CN112542750B - A withdrawable VD4 switch and its linkage test method - Google Patents

Abstract

The invention provides a withdrawable VD4 switch and its linkage test method. The withdrawable VD4 switch includes a switch body, a switch base and an auxiliary extension device. The switch body is provided with a first pin, and the switch base is provided with a first wiring. post, the auxiliary extension device includes a first disc with a second pin, a second disc with a second terminal and a wire, the first disc is provided with a first magnet, and the second disc is provided with a The second magnet, the position of the first magnet and the second magnet are set correspondingly. When the auxiliary extension device is used, the second pin cooperates with the first terminal, and the second terminal cooperates with the first pin to realize the electrical connection between the switch body and the switch base. Connection and linkage test, the first pin does not need to directly cooperate with the first terminal, omitting the alignment operation, the first magnet is adsorbed on the end face of the switch base, and the second magnet is adsorbed on the end face of the switch body; when the auxiliary extension device is stored , the second pin cooperates with the second terminal, and the first magnet and the second magnet are attracted to each other.

Description

A withdrawable VD4 switch and its linkage test method

technical field

The invention relates to the technical field of VD4 switches, in particular to a withdrawable VD4 switch and a linkage test method thereof.

Background technique

The withdrawable VD4 switch has a handcart chassis structure, and the switch can be pushed or pulled to the corresponding position in different states of the line. In order to check the correctness of the action of the withdrawable VD4 switch related to the opening and closing circuit, anti-jump circuit, reclosing deactivation circuit and air pressure locking circuit, as well as the phase consistency of each phase current and voltage and the circuit breaker opening and closing circuit, A switch linkage test is required. In the switch linkage test, it is necessary to correspond the upper jack on the switch cabinet with the carrying trolley, and keep the level fixed after insertion. Because the switch trolley and the running trolley are both heavy, the probability of a successful alignment operation of the trolley is low, making the alignment operation Occupies most of the time in the whole test preparation process.

Contents of the invention

The object of the present invention is to provide a withdrawable VD4 switch with an auxiliary extension device.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a withdrawable VD4 switch, including a switch body and a switch base, the switch body is provided with a first pin, and the switch base is provided with a first pin that matches the first pin. One terminal, the end face of the switch body with the first pin and the end face of the switch base with the first terminal are both metal end faces, the withdrawable VD4 switch also includes an auxiliary extension device, the auxiliary extension device includes a second plug The first disk of the needle, the second disk provided with the second terminal, and the wires electrically connecting the first disk and the second disk, the surrounding protrusions of the second pin are arranged to form a first boss, and the first The boss is provided with a first installation groove, the first magnet is slidably connected in the first installation groove, and the surroundings of the second terminal are protruded to form a second boss, and the second boss is provided with a second installation groove. A second magnet is slidably connected in the second installation slot, and the first magnet and the second magnet are positioned correspondingly. Cooperate to realize the electrical connection between the switch body and the switch base, the first magnet is adsorbed on the end face of the switch base, and the second magnet is adsorbed on the end face of the switch body; when the auxiliary extension device is in the storage state, the second pin and the second The terminal posts cooperate to realize the connection between the first disc and the second disc, and the first magnet and the second magnet are attracted to each other.

Further, when the second pin is mated with the second terminal, the end surface of the first boss abuts against the end surface of the second boss.

Further, the length of the second pin is L when mated with the second terminal, and the heights of the first boss and the second boss are both L/2.

Further, the first installation groove is provided with a first slider, the first magnet is installed on the end of the first slider close to the notch of the first installation groove, and the inner wall of the first installation groove is provided with a vertical The first chute, the side wall of the first slider is provided with a first guide bar matched with the first chute, and the first guide bar moves in the first chute to realize that the first slider moves closer to or away from the switch base. direction to move.

Further, a second slider is provided in the second installation groove, and the second magnet is installed on the end of the second slider close to the notch of the second installation groove. The inner wall of the second installation groove is provided with a vertical The second chute, the side wall of the second slider is provided with a second guide bar matched with the second chute, and the second guide bar moves in the second chute to realize that the second slider moves closer to or away from the switch body. direction to move.

Further, there are multiple first installation grooves arranged at regular intervals along the circumferential direction of the first boss, and multiple second installation grooves are provided and arranged at intervals evenly along the circumferential direction of the second boss.

