A high voltage test switching device suitable for multiple types of circuit breakers

Abstract

The application discloses a high-voltage test switching device suitable for multiple types of circuit breakers, which comprises a shell, an operating part, a switching part, a flow guiding part, the upper end of the shell is provided with a slide rail channel for accommodating the operating part, the operating part comprises a switching button and a telescopic contact, the switching button is connected with the telescopic contact, the telescopic contact is located above the switching part, the operating part moves along the slide rail channel, the switching part comprises a conversion circuit board, a contact sheet and a wiring terminal, the flow guiding part comprises a jack, a wiring column, a jack circuit wire and a switching circuit wire, the jacks are located at the lower end of the shell and correspond to the contact sheets one by one. The device avoids the problems that the firmness is poor and the safety is low due to the small spacing between the circuit breaker aviation plug pins, and the skill level of the operating personnel is required to be high due to the non-simple pin arrangement, thereby expanding the universality of the circuit breaker, and making the operation more simple, fast and efficient.

Description

Technical Field

[0001] This invention relates to the field of circuit switching technology, and in particular to a high-voltage test switching device suitable for multiple types of circuit breakers. Background Technology

[0002] 10kV circuit breakers are common equipment in power systems. In order to determine the operating status of 10kV circuit breakers, high-voltage tests that require connection to the secondary circuit of the 10kV circuit breaker are needed, such as testing the mechanical characteristics of the circuit breaker and testing the circuit resistance.

[0003] The existing technical solution for wiring 10kV circuit breaker secondary circuit tests involves directly fixing the test leads to the pins of the circuit breaker's secondary circuit aviation connector using alligator clips. This method has the following drawbacks: First, poor stability. Due to the narrow space of the 10kV circuit breaker aviation connector and the small spacing between the pins, the alligator clips cannot fully engage the pins, resulting in poor stability. The test circuit is easily loosened by external forces, affecting the test results. Second, low safety. Because of the small pin spacing of the circuit breaker aviation connector, the large alligator clips are prone to contacting other pins during testing, posing a risk of short circuit in the secondary circuit. Third, low efficiency. Although different models of 10kV circuit breaker secondary aviation connectors have similar structures, their circuit arrangements differ. Therefore, during the test wiring process, operators need to consult the equipment manual to determine the required pin positions. This process requires a high level of skill from the operators, resulting in low efficiency in wiring the 10kV circuit breaker high-voltage test secondary circuit. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a circuit breaker high-voltage test switching device that increases the spacing between each pin, expands its versatility, and makes the operation simpler, faster and more efficient.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-voltage test switching device suitable for multiple types of circuit breakers includes a housing, an operating section, a switching section, and a current-conducting section;

[0007] The upper end of the housing has a slide rail channel for accommodating the operating part;

[0008] The operating unit includes a switching button and a telescopic contact; the switching button is connected to the telescopic contact; the telescopic contact is located above the switching unit; the operating unit moves along the slide rail channel;

[0009] The switching unit includes a conversion circuit board, contact plates, and wiring terminals; the contact plates and wiring terminals are soldered onto the conversion circuit board.

[0010] The flow guide includes a socket, a terminal block, a socket circuit wire, and a switching circuit wire. The socket is located at the lower end of the housing and corresponds one-to-one with the contact piece. The end of the socket near the conversion circuit board is connected to the terminal block through the socket circuit wire. The terminal block is connected to the telescopic contact through the switching circuit wire.

