Remote closing control system for grounding switch

Abstract

The utility model belongs to the technical field of electrical tests, and provides a remote closing control system for a grounding switch, which comprises a test cabinet provided with an operating handle for controlling the opening and closing of the grounding switch; the control room is provided with a console for inputting control instructions; and the pneumatic driving mechanism comprises an air cylinder connected with the operating handle and an electromagnetic valve connected with the control chamber, and the electromagnetic valve is connected with the air cylinder so as to receive switching-on and switching-off control signals sent by the control chamber and control the reciprocating motion of the air cylinder, so that the operating handle is driven to move to realize on-off and on-off of the grounding switch. The grounding switch remote closing control system provided by the utility model can replace on-site manual operation, realizes remote control closing test, ensures test safety, and improves test efficiency at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical test, and particularly relates to a remote closing control system for earthing switches. Background Art

[0002] At present, the closing tests of earthing switches of high-voltage switch cabinets (such as 61 cabinets, 28 cabinets, and ring main units) often require testers to manually operate the opening and closing operations on site. This process requires testers to have good safety operation awareness, which has relatively high requirements for testers. At the same time, even if the experimental personnel maintain a high level of safety operation awareness, there are still phenomena such as poor quality of test samples and unexpected situations during the test, which pose certain safety risks and hidden dangers. For example, dangerous phenomena such as contact burnout, bouncing, and arcing may occur, and even more dangerous phenomena such as explosion, jet of flame, liquid, gas, or metal particles of the test sample may occur, seriously endangering the personal safety of the testers. In addition, when manually operating the opening and closing operations, it is difficult to accurately adjust and control the closing time and closing phase angle, and the closing test often requires repeated opening and closing many times, causing a large workload for the testers, being time-consuming, laborious, and having low efficiency.

[0003] Therefore, it is necessary to design a remote closing control system for earthing switches that can effectively solve the above problems. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a remote closing control system for earthing switches, which can replace on-site manual operation, realize remote control of closing tests, and improve test efficiency while ensuring test safety.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model provides a remote closing control system for earthing switches, including: a test cabinet, which is provided with an operating handle for controlling the opening and closing of the earthing switch; a control room, which is provided with a console for inputting control instructions; a pneumatic driving mechanism, which includes a cylinder connected to the operating handle and a solenoid valve connected to the control room; wherein, the solenoid valve is connected to the cylinder to receive the closing and opening control signals sent by the control room and control the reciprocating movement of the cylinder, thereby driving the movement of the operating handle to realize the opening and closing of the earthing switch.

[0007] Preferably, the pneumatic driving mechanism further includes a first connecting air pipe and a second connecting air pipe, and both ends of the first connecting air pipe and the second connecting air pipe are respectively connected to the cylinder and the solenoid valve;

[0008] The solenoid valve is provided with a first exhaust hole and a second exhaust hole. The first exhaust hole is communicated with the first connecting air pipe, and the second exhaust hole is communicated with the second connecting air pipe.

[0009] Preferably, the pneumatic driving mechanism further includes an air inlet pipe connected to the solenoid valve, and an air compressor connected to the air inlet pipe.

[0010] Preferably, the telescopic rod of the cylinder is detachably connected to the operating handle.

[0011] Preferably, a clamping sleeve fixedly connected thereto is provided at the end of the telescopic rod of the cylinder. The clamping sleeve is provided with a clearance through hole, and the operating handle is movably inserted into the clearance through hole.

[0012] Preferably, the pneumatic driving mechanism further includes a base connected to the cylinder. The cylinder and the solenoid valve are fixedly provided above the base.

[0013] Preferably, the base is provided with a clamping groove adapted to the fork of the hydraulic truck, so as to facilitate the transfer and movement of the pneumatic driving mechanism by the hydraulic truck.

[0014] Preferably, the control room is further provided with a main cabinet connected to the console, and the main cabinet is connected to the solenoid valve to receive the control instructions input by the console and send the closing and opening control signals to the solenoid valve.

