A power system fault detection apparatus

Abstract

The utility model discloses a kind of electric power system fault detection devices, including clamp body and adjusting part: the top of the clamp body is provided with tong head a, the adjusting part is arranged in the side of clamp body, the adjusting part has carriage slidingly arranged in the side of clamp body, the top of the carriage is provided with tong head b, the inside of tong head b and tong head a are embedded with iron core, the carriage sliding drives tong head b displacement, make tong head b and carriage abutment form closed formation annular magnetic circuit, the side of the carriage is provided with tension spring, one end of the tension spring is connected with clamp body. The utility model is provided with adjusting part, can be moved by sliding carriage and drive tong head b, make it and tong head a abutment form annular magnetic circuit, utilize iron core to induct the magnetic field change of line in electric power system, to detect whether electric power system exists fault, tension spring can provide certain tension after carriage sliding, convenient for carriage reset.

Description

Technical Field

[0001] This utility model relates to the field of power equipment testing technology, specifically a power system fault detection device. Background Technology

[0002] A current transformer test clamp is a power system fault detection device. In electrical systems, when equipment malfunctions or operates abnormally, the current transformer test clamp can be used to quickly detect whether current is flowing through the circuit. For example, in a complex industrial automated production line, if a motor suddenly stops running, the current transformer test clamp can be used to test along the motor's power supply line. If no current is detected in a certain section of the line, it can be preliminarily determined that the fault may lie in that section of the line, such as a broken circuit or a blown fuse. The internal jaws of the current transformer test clamp use a high-permeability iron core, typically designed in an openable clamp shape to easily clamp the conductor being tested. Its function is to concentrate the magnetic field generated around the conductor being tested, increasing the magnetic flux and thus improving the sensitivity of the detection.

[0003] Existing mutual inductance testing clamps are ring-shaped snap-fit ​​structures, such as... Figure 1 As shown, a torsion spring is typically installed internally to provide closing force for the jaws. However, when the torsion spring ages, its elasticity decreases, causing the jaws to fail to close completely. This is especially problematic when measuring thicker wires, introducing air gap errors that lead to lower or unstable measurement values. Furthermore, the torsion spring is integrated into the jaw head module, making replacement difficult. Due to the difficulty of replacing the torsion spring, to ensure accuracy and reliability of testing, the common practice is to replace the entire jaw head once the torsion spring's elasticity decreases. However, in reality, apart from the aging torsion spring, other parts of the jaw head may still be intact and functional. Directly replacing the jaw head undoubtedly results in unnecessary waste of resources and increased operating costs. Utility Model Content

[0004] The purpose of this invention is to provide a power system fault detection device to solve the problems mentioned in the background art.

[0005] To solve the above problems, this utility model provides the following technical solution: a power system fault detection device, comprising a clamp body and an adjustment unit:

[0006] The top of the clamp body is provided with a clamp head a, and the adjustment part is provided on the side of the clamp body. The adjustment part has a slide that is slidably provided on the side of the clamp body. The top of the slide is provided with a clamp head b. Both the clamp head b and the clamp head a have iron cores embedded inside. The slide moves the clamp head b to move, so that the clamp head b and the slide abut against each other to form a closed annular magnetic circuit. The side of the slide is provided with a tension spring, and one end of the tension spring is connected to the clamp body.

[0007] By adopting the above technical solution, the sliding carriage can drive the clamp head b to move, so that it comes into contact with the clamp head a to form a ring magnetic circuit. The iron core is used to sense the changes in the magnetic field of the power line, thereby detecting whether there is a fault in the power system. The tension spring can provide a certain tension after the carriage slides, which facilitates the carriage to reset.

[0008] Preferably, the adjustment part also has a slider disposed on the side of the slide, and the side of the clamp body is provided with a sliding groove, the slider being embedded in the sliding groove and vertically slidably connected to the clamp body.

[0009] By adopting the above technical solution, the slide can slide vertically along the slide groove on the side of the clamp body. The cooperation between the slider and the slide groove can ensure the stability and accuracy of the slide sliding, and prevent the slide from deviating during the sliding process, thereby ensuring that the clamp head b can accurately abut against the clamp head a to form a ring magnetic circuit.

[0010] Preferably, the adjustment part also has an inner cavity formed on the side of the carriage, and the tension spring is located inside the inner cavity.

[0011] By adopting the above technical solution, the tension spring can be hidden in the inner cavity, avoiding the tension spring from being exposed to the outside environment. For example, dust and moisture may cause the tension spring to rust or be damaged. At the same time, it can also prevent the tension spring from interfering with other objects during the use of the device, ensuring that the tension spring can perform its tensile function normally.

[0012] Preferably, the adjustment part also has a hook b disposed inside the inner cavity, which engages with one end of the tension spring, and a hook a is disposed on the side of the clamp body, with the end of the tension spring away from the hook b engaging with the hook a.

