A suspended remote-controlled high-voltage test discharge grounding device installed in a pressure-equalizing cover

Abstract

The present invention relates to a suspended remote-controlled high-voltage test discharge grounding device, and in particular to a suspended remote-controlled high-voltage test discharge grounding device installed in a pressure equalizing cover, comprising a boosting device, a discharge control device and a discharge grounding device, wherein the pressure equalizing cover is suspended on a support frame and buckled on the top of the boosting device, the pressure equalizing cover is connected to the boosting device through a pressure equalizing cover connection line, a discharge control device is arranged in the pressure equalizing cover, and the discharge control device is connected to a discharge grounding device arranged below the pressure equalizing cover to form a discharge circuit. The device can meet the pressure equalizing effect of high-voltage test, has strong anti-interference ability, can realize long-distance, contactless discharge operation, and ensure the safety of operators and equipment.

Description

Technical Field

[0001] The invention relates to a suspended remote-controlled high-voltage test discharge grounding device, in particular to a suspended remote-controlled high-voltage test discharge grounding device installed in a pressure equalizing cover. Background Art

[0002] According to Article 14.1.7 of the Electric Power Safety Work Regulations (substation part), when changing the wiring or ending the test, the test power supply should be disconnected and discharged first, and the high-voltage part of the booster equipment should be discharged and short-circuited to ground; Article 14.1.8 of the Electric Power Safety Work Regulations (substation part) requires that large-capacitance test equipment without grounding wires should be discharged before testing, and when high-voltage DC tests are conducted, the equipment should be discharged to ground several times and short-circuited to ground at each end or at the end of the test. For safety reasons, the discharge time should generally be greater than the charging time.

[0003] When power equipment is subjected to high voltage tests such as lightning impulse, operating wave, AC withstand voltage and DC withstand voltage, the traditional method is to manually discharge repeatedly before and after these tests. When encountering electrical equipment with large capacitance, the discharge time is longer (this is because large capacitance equipment tests usually still have residual charge after several discharges). Since on-site tests require repeated close-range discharges with a discharge rod with resistance manually held in hand, it is not only inefficient, but also easy to cause electric shock injuries, which is a serious threat to personal safety. If a remote-controlled discharge device can be developed, personnel safety can be ensured, and test efficiency can also be improved. Summary of the invention

[0004] In order to ensure the safety of test personnel and the efficiency of equipment testing, a suspended remote-controlled high-voltage test discharge grounding device installed in a pressure-equalizing cover is invented. The technical solution is as follows:

[0005] A suspended remote-controlled high-voltage test discharge grounding device installed in a pressure equalizing cover comprises a boosting device, a discharge control device and a discharge grounding device. The pressure equalizing cover is suspended on a support frame and buckled on the top of the boosting device. The pressure equalizing cover is connected to the boosting equipment through a pressure equalizing cover connection line. A discharge control device is arranged in the pressure equalizing cover, and the discharge control device is connected to a discharge grounding device arranged below the pressure equalizing cover to form a discharge circuit.

[0006] The discharge control device includes a remote control device, a motor control device, a discharge wire retracting device and a variable speed conveyor belt. The remote control device is wiredly connected to the motor control device, the motor control device is transmission-connected to the discharge wire retracting device, and the discharge wire retracting device is movably connected to the variable speed conveyor belt.

[0007] The discharge grounding device includes a discharge wire, a magnetic button and a discharge grounding plate. One end of the discharge wire is connected to the variable speed transmission belt, and the other end is connected to the magnetic button. The magnetic button is magnetically connected to the discharge grounding plate arranged at the grounding position.

[0008] The discharge ground plate is connected to the buzzer.

[0009] The discharge line is provided with a discharge protection device and a current limiting resistor.

[0010] The discharge protection device is a point-to-plate discharge gap structure.

[0011] The pressure equalizing cover, the support frame fixed thereon and the connecting wire of the pressure equalizing cover are made of galvanized or aviation aluminum materials.

[0012] The pressure equalizing cover is a circular structure with a smooth surface and openings at the upper and lower ends.

[0013] The opening size at the lower end of the pressure equalizing hood matches the size of the top end of the boosting equipment.

[0014] The discharge grounding device determines whether the residual charge of the equipment under test is discharged through the discharge protection device and the buzzer, and can meet the requirements of AC withstand voltage and DC withstand voltage discharge.

[0015] The remote control device and the DC motor device are both powered by rechargeable lithium batteries. Due to the shielding of the voltage-equalizing cover, the remote control device and the DC motor control device have good anti-electromagnetic field interference capabilities.

