Valve mechanism for high-voltage vacuum power distribution device

Abstract

The utility model provides a valve mechanism for a high-voltage vacuum power distribution device, and belongs to the technical field of valve mechanisms. The problem of insufficient discharge safety caused by lack of mechanical interlocking between a moving contact and a static contact of a current underground PJG series high-voltage power distribution device is solved. Comprising an insulating door, a connecting rod pushing mechanism and a sliding rod, the connecting rod pushing mechanism and the sliding rod are connected to the two sides of the insulating door, the insulating door is arranged between a moving contact and a static contact of a circuit breaker, and the circuit breaker is arranged in a high-voltage vacuum power distribution device shell; the two sides of the insulating door are respectively sleeved on the sliding rod, and the two ends of the sliding rod are respectively fixed on the inner wall of the shell of the high-voltage vacuum power distribution device; one end of the connecting rod pushing mechanism is fixedly connected with the insulating door, and the other end of the connecting rod pushing mechanism is fixedly connected with the circuit breaker; the connecting rod pushing mechanisms on the two sides can move forwards and backwards along with the circuit breaker under the action of the sliding rods so as to push the insulating door to move upwards and fall. The vacuum circuit breaker is applied to circuit break insulation of the vacuum circuit breaker.

Description

Technical Field

[0001] The utility model provides a valve mechanism for a high-voltage vacuum power distribution device, belonging to the technical field of valve mechanisms. Background Art

[0002] The explosion-proof high-voltage vacuum power distribution device for mines is suitable for environments with explosive mixtures such as methane and coal dust in coal mines. Due to the high voltage of high-voltage switchgear, in order to ensure the personal safety of operators and maintenance personnel, there are strict requirements for some interlocks in the operation of high-voltage switchgear. However, when the moving contacts and static contacts of the current underground PJG series high-voltage power distribution device are disconnected, they only rely on the electrical gap to ensure discharge safety, lack mechanical interlocking, and the discharge safety is insufficient. Utility Model Content

[0003] In order to solve the problem of insufficient discharge safety caused by the lack of mechanical interlocking between the moving contact and the static contact of the current underground PJG series high-voltage power distribution device, the utility model proposes a method for ensuring the safety of circuit breaker disconnection by adding a valve mechanism between the moving contact and the static contact of the circuit breaker.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a valve mechanism for a high-voltage vacuum power distribution device, comprising an insulating door and a connecting rod pushing mechanism and a sliding rod connected on both sides of the insulating door, wherein the insulating door is arranged between the moving and static contacts of the circuit breaker, and the circuit breaker is arranged in a housing of the high-voltage vacuum power distribution device;

[0005] The two sides of the insulating door are respectively sleeved on the sliding rod, and the two ends of the sliding rod are respectively fixed to the inner wall of the housing of the high-voltage vacuum power distribution device;

[0006] One end of the connecting rod pushing mechanism is fixedly connected to the insulating door, and the other end of the connecting rod pushing mechanism is fixedly connected to the circuit breaker;

[0007] The connecting rod pushing mechanisms on both sides can move forward and backward with the circuit breaker under the action of the sliding rod, thereby pushing the insulating door to move up and down.

[0008] Mounting seats are fixed on both sides of the insulating door, a sliding rod is sleeved on the rear side of the mounting seat, and a connecting rod pushing mechanism is fixed on the front side of the mounting seat.

[0009] The mounting seat is a structure of a side U-shaped plate combined with a vertical plate, wherein the vertical plate is fixed on the middle section of the side U-shaped plate, and circular holes for passing the sliding rod are opened on the upper and lower protruding ends of the side U-shaped plate.

[0010] The connecting rod pushing mechanism includes a connecting rod, a rocker arm, a side fixing seat and a bushing, one end of the connecting rod is fixed on the mounting seat, the other end of the connecting rod is connected to one end of the rocker arm through a rotating shaft, the other end of the rocker arm is fixed on the side fixing seat, a bushing is also fixed on the other end of the rocker arm, the bushing is sleeved on the circuit breaker, and the side fixing seat is fixed in the shell of the high-voltage vacuum distribution device.

[0011] The top end and the bottom end of the sliding rod are respectively fixed on the support through fixing columns, and the support is fixed on the inner wall of the shell of the high-voltage vacuum power distribution device.

[0012] The support is an inverted L-shaped structure.

[0013] The insulating door is provided with a through hole for passing the moving contact of the circuit breaker.

[0014] The insulating door is provided with a circular hole corresponding to each moving contact of the circuit breaker.

[0015] A positioning bolt is fixed on the slide bar and is used to seal the static contact of the circuit breaker after the insulating door descends due to gravity.

[0016] The side U-shaped plate of the mounting seat is provided with a plurality of screw holes for achieving fixed connection between the mounting seat and the insulating door by means of bolts;

[0017] The vertical plate of the mounting seat is provided with a plurality of screw holes for connecting the connecting rods.

