Lightning arrester discharge counter tester

Abstract

The utility model discloses a lightning arrester discharge counter tester, which comprises a tester body and spray points arranged on two sides of the top end of the tester body, one end of each spray point far away from the tester body is provided with a lead, and the top end of the tester body is fixedly provided with a right-angle shaft bracket. And main shafts are rotationally installed on the two sides of the surface of the right-angle shaft frame, arc-shaped clamping jaws are fixed to one ends of the surfaces of the main shafts, the bottom ends of the arc-shaped clamping jaws are connected with one end of a wire, and a residual gear transmission structure used for keeping the synchronous reverse rotation state is installed between the two arc-shaped clamping jaws. According to the utility model, the arc-shaped clamping jaw and the lightning arrester can be always kept in good contact, the influence of human factors on the test precision is avoided, the test data is more accurate and reliable, and compared with the traditional hand-held operation, the tester can be installed and fixed through the clamping jaw and the lightning arrester, so that the test efficiency is improved. An operator only needs to place the tester near the lightning arrester, and the device can carry out locking and testing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power facility detection equipment, concretely is lightning arrester discharge counter tester. BACKGROUND

[0002] The function of lightning arrester discharge counter tester is mainly through simulating lightning process, tests the performance of lightning arrester discharge counter, ensures that it can accurately record the discharge times in lightning event. The instrument is used for the maintenance and fault detection of power system, helps the technical personnel to verify the response sensitivity, action reliability of discharge counter and whether there is a fault, and the structure of tester is composed of multiple main parts. First, the power supply part provides necessary high voltage or impulse current for test, simulates the current waveform in lightning, and the impulse current generator is the core part, is responsible for generating the current pulse similar to actual lightning, and the signal detection and recording system is responsible for capturing the working signal of counter and recording the discharge times, and the control and display interface allows the operating personnel to set test parameters, starts test and views the result, and its working principle is based on generating the pulse current of simulated lightning, is transmitted to lightning arrester discharge counter through impulse current generator. When the counter detects the impulse current, the discharge event will be recorded;Such as the lightning arrester discharge counter tester disclosed in the authorized announcement no. CN220490922U, including the shell, the shell one end is discharge end, is equipped with input, ground end and charging interface on the shell;The inside of shell is equipped with the charging module, battery, inverter, voltage booster, rectifier filter, capacitor and control module connected in sequence;The input and ground end are used to connect with insulation resistance meter, and high voltage is generated by the hand-cranking power generation function of insulation resistance meter for emergency power supply. The interface is reserved in the internal circuit, is connected with insulation resistance meter after automatic shutdown, and high voltage is generated by the hand-cranking power generation function of insulation resistance meter. The above technical scheme mainly utilizes the discharge end of the upper end of the instrument to contact the lightning arrester in the use process, and the discharge end is needle column structure, so the user needs to hold the tester and continuously keep the discharge end of the tester in contact with the lightning arrester, and the hand-held operation is easy to cause the unstable contact between the discharge end and the lightning arrester, which affects the accuracy of test data. If the contact is not close or there is jitter, it may cause unstable discharge signal, thereby affecting the normal response of lightning arrester discharge counter. This not only makes the test result inaccurate, but also may mislead fault diagnosis, resulting in wrong maintenance decision. UTILITY MODEL CONTENT

[0003] The utility model discloses a lightning arrester discharge counter tester, install the wire on the discharge needle of the tester top, and the wire is connected to the arc jaw, when two arc jaws are clamped on the lightning arrester, utilize the rotary self -lock structure, the gear wheel drive structure makes two arc jaws clamping on the lightning arrester, at this moment, the tester simulates the pulse current of lightning and passes through the discharge needle, wire and arc jaw and is transmitted to the lightning rod, without staff long -time handheld tester, to solve the problem in the background art.

[0004] To realize above -mentioned purpose, the utility model provides the following technical scheme: lightning arrester discharge counter tester, including tester body and the discharge needle of tester body top both sides installation, and the discharge needle away from the one end of tester body installs the wire, the top of tester body is fixed with right angle axle frame, and both sides of right angle axle frame surface are rotatably installed with the main shaft, the one end fixed with arc jaw of main shaft surface, the bottom of arc jaw and the one end of wire are connected with each other, the gear wheel drive structure for keeping synchronous reverse state is installed between two arc jaws, the back of right angle axle frame is installed with the rotary self -lock structure for driving one main shaft rotation.

[0005] Preferably, the one end of the tester body surface is fixed with an anti-skid handle.

[0006] Preferably, the two arc jaw ends are fixed with copper buckles on the adjacent outer wall surfaces.

[0007] Preferably, the rotary self-locking structure includes a transmission box fixed to the back of the right-angle axle frame, a worm gear transmission structure arranged inside the transmission box, and a driving shaft and a driven shaft rotatably installed on both sides of the transmission box. The central axis extension lines of the driving shaft and the driven shaft are perpendicular to each other. One end of the driven shaft is fixedly connected to one end of the main shaft through a shaft coupling.

