CN217953810U - Two-in-one device for detecting air tightness and safety valve action of valve-controlled storage battery - Google Patents

Abstract

The utility model relates to a two-in-one device for detecting the air tightness of a valve-controlled battery and the action of a safety valve. An air compressor is connected through an air supply pipeline, and the other end of the control valve is connected to a three-way pipe through an air supply pipeline. One side of the three-way pipe is connected to a valve-regulated battery through an air supply pipeline, and the other end is connected to a pressure gauge. One end is connected to a U-shaped mercury manometer through an air supply pipeline; a first cut-off valve is arranged between the control valve and the three-way pipe, and a second cut-off valve is arranged between the pressure gauge and the U-shaped mercury manometer. The utility model uses one detection pipeline, which is suitable for valve-controlled storage battery air tightness detection and safety valve action detection, which saves detection cost and improves detection efficiency.

Description

A two-in-one device for valve-controlled battery air tightness and safety valve action detection

technical field

The utility model relates to the technical field of detection of a valve-controlled storage battery, in particular to a two-in-one device for detecting the air tightness of a valve-controlled storage battery and the action of a safety valve.

Background technique

The valve-regulated battery needs to be tested for air tightness during the production process, so as to ensure the quality of the valve-regulated battery. At the same time, the safety valve action command needs to be tested. These two tests need to be carried out in strict accordance with the fifth part of the "JB12666-2016" document , Equipped with special detection equipment for this related detection.

Existing detection equipment is expensive and has a single function. According to the test items, the above two tests have some similarities. Therefore, there is an urgent need for a device with the functions of air tightness test and safety valve action command test, which saves test costs and is easy to operate without replacing the test equipment.

Contents of the invention

In order to solve the problem of single function and high cost of the existing detection equipment, the utility model provides a two-in-one device for detecting the air tightness of the valve-controlled battery and the action of the safety valve, using a detection pipeline for the detection of the valve-regulated battery Air tightness testing and safety valve action testing save testing costs and improve testing efficiency.

In order to achieve the above object, the technical solution of the utility model is:

A two-in-one device for detecting the air tightness of a valve-regulated battery and the action of a safety valve, including a cabinet, a valve-regulated battery and a pressure gauge, a detection pipeline is arranged between the valve-regulated battery and the pressure gauge, and the The detection pipeline includes a control valve, a three-way pipe and an air supply pipe. One end of the control valve is connected to an air compressor through the air supply pipe, and the other end of the control valve is connected to the three-way pipe through the air supply pipe. One side of the three-way pipe Connect the valve-regulated battery through the gas supply pipeline, connect the other end to the pressure gauge, and connect the other end of the pressure gauge to the U-shaped mercury pressure gauge through the gas supply pipeline;

A first cut-off valve is arranged between the control valve and the three-way pipe, and a second cut-off valve is arranged between the pressure gauge and the U-shaped mercury pressure gauge.

Set up the detection pipeline including the control valve, tee pipe and air supply pipe. First, the control valve is connected to the air compressor through the stop valve, and the shell of the valve-regulated battery and the pressure gauge are connected through the tee pipe. During the performance test, set the air pressure of the air supply pipeline through the control valve. When the gas is added to the shell of the valve-regulated battery, observe the pressure indication number. If the pressure indication number remains unchanged for a period of time, it proves that the air-tightness of the valve-regulated battery is qualified. When performing safety valve action detection, set the air pressure of the air supply pipeline through the control valve to refill the shell of the valve-regulated battery, and perform safety valve action detection according to the steps specified in "JB12666-2016, 5.3.16.2". Under the premise, the two detections are integrated on one device, which reduces the detection cost and improves the detection efficiency.

Further, the valve-regulated battery includes a casing, the casing is a hollow square structure, and a circular air inlet hole is opened near the upper end of the casing, and a sealing rubber ring is provided on the ring surface of the air inlet hole for supplying The air pipe is connected to the casing of the valve-regulated battery through the air inlet.

In order to avoid detection errors caused by air leakage during detection, a sealing rubber ring is installed at the position of the air inlet. The sealing rubber ring is an I-shaped wheel-shaped structure. The diameter ends are respectively arranged on both sides of the side wall of the casing for the position limitation of the sealing rubber ring.

Further, the valve-regulated battery is provided with a water tank, the water tank is a square structure with a hollow interior and an open upper end, and the height of the water tank is greater than that of the valve-regulated battery.

