Tripping device of environment-friendly cabinet

Abstract

The utility model relates to a tripping device of an environment-friendly cabinet. Comprising three fuse cylinders arranged on a cabinet body, three groups of tripping assemblies in linkage fit with the three fuse cylinders respectively, a tripping shaft rotationally arranged on the cabinet body, a circuit breaker push rod in linkage fit with the tripping shaft, and a tripping trigger plate rotationally arranged on a circuit breaker operating mechanism and in linkage fit with the circuit breaker push rod, the tripping trigger plate acts along with the circuit breaker ejector rod and drives a tripping plate of the circuit breaker operating mechanism, tripping and opening of the circuit breaker operating mechanism are achieved, and the tripping shaft is provided with three transmission plates matched with the three groups of tripping assemblies. And the three transmission plates act along with the three groups of tripping assemblies and drive the tripping shaft to execute a tripping action. The three-phase tripping device has the advantages of simple structure, stable and reliable performance, sensitive tripping action and good three-phase tripping synchronism.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection cabinets, and particularly relates to a tripping device for an environmental protection cabinet. Background Art

[0002] At present, traditional ring main units usually use sulfur hexafluoride (SF6) gas as the insulating and arc extinguishing medium. According to statistics, 80% of the SF6 gas produced globally each year is applied to power equipment. However, the problem of SF6 gas leakage is becoming increasingly serious. According to the monitoring of greenhouse gases by the Global Atmosphere Watch, the total global annual emissions of SF6 are equivalent to 220 million tons of carbon dioxide (CO2), and it is still growing at a rate of 10% per year. With the acceleration of the transformation and upgrading of China's power industry and the urgent need for energy conservation and emission reduction, regulating atmospheric humidity and controlling air pollution have become an urgent task. In view of the rapid development of the power industry, it is the general trend to develop environmentally friendly gas-insulated ring main units, and future power transmission and distribution equipment will continue to evolve around requirements such as safety, reliability, miniaturization, and environmental friendliness. An environmentally friendly gas cabinet is an electrical equipment with a composite insulation structure that uses dry air insulation or nitrogen as the main insulation medium and combines with a solid insulation for the internal vacuum arc extinguishing. The tripping devices of existing environmentally friendly gas cabinets have insensitive tripping actions, poor three-phase tripping synchronization, and the tripping devices of such environmentally friendly gas cabinets also have complex structures, unreliable performance, and cumbersome assembly. Summary of the Invention

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a tripping device for an environmental protection cabinet with a simple structure, stable and reliable performance, sensitive tripping action, and good three-phase tripping synchronization.

[0004] To achieve the above purpose, the utility model adopts a tripping device for an environmental protection cabinet, which includes three fuse barrels arranged on the cabinet body, three groups of tripping components respectively in linkage cooperation with the three fuse barrels, a tripping shaft rotatably arranged on the cabinet body, a circuit breaker ejector rod in linkage cooperation with the tripping shaft, and a tripping trigger plate rotatably arranged on the circuit breaker operating mechanism and in linkage cooperation with the circuit breaker ejector rod. The tripping trigger plate moves with the circuit breaker ejector rod and drives the tripping plate of the circuit breaker operating mechanism to realize the tripping and opening of the circuit breaker operating mechanism. Three transmission plates are respectively arranged on the tripping shaft and are in cooperation with the three groups of tripping components. The three transmission plates move with the three groups of tripping components and drive the tripping shaft to perform a tripping action.

[0005] The beneficial effects of the above structure are as follows: The tripping shaft of the tripping device drives the breaker ejector rod in a rotational manner, which can ensure that the tripping shaft can quickly drive the breaker ejector rod to act, guarantee the sensitivity of the tripping action. Moreover, the three fuse cartridges drive the tripping shaft to perform the tripping action through three sets of tripping components and three drive plates, which can ensure the sensitivity of the three-phase tripping action. During operation, when the line is overloaded or short-circuited and the melt in the fuse cartridge fuses, the three fuse cartridges act automatically. The three fuse cartridges drive the three drive plates to act through three sets of tripping components. The three drive plates drive the tripping shaft to perform the tripping action. The tripping shaft drives the breaker ejector rod, and the breaker ejector rod drives the tripping trigger plate to trigger the tripping plate to act, thereby realizing the tripping and opening of the breaker operating mechanism, making the breaker switch instantaneously open and cutting off the line, achieving the purpose of protecting the line and equipment.