[0008] Preferably, the worm gear transmission structure includes a worm fixed to one end of the driving shaft and a worm wheel fixed to one end of the surface of the driven shaft. The worm wheel and the worm are meshed with each other.

[0009] Preferably, the gear wheel transmission structure includes a half gear integrally formed on one side of the back of the arc jaw. The two half gears are meshed with each other. The central axis of the half gear and the central axis of the main shaft coincide with each other.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the lightning arrester discharge counter tester through the structure of the gear wheel transmission structure, the rotary self-locking structure, the arc claw, the discharge needle and the like, can ensure that the arc claw and the lightning arrester always keep good contact, avoid the influence of human factors on the test precision, make the test data more accurate and reliable, and compared with the traditional handheld operation, the tester can also be installed and fixed through the claw and the lightning arrester, the operator only needs to place the tester near the lightning arrester, and the device can be locked and tested, greatly improving the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the front view structural schematic diagram of the utility model;

[0012] Figure 2 It is the front view structural schematic diagram of the utility model; Figure One ;

[0013] Figure 3 It is the front view structural schematic diagram of the utility model;

[0014] Figure 4 It is the front view structural schematic diagram of the utility model; Figure Two ;

[0015] Figure 5 It is the front view structural schematic diagram of the utility model; Figure Three .

[0016] In the drawing: 1, tester body; 101, anti-skid handle; 2, right-angle shaft support; 3, discharge needle; 4, wire; 5, main shaft; 6, arc claw; 7, copper buckle; 8, gear wheel transmission structure; 801, half gear; 9, rotary self-locking structure; 901, transmission box; 902, driving shaft; 903, driven shaft. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0018] Please refer to Figures 1-5 , the utility model provides an embodiment: lightning arrester discharge counter tester, including tester body 1 and the discharge needle 3 installed on the both sides of tester body 1 top, and the discharge needle 3 is installed with wire 4 away from one end of tester body 1, and one end of tester body 1 surface is fixed with anti-skid handle 101;

[0019] The top end of the tester body 1 is fixed with a right-angle shaft support 2, and the two sides of the surface of the right-angle shaft support 2 are rotatably installed with main shafts 5, one end of the surface of the main shaft 5 is fixed with arc-shaped clamping claws 6, the bottom end of the arc-shaped clamping claw 6 is connected with one end of the lead wire 4, the two arc-shaped clamping claws 6 are installed with a residual gear transmission structure 8 for keeping the synchronous reverse state, the back surface of the right-angle shaft support 2 is installed with a rotary self-locking structure 9 for driving one of the main shafts 5 to rotate;

[0020] The inside of the tester body 1 is equipped with a discharge counter and a data recording module, each time the simulated lightning pulse current passes through the lightning arrester and triggers a discharge event, the counter will increase the discharge times, the whole test process can be continuously carried out, and the tester will automatically record and summarize the data according to the set test period or discharge times;

[0021] When the test is completed, the staff can manually unlock the rotary self-locking structure 9 and the residual gear transmission structure 8, at this time, the two arc-shaped clamping claws 6 can be loosened, and the operator can take the tester body 1 from the lightning arrester to perform the test work of the next lightning arrester;

[0022] The copper buckles 7 are fixed on the approaching outer wall surfaces of the two arc-shaped clamping claw ends, the copper buckles 7 have low resistance, and the end part of the arc-shaped clamping claw 6 can significantly improve the conductivity of the contact point itself and the tested lightning arrester, so as to ensure that the current flows smoothly during the test process, and reduce the current loss caused by poor contact or high contact resistance;

[0023] The rotary self-locking structure 9 includes a transmission box 901 fixed on the back surface of the right-angle shaft support 2, a worm gear transmission structure arranged in the transmission box 901, and driving shafts 902 and driven shafts 903 rotatably installed on both sides of the transmission box 901, the middle axis lines of the driving shafts 902 and the driven shafts 903 are perpendicular to each other, and one end of the driven shaft 903 is fixedly connected with one end of one of the main shafts 5 through a shaft coupling;

[0024] The residual gear transmission structure 8 includes half gears 801 integrally formed on one side of the back surface of the arc-shaped clamping claw 6, the two half gears 801 are meshed with each other, the middle axis line of the half gear 801 and the middle axis line of the main shaft 5 coincide with each other, the staff manually rotates the driving shaft 902, the rotary power of the driving shaft 902 is transmitted to the driven shaft 903 through the worm gear transmission structure in the transmission box 901, the driven shaft 903 drives one of the main shafts 5 to rotate, the arc-shaped clamping claw 6 is deflected by the main shaft 5, and the other arc-shaped clamping claw 6 is synchronously and reversely deflected under the drive of the half gear 801, that is, the two arc-shaped clamping claws 6 approach each other until the arc-shaped clamping claw 6 is tightly connected with the test interface of the lightning arrester;

[0025] The worm gear transmission structure includes a worm fixed at one end of the driving shaft 902 and a worm gear fixed at one end of the surface of the driven shaft 903, the worm gear and the worm are engaged with each other, the worm gear transmission structure in the transmission box 901 has a self-locking property, which can lock the arc-shaped clamping jaw 6 in place, ensure the close connection of the arc-shaped clamping jaw 6 and the lightning arrester interface, and avoid the problems of poor contact or insufficient locking.

