A cluster capacitor bank phase-to-phase current tester and its use method

Abstract

The invention discloses a phase-to-phase current tester for a cluster capacitor group, and relates to the field of current testers, comprising: a box body, which is arranged in the form of a box body, and a cover plate is rotatably connected to the top of the box body through a rotating shaft, and the cover plate is used to seal the box body; a tester body is installed inside the box body, and a plurality of interfaces are arranged on the tester body, and protective devices are symmetrically arranged on both sides of the interfaces. The invention utilizes a setting mode in which a pressing mechanism and a dustproof mechanism are matched, and when a joint is downwardly connected to the interface, the pressing mechanism is squeezed to perform a fixed-axis flip, so that the joint and the interface just match, and at the same time, the pressing mechanism presses the joint to prevent it from falling off, and cooperates with the pressing mechanism to unlock and pull the dustproof mechanism, so that the dustproof mechanism no longer covers the top of the interface, and the two sides of the joint are pressed by two pressing mechanisms to adapt to various shapes of the joint, and are no longer limited to a circle. Compared with the threaded connection mode, the use is more flexible and convenient, and the service life is also longer.

Description

Technical Field

[0001] The invention relates to the field of current testers, and in particular to a phase-to-phase current tester for a cluster capacitor group and a use method thereof. Background Art

[0002] The cluster capacitor bank phase-to-phase current tester is a device used to test the phase-to-phase current of a cluster capacitor bank. A cluster capacitor bank is a system consisting of multiple capacitors, commonly used in power systems to provide reactive power compensation and stabilize voltage. Phase-to-phase current refers to the current flowing between the capacitors in the cluster capacitor bank. The main function of the cluster capacitor bank phase-to-phase current tester is to measure and monitor the phase-to-phase current between the capacitors in the cluster capacitor bank. This is very important for evaluating the operating status of the cluster capacitor bank and detecting imbalance or faults between capacitors.

[0003] An interface is provided on the tester. When the phase-to-phase current between each capacitor is tested, one end of the connecting line is connected to the capacitor and the other end is connected to the tester to achieve electrical connection and test the phase-to-phase current. The tester is generally provided with an interface that matches the connector on the connecting line. The electrical connection is achieved by plugging the connector and the interface. In order to ensure the stability between the connector and the interface, an external thread is generally provided on the outside of the interface and the connector. By rotating the threaded sleeve on the outside of the connector, the threaded sleeve can be rotated between the interface and the connector to limit the relative position of the interface and the connector to prevent it from falling off. However, the threaded connection method has great limitations. On the one hand, the threaded connection is susceptible to stress concentration and fatigue cracks are prone to occur under long-term use, resulting in a limited fatigue life of the connection. On the other hand, the shape of the thread is limited to a circle. When the connector is rectangular, the thread cannot be used for positioning, which results in great limitations on the threaded connection method and inflexible and inconvenient use. Summary of the invention

[0004] The object of the present invention is to provide a phase-to-phase current tester for a cluster capacitor bank to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a cluster capacitor bank phase-to-phase current tester and a method for using the same, comprising:

[0006] The box body is arranged in a box body, and the top of the box body is rotatably connected to a cover plate via a rotating shaft, and the cover plate is used to seal the box body;

[0007] The box body is provided with a tester body, which is provided with a plurality of interfaces for plugging with external connectors. Protective devices are symmetrically provided on both sides of the interfaces for limiting and preventing the connectors from falling off.

[0008] Preferably, the protective device comprises:

[0009] Side panels, the side panels are mounted on the top of the tester body, and the side panels are symmetrically arranged;

[0010] A pressing mechanism, the pressing mechanism is rotatably disposed between the side plates, and the pressing mechanism is used to limit the position of the joint;

[0011] A dustproof mechanism, wherein the dustproof mechanism is disposed below the pressing mechanism, and the dustproof mechanism is disposed between the side plates, and the dustproof mechanism is connected to an end of the pressing mechanism;

[0012] A one-way rotation self-locking mechanism is installed at one end of the pressing mechanism, and is used for self-rotation after the pressing mechanism rotates.