[0006] Particularly, the tripping component includes a support pressing plate arranged on the cabinet body, a support member arranged on the support pressing plate corresponding to the fuse cartridge, and a drive plate rotatably arranged on the support member. One end of the drive plate abuts against the ejector rod of the fuse cartridge, and a linkage cooperation between the drive plate and the ejector rod is formed. The other end of the drive plate acts with the ejector rod and abuts against the drive plate, and a linkage cooperation between the drive plate and the drive plate is formed. The tripping component adopts a modular structure design, which is convenient for the modular assembly of the tripping component and the fuse cartridge. Moreover, the ejector rod of the fuse cartridge pushes the drive plate, and the drive plate drives the tripping shaft to rotate, thereby realizing the tripping action of the tripping device, which is beneficial to improving the working reliability of the tripping device.

[0007] Particularly, three clamping holes matched with the three fuse cartridges are respectively arranged on the support pressing plate. The three clamping holes are respectively clamped on the three fuse cartridges, and a clamping cooperation between the support pressing plate and the three fuse cartridges is formed. Integrating the three fuse cartridges on the support pressing plate can realize the modular assembly of the three fuse cartridges and the cabinet body, and the assembly efficiency is higher.

[0008] Particularly, positioning shafts matched with the support member are respectively arranged on both sides of the drive plate. Arc-shaped positioning grooves matched with the positioning shafts are arranged on the support member. The positioning shafts are inserted into the arc-shaped positioning grooves, and a rotational connection cooperation between the positioning shafts and the support member is formed. The drive plate is rotatably arranged in the arc-shaped positioning groove of the support member through the positioning shaft, which can ensure that the drive plate rotates flexibly on the support member, thereby being beneficial to improving the action sensitivity of the tripping component.

[0009] Particularly, a top plate matched with the breaker ejector rod is arranged on the tripping shaft. An adjustment hole is arranged at one end of the top plate. An adjustment screw part is arranged at one end of the breaker ejector rod. The adjustment screw part is inserted into the adjustment hole and an adjustment nut is screwed. The breaker ejector rod is connected to the top plate through the adjustment screw part. By rotating the adjustment nut, the adjustment of the breaker ejector rod can be realized, and the operation is more convenient.

[0010] In particular, one end of the trip trigger plate is connected to the top rod of the circuit breaker, and the other end of the trip trigger plate is provided with an arc surface trigger part that matches the trip plate. The arc surface trigger part moves with the trip trigger plate and contacts the trip plate, and forms a linkage cooperation between the trip plate and the arc surface trigger part. The trip trigger plate drives the trip plate through the arc surface trigger part, which can avoid the trip trigger plate and the trip plate from being stuck or stuck, which is beneficial to improving the transmission reliability of the trip plate and the trip trigger plate, thereby ensuring the tripping action sensitivity of the trip device.

[0011] In particular, an indication frame is arranged on one end of the tripping shaft, and a tripping indication mark is arranged on one end of the indication frame. The indication frame moves with the tripping shaft to realize the tripping indication of the tripping device.

[0012] In particular, the cabinet is provided with a micro switch assembly matched with the indicator frame, the micro switch assembly includes a bracket arranged on the cabinet, a micro switch arranged on the bracket, and the other end of the indicator frame has a toggle part matched with the micro switch, the toggle part moves with the indicator frame and triggers the micro switch to realize the connection or disconnection of the micro switch. The micro switch monitors the position of the indicator frame, which is conducive to improving the working reliability of the trip device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the embodiment of the utility model.

[0014] Figure 2 This is a cross-sectional view of an embodiment of the utility model.

