Special vacuum circuit breaker for ring main unit

Abstract

The utility model discloses a special vacuum circuit breaker for a ring main unit, which comprises a vacuum circuit breaker body, one side of the vacuum circuit breaker body is fixedly provided with an SMC box, one side of the SMC box is fixedly provided with a mounting plate, and the top surface of the SMC box is fixedly provided with three SMC separation boxes. According to the special vacuum circuit breaker for the ring main unit, through the arranged detection mechanism, the vacuum degree in the vacuum bubble can be detected on line, emergency measures can be started when a fault occurs, and during use, the temperature sensor B and the temperature sensor A can detect the temperature in the vacuum bubble and the temperature outside the device; then whether the vacuum degree in the vacuum bubble exceeds a preset value or not is obtained through analysis and comparison of the data processing module, if yes, the buzzer gives an alarm, meanwhile, the arc sensor can monitor the arc amount of the device, and when the arc amount exceeds the preset value, insulating oil is sprayed to the arc through the oil spray nozzle; and the arc is extinguished by using cooling and compression characteristics of oil mist.

Description

Technical Field

[0001] The utility model relates to the technical field of ring network cabinets, in particular to a vacuum circuit breaker dedicated to a ring network cabinet. Background Art

[0002] The ring main unit is a group of electrical transmission and distribution equipment (high-voltage switchgear) installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. The environmentally friendly inflatable ring main unit is a new generation of green and environmentally friendly switchgear. It uses compressed air to completely replace harmful SF6 gas without changing the user's operating and maintenance habits, providing users with new environmentally friendly, intelligent and green products.

[0003] Chinese patent CN210272175U discloses a vacuum circuit breaker device for an inflatable ring network cabinet, wherein the inner wall of the cabinet is located at the top of the vacuum circuit breaker operating mechanism and the bottom of the gas box, and a fixing cylinder is fixed, and a contact rod is slidably connected to the inner wall of the fixing cylinder, and a spring is connected between the contact rod and the fixing cylinder. The utility model makes the contact rod contact and abut against the vacuum circuit breaker operating mechanism and the gas box, so that during the repeated action of the vacuum circuit breaker operating mechanism, the spring buffering performance connected between the contact rod and the fixing cylinder is used to reduce the loosening of the fixing point caused by the impact, thereby effectively ensuring that the vacuum circuit breaker maintains normal operation for a long time.

[0004] However, the device cannot perform online detection of the vacuum degree of the vacuum bubble, and the power supply needs to be turned off to detect it. When a fault occurs, it cannot promptly remind the user to perform maintenance, inspection, or emergency measures. This may cause an arc to occur when the vacuum bubble fails, and may even cause explosions in the device. Its practicality is average. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a vacuum circuit breaker dedicated to a ring main unit, which solves the problem that the existing vacuum circuit breaker dedicated to a ring main unit cannot perform online detection of the vacuum degree of the vacuum bubble, and needs to turn off the power supply to detect it. When a fault occurs, it cannot promptly remind the user to perform maintenance, inspection and emergency measures, which may cause an arc when the vacuum bubble fails, and may even cause an explosion in the device, and the problem of general practicality.

[0006] To achieve the above purpose, the utility model is implemented through the following technical scheme: a vacuum circuit breaker dedicated to a ring main unit, comprising a vacuum circuit breaker body, an SMC box fixedly installed on one side of the vacuum circuit breaker body, a mounting plate fixedly installed on one side of the SMC box, three SMC compartment boxes fixedly installed on the top surface of the SMC box, a mounting frame fixedly installed on one side of the three SMC compartment boxes, slide grooves are provided at both ends of the mounting frame, a cross plate movably installed on the inner side of the mounting frame, sliders fixedly installed on both ends of the cross plate, a limit plate fixedly installed on one end of the slider, and a bolt movably installed on the outer side of the limit plate.

[0007] Preferably, the sliding block movably penetrates the interior of the sliding groove and extends to one side of the limiting plate, and one end of the bolt is threadedly penetrates the outer side of the limiting plate and extends to the inner side of the limiting plate.

[0008] Preferably, the detection mechanism includes a temperature sensor A fixedly installed on the outside of the SMC box, a control module fixedly installed on one side of the mounting plate, a data processing module fixedly installed on the outside of the mounting plate, a signal transmission module fixedly installed on the outside of the mounting plate, a buzzer fixedly installed on the outside of the mounting plate, an insulating oil tank fixedly installed on the outside of the SMC box, an oil suction pipe fixedly installed on the top surface of the insulating oil tank, a refueling pipe fixedly installed on the top surface of the oil suction pipe, a water pump is connected to the top of the oil suction pipe, an oil pipeline is connected to the output end of the water pump, three oil distribution pipes are fixedly installed on the outside of the oil pipeline, a temperature sensor B is fixedly installed on one side of the three SMC compartments, an arc sensor is fixedly installed on the outside of the cross plate, a number of fuel injectors are fixedly installed on the outside of the cross plate, and one end of the several fuel injectors are connected to connecting pipes.

