided on the thick tube section.

5. The busbar connection structure according to claim 1, characterized in that, One end of the contact seat is provided with a first annular groove and a second annular groove, a guide support ring for supporting the contact head is arranged in the first annular groove, and a conductive contact finger is arranged in the second annular groove, the inner wall of the second annular groove, the surface of the conductive contact finger and the area of the contact head contacting the conductive contact finger are respectively plated with a silver layer.

6. The busbar connection structure according to claim 1, characterized in that The first annular groove is closer to the end surface of the contact seat than the second annular groove; the guide support ring is made of polytetrafluoroethylene synthetic material, and the contact seat and the contact head are coaxially arranged through the guide support ring.

7. The busbar connection structure according to claim 6, characterized in that The contact seat comprises a cylinder and an end plate, one end of the cylinder is provided with the first annular groove and the second annular groove, the other end of the cylinder is provided with the end plate, and the center of the end plate has a through hole.

8. The busbar connection structure according to claim 6, characterized in that The shield cover and the contact head are respectively made of aluminum alloy material, the contact seat is made of aluminum alloy or copper conductive material, and the threaded fastener is a countersunk screw made of stainless steel.

9. The busbar connection structure according to any one of claims 1 to 8, characterized in that A plurality of busbars and the busbar connecting structure according to any one of claims 1 to 9 are provided, the busbar comprises a conductor, and the conductors of adjacent busbars are fixedly connected and electrically connected through the busbar connecting structure.

10. A rigid power transmission conduit, characterized by, ​

Images