CN214958316U

CN214958316U - Ring main unit

Info

Publication number: CN214958316U
Application number: CN202120767846.3U
Authority: CN
Inventors: 李季; 张龙
Original assignee: Zhuhai Wharton Electric Co ltd
Current assignee: Zhuhai Wharton Electric Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-30
Anticipated expiration: 2031-04-14

Abstract

The utility model discloses a looped netowrk cabinet, including insulating casing and the vacuum contact switch of setting in insulating casing, the vacuum contact switch includes: a vacuum cover disposed in the insulating housing in a front-to-rear direction; the static contact is connected with the vacuum cover and connected with a first conducting strip which protrudes upwards out of the shell; the moving contact is connected with the vacuum cover in a sliding mode along the front-back direction, the moving contact is connected with a second conducting strip, the second conducting strip protrudes downwards out of the shell, and the moving contact is used for contacting with the static contact. Set up the static contact and the moving contact of vacuum contact switch along the fore-and-aft direction, with first conducting strip and second conducting strip along vertical setting for the circuit breaker can transversely install, and the break-make can be realized to the circuit breaker in the fore-and-aft direction promptly, and other circuits are connected to first conducting strip and second conducting strip in upper and lower direction, and the looped netowrk cabinet of using the circuit breaker both can reduce the height, and in addition, the second conducting strip on the circuit breaker can not cause mechanical interference, convenient to use to the removal of moving contact.

Description

Ring main unit

Technical Field

The utility model relates to a power equipment technical field, in particular to looped netowrk cabinet.

Background

The ring main unit is commonly used in an electric power system, and a circuit breaker is installed in the ring main unit.

In the prior ring main unit, because the installed circuit breaker is vertical and the on-off stroke of the moving contact of the circuit breaker is vertical, the height of the ring main unit needs to be higher, and the ring main unit which is too high is inconvenient to operate; in addition, the second conducting strip on the moving contact is also vertically connected with the load switch, and when the moving contact is moved, the second conducting strip is easily interfered.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a ring main unit, second conducting strip on the circuit breaker in the ring main unit can not interfere the moving contact removes.

According to the utility model discloses a looped netowrk cabinet of first aspect embodiment, including the cabinet body; the load switch is arranged in the cabinet body; the circuit breaker, set up in the cabinet body, the circuit breaker electricity is connected load switch, the circuit breaker includes: the vacuum contact switch is arranged in the insulating shell and comprises a vacuum cover, a fixed contact and a moving contact, wherein the vacuum cover is arranged in the insulating shell along the front-back direction, the fixed contact is connected with the vacuum cover along the front-back direction, the fixed contact is connected with a first conducting strip, and the first conducting strip protrudes out of the shell; the moving contact is connected with the vacuum cover in a sliding mode along the front-back direction, the moving contact is connected with a second conducting strip, the second conducting strip protrudes out of the shell in a downward protruding mode, and the moving contact is used for contacting the static contact.

According to the utility model discloses looped netowrk cabinet has following beneficial effect at least: the static contact and the moving contact of the vacuum contact switch are arranged along the front-back direction, the first conducting strip and the second conducting strip are arranged along the vertical direction, so that the circuit breaker can be transversely installed, namely, the circuit breaker can be switched on and off in the front-back direction, the first conducting strip and the second conducting strip are connected with other circuits in the up-down direction, the ring main unit of the circuit breaker can be used for reducing the height, and in addition, the second conducting strip on the circuit breaker cannot cause mechanical interference to the movement of the moving contact, and the use is convenient.

According to the utility model discloses a some embodiments still include insulating pull rod, the one end of insulating pull rod is connected the moving contact sets up insulating pull rod can prolong the connection position of moving contact can pass through insulating pull rod is right the pulling force is applyed to the moving contact, also can prevent that the electric current on the locking contact from passing through insulating pull rod outflow.

According to some embodiments of the utility model, be provided with the reinforcing floor on the periphery wall of insulating pull rod, set up the reinforcing floor is used for strengthening the tensile strength and the bending strength of insulating pull rod, the long service life of insulating pull rod, thereby the long service life of circuit breaker.

According to the utility model discloses a some embodiments, the second conducting strip is made by soft conducting material, and is convenient when the moving contact removes, the second conducting strip can be buckled, the pliability of second conducting strip is good, promptly the removal number of times of moving contact is many, promptly the number of times that the circuit breaker opened and closed is many, promptly the longe-lived of circuit breaker.

