Triggering type high-speed closing device

Abstract

The invention belongs to the field of road construction, and mainly relates to a trigger type high-speed closing device which comprises a control module and a closing device body, and the control module is connected with the body and controls closing of the body; the body of the closing device comprises a static contact, a moving contact and a composite jacket; the static contact, the paired moving contact and an air gap between the two contacts form a closing switch, and the closing switch is covered with the composite jacket; when the static contact is in contact with the moving contact, the control module discharges, the closing switch is closed, and the circuit is switched on; and when the static contact is separated from the moving contact, the closing switch is switched off. According to the invention, the advantage of high-speed closing of the trigger gap is reserved, the long-time through-current capability is increased, and the independent use condition is provided; and control is simplified, the cost is reduced, the size is reduced, and rapid bypass control and protection application in a novel power system is facilitated.

Description

Technical Field

[0001] This invention relates to the field of high-voltage electrical appliances in power systems, and more particularly to a trigger-type high-speed closing device. Background Technology

[0002] With the rapid development of power systems and the increasing complexity of grid structures, faults develop quickly and sensitive loads increase, requiring sub-millisecond-level high-speed closing devices to meet the needs of fast control and bypass protection.

[0003] Traditional mechanical switches have reached their limits in terms of closing speed and still cannot meet the requirements. Trigger-gap type closing devices can achieve high-speed closing, but they do not have long-term current carrying capacity and still require mechanical switches to assist in arc extinguishing. They cannot be used independently, which increases the cost, size and control complexity of the equipment. Summary of the Invention

[0004] To address the above issues, this invention proposes a trigger-type closing device that possesses long-term current-carrying capability and sub-millisecond closing capability, and can be used independently in high-speed closing or fault bypass protection scenarios.

[0005] This application proposes a trigger-type high-speed closing device, characterized in that it includes: a control module and a closing device body, wherein the control module is connected to the body and controls the closing of the body;

[0006] The closing device body includes: a stationary contact, a moving contact, and a composite outer sleeve;

[0007] The stationary contact, the paired moving contact, and the air gap between the two contacts constitute a closing switch, and the closing switch is covered by the composite jacket.

[0008] The stationary contact is fixed inside the composite jacket and is used to connect to the high voltage.

[0009] The moving contact is mounted vertically within the composite jacket and is used to connect to the low-voltage outgoing line;

[0010] When the stationary contact is in contact with the moving contact, the control module discharges, and the closing switch is turned on; when the stationary contact is separated from the moving contact, the closing switch is turned off.

[0011] Furthermore, the stationary contact has a convex center and flat sides; the moving contact has a concave center and flat sides; the convex shape of the stationary contact matches the concave shape of the moving contact.

[0012] Furthermore, the moving contact is embedded with a trigger, and the injection port of the trigger is located at the concave center of the moving contact.

[0013] Furthermore, both the convex portion of the stationary contact and the concave portion of the moving contact are made of CuW. 80 Both the stationary contact and the moving contact plate portion are made of CuCr. 30 Made of materials.

[0014] Furthermore, the control module is located outside the composite jacket and connected to the main body;

[0015] The control module includes a transmission module, a trigger module, and a controller. The controller is connected to the moving contact of the main body through the transmission module and the trigger module, respectively. The controller controls the trigger module and the transmission module to realize the closing of the closing device.

[0016] Furthermore, one end of the transmission module is connected to the controller, and the other end is connected to the moving contact; the transmission module is used to drive the moving contact to move up and down.

[0017] The transmission module drives the moving contact to rise and connect with the stationary contact; the transmission module also drives the moving contact to fall and disconnect from the stationary contact.

[0018] A flexible tube is fitted at the connection point between the moving contact and the transmission module, and the flexible tube is placed inside the composite jacket.

[0019] Furthermore, the hose is a corrugated pipe.

[0020] Furthermore, the transmission module employs a spring mechanism, a permanent magnet mechanism, or a disconnectable rapid electromagnetic repulsion mechanism.

[0021] Furthermore, one end of the trigger module is connected to the controller, and the other end is connected to the trigger of the moving contact;

[0022] After receiving a command from the controller, the trigger module discharges, thereby enabling the circuit between the moving contact and the stationary contact to be connected.

[0023] Furthermore, the trigger module is a capacitor discharge circuit. After receiving the controller command, the trigger module discharges to generate a high-voltage trigger pulse to the trigger inside the moving contact. The trigger generates plasma, which is then ejected from the injection port to the stationary contact, thereby realizing the discharge and conduction of the closing device.

[0024] The beneficial effects of the present invention are as follows: The trigger-type sub-millisecond closing device proposed in the present invention not only retains the advantages of high-speed closing of the trigger gap, but also increases the long-term current carrying capacity, has the conditions for independent use, and simplifies control, reduces costs and reduces size, which is more conducive to fast bypass control and protection applications in new power systems. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic flowchart of a trigger-type high-speed closing device provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of a trigger-type high-speed closing device provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the opening and closing of a trigger-type high-speed closing device provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of an embodiment of a trigger-type high-speed closing device provided in this application.

