A high-voltage discharge switch

Abstract

This invention provides a high-voltage discharge switch, comprising: a sliding rod; a push-pull device fixedly connected to the body of the sliding rod; an insulator fixedly connected to the other end of the sliding rod; a discharge electrode sleeved on the outside of the push-pull device and grounded; a movable electrode, one end fixed to the body of the insulator, the other end of the movable electrode disposed between the high-voltage electrode and the discharge electrode; a high-voltage electrode disposed close to the discharge electrode; and a grounding electrode disposed at the other end of the insulator. When the push-pull device moves the sliding rod a first distance towards one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the discharge electrode. When the push-pull device moves the sliding rod a second distance towards one end of the sliding rod, the movable electrode separates from the discharge electrode, and the grounding electrode contacts the high-voltage electrode. The second distance is greater than the first distance. This invention improves the efficiency of high-voltage capacitor discharge and grounding.

Description

Technical Field

[0001] This invention relates to a high-voltage discharge switch. Background Technology

[0002] With the development of national defense and civilian industries, capacitors and chargers are crucial components in many high-voltage tests. During or after the test, capacitors and chargers often carry residual charge. Therefore, during testing, the capacitors and chargers must be discharged to ensure personnel safety. High-voltage, high-capacity capacitors are widely used in pulse power applications. When a fault occurs in the capacitor discharge circuit, the capacitor must be discharged and its high-voltage terminal grounded before testing and repair can proceed.

[0003] Typically, a switch is connected in series with a high-impedance resistor to discharge the capacitor. The discharge time is relatively long, and after the discharge is completed, a grounding wire needs to be connected to the high-voltage end of the capacitor to ensure that there is no residual charge in the capacitor. The whole process is time-consuming and involves many steps, which is extremely inconvenient when there are many capacitors. Summary of the Invention

[0004] To address the technical problem of long discharge times caused by using switches in series with high-resistance resistors to discharge capacitors in existing capacitors or chargers, this invention provides a high-voltage discharge switch that improves the efficiency of high-voltage capacitor discharge and grounding.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] In a first aspect, embodiments of the present invention provide a high-voltage discharge switch, comprising:

[0007] Sliding rod;

[0008] The push-pull device is fixedly connected to the body of the sliding rod;

[0009] An insulator is fixedly connected to the other end of the sliding rod;

[0010] The discharge electrode is sleeved on the outside of the push-pull device and grounded.

[0011] The movable electrode has one end fixed to the body of the insulator, and the other end of the movable electrode is located between the high voltage electrode and the discharge electrode.

[0012] The high-voltage electrode is positioned close to the discharge electrode; and

[0013] The grounding electrode is located at the other end of the insulator;

[0014] When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the discharge electrode. When the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the movable electrode separates from the discharge electrode and the grounding electrode contacts the high-voltage electrode; the second distance is greater than the first distance.

[0015] Furthermore, the high-voltage discharge switch also includes a cavity; the sliding rod, push-pull device, insulator, discharge electrode, movable electrode, high-voltage electrode and grounding electrode are all disposed in the cavity;

[0016] The cavity includes: an insulating cover plate, and an input power terminal for supplying power to the push-pull device; and

[0017] The housing has an open structure at both ends. One open end of the housing is closed with an insulating cover plate, and the other open end of the housing is closed with a fixed base. One end of the sliding rod is slidably disposed in the sliding cavity of the insulating cover plate.

[0018] Furthermore, the discharge electrode includes:

[0019] Resistance wires are respectively installed on both sides of the push-pull device; one end of each resistance wire is grounded; and

[0020] The resistance wire contact electrode is used to connect the other end of each resistance wire.

[0021] When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the resistance wire contact electrode; when the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the other end of the movable electrode separates from the resistance wire contact electrode.