[0011] The beneficial effects of this invention are as follows: Designed for the secondary aviation plug structure of various 10kV circuit breakers, it improves the robustness, safety, and efficiency of the test wiring for the secondary circuit of 10kV circuit breaker high-voltage testing. Firstly, the pin arrangement provides ample space, ensuring sufficient working space and avoiding problems such as poor robustness and low safety caused by insufficient spacing, thus guaranteeing reliable connection of the test clamps. Secondly, it is versatile and can be used with various 10kV circuit breaker secondary aviation plugs. Thirdly, it is highly efficient, simple, and quick to operate, enabling rapid switching of the secondary circuit for high-voltage testing of different 10kV circuit breaker models. It is widely applicable to the test wiring needs of secondary circuits for high-voltage testing of various 10kV circuit breaker models, achieving efficient, safe, and reliable electrical connections. Attached Figure Description

[0012] Figure 1 This is a top view of a high-voltage test switching device applicable to multiple circuit breakers according to an embodiment of the present invention;

[0013] Figure 2 This is a bottom view of a high-voltage test switching device applicable to multiple circuit breakers according to an embodiment of the present invention;

[0014] Figure 3 This is a front view of a high-voltage test switching device applicable to multiple circuit breakers according to an embodiment of the present invention;

[0015] Figure 4 This is a front cross-sectional view of a high-voltage test switching device applicable to multiple circuit breakers according to an embodiment of the present invention;

[0016] Figure 5 This is a side cross-sectional view of a high-voltage test switching device applicable to multiple types of circuit breakers according to an embodiment of the present invention.

[0017] Label Explanation:

[0018] 1. Socket; 2. Switch button; 3. Terminal block; 4. Telescopic contact; 5. Contact piece; 6. Switching circuit board; 7. Switching circuit wire; 8. Grounding contact telescopic head; 9. Socket circuit wire; 10. Terminal block; 11. Grounding contact piece. Detailed Implementation

[0019] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0020] Please refer to Figures 1 to 5 A high-voltage test switching device suitable for multiple types of circuit breakers, comprising a housing, an operating section, a switching section, and a current-conducting section;

[0021] The upper end of the housing has a slide rail channel for accommodating the operating part;

[0022] The operating unit includes a switching button and a telescopic contact; the switching button is connected to the telescopic contact; the telescopic contact is located above the switching unit; the operating unit moves along the slide rail channel;

[0023] The switching unit includes a conversion circuit board, contact plates, and wiring terminals; the contact plates and wiring terminals are soldered onto the conversion circuit board.

[0024] The flow guide includes a socket, a terminal block, a socket circuit wire, and a switching circuit wire. The socket is located at the lower end of the housing and corresponds one-to-one with the contact piece. The end of the socket near the conversion circuit board is connected to the terminal block through the socket circuit wire. The terminal block is connected to the telescopic contact through the switching circuit wire.

[0025] As described above, the beneficial effects of this invention are as follows: Designed for the secondary aviation plug structure of various 10kV circuit breakers, it improves the robustness, safety, and efficiency of the secondary circuit test wiring for high-voltage testing of 10kV circuit breakers. Firstly, the pin arrangement provides ample space, ensuring sufficient working space and avoiding problems such as poor robustness and low safety caused by insufficient spacing, thus guaranteeing reliable connection of the test clamps. Secondly, it is versatile and can be used with various models of 10kV circuit breaker secondary aviation plugs. Thirdly, it is highly efficient, easy and quick to operate, and can rapidly switch between secondary circuits required for high-voltage testing of different models of 10kV circuit breakers. It is widely applicable to the test wiring needs of secondary circuits for high-voltage testing of various models of 10kV circuit breakers, achieving efficient, safe, and reliable electrical connections.

[0026] Please refer to Figure 4 Furthermore, the switching part also includes a grounding contact piece; the grounding contact piece is located at one end of the slide rail channel, and the grounding contact piece includes a grounding contact piece telescopic head connected to the inside of the housing.

[0027] As described above, when the device switching button is moved to the "circuit grounding" position, the switching button base will press down the grounding contact telescopic head, so that the grounding contact contacts the wiring terminal, thereby grounding the entire secondary circuit of the circuit breaker.

[0028] Furthermore, the inner side of the slide rail channel of the housing also has a slot, and the switching button is provided with a locking foot structure that matches the slot of the housing.

[0029] Furthermore, a spring is provided inside the telescopic contact.

[0030] As described above, the switching button is designed with a locking foot. The elasticity of the built-in spring in the telescopic contact allows the locking foot to engage with the slot in the outer casing of the device when the switching button is moved to the corresponding position, thus fixing the switching button in place.