[0009] Preferably, the output end of the data processing module is electrically connected to the input end of the control module, the output end of the signal transmission module is electrically connected to the input end of the control module, the input end of the water pump is electrically connected to the output end of the control module, the output end of the temperature sensor A is electrically connected to the input end of the data processing module, the output end of the temperature sensor B is electrically connected to the input end of the data processing module, the output end of the arc sensor is electrically connected to the input end of the insulating oil tank, and the input end of the buzzer is electrically connected to the output end of the control module.

[0010] Preferably, the detection end of the temperature sensor B passes through one side of the three SMC compartments and extends to the interior of the SMC compartments, and the detection end of the arc sensor passes through one side of the cross plate and extends to the interior of the three SMC compartments.

[0011] Preferably, the output ends of several of the oil injectors pass through one side of the horizontal plate and extend to the interior of the three SMC compartments, the bottom end of the oil suction pipe passes through the top surface of the insulating oil tank and extends to the interior of the insulating oil tank, and one end of the connecting pipe is fixedly installed on the outside of the three oil distribution pipes.

[0012] Beneficial Effects

[0013] The utility model provides a vacuum circuit breaker dedicated to a ring main unit. Compared with the prior art, it has the following beneficial effects:

[0014] (1) - The vacuum circuit breaker specially used for the ring main unit can be conveniently removed for cleaning by means of the horizontal plate. After the detection mechanism performs emergency treatment on the SMC compartment box, the slider can be rotated to remove the horizontal plate from the inside of the installation frame through the limit plate, so as to facilitate cleaning of the insulating oil inside the SMC box and avoid affecting the subsequent normal use. At the same time, the horizontal plate will bring out the oil nozzle, which is also convenient for cleaning the nozzle of the oil nozzle to avoid blockage and affect the subsequent use. It has good practicality.

[0015] (2) - The vacuum circuit breaker dedicated to the ring main unit can detect the vacuum degree inside the vacuum bubble online through the detection mechanism set up and initiate emergency measures when a fault occurs. When in use, the temperature sensor B can detect the temperature of the internal vacuum bubble, and the temperature sensor A detects the temperature outside the device. The detected data will then be transmitted to the data processing module for analysis and comparison to obtain the change in the vacuum degree inside the vacuum bubble. If the change exceeds the preset value, the data processing module will send a warning to the user's mobile terminal through the signal transmission module, and the buzzer will sound an alarm. If the distance is too far to perform maintenance in time, the arc amount of the device can be detected by the arc sensor. When it exceeds the preset value, the water pump will be started to extract insulating oil from the inside of the insulating oil tank and then spray it onto the arc through the oil spray nozzle. The cooling and compression characteristics of the oil mist are used to extinguish the arc, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0017] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1-vacuum circuit breaker body, 2-SMC box, 3-SMC compartment box, 4-detection mechanism, 41-temperature sensor A, 42-oil pipeline, 43-oil distribution pipe, 44-insulating oil tank, 45-oil suction pipe, 46-data processing module, 47-fuel pipe, 48-control module, 49-signal transmission module, 410-water pump, 411-buzzer, 412-temperature sensor B, 413-fuel injection nozzle, 414-connecting pipe, 415-arc sensor, 5-mounting plate, 6-mounting frame, 7-limiting plate, 8-bolt, 9-slider, 10-slide groove, 11-cross plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides two technical solutions:

[0022] Figure 1 and 3 The first embodiment is shown: a vacuum circuit breaker dedicated to a ring main unit, comprising a vacuum circuit breaker body 1, an SMC box 2 fixedly installed on one side of the vacuum circuit breaker body 1, a mounting plate 5 fixedly installed on one side of the SMC box 2, three SMC compartment boxes 3 fixedly installed on the top surface of the SMC box 2, a mounting frame 6 fixedly installed on one side of the three SMC compartment boxes 3, a slide groove 10 is provided at both ends of the mounting frame 6, a cross plate 11 is movably installed on the inner side of the mounting frame 6, a slider 9 is fixedly installed on both ends of the cross plate 11, a limit plate 7 is fixedly installed on one end of the slider 9, a bolt 8 is movably installed on the outer side of the limit plate 7, the slider 9 movably passes through the interior of the slide groove 10 and extends to one side of the limit plate 7, and one end of the bolt 8 is threadedly passed through the outer side of the limit plate 7 and extends to the inner side of the limit plate 7.