In order to facilitate the observation of the inspection process, a water tank is provided. During the inspection, the water tank is filled with water. According to the provisions of "JB12666-2016, 5.3.16.1", the distance between the water surface in the water tank and the upper end surface of the valve-regulated battery is less than 10mm. The presence or absence of air bubbles can clearly observe the ventilation state of the valve-regulated battery.

Further, the cabinet body includes a cabinet door and a cabinet body, the cabinet body is a square structure, the cabinet body and the cabinet door are hinged, the cabinet door is a square plate, and a long window is opened on the cabinet door, and the cabinet body is provided with A concave bracket, one section of the two vertical sections of the bracket is fixed to the side plate of the cabinet body, and the other section is fixed to the U-shaped mercury manometer;

The pressure gauge, control valve and tee pipe are fixed slightly to the side plate of the cabinet body through positioning.

In order to facilitate the operation of the staff and avoid back-and-forth assembly, the cabinet is set up, and the detection pipeline is installed inside the cabinet. At the same time, the instruments in the detection pipeline are also protected to ensure the detection accuracy.

Further, a second detection pipeline is also provided in the cabinet, and the second detection pipeline has the same structure as the detection pipeline.

Set up two sets of detection pipelines with the same structure in the cabinet for re-inspection and backup.

Through the above technical scheme, the beneficial effects of the utility model are:

1. The utility model is equipped with a detection pipeline, and the detection pipeline includes a control valve, a tee pipe and an air supply pipeline. One end of the control valve is connected to an air compressor through the air supply pipeline, and the other end of the control valve is connected through the air supply pipeline. Connect a three-way pipe, one side of the three-way pipe is connected to a valve-controlled battery through an air supply pipeline, and the other end is connected to a pressure gauge, and the other end of the pressure gauge is connected to a U-shaped mercury manometer through an air supply pipeline; the control valve and A first cut-off valve is arranged between the three-way pipes, and a second cut-off valve is arranged between the pressure gauge and the U-shaped mercury pressure gauge.

The structure of the detection pipeline is simple. The connection between the air compressor and the valve-regulated battery is realized through the tee pipe, the air supply pipe, the first stop valve and the second stop valve, and the detection line is changed through the first stop valve and the second stop valve. The ventilation state realizes the air tightness detection of the valve-regulated battery and the detection of the safety valve action. The device structure is simple and easy to operate, which reduces the detection cost.

Description of drawings

Figure 1 is one of the structural schematic diagrams of a two-in-one device for valve-controlled battery air tightness and safety valve action detection in the present invention;

Fig. 2 is the second structural schematic diagram of a two-in-one device for valve-controlled battery air tightness and safety valve action detection of the utility model;

Fig. 3 is the third structural diagram of a two-in-one device for valve-controlled battery air tightness and safety valve action detection of the utility model;

Fig. 4 is a schematic diagram of the air circuit of a valve-controlled storage battery airtightness and safety valve action detection two-in-one device of the present invention.

The numbers in the drawings are: 1 is the cabinet, 2 is the valve-regulated battery, 3 is the pressure gauge, 4 is the control valve, 5 is the tee pipe, 6 is the air supply pipeline, 7 is the air compressor, 8 is U-shaped Mercury pressure gauge, 9 is the first shut-off valve, 10 is the second shut-off valve, 11 is the air inlet, 12 is the water tank, and 13 is the support.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

Example 1

As shown in Figures 1 to 4, a valve-regulated battery airtightness and safety valve action detection two-in-one device includes a cabinet 1, a valve-regulated battery 2 and a pressure gauge 3, and the valve-regulated battery 2 A detection pipeline is provided between the pressure gauge 3, and the detection pipeline includes a control valve 4, a three-way pipe 5 and an air supply pipeline 6, and one end of the control valve 4 is connected to an air compressor 7 through the air supply pipeline 6, The other end of the control valve 4 is connected to the tee pipe 5 through the air supply pipeline 6, one side of the tee pipe 5 is connected to the valve-regulated battery 2 through the air supply pipeline 6, and the other end is connected to the pressure gauge 3, and the other end of the pressure gauge 3 is passed The gas supply pipeline is connected with a U-shaped mercury column manometer 8;

A first stop valve 9 is provided between the control valve 4 and the three-way pipe 5 , and a second stop valve 10 is provided between the pressure gauge 3 and the U-shaped mercury pressure gauge 8 .

Preferably, as shown in Figure 3, the valve-regulated battery 2 includes a housing, the housing is a hollow square structure, and a circular air inlet 11 is provided near the upper end of the housing, and the ring of the air inlet 11 is The surface is provided with a sealing rubber ring, and the air supply pipe 6 is connected to the shell of the valve-regulated battery 2 through the air inlet 11 .