According to some embodiments of the utility model, soft conducting material is copper or aluminium, and is with low costs, and the source is wide.

According to the utility model discloses a some embodiments, insulating pull rod is provided with subtracts heavy chamber, sets up subtract heavy chamber and be used for reducing the weight of insulating pull rod, whole weight that can reduce the circuit breaker accomplishes the circuit breaker lightweight.

According to the utility model discloses a some embodiments still include the screwed pipe, screwed pipe threaded connection is in the other end of insulating pull rod, the inner chamber of screwed pipe is provided with the elastic component, still peg graft in the screwed pipe and link the pole outward, elastic component one end butt screwed pipe, other end butt link the pole outward, the cover is equipped with the stop collar on the link outward, be provided with the draw-in groove on the screwed pipe, be connected with the fixture block in the draw-in groove, the fixture block is used for the restriction the stop collar breaks away from the screwed pipe, the stop collar is used for the restriction the link breaks away from outward the screwed pipe, the elastic component is used for the static contact with pretightning force when the moving contact provides combined floodgate or separating brake.

According to the utility model discloses a some embodiments, the cover is equipped with the shock attenuation cover on the periphery wall of vacuum cover, sets up the shock attenuation cover can resist the moving contact is in the vibration that removes the in-process and produce.

According to some embodiments of the utility model, the shock attenuation cover is made by silicon rubber material, polyethylene material or polypropylene material, and material elasticity is good, and buffer capacity is strong.

According to some embodiments of the utility model, insulating housing is made by the fine material of nylon glass, and insulating properties is good, and intensity is high.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is the structural schematic diagram of the ring main unit according to the embodiment of the present invention.

An insulating case 100;

the vacuum contact switch 200, the vacuum cover 210, the shock-absorbing sleeve 211, the static contact 220, the first conducting strip 221, the moving contact 230 and the second conducting strip 231;

the insulation pull rod 300, the reinforcing rib plate 310 and the weight-reducing cavity 320;

the device comprises a threaded pipe 400, an elastic element 410, an external connecting pull rod 420, a limiting sleeve 421, a clamping groove 430 and a clamping block 431.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 3, a ring main unit includes a main body 500; a load switch 600 disposed in the cabinet 500; the circuit breaker sets up in the cabinet body, and load switch is connected to the circuit breaker electricity, and the circuit breaker includes: the vacuum contact switch 200 is arranged in the insulating shell 100, the vacuum contact switch 200 comprises a vacuum cover 210, a fixed contact 220 and a movable contact 230, the vacuum cover 210 is arranged in the insulating shell 100 along the front-back direction, the fixed contact 220 is connected with the vacuum cover 210 along the front-back direction, the fixed contact 220 is connected with a first conducting strip 221, and the first conducting strip 221 protrudes upwards and extends out of the shell; the movable contact 230 is slidably connected to the vacuum housing 210 along the front-back direction, the movable contact 230 is connected to a second conductive sheet 231, the second conductive sheet 231 protrudes downward out of the housing, and the movable contact 230 is used for contacting the stationary contact 220. Set up the static contact 220 and the moving contact 230 of vacuum contact switch 200 along the fore-and-aft direction, with first conducting strip 221 and second conducting strip 231 along vertical setting, make the circuit breaker can transversely install, the circuit breaker can realize the break-make in the fore-and-aft direction promptly, and other circuits are connected to first conducting strip 221 and second conducting strip 231 in upper and lower direction, the looped netowrk cabinet of using the circuit breaker both can reduce the height, in addition, second conducting strip 231 on the circuit breaker can not cause mechanical interference to the removal of moving contact 230, high durability and convenient use. It can be understood that the conventional circuit breaker is opened and closed in a vertical direction, that is, the movable contact 230 contacts the fixed contact 220 in a vertical direction.

In some embodiments, the insulating pull rod 300 is further included, and one end of the insulating pull rod 300 is connected to the insulating pull rod 300 disposed on the movable contact 230, so that the connection portion of the movable contact 230 can be extended, and not only can a pulling force be applied to the movable contact 230 through the insulating pull rod 300, but also the current on the movable contact 230 can be prevented from flowing out through the insulating pull rod 300. It is understood that the insulating tie 300 may block the current on the movable contact 230.

