Comprehensive tester for vacuum circuit breaker

Abstract

The utility model belongs to the high-voltage circuit breaker test field, and relates to a vacuum circuit breaker comprehensive tester comprising an aviation plug, the aviation plug is provided with a switching-on mechanism, a switching-off mechanism and an energy storage mechanism, and the switching-on mechanism, the switching-off mechanism and the energy storage mechanism are connected to a characteristic tester through connecting cables. The characteristic tester is provided with an energy storage port, an internal trigger port, a positive loop resistance test terminal and a negative loop resistance test terminal. According to the utility model, the fixing is firm, the connection is convenient, the loop resistance can be directly tested after the mechanical characteristic test is completed, the working efficiency is improved, the labor intensity of experimenters is reduced, manual opening is not needed after the loop resistance experiment is completed, and the safety of the experiment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of high-voltage circuit breaker testing, specifically relating to a comprehensive tester for vacuum circuit breakers. Background Technology

[0002] As a critical control device in power systems, the accurate testing of the mechanical characteristics and loop resistance of vacuum circuit breakers directly affects the reliability of power grid operation. Traditional testing methods require the use of two separate sets of equipment: a mechanical characteristic tester and a loop resistance tester. First, the mechanical characteristic tester is used to complete the closing operation and collect mechanical parameters. Then, the mechanical test wiring is disconnected, and the loop resistance tester is reinstalled to measure the loop resistance. After the test, the equipment must be manually opened and reset, which is a cumbersome process and poses safety hazards.

[0003] First, the separate equipment leads to low efficiency. Alternating use of two sets of equipment requires repeated disassembly and reassembly of test leads, increasing the time required for each test. Second, the incompatible interface standards of multiple sets of equipment necessitate operators frequently plugging and unplugging different plug types within the confined space of the circuit breaker, easily causing poor contact or interface wear. After the loop resistance test, manual tripping at close range is required, but the distance between the operating position and the energy storage spring mechanism is insufficient to meet the safety threshold. The separate equipment cannot achieve time-series linkage control between mechanical characteristics and loop resistance testing, and the test data is stored in a scattered manner, making it difficult to construct a complete circuit breaker condition analysis model.

[0004] Existing technologies cannot solve the problems of multi-device collaboration, wiring standardization, and operation automation. Therefore, there is an urgent need for a comprehensive vacuum circuit breaker tester that unifies the interface, innovates the connection structure and functional reuse design, realizes integrated operation of mechanical characteristic and circuit resistance testing, introduces a quick connection mechanism to reduce the intensity of manual intervention, and optimizes the safety of tripping operation, thereby systematically improving testing efficiency and reliability. Utility Model Content

[0005] The purpose of this utility model is to provide a comprehensive vacuum circuit breaker tester with a unified interface, innovative connection structure and function reuse design, realizing integrated operation function of mechanical characteristics and circuit resistance testing, and solving the problems of multi-device collaboration, wiring standardization and operation automation in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a comprehensive tester for vacuum circuit breakers, including an aviation plug. The aviation plug is equipped with a closing mechanism, a opening mechanism, and an energy storage mechanism. The closing mechanism, the opening mechanism, and the energy storage mechanism are connected to a characteristic tester via connecting cables. The characteristic tester is equipped with an energy storage port, an internal trigger port, and positive circuit resistance test terminals and negative circuit resistance test terminals.

[0007] Preferably, the closing mechanism, the opening mechanism, and the energy storage mechanism are each provided with two connection ports, and the energy storage port, the internal trigger port, the positive circuit resistance test terminal, and the negative circuit resistance test terminal are each provided with one connection port.

[0008] Preferably, the connection port is cylindrical, with a connection thread on the inner wall and a connection socket inside.

[0009] Preferably, the connecting cable includes a cylindrical interface, a connecting plug at the bottom of the cylindrical interface, a rotating sleeve on the outside of the cylindrical interface, a raised thread on the outer wall of the rotating sleeve, a handle at the rear end of the rotating sleeve, and a connecting wire at the rear end of the cylindrical interface.

[0010] Preferably, one end of the connecting line is provided with a rectangular interface, the connecting line is connected to one side of the rectangular interface, the top of the rectangular interface is provided with a connection socket, and the bottom of the rectangular interface is provided with a connection plug.

[0011] Preferably, there are two cylindrical interfaces, one at each end of the connecting line.

[0012] Preferably, the rotating sleeve is rotatably fitted onto the outer wall of the cylindrical interface via an annular bearing assembly.

[0013] Preferably, the upper connection port of the closing mechanism and the upper connection port of the opening mechanism are both connected to the internal trigger port, the lower connection port of the closing mechanism is connected to the lower connection port of the opening mechanism, and the two connection ports of the energy storage mechanism are both connected to the energy storage port.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model is firmly fixed and easy to connect, and can directly test the circuit resistance after completing the mechanical characteristic test, which improves work efficiency, reduces the labor intensity of experimental personnel, and does not require manual switching after the circuit resistance test is completed, thus improving the safety of the experiment.