[0015] Preferably, the main cabinet includes a main machine module and a power amplifier output module connected to each other. The main machine module is connected to the console, and the power amplifier output module is connected to the solenoid valve.

[0016] The utility model has the following advantages and effects compared with the prior art:

[0017] (1) A pneumatic driving mechanism including a cylinder and a solenoid valve is adopted. During the closing test of the earthing switch, the tester only needs to remotely input the opening and closing instructions through the console in the control room, and then can drive the operating handle to complete the closing operation of the earthing switch through the solenoid valve and the cylinder, without manual on-site operation, effectively ensuring the personal safety of the tester and improving the test efficiency;

[0018] (2) A connecting air pipe connecting the cylinder and the solenoid valve is adopted. The pneumatic solenoid valve accurately and low-latency responds to the opening and closing control instructions, has strong stability, and is beneficial to the adjustment of the closing phase angle, thus ensuring the accuracy and reliability of the test results;

[0019] (3) Adopt a cylinder that is detachably connected to the operating handle, so that the telescopic rod of the cylinder is detachably connected to the operating handle, so as to be applied to the closing test of different high-voltage switch test cabinets, improve practicability and convenience, and thus improve the efficiency of the closing test;

[0020] (4) Adopt a base arranged below the cylinder and the solenoid valve, and the base is provided with an engaging groove adapted to the forklift of the hydraulic truck, so as to place the overall pneumatic drive mechanism on the forklift of the hydraulic truck through the base for transfer and movement, improving the convenience of use. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the grounding switch remote closing control system in the embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the pneumatic drive mechanism in the grounding switch remote closing control system in the embodiment of the present invention.

[0023] Reference numerals: 1, test cabinet; 11, operating handle; 2, control room; 21, control console; 22, main cabinet; 221, main host module; 222, power amplifier output module; 3, pneumatic drive mechanism; 31, cylinder; 32, solenoid valve; 321, first exhaust hole; 322, second exhaust hole; 33, first connecting air pipe; 34, second connecting air pipe; 35, intake pipe; 36, clamping sleeve; 361, clearance through hole; 37, base; 371, engaging groove; 4, opening transmission channel; 5, closing transmission channel. Specific Embodiments

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0025] Embodiment:

[0026] As Figures 1 to 2 shown, the present invention provides a grounding switch remote closing control system, which is applicable to the closing test of grounding switches including but not limited to 61 cabinets, 28 cabinets, and ring network cabinets. It includes a test cabinet 1, a control room 2, and a pneumatic drive mechanism 3. The test personnel can complete the closing test of the grounding switch of the test cabinet 1 in the control room 2.

[0027] The test cabinet 1 is provided with an operating handle 11 for controlling the opening and closing of the earthing switch. By rotating the operating handle 11, the closing and opening operations of the earthing switch can be completed. It should be noted that according to the different types of the test sample cabinet 1, for some operating handles 11, the counterclockwise rotation operation is to close the earthing switch, and for some operating handles 11, the clockwise rotation operation is to close the earthing switch. In view of the same principle of the two, this embodiment only describes the use case where the clockwise rotation of the operating handle 11 is to close the earthing switch.

[0028] As Figure 1 shown, the control room 2 is provided with a console 21 for inputting control instructions and a main cabinet 22 connected to the console 21. The main cabinet 22 is connected to the solenoid valve 32 to receive the control instructions input by the console 21 and send the closing and opening control signals to the solenoid valve 32. Specifically, the main cabinet 22 is connected to the solenoid valve 32 through an optical fiber to transmit the control signal.

[0029] Furthermore, the main cabinet 22 includes a main machine module 221 and a power amplifier output module 222 connected to each other. The main machine module 221 is connected to the console 21, and the power amplifier output module 222 is connected to the solenoid valve 32. Specifically, the main machine module 221 is connected to the console 21 to receive the control instructions input by the console 21. The input end of the power amplifier output module 222 is connected to the output end of the main machine module 221 through a plastic optical fiber, and the output end of the power amplifier output module 222 is connected to the input end of the solenoid valve 32 through a plastic optical fiber. The power amplifier output module 222 is provided with a tripping transmission channel 4 and a closing transmission channel 5 for transmitting the tripping control signal and the closing control signal respectively.