[0013] Preferably, the pressing mechanism comprises:

[0014] A rotating and pressing assembly, wherein the rotating and pressing assembly is rotatably and interlacedly connected with the side plate;

[0015] A traction assembly is installed through the two ends of the rotating and pressing assembly, and is used for traction of the dustproof mechanism.

[0016] Preferably, the rotary pressing assembly comprises:

[0017] A rotating shaft, the rotating shaft is rotatably interlaced with the side plate;

[0018] A special-shaped pressing piece, wherein the corner of the special-shaped pressing piece is fixedly interlaced with the middle of the rotating shaft, and the special-shaped pressing piece is arranged in a V shape;

[0019] An arc-shaped rod, the arc-shaped rod is installed on the special-shaped pressing piece, and the arc-shaped rod is concentrically arranged with the rotating shaft;

[0020] A fixing plate, wherein the fixing plate is fixedly connected between adjacent side plates, and the arc-shaped rod is slidably interlaced with the fixing plate;

[0021] A first spring is movably sleeved on the outside of the arc rod.

[0022] Preferably, the special-shaped pressing piece includes:

[0023] A pressing portion, the pressing portion is connected to one end of the arc-shaped rod, and the pressing portion is used to limit the compression of the joint;

[0024] The extrusion part is integrated with the pressing part, and when the joint is connected to the interface, the extrusion part is squeezed to drive the fixed axis of the pressing part to rotate synchronously.

[0025] Preferably, the traction assembly comprises:

[0026] A winding roller, wherein the winding roller is fixedly mounted on the rotating shaft;

[0027] A traction rope, one end of which is wound around a winding roller, and the other end of which is connected to a dustproof mechanism;

[0028] A limiting roller is installed between adjacent side plates and is used to guide the traction rope.

[0029] Preferably, the dust prevention mechanism comprises:

[0030] A dustproof plate, the dustproof plate being slidably disposed between the side plates;

[0031] A slide plate, which is mounted on the bottom end of the dustproof plate;

[0032] A guide rod, both ends of which are connected to mounting plates, the mounting plates are installed between the side plates, and the guide rod is slidably interlaced with the slide plate;

[0033] A second spring is movably sleeved on the outside of the guide rod.

[0034] Preferably, the one-way rotation self-locking mechanism comprises:

[0035] A ratchet wheel, the ratchet wheel being inserted and installed at the end of the rotating shaft;

[0036] One-way locking components, a plurality of which are arranged in a ring shape on the outside of the ratchet, and the one-way locking components are installed on the side plate;

[0037] A rotating cover is rotatably arranged outside the one-way locking assembly.

[0038] Preferably, the one-way locking assembly comprises:

[0039] A fixing column, wherein the fixing column is fixedly mounted on the surface of the side plate;

[0040] A special-shaped clamping piece, wherein the corner of the special-shaped clamping piece is rotatably connected with the fixed column, the special-shaped clamping piece is arranged in a V shape, and the special-shaped clamping piece includes a clamping tooth portion and a connecting portion, the end of the clamping tooth portion cooperates with the tooth groove of the ratchet, and the clamping tooth portion and the connecting portion are arranged in an integrated manner;

[0041] A tension spring, one end of which is connected to the end of the connecting portion, and the other end of which is connected to a fixing block, which is fixedly mounted on the surface of the side plate;

[0042] An extrusion column, wherein the extrusion column is arranged on the inner side of the special-shaped clamping piece, and one end of the extrusion column is fixedly connected to the inner wall of the rotating cover;

[0043] The limiting bracket is fixedly mounted on the surface of the side plate, and the extrusion column is arranged between the connecting part and the limiting bracket.

[0044] The present invention also provides a method for using the phase-to-phase current tester of a cluster capacitor bank, comprising the following specific steps:

[0045] Step 1: When the connector is inserted downward between the interfaces, the connector will first touch the extrusion part, exerting downward pressure on the extrusion part, so that the extrusion part squeezes and deforms the first spring, and also drives the synchronous rotation of the rotating shaft. The rotation of the rotating shaft drives the synchronous rotation of the pressing part, so that the pressing part can rotate and press on the top of the connector to prevent the connector from moving upward and ensure the tightness of the connection. On the other hand, the rotation of the rotating shaft drives the rotation of the winding roller, so that the winding roller winds up the traction rope, so that the winding movement of the traction rope pulls the position of the dustproof plate.

