10kV intelligent fast switch

Abstract

The utility model discloses a 10kV intelligent fast switch, which comprises an operation box, a contact mechanism, a lifting mechanism and an electromagnetic control mechanism, the top of the operation box is provided with a plurality of solid-sealed polar poles, the tops of the solid-sealed polar poles are provided with vacuum arc-extinguishing chambers, the contact mechanism is arranged at the tops of the solid-sealed polar poles, and the contact mechanism is electrically conducted in the vacuum arc-extinguishing chambers; the lifting mechanism is arranged at the bottom of the contact mechanism, and the lifting mechanism is arranged at the bottom of the solid-sealed polar pole; the electromagnetic control mechanism comprises a control part and an electromagnetic part, the bottom of the lifting mechanism is sleeved with the electromagnetic part, and the control part is electrically connected to the power connection end of the electromagnetic part. According to the utility model, the lifting mechanism is rapidly driven to move in the vertical direction through the magnetic change of the electromagnetic component, and meanwhile, the electromagnetic component is provided with transmission control of exciting current and degaussing current by the control part, so that the electromagnetic component can respond to a control signal more rapidly, and the flexibility and efficiency of switching operation are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of medium-voltage distribution network switches, and in particular to a 10kV intelligent fast switch. Background Technology

[0002] With the rapid development of industry and the increasing demand for a high-quality life, safe and reliable intelligent power systems have become an indispensable component. Against this backdrop, the requirements for high-voltage switches in power distribution networks have also increased. To meet the market demand for reliability in power distribution networks, vacuum circuit breakers, as high-voltage switches, are widely used in power system distribution circuits.

[0003] Traditional high-voltage switches typically employ spring mechanisms for circuit opening and closing operations, relying on manual operation via levers. Specifically, the operating mechanism of a traditional switch consists of multiple components, including a motor, gearbox, ratchet mechanism, energy storage spring, opening spring, various cranks, and structures for changing the direction of output force. Each time an opening or closing action needs to be output to the moving contact, it must undergo multiple mechanical conversions. This complex process not only leads to significant power loss but also results in slow opening and closing speeds, failing to meet the requirements of modern power systems for rapid response and high efficiency. Therefore, this proposal suggests a 10kV intelligent fast switch to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a 10kV intelligent fast switch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a 10kV intelligent fast switch, comprising an operating box, wherein the top of the operating box is provided with multiple solid-sealed poles, and the top of each solid-sealed pole is provided with a vacuum interrupter, and further comprising:

[0006] The contact mechanism is disposed on the top of the solid-sealed pole, and the contact mechanism is electrically connected in the vacuum interrupter chamber.

[0007] A lifting mechanism is provided at the bottom of the contact mechanism and at the bottom of the solid sealing pole. The lifting mechanism is used to lift the contact mechanism.

[0008] An electromagnetic control mechanism includes a control unit and an electromagnetic unit. The electromagnetic unit is sleeved on the bottom of the lifting mechanism, and the control unit is electrically connected to the power terminal of the electromagnetic unit. The control unit is used to control the transmission of excitation current and demagnetization current to the electromagnetic unit.

[0009] Preferably, a current transformer is provided on one side of the top of the solid-sealed pole, a lower output terminal is provided in the middle of the current transformer, the lower output terminal is electrically connected to the control unit, an upper output terminal is provided on the top of the solid-sealed pole, the upper output terminal is sleeved on the top of the contact mechanism, and one end of the upper output terminal is electrically connected to the control unit.

[0010] Preferably, the control unit includes:

[0011] An intelligent controller, which is used for controlling the transmission of excitation current and demagnetization current;

[0012] The aircraft connector is located on one side of the control box. The positive terminal of the aircraft connector is electrically connected to the output terminal of the intelligent controller, and the negative terminal of the aircraft connector is electrically connected to the electromagnetic unit.

[0013] Preferably, the control unit further includes:

[0014] ADMU digital module, wherein the output terminal of the ADMU digital module is electrically connected to the receiving terminal of the intelligent controller;

[0015] A current sampling module, wherein the receiving end of the current sampling module is electrically connected to the lower output terminal, and the output end of the current sampling module is electrically connected to the current signal input end of the ADMU digital module;

[0016] A voltage sampling module, wherein the receiving end of the voltage sampling module is electrically connected to the upper output terminal, and the output end of the voltage sampling module is electrically connected to the voltage signal input end of the ADMU digital module;

[0017] A switch remote signal acquisition module is used to detect the open and open circuit states of a switch. The output terminal of the voltage sampling module is electrically connected to the switch signal input terminal of the ADMU digital module.