[0016] It consists of a DC motor control device, a discharge wire retracting and releasing device and a variable speed conveyor belt to control the discharge wire speed and the rotation direction of the DC motor.

[0017] The discharge circuit composed of a discharge line, a discharge protection device, a current limiting resistor, a magnetic button, a buzzer and a discharge grounding plate connected in series can simultaneously meet the discharge requirements after AC withstand voltage and DC withstand voltage tests.

[0018] The length of the discharge line is adjustable, the discharge protection gap is adjustable, and the volume of the buzzer is adjustable, which can meet the application of booster equipment with different voltage levels and different heights.

[0019] The present invention is to develop a small-sized long-distance remote control discharge device, which can realize the discharge of electrical equipment after high-voltage test through long-distance remote control, and control the high-voltage test discharge process through the linkage of voltage-equalizing cover, remote control device, discharge line retracting device, DC motor device, discharge protection device, current limiting resistor, buzzer, discharge grounding plate and variable speed conveyor belt. The discharge process adopts two forms: current-limiting resistor and unlimited current resistor, that is, the first stage is to discharge first through the current-limiting resistor, and when the buzzer has no sound and the indicator light of the discharge protection device goes out, the second stage is to discharge the discharge line without the current-limiting resistor. The discharge line retracting device is installed on the support frame inside the voltage-equalizing cover, and the rotation of the retracting wheel is powered by the DC motor device through the variable speed conveyor belt. The end of the discharge line is connected through the magnetic button, buzzer and discharge grounding plate to ensure reliable discharge grounding.

[0020] The beneficial effects of the present invention include: being able to meet the pressure equalization effect of high-voltage tests, having strong anti-interference capability, being able to realize long-distance, contactless discharge operations, and ensuring the safety of operators and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the remote controller of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the pressure equalizing cover of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the elliptical pressure equalizing cover of the present invention;

[0025] Figure 5 This is a schematic diagram of the spherical pressure equalizing cover structure of the present invention;

[0026] Figure 6 This is an electrical connection diagram of the present invention;

[0027] In the figure, 1. booster device, 2. discharge wire retracting and releasing device, 3. motor control device, 4. power supply device, 5. remote control device, 6. discharge protection device, 7. discharge wire, 8. current limiting resistor, 9. voltage equalizing cover, 10. voltage equalizing cover connecting line, 11. magnetic button, 12. discharge grounding plate, 13. variable speed conveyor belt, 14. buzzer, 15. support frame, 16. remote control. DETAILED DESCRIPTION

[0028] Example 1

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the voltage-equalizing cover 9, the voltage-equalizing cover connecting line 10 and the support frame 15 are made of light metal material that is not prone to rust. Their main function is to install the discharge control device. Since it is installed on the support frame 15 and is at the same potential as the voltage-equalizing cover 9, it ensures that the suspended remote-controlled high-voltage test discharge grounding device is not interfered by the electromagnetic field, and can ensure the safe operation of the high-voltage test discharge grounding device under the condition of equal potential.

[0030] The pressure equalizing cover 9 is an elliptical structure with a smooth surface, and its function is to equalize the pressure and prevent sharp-angled burrs from discharging in external devices. Openings are set at the upper and lower ends. First, it is convenient for the hand to reach in from the upper opening to firmly connect the pressure equalizing cover connection line 10 with the boosting device 1; second, it reduces the manufacturing materials and reduces the weight; third, the size of the lower opening matches the size of the top of the boosting device 1, so that the transition between the pressure equalizing cover 9 and the boosting device 1 is smooth, the appearance is beautiful, and the pressure equalizing effect is better.

[0031] The power supply device 4 is provided with the required power by a 9V lithium battery equipped with a corresponding DC motor. The lithium battery is a rechargeable type. When the power is insufficient, it can be charged by an external charger. It should be taken out and properly stored when not in use for a long time.

[0032] The main functions of the motor control device 3, the discharge wire retracting device 2 and the variable speed conveyor belt 13 are to control the retracting speed of the discharge wire 7 and the rotation direction of the DC motor. When the discharge wire 7 is lowered by clockwise rotation, when the magnetic button 11 contacts the discharge grounding plate 12, the discharge starts, and the discharge current is connected in series to the magnetic button 11 through the current limiting resistor 8 to discharge to the ground. After the current limiting resistor 8 discharges for a certain period of time, that is, the discharge time should be greater than the charging time, the clockwise operation is continued until the discharge wire 7 at the rear end of the current limiting resistor 8 directly contacts the discharge grounding plate 12. At this time, it is direct discharge, and the discharge wire 7 is retracted by counterclockwise rotation.

