Remote electric leakage experiment controller of feeder switch

Abstract

The utility model discloses a remote electric leakage experiment controller for a feeder switch. The remote electric leakage experiment controller comprises a housing; the relay device is fixed at the lower end in the shell; compared with the prior art, the utility model has the following advantages: 1, the remote control function is realized by using the RS485 communication module, so that an operator does not need to go to the field to operate feeder switches one by one to carry out a leakage test, and the working efficiency and the safety are greatly improved; 2, the internal temperature of the shell is monitored through the temperature sensor, and when the temperature reaches a certain value, the microprocessor controls the exhaust fan to work for active heat dissipation; and meanwhile, the air guide pipe is arranged, so that external air entering the shell can be directly guided to a heating area of the relay device, accurate heat dissipation is realized, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of leakage current testing technology, and in particular to a remote leakage current testing controller for a power supply switch. Background Technology

[0002] Feeder switches, as crucial equipment in power systems, are primarily used to control and protect power lines, ensuring the safety and stability of power supply. In industries such as coal mining and petrochemicals, feeder switches play an even more vital role; their reliability and safety directly impact the safe operation of production. Traditional feeder switch leakage current tests typically require on-site operation by personnel, manually connecting or disconnecting the circuit to simulate leakage and check the feeder switch's leakage protection function. However, this method has several drawbacks.

[0003] First, traditional leakage current tests require workers to be in close proximity to the power supply switch. Especially in dangerous environments such as coal mines where there are flammable and explosive gases such as methane, this close-range operation greatly increases the risk of electric shock and explosion accidents.

[0004] Secondly, the traditional leakage current test process is cumbersome and inefficient. When multiple feeder switches need to be tested for leakage current, staff need to go to the site one by one, which not only consumes a lot of time and manpower, but also affects the normal operation of production.

[0005] In view of the above defects, this utility model proposes a remote leakage current test controller for a power supply switch to solve the above problems. This utility model was developed in this context. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a remote leakage current test controller for power supply switch to solve the above problems.

[0007] To achieve the above objectives, the present invention provides a remote leakage current test controller for a power supply switch, comprising:

[0008] shell;

[0009] The relay device is fixed inside the lower end of the housing;

[0010] There are two ventilation openings, which are respectively installed through the upper ends of the outer shell on both sides. Each ventilation opening has two baffles inside, and the upper ends of the baffles are rotatably connected to the upper ends of the ventilation openings via a rotating shaft.

[0011] One of the ventilation openings is equipped with an exhaust fan, and the other ventilation opening is equipped with a dust filter;

[0012] The vent equipped with a dustproof net is connected to a duct. One end of the duct is fixedly connected to the vent equipped with the dustproof net, and the other end of the duct faces the relay device.

[0013] Preferably, a microprocessor is installed inside the housing, the microprocessor is connected to a temperature sensor, and the exhaust fan is electrically connected to the microprocessor.

[0014] Preferably, an RS communication module is installed inside the housing, and the RS communication module is electrically connected to the microprocessor.

[0015] Preferably, the relay device includes an electromagnet, a return spring, an armature, contacts, and terminals. The electromagnet is fixedly installed inside the housing, the armature is rotatably installed inside the housing, the return spring is connected between the armature and the housing, the contacts are fixed inside the housing, and there are two contacts. The two contacts are electrically connected to two terminals, and the two terminals are fixed outside the housing.

[0016] The air outlet of the air duct faces the two contact points.

[0017] Preferably, the housing is fixed with four mounting ears.

[0018] Preferably, a wind speed sensor is installed inside the air duct, the wind speed sensor is electrically connected to the microprocessor, and the microprocessor is connected to an LED light.

[0019] Preferably, the outer shell has a rectangular limiting groove integrally formed on the outside of the ventilation opening where the dustproof net is installed. The dustproof net is limited in the rectangular limiting groove, and a clamping plate is rotatably installed at the opening of the rectangular limiting groove. The clamping plate is in close contact with the surface of the dustproof net.

[0020] Preferably, a compression spring is fixedly connected to the bottom of the rectangular limiting groove, and a fixing plate is fixed to the compression spring. The fixing plate is in close contact with the inner surface of the dustproof net.

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] 1. This utility model utilizes an RS485 communication module to achieve remote control functionality, eliminating the need for operators to go to the site to operate each power supply switch individually for leakage current testing, thus greatly improving work efficiency and safety.

[0023] 2. This invention monitors the internal temperature of the casing using a temperature sensor. When the temperature reaches a certain value, the microprocessor controls the exhaust fan to operate for active heat dissipation. Simultaneously, the air duct design allows incoming air to be directly directed to the heat-generating area of ​​the relay device, achieving precise heat dissipation and extending the equipment's lifespan.

[0024] 3. This utility model incorporates a dustproof mesh at the ventilation opening, effectively reducing dust entry into the casing and protecting internal components from dust damage. Furthermore, the design of the rectangular limiting groove, clamping plate, and clamping spring makes the installation and removal of the dustproof mesh simple, convenient, and easy to maintain.