[0046] Step 2: Under the limited interlacing between the slide plate and the guide rod, the traction rope pulls the dustproof plate, which can drive the dustproof plate to move in a translational manner, so that the dustproof plate moves in a direction away from the interface, no longer blocks the interface, and does not affect the plugging between the connector and the interface;

[0047] Step three: When the rotating shaft rotates clockwise, it will drive the synchronous movement of the ratchet. At this time, the one-way locking component will not affect the clockwise rotation of the ratchet. Through the cooperation between the one-way locking component and the one-way locking component, the counterclockwise rotation of the ratchet can be locked to ensure that when the special-shaped pressing piece is rotated to the state of tightening the docking joint, it can neither continue to rotate downward clockwise nor rotate upward counterclockwise to ensure the stability of the tightening of the special-shaped pressing piece.

[0048] Technical effects and advantages of the present invention:

[0049] (1) The present invention utilizes a setting mode in which a pressing mechanism and a dustproof mechanism cooperate with each other. When the joint is connected to the interface downward, the pressing mechanism is squeezed to perform a fixed axis flip, so that the joint and the interface fit together. At the same time, the pressing mechanism presses the joint to prevent it from falling off, and cooperates with the pressing mechanism to unlock and pull the dustproof mechanism, so that the dustproof mechanism no longer covers the top of the interface. The two pressing mechanisms press the two sides of the joint to adapt to various shapes of the joint, which is no longer limited to a circular shape. Compared with the threaded connection mode, the joint is more flexible and convenient to use and has a longer service life.

[0050] (2) The present invention utilizes a configuration in which the dustproof plate and the second spring cooperate with each other. In the original state, the traction assembly will not pull the dustproof plate. At this time, under the elastic compression of the second spring on the slide plate, the dustproof plate can be kept in a fitted state at the top of the interface, so that it is convenient to seal and block the top of the interface with the two dustproof plates, which is also convenient for dustproof shielding of the top of the interface, making the interface cleaner. The second spring is used to facilitate the reset support of the slide plate, so that when the joint and the interface are no longer matched, the slide plate is elastically supported so that the dustproof plate can be reset to a state of shielding the interface. The sliding and interlacing between the slide plate and the guide rod makes the linear sliding of the dustproof plate more stable.

[0051] (3) The present invention utilizes a setting mode in which a fixed column and a special-shaped retaining piece cooperate with each other, and the fixed column and the special-shaped retaining piece are rotated and interlaced to facilitate the fixed-axis rotation of the limited special-shaped retaining piece. The retaining tooth portion and the ratchet wheel cooperate with each other, so that when the ratchet wheel rotates counterclockwise, the retaining tooth portion can be stuck in the tooth groove of the ratchet wheel, which does not affect the clockwise rotation of the ratchet wheel, and the counterclockwise rotation of the ratchet wheel can be locked in time. The elastic stretching of the special-shaped retaining piece is facilitated by the stretching deformation of the tension spring, so that the special-shaped retaining piece is fixed. The rotation tendency of the fixed column as a fulcrum makes the cooperation between the locking tooth portion and the ratchet more stable. When the connection between the connector and the interface needs to be released, the ratchet needs to be unlocked by counterclockwise rotation. At this time, the rotating cover is rotated counterclockwise to drive the counterclockwise rotation of each extrusion column relative to the ratchet, thereby pushing the connecting part, so that the connecting part synchronously drives the counterclockwise rotation of the locking tooth portion, so that the one-way locking component no longer contacts the ratchet, thereby unlocking the ratchet, thereby facilitating the disengagement of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0053] Figure 2 It is a schematic diagram of the internal front structure of the present invention.

[0054] Figure 3 It is a schematic diagram of the internal front structure of the protective device of the present invention.

[0055] Figure 4 It is a schematic diagram of the three-dimensional structure of the protective device of the present invention.

[0056] Figure 5 It is a schematic diagram of the side structure of the protective device of the present invention.

[0057] Figure 6 It is a structural schematic diagram of the pressing mechanism of the present invention.