[0022] Furthermore, the high-voltage electrode includes:

[0023] The body is a hollow rectangular structure; and

[0024] Two ends are used to connect to external devices. One end of each end is connected to one end of the body, and the other end of each end is fixed to the housing and extends out of the housing.

[0025] The other side of the rectangular structure is used for contact connection at the other end of the active electrode.

[0026] Furthermore, the movable electrode includes: a frame with an opening on one side; the closed side of the frame is used for contact connection with the resistance wire contact electrode; and the connecting end at the opening of the frame is fixedly connected to the body of the insulator.

[0027] When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the metal spring on the closed side of the frame contacts the resistance wire contact electrode, and the metal spring at the connecting end contacts the other side of the rectangular structure; when the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the metal spring on the closed side of the frame separates from the resistance wire contact electrode, and the metal spring at the connecting end separates from the other side of the rectangular structure.

[0028] Furthermore, the push-pull device is a push-pull electromagnet.

[0029] Furthermore, the central axis of the sliding cavity of the insulating cover plate coincides with the central axis of the housing.

[0030] Furthermore, the input power terminal is used to connect to a 50Hz AC 220V power supply.

[0031] Furthermore, the housing is grounded, and the upper end of the resistance wire is connected to the housing.

[0032] Furthermore, the fixed base is grounded, and the fixed base is connected to the grounding electrode.

[0033] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects:

[0034] This invention discloses a high-voltage discharge switch comprising a sliding rod, a push-pull device, an insulator, a discharge electrode, a movable electrode, a high-voltage electrode, and a grounding electrode. When the push-pull device moves the sliding rod a first distance to one end, the other end of the movable electrode simultaneously contacts both the high-voltage electrode and the discharge electrode, thereby discharging the high-voltage current connected to the high-voltage electrode. When the push-pull device moves the sliding rod a second distance to one end, the movable electrode separates from the discharge electrode, and the grounding electrode contacts the high-voltage electrode, thus grounding the discharged high-voltage electrode. This solves the technical problem of long discharge times caused by using a switch in series with a high-resistance resistor to discharge capacitors in existing capacitor or charger systems, and improves the efficiency of high-voltage capacitor discharge and grounding. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of a high-voltage discharge switch.

[0037] The attached diagram shows the markings and corresponding component names:

[0038] 1-Insulating cover plate, 2-Input power supply terminal, 3-Sliding rod, 4-Push-pull electromagnet, 5-Resistance wire, 6-Housing, 7-Resistance wire contact electrode, 8-Moving electrode, 9-Insulator, 10-Fixed base, 11-Grounding electrode, 12-High voltage electrode. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are only for explaining this invention and are not intended to limit this invention.

[0040] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, circuits, materials, or methods have not been specifically described in order to avoid obscuring the invention.

[0041] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] In the description of this invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0043] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0044] Example

[0045] To address the technical problem of long discharge times caused by using switches in series with high-resistance resistors in existing capacitor or charger discharge systems, and to improve the efficiency of high-voltage capacitor discharge and grounding, this invention provides a high-voltage discharge switch, as described in the reference. Figure 1 As shown, it includes: a sliding rod 3; a push-pull device fixedly connected to the body of the sliding rod; an insulator 9 fixedly connected to the other end of the sliding rod; a discharge electrode sleeved on the outside of the push-pull device and grounded; a movable electrode 8, one end of which is fixed to the body of the insulator, and the other end of which is located between the high-voltage electrode and the discharge electrode; a high-voltage electrode 12 located close to the discharge electrode; and a grounding electrode 11 located at the other end of the insulator; when the push-pull device moves the sliding rod a first distance towards one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the discharge electrode; when the push-pull device moves the sliding rod a second distance towards one end of the sliding rod, the movable electrode separates from the discharge electrode and the grounding electrode contacts the high-voltage electrode; the second distance is greater than the first distance.

