CN211507493U

CN211507493U - Totally enclosed outdoor on-post isolator

Info

Publication number: CN211507493U
Application number: CN202020404515.9U
Authority: CN
Inventors: 宋艳阳; 代利; 孟繁春; 王志鹏; 常丽丽; 郝鹤; 高洋; 耿建宇; 魏来
Original assignee: State Grid Jilin Electric Power Corp
Current assignee: State Grid Jilin Electric Power Corp
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-09-15
Anticipated expiration: 2030-03-26

Abstract

The utility model discloses a isolator on totally enclosed outdoor post belongs to electrical equipment technical field. The switch comprises a switch box body, an operation main shaft, a sealing bearing, a switching-on/off handle and a switching-on/off pointer; the switch box body is provided with a wire inlet and outlet sleeve, and the switch box body is internally provided with a moving contact and a static contact; the operating main shaft penetrates through the end faces of the sealing bearing and the switch box body and extends into the switch box body, and one end, located outside the switch box body, of the operating main shaft is fixedly connected with a switching-on/off handle and a switching-on/off pointer; the moving contact is fixedly connected with the operating main shaft; the moving contact and the static contact are respectively electrically connected with a cable passing through the wire inlet and outlet sleeve. Through the arrangement of the switch box body, the conductive parts of the switch are completely insulated and sealed, so that the dustproof and rainproof performance is realized, and the damage of freezing, rain and snow is particularly avoided; the structure is simple, the operation is simple, less maintenance or maintenance-free can be realized, and a powerful guarantee is provided for the safe operation of the power grid.

Description

Totally enclosed outdoor on-post isolator

Technical Field

The utility model belongs to the technical field of electrical equipment, especially, involve a isolator on totally enclosed outdoor post.

Background

With the rapid development of urbanization and economy, the appearance of urban and rural blocks is continuously improved, the demand for basic energy, namely electric power, is increasing day by day, and the safe and stable operation of a power grid and the reasonable erection and planning of the power grid are highly emphasized. The cable connection between the power distribution stations mainly comprises an overhead type cable connection circuit and an underground laying type cable connection circuit, wherein the overhead type cable connection circuit mainly adopts an on-column switch, and the underground laying type cable connection circuit mainly adopts an indoor high-voltage switch.

The pole-mounted switch is connected with the cable generally by adopting an exposed wiring terminal or a special equipment wire clamp, and is wrapped by a special insulating sheath to increase the surface insulation and the rainproof performance of the phase or the opposite ground. The conventional aerial cable generally adopts the bare aluminum conductor steel reinforced, but with the improvement of the cable manufacturing process, the cable used in some people-intensive or mountain forests is changed into the fully insulated aluminum conductor steel reinforced, so that the attention of people to the safety electricity utilization of the power grid is high.

The pole-mounted switch generally adopts a double-rod mounting mode, namely: two cement poles are pre-buried, then a column switch platform is erected between the cement poles through channel steel, the position of the lower face of the channel steel is limited through a pair of anchor ears, and incoming and outgoing cables of the column switch are erected along the cement poles.

The pole-mounted switch is mainly divided into a closed type and an open type, a general pole-mounted circuit breaker and a pole-mounted load switch are closed, and a pole-mounted isolating switch is open, so that the isolating switch is large in size, poor in dustproof and rainproof performance, incapable of avoiding damage of freezing, rain and snow, and high in operation and maintenance cost of a power grid due to the fact that conductive parts such as a moving contact and a static contact of the switch are easily corroded in acid-base or humid environments.

Therefore, there is a need in the art for a new solution to solve this problem.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art: the utility model provides a isolator on totally enclosed outdoor post for solve traditional isolator dustproof, rain proofness can be relatively poor, electrically conductive spare part receives the problem of corruption easily under acid-base or humid environment.

In order to realize the purpose, the utility model discloses a technical scheme is: a fully-sealed outdoor pole-mounted isolating switch comprises a switch box body, an operating main shaft, a sealing bearing, a switching-on/off handle and a switching-on/off pointer; the switch box body is provided with a wire inlet and outlet sleeve, and the switch box body is internally provided with a moving contact and a static contact; the operating main shaft penetrates through the end faces of the sealing bearing and the switch box body and extends into the switch box body, and one end, located outside the switch box body, of the operating main shaft is fixedly connected with a switching-on/off handle and a switching-on/off pointer; the moving contact is fixedly connected with the operating main shaft; the moving contact and the static contact are respectively electrically connected with a cable passing through the wire inlet and outlet sleeve.

A strut insulator is arranged on the inner surface of the switch box body; a copper bar is fixed on the strut insulator; one end of the copper bar is electrically connected with a cable passing through the wire inlet and outlet sleeve, and the other end of the copper bar is electrically connected with the moving contact through a flexible conductor.

