CN201974277U - Air-tight testing device - Google Patents

Abstract

The utility model provides an air-tight testing device, which comprises a water transport pipeline and also comprises an air source and a first joint, wherein the water transport pipeline is provided with an air inlet and an air outlet; the air source is connected with the air inlet; the air source and the air inlet are connected through an air pressure indicator and a regulating switch; the air pressure indicator and the regulating switch are arranged in manner of alternate connection; and the first joint is connected with the air outlet. Thus, compressed air is utilized by the air-tight testing device to carry out air-tight inspection on the water transport pipeline in a mould; according to the characteristic that the flowability of gas is stronger than that of water, whether a set of water transport pipelines leaks or not can be detected in 2-5 minutes. The testing device is simple to operate, and thereby, the detection time is saved, and the economic benefits are improved. Moreover, compared with the prior art, the testing process is safer and more reliable. Moreover, as the first joint has the characteristic of high interchangeability, the first joint can be replaced at short notice, and the replacement is convenient. Moreover, the air-tight testing device can adapt to the air outlets on the mould water transport pipelines with different standards.

Description

A kind of air tightness testing device

technical field

The utility model relates to an auxiliary device, in particular to a test device for checking the sealing effect of a mold by carrying water.

Background technique

At present, the leak detection of the mold water pipeline is mainly tested by a hydraulic machine. The hydraulic machine uses clean water at room temperature as the transport medium. It can be used in various pressure vessels, boilers, pipe fittings and other places that require pressure tests. The test pressure value can be locked according to needs. And can automatically maintain pressure.

Please refer to Figure 1, the general hydraulic machine includes a pressure relief valve and a relief valve installed and connected to both ends of the pressure test pipeline, the test method of the hydraulic machine has the following steps:

a. Open the handwheel of pressure relief valve 11' and the adjusting nut of relief valve 12';

b. Start the motor, run it under normal pressure for 5 minutes, check whether the operation of the water pump 13' is normal; if there is no abnormal sound, and the discharge medium of the water pump 13' has no obvious fluctuations, the boost operation can be performed at this time;

c. Close the hand wheel of the pressure relief valve 11', slowly adjust the relief valve 12' to make the system pressure rise slowly, after reaching the test pressure, loosen the adjustment nut of the relief valve 12' to remove the discharge pressure of the water pump 13', and then stop , at this time, the pressure test pipeline 14' is in an automatic pressure maintaining state;

d. After the pressure test is completed, open the hand wheel of the pressure relief valve 11' to remove the pressure of the pressure test pipeline 14';

e. If it is used for constant pressure output medium, the hand wheel of pressure relief valve 11' should be closed, the overflow valve 12' should be adjusted to reach the test pressure, and the lock nut should be locked.

Generally, when using the above-mentioned hydraulic machine to test the leak detection of the mold water pipeline 14', it has the following defects: first, the installation and disassembly are complicated, and if the joint is not tightly sealed during the test, the water pressure of 3MPA will spray out and cause harm to personnel , the safety is not strong; second, if there are as many as 20 sets of water transported by the mold, it takes 10 minutes to test one set of water transport, and the 20 sets of water transport will consume 200 minutes, which will slow down the mold production cycle.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and provide a testing device which can quickly and conveniently test the air tightness of the water pipeline and save the testing time.

The utility model is achieved in this way, an air tightness test device, including a water delivery pipeline, which is provided with an air inlet and an air outlet, the test device also includes: an air source, connected to the air inlet , the air source and the air inlet are connected through an air pressure indicator and an adjustment switch, and the air pressure indicator and the adjustment switch are connected alternately; a first joint is connected to the air outlet.

Further, it also includes a second joint installed and connected to the air inlet, the air pressure indicator is installed and connected to the other end of the second joint, one end of the regulating switch is installed and connected to the air pressure indicator, and One end is installed and connected to the air source through a third joint.

Furthermore, the air pressure indicator is connected between the second joint and the regulating switch through a three-way connection.

Specifically, the first anti-trip is provided on the first joint, and the first anti-trip cooperates with the air outlet to rotate 90 degrees for a tight fit; the second joint is provided with a second anti-trip buckle, the second anti-trip buckle is matched with the air inlet and rotated 90 degrees for a tight fit.

Further, the first anti-trip has a first slot; the second anti-trip has a second slot.

Further, the air pressure display instrument is a barometer.

Furthermore, the regulating switch is a high-pressure ball valve.

Specifically, the water transport pipeline is arranged in the mould.

The utility model has the following technical effects:

1) An air tightness testing device of the present invention provides an air source connected to the air inlet, and the air source and the air inlet are connected through an air pressure indicator and an adjustment switch, and the air pressure The display instrument and the regulating switch are connected alternately, and a first joint is provided to connect the air outlet; in this way, compressed air is used to check the airtightness of the water pipeline in the mold, and according to the characteristic that the fluidity of gas is stronger than that of water , can detect whether there is leakage in a group of water pipelines within 2-5 minutes, this test device is easy to operate, thus saving detection time and improving economic benefits, and the test process is safer and more reliable than the existing technology ; In addition, because the first joint has strong interchangeability, it can be replaced in a short time, it is convenient to replace, and can adapt to the air outlet on the mold water pipeline of different standards.