[0046] The other end of the sliding rod can be its lower end, the other end of the movable electrode can be its upper end, and the other end of the insulator can be its lower end. When the push-pull device moves the sliding rod a first distance towards its upper end, the upper end of the movable electrode simultaneously contacts the high-voltage electrode and the discharge electrode, initiating discharge. When the push-pull device moves the sliding rod a second distance towards one end, the upper end of the movable electrode separates from the discharge electrode, and the grounding electrode contacts the high-voltage electrode, completing grounding. The second distance is the distance reached by the push-pull device continuing to move in the original direction based on the first distance.

[0047] Therefore, this embodiment of the invention utilizes a sliding rod, a push-pull device, an insulator, a discharge electrode, a movable electrode, a high-voltage electrode, and a grounding electrode. When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the discharge electrode, thus achieving the discharge operation of the high-voltage current connected to the high-voltage electrode. When the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the movable electrode separates from the discharge electrode, and the grounding electrode contacts the high-voltage electrode, thus achieving the grounding operation of the discharged high-voltage electrode. This solves the technical problem of long discharge time caused by using a switch in series with a high-resistance resistor to discharge capacitors in existing capacitors or chargers, and improves the efficiency of high-voltage capacitor discharge and grounding.

[0048] Furthermore, the high-voltage discharge switch also includes a cavity; the sliding rod, push-pull device, insulator, discharge electrode, movable electrode, high-voltage electrode and grounding electrode are all disposed in the cavity;

[0049] The cavity includes: an insulating cover plate, and an input power terminal for supplying power to the push-pull device; and

[0050] The housing has an open structure at both ends. One open end of the housing is closed with an insulating cover plate, and the other open end of the housing is closed with a fixed base. One end of the sliding rod is slidably disposed in the sliding cavity of the insulating cover plate.

[0051] Furthermore, the discharge electrode includes:

[0052] Resistance wires are respectively installed on both sides of the push-pull device; one end of each resistance wire is grounded; and

[0053] The resistance wire contact electrode is used to connect the other end of each resistance wire.

[0054] When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the other end of the movable electrode simultaneously contacts the high-voltage electrode and the resistance wire contact electrode; when the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the other end of the movable electrode separates from the resistance wire contact electrode.

[0055] Furthermore, the high-voltage electrode includes:

[0056] The body is a hollow rectangular structure; and

[0057] Two ends are used to connect to external devices. One end of each end is connected to one end of the body, and the other end of each end is fixed to the housing and extends out of the housing.

[0058] The other side of the rectangular structure is used for contact connection at the other end of the active electrode.

[0059] Furthermore, the movable electrode includes: a frame with an opening on one side; the closed side of the frame is used for contact connection with the resistance wire contact electrode; and the connecting end at the opening of the frame is fixedly connected to the body of the insulator.

[0060] When the push-pull device moves the sliding rod a first distance to one end of the sliding rod, the metal spring on the closed side of the frame contacts the resistance wire contact electrode, and the metal spring at the connecting end contacts the other side of the rectangular structure; when the push-pull device moves the sliding rod a second distance to one end of the sliding rod, the metal spring on the closed side of the frame separates from the resistance wire contact electrode, and the metal spring at the connecting end separates from the other side of the rectangular structure.

[0061] Furthermore, the push-pull device is a push-pull electromagnet.

[0062] Furthermore, the central axis of the sliding cavity of the insulating cover plate coincides with the central axis of the housing.

[0063] Furthermore, the input power terminal is used to connect to a 50Hz AC 220V power supply.

[0064] Furthermore, the housing is grounded, and the upper end of the resistance wire is connected to the housing.

[0065] Furthermore, the fixed base is grounded, and the fixed base is connected to the grounding electrode.

[0066] Specifically, refer to Figure 1 As shown, the high-voltage discharge switch includes an insulating cover plate 1, an input power terminal 2, a sliding rod 3, a push-pull electromagnet 4, a resistance wire 5, a housing 6, a resistance wire contact electrode 7, a movable electrode 8, an insulator 9, a fixed base 10, a grounding electrode 11, and a high-voltage electrode 12.