[0033] The main function of the remote control device 5 is to receive long-distance remote control. In order to meet the maximum control distance of the controller, wireless signal transmission is adopted. 1-2 remote controllers 16 can be equipped as needed.

[0034] The inside of the discharge protection device 6 is a point-to-plate discharge gap, and the gap size can be adjusted according to the applied AC and DC test voltages to meet the discharge protection device 6. Whether the gap size is appropriate can be adjusted. The voltage discharge or current arcing in the gap can be observed from a distance to determine whether each test discharge is thorough.

[0035] The discharge wire 7 can be made of galvanized, chrome-plated or other metal materials with good electrical conductivity and whose surface is not prone to rust that affects the electrical conductivity.

[0036] The current limiting resistor 8 can be selected according to the voltage level in accordance with (0.1-0.5) Ω / V. Its function is to limit the current on the discharge line 7. If the discharge current is too large, it is easy to burn the equipment.

[0037] The magnetic button 11 mainly ensures that the discharge wire 7 can make good contact with the discharge grounding plate 12. The magnetic force and weight of the magnetic button 11 should be appropriately selected, and its weight should be determined according to the capacity of the DC motor to determine whether it meets the technical requirements.

[0038] Example 2

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the voltage-equalizing cover 9, the voltage-equalizing cover connecting wire 10 and the support frame 15 are made of galvanized material. The main functions are: one is voltage equalization to prevent sharp-angled burr discharge from external devices; the second is to install a discharge control device. Since the device is installed on the support frame 15 and has the same potential as the voltage-equalizing cover 9, it ensures that the suspended remote-controlled high-voltage test discharge grounding device is not interfered by the electromagnetic field, and can ensure the safe operation of the high-voltage test discharge grounding device under the condition of equal potential.

[0040] The pressure equalizing cover 9 is a spherical structure with a smooth surface. Its function is to equalize the pressure and prevent sharp-angled burrs from discharging in external devices. Openings are set at the upper and lower ends. First, it is convenient for the hand to reach in from the upper opening to firmly connect the pressure equalizing cover connection line 10 with the boosting device 1; second, it reduces the manufacturing materials and reduces the weight; third, the size of the lower opening matches the size of the top of the boosting device 1, so that the transition between the pressure equalizing cover 9 and the boosting device 1 is smooth, the appearance is beautiful, and the pressure equalizing effect is better.

[0041] The power supply device 4 is provided with the required power by a 9V lithium battery equipped with a corresponding DC motor. The lithium battery is a rechargeable type. When the power is insufficient, it can be charged by an external charger. It should be taken out and properly stored when not in use for a long time.

[0042] The main functions of the motor control device 3, the discharge wire retracting device 2 and the variable speed conveyor belt 13 are to control the retracting speed of the discharge wire 7 and the rotation direction of the DC motor. The discharge wire 7 is drooped by rotating clockwise to discharge without a current limiting resistor, that is, the clockwise operation is continued until the discharge wire 7 at the rear end of the current limiting resistor 8 directly contacts the discharge grounding plate 12, at which time it is direct discharge, and the discharge wire 7 is retracted by rotating counterclockwise.

[0043] The main function of the remote control device 5 is to receive long-distance remote control. In order to meet the maximum control distance of the controller (the distance can be selected according to needs), wireless signal transmission is adopted, and 1-2 remote controllers 16 can be configured according to needs.

[0044] The inside of the discharge protection device 6 is a point-to-plate discharge gap, and the gap size can be adjusted according to the applied AC and DC test voltages to meet the discharge protection device 6. Whether the gap size is appropriate can be adjusted. The voltage discharge or current arcing in the gap can be observed from a distance to determine whether each test discharge is thorough.

[0045] The discharge wire 7 needs to be made of galvanized, chrome-plated or other metal materials with good electrical conductivity and whose surface is not prone to rust that affects the electrical conductivity.

[0046] The current limiting resistor 8 can be selected according to the voltage level in accordance with (0.1-0.5) Ω / V, and its function is to limit the current on the discharge line 7 from being too large.

[0047] The magnetic button 11 mainly ensures that the discharge wire 7 can make good contact with the discharge grounding plate 12. The magnetic force and weight of the magnetic button 11 should be appropriately selected, and its weight should be determined according to the capacity of the DC motor to determine whether it meets the technical requirements.

[0048] Example 3

[0049] like Figure 6 The specific implementation process is as follows:

[0050] After the installation and wiring of the booster device 1 is completed, the suspended remote-controlled high-voltage test discharge grounding device is installed in the voltage-equalizing cover 9 on the support frame 15, and then buckled on the booster device 1, and the voltage-equalizing cover connection line 10 is connected to the booster device 1.

