Remotely-controlled high-voltage safe discharge device

Abstract

The utility model discloses a remotely-controlled high-voltage safe discharge device, which relates to the technical field of high-voltage insulation and comprises a case, a voltage equalizing plate and a discharge electrode high-voltage end, a pneumatic mechanism is arranged in the case, and the top of the outer wall of the case is fixedly sleeved with a supporting plate. A protection mechanism used for further enhancing safety during discharging is arranged between the supporting disc and the voltage equalizing disc. Through the arrangement of the pneumatic mechanism, the discharge electrode high-voltage end and the discharge electrode low-voltage end, on the premise of ensuring normal discharge of the capacitor high-voltage terminal, a remote pneumatic control mode is adopted, so that the discharge electrode low-voltage end firstly approaches to form an electric arc and then contacts to completely discharge, and the discharge effect is improved. Personnel can be prevented from entering the test chamber in a capacitor high-voltage state, electric injury is prevented, personal safety is guaranteed, the lifting speed of the low-voltage end of the discharge electrode can be pneumatically controlled, and excessive ablation caused by rapid contact between the low-voltage end of the discharge electrode and the high-voltage end of the discharge electrode is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage insulation, in particular to a remote-controlled high-voltage safety discharge device. Background Art

[0002] Existing capacitors are discharged after high-voltage testing. Most of them are manually held with an insulating rod to bring the low-voltage end of the discharge circuit close to the high-voltage test end, and discharge through the water resistance or resistance of the discharge circuit. During the process, people must enter the high-voltage test room and strictly follow the operating requirements and maintain a safe distance to discharge the capacitor. However, because the high voltage reaches 100kV or even 120kV, there is still a great safety risk. Utility Model Content

[0003] In order to solve the above technical problems, a remote-controlled high-voltage safety discharge device is provided, which solves the problem that in the prior art, people must enter the high-voltage test room during the discharge process, strictly follow the operating requirements, and maintain a safe distance to discharge the capacitor. However, because the high voltage reaches 100kV or even 120kV, there is still a great safety risk.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a remote-controlled high-voltage safety discharge device, comprising a chassis with a cavity inside, a voltage-equalizing plate arranged above the chassis, and a high-voltage end of a discharge electrode installed on the voltage-equalizing plate, two insulating support rods are fixedly connected between the voltage-equalizing plate and the chassis, and a low-voltage end of a discharge electrode corresponding to the high-voltage end of the discharge electrode is slidably arranged between the two insulating support rods, a pneumatic mechanism for acting on the lifting and lowering activities of the low-voltage end of the discharge electrode is arranged in the chassis, a support plate is fastened and sleeved on the top of the outer wall of the chassis, and a protective mechanism for further enhancing the safety during discharge is arranged between the support plate and the voltage-equalizing plate;

[0005] The protection mechanism includes a fixed glass plate vertically fixed in a semi-circular shape between the support plate and the equalizing plate, a movable glass plate slidingly arranged on the inner wall of the fixed glass plate in a semi-circular shape, and a power component arranged on the inner side of the movable glass plate for controlling the deflection of the movable glass plate.

[0006] Preferably, the power component includes an arc-shaped toothed plate fixed to the bottom of the inner wall of the movable glass plate and an insulating rotating rod vertically rotatably arranged on the top surface of the support plate, and the bottom of the insulating rotating rod body is fastened with a transmission gear meshing with the inner tooth surface of the arc-shaped toothed plate.

[0007] Preferably, the power component further comprises an external threaded barrel which is tightly sleeved on the body of the insulating rotating rod and a movable plate which is threadedly sleeved on the outer wall of the external threaded barrel.

[0008] Preferably, a support seat is fixed to the outer periphery of the pressure equalizing plate, and a transmission rod is rotatably penetrated through the inner wall of the support seat and the inner wall at the edge of the pressure equalizing plate, and the bottom ends of the two transmission rods are detachably connected with brush sticks, and the two brush sticks are respectively attached to the inner and outer walls of the movable glass plate.

[0009] Preferably, the end of the insulating rotating rod rotates through the equalizing plate and is connected to one of the transmission rods by a first transmission belt, and the top ends of the two transmission rods are connected by a second transmission belt.

[0010] Preferably, an insulating shell is clamped on the outside of the brush stick located on the inner side of the movable glass plate, a movable rotating rod is fixedly penetrated through the inner wall of one end of the insulating shell, and the top end of the movable rotating rod rotates and penetrates the pressure equalizing plate.