[0067] The input power supply terminal 2 is installed on the push-pull electromagnet 4, which is installed under the insulating cover plate 1. The sliding rod 3 is in clearance fit with the push-pull electromagnet 4 and the insulating cover plate 1. The upper end of the insulator 9 is threaded with the sliding rod 3, and the lower end of the insulator 9 is threaded with the grounding electrode 11. The movable electrode 8 is bolted to the insulator 9, and the movable electrode 8 is in clearance fit with the resistance wire contact electrode 7 and the high-voltage electrode 12. First, the high-voltage electrode of the safety discharge switch is connected to the equipotential conductor (capacitor charging wire) of the high-voltage electrode of the main capacitor, and the input power supply is disconnected. The high-voltage discharge switch is in the completed de-energized state, and the capacitor main circuit is working. After the capacitor main circuit is working, the electromagnet power supply is turned on. The push-pull electromagnet 4 slowly pulls upward, causing the sliding rod 3 to slowly move upward. The sliding rod 3 causes the movable electrode 8 and the grounding electrode 11 to move upward. The upper end of the movable electrode 8 contacts the resistance wire contact electrode 7, and the lower end of the movable electrode 8 contacts the high-voltage electrode 12. The high voltage is discharged through the resistance wire 5. When the electromagnet power supply is turned on again, the push-pull electromagnet 4 is fully attracted, which drives the sliding rod 3 to move upward. The sliding rod 3 drives the grounding electrode 11 and the high-voltage electrode 12. When the grounding electrode 11 reaches the contact high-voltage electrode 12, it is completely short-circuited, realizing that the high-voltage electrode of the main capacitor is completely grounded and achieving complete discharge.

[0068] The contact method can be a metal spring contact method. By utilizing the elastic and flexible contact characteristics of the metal spring, the contact and disconnection between each component and the corresponding part can be achieved during the upward movement of the push-pull electromagnet.

[0069] The high-voltage discharge switch of this invention can be operated according to the following steps:

[0070] Step 1: Connect the high-voltage electrode of the safety discharge grounding switch to the equipotential conductor (capacitor charging wire) of the high-voltage electrode of the main capacitor, disconnect the input power supply, and the high-voltage discharge switch is in the completed de-energized state, and the capacitor main circuit is working;

[0071] Step 2: After the capacitor main circuit is completed, turn on the electromagnet power supply. The push-pull electromagnet 4 slowly attracts upward, causing the sliding rod 3 to move upward slowly. The sliding rod 3 causes the movable electrode 8 and the grounding electrode 11 to move upward. The upper end of the movable electrode 8 is located at the resistance wire contact electrode 7, and the lower end of the movable electrode 8 is located at the high voltage electrode 12. The high voltage is discharged through the resistance wire 5.

[0072] Step 3: Continue to turn on the electromagnet power supply. The push-pull electromagnet 4 is fully attracted, which drives the sliding rod 3 to move upward. The sliding rod 3 drives the grounding electrode 11 to contact the high-voltage electrode 12. The grounding electrode 11 and the high-voltage electrode 12 are completely short-circuited, realizing the complete grounding of the high-voltage electrode of the main capacitor and achieving complete discharge.

[0073] This invention achieves high-voltage discharge of up to 25kV simply, quickly, and stably by controlling the opening and closing of a 220V AC power switch directly connected to the electromagnet and adjusting the position of the grounding electrode. This invention is an independent and safe switch that does not affect the main circuit, operates stably, and has strong resistance to electromagnetic interference. The invention is compact, lightweight, and easier to operate.

[0074] Therefore, the embodiments of the present invention can simultaneously achieve rapid discharge and safe grounding of high-voltage, high-capacity capacitors. In large-scale capacitor application scenarios, it can significantly improve the efficiency of high-voltage capacitor discharge and grounding, ensuring the safety of maintenance personnel.