The wire inlet and outlet sleeves are a plurality of groups, and each group of wire inlet and outlet sleeves corresponds to one group of moving contacts and static contacts; the moving contacts are arranged at intervals along the operating main shaft, and corrugated insulating spacer bushes are arranged between the moving contacts.

A power-assisted mechanism is arranged between the switching-on/off handle and the switch box body; the boosting mechanism comprises an eccentric shaft sleeve, a spring and a spring seat; the eccentric shaft sleeve is fixedly connected to the operating main shaft, and a spring is connected between the eccentric shaft sleeve and the spring seat.

The boosting mechanism is arranged in the sealed boosting mechanism box body.

And the outer surface of the power-assisted mechanism box body is provided with a brake opening mark and a brake closing mark towards the side of the brake closing pointer.

And pull rings are arranged at two ends of the switching-on/off handle.

The shell of the wire inlet and outlet sleeve is an epoxy resin shell.

The operating main shaft is made of epoxy resin composite insulating materials.

Through the above design scheme, the utility model discloses following beneficial effect can be brought:

1. the switch conducting parts are fully insulated and sealed, so that the dustproof and rainproof performance is realized, and the damage of freezing, rain and snow is particularly avoided;

2. the volume of the isolating switch is greatly reduced;

3. the possibility of interphase short circuit is reduced, and an effective scheme is provided for realizing less maintenance and even free maintenance of power grid operation and maintenance;

drawings

Fig. 1 is a schematic front view of the fully-sealed outdoor on-post disconnecting switch of the present invention.

Fig. 2 is a C-direction side view of the fully-sealed outdoor pole-mounted isolating switch of the present invention.

Fig. 3 is a B-B sectional view of the fully-sealed outdoor pole-mounted isolating switch of the present invention.

Fig. 4 is a sectional view of the isolating switch on the totally-enclosed outdoor column according to the present invention.

In the figure, 1-a switch box body, 101-an incoming and outgoing line sleeve, 102-a moving contact, 103-a static contact, 104-a strut type insulator, 105-a copper bar, 106-a flexible conductor, 2-an operating main shaft, 201-a corrugated insulating spacer bush, 3-a sealing bearing, 4-an opening and closing handle, 5-an opening and closing pointer, 6-a cable, 7-an assisting mechanism, 701-an eccentric shaft sleeve, 702-a spring, 703-a spring seat, 8-an assisting mechanism box body, 9-an opening mark, 10-a closing mark, 11-a cement rod, 12-channel steel and 13-a hoop are included.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings

It should be noted that, the terms "front and back, up and down, left and right" and the like in the text are only simplified terms for visually describing the positional relationship based on the drawings, and do not limit the technical solution.

Shown in attached figures 1-4: a totally-enclosed outdoor pole-mounted isolating switch comprises a switch box body 1, an operating main shaft 2, a sealed bearing 3, a switching-on/off handle 4 and a switching-on/off pointer 5; the switch box body 1 is provided with an incoming and outgoing line sleeve 101, and the switch box body 1 is internally provided with a moving contact 102 and a fixed contact 103; the operating main shaft 2 penetrates through the sealing bearing 3 and the end face of the switch box body 1 and extends into the switch box body 1, and one end, located outside the switch box body 1, of the operating main shaft 2 is fixedly connected with an opening and closing handle 4 and an opening and closing pointer 5; the moving contact 102 is fixedly connected to the operating main shaft 2; the moving contact 102 and the static contact 103 are electrically connected with the cable 6 passing through the in-out bushing 101 respectively. Through the arrangement of the switch box body 1, the conductive parts of the switch are completely insulated and sealed, so that the dustproof and rainproof performance is realized, and the damage of freezing, rain and snow is particularly avoided; the structure is simple, the operation is simple, less maintenance or maintenance-free can be realized, and a powerful guarantee is provided for the safe operation of the power grid.

In order to make the structure more compact, a pillar insulator 104 is arranged on the inner surface of the switch box body 1; a copper bar 105 is fixed on the pillar insulator 104; one end of the copper bar 105 is electrically connected with the cable 6 passing through the wire inlet and outlet bushing 101, and the other end of the copper bar 105 is electrically connected with the movable contact 102 through the flexible conductor 106. The pillar insulator 104 provides a supporting insulator for the copper bar 105; the copper bar 105 is a rigid conductor for conducting current; flexible conductor 106 can move with the rotation of movable contact 15;

the in-out bushings 101 are a plurality of groups, and each group of in-out bushings 101 corresponds to one group of moving contacts 102 and static contacts 103; the moving contacts 102 are arranged at intervals along the operating main shaft 2, and corrugated insulating spacer bushes 201 are arranged between the moving contacts. The corrugated insulating spacer 201 is an insulating sheath designed for increasing the insulation creepage distance between the moving contact 102 and the ground, is cast and molded by silicon rubber or ethylene propylene diene monomer, and has aging resistance and good insulating property; this application greatly reduces the size of the disconnector.

