Electric connection structure

Abstract

The invention discloses an electric connection structure which comprises a conductive seat, a conductive rod, a first insulator and a second insulator. One end of the conductive seat is a fixing part matched with the first insulator, and the other end of the conductive seat forms a hoop part; one end of the conducting rod is matched with the second insulator, and the other end of the conducting rod is inserted into the hoop part and is movably hooped by the hoop part. Therefore, through the arrangement of the clamp part, when the clamp part is opened, the conductive rod is not easy to collide with the conductive seat when being plugged with the conductive seat, and metal chips are prevented from being generated, so that the risk of insulation breakdown is reduced, and the insulation reliability is improved. The conducting rod is inserted into the hoop part and then the hoop part is locked, so that the conducting rod and the conducting seat can be tightly connected and matched to form a bus which converges incoming line current and distributes outgoing line current. In addition, the scheme is few in material types, simple in structure, convenient to install and capable of saving labor cost and material cost.

Description

Technical Field

[0001] The invention relates to the technical field of electric contact structures of high voltage switches, in particular to an electric connection structure. Background Art

[0002] As an electrical connection structure, GIS busbar plays an important role in gathering incoming current and distributing outgoing current in GIS, and is one of the main components of GIS. The electrical connection in conventional busbars adopts spring contact structure. Figure 1 As shown: it is mainly composed of a finger contact seat 1, a spring finger contact 2, a guide sleeve 3, a conductive rod 4, a first insulator 5, a second insulator 6, and a hand hole cover 7. The conductive rod 4 is fixed on the first insulator 5, the finger contact seat 1 is fixed on the second insulator 6, the spring finger contact 2 is fixed in the V-shaped groove of the finger contact seat 1, and the guide sleeve 3 is fixed in the rectangular groove of the finger contact seat 1, forming a busbar that gathers the incoming current and distributes the outgoing current.

[0003] The existing structure is relatively complex, and the busbar length of the GIS equipment is relatively long, and generally a single section of the busbar can reach 4-6m. During assembly, when the conductive rod 4 is inserted into the contact finger seat 1, the front opening of the contact finger seat 1 is small, and the conductive rod 4 is difficult to insert, and it is easy to collide with the outer wall of the contact finger seat 1, causing metal chips to fall off.

[0004] Metal chips have a serious impact on the insulation performance of GIS equipment and will cause the equipment to discharge. Therefore, it is necessary to clean the chips from the hand hole cover 7, but it is easy to fail to clean them properly, which is an unstable factor. More than 90% of the discharges on the busbar on site are caused by the failure to clean the metal chips properly. Summary of the invention

[0005] The object of the present invention is to provide an electrical connection structure which has the advantage of improving insulation reliability.

[0006] In order to achieve the above object, the solution of the present invention is: An electrical connection structure comprises a conductive seat, a conductive rod, a first insulator and a second insulator; One end of the conductive seat is a fixing portion matched with the first insulator, and the other end forms a clamp portion; One end of the conductive rod is matched with the second insulator, and the other end is inserted into the clamp part and movably clamped by the clamp part.

[0007] Furthermore, the clamp part includes an annular body with a groove, and the annular center hole of the annular body is for inserting the conductive rod; the annular body is divided into a fixed semi-ring fixedly connected to the fixed part and a movable semi-ring spaced from the fixed part; the circumferential fixed end of the movable semi-ring is connected to the fixed semi-ring, and the groove is formed between the other movable end and the fixed semi-ring, and a locking bolt crossing the groove is provided between the movable end of the movable semi-ring and the fixed semi-ring; the locking bolt controls the width change of the groove and thus controls the aperture change of the annular center hole.

[0008] Furthermore, the fixing half ring is integrally formed with the fixing portion.

[0009] Furthermore, the movable end of the movable half ring is integrally formed with the fixed half ring, and a movable gap is formed between the movable half ring and the fixed portion.

[0010] Furthermore, a bolt groove perpendicular to the groove is provided on the circumferential surface of the movable end of the movable semi-ring, and a bolt hole is provided in the middle of the bottom surface of the bolt groove; a locking hole is provided on the fixed semi-ring corresponding to the bolt hole; the locking bolt is inserted into the bolt groove of the movable semi-ring and passes through the bolt hole and the groove and then movably locked in the locking hole of the fixed semi-ring.