[0058] Figure 7 It is a structural schematic diagram of the dustproof mechanism of the present invention.

[0059] Figure 8 It is a schematic diagram of the internal structure of the one-way rotation self-locking mechanism of the present invention.

[0060] Fig. 9 It is a structural schematic diagram of the one-way locking assembly of the present invention.

[0061] In the figure: 1, box body; 2, cover plate; 3, tester body; 4, interface; 5, protective device; 51, side plate; 52, pressing mechanism; 521, rotating pressing assembly; 5211, rotating shaft; 5212, special-shaped pressing piece; 52121, pressing part; 52122, squeezing part; 5213, arc rod; 5214, fixing plate; 5215, first spring; 522, traction assembly; 5221, winding roller; 5222, traction rope; 5223, limiting roller; 53, dustproof mechanism; 531, dustproof plate; 532, slide plate; 533, guide rod; 534, second spring; 54, one-way rotation self-locking mechanism; 541, ratchet; 542, one-way locking assembly; 5421, fixing column; 5422, special-shaped locking piece; 54221, locking tooth portion; 54222, connecting portion; 5423, tension spring; 5424, extrusion column; 5425, limiting support; 543, rotating cover. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] The present invention provides Figure 1-9 A phase-to-phase current tester for a cluster capacitor group is shown, comprising: a box body 1, which is arranged in a box body, and a cover plate 2 is rotatably connected to the top of the box body 1 through a rotating shaft, and the cover plate 2 is used to seal the box body 1; a tester body 3 is installed inside the box body 1, and the tester body 3 can measure and monitor the phase-to-phase current between each capacitor in the cluster capacitor group, and a plurality of interfaces 4 are arranged on the tester body 3, and the interface 4 is used to be plugged with an external connector, and protective devices 5 are symmetrically arranged on both sides of the interface 4, and the protective devices 5 are used to limit and prevent the connector from falling off. The protective devices 5 on both sides facilitate the positioning and pressing of the connector, and also prevent a large amount of dust from entering the interior of the interface 4. Through the cooperation of the box body 1 and the cover plate 2, the tester body 3 is conveniently protected and easy to carry.

[0064] Preferably, the protective device 5 includes: a side plate 51, which is mounted on the top of the tester body 3 and is symmetrically arranged; a pressing mechanism 52, which is rotatably arranged between the side plates 51, and is used to limit the position of the joint; a dustproof mechanism 53, which is arranged below the pressing mechanism 52, and the dustproof mechanism 53 is arranged between the side plates 51, and the dustproof mechanism 53 is connected to the end of the pressing mechanism 52; a one-way rotating self-locking mechanism 54, which is mounted on one end of the pressing mechanism 52, and the one-way rotating self-locking mechanism 54 is installed on one end of the pressing mechanism 52. Mechanism 54 is used for the rotation and self-rotation of the pressing mechanism 52. When the joint is connected to the interface 4 downward, the pressing mechanism 52 will be squeezed to perform a fixed-axis flip, so that the joint and the interface 4 fit together. At the same time, the pressing mechanism 52 presses the joint to prevent it from falling off, and cooperates with the pressing mechanism 52 to unlock and pull the dustproof mechanism 53, so that the dustproof mechanism 53 no longer covers the top of the interface 4. The two pressing mechanisms 52 press both sides of the joint to adapt to various shapes of the joint, and are no longer limited to a circle. Compared with the threaded connection method, it is more flexible and convenient to use and has a longer service life.

[0065] Preferably, the pressing mechanism 52 includes: a rotating pressing component 521, which is rotatably and interlacedly connected with the side plate 51; and a traction component 522, which is respectively interlaced and installed at both ends of the rotating pressing component 521, and is used to pull the dustproof mechanism 53.

