CN214123730U - High-voltage moving contact for stepless on-load capacitance-regulating switch and insulating support thereof - Google Patents
High-voltage moving contact for stepless on-load capacitance-regulating switch and insulating support thereof Download PDFInfo
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- CN214123730U CN214123730U CN202121779268.1U CN202121779268U CN214123730U CN 214123730 U CN214123730 U CN 214123730U CN 202121779268 U CN202121779268 U CN 202121779268U CN 214123730 U CN214123730 U CN 214123730U
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Abstract
The utility model discloses a high-voltage moving contact and an insulating bracket thereof for a stepless on-load capacity-regulating switch; the high-voltage moving contact comprises an electric-magnetic-drive regulating contact and an electric-reactance regulating moving contact which are symmetrically arranged on two sides of the transmission main shaft; the transmission main shaft is fixedly connected with an insulating bracket through a supporting flange; the electromagnetic moving contact and the electric reactance adjusting moving contact are respectively fixed at the two sides of the insulating support; an insulation barrier structure is arranged on the insulation support and between the electromagnetic moving contact and the electric reactance adjusting moving contact; the electric-adjusting magnetic contact and the electric-adjusting reactance moving contact are both provided with conducting strips, and the conducting strips arranged on the electric-adjusting reactance moving contact are electrically connected with the supporting flange through copper wires. The utility model discloses a high pressure moving contact utilizes moving contact bilateral symmetry distribution's characteristic, lies in the transfer reactance moving contact on insulating support and has set up insulating separation structure with the position of transferring between the electromagnetic moving contact, has increased the insulating distance of transfer reactance moving contact with transferring the electromagnetic moving contact, has improved to have to carry to transfer the reliability of holding the switch operation.
Description
Technical Field
The application relates to the technical field of tap changers, in particular to a high-voltage moving contact for a stepless on-load capacitance-regulating switch and an insulating support thereof.
Background
The on-load capacity regulating transformer is a new-technology energy-saving distribution transformer, solves the problem of large transformer loss caused by large seasonal load change amplitude of a 10kV power distribution network, and overcomes the operation and maintenance problems caused by manual capacity regulation in power failure of an unloaded capacity regulating transformer. The on-load capacity regulating transformer has two kinds of rated capacities, and the connection mode of windings is changed by using a special capacity regulating switch (namely no-excitation capacity regulation and on-load capacity regulation) according to the load, so that the switching between two different capacities of the transformer can be realized (the high-voltage side winding of the transformer is in D-connection operation when the capacity is large, and the high-voltage side winding of the transformer is in Y-connection operation when the capacity is small).
The reliability and quality of the capacitance-regulating switch directly affect the safe operation of the transformer. The capacity regulating switch of the transformer in the current market mainly comprises an insulating cylinder, a main shaft vertically arranged in the center of the insulating cylinder and a capacity regulating contact for connection; the capacity-regulating contact consists of a plurality of moving contacts and fixed contacts, wherein the moving contacts are arranged on the main shaft, the fixed contacts are arranged on the insulating cylinder, and along with the rotation of the main shaft, the moving contacts are clamped and connected with the fixed contacts, so that the capacity regulating function of the transformer is realized. The fixed contact group of the capacitance-regulating switch comprises an electromagnetic-regulating fixed contact group and an electric-regulating reactance fixed contact group; two groups of contacts are distributed on one side respectively (as shown in figure 1, wherein X1, X2, X3, X4 and X5 are set electromagnetic fixed contact groups, A1, A2, A3, A4 and A5 are set reactance fixed contact groups). When the transformer is switched in large and small capacity, when the electromagnetic moving contact is switched, the corresponding moving contact of the adjustable reactance is also switched at the same time, so that reliable insulating performance between the moving contacts of the Y connection and the D connection is required to be ensured.