[0011] Furthermore, the conductive seat is spherical, and the ends of the fixing portion and the clamp portion that are away from each other form a fixing plane and a clamp plane respectively.

[0012] Furthermore, the fixing portion of the conductive seat is locked and fixed to the first insulator.

[0013] Furthermore, it also includes a shell and a hand hole cover; the first insulator and the second insulator are respectively installed at two ends of the shell, and the hand hole cover is arranged on the shell near the conductive seat.

[0014] After adopting the above technical solution, by providing a clamp part, when the clamp part is opened, the conductive rod and the conductive seat are not easy to collide with each other when plugged in, avoiding the generation of metal chips, thereby reducing the risk of insulation breakdown and improving insulation reliability. After the conductive rod is inserted into the clamp part and then locked, the conductive rod and the conductive seat can be closely connected to form a busbar that gathers incoming current and distributes outgoing current. In addition, this solution has a small number of material types, a simple structure, and is easy to install, which can save labor costs and material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of an existing electrical connection structure; Figure 2 is a schematic diagram of an embodiment of the present invention; Figure 3 is a three-dimensional diagram of a conductive seat according to an embodiment of the present invention; Figure 4 An exploded view of a conductive seat according to an embodiment of the present invention; Figure 5 FIG. 4 is a top view of a conductive seat according to an embodiment of the present invention.

[0016] Explanation of reference numerals: conductive seat 10, fixed portion 11, fixed plane 111, clamp portion 12, groove 121, annular center hole 122, fixed half ring 123, locking hole 1231, movable half ring 124, fixed end 1241, movable end 1242, bolt groove 1243, bolt hole 1244, locking bolt 125, clamp plane 126, movable gap 13, conductive rod 20, first insulator 30, second insulator 40, shell 50, hand hole cover 60. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] like Figure 2 As shown, an electrical connection structure of this embodiment includes a conductive seat 10, a conductive rod 20, a first insulator 30, a second insulator 40, a housing 50 and a hand hole cover 60.

[0019] One end of the conductive seat 10 is a fixing portion 11 matched with the first insulator 30 , and the other end forms a clamp portion 12 ; one end of the conductive rod 20 is matched with the second insulator 40 , and the other end is inserted into the clamp portion 12 and movably clamped by the clamp portion 12 .

[0020] Thus, by providing the clamp part 12, when the clamp part 12 is opened, the conductive rod 20 is not easy to collide with the conductive seat 10 when plugged into the conductive seat 10, thereby avoiding the generation of metal chips, thereby reducing the risk of insulation breakdown and improving insulation reliability. After the conductive rod 20 is inserted into the clamp part 12 and then the clamp part 12 is locked, the conductive rod 20 and the conductive seat 10 can be tightly connected and matched to form a busbar that gathers incoming current and distributes outgoing current.

[0021] In this embodiment, the first insulator 30 and the second insulator 40 are respectively installed at both ends of the shell 50, and the hand hole cover 60 is arranged on the shell 50 near the conductive seat 10 to facilitate locking or releasing the clamp part 12 after opening the hand hole cover 60.

[0022] In this embodiment, refer to Figures 3 to 5As shown, the clamp part 12 includes an annular body with a groove 121, and the annular central hole 122 of the annular body is for inserting the conductive rod 20. The annular body is divided into a fixed half ring 123 fixedly connected to the fixed part 11 and a movable half ring 124 spaced from the fixed part 11.

[0023] The fixed end 1241 of the movable half ring 124 in the circumferential direction is connected to the fixed half ring 123, and the groove 121 is formed between the movable end 1242 at the other end and the fixed half ring 123, and a locking bolt 125 is arranged between the movable end 1242 of the movable half ring 124 and the fixed half ring 123 to cross the groove 121. The locking bolt 125 controls the width change of the groove 121 and thus controls the aperture change of the annular central hole 122.

[0024] The fixed half ring 123 can be integrally formed with the fixed portion 11 , and the movable end 1242 of the movable half ring 124 can also be integrally formed with the fixed half ring 123 , forming a movable gap 13 between the movable half ring 124 and the fixed portion 11 .