[0013] By adopting the above technical solution, the installation and disassembly of the tension spring can be facilitated. When the tension spring is damaged or needs to be replaced, it can be directly removed from hooks b and a for replacement. At the same time, hooks b and a can ensure the connection stability of the tension spring and ensure that the tension spring can provide tension normally during the sliding of the carriage.

[0014] Preferably, the sides of the carriage are provided with anti-slip stripes.

[0015] By adopting the above technical solution, the friction between the operator's hand and the slide can be increased when the operator slides the slide, preventing the hand from slipping during the sliding process, and enabling the operator to control the sliding of the slide more conveniently and stably.

[0016] Preferably, the adjustment part also has a slot on the side of the carriage, and a protective cover is provided on the side of the slot, which covers the inner cavity.

[0017] By adopting the above technical solution, the protective cover can further protect the components such as the tension spring inside the cavity, prevent dust and debris from entering the cavity, ensure the normal working environment of the tension spring and other components, and extend their service life.

[0018] Preferably, the protective cover has protrusions on its side and a concave surface inside the slot, so that the protective cover is embedded in the slot and slidably engaged with it.

[0019] By adopting the above technical solution, the protective cover can be easily installed into the slot, and the cooperation between the protrusions and the concave surface can ensure the stability of the connection between the protective cover and the slot, making it less likely to fall off.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: By providing an adjustment part, the sliding carriage can drive the pliers head b to move, so that it abuts against the pliers head a to form a ring magnetic circuit. The iron core is used to sense the magnetic field changes of the power system lines, thereby detecting whether there is a fault in the power system. The tension spring can provide a certain tension after the carriage slides, which facilitates the carriage to reset. When the tension spring ages, the protective cover can be removed by sliding to replace the tension spring inside the cavity. The replacement process is convenient and quick, which improves the service life of the pliers and reduces the cost of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an existing mutual inductance detection clamp structure;

[0022] Figure 2 This is a schematic diagram of the overall structure of this application;

[0023] Figure 3 This is a schematic diagram of the overall structure of this application;

[0024] Figure 4 This is a schematic diagram of the adjustment section structure of this application;

[0025] Figure 5 This is a schematic diagram of the adjustment section structure of this application;

[0026] Figure 6 This is a schematic diagram of the clamp structure of this application.

[0027] In the diagram: 1. Pliers body; 101. Pliers head a; 102. Slide groove; 103. Hook a; 2. Adjustment part; 201. Slide frame; 202. Pliers head b; 203. Slider; 204. Slot; 205. Inner cavity; 206. Hook b; 207. Tension spring; 208. Protective cover. Detailed Implementation

[0028] 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.

[0029] Please see Figure 2 , Figure 3 and Figure 4 This embodiment provides a technical solution: a power system fault detection device, including a clamp body 1 and an adjustment part 2. The clamp body 1 has a clamp head a101 at its top and a connecting wire at its bottom for connecting other instruments. The adjustment part 2 is located on the side of the clamp body 1 and has a slide 201 slidably mounted on the side of the clamp body 1. A clamp head b202 is located at the top of the slide 201. Both the clamp head b202 and the clamp head a101 have embedded iron cores inside. The slide 201 slides to move the clamp head b202. The pliers are moved so that the pliers head b202 abuts against the slide 201 to form a closed annular magnetic circuit. A tension spring 207 is provided on the side of the slide 201. One end of the tension spring 207 is connected to the pliers body 1. The pliers head b202 can be moved by sliding the slide 201 so that it abuts against the pliers head a101 to form an annular magnetic circuit. The iron core is used to sense the change in the magnetic field of the line in the power system, thereby detecting whether there is a fault in the power system. The tension spring 207 can provide a certain tension after the slide 201 slides, so that the slide 201 can be reset.

[0030] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a power system fault detection device, including a clamp body 1 and an adjustment unit 2.

[0031] A slider 203 is provided on the side of the slide 201, and a groove 102 is provided on the side of the clamp body 1. The slider 203 is embedded in the groove 102 and vertically slidably connected to the clamp body 1, so that the slide 201 can slide vertically along the groove 102 on the side of the clamp body 1. The cooperation between the slider 203 and the groove 102 can ensure the stability and accuracy of the slide 201 sliding, and prevent the slide 201 from deviating during the sliding process, thereby ensuring that the clamp head b202 can accurately abut against the clamp head a101 to form a ring magnetic circuit.

[0032] An inner cavity 205 is provided on the side of the carriage 201. The tension spring 207 is located inside the inner cavity 205, which can hide the tension spring 207 and prevent it from being exposed to the outside environment. For example, dust and moisture may cause the tension spring 207 to rust or be damaged. At the same time, it can also prevent the tension spring 207 from interfering with other objects during the use of the device, ensuring that the tension spring 207 can perform its tension function normally.

[0033] Inside the inner cavity 205, a hook b206 is provided, which engages with one end of the tension spring 207. A hook a103 is provided on the side of the clamp body 1, and the end of the tension spring 207 away from the hook b206 engages with the hook a103. This facilitates the installation and removal of the tension spring 207. When the tension spring 207 is damaged or needs to be replaced, it can be directly removed from the hook b206 and the hook a103 for replacement. At the same time, the hook b206 and the hook a103 ensure the connection stability of the tension spring 207, ensuring that the tension spring 207 can provide tension normally during the sliding of the slide 201.