Disclosure of Invention
An object of this application is to provide a high-pressure moving contact for stepless on-load capacitance-regulating switch, it is through setting up insulating support to utilize moving contact bilateral symmetry's characteristic, the position department that lies in on insulating support between the reactance moving contact of accent and the electro-magnetic contact has set up insulating barrier structure, has increased the insulating distance of transfer reactance moving contact with the electro-magnetic contact of transfer, has improved the reliability of on-load capacitance-regulating switch operation. Correspondingly, the application also provides a high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch.
For a high-voltage moving contact, the technical scheme of the application is as follows: the high-voltage moving contact for the stepless on-load capacitance-regulating switch comprises an electromagnetic moving contact and an electric reactance-regulating moving contact which are symmetrically arranged on two sides of a transmission main shaft; an insulating support is arranged on the transmission main shaft; the electromagnetic moving contact and the electric reactance adjusting moving contact are respectively fixed at the two sides of the insulating support; the transmission main shaft is fixedly connected with the insulating bracket through a supporting flange; an insulation barrier structure is arranged on the insulation support and between the electromagnetic moving contact and the electric reactance adjusting moving contact; the electric-magnetic-motion-regulating contact and the electric-reactance-regulating contact are both fixedly provided with conducting strips; the electromagnetic moving contact comprises an electromagnetic moving main contact and an electromagnetic moving auxiliary contact, and the electromagnetic moving auxiliary contact comprises an electromagnetic moving main contact and an electromagnetic moving auxiliary contact; the conducting strip arranged on the power-regulating reactance main moving contact is electrically connected with the supporting flange through a copper wire.
Compared with the prior art, the high-voltage moving contact overall structure design that is used for stepless on-load capacitance regulating switch of this application is reasonable, high durability and convenient installation, it is effectual to insulate against voltage, it is through setting up insulating support, and utilize moving contact bilateral symmetry's characteristic, the position department that lies in between the reactance regulating moving contact and the electromagnetic contact of the accent on insulating support has set up insulating barrier structure, make there are sufficient insulating distance and creepage distance between the reactance regulating moving contact and the electromagnetic contact of the accent, avoid the emergence of discharge phenomenon between the two, the insulating properties during Y connects and D connects the moving contact conversion has been strengthened, thereby ensure to have the operation of on-load capacitance regulating switch more reliable and more stable.
Preferably, the insulating barrier structure may be an arc groove or an arc rib. At the moment, the structure is simple, the insulating support can be formed through the die in one step, the manufacturing is convenient, and the cost control is facilitated.
As optimization, a resistance wire frame is respectively arranged between the electromagnetic adjusting main moving contact, the electromagnetic adjusting auxiliary moving contact, the electric resistance adjusting main moving contact and the electric resistance adjusting auxiliary moving contact and the transmission main shaft, and resistance wires are wound on the resistance wire frame; the resistance wire head is respectively connected with the corresponding electromagnetic adjusting main moving contact, the electromagnetic adjusting auxiliary moving contact, the electromagnetic adjusting main moving contact and the electromagnetic adjusting auxiliary moving contact. Therefore, the contact switching task is lighter, and the electrical service life of the electro-magnetic moving contact and the electro-reactance moving contact is prolonged.
As optimization, the adjustable electromagnetic contactor and the adjustable reactance moving contactor both comprise a base part and a contact end part; the base is fixed on the insulating support, and the contact end is used for being in contact fit with the high-voltage fixed contact.
For the insulating support, the technical scheme of this application does: the high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch comprises a support body, wherein the middle part of the support body is provided with a through hole through which a transmission main shaft can pass; grooves for placing the electromagnetic moving contact and the electric reactance adjusting moving contact are respectively formed in two sides of the support body, and fixing holes for fixing the electromagnetic moving contact and the electric reactance adjusting moving contact are formed in the grooves; and the bracket body is provided with an insulating barrier structure between the grooves on the two sides.