A power-assisted mechanism 7 is arranged between the switching-on/off handle 4 and the switch box body 1; the boosting mechanism 7 comprises an eccentric shaft sleeve 701, a spring 702 and a spring seat 703; the eccentric shaft sleeve 701 is fixedly connected to the operating main shaft 2, and a spring 702 is connected between the eccentric shaft sleeve 701 and the spring seat 703. The power-assisted spring mechanism is a spring mechanism for eccentrically operating a main shaft, a spring is compressed and deformed when a brake opening and closing handle is pulled, and the pressure of the spring is released after the spring passes through the central line of the mechanism, so that the rapid brake opening and closing can be realized;

the power-assisted mechanism 7 is arranged in the sealed power-assisted mechanism box body 8, so that the rainproof and dustproof effects are better.

And an opening mark 9 and a closing mark 10 are arranged on one side of the outer surface of the power-assisted mechanism box body 8, which faces the opening and closing pointer 5. The switching-off identification and the switching-on identification provide switching-on and switching-off state indication identifications for people to observe; the switching-on and switching-off pointer is connected with the operating main shaft and synchronously moves with a moving contact in the switch box body, so that the state of the switch can be reflected, and the switching-on and switching-off pointer points to a switching-on identifier or a switching-off identifier;

and pull rings are arranged at two ends of the switching-on/off handle 4. Personnel can stand under the cement rod, pull rings at two ends of the handle are pulled by using the insulating rod, the anticlockwise rotation is switching-off operation, and the clockwise rotation is switching-on operation;

the casing of the in-out casing 101 is an epoxy casing. The wire inlet and outlet sleeve is a current terminal for connecting the overhead cable and a switch component in the switch box body, and an epoxy resin shell for increasing creepage distance is adopted, so that the weather-proof capability is strong, and the insulating property is good.

The operating main shaft 2 is made of epoxy resin composite insulating materials. The operation main shaft is a rigid main shaft for driving the movable contact to rotate, is made of epoxy resin composite insulating materials, and is high in strength and good in insulating property.

The switch box body 1 and the power assisting mechanism box body 8 can be filled with dry air or nitrogen.

It is obvious that the above-described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. The utility model provides a isolator on totally enclosed outdoor post which characterized in that: the device comprises a switch box body (1), an operation main shaft (2), a sealing bearing (3), a switching-on/off handle (4) and a switching-on/off pointer (5); the switch box body (1) is provided with an incoming and outgoing line sleeve (101), and the switch box body (1) is internally provided with a moving contact (102) and a static contact (103); the operating main shaft (2) penetrates through the end faces of the sealing bearing (3) and the switch box body (1) and extends into the switch box body (1), and one end, located outside the switch box body (1), of the operating main shaft (2) is fixedly connected with a switching-on/off handle (4) and a switching-on/off pointer (5); the moving contact (102) is fixedly connected to the operating main shaft (2); the moving contact (102) and the static contact (103) are respectively electrically connected with a cable (6) passing through the wire inlet and outlet sleeve (101).

2. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: a pillar insulator (104) is arranged on the inner surface of the switch box body (1); a copper bar (105) is fixed on the column insulator (104); one end of the copper bar (105) is electrically connected with the cable (6) passing through the wire inlet and outlet sleeve (101), and the other end of the copper bar (105) is electrically connected with the moving contact (102) through the flexible conductor (106).

3. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: the incoming and outgoing line sleeves (101) are in a plurality of groups, and each group of incoming and outgoing line sleeve (101) corresponds to one group of moving contact (102) and static contact (103); the moving contacts (102) are arranged at intervals along the operating main shaft (2), and corrugated insulating spacer bushes (201) are arranged between the moving contacts.

4. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: a power-assisted mechanism (7) is arranged between the switching-on/off handle (4) and the switch box body (1); the boosting mechanism (7) comprises an eccentric shaft sleeve (701), a spring (702) and a spring seat (703); the eccentric shaft sleeve (701) is fixedly connected to the operation main shaft (2), and a spring (702) is connected between the eccentric shaft sleeve (701) and the spring seat (703).

5. The totally enclosed outdoor pole-mounted disconnector according to claim 4, wherein: the power-assisted mechanism (7) is arranged in a sealed power-assisted mechanism box body (8).

6. The totally enclosed outdoor pole-mounted disconnector according to claim 5, wherein: and an opening mark (9) and a closing mark (10) are arranged on one side of the outer surface of the power-assisted mechanism box body (8) facing the opening and closing pointer (5).

7. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: and pull rings are arranged at two ends of the switching-on/off handle (4).

8. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: the shell of the wire inlet and outlet sleeve (101) is an epoxy resin shell.

9. The fully-sealed outdoor pole-mounted isolating switch according to claim 1, wherein: the operating main shaft (2) is made of epoxy resin composite insulating materials.