[0018] The beneficial effects of the utility model compared with the prior art are as follows: the valve mechanism for a high-voltage vacuum distribution device provided by the utility model improves safety by adding an insulating door between the moving and static contacts, and does not affect the normal connection of the moving and static contacts. The utility model has a simple structure, is easy to install, and is easy to use. It can also ensure mechanical insulation after the circuit breaker is powered off, thereby ensuring discharge safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of the valve mechanism of the utility model;

[0021] Figure 2 This is a schematic diagram of the installation structure of the utility model applied to a high-voltage power distribution device;

[0022] In the figure: 1 is an insulating door, 2 is a support, 3 is a fixing column, 4 is a connecting rod, 5 is a swing rod, 6 is a side fixing seat, 7 is a shaft sleeve, 8 is a sliding rod, 9 is a circuit breaker static contact, and 10 is a circuit breaker moving contact. DETAILED DESCRIPTION

[0023] like Figure 1 and2 As shown, the utility model provides a valve mechanism for a high-voltage vacuum power distribution device, which is mainly a mechanical linkage insulation device designed for the moving contact and the static contact of the circuit breaker when the high-voltage vacuum power distribution device is disconnected. It includes an insulating door 1, a connecting rod pushing mechanism on both sides and a sliding rod 8 on both sides, wherein the insulating door 1 is used as a part for isolating the moving and static contacts of the circuit breaker, and is used to isolate the moving and static contacts of the circuit breaker through the insulating door 1 when the high-voltage vacuum power distribution device is repaired, so that the door can be opened for maintenance without worry. In this embodiment, three holes for passing the moving contacts of the circuit breaker are opened on the insulating door 1, so that the three moving contacts can pass through the corresponding holes and contact with the static contacts after the circuit breaker is closed and energized, so that the moving and static contacts are connected and energized. The insulating door 1 is not limited to opening three independent through holes, and a large elliptical hole can also be opened, as long as the moving contact can pass through, or it is also possible not to open a hole, and the insulating door 1 can be used alone, and it is ensured that the size of the insulating door 1 is sufficient to make the moving and static contacts of the circuit breaker contact after it moves up, and block the static contact after it falls. Figure 1 and 2 An embodiment diagram of opening three independent circular holes is given.

[0024] The connecting rod pushing mechanisms on both sides are connected between the circuit breaker and the insulating door 1. Under the action of the sliding rod 8, the connecting rod pushing mechanism can move forward and backward with the circuit breaker, thereby pushing the insulating door 1 up and down, ensuring that the circuit breaker can be energized normally, and at the same time ensuring that the circuit breaker can effectively isolate the moving and static contacts after disconnection, thereby ensuring discharge safety.

[0025] Specifically, mounting seats are fixed on both sides of the insulating door 1, and the mounting seats are used to connect the slide bar 8 and the connecting rod pushing mechanism. In the present embodiment, the mounting seat is a structure of a side U-shaped plate combined with a vertical plate, wherein the vertical plate is fixed to the middle section of the side U-shaped plate, and circular holes for passing the slide bar 8 are provided on the upper and lower protruding ends of the side U-shaped plate. The top and bottom ends of the slide bar 8 are respectively fixed to the support 2 through the fixing column 3, and the support 2 is fixed to the inner wall of the shell of the high-voltage vacuum distribution device. In the present embodiment, the support 2 is an inverted L-shaped structure.

[0026] The connecting rod pushing mechanism includes a connecting rod 4, a rocker arm 5, a side fixing seat 6 and a sleeve 7. One end of the connecting rod 4 is fixed on the vertical plate, and the other end of the connecting rod 4 is connected to one end of the rocker arm 5 through a rotating shaft. The other end of the rocker arm 5 is fixed on the side fixing seat 6. A sleeve 7 is also fixed on the other end of the rocker arm 5. The sleeve 7 is sleeved on the circuit breaker, and the side fixing seat 6 is fixed in the shell of the high-voltage vacuum distribution device.

[0027] like Figure 2 FIG. 1 is a schematic diagram showing the valve mechanism of the utility model installed in a high-voltage vacuum power distribution device. Figure 2As shown, the support 2 is fixed to the inner wall of the housing on the side where the static contact 9 of the circuit breaker is installed by bolts, the side fixing seat 6 is fixed to the inner wall of the housing on the side where the moving contact 10 of the circuit breaker is installed by bolts, and the circuit breaker and the connecting rod pushing mechanism are connected by the shaft sleeve 7.

[0028] The principle of the utility model is as follows:

[0029] When the power-on operation is performed, the circuit breaker moves forward, and the insulating door 1 moves up through the transmission of the shaft sleeve 7, the swing rod 5, and the connecting rod 4, and the moving and static contacts are connected and energized; when the maintenance operation is performed, the circuit breaker moves backward, and the insulating door 1 drops with gravity to seal the static contact, and the door can be opened for maintenance without worry. Figure 2 The figure shows the schematic diagram of the structure of the circuit breaker moving back to seal the static contact.

[0030] A positioning bolt is also fixed on the slide bar 8, which is used to lock the lowered position of the insulating door 1 after it descends due to gravity, so that the insulating door 1 can seal the static contact.

