Withstand voltage test device for insulation safety appliance

Abstract

The utility model discloses a withstand voltage test device for an insulation safety appliance, and relates to the technical field of withstand voltage tests for electric power safety appliances, the withstand voltage test device comprises a console, a transformer and a test bench, the middle of the test bench is provided with a water injection tank, the two sides of the top of the water injection tank are fixedly provided with electric telescopic rods, and the output end of each electric telescopic rod is fixedly provided with a support. Connecting frames are fixedly installed at the two ends of the bottom of the support, connecting rods are fixedly installed at the bottoms of the connecting frames, first liquid level sensors are fixedly installed at the bottoms of the connecting rods, trips are installed at the bottom of the support in an array mode and connected with iron chains through connectors, the iron chains penetrate through the connecting frames, and fixing rods are fixedly connected to the two sides of the penetrating positions of the iron chains at the bottoms of the connecting frames. According to the safety appliance fixing device, the fixing rod is arranged, the clamping block fixedly connected to the bottom of the fixing rod is used for clamping and fixing a safety appliance, the stability of the safety appliance is kept, and meanwhile one end of an iron chain can enter the safety appliance conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of withstand voltage test of electric power safety appliances, in particular to a withstand voltage test device for insulating safety appliances. Background Technique

[0002] Electric power safety appliances include insulating boots, insulating gloves, safety helmets, etc. The preventive test of electric power safety appliances refers to the test for discovering potential hazards of electric power safety appliances and preventing equipment or personal accidents, which is a responsibility and guarantee for the life safety of electric power construction personnel, and its importance is self-evident.

[0003] The Chinese utility model patent with the patent application number 202020393326.6 provides an automatic water injection withstand voltage test system applicable to insulating boots, gloves and safety helmets, which can test a complete set of electric power safety appliances including insulating boots, insulating gloves and safety helmets, and can simultaneously conduct withstand voltage tests on multiple groups of insulating boots, insulating gloves or safety helmets. It can automatically inject water into the insulating gloves, and the setting of the water injection device will not interfere with the test, reducing the labor intensity of the test personnel and effectively improving the test detection efficiency.

[0004] However, it is found in the use process of the above equipment that during the test detection, the safety appliances to be detected need to be placed on the placement rack. The safety appliances placed on the placement rack are prone to shaking or differences due to placement, resulting in the iron chain being unable to accurately enter the interior of the safety appliances and contact the safety appliances during detection, thus leading to inaccurate detection results. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a withstand voltage test device for insulating safety appliances, which solves the problem that the safety appliances placed on the placement rack are prone to shaking or differences due to placement, resulting in the iron chain being unable to accurately enter the interior of the safety appliances and contact the safety appliances during detection, thus leading to inaccurate detection results as mentioned in the background technique.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A withstand voltage test device for insulating safety appliances, including a control console, a transformer and a test bench. A water injection groove is opened in the middle of the test bench. Electric telescopic rods are fixedly installed on both sides of the top of the water injection groove. A bracket is fixedly installed at the output end of the electric telescopic rod. Connecting frames are fixedly installed at both ends of the bottom of the bracket. A connecting rod is fixedly installed at the bottom of the connecting frame. A liquid level sensor 1 is fixedly installed at the bottom of the connecting rod. Releases are arranged in an array at the bottom of the bracket. The releases are connected to a connector. The connector is fixed at one end of an iron chain. The iron chain passes through the connecting frame. Fixed rods are fixedly connected to both sides of the connection part of the iron chain and the connecting frame. Clamping blocks are rotatably connected to the bottoms of the fixed rods.

[0007] Preferably, lifting rods are fixedly installed at both ends of the bottom of the bracket, and the lifting rods are arranged between the electric telescopic rod and the connecting frame.

[0008] Preferably, a water injection pipe is fixedly installed on one inner wall of the water injection tank. The water injection pipe is close to the top end of the water injection tank. A water inlet pipe is installed on the top of the test bench, and one end of the water inlet pipe is close to one end of the iron chain.

[0009] Preferably, a second liquid level sensor is installed on one side of the water injection pipe, and the second liquid level sensor is horizontal with the water injection pipe.