Compared with the prior art, the high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch has good insulating property, and the high-voltage moving contact insulating support is provided with the insulating barrier structure, so that after the reactance-regulating moving contact is installed on the insulating support along with the electromagnetic moving contact, the sufficient insulating distance and creepage distance exist between the reactance-regulating moving contact and the electromagnetic moving contact, the use reliability is high, the insulating support can be formed through a die in one step, the manufacture is convenient, and the control cost is facilitated.
Preferably, the insulating barrier structure may be an arc groove or an arc rib.
Drawings
FIG. 1 is a schematic structural diagram of a fixed contact set of a capacitance-regulating switch;
fig. 2 is a schematic structural diagram of a high-voltage moving contact for a stepless on-load capacitance-regulating switch according to the application;
fig. 3 is a schematic structural diagram of the high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch in embodiment 1;
fig. 4 is a sectional view of the insulating support of the high-voltage moving contact for the stepless load capacitance-regulating switch in fig. 3 in the direction of a;
fig. 5 is a schematic structural diagram of the high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch in embodiment 2;
fig. 6 is a B-direction sectional view of the high-voltage moving contact insulating support for the stepless load capacitance-regulating switch in fig. 5.
The labels in the figures are: 1-a transmission main shaft; 2-adjusting an electromagnetic contact, 201-adjusting an electromagnetic active contact and 202-adjusting an electromagnetic auxiliary active contact; 3-moving contact for adjusting electric resistance, 301-moving contact for adjusting electric resistance and 302-moving contact for adjusting reactance and pair; 4-insulating support, 401-support body, 4011-disc part, 4012-mounting part, 402-through hole, 403-groove and 404-fixing hole; 5-a support flange; 6-an insulating barrier structure; 7-a conductive sheet; 8-copper wire; 9-resistance wire frame.
Detailed Description
The following further describes the present application with reference to the drawings and examples, but the present application is not limited thereto.
Referring to fig. 2, the high-voltage moving contact for the stepless on-load capacitance-regulating switch of the present application includes an electromagnetic moving contact 2 and an electric reactance-regulating moving contact 3 symmetrically arranged on both sides of a transmission main shaft 1; an insulating support 4 is arranged on the transmission main shaft 1; the electromagnetic moving contact 2 and the moving contact 3 are respectively fixed at two sides of the insulating support 4; the transmission main shaft 1 is fixedly connected with an insulating support 4 through a support flange 5 (the support flange 5 can be fixedly connected with the insulating support 4 through a screw); an insulation barrier structure 6 is arranged on the insulation support 4 and between the electromagnetic moving contact 2 and the electric reactance adjusting moving contact 3 (in the embodiment, the insulation barrier structure 6 is arranged between the support flange 5 and the electromagnetic moving contact 2); the adjustable electromagnetic moving contact 2 and the adjustable reactance moving contact 3 are both provided with a conducting strip 7 (one end of the conducting strip 7 is fixed on the insulating support 4 through a screw, and the other end is fixedly connected with the adjustable electromagnetic moving contact 2 and the adjustable reactance moving contact 3 through screws); the adjustable electromagnetic moving contact 2 comprises an adjustable electromagnetic active contact 201 and an adjustable electromagnetic auxiliary moving contact 202, and the adjustable electromagnetic active contact 3 comprises an adjustable electromagnetic active contact 301 and an adjustable electromagnetic auxiliary moving contact 302; the conductive sheet 7 disposed on the reactance-adjusting active contact 301 is electrically connected with the support flange 5 through the copper wire 8 (the reactance active contact 301 is connected with the support flange 5 through the conductive sheet 7 and the copper wire 8 to form an equipotential).
The insulation barrier structure 6 is an arc groove or an arc convex rib. At the moment, the structure is simple, the insulating support can be formed through the die in one step, the manufacturing is convenient, and the cost control is facilitated.