[0018] Preferably, the contact mechanism includes:

[0019] A stationary contact is inserted and connected to the top of a solid-sealed pole. The top of the stationary contact is electrically connected to the middle of the upper outgoing terminal. The bottom of the stationary contact is inserted and connected to the vacuum interrupter chamber.

[0020] The moving contact has its top inserted into the vacuum interrupter chamber, and its bottom is used to connect to the lifting mechanism.

[0021] Preferably, the lifting mechanism includes a lifting rod, which is inserted through the middle of the electromagnetic component, and an insulating pull rod is provided at the top of the lifting rod, the top of which is sleeved with the bottom of the moving contact.

[0022] Preferably, the electromagnetic component includes:

[0023] A sealed box, which is located inside the control box, and a sealing cover is provided on the top of the sealed box;

[0024] A moving iron core is disposed at the bottom of the enclosed box, and the middle part of the moving iron core is inserted and connected to the bottom of the lifting rod;

[0025] A stationary iron core is disposed at the top of the enclosed box, and the stationary iron core and the moving iron core are symmetrically arranged in the vertical direction. The stationary iron core is sleeved on the middle part of the lifting rod.

[0026] A coil is fitted between the top end of the moving iron core and the bottom end of the stationary iron core, and the two ends of the coil are electrically connected to the output end of the intelligent controller through an aviation connector.

[0027] Preferably, a partition sleeve is provided between the top of the stationary iron core and the bottom of the sealing cover, and a permanent magnet is provided on the outer wall of the partition sleeve and at the bottom of the sealing cover.

[0028] Preferably, a placement groove is provided at the middle of the top of the moving iron core and the middle of the bottom of the stationary iron core. A stop spring is provided in the placement groove and between the top of the moving iron core and the bottom of the stationary iron core. The stop spring is sleeved on the outer wall of the lifting rod.

[0029] Preferably, a baffle plate is provided at the bottom of the lifting rod, the baffle plate is inserted into the placement groove at the moving iron core, and the baffle plate is located below the opening spring.

[0030] The technical effects and advantages of this utility model are as follows:

[0031] This invention employs an electromagnetic control mechanism to achieve the opening and closing operation of the contacts. Through the magnetic changes of the electromagnetic components, the lifting mechanism is rapidly driven to move in the vertical direction. Simultaneously, the electromagnetic components are controlled by the control unit to supply excitation and demagnetization currents, enabling the electromagnetic components to respond to control signals more quickly. Compared with the traditional purely mechanical opening and closing structure, this solution utilizes magnetic control technology combined with intelligent control, significantly improving the response speed of the switch opening and closing. This not only enhances the flexibility and efficiency of switch operation but also helps to ensure the safety and effectiveness of the switch. Attached Figure Description

[0032] Figure 1 This is a front view of the overall structure of this utility model.

[0033] Figure 2 This is a side sectional view of the overall structure of this utility model.

[0034] Figure 3 This utility model Figure 2A magnified schematic diagram of the structure at point A in the middle.

[0035] Figure 4 This is a circuit control diagram of the electromagnetic control mechanism of this utility model.

[0036] In the diagram: 1. Control box; 101. ADMU digital module; 102. Current sampling module; 103. Voltage sampling module; 104. Switch remote signaling acquisition module; 2. Solid-sealed pole; 201. Vacuum interrupter; 3. Aviation connector; 4. Current transformer; 401. Lower outgoing terminal; 5. Stationary contact; 501. Upper outgoing terminal; 6. Enclosed box; 601. Sealing cover; 602. Separator sleeve; 7. Moving iron core; 8. Coil; 9. Stationary iron core; 10. Permanent magnet; 11. Lifting rod; 1101. Barrier plate; 1102. Insulating pull rod; 1103. Moving contact; 12. Opening spring; 13. Intelligent controller. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1: This utility model provides the following... Figure 1-4 The 10kV intelligent fast switch shown includes an operation box 1, with multiple solid-sealed poles 2 on the top of the operation box 1, and a vacuum interrupter 201 on the top of the solid-sealed poles 2.

[0039] It should be noted that the portion of the solid-sealed electrode 2 located in the vacuum interrupter 201 needs to be insulated and have high strength. The operating principle of the vacuum interrupter 201 is that when a circuit fault occurs, the moving electrode quickly separates from the stationary electrode, generating an electric arc. Since the inside of the vacuum interrupter 201 is in a high vacuum state, the energy generated by the electric arc in the vacuum will dissipate rapidly, and the gas molecules between the electrodes will be diluted, thereby causing the arc current to drop rapidly and eventually extinguishing the arc. The vacuum environment has a very high insulation strength, which can effectively prevent the arc from reigniting.