After adopting the technical scheme, the present invention has the following advantages:

By setting the auxiliary extension device, the auxiliary extension device includes the first disc, the second disc and the wire, and by matching the second pin of the first disc with the first terminal of the switch base, the second pin of the second disc is The second terminal is matched with the first pin of the switch body to realize the electrical connection between the switch body and the switch base, so that during the linkage test, the first pin does not need to be directly electrically connected to the first terminal, and the switch body does not need to move to the switch base. The matching position omits the alignment operation, which greatly saves the test preparation time for the linkage test. At the same time, the first disc is provided with a first magnet, because the end face of the switch base is a metal end face, when the second pin is in a mated state with the first terminal, the first magnet and the metal end face of the switch base attract each other, The first magnet moves toward the metal end surface of the switch base and is adsorbed on the metal end surface of the switch base, so that the cooperation between the second pin and the first terminal is relatively stable, and it is not easy to be separated by external force; the same, the second There is a second magnet on the disc. When the second terminal and the first pin are in a mated state, the second magnet and the metal end surface of the switch body attract each other, and the second magnet moves toward the metal end surface of the switch body and is adsorbed on the switch body. On the metal end surface of the second terminal, the cooperation between the second terminal and the first pin is relatively stable, and it is not easy to be separated by external force. When the auxiliary extension device is in the storage state, the second pin cooperates with the second terminal to realize the connection between the first disc and the second disc, so that the second pin is located in the second terminal and is not easily damaged during the storage process , and at the same time, the first magnet and the second magnet are attracted to each other, so that the cooperation between the second pin and the second terminal is stable, and it is not easy to disengage.

The invention also discloses a linkage test method of a withdrawable VD4 switch, including the interval confirmation process, test preparation process, test operation process and recovery site process. The withdrawable VD4 switch adopts the withdrawable VD4 in any of the above scheme switch, the test preparation process includes the following steps:

S110, connect the maintenance power supply;

S120, inserting the second pin of the first disk into the first terminal on the switch base;

S130. Plug the second terminal of the second disk into the first pin on the switch body;

The restore onsite process includes the following steps:

S210. Remove the second pin of the first disc from the first terminal of the switch base;

S220. Remove the second terminal of the second disk from the first pin of the switch body;

S230. Insert the second pin of the first disc into the second terminal of the second disc.

By using the auxiliary extension device, the second pin of the first disc cooperates with the first terminal of the switch base, and the second pin of the second disc cooperates with the first pin of the switch body to realize the connection between the switch body and the switch base. Electrical connection, instead of the first pin of the previous switch body directly mating with the first terminal of the switch base, the switch body does not need to move to the position where it fits with the switch base, omitting the alignment operation, which greatly saves the test preparation for the linkage test time. At the same time, in the process of restoring the site, the second pin of the first disc is matched with the second terminal of the second disc 320, so that the second pin is located in the second terminal, which is not easy to be damaged during the storage process .

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a schematic diagram of the auxiliary extension device in the withdrawable VD4 switch according to the present invention before it cooperates with the switch body and the switch base.

Fig. 2 is a schematic diagram of cooperation between the auxiliary extension device, the switch body and the switch base in the withdrawable VD4 switch of the present invention.

Fig. 3 is a cross-sectional view of the auxiliary extension device, the switch body and the switch base in the withdrawable VD4 switch according to the present invention.

Fig. 4 is a cross-sectional view of the second pin of the auxiliary extension device in the withdrawable VD4 switch of the present invention before mating with the second terminal.

5 is a cross-sectional view of the second pin of the auxiliary extension device in the withdrawable VD4 switch of the present invention mating with the second terminal.

The names of the components marked in the figure are as follows:

100. Switch body; 110. First pin; 200. Switch base; 210. First terminal; 300. Auxiliary extension device; 310. First disc; 311. Second pin; 312. First boss ; 313, the first installation groove; 314, the first slider; 315, the first magnet; 320, the second disc; 321, the second terminal; 322, the second boss; 323, the second installation groove; 324 , the second slider; 325, the second magnet; 330, the wire.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", "vertical", "horizontal", " Words such as "top", "bottom", etc. indicating orientation or positional relationship are only based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device/element must have a specific orientation or are constructed and operative in a particular orientation and therefore are not to be construed as limiting the invention.

As shown in Figures 1 to 5, the present invention provides a withdrawable VD4 switch, including a switch body 100 and a switch base 200, the switch body 100 is provided with a first pin 110, and the switch base 200 is provided with a first The first terminal 210 matched with the pin 110, the end face of the switch body 100 with the first pin 110 and the end face of the switch base 200 with the first terminal 210 are all metal end faces, and the withdrawable VD4 switch also includes an auxiliary extension The device 300, the auxiliary extension device 300 includes a first disc 310 provided with a second pin 311, a second disc 320 provided with a second terminal 321, and an electrical connection between the first disc 310 and the second disc 320. When the wire 330 and the auxiliary extension device 300 are in use, the second pin 311 cooperates with the first terminal 210 , and the second terminal 321 cooperates with the first pin 110 to realize the electrical connection between the switch body 100 and the switch base 200 , so that during the linkage test, the first pin 110 does not need to be directly electrically connected to the first terminal 210, and the switch body 100 does not need to be moved to a position that matches the switch base 200, and the alignment operation is omitted, which greatly saves the test of the linkage test Preparation time.