A resistance wire frame 9 (namely the number of the resistance wire frames 9 is 4 and is fixed on the insulating support 4) is respectively arranged between the electromagnetic adjusting active contact 201, the electromagnetic adjusting auxiliary moving contact 202, the electromagnetic adjusting active contact 301 and the electromagnetic adjusting auxiliary moving contact 302 and the transmission main shaft 1, and resistance wires are wound on the resistance wire frame 9; the first position of the resistance wire is respectively connected with the corresponding active contact 201 of the adjustable electromagnetism, the active contact 202 of the adjustable electromagnetism, the active contact 301 of the adjustable reactance and the active contact 302 of the adjustable reactance. Therefore, the contact switching task is lighter, and the electrical service life of the electro-magnetic moving contact 2 and the electro-reactance moving contact 3 is prolonged.
The adjustable electromagnetic moving contact 2 and the adjustable reactance moving contact 3 both comprise a base part and a contact end part; the base part is fixed on the insulating support 4, and the contact end part is used for being in contact fit with the high-voltage fixed contact. The base part is provided with a fixing hole for fixing, which corresponds to the fixing hole 404 on the insulating bracket 4; when the electromagnetic contactor is installed, pins can sequentially penetrate through the fixing holes in the base and the fixing holes 404 in the insulating support 4, the electromagnetic moving contact 2 and the electric reactance adjusting moving contact 3 are fixed on the insulating support 4, and the assembly is convenient. The contact end part comprises a middle section and two outer side sections positioned on two sides of the middle section, and the middle section and the two outer side sections are fixed through welding; the middle section is made of pure copper materials, and the outer side section is made of tungsten-copper alloy materials. Therefore, the arc quenching capacity of the stepless on-load capacitance-regulating switch can be improved, and the arc discharge time can be shortened.
Referring to fig. 3 to 6, the high-voltage moving contact insulating support for the stepless on-load capacitance-regulating switch of the present application includes a support body 401, and a through hole 402 through which the transmission main shaft 1 can pass is formed in the middle of the support body 401; two sides of the bracket body 401 are respectively provided with a groove 403 (two grooves 403 are respectively arranged on two sides, wherein the two grooves 403 on one side are respectively used for placing the electromagnetic adjusting driving contact 201 and the electromagnetic adjusting auxiliary moving contact 202, the two grooves 403 on the other side are respectively used for placing the electromagnetic adjusting driving contact 301 and the electromagnetic adjusting auxiliary moving contact 302, and a fixing hole 404 for fixing the electromagnetic adjusting driving contact 2 and the electromagnetic adjusting moving contact 3 is arranged in each groove 403; and an insulating barrier structure 6 is arranged on the bracket body 401 and between the grooves 403 on the two sides.
The bracket body 401 comprises a disc part 4011 and two mounting parts 4012 positioned on two sides of the disc part 4011; the through hole 402 and the insulating barrier structure 6 are arranged on the disc part 4011, and the groove 403 is arranged on the mounting part 4012; on disc portion 4011, along through-hole 402 circumference evenly distributed have 3 mounting holes that are used for fixed stay flange 5, on two installation departments 4012, all be equipped with 2 mounting holes that are used for fixed conducting strip 7.
Example 1:
referring to fig. 3 and 4, in the present embodiment, the insulating barrier 6 is an arc groove.
Example 2:
referring to fig. 5 and 6, in the present embodiment, the insulating barrier structures 6 are circular-arc convex ribs.
The above general description of the invention and the description of its specific embodiments in this application should not be construed as limiting the scope of the invention. Those skilled in the art can add, reduce or combine the technical features disclosed in the general description and/or the specific embodiments (including the examples) to form other technical solutions within the scope of the present application according to the disclosure of the present application without departing from the components of the present invention.