[0030] 1. Body; 10. Close / Close switch; 11. Stationary contact; 111. Protruding stationary contact; 112. Flat stationary contact; 12. Moving contact; 121. Recessed moving contact; 122. Flat moving contact; 13. Air gap; 14. Composite jacket; 15. Trigger; 151. Injection port; 16. Hose; 2. Control module; 21. Controller; 22. Transmission module; 23. Trigger module; 3. High-voltage inlet; 4. Low-voltage outlet. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other implementations obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. In the various drawings, the same elements are represented by the same or similar reference numerals, and for clarity, the various parts in the drawings are not drawn to scale.

[0032] See Figure 1-4As shown, this application proposes a trigger-type high-speed closing device, characterized in that it includes: a control module 2 and a closing device body 1. The control module 2 is connected to the body 1 and controls the body 1 to complete the closing of the device. The closing device is "closed," meaning the switch is in an open state and the circuit cannot flow; the closing device is "closed," meaning the switch is in an open state and the circuit is connected. The closing device body 1 includes: a stationary contact 11, a moving contact 12, and a composite sleeve 14; the stationary contact 11, the paired moving contact 12, and the air gap between the two contacts constitute a closing switch 10, and the closing switch 10 is covered by the composite sleeve 14; the stationary contact 11 is fixed inside the composite sleeve 14 and is used to connect to the high-voltage incoming line 3; the moving contact 12 is installed vertically within the composite sleeve 14 and is used to connect to the low-voltage outgoing line 4. Specifically, the control module 2 is located outside the composite jacket 14 and connected to the body 1; the control module 2 includes a transmission module 22, a trigger module 23 and a controller 21, the controller 21 is connected to the moving contact 12 of the body 1 through the transmission module 22 and the trigger module 23 respectively; the controller 21 controls the trigger module 22 and the transmission module 23 to realize the closing of the closing device.

[0033] See Figure 3 As shown, when the stationary contact 11 is in contact with the moving contact 12, the closing switch 10 is turned on; when the stationary contact 11 and the moving contact 12 are separated, the closing switch 10 is turned off. In this embodiment, the closing device consists of the body 1 and the control module 2. After receiving a command, the control module 2 controls the body 1 to switch on and off. The control module 21 sends commands to the transmission module 22 and the trigger module 23. The transmission module 21 drives the moving contact 12 to move, and the trigger module 23 releases charged ions that are transmitted through the moving contact 12 to the stationary contact 11 to achieve circuit connection.

[0034] Specifically, see Figure 1 As shown, the stationary contact 11 has a convex center and flat sides; the moving contact 12 has a concave center and flat sides; the convex shape of the stationary contact 111 matches the concave shape of the moving contact 121. Specifically, the moving contact 12 has an embedded trigger 123 for transporting the charged ions generated by the trigger module 23; the trigger 123 is connected to the control module 2, and the ejection port 124 of the trigger 123 is located at the center of the concave shape of the moving contact 121. In this embodiment, the trigger is a metal channel to ensure that the circuit can conduct. Preferably, both the convex shape of the stationary contact 111 and the concave shape of the moving contact 121 are made of CuW. 80Both the stationary contact plate 112 and the moving contact plate 122 are made of CuCr. 30 Made of materials.

[0035] See Figure 2 , 3 As shown, specifically, one end of the transmission module 22 is connected to the controller 21, and the other end is connected to the moving contact 12; the transmission module 22 is used to drive the moving contact 12 to move up and down; the transmission module 22 drives the moving contact 12 to rise and contact the stationary contact 11; the transmission module 22 drives the moving contact 12 to fall and disconnect from the stationary contact 11; a flexible hose 16 is sleeved at the connection between the moving contact 12 and the transmission module 22, and the flexible hose 16 is placed inside the composite outer sleeve. In this embodiment, the flexible hose 16 is a corrugated pipe, which protects and shields the connection between the moving contact 12 and the transmission module 22 during the rising and falling of the moving contact 12. Specifically, the transmission module adopts a spring mechanism, a permanent magnet mechanism, or a disconnectable rapid electromagnetic repulsion mechanism.

[0036] See Figure 2 , 3 As shown, specifically, one end of the trigger module 23 is connected to the controller 21, and the other end is connected to the trigger 15 of the moving contact 12. After receiving a command from the controller 21, the trigger module 23 discharges, and the discharge is conducted to the stationary contact 11 through the trigger 15, thus achieving circuit connection between the moving contact 12 and the stationary contact 11. Specifically, the trigger module 23 is a capacitor discharge circuit. In this embodiment, after receiving a command from the controller 21, the capacitor discharge in the trigger module 23 generates a high-voltage trigger pulse to the trigger 15 inside the moving contact 12. The trigger 15 generates plasma, which is ejected from the injection port 151 to the stationary contact 11, thus achieving discharge connection of the closing device.