[0031] The side U-shaped plate of the mounting seat is provided with a plurality of screw holes for fixing the mounting seat with the insulating door 1 through bolts. The vertical plate of the mounting seat is provided with a plurality of screw holes, and the installation height of the connecting rod 4 on the vertical plate can be adjusted according to the installation height of the moving and static contacts of the circuit breaker.

[0032] The utility model has a simple structure of the valve mechanism, and can realize electrical insulation between the moving and static contacts after the circuit breaker is powered off through the insulating door 1, thereby ensuring the safety of opening the door when the high-voltage vacuum power distribution device is powered off.

[0033] Regarding the specific structure of the utility model, it should be explained that the connection relationship between the various component modules adopted in the utility model is definite and feasible. Except for special instructions in the embodiments, the specific connection relationship can bring corresponding technical effects and solve the technical problems raised by the utility model without relying on the execution of corresponding software programs. The components, modules, models of specific components and the connection methods between each other appearing in the utility model, as well as the conventional use methods and expected technical effects brought about by the above-mentioned technical features, except for specific instructions, all belong to the disclosed contents in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by technical personnel in this field before the application date, or belong to the existing technologies such as conventional technologies and common knowledge in this field, and there is no need to elaborate, so that the technical solution provided in this case is clear, complete and feasible, and the corresponding physical products can be reproduced or obtained according to the technical means.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A valve mechanism for a high-voltage vacuum power distribution device, characterized in that: It comprises an insulating door (1) and a connecting rod pushing mechanism and a sliding rod (8) connected to both sides of the insulating door (1), wherein the insulating door (1) is arranged between the moving and stationary contacts of a circuit breaker, and the circuit breaker is arranged in a housing of a high-voltage vacuum power distribution device; Both sides of the insulating door (1) are respectively sleeved on the slide bar (8), and both ends of the slide bar (8) are respectively fixed to the inner wall of the housing of the high-voltage vacuum power distribution device; One end of the connecting rod pushing mechanism is fixedly connected to the insulating door (1), and the other end of the connecting rod pushing mechanism is fixedly connected to the circuit breaker; The connecting rod pushing mechanisms on both sides can move forward and backward with the circuit breaker under the action of the sliding rod (8), thereby pushing the insulating door (1) to move up and down.

2. A valve mechanism for a high-voltage vacuum power distribution device according to claim 1, characterized in that: Mounting seats are fixed on both sides of the insulating door (1), a sliding rod (8) is sleeved on the rear side of the mounting seat, and a connecting rod pushing mechanism is fixed on the front side of the mounting seat.

3. A valve mechanism for a high-voltage vacuum power distribution device according to claim 2, characterized in that: The mounting seat is a structure of a side U-shaped plate combined with a vertical plate, wherein the vertical plate is fixed to the middle section of the side U-shaped plate, and circular holes for passing the sliding rod (8) are provided on the upper and lower protruding ends of the side U-shaped plate.

4. A valve mechanism for a high-voltage vacuum power distribution device according to claim 2, characterized in that: The connecting rod pushing mechanism comprises a connecting rod (4), a swing arm (5), a side fixing seat (6) and a shaft sleeve (7); one end of the connecting rod (4) is fixed on the mounting seat; the other end of the connecting rod (4) is connected to one end of the swing arm (5) via a rotating shaft; the other end of the swing arm (5) is fixed on the side fixing seat (6); the other end of the swing arm (5) is also fixed with a shaft sleeve (7); the shaft sleeve (7) is sleeved on the circuit breaker; and the side fixing seat (6) is fixed in a housing of a high-voltage vacuum power distribution device.

5. The valve mechanism for a high-voltage vacuum power distribution device according to claim 1, characterized in that: The top and bottom ends of the sliding rod (8) are respectively fixed to a support (2) via fixing columns (3), and the support (2) is fixed to the inner wall of a shell of a high-voltage vacuum power distribution device.

6. A valve mechanism for a high-voltage vacuum power distribution device according to claim 5, characterized in that: The support (2) is an inverted L-shaped structure.

7. The valve mechanism for a high-voltage vacuum power distribution device according to claim 1, characterized in that: The insulating door (1) is provided with a through hole for passing the moving contact of the circuit breaker.

8. A valve mechanism for a high-voltage vacuum power distribution device according to claim 7, characterized in that: The insulating door (1) is provided with a circular hole corresponding to each moving contact of the circuit breaker.

9. The valve mechanism for a high-voltage vacuum power distribution device according to claim 1, characterized in that: A positioning bolt is fixed on the slide bar (8) and is used to seal the static contact of the circuit breaker after the insulating door (1) descends due to gravity.

10. The valve mechanism for a high-voltage vacuum power distribution device according to claim 4, characterized in that: A plurality of screw holes are provided on the side U-shaped plate of the mounting seat, for achieving fixed connection between the mounting seat and the insulating door (1) by means of bolts; A plurality of screw holes for connecting the connecting rod (4) are provided on the vertical plate of the mounting seat.

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