Claims (8)
1. The high-voltage moving contact for the stepless on-load capacitance-regulating switch comprises an electromagnetic moving contact (2) and an electric reactance-regulating moving contact (3) which are symmetrically arranged on two sides of a transmission main shaft (1); the method is characterized in that: an insulating support (4) is arranged on the transmission main shaft (1); the electromagnetic moving contact (2) and the moving contact (3) with adjustable electric resistance are respectively fixed at the two sides of the insulating support (4); the transmission main shaft (1) is fixedly connected with the insulating support (4) through a supporting flange (5); an insulation barrier structure (6) is arranged on the insulation support (4) and between the electromagnetic moving contact (2) and the electric reactance adjusting moving contact (3); the electromagnetic moving contact (2) and the moving contact (3) with adjustable reactance are both provided with conducting strips (7); the electromagnetic moving contact (2) comprises an electromagnetic moving contact (201) and an electromagnetic moving auxiliary contact (202), and the electromagnetic moving contact (3) comprises an electromagnetic moving main contact (301) and an electromagnetic moving auxiliary contact (302); the conducting strip (7) arranged on the power-regulating reactance main moving contact (301) is electrically connected with the supporting flange (5) through a copper wire (8).
2. A high-voltage movable contact for a stepless on-load capacitance-regulating switch according to claim 1, characterized in that: the insulation barrier structure (6) is an arc groove.
3. A high-voltage movable contact for a stepless on-load capacitance-regulating switch according to claim 1, characterized in that: the insulation barrier structure (6) is an arc convex rib.
4. A high-voltage movable contact for a stepless on-load capacitance-regulating switch according to claim 1, characterized in that: a resistance wire frame (9) is respectively arranged between the electromagnetic regulation main moving contact (201), the electromagnetic regulation auxiliary moving contact (202), the electric resistance regulation main moving contact (301), the electric resistance regulation auxiliary moving contact (302) and the transmission main shaft (1), and resistance wires are wound on the resistance wire frame (9); the resistance wire head is respectively connected with the corresponding adjustable electromagnetic active contact (201), the adjustable electromagnetic auxiliary active contact (202), the adjustable electric resistance active contact (301) and the adjustable electric resistance auxiliary active contact (302).
5. A high-voltage movable contact for a stepless on-load capacitance-regulating switch according to claim 1, characterized in that: the adjustable electromagnetic moving contact (2) and the adjustable reactance moving contact (3) both comprise a base part and a contact end part; the base part is fixed on an insulating support (4), and the contact end part is used for being in contact fit with the high-voltage fixed contact.
6. A high-pressure moving contact insulating support for stepless on-load capacitance-regulating switch, its characterized in that: the support comprises a support body (401), wherein a through hole (402) through which a transmission main shaft (1) can pass is formed in the middle of the support body (401); grooves (403) for placing the electro-magnetic dynamic contact (2) and the electric-reactance-adjusting moving contact (3) are respectively formed in two sides of the support body (401), and fixing holes (404) for fixing the electro-magnetic dynamic contact (2) and the electric-reactance-adjusting moving contact (3) are formed in the grooves (403); and an insulating barrier structure (6) is arranged between the grooves (403) on the two sides of the bracket body (401).
7. The high voltage moving contact insulating support for the stepless on-load capacitance-regulating switch according to claim 6, characterized in that: the insulation barrier structure (6) is an arc groove.
8. The high voltage moving contact insulating support for the stepless on-load capacitance-regulating switch according to claim 6, characterized in that: the insulation barrier structure (6) is an arc convex rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779268.1U CN214123730U (en) | 2021-08-02 | 2021-08-02 | High-voltage moving contact for stepless on-load capacitance-regulating switch and insulating support thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121779268.1U CN214123730U (en) | 2021-08-02 | 2021-08-02 | High-voltage moving contact for stepless on-load capacitance-regulating switch and insulating support thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214123730U true CN214123730U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121779268.1U Active CN214123730U (en) | 2021-08-02 | 2021-08-02 | High-voltage moving contact for stepless on-load capacitance-regulating switch and insulating support thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214123730U (en) |
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2021
- 2021-08-02 CN CN202121779268.1U patent/CN214123730U/en active Active
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