[0025] 4. This utility model is equipped with a wind speed sensor inside the air duct. When the dust filter is blocked and the wind speed decreases significantly, the microprocessor controls the LED light to brighten or the buzzer to sound an alarm, reminding staff to clean the dust filter in time and prevent malfunctions. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a frontal cross-sectional view of the present invention.

[0028] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0029] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0030] In the diagram: 1. Housing; 2. Relay device; 21. Electromagnet; 22. Return spring; 23. Armature; 24. Contact; 25. Terminal; 3. Vent; 4. Baffle; 5. Rotating shaft; 6. Exhaust fan; 7. Dustproof net; 8. Air duct; 9. Microprocessor; 10. Temperature sensor; 11. RS485 communication module; 12. Mounting ear; 13. Wind speed sensor; 14. Rectangular limit groove; 15. Pressure plate; 16. Pressure spring; 17. Fixing plate; 18. LED light. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be described in further detail.

[0032] like Figure 1-3 As shown, the remote leakage current test controller for the power supply switch of this utility model includes:

[0033] The outer casing 1 has four mounting ears 12 fixed at its four corners for fixed installation with the power supply switch.

[0034] The relay device 2 is fixed inside the lower end of the housing 1 and is used to remotely connect the circuit of the power supply switch, so that the equipment does not need to be operated at close range in dangerous areas where gas may be released, thus ensuring the safety of personnel.

[0035] There are two vents 3, which are respectively installed on the upper sides of the outer shell 1. Two baffles 4 are installed inside the two vents 3. The upper end of the baffles 4 is rotatably connected to the upper end of the vent 3 through a rotating shaft 5. Under normal circumstances, under the action of gravity, the two baffles 4 are vertically installed inside the two vents 3 to prevent dust from entering the interior of the outer shell 1.

[0036] One of the vents 3 of the outer casing 1 is equipped with an exhaust fan 6, and the other vent 3 of the outer casing 1 is equipped with a dust filter 7. When the internal temperature of the outer casing 1 is relatively high, the exhaust fan 6 can ventilate and dissipate heat. When the exhaust fan 6 is working, it blows the baffle 4 inside the corresponding vent 3 outward. At the same time, the air pressure inside the outer casing 1 decreases, allowing air to enter the vent 3 on the other side. The dust filter 7 can reduce the amount of dust entering the interior of the outer casing 1.

[0037] Furthermore, the vent 3 with dustproof net 7 is connected to the air guide pipe 8. One end of the air guide pipe 8 is fixedly connected to the vent 3 with dustproof net 7, and the other end of the air guide pipe 8 faces the relay device 2. Through the setting of the air guide pipe 8, the air entering the outer casing 1 from the outside can be directly guided to the heat-generating area of ​​the relay device 2 to achieve precise heat dissipation.

[0038] To facilitate monitoring of the internal temperature of the housing 1, a microprocessor 9 is installed inside the housing 1. The microprocessor 9 is connected to a temperature sensor 10. The exhaust fan 6 is electrically connected to the microprocessor 9. The temperature sensor 10 is used to monitor the internal temperature of the housing 1. The microprocessor 9 is used to obtain the temperature value monitored by the temperature sensor 10. When the temperature reaches a certain value, the microprocessor 9 controls the circuit of the exhaust fan 6 to be turned on, so that the exhaust fan 6 works and performs active heat dissipation.

[0039] To enable remote control, an RS485 communication module 11 is installed inside the housing 1. The RS485 communication module 11 is electrically connected to the microprocessor 9. The RS485 communication module 11 enables remote control. In use, the remote leakage current test controller for the power supply switch is installed inside the power supply switch through the mounting ear 12 and connected to the substation through the RS485 communication module 11. Operators do not need to go to the site to operate each power supply switch individually for leakage current testing. Multiple explosion-proof power supply switches can be tested simultaneously through remote control.

[0040] In some embodiments, the relay device 2 includes an electromagnet 21, a return spring 22, an armature 23, a contact 24, and a terminal 25. The electromagnet 21 is fixedly installed inside the housing 1, the armature 23 is rotatably installed inside the housing 1, the return spring 22 is connected between the armature 23 and the housing 1, the contact 24 is fixed inside the housing 1, and there are two contacts 24. The two contacts 24 are electrically connected to two terminals 25. The two terminals 25 are fixed outside the housing 1 and are used for circuit connection with the power supply switch.

[0041] The air outlet of the air duct 8 faces the two contact points 24.

[0042] When the electromagnet 21 is energized, the armature 23 moves. When the armature 23 moves, the two contacts 24 are connected, thereby connecting the circuit of the power supply switch connected to the two terminals 25. The contacts 24 are the main heat-generating areas. The air outlet of the air duct 8 is directed towards the two contacts 24 to achieve precise heat dissipation.

[0043] In some embodiments, a wind speed sensor 13 is installed inside the air duct 8. The wind speed sensor 13 is electrically connected to the microprocessor 9, which is connected to an LED light 18. The wind speed sensor 13 is used to detect the airflow when the exhaust fan 6 is working. When the dust filter 7 is blocked, the wind speed will decrease significantly. After the microprocessor 9 receives the signal, it controls the LED light 18 to brighten, reminding the staff to clean the dust filter 7. In some embodiments, the LED light 18 can also be replaced by a buzzer.

