A disconnecting switch anti-icing device

Abstract

The present application relates to a kind of disconnecting switch anti-icing device, including mutually matched movable contact, static contact;The movable contact has a pair, and is installed on a conducting arm, and two movable contacts are driven by conducting arm to approach or away from static contact, to realize opening and closing;Conducting arm is installed with movable contact on one side also be provided with anti-icing component, the anti-icing component includes a support plate and a pair of anti-icing baffle, the side of two anti-icing baffles is respectively hinged on conducting arm, and two anti-icing baffles are V-shaped distribution, the other side of two anti-icing baffles is swung under the impetus of support plate, realize opening or folding.This anti-icing device of the present application, when disconnecting switch opens, two anti-icing baffles are folded with movable contact opening, cover movable contact, so that ice does not form in the contact surface of movable contact and static contact, when disconnecting switch closes, anti-icing baffle is opened with movable contact folding, so that movable contact is exposed and can be smoothly closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of disconnectors, in particular to a disconnector anti-icing device. BACKGROUND

[0002] The disconnector is a kind of switch device mainly used for "isolating power, switching operation, connecting and cutting off small current circuit", without arc extinguishing function. When the disconnector is in the open position, there is a specified insulation distance and obvious disconnecting mark between the contacts; when the disconnector is in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. Generally used as high-voltage disconnector, i.e. disconnector with rated voltage above 1kV. The working principle and structure of the disconnector are relatively simple, but due to its large quantity of use and high reliability requirement, it has great influence on the design, establishment and safe operation of the substation and power plant.

[0003] At present, the disconnector with pincer type movable contact is widely used in substations all over the world. With global warming, extreme weather is becoming more and more frequent. The conventional disconnector with pincer type movable contact generally does not have ice breaking capability. In severe icing conditions, the disconnector may not be closed to the position due to the influence of ice layer, thereby causing the movable contact and the static contact to be burned, and further affecting the safe operation of the entire power grid. Such disconnector inevitably threatens the safety of the substation. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a disconnector anti-icing device to solve the problem that the movable contact of the vertical telescopic disconnector with pincer type movable contact cannot be closed to the position after icing.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows: a telescopic transportation beam, which is characterized by comprising a movable contact and a static contact cooperating with each other.

[0006] The movable contact has a pair of movable contacts installed on a conductive arm, and the two movable contacts are driven by the conductive arm to approach or move away from the static contact, thereby realizing opening and closing. The two movable contacts are installed at the end of the conductive arm and are driven by the movable contact pull rod installed on the conductive arm to approach or move away from each other, thereby clamping or releasing the static contact.

[0007] An anti-icing assembly is further provided on the side of the conductive arm where the movable contact is installed. The anti-icing assembly comprises a support plate and a pair of anti-icing baffles. One side of each of the two anti-icing baffles is hinged to the conductive arm, and the two anti-icing baffles are distributed in a V shape. The other side of each of the two anti-icing baffles is swung under the pushing of the support plate, thereby realizing opening or closing.

[0008] Further, the cooperation between the anti-icing baffle and the support plate is that the two sides of the support plate are connected with the anti-icing baffle through cooperation of a pull rod, one side of the pull rod is hinged with the support plate, and the other side is hinged with the anti-icing baffle, the support plate is driven to move by the dynamic contact pull rod installed on the conductive arm, and then the opening or closing of the two anti-icing baffles is realized.

[0009] Further, the hinged cooperation between the anti-icing baffle and the pull rod is that the anti-icing baffle is hinged with the pull rod through cooperation of a pin shaft, one side of the pin shaft is fixed with the pull rod, and the pin shaft and the pull rod are connected to form a 7-shaped or L-shaped structure, a through hole through which the pin shaft passes is formed on the anti-icing baffle, and the other side of the pin shaft passes through the through hole on the anti-icing baffle and is fixed through a locking pin.

[0010] Further, the through hole on the anti-icing baffle is a waist-shaped hole.

[0011] Further, the side edges of the two anti-icing baffles adjacent to each other are inclined, and the inclined direction of the inclined edge is gradually inclined away from the other anti-icing baffle from the side of the anti-icing baffle hinged with the conductive arm.

[0012] The advantages of the anti-icing device of the application are that when the disconnecting switch is opened, the two anti-icing baffles are closed with the opening of the dynamic contact, covering the dynamic contact, so that ice cannot be formed on the contact surface of the dynamic contact and the static contact, and when the disconnecting switch is closed, the anti-icing baffles are opened with the closing of the dynamic contact, so that the dynamic contact is exposed and can be smoothly closed, which not only does not affect the smooth opening and closing of the disconnecting switch, but also protects the dynamic contact and the static contact.

[0013] For the action of the support plate, the dynamic contact pull rod driven by the disconnecting switch itself is used to realize the action, without the need of additionally arranging a driving member, so that the structure is simplified, and the dynamic contact can be cooperated to realize synchronous action during opening and closing, without the need of additionally arranging a detection switch and other components to realize the synchronous action of the anti-icing baffle and the dynamic contact, so that the structure is simpler.

[0014] The disconnecting switch anti-icing device of the application can be applied to the disconnecting switch with vertically telescopic and pincer-type dynamic contact, and has the advantages of simple structure, reliable work, and convenience for increasing and installing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the disconnecting switch anti-icing device of the application.

[0016] Figure 2 It is an installation schematic diagram of the disconnecting switch anti-icing device of the application. DETAILED DESCRIPTION

[0017] To further clarify the technical means and effects taken by the present application to achieve the predetermined inventive purpose and its effects, the following describes in detail the specific embodiments, structures, features and effects of the present application in combination with the accompanying drawings and preferred embodiments.

[0018] As shown in Figure 1 , Figure 2 , the device for preventing the isolation switch from icing over comprises a movable contact 7 and a static contact.