In some embodiments, the outer circumferential wall of the insulating rod 300 is provided with the reinforcing rib 310, the reinforcing rib 310 is provided to reinforce the tensile strength and the bending strength of the insulating rod 300, the service life of the insulating rod 300 is long, and thus the service life of the circuit breaker is long.

In some embodiments, the second conductive sheet 231 is made of a soft conductive material, so that when the movable contact 230 moves, the second conductive sheet 231 can be bent, and the flexibility of the second conductive sheet 231 is good, that is, the number of times of movement of the movable contact 230 is large, that is, the number of times of opening and closing of the circuit breaker is large, that is, the service life of the circuit breaker is long.

In some embodiments, the soft conductive material is copper or aluminum, which is low in cost and widely available.

In some embodiments, the insulating pull rod 300 is provided with a weight reduction cavity 320, and the weight reduction cavity 320 is arranged to reduce the weight of the insulating pull rod 300, so that the weight of the circuit breaker can be reduced as a whole, and the light weight of the circuit breaker can be achieved.

In some embodiments, the device further includes a threaded pipe 400, the threaded pipe 400 is screwed to the other end of the insulating pull rod 300, an elastic member 410 is disposed in an inner cavity of the threaded pipe 400, an external connection pull rod 420 is further inserted into the threaded pipe 400, one end of the elastic member 410 abuts against the threaded pipe 400, the other end of the elastic member abuts against the external connection pull rod 420, a limiting sleeve 421 is sleeved on the external connection pull rod 420, a clamping groove 430 is disposed on the threaded pipe 400, a clamping block 431 is connected in the clamping groove 430, the clamping block 431 is used for limiting the limiting sleeve 421 to be separated from the threaded pipe 400, the limiting sleeve 421 is used for limiting the external connection pull rod 420 to be separated from the threaded pipe 400, and the elastic member 410 is used for providing pre-tightening force for the static contact 220 and the moving contact 230 during closing or opening.

In some embodiments, the outer peripheral wall of the vacuum enclosure 210 is sleeved with a damping sleeve 211, and the damping sleeve 211 is configured to resist the vibration generated by the movable contact 230 during the moving process.

In some embodiments, the damping sleeve 211 is made of a silicon rubber material, a polyethylene material or a polypropylene material, and the material has good elasticity and strong damping capacity.

In some embodiments, the insulating housing 100 is made of nylon fiberglass material, and has good insulating property and high strength.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A ring main unit, comprising:

a cabinet body;

the load switch is arranged in the cabinet body;

the circuit breaker, set up in the cabinet body, the circuit breaker electricity is connected load switch, the circuit breaker includes:

insulating shell

The vacuum contact switch is arranged in the insulating shell and comprises a vacuum cover, a static contact and a moving contact, wherein the vacuum cover is arranged in the insulating shell along the front-back direction, the static contact is connected with the vacuum cover along the front-back direction, the static contact is connected with a first conducting strip, and the first conducting strip protrudes out of the shell upwards; the moving contact is connected with the vacuum cover in a sliding mode along the front-back direction, the moving contact is connected with a second conducting strip, the second conducting strip protrudes out of the shell in a downward protruding mode, and the moving contact is used for contacting the static contact.

2. The ring main unit according to claim 1, wherein: the device also comprises an insulating pull rod, and one end of the insulating pull rod is connected with the moving contact.

3. The ring main unit according to claim 2, wherein: and a reinforcing rib plate is arranged on the peripheral wall of the insulating pull rod.

4. The ring main unit according to claim 3, wherein: the second conducting strip is made of soft conducting materials.

5. The ring main unit according to claim 4, wherein: the soft conductive material is copper or aluminum.

6. The ring main unit according to any one of claims 2 to 5, wherein: the insulating pull rod is provided with a weight reduction cavity.

7. The ring main unit according to claim 6, wherein: the insulating pull rod is connected with the fixed contact through a screw, the fixed contact is connected with the movable contact through a screw, the fixed contact is connected with the fixed contact through a screw, the movable contact is connected with the fixed contact through a screw, and the fixed contact is connected with the fixed contact through a screw.

8. The ring main unit according to claim 1, wherein: the periphery wall of the vacuum cover is sleeved with a damping sleeve.

9. The ring main unit according to claim 8, wherein: the shock-absorbing sleeve is made of a silicon rubber material, a polyethylene material or a polypropylene material.

10. The ring main unit according to claim 1, wherein: the insulating shell is made of a nylon glass fiber material.