[0025] Thus, the fixed portion 11 is connected to the fixed half ring 123, and the fixed half ring 123 is connected to the movable half ring 124, so that the clamp portion 12 and the fixed portion 11 can be combined with each other to form an integrated conductive seat 10, which is convenient for product assembly and production.

[0026] By rotating the locking bolt 125, the movable end 1242 of the movable half ring 124 can be moved close to the fixed half ring 123 to compress the width of the groove 121, thereby reducing the aperture of the annular middle hole 122 to hold the conductive rod 20 tightly, ensuring that the conductive rod 20 and the conductive seat 10 can be tightly combined and fixed.

[0027] In this embodiment, a bolt groove 1243 perpendicular to the groove 121 is provided on the circumferential surface of the movable end 1242 of the movable semi-ring 124, and a bolt hole 1244 is provided in the middle of the bottom surface of the bolt groove 1243; a locking hole 1231 is provided on the fixed semi-ring 123 corresponding to the bolt hole 1244; the locking bolt 125 can be conveniently inserted into the bolt groove 1243 of the movable semi-ring 124 and pass through the bolt hole 1244 and the groove 121, and then movably locked in the locking hole 1231 of the fixed semi-ring 123, so as to realize a quick and convenient clamp locking operation.

[0028] In this embodiment, the conductive seat 10 may be spherical, and the ends of the fixing portion 11 and the clamp portion 12 that are away from each other respectively form a fixing plane 111 and a clamp plane 126. The fixing plane 111 facilitates the locking and fixing of the fixing portion 11 and the first insulator 30, and the clamp plane 126 facilitates the plug-in matching of the conductive rod 20.

[0029] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, equivalent changes and modifications without departing from the principle of the present invention should still belong to the protection scope of the present invention.

[0030] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

Claims

1. An electrical connection structure, characterized in that: It includes a conductive seat, a conductive rod, a first insulator and a second insulator; One end of the conductive seat is a fixing portion matched with the first insulator, and the other end forms a clamp portion; One end of the conductive rod is matched with the second insulator, and the other end is inserted into the clamp part and movably clamped by the clamp part.

2. An electrical connection structure according to claim 1, characterized in that: The clamp part includes an annular body with a groove, and the annular center hole of the annular body is for inserting the conductive rod; the annular body is divided into a fixed semi-ring fixedly connected to the fixed part and a movable semi-ring spaced from the fixed part; the fixed end of the movable semi-ring in the circumferential direction is connected to the fixed semi-ring, and the groove is formed between the other movable end and the fixed semi-ring, and a locking bolt crossing the groove is provided between the movable end of the movable semi-ring and the fixed semi-ring; the locking bolt controls the change in the width of the groove and thus controls the change in the aperture of the annular center hole.

3. An electrical connection structure according to claim 2, characterized in that: The fixing half ring is integrally formed on the fixing portion.

4. An electrical connection structure according to claim 2, characterized in that: The movable end of the movable half ring is integrally formed with the fixed half ring, and a movable gap is formed between the movable half ring and the fixed part.

5. An electrical connection structure according to claim 2, characterized in that: A bolt groove perpendicular to the groove is provided on the circumferential surface of the movable end of the movable semi-ring, and a bolt hole is provided in the middle of the bottom surface of the bolt groove; a locking hole is provided on the fixed semi-ring corresponding to the bolt hole; the locking bolt is inserted into the bolt groove of the movable semi-ring and passes through the bolt hole and the groove and then movably locked in the locking hole of the fixed semi-ring.

6. An electrical connection structure according to claim 1, characterized in that: The conductive seat is spherical, and the ends of the fixing portion and the clamp portion that are away from each other form a fixing plane and a clamp plane respectively.

7. An electrical connection structure according to claim 1, characterized in that: The fixing portion of the conductive seat is locked and fixed to the first insulator.

8. An electrical connection structure according to claim 1, characterized in that: It also includes a shell and a hand hole cover; the first insulator and the second insulator are respectively installed at two ends of the shell, and the hand hole cover is arranged on the shell near the conductive seat.

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