[0031] Furthermore, the contact piece and the terminal block are connected via copper plating on the conversion circuit board.

[0032] As described above, this device arranges the secondary circuits of the 10kV circuit breaker in a certain order through a switching circuit and switches the circuits out. It can quickly switch between various model requirements and full circuit grounding. The operation is simple, fast and safe, which can reduce the skill level requirements of the operators and improve the work efficiency.

[0033] Furthermore, the terminal block is a hollow cylinder.

[0034] As described above, the terminal blocks support both alligator clip clamping and banana plug insertion.

[0035] Furthermore, the socket includes two or more types of sockets.

[0036] Furthermore, the distance between the sockets is 8 to 12 millimeters.

[0037] As described above, the sockets are designed according to the arrangement of secondary aviation plugs for different models of 10kV circuit breakers, and can accommodate various models of secondary aviation plugs for 10kV circuit breakers.

[0038] The high-voltage test switching device of the present invention, applicable to multiple types of circuit breakers, provides ample pin operating space, is suitable for various types of secondary aviation connectors, and enables simple and quick circuit switching. The following detailed embodiments illustrate this:

[0039] Example 1

[0040] Please refer to Figures 1 to 5 A high-voltage test switching device suitable for multiple types of circuit breakers, comprising a housing, an operating section, a switching section, and a current-conducting section;

[0041] The upper end of the housing has a slide rail channel for accommodating the operating part, and the inner side of the slide rail channel of the housing also has a slot.

[0042] The operating unit includes a switching button 2 and a telescopic contact 4. The switching button 2 is connected to the telescopic contact 4. The switching button 2 is also provided with a locking foot structure that fits into the slot of the housing. The telescopic contact 4 is located above the switching unit. The operating unit moves along the slide rail channel. A spring is provided inside the telescopic contact 4.

[0043] For details, please refer to Figure 4 The elasticity of the telescopic contact 4 allows the switch button 2 to be moved to the corresponding position, and the locking angle is embedded in the slot of the device housing to fix the switch button 2.

[0044] The switching unit includes a conversion circuit board 6, a contact piece 5, a grounding contact piece 11, and a terminal block 10. The contact piece 5 and the terminal block 10 are soldered onto the conversion circuit board 6. The grounding contact piece 11 is located at one end of the slide rail channel of the housing, and the grounding contact piece 11 includes a grounding contact piece telescopic head 8, which is connected to the inside of the housing. The contact piece 5 and the terminal block 10 are connected by copper plating on the conversion circuit board 6.

[0045] Specifically, the conversion circuit board 6 can arrange the secondary circuits of the 10kV circuit breaker secondary aviation plugs on the conversion circuit board 6 and switch the circuits out. It can also arrange the wiring terminals 10 required for high-voltage testing of different models of 10kV circuit breakers to access the secondary circuits in a sequential manner and connect them to the contact piece 5, so that the circuit breaker can quickly switch between various model requirements and full circuit grounding.

[0046] The flow guide includes a socket 1, a terminal block 3, a socket circuit wire 9, and a switching circuit wire 7. The socket 1 is located at the lower end of the housing and corresponds one-to-one with the contact piece 5. The end of the socket 1 near the conversion circuit board 6 is connected to the terminal block 10 through the socket circuit wire 9. The socket 1 includes two or more types of sockets, and the distance between the sockets 1 is 10 mm.

[0047] Specifically, socket 1 is designed according to the arrangement of secondary aviation plugs for different models of 10kV circuit breakers, allowing for the insertion of various models of secondary aviation plugs for 10kV circuit breakers. Furthermore, a universal mating structure is designed to address the similar structural characteristics of 10kV circuit breaker secondary aviation plugs, overcoming the shortcomings of limited space for pins within the 10kV circuit breaker secondary aviation plug, difficulty in fixing test wiring, and the need to locate corresponding terminals in the circuit.

[0048] Among them, terminal 3 is a hollow cylinder, which is connected to telescopic contact 4 through switching circuit wire 7.