[0011] Preferably, a fixed sleeve is sleeved on the rod body of the movable rotating rod located above the pressure equalizing plate, and a torsion spring is also sleeved on the rod body of the movable rotating rod located inside the fixed sleeve, one end of the torsion spring is fixedly connected to the rod body of the movable rotating rod, and the other end of the torsion spring is fixedly connected to the inner wall of the fixed sleeve.

[0012] Preferably, the bottom end of the transmission rod is sleeved with a slide groove fixed to the top end of the brush rod, and a thread is penetrated through the outer wall of the slide groove, and a fixing hole matching with the thread is opened on the rod body of the transmission rod.

[0013] Preferably, a slide groove is provided at the edge of the corresponding side of the support plate and the pressure equalizing plate, and a slide column fixed to the end surface of the movable glass plate is slidably arranged in the slide groove.

[0014] Preferably, the pneumatic mechanism comprises a multi-stage cylinder disposed in the chassis, and a telescopic end of the multi-stage cylinder passes through the chassis and is fixed to the low-pressure end of the discharge electrode.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] (1) Through the setting of the pneumatic mechanism, the high-voltage end of the discharge electrode and the low-voltage end of the discharge electrode, under the premise of ensuring the normal discharge of the high-voltage terminal of the capacitor, the remote pneumatic control method is adopted to make the low-voltage end of the discharge electrode approach to form an arc first, and then contact to discharge completely. This can not only prevent personnel from entering the test room when the capacitor is in a high-voltage state, prevent electric shock and ensure personal safety, but also use pneumatic control to control the lifting speed of the low-voltage end of the discharge electrode to prevent the rapid contact between the low-voltage end of the discharge electrode and the high-voltage end of the discharge electrode to cause transitional ablation.

[0017] (2) Through the setting of the protection mechanism, when the low-voltage end of the discharge electrode gradually rises and approaches the high-voltage end of the discharge electrode under the action of the pneumatic multi-stage cylinder, the movable plate can synchronously slide up along the outer wall of the external threaded tube, and then the threaded structure between the two drives the insulating rotating rod to rotate, so that the transmission gear can engage with the arc-shaped toothed plate, thereby the movable glass plate is deflected outward from the inside of the fixed glass plate by force until it moves to form a cylindrical structure with the fixed glass plate, thereby hiding and protecting the low-voltage end and the high-voltage end of the discharge electrode, thereby limiting the spread of the arc generated when the low-voltage end of the discharge electrode approaches the high-voltage end of the discharge electrode, so as to prevent the arc from spreading and injuring observers near the chassis, thereby further improving the safety of the device during operation.

[0018] (3) Through the brush rod setting, when the movable glass plate is deflected outward from the inner side of the fixed glass plate by force during the rising process of the low-voltage end of the discharge electrode, the rotating insulating rotating rod can use the first transmission belt to drive one of the transmission rods, prompting the transmission rod to synchronously drive the other transmission rod by the second transmission belt, thereby causing the two brush rods to rotate on the inner and outer walls of the movable glass plate, scraping and cleaning the dust and impurities attached to the inner and outer walls of the movable glass plate, thereby ensuring the clarity of the personnel observing the discharge process through the movable glass plate.

[0019] (4) By setting up the insulating shell, the brush rod located inside the movable glass plate can be effectively protected to prevent the brush rod from being hit by the arc generated when the low-voltage end of the discharge electrode approaches the high-voltage end of the discharge electrode inside the movable glass plate, causing burning and affecting the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the chassis of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the brush stick and the transmission rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the insulating shell of the utility model;

[0024] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0025] The numbers in the figure are:

[0026] 1. Chassis; 2. Support plate; 3. Voltage equalizing plate; 4. Insulating support rod; 5. Low-voltage end of discharge electrode; 6. High-voltage end of discharge electrode; 7. Multi-stage cylinder; 8. Fixed glass plate; 9. Movable glass plate; 10. Insulating rotating rod; 11. Transmission gear; 12. Arc tooth plate; 13. External threaded cylinder; 14. Movable plate; 15. Brush stick; 16. Support seat; 17. Transmission rod; 18. First transmission belt; 19. Second transmission belt; 20. Movable rotating rod; 21. Insulating shell; 22. Fixed sleeve; 23. Torsion spring; 24. Slide groove. DETAILED DESCRIPTION