[0015] Figure 3 This is an exploded view of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] like Figures 1 to 3As shown in the figure, the embodiment of the utility model is a tripping device for an environmental protection cabinet, which includes three fuse barrels 11 arranged on a cabinet body 10, three groups of tripping components 20 respectively linked and cooperated with the three fuse barrels 11, a tripping shaft 12 rotatably arranged on the cabinet body 10, a circuit breaker ejector rod 13 linked and cooperated with the tripping shaft 12, and a tripping trigger plate 15 rotatably arranged on a circuit breaker operating mechanism 14 and linked and cooperated with the circuit breaker ejector rod 13. The tripping trigger plate 15 acts along with the circuit breaker ejector rod 13 and drives a tripping plate 141 of the circuit breaker operating mechanism 14 to realize the tripping and opening of the circuit breaker operating mechanism 14. Three transmission plates 16 respectively matched with the three groups of tripping components 20 are arranged on the tripping shaft 12. The three transmission plates 16 act along with the three groups of tripping components 20 and drive the tripping shaft 12 to perform a tripping action. The tripping component 20 includes a support pressing plate 21 arranged on the cabinet body 10, a support member 22 arranged on the support pressing plate 21 corresponding to the fuse barrel 11, and a driving plate 23 rotatably arranged on the support member 22. One end of the driving plate 23 abuts against a ejector rod 111 of the fuse barrel 11, and a linkage cooperation between the driving plate 23 and the ejector rod 111 is formed. The other end of the driving plate 23 acts along with the ejector rod 111 and abuts against the transmission plate 16, and a linkage cooperation between the transmission plate 16 and the driving plate 23 is formed. The tripping component adopts a modular structure design, which is convenient for the modular assembly of the tripping component and the fuse barrel. Moreover, the ejector rod of the fuse barrel pushes the transmission plate through the driving plate, and the transmission plate drives the tripping shaft to rotate, so as to realize the tripping action of the tripping device, which is beneficial to improving the working reliability of the tripping device. Three clamping holes 211 respectively matched with the three fuse barrels 11 are arranged on the support pressing plate 21. The three clamping holes 211 are respectively clamped on the three fuse barrels 11, and a clamping cooperation between the support pressing plate 21 and the three fuse barrels 11 is formed. Integrating the three fuse barrels on the support pressing plate can realize the modular assembly of the three fuse barrels and the cabinet body, and the assembly efficiency is higher. Positioning shafts 231 respectively matched with the support member 22 are arranged on both sides of the driving plate 23. An arc-shaped positioning groove 221 matched with the positioning shaft 231 is arranged on the support member 22. The positioning shaft 231 is inserted into the arc-shaped positioning groove 221, and a rotational connection cooperation between the positioning shaft 231 and the support member 22 is formed. The driving plate is rotatably arranged in the arc-shaped positioning groove of the support member through the positioning shaft, which can ensure the flexible rotation of the driving plate on the support member, thus being beneficial to improving the action sensitivity of the tripping component.

[0017] As Figure 1 and 2As shown, the tripping shaft 12 is provided with a top plate 17 matched with the circuit breaker top rod 13, one end of the top plate 17 is provided with an adjustment hole 171, and one end of the circuit breaker top rod 13 is provided with an adjustment screw portion 131, and the adjustment screw portion 131 is inserted into the adjustment hole 171 and tightened with an adjustment nut 18. The circuit breaker top rod is connected to the top plate through the adjustment screw portion, and the circuit breaker top rod can be adjusted by rotating the adjustment nut, which is more convenient to operate. One end of the tripping trigger plate 15 is connected to the circuit breaker top rod 13, and the other end of the tripping trigger plate 15 is provided with an arc surface trigger portion 151 matched with the tripping plate 141, and the arc surface trigger portion 151 moves with the tripping trigger plate 15 and contacts the tripping plate 141, and constitutes a linkage match between the tripping plate 141 and the arc surface trigger portion 151. The trip trigger plate drives the trip plate through the arc trigger part, which can avoid the trip trigger plate and the trip plate from being stuck or stuck, which is beneficial to improving the transmission reliability of the trip plate and the trip trigger plate, thereby ensuring the tripping action sensitivity of the trip device.

[0018] like Figure 1 and 3 As shown, an indicator frame 18 is provided on one end of the trip shaft 12, and a trip indication mark 181 is provided on one end of the indicator frame 18. The indicator frame moves with the trip shaft to realize the trip indication of the trip device. A micro switch assembly 30 matched with the indicator frame 18 is provided on the cabinet 10, and the micro switch assembly 30 includes a bracket 31 provided on the cabinet 10 and a micro switch 32 provided on the bracket 31. The other end of the indicator frame 18 has a toggle portion 182 matched with the micro switch 32. The toggle portion 182 moves with the indicator frame 18 and triggers the micro switch 32 to realize the connection or disconnection of the micro switch 32. The micro switch monitors the position of the indicator frame, which is conducive to improving the working reliability of the trip device.