The surrounding protrusions of the second pin 311 are set to form a first boss 312, and the first boss 312 is provided with a first mounting groove 313, and a first magnet 315 is slidably connected to the first mounting groove 313, and the second pin 311 When the first terminal 210 is in a mated state, the first magnet 315 and the metal end surface of the switch base 200 attract each other, and the first magnet 315 moves toward the metal end surface of the switch base 200 and is adsorbed on the metal end surface of the switch base 200, so that the first magnet 315 The cooperation between the second pin 311 and the first terminal 210 is relatively stable, and it is not easy to be separated by external force.

Surroundings of the second terminal 321 protrude to form a second boss 322, the second boss 322 is provided with a second installation groove 323, the second installation groove 323 is slidably connected with a second magnet 325, the second terminal 321 When mated with the first pin 110, the second magnet 325 and the metal end surface of the switch body 100 attract each other, and the second magnet 325 moves toward the metal end surface of the switch body 100 and is adsorbed on the metal end surface of the switch body 100, so that the second magnet 325 The cooperation between the second terminal 321 and the first pin 110 is relatively stable, and it is not easy to be separated by external force.

When the auxiliary extension device 300 is in the storage state, the second pin 311 cooperates with the second terminal 321 to realize the connection between the first disc 310 and the second disc 320, so that the second pin 311 is located in the second terminal 321, In the storage process, it is not easy to be damaged. The first magnet 315 and the second magnet 325 are located in correspondence with each other. disengage.

In this embodiment, when the second pin 311 is in the mated state with the second terminal 321, that is, when the auxiliary extension device 300 is in the storage state, the end surface of the first boss 312 is in contact with the end surface of the second boss 322, and the second The first magnet 315 and the second magnet 325 can be attracted to each other without moving, so that the cooperation between the first disc 310 and the second disc 320 is more stable.

When the second pin 311 and the second terminal 321 are in the mated state, the length is L, and the heights of the first boss 312 and the second boss 322 are both L/2, ensuring that the end face of the first boss 312 and the second boss The end faces of the stage 322 abut against each other.

The first installation groove 313 is provided with a first slider 314, the first magnet 315 is installed with the end of the first slider 314 close to the notch of the first installation groove 313, and the inner wall of the first installation groove 313 is provided with a vertical The first chute (vertical setting refers to the orientation shown in the accompanying drawings), the side wall of the first slider 314 is provided with a first guide bar matched with the first chute, the first guide bar is on the first The movement in the chute enables the first slider 314 to move toward or away from the switch base 200 , and then realizes the first magnet 315 to approach or move away from the end surface of the switch base 200 .

The second installation groove 323 is provided with a second slider 324, the second magnet 325 is installed on the end of the second slider 324 close to the notch of the second installation groove 323, and the inner wall of the second installation groove 323 is provided with a vertical The second chute (vertical setting refers to the orientation shown in the accompanying drawings), the side wall of the second slider 324 is provided with a second guide bar matched with the second chute, the second guide bar is on the second The movement in the chute enables the second sliding block 324 to move toward or away from the switch body 100 , thereby realizing the second magnet 325 to approach or move away from the end surface of the switch body 100 .

The first mounting groove 313 is provided with a plurality and is evenly spaced along the circumferential direction of the first boss 312, so that the first magnet 315 is provided with a plurality, further ensuring that the first magnet 315 can be stably adsorbed on the end surface of the switch base 200, There are multiple second mounting grooves 323 and are evenly spaced along the circumferential direction of the second boss 322 , so that multiple second magnets 325 are provided, which further ensures that the second magnets 325 can be stably adsorbed on the end surface of the switch body 100 .

An insulating corrugated tube is sheathed on the wire 330 to protect the wire 330 and avoid dangers such as electric leakage, making the use of the auxiliary extension device 300 safer.