[0037] The closing operation of this device is as follows: The controller sends commands to the transmission module and the trigger module. The capacitor in the trigger module discharges, causing the trigger inside the moving contact to spray plasma, inducing an electric arc to be generated at the center of the moving contact and the stationary contact, thus achieving circuit conduction. The closing device can close within 1ms. Simultaneously, the transmission module drives the moving contact to close with the stationary contact. After the moving contact and the plate portion of the stationary contact make contact, the central electric arc transfers to the outer layer, forming a metal connection, enabling long-term current flow.

[0038] See Figure 3As shown, in this embodiment, the device is used as an uninterrupted switching device for backup power. For sensitive load equipment, a backup power supply is added while the main power supply is providing power. A fast circuit breaker is installed on the main power line, and a millisecond-level closing device is installed on the backup power supply. When a main power failure is detected, the fast circuit breaker can quickly disconnect within 10ms, and then the closing device will put the backup power supply into operation within 1ms. Considering the fault detection time, the uninterrupted switching time of the power supply can be shortened to less than 20ms.

[0039] The beneficial effects of this invention are as follows: This application retains the advantages of high-speed closing of the trigger gap, increases the long-term current carrying capacity, and has the conditions for independent use; the device simplifies control, reduces operating costs, and reduces size, making it more conducive to fast bypass control and protection applications in new power systems.

[0040] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be noted that if terms such as "upper," "lower," "left," and "right" 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 application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose. The step numbers used in this specification are only for distinguishing steps and are not intended to limit the temporal or logical relationship between steps, and the relationship between steps includes a variety of possible scenarios unless expressly defined herein.

[0042] It should be noted that the above embodiments are illustrative of this disclosure and not restrictive, and that alternative embodiments can be devised by those skilled in the art without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This disclosure can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems can be embodied by the same item of hardware.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A trigger-type high-speed closing device, characterized in that, include: The control module is connected to the closing device body and controls the closing of the body; The closing device body includes: a stationary contact, a moving contact, and a composite outer sleeve; The stationary contact, the paired moving contact, and the air gap between the two contacts constitute a closing switch, and the closing switch is covered by the composite jacket. The stationary contact is fixed inside the composite jacket and is used to connect to the high voltage. The moving contact is mounted vertically within the composite jacket and is used to connect to the low-voltage outgoing line; When the stationary contact is in contact with the moving contact, the control module discharges, the closing switch closes, and the circuit is turned on; when the stationary contact is separated from the moving contact, the closing switch opens.

2. The trigger-type high-speed closing device according to claim 1, characterized in that, The stationary contact has a convex center and flat sides; the moving contact has a concave center and flat sides; the convex shape of the stationary contact matches the concave shape of the moving contact.

3. The trigger-type high-speed closing device according to claim 2, characterized in that, The moving contact has an embedded trigger, and the injection port of the trigger is located at the concave center of the moving contact.

4. The trigger-type high-speed closing device according to claim 1, characterized in that, The convex portion of the stationary contact and the concave portion of the moving contact are both made of CuW80 material, and the flat portion of both the stationary contact and the moving contact is made of CuCr30 material.

5. The trigger-type high-speed closing device according to claim 1, characterized in that, The control module is located outside the composite jacket and connected to the main body; The control module includes a transmission module, a trigger module, and a controller. The controller is connected to the moving contact of the main body through the transmission module and the trigger module, respectively. The controller controls the trigger module and the transmission module to realize the closing of the closing device.

6. The trigger-type high-speed closing device according to claim 5, characterized in that, One end of the transmission module is connected to the controller, and the other end is connected to the moving contact; the transmission module is used to drive the moving contact to move up and down. The transmission module drives the moving contact to rise and connect with the stationary contact; the transmission module also drives the moving contact to fall and disconnect from the stationary contact. A flexible tube is fitted at the connection point between the moving contact and the transmission module, and the flexible tube is placed inside the composite jacket.

7. The trigger-type high-speed closing device according to claim 6, characterized in that, The hose is a corrugated pipe.

8. The trigger-type high-speed closing device according to claim 6, characterized in that, The transmission module employs a spring mechanism, a permanent magnet mechanism, or a disconnectable rapid electromagnetic repulsion mechanism.

9. The trigger-type high-speed closing device according to claim 5, characterized in that, One end of the trigger module is connected to the controller, and the other end is connected to the trigger of the moving contact; After receiving a command from the controller, the trigger module discharges, thereby enabling the circuit between the moving contact and the stationary contact to be connected.

10. The trigger-type high-speed closing device according to claim 9, characterized in that, The trigger module is a capacitor discharge circuit. After receiving the controller command, the trigger module discharges to generate a high-voltage trigger pulse to the trigger inside the moving contact. The trigger generates plasma, which is then ejected from the injection port to the stationary contact, thereby realizing the discharge and conduction of the closing device.

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