[0023] The horizontal plate 11 provided can facilitate the removal of the fuel injector 413 for cleaning. After the detection mechanism 4 performs emergency treatment on the SMC compartment box 3, the slider 9 can be rotated to remove the horizontal plate 11 from the inside of the mounting frame 6 through the limit plate 7, so as to facilitate the cleaning of the insulating oil inside the SMC box 2 and avoid affecting the subsequent normal use. At the same time, the horizontal plate 11 will bring out the fuel injector 413, which is also convenient for cleaning the nozzle of the fuel injector 413 to avoid blockage affecting the subsequent use, and has good practicality.

[0024] Figure 1-3The second embodiment is shown, which mainly differs from the first embodiment in that the detection mechanism 4 includes a temperature sensor A41 fixedly mounted on the outside of the SMC box 2, a control module 48 fixedly mounted on one side of the mounting plate 5, a data processing module 46 fixedly mounted on the outside of the mounting plate 5, a signal transmission module 49 fixedly mounted on the outside of the mounting plate 5, a buzzer 411 fixedly mounted on the outside of the mounting plate 5, an insulating oil tank 44 fixedly mounted on the outside of the SMC box 2, an oil suction pipe 45 fixedly mounted on the top surface of the insulating oil tank 44, and an oil suction pipe 45 fixedly mounted on the top surface of the insulating oil tank 44. A refueling pipe 47 is fixedly installed on the top surface of the oil pipe 45, a water pump 410 is connected to the top of the oil suction pipe 45, the output end of the water pump 410 is connected to the oil delivery pipe 42, three oil distribution pipes 43 are fixedly installed on the outside of the oil delivery pipe 42, a temperature sensor B412 is fixedly installed on one side of the three SMC compartments 3, an arc sensor 415 is fixedly installed on the outside of the cross plate 11, a plurality of oil nozzles 413 are fixedly installed on the outside of the cross plate 11, one end of the plurality of oil nozzles 413 are connected to a connecting pipe 414, and the output end of the data processing module 46 is connected to the The input end of the control module 48 is electrically connected, the output end of the signal transmission module 49 is electrically connected to the input end of the control module 48, the input end of the water pump 410 is electrically connected to the output end of the control module 48, the output end of the temperature sensor A41 is electrically connected to the input end of the data processing module 46, the output end of the temperature sensor B412 is electrically connected to the input end of the data processing module 46, the output end of the arc sensor 415 is electrically connected to the input end of the insulating oil tank 44, the input end of the buzzer 411 is electrically connected to the output end of the control module 48 Electrically connected, the detection end of the temperature sensor B412 passes through one side of the three SMC compartments 3 and extends to the interior of the SMC compartments 3, the detection end of the arc sensor 415 passes through one side of the cross plate 11 and extends to the interior of the three SMC compartments 3, the output ends of several oil injectors 413 all pass through one side of the cross plate 11 and extend to the interior of the three SMC compartments 3, the bottom end of the oil suction pipe 45 passes through the top surface of the insulating oil tank 44 and extends to the interior of the insulating oil tank 44, and one end of the connecting pipe 414 is fixedly installed on the outside of the three oil distribution pipes 43.