[0051] The discharge grounding plate 12 is installed at the grounding position at the bottom of the booster device 1, and the buzzer 14 is connected to the discharge grounding plate 12. The gap of the discharge protection device 6 is adjusted according to the voltage level of the tested equipment and the test type. At the same time, the position of the discharge wire retracting device 2 is adjusted so that when the discharge wire 7 droops, the magnetic button 11 can fall within the range of the discharge grounding plate 12.

[0052] During use, the test operator adjusts the length of the antenna of the remote controller 16 according to the distance of the boosting device 1 .

[0053] Example 4

[0054] During the test, when it is necessary to discharge equipment with large capacitance current such as power transformers, cables, etc., the remote controller 16 can be operated to transmit signals to the remote control device 5 through wireless transmission. The remote control device 5 issues instructions to the motor control device 3. The motor control device 3 controls the discharge wire retracting device 2 to rotate clockwise, so that the discharge wire 7 droops, and the magnetic button 11 falls on the discharge grounding plate 12 and is first discharged through the current limiting resistor 8. The buzzer 14 starts to sound. When the indicator light of the discharge protection device 6 is off and the buzzer 14 stops sounding, it proves that the residual charge has been discharged. Generally, the discharge time is greater than the charging time.

[0055] Example 5

[0056] During the test, when it is necessary to discharge devices with small capacitor charge storage capacity such as switches, knife switches, supporting insulators, porcelain bottles, etc., the remote control 16 can be operated to transmit signals to the remote control device 5 through wireless transmission. The remote control device 5 issues instructions to the motor control device 3. The motor control device 3 controls the discharge wire retracting device 2 to rotate clockwise to make the discharge wire 7 droop. After the magnetic button 11 falls on the discharge grounding plate 12, it continues to operate clockwise until the discharge wire 7 at the rear end of the current limiting resistor 8 directly contacts the discharge grounding plate 12. At this time, it is direct discharge, and the buzzer 14 starts to sound. When the indicator light of the discharge protection device 6 is off and the buzzer 14 stops sounding, it proves that the residual charge has been discharged. Generally, the discharge time is greater than the charging time.

[0057] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A remote-controlled high-voltage test discharge grounding device installed in a pressure-equalizing cover, comprising a boosting device (1), a discharge control device and a discharge grounding device, characterized in that The pressure equalizing cover (9) is suspended on a support frame (15) and buckled on the top of the boosting equipment (1). The pressure equalizing cover (9) is connected to the boosting equipment (1) via a pressure equalizing cover connection line (10). A discharge control device is arranged in the pressure equalizing cover (9). The discharge control device is connected to a discharge grounding device arranged below the pressure equalizing cover (9) to form a discharge circuit. The discharge control device comprises a remote control device (5), a motor control device (3), a discharge wire retracting device (2) and a variable speed conveyor belt (13); the remote control device (5) is connected to the motor control device (3) by wire, the motor control device (3) is connected to the discharge wire retracting device (2) by transmission, and the discharge wire retracting device (2) is movably connected to the variable speed conveyor belt (13); The discharge grounding device comprises a discharge wire (7), a magnetic button (11) and a discharge grounding plate (12); one end of the discharge wire (7) is connected to the variable speed conveyor belt (13), and the other end is connected to the magnetic button (11); the magnetic button (11) is magnetically connected to the discharge grounding plate (12) arranged at the grounding position; The discharge grounding plate (12) is connected to the buzzer (14); The discharge line (7) is provided with a discharge protection device (6) and a current limiting resistor (8); The discharge protection device (6) is a tip-to-plate discharge gap structure; The pressure equalizing cover (9) is a circular structure with a smooth surface and openings are provided at the upper and lower ends; The pressure equalizing cover (9), the support frame (15) and the pressure equalizing cover connecting line (10) are made of galvanized or aviation aluminum materials; When the device with a large capacitive current is discharged, the remote control device (5) issues a command to the motor control device (3), and the motor control device (3) controls the discharge wire retracting device (2) to rotate clockwise, so that the discharge wire (7) droops, and the magnetic button (11) falls on the discharge grounding plate (12) and is discharged through the current limiting resistor (8), and the buzzer (14) starts to sound. When the indicator light of the discharge protection device (6) is off and the buzzer (14) stops sounding, it proves that the residual charge has been discharged.

2. A remote-controlled high-voltage test discharge grounding device installed in a pressure-equalizing cover according to claim 1, characterized in that The size of the opening at the lower end of the pressure equalizing cover (9) matches the size of the top end of the boosting device (1).

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