[0049] Specifically, terminal 3 is a hollow terminal with a diameter of 4mm, supporting both alligator clip clamping and 4mm banana plug insertion.

[0050] In addition, through the cooperation of various parts, the "one-click full circuit grounding" function can also be realized. When the device switching button 2 is moved to the "circuit grounding" position, the base of the switching button 2 will press down the grounding contact telescopic head 8, so that the grounding contact 11 contacts the wiring terminal 10, thereby grounding the entire secondary circuit of the 10kV circuit breaker. The secondary aviation plug of the 10kV circuit breaker high-voltage switch is connected to this device through the socket 1. Positioning bolts are also provided on both sides of the housing to fix the aviation plug. The end of the socket 1 near the conversion circuit board 6 is connected to the terminal 10 through the circuit wire of the socket 1. The terminal 10 is soldered on the conversion circuit board 6. The conversion circuit board 6 arranges several different sets of terminal 10 in groups longitudinally. The contact piece 5 is soldered to these endpoints printed by the conversion circuit. The telescopic contact 4 has a built-in spring to achieve good contact with the contact piece 5. The switching circuit wire 7 connected to the telescopic contact 4 is a solid wire and is directly connected to the terminal 3. The switching button 2 is provided with a protruding locking foot that fits into the housing slot. The elasticity of the telescopic contact 4 lifts the switching button 2. After pressing the switching button 2, the protruding locking foot of the button separates from the housing slot, allowing the button to move freely to other sets of contact pieces 5, thereby realizing the switching of different terminal wiring.

[0051] In summary, the present invention provides a high-voltage test switching device applicable to multiple types of circuit breakers. By setting up a conversion circuit board and cooperating with various types of sockets, the versatility of the circuit breakers is expanded, making the operation simpler, faster, and more efficient.

[0052] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0054] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A high-voltage test switching device suitable for multiple types of circuit breakers, comprising a housing, an operating section, a switching section, and a current-conducting section, characterized in that: The upper end of the housing has a slide rail channel for accommodating the operating part; The operating unit includes a switching button and a telescopic contact; the switching button is connected to the telescopic contact; the telescopic contact is located above the switching unit; the operating unit moves along the slide rail channel; The switching unit includes a conversion circuit board, contact plates, and wiring terminals; the contact plates and wiring terminals are soldered onto the conversion circuit board. The flow guide includes a socket, a terminal block, a socket circuit wire, and a switching circuit wire. The socket is located at the lower end of the housing and corresponds one-to-one with the contact piece. The end of the socket near the conversion circuit board is connected to the terminal block through the socket circuit wire. The terminal block is connected to the telescopic contact through the switching circuit wire. The switching unit further includes a grounding contact; the grounding contact is located at one end of the slide rail channel, and the grounding contact includes a grounding contact telescopic head, which is connected to the inside of the housing; When the switching button is moved to the position of the grounding contact, the switching button base will press down the telescopic head of the grounding contact, so that the grounding contact contacts the wiring terminal, thereby grounding the entire secondary circuit of the circuit breaker.

2. The high-voltage test switching device applicable to multiple circuit breakers according to claim 1, characterized in that: The inner side of the slide rail channel of the housing also has a slot, and the switching button is provided with a locking foot structure that matches the slot of the housing.

3. The high-voltage test switching device applicable to multiple circuit breakers according to claim 1, characterized in that: A spring is installed inside the telescopic contact.

4. A high-voltage test switching device suitable for multiple circuit breaker models according to claim 1, characterized in that: The contact piece and the terminal block are connected by copper plating on the conversion circuit board.

5. A high-voltage test switching device suitable for multiple circuit breaker models according to claim 1, characterized in that: The terminal block is a hollow cylinder.

6. A high-voltage test switching device suitable for multiple circuit breaker models according to claim 1, characterized in that: The socket includes two or more types of sockets.

7. A high-voltage test switching device suitable for multiple circuit breaker models according to claim 1, characterized in that: The distance between the sockets is 8 to 12 millimeters.

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