[0027] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0028] Reference Figure 1-5 As shown, a remote-controlled high-voltage safety discharge device comprises a chassis 1 with a cavity inside, a voltage-equalizing plate 3 arranged above the chassis 1, and a discharge electrode high-voltage end 6 installed on the voltage-equalizing plate 3, two insulating support rods 4 are fixedly connected between the voltage-equalizing plate 3 and the chassis 1, and a discharge electrode low-voltage end 5 corresponding to the discharge electrode high-voltage end 6 is slidably arranged between the two insulating support rods 4, a pneumatic mechanism for lifting and lowering the discharge electrode low-voltage end 5 is arranged in the chassis 1, the discharge electrode low-voltage end 5 is externally connected to a discharge hydroelectric group, and the discharge electrode high-voltage end 6 is externally connected to a capacitor high-voltage terminal;

[0029] The pneumatic mechanism includes a multi-stage cylinder 7 disposed in the chassis 1, the telescopic end of the multi-stage cylinder 7 passes through the chassis 1 and is fixed to the low-voltage end 5 of the discharge electrode, and the multi-stage cylinder 7 is externally connected to a remote control switch;

[0030] Through the arrangement of the pneumatic mechanism, the high-voltage end 6 of the discharge electrode and the low-voltage end 5 of the discharge electrode, the multi-stage cylinder 7 is started to make the low-voltage end 5 of the discharge electrode rise slowly. During this period, when the low-voltage end 5 of the discharge electrode approaches the high-voltage end 6 of the discharge electrode, an arc that breaks through the air is formed between the low-voltage end 5 of the discharge electrode and the high-voltage end 6 of the discharge electrode. When the low-voltage end 5 of the discharge electrode rises to contact the high-voltage end 6 of the discharge electrode, the low-voltage end 5 of the discharge electrode can completely release the residual charge. On the contrary, the low-voltage end 5 of the discharge electrode is lowered to separate the high-voltage end 6 of the discharge electrode from the low-voltage end 5 of the discharge electrode and form a maximum electrical gap, so as to prepare for the next safe discharge. Therefore, under the premise of ensuring the normal discharge of the high-voltage terminal of the capacitor, the remote pneumatic control method is adopted to make the low-voltage end 5 of the discharge electrode approach to form an arc first, and then contact to discharge completely. This can prevent personnel from entering the test room under the high-voltage state of the capacitor, prevent electric shock and ensure personal safety, and use pneumatic control to control the lifting speed of the low-voltage end 5 of the discharge electrode to prevent the low-voltage end 5 of the discharge electrode from contacting the high-voltage end 6 of the discharge electrode quickly to cause transitional ablation.

[0031] In addition, refer to Figure 1 As shown, it is worth noting that a support plate 2 is tightly sleeved on the top of the outer wall of the chassis 1, and a protection mechanism for further enhancing the safety during discharge is provided between the support plate 2 and the voltage equalizing plate 3;

[0032] The protection mechanism includes a fixed glass plate 8 vertically fixed between the support plate 2 and the pressure equalizing plate 3 in a semi-circular shape, a movable glass plate 9 slidingly arranged on the inner wall of the fixed glass plate 8 in a semi-circular shape, and a power component arranged on the inner side of the movable glass plate 9 for controlling the deflection of the movable glass plate 9;

[0033] The power component includes an arc-shaped toothed plate 12 fixed to the bottom of the inner wall of the movable glass plate 9 and an insulating rotating rod 10 vertically rotatably arranged on the top surface of the supporting plate 2. The bottom of the insulating rotating rod 10 is tightly sleeved with a transmission gear 11 meshing with the inner tooth surface of the arc-shaped toothed plate 12;

[0034] The power component also includes an external threaded barrel 13 that is tightly sleeved on the rod body of the insulating rotating rod 10 and a movable plate 14 that is threadedly sleeved on the outer wall of the external threaded barrel 13, and the movable plate 14 is fixed on the telescopic rod of the multi-stage cylinder 7;

[0035] By setting the protection mechanism, in the process that the pneumatic multi-stage cylinder 7 acts on the discharge electrode low-voltage end 5 to gradually rise and approach the discharge electrode high-voltage end 6, the movable plate 14 can synchronously slide up along the outer wall of the external threaded tube 13, and then the two are driven to rotate by the threaded structure, so that the transmission gear 11 can engage with the arc-shaped tooth plate 12, thereby the movable glass plate 9 is forced to deflect outward from the inside of the fixed glass plate 8 until it moves to form a cylindrical structure with the fixed glass plate 8, so that the discharge electrode low-voltage end 5 and the discharge electrode high-voltage end 6 are hidden and protected, thereby limiting the spread of the arc generated when the discharge electrode low-voltage end 5 approaches the discharge electrode high-voltage end 6, so as to prevent the arc from spreading and injuring observers near the chassis 1, and further improve the safety of the device during operation.