[0016] 2. This utility model features a unified interface, innovative connection structure, and functional reuse design, realizing integrated operation of mechanical characteristics and loop resistance testing, and solving the problems of multi-device collaboration, wiring standardization, and operation automation in existing technologies. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a vacuum circuit breaker integrated tester according to one embodiment;

[0019] Figure 2 This is a partial structural schematic diagram of a vacuum circuit breaker integrated tester according to one embodiment;

[0020] Figure 3 This is a partial structural assembly diagram of a vacuum circuit breaker integrated tester according to one embodiment;

[0021] In the above diagrams, 1. Aviation plug, 2. Closing mechanism, 3. Opening mechanism, 4. Energy storage mechanism, 5. Connecting cable, 6. Characteristic tester, 7. Connecting port, 8. Cylindrical interface, 9. Connecting plug, 10. Rotary sleeve, 11. Handle, 12. Connecting wire, 13. Rectangular interface, 14. Connecting socket. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1, such as Figure 1-3 As shown, a comprehensive tester for vacuum circuit breakers includes an aviation connector 1. The aviation connector 1 serves as the core connection hub, integrating electrical interfaces for three major functional mechanisms: closing, opening, and energy storage, enabling rapid docking with the operating mechanism of the vacuum circuit breaker. The aviation connector 1 is equipped with a closing mechanism 2, an opening mechanism 3, and an energy storage mechanism 4. The energy storage mechanism 4 connects to the circuit breaker's energy storage spring mechanism, monitoring the spring's energy state in real time through the energy storage port and automatically storing energy before testing.

[0025] The closing mechanism 2, the opening mechanism 3, and the energy storage mechanism 4 are connected to the characteristic tester 6 via the connecting cable 5. The closing mechanism 2 receives commands from the characteristic tester 6 through its internal trigger port, driving the circuit breaker to perform a closing action. After the test is completed, the opening mechanism 3 is automatically triggered to open by the characteristic tester 6 without manual intervention. The timing control of the closing and opening actions by the characteristic tester 6 eliminates the safety risks of manual opening. The connecting cable 5 enables rapid connection between the devices and transmits control signals and test data.

[0026] The characteristic tester 6 is equipped with an energy storage port, an internal trigger port, and positive and negative loop resistance test terminals. The characteristic tester 6 integrates a mechanical characteristic test module and a loop resistance test module. It controls the circuit breaker's operation through the internal trigger port and collects and analyzes test data. Both modules share the same hardware platform to complete mechanical parameter and loop resistance measurements. After the mechanical characteristic test, it automatically switches to the loop resistance test mode, eliminating the need for manual equipment switching.

[0027] The specific design of the aforementioned key components will be discussed in detail below:

[0028] Each of the closing mechanism 2, opening mechanism 3, and energy storage mechanism 4 is equipped with two connection ports 7. These connection ports 7 are standardized interface units, enabling physical connection and electrical conduction between the devices. Each of the energy storage port, internal trigger port, and positive and negative circuit resistance test terminals is equipped with one connection port 7. The closing mechanism 2, opening mechanism 3, and energy storage mechanism 4 are each configured with two connection ports 7, forming a symmetrical layout. The energy storage port, internal trigger port, and positive and negative circuit resistance test terminals are configured with a single port and are centrally located on the panel of the characteristic tester 6.

[0029] The connection port 7 is cylindrical, and the inner wall of the connection port 7 is provided with a connection thread. The outer shell of the connection port 7 is an M18 standard cylindrical metal shell with a 1.5mm deep trapezoidal thread machined on the inner wall. The connection port 7 is provided with a connection socket 14 inside.

[0030] The connecting cable 5 includes a cylindrical interface 8, a connecting plug 9 at the bottom of the cylindrical interface 8, and a rotating sleeve 10 on the outer side of the cylindrical interface 8. The outer wall of the rotating sleeve 10 has raised threads, and the outer wall of the rotating sleeve 10 is machined with 2mm high sawtooth-shaped raised threads. The inner diameter of the rotating sleeve 10 is clearance-fitted with the outer diameter of the cylindrical interface 8. A handle 11 is provided at the rear end of the rotating sleeve 10, and a connecting wire 12 is provided at the rear end of the cylindrical interface 8. The thread is locked by gripping and rotating the handle 11. When the rotating sleeve 10 rotates, the connecting wire 12 remains stationary to avoid damage to the cable due to torque transmission.