[0066] Preferably, the rotary pressing assembly 521 includes: a rotating shaft 5211, which is rotatably and interlacedly connected with the side plate 51; a special-shaped pressing piece 5212, whose corner is fixedly and interlacedly connected with the middle of the rotating shaft 5211, and the special-shaped pressing piece 5212 is arranged in a V shape; an arc rod 5213, which is installed on the special-shaped pressing piece 5212, and the arc rod 5213 is concentrically arranged with the rotating shaft 5211; a fixed plate 5214, which is fixedly connected between adjacent side plates 51, and the arc rod 5213 is slidably and interlacedly connected with the fixed plate 5214; and a first spring 5215, which is movably sleeved on the outside of the arc rod 5213. The special-shaped pressing piece 5212 includes: a pressing part 52121, the pressing part 52121 is connected to one end of the arc rod 5213, and the pressing part 52121 is used to limit the compression of the joint; an extrusion part 52122, and the extrusion part 52122 and the pressing part 52121 are integrated. When the joint is connected to the interface 4, the extrusion part 52122 is squeezed to drive the fixed axis of the pressing part 52121 to rotate synchronously, and the fixed axis rotation of the special-shaped pressing piece 5212 relative to the side plate 51 is facilitated by the rotating shaft 5211. Through the sliding interlacing between the arc rod 5213 and the fixed plate 5214, it is convenient to The position of the spring 5215 is limited, and the compression deformation of the first spring 5215 facilitates the elastic support of the extrusion part 52122, so as to reset the extrusion part 52122. Under the elastic support of the first spring 5215, the special-shaped pressing piece 5212 is in an open and obliquely upward state in the original state. At this time, the extrusion part 52122 is close to a horizontal state, so that when the connector touches the extrusion part 52122, it will be squeezed to drive the synchronous rotation movement of the pressing part 52121, so that the connector and the interface 4 are just plugged in, and the pressing part 52121 just positions the connector.

[0067] Preferably, the traction assembly 522 includes: a winding roller 5221, which is fixedly mounted on the rotating shaft 5211; a traction rope 5222, one end of which is wound around the winding roller 5221, and the other end of which is connected to the dustproof mechanism 53; a limiting roller 5223, which is installed between adjacent side plates 51, and the limiting roller 5223 is used to guide the traction rope 5222, so that the traction rope 5222 can pull the dustproof plate 531 horizontally, and the rotation of the winding roller 5221 facilitates the winding movement of the traction rope 5222, thereby facilitating the linkage between the rotating shaft 5211 and the dustproof mechanism 53 through the traction rope 5222, so that the pressing mechanism 52 can be flipped and positioned, and the unsealing movement of the dustproof mechanism 53 can also be driven.

[0068] Preferably, the dustproof mechanism 53 includes: a dustproof plate 531, which is slidably arranged between the side plates 51; a slide plate 532, which is installed at the bottom end of the dustproof plate 531; a guide rod 533, both ends of the guide rod 533 are connected to a mounting plate, the mounting plate is installed between the side plates 51, and the guide rod 533 is slidably connected with the slide plate 532; a second spring 534, which is movably sleeved on the outside of the guide rod 533. In the original state, the traction assembly 522 will not pull the dustproof plate 531. At this time, under the elastic extrusion of the second spring 534 on the slide plate 532 The dustproof plate 531 can be kept in a fitted state on the top of the interface 4, so that the top of the interface 4 can be sealed and covered relatively by the two dustproof plates 531, which is also convenient for dustproof covering the top of the interface 4, making the interface 4 cleaner when used. The second spring 534 is used to facilitate the reset support of the slide plate 532, so that when the joint and the interface 4 no longer cooperate, the slide plate 532 is elastically supported so that the dustproof plate 531 can be reset to a state of covering the interface 4, and the sliding and interlacing between the slide plate 532 and the guide rod 533 makes the linear sliding of the dustproof plate 531 more stable.