[0025] The detection mechanism 4 provided can detect the vacuum degree inside the vacuum bubble online and initiate emergency measures when a fault occurs. When in use, the temperature sensor B412 can detect the temperature of the internal vacuum bubble, and the temperature sensor A41 detects the temperature outside the device. The detected data will then be transmitted to the data processing module 46 for analysis and comparison to obtain the change in the vacuum degree inside the vacuum bubble. If the change exceeds a predetermined value, the data processing module 46 will issue a warning to the user's mobile terminal through the signal transmission module 49, and the buzzer 411 will sound an alarm. If maintenance cannot be carried out in time due to the long distance, the arc amount of the device can be monitored by the arc sensor 415. When it exceeds the predetermined value, the water pump 410 will be started to extract insulating oil from the inside of the insulating oil tank 44 and then spray it onto the arc through the oil nozzle 413, and the arc will be extinguished by utilizing the cooling and compression characteristics of the oil mist, thereby improving the safety of the device.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0027] During use, the user powers on the device to make it operate normally. At this time, the temperature sensor B412 will detect the temperature of the internal vacuum bubble, and the temperature sensor A41 will detect the temperature outside the device. The detected data will then be transmitted to the data processing module 46 for analysis and comparison to obtain the change in the vacuum degree inside the vacuum bubble. If the change exceeds the predetermined value, the data processing module 46 will issue a warning to the user's mobile terminal through the signal transmission module 49, and the buzzer 411 will sound an alarm. If the distance is too far to be repaired in time, the arc sensor 415 can monitor the arc amount of the device and feed the data back to the data processing module 46. When it exceeds the predetermined value, the control module 48 will start the water pump 410 to extract insulating oil from the inside of the insulating oil tank 44 and transport it to the oil distribution pipe 43 through the oil pipeline 42. Then the oil distribution pipe 43 will be distributed to the connecting pipe 414 and then sprayed to the arc from the oil nozzle 413, using the cooling and compression characteristics of the oil mist to extinguish the arc.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum circuit breaker for a ring main unit, comprising a vacuum circuit breaker body (1), characterized in that: An SMC box (2) is fixedly mounted on one side of the vacuum circuit breaker body (1), a mounting plate (5) is fixedly mounted on one side of the SMC box (2), three SMC compartment boxes (3) are fixedly mounted on the top surface of the SMC box (2), a mounting frame (6) is fixedly mounted on one side of the three SMC compartment boxes (3), a slide groove (10) is provided at both ends of the mounting frame (6), a transverse plate (11) is movably mounted on the inner side of the mounting frame (6), a slider (9) is fixedly mounted on both ends of the transverse plate (11), a limit plate (7) is fixedly mounted on one end of the slider (9), and a bolt (8) is movably mounted on the outer side of the limit plate (7).

2. A vacuum circuit breaker dedicated to a ring main unit according to claim 1, characterized in that: The sliding block (9) movably penetrates the interior of the sliding groove (10) and extends to one side of the limiting plate (7); one end of the bolt (8) is threadedly penetrates the outer side of the limiting plate (7) and extends to the inner side of the limiting plate (7).

3. A vacuum circuit breaker dedicated to a ring main unit according to claim 1, characterized in that: The detection mechanism (4) comprises a temperature sensor A (41) fixedly mounted on the outside of the SMC box (2); a control module (48) fixedly mounted on one side of the mounting plate (5); a data processing module (46) fixedly mounted on the outside of the mounting plate (5); a signal transmission module (49) fixedly mounted on the outside of the mounting plate (5); a buzzer (411) fixedly mounted on the outside of the mounting plate (5); an insulating oil tank (44) fixedly mounted on the outside of the SMC box (2); an oil suction pipe (45) fixedly mounted on the top surface of the insulating oil tank (44); and a top surface of the oil suction pipe (45) fixedly mounted on the top surface of the oil suction pipe (45). A refueling pipe (47) is fixedly installed on the surface, the top end of the oil suction pipe (45) is connected to a water pump (410), the output end of the water pump (410) is connected to an oil delivery pipe (42), three oil distribution pipes (43) are fixedly installed on the outer side of the oil delivery pipe (42), a temperature sensor B (412) is fixedly installed on one side of the three SMC compartments (3), an arc sensor (415) is fixedly installed on the outer side of the cross plate (11), and a plurality of oil nozzles (413) are fixedly installed on the outer side of the cross plate (11), and one end of each of the plurality of oil nozzles (413) is connected to a connecting pipe (414).

4. A vacuum circuit breaker dedicated to a ring main unit according to claim 3, characterized in that: The output end of the data processing module (46) is electrically connected to the input end of the control module (48), the output end of the signal transmission module (49) is electrically connected to the input end of the control module (48), the input end of the water pump (410) is electrically connected to the output end of the control module (48), the output end of the temperature sensor A (41) is electrically connected to the input end of the data processing module (46), the output end of the temperature sensor B (412) is electrically connected to the input end of the data processing module (46), the output end of the arc sensor (415) is electrically connected to the input end of the insulating oil tank (44), and the input end of the buzzer (411) is electrically connected to the output end of the control module (48).

5. The vacuum circuit breaker dedicated to a ring main unit according to claim 3, characterized in that: The detection end of the temperature sensor B (412) passes through one side of the three SMC compartments (3) and extends to the interior of the SMC compartments (3), and the detection end of the arc sensor (415) passes through one side of the cross plate (11) and extends to the interior of the three SMC compartments (3).

6. A vacuum circuit breaker dedicated to a ring main unit according to claim 3, characterized in that: The output ends of the plurality of oil injection nozzles (413) pass through one side of the horizontal plate (11) and extend to the interior of the three SMC compartment boxes (3); the bottom end of the oil suction pipe (45) passes through the top surface of the insulating oil tank (44) and extends to the interior of the insulating oil tank (44); one end of the connecting pipe (414) is fixedly mounted on the outside of the three oil distribution pipes (43).

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