[0026] In use, first, the operator places the tester body 1 at the test position of the lightning arrester, ensures that the contact part of the arc-shaped clamping jaw 6 of the tester body 1 is aligned with the connection end or test interface of the lightning arrester, and prepares to test the lightning arrester by simulating lightning pulse current through the tester body 1, connects the discharge needle 3 and the arc-shaped clamping jaw 6 through the wire 4, the discharge needle 3 serves as the source of lightning pulse, and the current is transmitted to the arc-shaped clamping jaw 6 through the wire 4, and the wire 4 functions to stably and reliably conduct the simulated lightning current generated by the discharge needle 3 to the test interface of the lightning arrester through the arc-shaped clamping jaw 6, at this time, the discharge needle 3, the arc-shaped clamping jaw 6, the wire 4 and the lightning arrester test interface form a current transmission path through electrical connection, ensuring that the pulse current can smoothly flow through the test path to the lightning arrester, then the operator manually operates the rotary self-locking structure 9, the two arc-shaped clamping jaws 6 are automatically locked by the rotary self-locking structure 9 and the gear transmission structure 8, and firmly clamp the test interface of the lightning arrester, under the action of the rotary self-locking structure 9, the two arc-shaped clamping jaws 6 will tighten the lightning arrester with the rotary action, which not only enhances the contact stability, but also avoids the problems of poor contact or insufficient locking that may occur during traditional handheld testing, ensures the contact stability during testing, and ensures that the simulated lightning pulse current can be accurately transmitted to the lightning arrester, when the arc-shaped clamping jaw 6 is firmly connected with the lightning arrester, the tester body 1 activates the discharge needle 3 through the control circuit, and starts to simulate the generation of lightning pulse current, the discharge needle 3 will simulate the instantaneous high-voltage pulse of lightning discharge, and transmit it to the arc-shaped clamping jaw 6 through the wire 4, the arc-shaped clamping jaw 6 serves as the receiving point of the current, ensuring that the current is stably transmitted to the lightning arrester, and the tester body 1 increases the discharge count in the internal memory every time the current passes through the lightning arrester, which can continuously monitor the discharge condition of the lightning arrester and help evaluate whether its performance meets the standard requirements.

Claims

1. A test instrument for a surge arrester discharge counter, characterized by: The utility model provides a test appearance body (1) and the discharge needle (3) of test appearance body (1) top both sides installation, and the discharge needle (3) is installed with the wire (4) far from the one end of test appearance body (1), the top of test appearance body (1) is fixed with right angle axle frame (2), and the both sides of right angle axle frame (2) surface are rotatably installed with main shaft (5), the one end of main shaft (5) surface is fixed with arc jaw (6), and the bottom of arc jaw (6) is connected with the one end of wire (4), and the gear wheel drive structure (8) for keeping synchronous reversal state is installed between two arc jaw (6), the back of right angle axle frame (2) is installed with the rotation self -locking structure (9) for driving one main shaft (5) rotation.

2. The arrester discharge counter tester of claim 1, wherein: The surface of the test appearance body (1) is fixed with an anti-skid handle (101) at one end.

3. The arrester discharge counter tester of claim 1, wherein: The approaching outer wall surface of the claw end of the two arc jaw (6) is fixed with a copper buckle (7).

4. The surge arrester discharge counter tester of claim 1, wherein: The rotation self -locking structure (9) includes a transmission box (901) fixed on the back of the right angle axle frame (2), a worm gear transmission structure arranged inside the transmission box (901), and a driving shaft (902) and a driven shaft (903) rotatably installed on both sides of the transmission box (901). The central axis extension lines of the driving shaft (902) and the driven shaft (903) are perpendicular to each other. One end of the driven shaft (903) is fixedly connected with one end of the main shaft (5) through a shaft coupling.

5. The surge arrester discharge counter tester of claim 4, wherein: The worm gear transmission structure includes a worm fixed on one end of the driving shaft (902) and a worm wheel fixed on one end of the surface of the driven shaft (903). The worm wheel and the worm are engaged with each other.

6. The surge arrester discharge counter tester of claim 4, wherein: The residual gear transmission structure (8) includes a half gear (801) integrally formed on one side of the back of the arc jaw (6). The two half gears (801) are engaged with each other. The central axis of the half gear (801) and the central axis of the main shaft (5) coincide with each other.

Images