The invention also discloses a linkage test method of a withdrawable VD4 switch, including the interval confirmation process, test preparation process, test operation process and recovery site process. The withdrawable VD4 switch adopts the withdrawable VD4 in any of the above scheme switch, the test preparation process includes the following steps:

S110, connect the maintenance power supply;

S120, inserting the second pin 311 of the first disc 310 into the first terminal 210 on the switch base 200;

S130, inserting the second terminal 321 of the second disc 320 into the first pin 110 of the switch body 100;

The restore onsite process includes the following steps:

S210, remove the second pin 311 of the first disk 310 from the first terminal 210 of the switch base 200;

S220. Remove the second terminal 321 of the second disc 320 from the first pin 110 of the switch body 100;

S230 , inserting the second pin 311 of the first disc 310 into the second terminal 321 of the second disc 320 .

By using the auxiliary extension device 300, the second pin 311 of the first disc 310 is matched with the first terminal 210 of the switch base 200, and the second pin 311 of the second disc 320 is matched with the first pin of the switch body 100. 110 to realize the electrical connection between the switch body 100 and the switch base 200, instead of the first pin 110 of the previous switch body 100 directly cooperating with the first terminal 210 of the switch base 200. position, omitting the alignment operation, which greatly saves the test preparation time for the linkage test. At the same time, in the process of restoring the site, the second pin 311 of the first disc 310 is matched with the second terminal 321 of the second disc 320, so that the second pin 311 is located in the second terminal 321, and the It is not easy to be damaged in the process.

Except above-mentioned preferred embodiment, the present invention also has other embodiments, and those skilled in the art can make various changes and deformations according to the present invention, as long as they do not depart from the spirit of the present invention, all should belong to the scope defined in the appended claims of the present invention scope.

Claims (3)

1. A withdrawable VD4 switch comprises a switch body and a switch base, wherein a first contact pin is arranged on the switch body, a first binding post matched with the first contact pin is arranged on the switch base, the end face of the switch body, provided with the first contact pin, and the end face of the switch base, provided with the first binding post are both metal end faces, the withdrawable VD4 switch is characterized by also comprising an auxiliary extension device, the auxiliary extension device comprises a first disc, a second disc and a lead, the first disc is provided with a second binding post, the lead is electrically connected with the first disc and the second disc, the periphery of the second contact pin is convexly provided with a first boss, the first boss is provided with a first mounting groove, the first mounting groove is internally and slidably connected with a first magnet, the periphery of the second binding post is convexly provided with a second boss, the second boss is provided with a second mounting groove, the second magnet is internally and slidably connected with the second magnet, the first magnet and the second magnet are correspondingly arranged, when the auxiliary extension device is in a use state, the second contact pin is matched with the first binding post, the first contact pin is matched with the first contact pin to realize the electric connection between the switch body and the switch base, the first magnet is adsorbed on the end face of the switch base; when the auxiliary extension device is in a storage state, the second contact pin is matched with the second binding post to realize the connection of the first disc and the second disc, and the first magnet and the second magnet are mutually adsorbed; when the second contact pin and the second binding post are in a matched state, the end face of the first boss abuts against the end face of the second boss; a first sliding block is arranged in the first mounting groove, a first magnet is mounted at the end part, close to the notch of the first mounting groove, of the first sliding block, a vertically arranged first sliding groove is formed in the inner wall of the first mounting groove, a first guide strip matched with the first sliding groove is arranged on the side wall of the first sliding block, and the first guide strip moves in the first sliding groove to realize that the first sliding block moves towards the direction close to or far away from the switch base;

a second sliding block is arranged in the second mounting groove, a second magnet is mounted at the end part, close to the notch of the second mounting groove, of the second sliding block, a second sliding groove which is vertically arranged is formed in the inner wall of the second mounting groove, a second guide strip matched with the second sliding groove is arranged on the side wall of the second sliding block, and the second guide strip moves in the second sliding groove to realize that the second sliding block moves towards the direction close to or far away from the switch body;

the linkage test method of the drawable VD4 switch comprises an interval confirming process, a test preparation process, a test operation process and a field recovery process,

the test preparation process comprises the following steps:

s110, connecting a maintenance power supply;

s120, inserting a second contact pin of the first disc into a first binding post on the switch base;

s130, inserting a second binding post of the second disc into a first contact pin on the switch body;

the recovery field process includes the steps of:

s210, taking down a second contact pin of the first disc from a first binding post of the switch base;

s220, taking down a second binding post of the second disc from a first contact pin of the switch body;

and S230, inserting the second pin of the first disk into the second binding post of the second disk.

2. The withdrawable VD4 switch of claim 1, wherein the length of the second pin when being matched with the second binding post is L, and the heights of the first boss and the second boss are both L/2.

3. The withdrawable VD4 switch according to claim 1, wherein the first mounting groove is provided in plurality and is disposed at intervals along a circumferential direction of the first boss, and the second mounting groove is provided in plurality and is disposed at intervals along a circumferential direction of the second boss.

Images