[0010] Preferably, a placement rack is installed inside the water injection tank. A plurality of baffle plates are fixedly connected in an array on the top of the placement rack. Limiting plates are fixed at the bottoms of both ends of the baffle plates. A sponge is placed between two adjacent baffle plates.

[0011] Preferably, a third liquid level sensor is installed on one inner wall of the water injection tank. The third liquid level sensor is arranged above the placement rack, and the third liquid level sensor is horizontal with the sponge.

[0012] The utility model provides a withstand voltage test device for insulating safety appliances, which has the following beneficial effects:

[0013] (1) By setting the fixed rod in the utility model, the clamping block fixedly connected to the bottom of the fixed rod is used to clamp and fix the safety appliance. While keeping the safety appliance stable, it is convenient for one end of the iron chain to enter the inside of the safety appliance.

[0014] (2) By setting a plurality of liquid level sensors in the utility model, the plurality of liquid level sensors can monitor the liquid level of the test liquid from different positions, improving the liquid injection accuracy.

[0015] Therefore, the problem that the safety appliance placed on the placement rack is prone to shaking or differences due to placement, resulting in the iron chain being unable to accurately enter the inside of the safety appliance and contact the safety appliance during detection, and further resulting in inaccurate detection results, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram showing the overall structure of the utility model;

[0017] Figure 2 is the utility model Figure 1 schematic diagram showing the internal structure of the test bench in;

[0018] Figure 3 is the utility model Figure 1 schematic diagram showing the structure of the bracket in;

[0019] Figure 4 For the present utility model Figure 3 is an enlarged schematic view of part A in the present utility model.

[0020] In the figure, 1 is a control console; 2 is a transformer; 3 is a test bench; 31 is a water injection tank; 32 is a placement rack; 33 is a liquid level sensor III; 34 is a baffle; 341 is a limit plate; 35 is a liquid level sensor II; 4 is a water inlet pipe; 5 is a water injection pipe; 6 is an electric telescopic rod; 7 is a lifting rod; 71 is a connecting frame; 72 is a fixing rod; 73 is a clamping block; 74 is a bracket; 8 is a release; 9 is an iron chain; 91 is a connector; 10 is a connecting rod; 101 is a liquid level sensor I; 11 is a sponge. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1:

[0023] Please refer to Figures 1 - 4 , a withstand voltage test device for insulating safety appliances, including a control console 1, a transformer 2 and a test bench 3. A water injection tank 31 is opened in the middle of the test bench 3. Electric telescopic rods 6 are fixedly installed on both sides of the top of the water injection tank 31. A bracket 74 is fixedly installed at the output end of the electric telescopic rod 6. Connecting frames 71 are fixedly installed at both ends of the bottom of the bracket 74. A connecting rod 10 is fixedly installed at the bottom of the connecting frame 71. A liquid level sensor I 101 is fixedly installed at the bottom of the connecting rod 10. Releases 8 are arrayedly installed at the bottom of the bracket 74. The release 8 is connected to the connector 91. The connector 91 is fixed at one end of the iron chain 9. The iron chain 9 passes through the connecting frame 71. Fixed rods 72 are fixedly connected to both sides of the connection part of the iron chain 9 and the connecting frame 71. A clamping block 73 is rotatably connected to the bottom of the fixed rod 72;

[0024] Lifting rods 7 are fixedly installed at both ends of the bottom of the bracket 74. The lifting rods 7 are arranged between the electric telescopic rod 6 and the connecting frame 71.

[0025] Specifically, this withstand voltage test device can simultaneously conduct power frequency withstand voltage tests on eight safety appliances, measure the leakage current of each test sample, control the lifting of the bracket 74 through the telescopic movement of the electric telescopic rod 6, thereby driving the connecting frame 71 to lift. The clamping block 73 provided at the bottom of the connecting frame 71 can be used to clamp the safety appliances, enabling the installation appliances to be fixed below the iron chain 9. At the same time, when the user installs the safety appliances, the iron chain 9 and the liquid level sensor 101 are arranged inside the safety appliances. The connecting rod 10 includes a connecting rod, an extension rod, and a limit block. Multiple limit holes are provided on the extension rod, and the limit block is arranged in different limit holes, thereby realizing the telescopic movement of the connecting rod 10, and further controlling the height where the liquid level sensor 101 is located to adapt to different safety appliances;