[0031] One end of the connecting line 12 is provided with a rectangular interface 13. The connecting line 12 is connected to one side of the rectangular interface 13. The flat rectangular shape facilitates spatial wiring. The top of the rectangular interface 13 is provided with a connection socket 14, and the bottom of the rectangular interface 13 is provided with a connection plug 9. A multi-level cascade structure is formed through the top socket and the bottom plug. After multiple rectangular interfaces 13 are combined and connected, they are inserted into the cylindrical interface 8 and then inserted into the connection port 7, which is suitable for connection ports 7 that require multi-line connection.

[0032] The cylindrical interface 8 is provided at both ends of the connecting line 12, and is connected to two connecting ports 7 respectively through the cylindrical interface 8, which is suitable for connecting ports 7 that require single-line connection.

[0033] The rotating sleeve 10 is rotatably mounted on the outer wall of the cylindrical interface 8 via an annular bearing assembly. It adopts a model 608ZZ miniature deep groove ball bearing, with the inner ring interference-fitted to the outer wall of the cylindrical interface 8, and the gap between the outer ring and the inner wall of the rotating sleeve 10 is 0.1mm.

[0034] The upper connection port 7 of the closing mechanism 2 and the upper connection port 7 of the opening mechanism 3 are both connected to the internal trigger port, the lower connection port 7 of the closing mechanism 2 is connected to the lower connection port 7 of the opening mechanism 3, and the two connection ports 7 of the energy storage mechanism 4 are both connected to the energy storage port.

[0035] Connection logic:

[0036] Upper port of closing mechanism 2 → Internal trigger port: Transmits closing pulse signal;

[0037] The upper port of the tripping mechanism 3 → the internal trigger port: provides feedback on the on / off position signal of the tripping dry contact;

[0038] The lower port of closing mechanism 2 → the lower port of opening mechanism 3: form a constant current source current loop for mechanical characteristic testing;

[0039] Energy storage mechanism 4 dual-port → energy storage port: forms the energy storage motor control loop.

[0040] During mechanical characteristic testing, the closing circuit is activated; when switching to loop resistance testing, the positive and negative loop resistance test terminals need to be connected to an external three-phase power supply to provide current input.

[0041] If the energy storage port does not detect a signal indicating that the spring energy release is complete, the tripping operation is prohibited.

[0042] The principles and related component structures for mechanical characteristic testing and loop resistance testing of vacuum circuit breakers are existing technologies. Please refer to the relevant descriptions in patent numbers 201510821696.9 and 201721922652.6. This description will not further introduce or explain the specific components for mechanical characteristic testing and loop resistance testing.

[0043] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A vacuum circuit breaker comprehensive tester characterized by, The device includes an aviation connector, which is equipped with a closing mechanism, a closing mechanism, and an energy storage mechanism. The closing mechanism, the closing mechanism, and the energy storage mechanism are connected to a characteristic tester via a connecting cable. The characteristic tester is equipped with an energy storage port, an internal trigger port, and positive circuit resistance test terminals and negative circuit resistance test terminals.

2. The vacuum circuit breaker comprehensive tester according to claim 1, characterized in that, The closing mechanism, opening mechanism, and energy storage mechanism are each provided with two connection ports, and the energy storage port, internal trigger port, positive circuit resistance test terminal, and negative circuit resistance test terminal are each provided with one connection port.

3. The vacuum circuit breaker comprehensive tester according to claim 2, characterized in that, The connection port is cylindrical, with a connection thread on the inner wall and a connection socket inside.

4. The vacuum circuit breaker comprehensive tester according to claim 1, characterized in that, The connecting cable includes a cylindrical interface, a connecting plug at the bottom of the cylindrical interface, a rotating sleeve on the outside of the cylindrical interface, a raised thread on the outer wall of the rotating sleeve, a handle at the rear end of the rotating sleeve, and a connecting wire at the rear end of the cylindrical interface.

5. A comprehensive tester for vacuum circuit breakers according to claim 4, characterized in that, One end of the connecting line is provided with a rectangular interface, the connecting line is connected to one side of the rectangular interface, the top of the rectangular interface is provided with a connection socket, and the bottom of the rectangular interface is provided with a connection plug.

6. A comprehensive tester for vacuum circuit breakers according to claim 4, characterized in that, The number of cylindrical interfaces is two, one at each end of the connecting line.

7. A comprehensive tester for vacuum circuit breakers according to claim 4 or 6, characterized in that, The rotating sleeve is rotatably fitted onto the outer wall of the cylindrical interface via an annular bearing assembly.

8. A comprehensive tester for vacuum circuit breakers according to claim 2, characterized in that, The upper connection port of the closing mechanism and the upper connection port of the opening mechanism are both connected to the internal trigger port, the lower connection port of the closing mechanism is connected to the lower connection port of the opening mechanism, and the two connection ports of the energy storage mechanism are both connected to the energy storage port.

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