[0019] The movable contact 7 is in pairs and is installed on a conductive arm 6, and the two movable contacts 7 are driven by the conductive arm 6 to approach or move away from the static contact, thereby realizing the opening and closing of the switch. The two movable contacts 7 are installed at the end of the conductive arm 6 and are driven by the movable contact pull rod 5 installed on the conductive arm 6 to approach or move away from each other, thereby clamping or releasing the static contact. The structure and action principle of the movable contact 7 and the static contact for realizing the opening and closing of the switch are conventional technology, and will not be described in detail in this embodiment.

[0020] A device for preventing the isolation switch from icing over is also provided on the side of the conductive arm 6 where the movable contact 7 is installed. The device for preventing the isolation switch from icing over comprises a support plate 2 and a pair of anti-icing baffles 1. One side of each of the two anti-icing baffles 1 is hingedly connected to the conductive arm 6, and the two anti-icing baffles 1 are arranged in a V shape. The other side of each of the two anti-icing baffles 1 is driven by the support plate 2 to swing, thereby opening or closing.

[0021] The cooperation between the anti-icing baffle 1 and the support plate 2 is as follows: the support plate 2 is a long strip plate, and the two sides of the long axis of the support plate 2 are connected to the anti-icing baffles 1 through the cooperation of a pull rod 3. One side of the pull rod 3 is hingedly connected to the support plate 2, and the other side of the pull rod 3 is hingedly connected to the anti-icing baffle 1. The support plate 2 is synchronously driven by the movable contact pull rod 5 installed on the conductive arm 6 to move, thereby realizing the opening or closing of the two anti-icing baffles 1.

[0022] The hinged cooperation between the anti-icing baffle 1 and the pull rod 3 is as follows: the anti-icing baffle 1 and the pull rod 3 are hingedly connected through the cooperation of a pin shaft 4. One side of the pin shaft 4 is fixed to the pull rod 3, and the pin shaft 4 and the pull rod 3 form a 7-shaped or L-shaped structure. A through hole is formed in the anti-icing baffle 1 for the pin shaft 4 to pass through. The other side of the pin shaft 4 passes through the through hole in the anti-icing baffle 1 and is fixed by a locking pin.

[0023] The through hole in the anti-icing baffle 1 is a waist-shaped hole, so that the pin shaft 4 can rotate within a certain range, facilitating the swinging of the anti-icing baffle 1 and thereby protecting the movable contact.

[0024] The side edges of the two anti-icing baffles 1 adjacent to each other are both inclined, and the inclined direction of the inclined edges is gradually inclined away from the other anti-icing baffle 1 from the side of the anti-icing baffle 1 hingedly connected to the conductive arm 6.

[0025] Working principle: in the closing process, the movable contact pull rod 5 pushes the contact 7 upward to clamp inward, at this time the anti-icing baffle 1 moves upward, pushes the pull rod 3 to move upward, the pin shaft 4 on the pull rod 3 moves in the waist-shaped hole of the anti-icing baffle 1 for a distance to push the anti-icing baffle 1 apart, so that the movable contact 7 can contact the static contact and clamp, and the anti-icing baffle 1 does not contact the static contact, when opening, the movable contact pull rod 5 pulls the movable contact 7 downward to separate, at this time the anti-icing baffle 1 moves downward, pulls the pull rod 3 to move downward, the pin shaft 4 on the pull rod 3 moves in the waist-shaped hole of the anti-icing baffle 1 for a distance to pull the anti-icing baffle 1 together, so that the ice layer cannot be formed on the contact surface of the movable contact 7 and the static contact when icing, thereby eliminating the phenomenon of icing on the surface of the movable contact 7.

[0026] The anti-icing device of the application can be applied to the disconnecting switch with vertically retractable pincer-type movable contacts, and has the advantages of simple structure, reliable work, easy modification and installation, and good protection of the movable contact and the static contact.

[0027] The disconnecting switch anti-icing device of the application can be applied to the disconnecting switch with vertically retractable pincer-type movable contacts, and has the advantages of simple structure, reliable work, easy modification and installation, and good protection of the movable contact and the static contact.

[0028] The above description is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the application. Any modification, change, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the application, are still within the scope of the technical solution of the application.

Claims

1. A device for preventing icing of a disconnector, characterized in that: The moving contact, the stationary contact, and the insulating support are cooperated with each other. The moving contact has a pair of moving contacts installed on the conducting arm, and the two moving contacts are driven to approach or move away from the stationary contact by the conducting arm, so as to realize the opening and closing of the circuit breaker. The conducting arm is provided with an anti-icing assembly on the side where the moving contact is installed, and the anti-icing assembly comprises a support plate and a pair of anti-icing baffles.

2. The isolating switch anti-icing device according to claim 1, characterized in that: The support plate is connected to the anti-icing baffles through a pull rod on both sides, one side of the pull rod is hinged to the support plate, and the other side is hinged to the anti-icing baffles.

3. The isolating switch anti-icing device according to claim 2, characterized in that: The anti-icing baffles are hinged to the pull rod through a pin shaft, one side of the pin shaft is fixed to the pull rod, and the pin shaft and the pull rod form a 7-shaped or L-shaped structure, a through hole is formed on the anti-icing baffle for the pin shaft to pass through, and the other side of the pin shaft is fixed through a locking pin after passing through the through hole on the anti-icing baffle.

4. The isolating switch anti-icing device according to claim 1, characterized in that: The through hole on the anti-icing baffle is a waist-shaped hole.

5. The isolating switch de-icing device according to claim 1, characterized in that: The side edges of the two anti-icing baffles are inclined, and the inclination direction is gradually inclined away from the other anti-icing baffle from the side where the anti-icing baffle is hinged to the conducting arm.

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