The sealing rubber ring is an I-shaped wheel-shaped structure, the middle part of the sealing rubber ring is set in the hole of the air inlet, and the two large-diameter ends of the sealing rubber ring are respectively arranged on both sides of the side wall of the housing for the sealing rubber ring to limit.

As shown in FIG. 3 , the valve-regulated battery 2 is provided with a water tank 12 . The water tank 12 is a hollow square structure with an open upper end. The height of the water tank 12 is greater than that of the valve-regulated battery 2 .

Combined with Figures 1 to 4, the air-tightness detection of the valve-regulated battery and the action detection of the safety valve are explained respectively:

Valve-regulated battery air tightness test:

In conjunction with Figure 4, during operation, the air supply pipeline 6 is first connected to the air compressor 7, the valve-regulated battery 2 and the pressure gauge 3 through the tee pipe 5. After the three are connected, the valve port of the control valve 4 is adjusted so that the air supply pipeline 6 The air pressure in the tank is maintained at 20kpa. At this time, the first shut-off valve 9 and the second shut-off valve 10 are in the closed state. Put the valve-controlled battery 2 into the water tank 12, fill the tank 12 with water, and the water level of the tank 12 is higher than that of the valve-controlled battery. The distance between the upper end surface of the battery 2 and the water surface of the water tank 12 is less than 10mm from the upper end surface of the valve-regulated battery 2;

After the air compressor 7 is powered on, the air flow passes through the control valve 4 to the air supply pipeline 6. The air pressure is 20kpa, the first stop valve 9 is opened, and then 20kpa of gas is charged into the valve-controlled battery 2 through the three-way pipe 5, and the pressure gauge The air pressure at the 3 positions is 20kpa. Through the pressure gauge 3, it can be seen that the detection value of the air supply pipeline 6 is 20kpa. Close the first stop valve 9. At this time, there is only a gap between the valve-regulated battery 2 and the pressure gauge 3 on the detection pipeline. If there is no air bubble in the water tank 12 within 3 to 5 seconds, and the detection value of the pressure gauge 3 is still 20kpa, it means that the airtightness of the valve-regulated battery 2 is qualified.

Safety valve action detection:

The detection of the safety valve action is numerical detection. By simulating the working state of the safety valve, the scale of the U-shaped mercury manometer 8 when the safety valve of the valve-controlled battery 2 is opened and the U-shaped mercury manometer 8 when the safety valve is closed are detected. The scale and the scale of the U-shaped mercury column manometer 8 at the balance position can calculate the opening pressure and closing pressure of the safety valve through the formula "JB12666-2016, 5.3.16.3" (the opening pressure and closing pressure cannot be directly measured, the opening pressure Acquisition of pressure and closing pressure is not the technical problem to be solved by this device. The detection of safety valve action is the scale, safety When the valve is closed, the scale of the U-shaped mercury column manometer 8 and the scale of the U-shaped mercury column manometer 8 at the balance position are detected. The consistency described in " belongs to common knowledge in this field);

In conjunction with Figure 4, during operation, the air supply pipeline 6 is first connected to the air compressor 7, the valve-regulated battery 2 and the pressure gauge 3 through the tee pipe 5. After the three are connected, the valve port of the control valve 4 is adjusted so that the air supply pipeline 6 The air pressure inside is maintained at 0.1Mpa. At this time, the first shut-off valve 9 and the second shut-off valve 10 are in the closed state. Put the valve-controlled battery 2 into the water tank 12 and fill the water tank 12 with water level higher than the valve-controlled battery. The distance between the water surface of the water tank 12 and the upper end surface of the valve-regulated battery 2 is less than 10mm (consistent with the above-mentioned connection steps of the valve-regulated battery air tightness test, so only one connection can complete two a detection operation);

Read the scale of the U-shaped mercury manometer 8 before the air compressor 7 is powered on to obtain the scale value of the U-shaped mercury manometer 8 at the balance position;

After the air compressor 7 is powered on, the air pressure is 0.1Mpa through the control valve 4 to the air supply pipeline 6, and the first cut-off valve 9 is slowly opened, and then 0.1Mpa of gas is charged inside the valve-regulated battery 2 through the three-way pipe 5, Open the second shut-off valve 10, the gas of 0.1Mpa enters the U-shaped mercury manometer 8, close the second shut-off valve 10 after the water tank 12 starts to bubble, read the scale value of the U-shaped mercury manometer 8, and obtain the safety valve The scale value of the U-shaped mercury manometer 8 when the valve is opened;

Close the air compressor 7, the control valve 4 and the first shut-off valve 9, open the second shut-off valve 10, the valve-regulated storage battery 2 is not filled with gas continuously, the bubbles in the water tank 12 disappear, and the U-shaped mercury column pressure gauge 8 is read. The scale value is the scale value of the U-shaped mercury manometer 8 when the safety valve is closed.