[0069] Specifically, the one-way rotation self-locking mechanism 54 includes: a ratchet 541, which is installed through the end of the rotating shaft 5211; a one-way locking component 542, wherein multiple one-way locking components 542 are arranged in a ring shape on the outside of the ratchet 541, and the one-way locking component 542 is installed on the side plate 51; a rotating cover 543, which is rotatably arranged on the outside of the one-way locking component 542, and the rotating cover 543 is used to drive multiple extrusion columns 5424 to rotate counterclockwise at the same time, so that rotating the rotating cover 543 can synchronously unlock the multiple one-way locking components 542, and the one-way locking component 542 is used to limit the one-way rotation of the ratchet 541, which is also convenient for limiting the one-way rotation of the pressing mechanism 52.The one-way locking assembly 542 includes: a fixed column 5421, which is fixedly installed on the surface of the side plate 51; a special-shaped clamping piece 5422, the corner of the special-shaped clamping piece 5422 is rotatably connected with the fixed column 5421, and the special-shaped clamping piece 5422 is arranged in a V shape. The special-shaped clamping piece 5422 includes a clamping tooth portion 54221 and a connecting portion 54222, and the end of the clamping tooth portion 54221 cooperates with the tooth groove of the ratchet 541, and the clamping tooth portion 54221 and the connecting portion 54222 are integrated; a tension spring 5423, one end of the tension spring 5423 is connected to the end of the connecting portion 54222, and the tension spring 5423 is connected to the end of the connecting portion 54222. The other end of the spring 5423 is connected to a fixed block, which is fixedly installed on the surface of the side plate 51; an extrusion column 5424, which is arranged on the inner side of the special-shaped clamping piece 5422, and one end of the extrusion column 5424 is fixedly connected to the inner wall of the rotating cover 543; a limiting support 5425, which is fixedly installed on the surface of the side plate 51, and the extrusion column 5424 is arranged between the connecting portion 54222 and the limiting support 5425, and is interlaced by the rotation between the fixed column 5421 and the special-shaped clamping piece 5422, so as to facilitate the fixed-axis rotation of the limiting special-shaped clamping piece 5422, and the clamping tooth portion 54221 and the ratchet 5 The mutual cooperation between the two makes it possible for the locking tooth portion 54221 to be stuck in the tooth groove of the ratchet wheel 541 when the ratchet wheel 541 rotates counterclockwise, without affecting the clockwise rotation of the ratchet wheel 541, so as to timely lock the counterclockwise rotation of the ratchet wheel 541. The elastic stretching of the special-shaped locking piece 5422 is facilitated by the stretching deformation of the tension spring 5423, so that the special-shaped locking piece 5422 has a rotation tendency with the fixed column 5421 as a fulcrum, making the cooperation between the locking tooth portion 54221 and the ratchet wheel 541 more stable. When it is necessary to release the plug-in between the connector and the interface 4, the counterclockwise rotation of the ratchet wheel 541 needs to be tightened. The locking cam 5422 is unlocked by rotating the rotating cover 543 counterclockwise, thereby driving each squeezing column 5424 to rotate counterclockwise relative to the ratchet 541, thereby pushing the connecting portion 54222, so that the connecting portion 54222 synchronously drives the locking tooth portion 54221 to rotate counterclockwise, so that the one-way locking component 542 is no longer in contact with the ratchet 541, so as to unlock the ratchet 541, thereby facilitating the disengagement of the joint, and limiting the position of the squeezing column 5424 through the limiting support 5425 to prevent the squeezing column 5424 from rotating clockwise, and restricting the squeezing column 5424 to rotate counterclockwise.

[0070] Method of use of the present invention:

[0071] When the connector is inserted downwardly into the interface 4, the connector will first touch the extrusion portion 52122, applying downward pressure to the extrusion portion 52122, so that the extrusion portion 52122 squeezes and deforms the first spring 5215, and also drives the synchronous rotation of the rotating shaft 5211. The rotation of the rotating shaft 5211, on the one hand, drives the synchronous rotation of the pressing portion 52121, so that the pressing portion 52121 can be rotated and pressed on the top of the connector to prevent the connector from moving upward and ensure the tightness of the connection. On the other hand, the rotation of the rotating shaft 5211 can drive the rotation of the winding roller 5221, so that the winding roller 5221 can reel in the traction rope 5222, so that the reeling movement of the traction rope 5222 will pull the position of the dustproof plate 531.