[0040] Specifically, a current transformer 4 is provided on one side of the top of the solid-sealed pole 2. A lower output terminal 401 is provided in the middle of the current transformer 4, and an upper output terminal 501 is provided on the top of the solid-sealed pole 2. The lower output terminal 401 serves as the wiring terminal of the current transformer 4 and is used for the current transformer 4 to detect the current signal output. The upper output terminal 501 is used for the access of high voltage electricity and is also connected to a voltage transformer to detect the switching voltage.

[0041] Also includes:

[0042] The contact mechanism is located on the top of the solid-sealed pole 2 and is electrically connected inside the vacuum interrupter 201. The upper output terminal 501 is sleeved with the top of the contact mechanism.

[0043] Specifically, the contact mechanism includes:

[0044] The stationary contact 5 is inserted and connected to the top of the solid-sealed pole 2. The top of the stationary contact 5 is electrically connected to the middle of the upper outgoing terminal 501. The bottom of the stationary contact 5 is inserted and connected inside the vacuum interrupter 201.

[0045] The moving contact 1103 is inserted into the vacuum interrupter 201 at its top.

[0046] It should be noted that the moving contact 1103 makes contact with or separates from the stationary contact 5 by moving vertically. When the two are in contact, the switch is in the closed state, and when they are separated, the switch is in the open state.

[0047] The lifting mechanism is located at the bottom of the contact mechanism and at the bottom of the solid sealing pole 2. The lifting mechanism is used to lift the contact mechanism, and the bottom of the moving contact 1103 is used to connect the lifting mechanism.

[0048] Specifically, the lifting mechanism includes a lifting rod 11, and an insulating pull rod 1102 is provided at the top of the lifting rod 11. The top of the insulating pull rod 1102 is sleeved with the bottom of the moving contact 1103. By setting the insulating pull rod 1102, when the moving contact 1103 is lifted, the high voltage current will not be transmitted to the operating box 1 when the switch is in the closed state, so as not to affect the structure inside the operating box 1.

[0049] In Embodiment 2, this utility model provides an electromagnetic control mechanism applied to a 10kV intelligent fast switch in Embodiment 1. The electromagnetic control mechanism includes a control unit and an electromagnetic unit. The electromagnetic unit is sleeved on the bottom of the lifting mechanism. The control unit is electrically connected to the power receiving end of the electromagnetic unit. The control unit is used to control the excitation current and demagnetization current to be delivered to the electromagnetic unit. The lower output terminal 401 is electrically connected to the control unit, and one end of the upper output terminal 501 is electrically connected to the control unit.

[0050] Specifically, the control department includes:

[0051] Intelligent controller 13 is used for controlling the transmission of excitation current and demagnetization current;

[0052] The flight connector 3 is located on one side of the control box 1. The positive terminal of the flight connector 3 is electrically connected to the output terminal of the intelligent controller 13, and the negative terminal of the flight connector 3 is electrically connected to the electromagnetic component. The lifting rod 11 is inserted and connected to the middle of the electromagnetic component.

[0053] It should be noted that the intelligent controller 13 mainly consists of a CPU and a GPRS. The GPRS is used to locate the specific connection branch, while the CPU makes control judgments based on the set control parameters and the information collected from the data acquisition, and then generates corresponding control commands. The electromagnetic part of the control command is sent by the wiring through the aviation plug interface 3, thereby applying excitation current or demagnetizing current to the electromagnetic part, and thus realizing the opening and closing control of the switch.

[0054] Furthermore, the control unit also includes:

[0055] ADMU digital module 101, the output terminal of ADMU digital module 101 is electrically connected to the receiving terminal of intelligent controller 13;

[0056] The current sampling module 102 is electrically connected to the lower output terminal 401, and the output terminal of the current sampling module 102 is electrically connected to the current signal input terminal of the ADMU digital module 101.

[0057] The voltage sampling module 103 has its receiving end electrically connected to the upper output terminal 501, and its output end electrically connected to the voltage signal input end of the ADMU digital module 101.

[0058] The switch remote signal acquisition module 104 is used to detect the open and open circuit status of the switch. The output terminal of the voltage sampling module 103 is electrically connected to the switch signal input terminal of the ADMU digital module 101.