[0030] Combined with Figure 1 and Figure 2 shown, the pneumatic drive mechanism 3 includes a cylinder 31 connected to the operating handle 11 of the test cabinet 1 and a solenoid valve 32 connected to the control room 2. The solenoid valve 32 is connected to the cylinder 31 to receive the closing and opening control signals sent by the control room 2 and control the reciprocating movement of the cylinder 31 to drive the operating handle 11 to move, so as to realize the opening and closing operations of the earthing switch.

[0031] Refer to Figure 2As shown in the figure, the pneumatic drive mechanism 3 further includes a first connecting air pipe 33 and a second connecting air pipe 34. The two ends of the first connecting air pipe 33 and the second connecting air pipe 34 are respectively connected to the air cylinder 31 and the solenoid valve 32. The solenoid valve 32 is provided with a first exhaust hole 321 and a second exhaust hole 322. The first exhaust hole 321 is communicated with the first connecting air pipe 33, and the second exhaust hole 322 is communicated with the second connecting air pipe 34. The pneumatic drive mechanism 3 further includes an air inlet pipe 35 connected to the solenoid valve 32 and an air compressor (not shown in the figure) connected to the air inlet pipe 35. That is, the solenoid valve 32 used in this embodiment is specifically a four-way five-port valve. Since the air compressor is a mature prior art, it will not be elaborated here.

[0032] The telescopic rod of the air cylinder 31 is detachably connected to the operating handle 11. Specifically, a clamping sleeve 36 fixedly connected thereto is provided at the end of the telescopic rod of the air cylinder 31. The clamping sleeve 36 is provided with a clearance through hole 361. The operating handle 11 of the test cabinet 1 is movably inserted into the clearance through hole 361. It can be understood that the cross-sectional dimension of the clearance through hole 361 is larger than the cross-sectional dimension of the operating handle 11 to ensure that the operating handle 11 rotates during the reciprocating lifting movement of the telescopic rod of the air cylinder 31.

[0033] Further, referring to Figure 2 As shown in the figure, the pneumatic drive mechanism 3 further includes a base 37 connected to the air cylinder 31. The air cylinder 31 and the solenoid valve 32 are fixedly provided above the base 37. A clamping groove 371 adapted to the fork of the hydraulic truck is provided at the bottom of the base 37, so as to facilitate the overall lifting and towing of the pneumatic drive mechanism 3 by the hydraulic truck. The hydraulic truck can be a common 2.5-ton or 3.0-ton manual hydraulic truck, so as to facilitate the towing and movement of the pneumatic drive mechanism 3 and improve the convenience of the test.

[0034] Optionally, in some embodiments, the air cylinder 31 is detachably connected to the base 37 to replace the base 37 with different heights according to different test sample cabinets 1 and different test environments, so as to change the height of the air cylinder 31 and the telescopic rod to adapt to different test environments and working conditions. Specifically, the air cylinder 31 is fixedly connected to the base 37 through a bolt structure, and only need to screw the bolt to complete the replacement when replacing the base 37 with different heights.

[0035] It should be noted that this embodiment takes the operating handle 11 rotating clockwise to close the switch and counterclockwise to open the switch as an example for description. The principle for the case where the operating handle 11 rotates counterclockwise to close the switch and clockwise to open the switch is the same, and it will not be elaborated here.