Example 2

For the convenience of operation, the cabinet body 1 includes a cabinet door and a cabinet body, the cabinet body is a square structure, the cabinet body and the cabinet door are hinged, the cabinet door is a square plate, and a long window is provided on the cabinet door. A concave bracket 13 is provided, one section of the two vertical sections of the bracket 13 is fixed to the side plate of the cabinet body, and the other section is fixed to the U-shaped mercury manometer;

Described pressure gauge 3, control valve 4 and tee pipe 5 are fixed with the side plate of cabinet body slightly by positioning.

Preferably, the cabinet body 1 is further provided with a second detection pipeline, and the second detection pipeline has the same structure as the detection pipeline.

In order to ensure the detection accuracy of the U-shaped mercury manometer 8, a bracket 13 is set to fix the U-shaped mercury manometer 8, so as to avoid detection errors caused by external interference such as shaking of the U-shaped mercury manometer 8.

The above-described embodiments are only preferred embodiments of the present utility model, and do not limit the scope of implementation of the present utility model, so all equivalent changes or changes made according to the structure, features and principles described in the patent scope of the present utility model Modifications should be included in the patent scope of the utility model application.

Claims (5)

1. A two-in-one device for detecting air tightness and safety valve action of a valve-controlled storage battery comprises a cabinet body (1), the valve-controlled storage battery (2) and a pressure gauge (3), and is characterized in that a detection pipeline is arranged between the valve-controlled storage battery (2) and the pressure gauge (3), the detection pipeline comprises a control valve (4), a three-way pipe (5) and an air supply pipeline (6), one end of the control valve (4) is connected with an air compressor (7) through the air supply pipeline (6), the other end of the control valve (4) is connected with the three-way pipe (5) through the air supply pipeline (6), one side of the three-way pipe (5) is connected with the valve-controlled storage battery (2) through the air supply pipeline (6), the other end of the three-way pipe (5) is connected with the pressure gauge (3), and the other end of the pressure gauge (3) is connected with a U-shaped mercury column pressure gauge (8) through the air supply pipeline (6);

a first stop valve (9) is arranged between the control valve (4) and the three-way pipe (5), and a second stop valve (10) is arranged between the pressure gauge (3) and the U-shaped mercury column pressure gauge (8).

2. The device for detecting the airtightness and the action of the safety valve of the valve-regulated storage battery according to claim 1, wherein the valve-regulated storage battery (2) comprises a housing, the housing is of a square structure with a hollow interior, a circular air inlet hole (11) is formed near the upper end of the housing, a sealing rubber ring is arranged on the ring surface of the air inlet hole (11), and the air supply pipeline (6) is connected with the housing of the valve-regulated storage battery (2) through the air inlet hole (11).

3. The two-in-one device for detecting the airtightness and the action of the safety valve of the valve-regulated storage battery according to claim 2, wherein the valve-regulated storage battery (2) is provided with a water tank (12), the water tank (12) is a square structure with a hollow interior and an open upper end, and the height of the water tank (12) is greater than that of the valve-regulated storage battery (2).

4. The two-in-one device for detecting the air tightness and the safety valve action of the valve-regulated storage battery according to claim 1, wherein the cabinet body (1) comprises a cabinet door and a cabinet body, the cabinet body is of a square structure, the cabinet body is hinged with the cabinet door, the cabinet door is a square plate, a long strip-shaped window is formed in the cabinet door, a concave-shaped support (13) is arranged on the cabinet body, one of two vertical sections of the support (13) is fixed with a side plate of the cabinet body, and the other section of the support is fixed with a U-shaped mercury column pressure gauge;

the pressure gauge (3), the control valve (4) and the three-way pipe (5) are fixed with a side plate of the cabinet body through positioning pins.

5. The two-in-one device for detecting the airtightness and the action of the safety valve of the valve-regulated storage battery according to claim 1, wherein a second detection pipeline is further arranged in the cabinet body (1), and the second detection pipeline has the same structure as the detection pipeline.

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