[0059] It should be noted that the ADMU digital module 101 uses the current sampling module 102 and the voltage sampling module 103 to collect the current (load current, excitation current) and voltage signals (bus voltage, operating voltage) of the vacuum circuit breaker in real time. The analog signals are converted into low-level electrical signals through sensors (current transformer 4, voltage transformer). At the same time, the switch remote signal acquisition module 104 receives the status information of the circuit breaker body (open / close position, energy storage status) and sends it to the ADMU digital module 101. The ADMU digital module 101 filters, amplifies, and isolates the collected analog signals and then sends them to the CPU at the intelligent controller 13 to assist in signal judgment and control command generation.

[0060] Specifically, the electromagnetic components include:

[0061] A closed box 6 is installed inside the operation box 1, and a sealing cover 601 is provided on the top of the closed box 6;

[0062] The moving iron core 7 is located at the bottom of the enclosed box 6, and the middle part of the moving iron core 7 is inserted and connected to the bottom of the lifting rod 11.

[0063] The stationary iron core 9 is located at the top of the enclosed box 6, and the stationary iron core 9 and the moving iron core 7 are symmetrically arranged in the vertical direction. The stationary iron core 9 is sleeved in the middle of the lifting rod 11.

[0064] Coil 8 is sleeved between the top of the moving iron core 7 and the bottom of the stationary iron core 9. The two ends of coil 8 are electrically connected to the output of intelligent controller 13 through aviation plug interface 3.

[0065] Furthermore, a partition sleeve 602 is provided between the top of the static iron core 9 and the bottom of the sealing cover 601, and a permanent magnet 10 is provided on the outer wall of the partition sleeve 602 and located at the bottom of the sealing cover 601.

[0066] Placement slots are provided at the top center of the moving iron core 7 and the bottom center of the stationary iron core 9. A brake spring 12 is provided in the placement slot between the top of the moving iron core 7 and the bottom of the stationary iron core 9. The brake spring 12 is sleeved on the outer wall of the lifting rod 11.

[0067] Furthermore, a baffle plate 1101 is provided at the bottom of the lifting rod 11. The baffle plate 1101 is inserted into the placement groove at the moving iron core 7 and is located below the opening spring 12.

[0068] It should be noted that, with the setting of the barrier plate 1101, when the lifting rod 11 moves upward with the moving iron core 7, the barrier plate 1101 squeezes the opening spring 12. In this way, when it is necessary to open the circuit, the opening spring 12 pushes the barrier plate 1101, thereby driving the moving contact 1103 to move downward quickly to open the circuit.

[0069] The operation process of the electromagnetic unit includes:

[0070] During the closing operation, the excitation current is supplied to coil 8, and the current supplied to coil 8 is in the same direction as the magnetic field of permanent magnet 10, generating a superimposed magnetic field, which enhances the magnetic force. The enhanced magnetic force attracts the moving iron core 7 to move towards the stationary iron core 9, causing the lifting rod 11 to move upward. At this time, the moving contact 1103 approaches the stationary contact 5 and then closes in the vacuum interrupter 201. At the same time, the opening spring 12 is compressed to store energy. After the contact is closed, the magnetic field of permanent magnet 10 is sufficient to maintain the position of moving iron core 7. After coil 8 is de-energized, it still remains in the closed state. The closed state depends on permanent magnet 10 to maintain it, but it needs to be actively released by demagnetizing current.

[0071] During the tripping operation, a demagnetizing current is supplied to coil 8, and a reverse current is supplied to coil 8, generating a magnetic field opposite to that of permanent magnet 10. This weakens or cancels the holding force of permanent magnet 10. At the same time, the elastic force of tripping spring 12 exceeds the residual magnetic force, pushing moving iron core 7 to move down and return to the tripping position. The contacts quickly separate. After tripping, the mechanical force of tripping spring 12 maintains the tripping state without the need for external energy.

[0072] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 10kV intelligent fast switch, comprising an operating box (1), wherein a plurality of solid-sealed poles (2) are disposed on the top of the operating box (1), and a vacuum interrupter (201) is disposed on the top of the solid-sealed poles (2), characterized in that, Also includes: The contact mechanism is located on the top of the solid-sealed pole (2) and is electrically connected inside the vacuum interrupter (201). A lifting mechanism is provided at the bottom of the contact mechanism and at the bottom of the solid sealing pole (2). The lifting mechanism is used to lift the contact mechanism. An electromagnetic control mechanism includes a control unit and an electromagnetic unit. The electromagnetic unit is sleeved on the bottom of the lifting mechanism, and the control unit is electrically connected to the power terminal of the electromagnetic unit. The control unit is used to control the transmission of excitation current and demagnetization current to the electromagnetic unit.