[0044] In some embodiments, the outer shell 1 has an integrally formed rectangular limiting groove 14 on the outside of the ventilation opening 3 where the dustproof net 7 is installed. The dustproof net 7 is limited in the rectangular limiting groove 14. A clamping plate 15 is rotatably installed at the opening of the rectangular limiting groove 14. The clamping plate 15 is in close contact with the surface of the dustproof net 7. When installing the dustproof net 7, the dustproof net 7 is placed into the rectangular limiting groove 14, and then the clamping plate 15 is rotated to make the clamping plate 15 fit against the surface of the dustproof net 7 for limiting. It is simple and convenient.

[0045] In some embodiments, such as Figure 3 As shown, a compression spring 16 is fixedly connected to the bottom of the rectangular limiting groove 14. The compression spring 16 is fixed with a fixing plate 17. The fixing plate 17 is in close contact with the inner surface of the dustproof net 7. By setting the compression spring 16, on the one hand, the dustproof net 7 and the pressing plate 15 can be pressed together. On the other hand, when disassembling the dustproof net 7, after rotating the pressing plate 15 to one side, the dustproof net 7 can automatically pop out from the inside of the rectangular limiting groove 14 under the elastic force of the compression spring 16, thus facilitating the disassembly of the dustproof net 7.

[0046] In summary, this utility model provides a remote leakage current test controller for a power supply switch. It can be installed inside an explosion-proof power supply switch and connected to a substation via an RS485 communication module 11 for remote control. This ensures safe and efficient leakage current testing in flammable and explosive environments such as coal mines, reducing accident risks and improving maintenance convenience. Furthermore, this utility model monitors the internal temperature of the casing 1 using a temperature sensor 10. When the temperature reaches a certain value, the microprocessor 9 controls the exhaust fan 6 to operate for active cooling. Simultaneously, the air duct 8 allows incoming air to be directly directed to the heating area of ​​the relay device 2, achieving precise heat dissipation and extending the equipment's service life.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A remote leakage experiment controller for a feeder switch, characterized in that, Include: The shell (1); Relay device (2), fixed in the lower end of the inside of the shell (1); The air vent (3), two, two said air vent (3) is provided respectively in the upper end of the shell (1) both sides, and two air vents (3) are provided with two baffles (4), the upper end of the baffle (4) is rotatably connected with the upper end of the air vent (3) through the rotating shaft (5); One of the said air vent (3) is installed with exhaust fan (6), the other said air vent (3) is installed with dust screen (7); The air vent (3) connected with dust screen (7) is connected with the air duct (8), one end of the air duct (8) is fixedly connected with the air vent (3) provided with the dust screen (7), the other end of the air duct (8) is towards the relay device (2).

2. The power feeding switch remote earth leakage test controller according to claim 1, characterized in that, The shell (1) is provided with a microprocessor (9), the microprocessor (9) is connected with temperature sensor (10), the exhaust fan (6) is electrically connected with the microprocessor (9).

3. The power feeding switch remote earth leakage test controller according to claim 2, characterized in that, The shell (1) is provided with RS (485) communication module (11), the RS (485) communication module (11) is electrically connected with the microprocessor (9).

4. The power feeding switch remote earth leakage test controller according to claim 1, characterized in that, The relay device (2) includes electromagnet (21), reset spring (22), armature (23), contact (24) and terminal (25), the electromagnet (21) is fixedly installed in the inside of the shell (1), the armature (23) is rotatably installed in the shell (1), the reset spring (22) is connected between the armature (23) and the shell (1), the contact (24) is fixed in the inside of the shell (1), and the number of contact (24) is two, two said contact (24) is electrically connected with two said terminal (25), two said terminal (25) is fixedly installed in the outside of the shell (1); The air outlet of the air duct (8) is towards two said contact (24).

5. The power feeding switch remote earth leakage test controller according to claim 1, characterized in that, The shell (1) is fixed with four mounting ears (12).

6. The power feeding switch remote earth leakage test controller according to claim 2, wherein, The air duct (8) is provided with a wind speed sensor (13), the wind speed sensor (13) is electrically connected with the microprocessor (9), the microprocessor (9) is connected with LED lamp (18).

7. The power feeder switch remote arc fault test controller of claim 6, wherein, The shell (1) is integrally formed with a rectangular limiting groove (14) outside the air vent (3) provided with the dust screen (7), the dust screen (7) is limited in the rectangular limiting groove (14), the mouth of the rectangular limiting groove (14) is rotatably provided with a pressing piece (15), the pressing piece (15) is in close contact with the surface of the dust screen (7).

8. The power feeding switch remote earth leakage test controller according to claim 7, characterized in that, The bottom of the rectangular limiting groove (14) is fixedly connected with the pressing spring (16), the pressing spring (16) is fixedly connected with the fixed plate (17), and the fixed plate (17) is in close contact with the inner surface of the dust screen (7).

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