[0026] A leakage current acquisition box is installed inside the bracket 74. Each individual leakage current acquisition box corresponds to an individual iron chain 9, which can realize on-site sampling of the leakage current, wireless transmission to the control host, and display using a high-brightness LED display module. All the tripping devices 8 adopt an electromagnet and spring structure. When any one path breaks down or exceeds the set leakage current value, the safety appliance on this path will quickly break away from the test without affecting the testing of other test samples. When the iron chain 9 falls off, the connector 91 at one end of the iron chain 9 is restricted by the connecting frame 71 and stays on the connecting frame 71, preventing the iron chain 9 from falling into the safety appliance, which is not convenient for the staff to take it out.

[0027] Embodiment 2:

[0028] To achieve the withstand voltage detection of safety appliances, please refer to Figures 1 - 4 On the basis of Embodiment 1, a water injection pipe 5 is fixedly installed on one inner wall of the water injection tank 31. The water injection pipe 5 is close to the top of the water injection tank 31. A water inlet pipe 4 is installed on the top of the test bench 3, and one end of the water inlet pipe 4 is close to one end of the iron chain 9;

[0029] A liquid level sensor 35 is installed on one side of the water injection pipe 5, and the liquid level sensor 35 is horizontal with the water injection pipe 5;

[0030] A placement rack 32 is installed inside the water injection tank 31. A plurality of baffle plates 34 are fixedly connected in an array on the top of the placement rack 32. Limit plates 341 are fixed at the bottom ends of both ends of the baffle plates 34, and a sponge 11 is placed between two adjacent baffle plates 34;

[0031] A liquid level sensor 33 is installed on one inner wall of the water injection tank 31. The liquid level sensor 33 is arranged above the placement rack 32, and the liquid level sensor 33 is horizontal with the sponge 11.

[0032] Specifically, during the test, the water injection pipe 5 is connected to an external water tank, enabling water injection in the water injection tank 31. The second liquid level sensor 35 can detect the water level in the water injection tank 31 to prevent excessive water injection through the water injection pipe 5, which may cause some water to overflow from the water injection tank 31.

[0033] When performing a withstand voltage test on safety appliances, the clamping block 73 is used to hold the safety appliances. The electric telescopic rod 6 contracts to control the bracket 74 to drive the connecting frame 71 to descend, causing the connecting frame 71 to control the descent of the safety appliances.

[0034] When performing a withstand voltage test on an insulating board or insulating pad, etc., the sponge 11 is placed on the placement rack 32, and the limiting plate 341 is used to restrict the sponge 11 to prevent it from moving. As needed, the water injection level is controlled until the sponge 11 is filled with water. The third liquid level sensor 33, which is at the same level as the sponge 11, is used to detect the water injection level to avoid the water injection level exceeding the height of the sponge 11. The connecting frame 71 descends to control one end of the insulating board or insulating pad to contact the sponge 11, and at the same time, the iron chain 9 is in contact with the other end of the insulating board or insulating pad to prevent the insulating board from getting overly wet and difficult to dry, and to be able to detect the overall insulation effect of the insulating board or insulating pad.

[0035] When performing a withstand voltage test on insulating shoes or safety helmets, etc., the water injection pipe 4 is used to inject water into the interior of the insulating shoes or safety helmets. The iron chain 9 is arranged inside the insulating shoes or safety helmets. At the same time, the water injection level in the water injection tank 31 is controlled to be lower than the height of the first liquid level sensor 101 to prevent the water injection in the water injection tank 31 from entering the insulating shoes or safety helmets and being connected to the water injection inside them, which may lead to inaccurate withstand voltage test results.

[0036] On one side of the test bench 3, a water injection device for controlling water injection is installed. The control console 1 is provided with a control component. Both the water injection device and the control device use a touch screen with large - screen Chinese display, which can display a large amount of information. Parameters such as test voltage, low - voltage output current, eight - way high - voltage leakage current, timing time, etc., as well as Chinese prompt content, are simultaneously displayed on one screen.