2. A 10kV intelligent fast switch according to claim 1, characterized in that, A current transformer (4) is provided on one side of the top of the solid-sealed pole (2). A lower output terminal (401) is provided in the middle of the current transformer (4). The lower output terminal (401) is electrically connected to the control unit. An upper output terminal (501) is provided on the top of the solid-sealed pole (2). The upper output terminal (501) is sleeved on the top of the contact mechanism. One end of the upper output terminal (501) is electrically connected to the control unit.

3. A 10kV intelligent fast switch according to claim 2, characterized in that, The control unit includes: Intelligent controller (13), the intelligent controller (13) is used for sending and controlling the excitation current and demagnetizing current; The aircraft connector (3) is located on one side of the control box (1). The positive terminal of the aircraft connector (3) is electrically connected to the output terminal of the intelligent controller (13), and the negative terminal of the aircraft connector (3) is electrically connected to the electromagnetic part.

4. A 10kV intelligent fast switch according to claim 3, characterized in that, The control unit also includes: ADMU digital module (101), the output terminal of which is electrically connected to the receiving terminal of intelligent controller (13); A current sampling module (102) is provided, wherein the receiving end of the current sampling module (102) is electrically connected to the lower output terminal (401), and the output end of the current sampling module (102) is electrically connected to the current signal input end of the ADMU digital module (101). A voltage sampling module (103) is provided, wherein the receiving end of the voltage sampling module (103) is electrically connected to the upper output terminal (501), and the output end of the voltage sampling module (103) is electrically connected to the voltage signal input end of the ADMU digital module (101). The switch remote signal acquisition module (104) is used to detect the open and closed circuit states of the switch. The output terminal of the voltage sampling module (103) is electrically connected to the switch signal input terminal of the ADMU digital module (101).

5. A 10kV intelligent fast switch according to claim 3, characterized in that, The contact mechanism includes: A stationary contact (5) is inserted and connected to the top of the solid-sealed pole (2). The top of the stationary contact (5) is electrically connected to the middle of the upper outgoing terminal (501). The bottom of the stationary contact (5) is inserted and connected to the vacuum interrupter (201). The moving contact (1103) is inserted into the vacuum interrupter (201) at its top and connected to the bottom of the moving contact (1103) at its bottom for connecting to the lifting mechanism.

6. A 10kV intelligent fast switch according to claim 5, characterized in that, The lifting mechanism includes a lifting rod (11), which is inserted into the middle of the electromagnetic component. An insulating pull rod (1102) is provided at the top of the lifting rod (11), and the top of the insulating pull rod (1102) is sleeved with the bottom of the moving contact (1103).

7. A 10kV intelligent fast switch according to claim 6, characterized in that, The electromagnetic component includes: A closed box (6) is provided inside the operation box (1), and a sealing cover (601) is provided on the top of the closed box (6); The moving iron core (7) is located at the bottom of the enclosed box (6), and the middle part of the moving iron core (7) is inserted and connected to the bottom of the lifting rod (11); A stationary iron core (9) is provided on the top of the enclosed box (6), and the stationary iron core (9) and the moving iron core (7) are symmetrically arranged in the vertical direction. The stationary iron core (9) is sleeved on the middle part of the lifting rod (11). The coil (8) is sleeved between the top end of the moving iron core (7) and the bottom end of the stationary iron core (9). The two ends of the coil (8) are electrically connected to the output end of the intelligent controller (13) through the aviation plug interface (3).

8. A 10kV intelligent fast switch according to claim 7, characterized in that, A partition sleeve (602) is provided between the top of the stationary iron core (9) and the bottom of the sealing cover (601), and a permanent magnet (10) is provided on the outer wall of the partition sleeve (602) and at the bottom of the sealing cover (601).

9. A 10kV intelligent fast switch according to claim 7, characterized in that, Placement slots are provided at the top center of the moving iron core (7) and the bottom center of the stationary iron core (9). A stop spring (12) is provided in the placement slot between the top of the moving iron core (7) and the bottom of the stationary iron core (9). The stop spring (12) is sleeved on the outer wall of the lifting rod (11).

10. A 10kV intelligent fast switch according to claim 9, characterized in that, The bottom of the lifting rod (11) is provided with a baffle plate (1101), which is inserted into the placement groove of the moving iron core (7) and is located below the opening spring (12).

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