[0036] Further, refer to Figure 1 As shown, it is worth noting that a slide groove 24 is provided at the edge of the corresponding side of the support plate 2 and the pressure equalizing plate 3, and a slide column fixed to the end face of the movable glass plate 9 is slidably arranged in the slide groove 24;

[0037] By setting the slide groove 24 and the slide column, when the movable glass plate 9 is deflected outward from the inner side of the fixed glass plate 8 by force, the slide column can slide synchronously in the slide groove 24, so that the slide groove 24 and the slide column can limit the moving trajectory of the movable glass plate 9, ensuring the stability of the movable glass plate 9 when moving.

[0038] Further, refer to Figure 1 and Figure 3 As shown, it is worth noting that a support seat 16 is fixed to the outer periphery of the pressure equalizing plate 3, and a transmission rod 17 is rotatably penetrated in the inner wall of the support seat 16 and the inner wall at the edge of the pressure equalizing plate 3, and the bottom ends of the two transmission rods 17 are detachably connected with brush rods 15, and the two brush rods 15 are respectively attached to the inner and outer walls of the movable glass plate 9;

[0039] The end of the insulating rotating rod 10 rotates and passes through the equalizing plate 3 and is connected to the shaft of one of the transmission rods 17 by a first transmission belt 18, and the top ends of the two transmission rods 17 are connected to the second transmission belt 19;

[0040] By setting the brush rod 15, when the movable glass plate 9 is deflected outward from the inner side of the fixed glass plate 8 by the force during the rising process of the low-voltage end 5 of the discharge electrode, the rotating insulating rotating rod 10 can use the first transmission belt 18 to drive one of the transmission rods 17, prompting the transmission rod 17 to synchronously drive the other transmission rod 17 by the second transmission belt 19, thereby causing the two brush rods 15 to rotate on the inner and outer walls of the movable glass plate 9, scraping and cleaning the dust and impurities attached to the inner and outer walls of the movable glass plate 9, and ensuring the clarity of the personnel observing the discharge process through the movable glass plate 9.

[0041] Further, refer to Figure 3 As shown, it is worth noting that the bottom end of the transmission rod 17 is sleeved with a slide groove 24 fixed to the top of the brush rod 15, and a thread 025 is threaded through the outer wall of the slide groove 24, and a fixing hole adapted to 025 is opened on the rod body of the transmission rod 17;

[0042] The knob 025 is turned so that 025 is withdrawn from the fixing hole under the threaded structure, thereby releasing the fixing effect between the slide groove 24 and the transmission rod 17, thereby facilitating manual replacement of the brush rod 15 and cleaning the brush rod 15.

[0043] Further, refer to Figure 1 , Figure 4 as well as Figure 5 As shown, it is worth noting that an insulating shell 21 is clamped outside the brush stick 15 located inside the movable glass plate 9, and a movable rotating rod 20 is fixedly penetrated through the inner wall of one end of the insulating shell 21, and the top end of the movable rotating rod 20 rotates and penetrates the pressure equalizing plate 3;

[0044] By setting the insulating shell 21, the brush rod 15 located inside the movable glass plate 9 can be effectively protected to prevent the brush rod 15 from being hit by the arc generated when the low-voltage end 5 of the discharge electrode approaches the high-voltage end 6 of the discharge electrode inside the movable glass plate 9, causing burning and affecting the use effect.

[0045] Further, refer to Figure 4As shown, it is worth noting that a fixed sleeve 22 is sleeved on the rod body of the movable rotating rod 20 located above the pressure equalizing plate 3, and a torsion spring 23 is sleeved on the rod body of the movable rotating rod 20 located inside the fixed sleeve 22. One end of the torsion spring 23 is fixedly connected to the rod body of the movable rotating rod 20, and the other end of the torsion spring 23 is fixedly connected to the inner wall of the fixed sleeve 22.