[0037] The control device uses a high - fineness stepping motor to control the voltage regulator during the voltage - boosting process, and conducts the withstand voltage test automatically. After the test starts, the instrument automatically closes the switch and boosts the voltage automatically at the national standard - required speed. When it reaches the predetermined voltage, it starts timing, maintains the test voltage, stops timing, automatically reduces the voltage, and automatically cuts off the power after reaching zero, indicating the end of the test. At the same time, it displays the leakage current of each test item and automatically saves the test results. This withstand voltage detection equipment can also detect other safety appliances.

[0038] Working principle: When performing the withstand voltage test, the safety equipment is clamped and fixed by the clamping block 73. According to the needs of different safety equipment, the telescopic length of the connecting rod 10 is controlled to adjust the height of the first liquid level sensor 101. After the safety equipment is fixed, one end of the iron chain 9 is brought into contact with the safety equipment. Then, the electric telescopic rod 6 is contracted to control the bracket 74 to descend. The lifting rod 7 is used to guide the movement of the bracket 74 to make the movement of the bracket 74 more stable. According to the needs of different safety equipment, the height of the injected water is adjusted. When the sponge 11 needs to be used, the liquid level sensor three 33 is used to detect the liquid level height. When the sponge 11 does not need to be used, the first liquid level sensor 101 is used to detect the liquid level. When the height of the first liquid level sensor 101 is higher than the water injection tank 31, the liquid level sensor two 35 is used to detect the liquid level height at the same time to prevent the injected water from overflowing from the water injection tank 31. During the test, when the leakage current acquisition box corresponding to the single-channel safety equipment detects breakdown or exceeds the set leakage current value, the trip 8 on this channel of the safety equipment disconnects the connection with the connector 91, causing this channel of the safety equipment to quickly break away from the test without affecting the test of other samples.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0040] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A withstand voltage test device for insulating safety appliances, comprising a control console (1), a transformer (2) and a test bench (3), characterized in that: A water injection groove (31) is formed in the middle of the test bench (3). Electric telescopic rods (6) are fixedly installed on both sides of the top of the water injection groove (31). A bracket (74) is fixedly installed at the output end of the electric telescopic rod (6). Connecting frames (71) are fixedly installed at both ends of the bottom of the bracket (74). A connecting rod (10) is fixedly installed at the bottom of the connecting frame (71). A first liquid level sensor (101) is fixedly installed at the bottom of the connecting rod (10). Release catches (8) are arranged in an array at the bottom of the bracket (74). The release catches (8) are connected to a connector (91). The connector (91) is fixed at one end of an iron chain (9). The iron chain (9) passes through the connecting frame (71). Fixed rods (72) are fixedly connected to both sides of the connection part of the iron chain (9) and the connecting frame (71). Clamping blocks (73) are rotatably connected to the bottoms of the fixed rods (72).

2. The voltage withstand test device for an insulating safety appliance according to claim 1, characterized in that: Lifting rods (7) are fixedly installed at both ends of the bottom of the bracket (74). The lifting rods (7) are arranged between the electric telescopic rod (6) and the connecting frame (71).

3. The voltage withstand test device for an insulating safety appliance according to claim 1, wherein: A water injection pipe (5) is fixedly installed on one inner wall of the water injection groove (31). The water injection pipe (5) is close to the top end of the water injection groove (31). A water inlet pipe (4) is installed on the top of the test bench (3). One end of the water inlet pipe (4) is close to one end of the iron chain (9).

4. The withstand voltage test device for an insulating safety appliance according to claim 3, characterized in that: A second liquid level sensor (35) is installed on one side of the water injection pipe (5). The second liquid level sensor (35) is horizontal with the water injection pipe (5).

5. The voltage withstand test device for an insulating safety appliance according to claim 1, wherein: A placement rack (32) is installed inside the water injection groove (31). A plurality of baffles (34) are fixedly connected in an array at the top of the placement rack (32). Limiting plates (341) are fixed at the bottoms of both ends of the baffle (34). A sponge (11) is placed between two adjacent baffles (34).

6. The voltage withstand test device for an insulating safety appliance according to claim 5, wherein: A third liquid level sensor (33) is installed on one inner wall of one end of the water injection groove (31). The third liquid level sensor (33) is arranged above the placement rack (32). The third liquid level sensor (33) is horizontal with the sponge (11).

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