[0019] The tripping shaft of the tripping device drives the top rod of the circuit breaker in a rotating manner, which can ensure that the tripping shaft can quickly drive the top rod of the circuit breaker to move, ensure the sensitivity of the tripping action, and the three fuse barrels drive the tripping shaft to perform the tripping action through three sets of tripping components and three transmission plates, which can ensure the sensitivity of the three-phase tripping action. During operation, when the line is overloaded or short-circuited, when the fuse in the fuse barrel melts, the three fuse barrels automatically move, the three fuse barrels drive the three transmission plates to move through the three sets of tripping components, and the three transmission plates drive the tripping shaft to perform the tripping action. The tripping shaft drives the top rod of the circuit breaker, and the top rod of the circuit breaker drives the tripping trigger plate to trigger the tripping plate to move, thereby realizing the tripping and opening of the circuit breaker operating mechanism, making the circuit breaker switch instantly open, cutting off the line, and achieving the purpose of protecting the line and equipment.

Claims

1. A tripping device for an environmental protection cabinet, characterized in that: The utility model comprises three fuse cylinders arranged on a cabinet, three groups of tripping assemblies respectively cooperating with the three fuse cylinders, a tripping shaft rotatably arranged on the cabinet, a circuit breaker top rod cooperating with the tripping shaft, and a tripping trigger plate rotatably arranged on the circuit breaker operating mechanism and cooperating with the circuit breaker top rod. The tripping trigger plate moves with the circuit breaker top rod and drives the tripping plate of the circuit breaker operating mechanism to realize the tripping and opening of the circuit breaker operating mechanism. The tripping shaft is respectively provided with three transmission plates cooperating with the three groups of tripping assemblies. The three transmission plates move with the three groups of tripping assemblies and drive the tripping shaft to perform the tripping action.

2. The tripping device of the environmental protection cabinet according to claim 1, characterized in that: The trip assembly includes a supporting pressure plate arranged on the cabinet, a supporting member arranged on the supporting pressure plate corresponding to the fuse tube, and a driving plate rotatably arranged on the supporting member. One end of the driving plate abuts against the top rod of the fuse tube, and forms a linkage cooperation between the driving plate and the top rod. The other end of the driving plate moves with the top rod and abuts against the transmission plate, and forms a linkage cooperation between the transmission plate and the driving plate.

3. The tripping device of the environmental protection cabinet according to claim 2 is characterized in that: The support pressing plate is respectively provided with three clamping holes matched with the three fuse barrels. The three clamping holes are respectively clamped on the three fuse barrels and constitute the clamping cooperation between the support pressing plate and the three fuse barrels.

4. The tripping device of the environmental protection cabinet according to claim 2, characterized in that: The driving plate has positioning shafts on both sides respectively matched with the supporting member, and the supporting member is provided with an arc-shaped positioning groove matched with the positioning shaft. The positioning shaft is inserted in the arc-shaped positioning groove and constitutes a rotational connection between the positioning shaft and the supporting member.

5. The tripping device of the environmental protection cabinet according to claim 1 or 2, characterized in that: The tripping shaft is provided with a top plate matched with the circuit breaker top rod, one end of the top plate is provided with an adjustment hole, one end of the circuit breaker top rod is provided with an adjustment screw part, the adjustment screw part is inserted in the adjustment hole and is tightened with an adjustment nut.

6. The tripping device of the environmental protection cabinet according to claim 1 or 2, characterized in that: One end of the trip trigger plate is connected to the top rod of the circuit breaker, and the other end of the trip trigger plate is provided with an arc surface trigger part that matches the trip plate. The arc surface trigger part moves with the trip trigger plate and abuts against the trip plate, and constitutes a linkage cooperation between the trip plate and the arc surface trigger part.

7. The tripping device of the environmental protection cabinet according to claim 1 or 2, characterized in that: An indication frame is arranged on one end of the tripping shaft, and a tripping indication mark is arranged on one end of the indication frame.

8. The tripping device of the environmental protection cabinet according to claim 7, characterized in that: The cabinet is provided with a micro switch assembly matched with the indicator frame, and the micro switch assembly includes a bracket arranged on the cabinet and a micro switch arranged on the bracket. The other end of the indicator frame has a toggle part matched with the micro switch, and the toggle part moves with the indicator frame and triggers the micro switch to realize the connection or disconnection of the micro switch.

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