[0072] Under the limited insertion between the slide plate 532 and the guide rod 533, the traction movement of the traction rope 5222 on the dustproof plate 531 can drive the dustproof plate 531 to move in a translational manner, so that the dustproof plate 531 moves in a direction away from the interface 4, no longer blocking the interface 4, and does not affect the plugging between the connector and the interface 4;

[0073] When the rotating shaft 5211 rotates clockwise, it will drive the synchronous movement of the ratchet 541. At this time, the one-way locking component 542 will not affect the clockwise rotation of the ratchet 541. Through the cooperation between the one-way locking component 542 and the one-way locking component 542, the counterclockwise rotation of the ratchet 541 can be locked to ensure that when the special-shaped pressing piece 5212 is rotated to the state of tightening the docking head, it can neither continue to rotate downward clockwise nor rotate upward counterclockwise to ensure the stability of the tightening of the special-shaped pressing piece 5212.

[0074] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A phase-to-phase current tester for a cluster capacitor bank, comprising: A box body (1), the box body (1) is arranged in a box body, the top of the box body (1) is rotatably connected to a cover plate (2) via a rotating shaft, and the cover plate (2) is used to seal the box body (1); The invention is characterized in that: a tester body (3) is installed inside the box body (1), a plurality of interfaces (4) are arranged on the tester body (3), the interfaces (4) are used for plugging with external connectors, protective devices (5) are symmetrically arranged on both sides of the interfaces (4), the protective devices (5) are used for limiting the position of the connectors and preventing them from falling off; the protective devices (5) include: Side panels (51), the side panels (51) being mounted on the top of the tester body (3), the side panels (51) being symmetrically arranged; A pressing mechanism (52), the pressing mechanism (52) being rotatably disposed between the side plates (51), the pressing mechanism (52) being used for limiting the position of the joint; A dustproof mechanism (53), wherein the dustproof mechanism (53) is arranged below the pressing mechanism (52), and the dustproof mechanism (53) is arranged between the side plates (51), and the dustproof mechanism (53) is connected to the end of the pressing mechanism (52); A one-way rotation self-locking mechanism (54), the one-way rotation self-locking mechanism (54) is installed at one end of the pressing mechanism (52), the one-way rotation self-locking mechanism (54) is used to rotate the pressing mechanism (52) after rotation; the pressing mechanism (52) comprises: A rotating pressing assembly (521), wherein the rotating pressing assembly (521) is rotatably interlaced with the side plate (51); A traction assembly (522), wherein the traction assembly (522) is respectively installed at two ends of the rotating pressing assembly (521), and the traction assembly (522) is used to pull the dust prevention mechanism (53); the rotating pressing assembly (521) comprises: A rotating shaft (5211), wherein the rotating shaft (5211) is rotatably interlaced with the side plate (51); A special-shaped pressing piece (5212), wherein the corner of the special-shaped pressing piece (5212) is fixedly inserted and connected with the middle of the rotating shaft (5211), and the special-shaped pressing piece (5212) is arranged in a V shape; An arc-shaped rod (5213), wherein the arc-shaped rod (5213) is mounted on the special-shaped pressing member (5212), and the arc-shaped rod (5213) is concentrically arranged with the rotating shaft (5211); A fixing plate (5214), wherein the fixing plate (5214) is fixedly connected between adjacent side plates (51), and the arc-shaped rod (5213) is slidably interlaced with the fixing plate (5214); A first spring (5215), wherein the first spring (5215) is movably sleeved on the outside of the arc-shaped rod (5213). The special-shaped pressing member (5212) comprises: A pressing portion (52121), the pressing portion (52121) is connected to one end of the arc-shaped rod (5213), and the pressing portion (52121) is used to limit the compression of the joint; The extrusion part (52122) is integrated with the pressing part (52121), and when the joint is connected to the interface (4), the extrusion part (52122) is squeezed to drive the fixed axis of the pressing part (52121) to rotate synchronously.

2. The phase-to-phase current tester of a cluster capacitor bank according to claim 1, characterized in that: The traction assembly (522) includes: A winding roller (5221), wherein the winding roller (5221) is fixedly mounted on the rotating shaft (5211); A traction rope (5222), one end of the traction rope (5222) is wound around a winding roller (5221), and the other end of the traction rope (5222) is connected to a dust prevention mechanism (53); A limiting roller (5223), wherein the limiting roller (5223) is installed between adjacent side plates (51), and the limiting roller (5223) is used to guide the traction rope (5222).