[0034] The side of the slide 201 is provided with anti-slip stripes, which can increase the friction between the operator's hand and the slide 201 when the operator slides the slide 201, prevent the hand from slipping during the sliding process, and make it easier and more stable for the operator to control the sliding of the slide 201.

[0035] A slot 204 is provided on the side of the carriage 201, and a protective cover 208 is provided on the side of the slot 204. The protective cover 208 covers the inner cavity 205, which can further protect the components such as the tension spring 207 in the inner cavity 205, prevent dust, debris and other objects from entering the inner cavity 205, ensure the normal working environment of the components such as the tension spring 207, and extend their service life.

[0036] The protective cover 208 has protrusions on its side and a concave surface inside the slot 204. The protective cover 208 is embedded in the slot 204 and slidably engaged with it, which allows the protective cover 208 to be easily installed on the slot 204. The cooperation between the protrusions and the concave surface ensures the stability of the connection between the protective cover 208 and the slot 204 and prevents it from falling off.

[0037] Working principle: The operator holds the slide 201 with their hand. Because the slide 201 has anti-slip stripes on its side, the friction between the hand and the slide 201 is increased, allowing for stable vertical sliding of the slide 201 along the groove 102 on the side of the clamp body 1. During sliding, the slider 203 is embedded in the groove 102, ensuring the stability and accuracy of the slide 201's sliding and preventing deviation. As the slide 201 slides, the clamp head b202 at its top moves accordingly until it comes into contact with the clamp head a101 at the top of the clamp body 1. At this point, the clamp head b202 and the iron core embedded inside the clamp head a101 form a closed annular magnetic circuit. The iron core in this annular magnetic circuit is used to sense changes in the magnetic field of the power system's lines. When a fault occurs in the power system, the magnetic field of the lines will change abnormally. Other instruments connected via connecting wires can detect these changes, thereby determining whether a fault has occurred in the power system. During the sliding process of the slide 201... The tension spring 207 is located inside the inner cavity 205 opened on the side of the slide 201, avoiding the influence of the external environment. One end of the tension spring 207 is connected to the slide 201 through the hook b206, and the other end is connected to the clamp body 1 through the hook a103. The connection is stable and convenient for installation and disassembly. When the operator releases the slide 201, the tension spring 207 will provide tension to reset the slide 201. At the same time, the protective cover 208 set on the side slot 204 of the slide 201 is slidably engaged with the concave surface inside the slot 204 through the protrusion on the side, covering the inner cavity 205, further preventing dust, debris and other objects from entering the inner cavity 205, providing a good working environment for components such as the tension spring 207, and extending their service life. When the tension spring 207 ages, the protective cover 208 can be slidably removed to replace the tension spring 207 inside the inner cavity 205. The replacement process is convenient and quick, improving the service life of the clamp body 1 and reducing the cost of use.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power system fault detection device, characterized in that, include: The clamp body (1) is provided with a clamp head a (101) at the top; Adjustment part (2) is provided on the side of the clamp body (1). The adjustment part (2) has a slide (201) that is slidably provided on the side of the clamp body (1). A clamp head b (202) is provided on the top of the slide (201). Both the clamp head b (202) and the clamp head a (101) are embedded with iron cores. The slide (201) slides and drives the clamp head b (202) to move, so that the clamp head b (202) and the slide (201) abut against each other to form a closed annular magnetic circuit. A tension spring (207) is provided on the side of the slide (201). One end of the tension spring (207) is connected to the clamp body (1).

2. The power system fault detection device according to claim 1, characterized in that: The adjustment part (2) also has a slider (203) disposed on the side of the slide (201), and a groove (102) is provided on the side of the clamp body (1). The slider (203) is embedded in the groove (102) and is vertically slidably connected to the clamp body (1).

3. The power system fault detection device according to claim 1, characterized in that: The adjustment part (2) also has an inner cavity (205) opened on the side of the carriage (201), and the tension spring (207) is located inside the inner cavity (205).

4. The power system fault detection device according to claim 3, characterized in that: The adjustment part (2) also has a hook b (206) disposed inside the inner cavity (205), which is engaged with one end of the tension spring (207). The side of the clamp body (1) is provided with a hook a (103), and the end of the tension spring (207) away from the hook b (206) is engaged with the hook a (103).

5. A power system fault detection device according to claim 1, characterized in that: The side of the carriage (201) is provided with anti-slip stripes.

6. A power system fault detection device according to claim 4, characterized in that: The adjustment part (2) also has a slot (204) on the side of the carriage (201), and a protective cover (208) is provided on the side of the slot (204) to cover the inner cavity (205).

7. A power system fault detection device according to claim 6, characterized in that: The protective cover (208) has protrusions on its side and a concave surface inside the slot (204). The protective cover (208) is embedded in the slot (204) and is slidably engaged with the slot (204).

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