[0046] By setting the torsion spring 23 and the fixed sleeve 22, the insulating shell 21 is pushed outward, so that the movable rotating rod 20 is forced to rotate inside the fixed sleeve 22 and twist the torsion spring 23 to deform. In this way, the insulating shell 21 is opened, which is convenient for manual replacement of the brush stick 15 inside it. Conversely, when the pushing of the insulating shell 21 is released, the movable rotating rod 20 can carry the insulating shell 21 under the elastic force of the torsion spring 23 to quickly return to rotation and cover the brush stick 15, so that the brush stick 15 can be hidden and protected.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A remote-controlled high-voltage safety discharge device, characterized in that: The invention comprises a case (1) with a hollow interior, a voltage equalizing plate (3) arranged above the case (1), and a discharge electrode high-voltage end (6) mounted on the voltage equalizing plate (3); two insulating support rods (4) are fixedly connected between the voltage equalizing plate (3) and the case (1); a discharge electrode low-voltage end (5) corresponding to the discharge electrode high-voltage end (6) is slidably arranged between the two insulating support rods (4); a pneumatic mechanism for causing the discharge electrode low-voltage end (5) to move upward and downward is arranged in the case (1); a support plate (2) is tightly sleeved on the top of the outer wall of the case (1); and a protective mechanism for further enhancing safety during discharge is arranged between the support plate (2) and the voltage equalizing plate (3); The protection mechanism comprises a fixed glass plate (8) vertically fixed in a semi-circular shape between the support plate (2) and the pressure equalizing plate (3), a movable glass plate (9) slidingly arranged on the inner wall of the fixed glass plate (8) in a semi-circular shape, and a power component arranged on the inner side of the movable glass plate (9) for controlling the deflection of the movable glass plate (9).

2. A remote-controlled high-voltage safety discharge device according to claim 1, characterized in that: The power component comprises an arc-shaped toothed plate (12) fixed to the bottom of the inner wall of the movable glass plate (9) and an insulating rotating rod (10) vertically rotatably arranged on the top surface of the supporting plate (2); a transmission gear (11) meshing with the inner tooth surface of the arc-shaped toothed plate (12) is tightly sleeved on the bottom of the rod body of the insulating rotating rod (10).

3. A remote-controlled high-voltage safety discharge device according to claim 2, characterized in that: The power component also includes an external threaded barrel (13) that is tightly sleeved on the rod body of the insulating rotating rod (10) and a movable plate (14) that is threadedly sleeved on the outer wall of the external threaded barrel (13).

4. A remote-controlled high-voltage safety discharge device according to claim 3, characterized in that: A support seat (16) is fixed on the outer periphery of the pressure equalizing plate (3), and a transmission rod (17) is rotatably passed through the inner wall of the support seat (16) and the inner wall at the edge of the pressure equalizing plate (3), and the bottom ends of the two transmission rods (17) are detachably connected with brush rods (15), and the two brush rods (15) are respectively attached to the inner and outer walls of the movable glass plate (9).

5. A remote-controlled high-voltage safety discharge device according to claim 4, characterized in that: The end of the insulating rotating rod (10) rotates to pass through the equalizing plate (3) and is connected to the rod body of one of the transmission rods (17) via a first transmission belt (18), and the top ends of the two transmission rods (17) are connected to the top ends via a second transmission belt (19).

6. A remote-controlled high-voltage safety discharge device according to claim 4, characterized in that: The brush stick (15) located on the inner side of the movable glass plate (9) is externally clamped with an insulating shell (21), and a movable rotating rod (20) is fixedly penetrated through the inner wall of one end of the insulating shell (21), and the top end of the movable rotating rod (20) rotates and penetrates the pressure equalizing plate (3).

7. A remote-controlled high-voltage safety discharge device according to claim 6, characterized in that: The movable rotating rod (20) is provided with a fixed sleeve (22) on the rod body located above the pressure equalizing plate (3), and the movable rotating rod (20) is also provided with a torsion spring (23) on the rod body located inside the fixed sleeve (22). One end of the torsion spring (23) is fixedly connected to the rod body of the movable rotating rod (20), and the other end of the torsion spring (23) is fixedly connected to the inner wall of the fixed sleeve (22).

8. A remote-controlled high-voltage safety discharge device according to claim 4, characterized in that: The bottom end of the transmission rod (17) is sleeved with a slide groove (24) fixed to the top end of the brush rod (15), a threaded hole 025 is threadedly penetrated on the outer wall of the slide groove (24), and a fixing hole matched with the 025 is opened on the rod body of the transmission rod (17).

9. A remote-controlled high-voltage safety discharge device according to claim 1, characterized in that: A slide groove (24) is provided at the edge of the corresponding side of the support plate (2) and the pressure equalizing plate (3), and a slide column fixed to the end surface of the movable glass plate (9) is slidably arranged in the slide groove (24).

10. A remote-controlled high-voltage safety discharge device according to claim 1, characterized in that: The pneumatic mechanism comprises a multi-stage cylinder (7) arranged in the chassis (1), the telescopic end of the multi-stage cylinder (7) passing through the chassis (1) and being fixed to the low-voltage end (5) of the discharge electrode.

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