[0075] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-voltage discharge switch, characterized in that, include: Sliding rod; The push-pull device is located at the upper end of the sliding rod and can drive the sliding rod to move up and down; An insulator is fixedly connected to the lower end of the sliding rod; The discharge electrode includes: resistance wires respectively disposed on both sides of the push-pull device; wherein one end of each resistance wire is grounded; and a resistance wire contact electrode for connecting the other end of each resistance wire. The movable electrode has its lower end fixed to the middle of the insulator, and its upper end is located between the high-voltage electrode and the discharge electrode. The movable electrode includes: a frame with an opening on one side; the closed side of the frame is used for contact connection with the resistance wire contact electrode; the connection end at the opening of the frame is fixedly connected to the middle part of the insulator; The high-voltage electrode is positioned close to the discharge electrode; and The grounding electrode is fixedly located at the lower end of the insulator. When the push-pull device moves the sliding rod a first distance to the upper end of the sliding rod, the upper end of the movable electrode contacts the high-voltage electrode and the discharge electrode simultaneously. When the push-pull device continues to move the sliding rod a second distance to the upper end of the sliding rod, the movable electrode separates from the discharge electrode and the high-voltage electrode, and the grounding electrode contacts the high-voltage electrode. The second distance is greater than the first distance.

2. The high-voltage discharge switch as described in claim 1, characterized in that, It also includes a cavity; a sliding rod, a push-pull device, an insulator, a discharge electrode, a movable electrode, a high-voltage electrode, and a grounding electrode are all disposed within the cavity; The cavity includes: an insulating cover plate, and an input power terminal for supplying power to the push-pull device; and The housing has an open structure at both ends. One open end of the housing is closed with an insulating cover plate, and the other open end of the housing is closed with a fixed base. One end of the sliding rod is slidably disposed in the sliding cavity of the insulating cover plate.

3. The high-voltage discharge switch as described in claim 2, characterized in that, When the push-pull device moves the sliding rod a first distance to the upper end of the sliding rod, the upper end of the movable electrode simultaneously contacts the high-voltage electrode and the resistance wire contact electrode; when the push-pull device continues to move the sliding rod a second distance to the upper end of the sliding rod, the upper end of the movable electrode separates from the resistance wire contact electrode.

4. The high-voltage discharge switch as described in claim 3, characterized in that, The high-voltage electrodes include: The body is a hollow rectangular structure; and Two ends are used to connect to external devices. One end of each end is connected to one end of the body, and the other end of each end is fixed to the housing and extends out of the housing. The other side of the rectangular structure is used for contact connection with the upper end of the active electrode.

5. The high-voltage discharge switch as described in claim 4, characterized in that, When the push-pull device moves the sliding rod a first distance to the upper end of the sliding rod, the metal spring on the closed side of the frame contacts the resistance wire contact electrode, and the metal spring at the connecting end contacts the other side of the high-voltage electrode rectangular structure; when the push-pull device moves the sliding rod a second distance to the upper end of the sliding rod, the metal spring on the closed side of the frame separates from the resistance wire contact electrode, and the metal spring at the connecting end separates from the other side of the rectangular structure.

6. The high-voltage discharge switch as described in any one of claims 1-5, characterized in that, The push-pull device is a push-pull electromagnet.

7. The high-voltage discharge switch as described in claim 6, characterized in that, The central axis of the sliding cavity of the insulating cover plate coincides with the central axis of the housing.

8. The high-voltage discharge switch as described in claim 2, characterized in that, The input power terminal is used to connect to a 50Hz AC 220V power supply.

9. The high-voltage discharge switch as described in claim 2, characterized in that, The housing is grounded, and the upper end of the resistance wire is connected to the housing.

10. The high-voltage discharge switch as described in claim 2, characterized in that, The fixed base is grounded, and the fixed base is connected to the grounding electrode.

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