[0036] Specifically, when the user inputs a closing command through the console 21 of the control room 2, the main control module 221 and the power amplifier output module 222 of the main cabinet 22 generate a closing control signal and transmit it to the solenoid valve 32 through the closing transmission channel 5. The closing coil of the solenoid valve 32 is energized and actuated, and high-pressure gas flows into the cylinder 31 through the first connecting air pipe 33. The excess gas in the cylinder 31 is discharged through the second connecting air pipe 34 and the second exhaust hole 322. The telescopic rod of the cylinder 31 moves downward and drives the operating handle 11 of the test cabinet 1 to rotate downward (clockwise movement), completing the closing operation of the grounding switch. When the user inputs a tripping command through the console 21 of the control room 2, the main control module 221 and the power amplifier output module 222 of the main cabinet 22 generate a tripping control signal and transmit it to the solenoid valve 32 through the tripping transmission channel 4. The tripping coil of the solenoid valve 32 is energized and actuated, and high-pressure gas flows into the cylinder 31 through the second connecting air pipe 34. The excess gas in the cylinder 31 is discharged through the first connecting air pipe 33 and the first exhaust hole 321. The telescopic rod of the cylinder 31 moves upward and drives the operating handle 11 of the test cabinet 1 to rotate upward (counterclockwise movement), completing the opening operation of the grounding switch.

[0037] In summary, the remote closing control system for the grounding switch provided by the present utility model can replace on-site manual operation, realize remote control closing tests, and improve test efficiency while ensuring test safety.

[0038] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. All equivalent changes and modifications made according to the scope of the present utility model should still fall within the scope covered by the present utility model.

Claims

1. A remote closing control system for a grounding switch, characterized in that: include: A test cabinet (1), wherein the test cabinet (1) is provided with an operating handle (11) for controlling the opening and closing of an earthing switch; A control room (2), wherein the control room (2) is provided with a control console (21) for inputting control commands; A pneumatic drive mechanism (3), comprising a cylinder (31) connected to the operating handle (11), and a solenoid valve (32) connected to the control chamber (2); The solenoid valve (32) is connected to the cylinder (31) to receive the closing and opening control signals sent by the control room (2) and control the reciprocating motion of the cylinder (31), thereby driving the operating handle (11) to move to realize the opening and closing of the grounding switch.

2. The remote closing control system for grounding switch according to claim 1, characterized in that: The pneumatic drive mechanism (3) further comprises a first connecting air pipe (33) and a second connecting air pipe (34), wherein two ends of the first connecting air pipe (33) and the second connecting air pipe (34) are respectively connected to the cylinder (31) and the solenoid valve (32); The solenoid valve (32) is provided with a first exhaust hole (321) and a second exhaust hole (322); the first exhaust hole (321) is connected to the first connecting air pipe (33), and the second exhaust hole (322) is connected to the second connecting air pipe (34).

3. The remote closing control system for grounding switch according to claim 2, characterized in that: The pneumatic drive mechanism (3) further comprises an air intake pipe (35) connected to the solenoid valve (32), and an air compressor connected to the air intake pipe (35).

4. The remote closing control system for grounding switch according to claim 1, characterized in that: The telescopic rod of the cylinder (31) is detachably connected to the operating handle (11).

5. The remote closing control system for grounding switch according to claim 4, characterized in that: The end of the telescopic rod of the cylinder (31) is provided with a clamping sleeve (36) fixedly connected thereto, the clamping sleeve (36) is provided with a clearance through hole (361), and the operating handle (11) is movably inserted into the clearance through hole (361).

6. The remote closing control system for grounding switch according to claim 1, characterized in that: The pneumatic drive mechanism (3) further comprises a base (37) connected to the cylinder (31); the cylinder (31) and the solenoid valve (32) are fixedly arranged above the base (37).

7. The remote closing control system for grounding switch according to claim 6, characterized in that: The base (37) is provided with a locking groove (371) adapted to the fork of a hydraulic vehicle, so as to facilitate the transport and movement of the pneumatic drive mechanism (3) by the hydraulic vehicle.

8. The remote closing control system for grounding switch according to claim 1, characterized in that: The control room (2) is further provided with a main cabinet (22) connected to the control console (21), and the main cabinet (22) is connected to the solenoid valve (32) to receive control instructions input from the control console (21) and to send closing and opening control signals to the solenoid valve (32).

9. The remote closing control system for grounding switch according to claim 8, characterized in that: The host cabinet (22) comprises a host module (221) and a power amplifier output module (222) connected to each other; the host module (221) is connected to the control console (21); and the power amplifier output module (222) is connected to the solenoid valve (32).

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