3. The phase-to-phase current tester of a cluster capacitor bank according to claim 1, characterized in that: The dust prevention mechanism (53) comprises: A dustproof plate (531), wherein the dustproof plate (531) is slidably disposed between the side plates (51); A slide plate (532), wherein the slide plate (532) is installed at the bottom end of the dustproof plate (531); A guide rod (533), both ends of the guide rod (533) are connected to mounting plates, the mounting plates are installed between the side plates (51), and the guide rod (533) is slidably interlaced with the slide plate (532); A second spring (534), the second spring (534) is movably sleeved on the outside of the guide rod (533).

4. The phase-to-phase current tester of a cluster capacitor bank according to claim 1, characterized in that: The one-way rotation self-locking mechanism (54) comprises: A ratchet (541), wherein the ratchet (541) is inserted and installed at the end of the rotating shaft (5211); One-way locking components (542), a plurality of the one-way locking components (542) are arranged in a ring shape on the outside of the ratchet (541), and the one-way locking components (542) are installed on the side plate (51); A rotating cover (543) is rotatably disposed outside the one-way locking assembly (542).

5. The phase-to-phase current tester of a cluster capacitor bank according to claim 4, characterized in that: The one-way locking assembly (542) comprises: A fixing column (5421), wherein the fixing column (5421) is fixedly mounted on the surface of the side plate (51); A special-shaped clamping piece (5422), wherein the corner of the special-shaped clamping piece (5422) is rotatably interlaced with the fixing column (5421), the special-shaped clamping piece (5422) is arranged in a V-shape, and the special-shaped clamping piece (5422) comprises a clamping tooth portion (54221) and a connecting portion (54222), the end of the clamping tooth portion (54221) cooperates with the tooth groove of the ratchet (541), and the clamping tooth portion (54221) and the connecting portion (54222) are arranged in an integrated manner; A tension spring (5423), one end of the tension spring (5423) being connected to the end of the connecting portion (54222), and the other end of the tension spring (5423) being connected to a fixing block, wherein the fixing block is fixedly mounted on the surface of the side plate (51); An extrusion column (5424), wherein the extrusion column (5424) is arranged on the inner side of the special-shaped clamping piece (5422), and one end of the extrusion column (5424) is fixedly connected to the inner wall of the rotating cover (543); The limiting support (5425) is fixedly mounted on the surface of the side plate (51), and the extrusion column (5424) is arranged between the connecting portion (54222) and the limiting support (5425).

6. A method for using a phase-to-phase current tester of a cluster capacitor bank according to any one of claims 1 to 5, characterized in that: The specific usage steps are as follows: Step 1: When the connector is inserted downwardly into the interface (4), the connector will first touch the extrusion portion (52122), applying downward pressure to the extrusion portion (52122), so that the extrusion portion (52122) squeezes and deforms the first spring (5215), while also driving the synchronous rotation of the rotating shaft (5211). The rotation of the rotating shaft (5211) drives the synchronous rotation of the pressing portion (52121) on the one hand, so that the pressing portion (52121) can be rotated and pressed on the top of the connector to prevent the connector from moving upward and ensure the tightness of the connection. On the other hand, the rotation of the rotating shaft (5211) drives the rotation of the winding roller (5221), so that the winding roller (5221) winds up the traction rope (5222), so that the winding movement of the traction rope (5222) pulls the position of the dustproof plate (531); Step 2: With the limited insertion between the slide plate (532) and the guide rod (533), the traction rope (5222) pulls the dustproof plate (531), which can drive the dustproof plate (531) to move in a translational manner, so that the dustproof plate (531) moves in a direction away from the interface (4), no longer blocks the interface (4), and does not affect the plugging and unplugging between the joint and the interface (4); Step 3: When the rotating shaft (5211) rotates clockwise, it will drive the synchronous movement of the ratchet (541). At this time, the one-way locking component (542) will not affect the clockwise rotation of the ratchet (541). Through the cooperation between the one-way locking component (542) and the one-way locking component (542), the counterclockwise rotation of the ratchet (541) can be locked to ensure that when the special-shaped pressing piece (5212) is rotated to the state of the joint being pressed, it can neither continue to rotate downward clockwise nor rotate upward counterclockwise to ensure the stability of the pressing of the special-shaped pressing piece (5212).

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