2) The utility model further includes a second joint installed and connected to the air inlet, and the other end of the regulating switch is installed and connected to the air source through a third joint; wherein, the second joint, the third The joint also has the characteristics of strong interchangeability, and can also be replaced in a short time. It is convenient to replace, and can be respectively adapted to the air inlet and the air source interface on the mold water delivery pipeline of different standards.

3) The first joint and the second joint are respectively provided with a first through groove and a second through groove, and the first through groove cooperates with the steel ball in the air outlet to rotate 90 degrees for tight fit, and the second through groove The through groove cooperates with the steel ball in the air inlet to rotate 90 degrees to tightly fit, which ensures the good airtightness of the test device.

Description of drawings

Fig. 1 is the prior art structural representation of the utility model;

Fig. 2 is the structural representation under the ventilation state of testing device in the utility model embodiment;

Fig. 3 is a schematic diagram of the structure of the test device in the pressure-holding state in the embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Generally, because the molecular distance of gas is large, it is easy to diffuse and has better fluidity; in addition, liquid has a certain viscosity, so the fluidity of liquid is less than that of gas; and the utility model is based on the compression of gas in a closed space The permeability is stronger than that of water. An air tightness test device is provided. Compressed air is introduced into the water delivery pipeline of the mould, and the air inlet and outlet are closed at the same time, and the pressure is kept for 2-5 minutes. Change to determine whether the airtightness in the water pipeline of the mold is intact and whether there is leakage. If the air pressure gauge drops, it means that there is leakage in the pipeline, otherwise it is qualified.

Referring to Fig. 2 and Fig. 3, the utility model embodiment provides a kind of airtightness testing device 1 according to above-mentioned design, comprises a water transport pipeline 11, and it is provided with an air inlet 111 and an air outlet 112, and described testing device 1 also includes: an air source 12 connected to the air inlet 111, the air source 12 and the air inlet 111 are connected through an air pressure indicator and an adjustment switch, the air pressure indicator and the air inlet 111 are connected Adjusting switches are connected between phases; a first connector 13 is connected to the air outlet 112 . In this way, an airtightness test device 1 of the utility model uses compressed air to check the airtightness of the water delivery pipeline 11 in the mold 2. According to the characteristics that the fluidity of gas is stronger than that of water, it can be tested within 2-5 minutes. Whether there is leakage in a group of water pipelines 11, the test device is simple to operate, thereby saving the detection time and improving economic benefits, and the test process is safer and more reliable than the prior art; in addition, due to the first The joint 13 has the characteristics of strong interchangeability, so it can be replaced in a short time, it is convenient to replace, and can adapt to the air outlet 112 on the mold water delivery pipeline 11 of different standards.

Further, in the structure of the specific embodiment of the present utility model, it should be noted that the air pressure indicator is a barometer 14; the regulating switch is a high pressure ball valve 15; the testing device 1 also includes a second The joint 16 is installed and connected to the air inlet 111, and the second anti-tripping is provided on the second joint 16. The second anti-tripping is a second through groove 161, and the inner wall of the air inlet 111 There are many steel balls, and the second through groove 161 cooperates with the steel balls to rotate 90 degrees to tightly fit, so that the second joint 16 is firmly fixed on the air inlet 111, ensuring that the test device 1 Good airtightness, the air pressure gauge 14 is installed and connected to the other end 162 of the second joint 16, one end 151 of the high pressure ball valve is installed and connected to the air pressure gauge 14, and the other end 152 is installed through a third joint 17 Connect the air source to the 12 connectors. Wherein, the second joint 16 and the third joint 17 also have the characteristics of strong interchangeability, and can also be replaced in a short time. 111 and the air source 12 interface.

Furthermore, the barometer 14 in the embodiment of the present invention is connected between the second joint 16 and the high-pressure ball valve 15 through a three-way connector 18, and the three-way connector 18 has a hollow structure, which is convenient for the The installation and disassembly of the barometer 14 has a first end 181, a second end 182, and a third end 183, wherein the first end 181 is connected to the other end 162 of the second joint 16, and the second end 182 is connected to the other end 162 of the second joint 16. The high-pressure ball valve 15, the third end 183 is connected to the air pressure gauge 14.

Referring to FIG. 2 and FIG. 3 , the high-pressure ball valve 15 and the third joint 17 are connected through a hollow connecting rod 19 . One end of the hollow connecting rod is connected to the high-pressure ball valve 15, and the other end is connected to the third joint 17, and the third joint 17 is connected to the gas source 12, and the gas flow output by the gas source 12 passes through the A third joint 17, a hollow connecting rod 19, a high-pressure ball valve 15, a tee connector 18 and a second joint 16, the first joint 13 is connected to the air outlet 112, and the first joint 13 is provided with a first Anti-tripping, the first anti-tripping is a first through groove 131, the inner wall of the air outlet 112 is provided with a plurality of steel balls, the first through groove 131 cooperates with the steel balls to rotate 90 degrees to tightly fit, and can The first joint 13 is firmly fixed on the air outlet 112, which ensures good airtightness of the testing device 1, and at the same time forms a closed circuit together.

Please refer to Fig. 2 and Fig. 3. It should be noted that in the structure of the specific embodiment of the present utility model, the water transport pipeline 11 is arranged in the mold 2 and is controlled by the test device under a pressure range of 0-3 atmospheres. 1 test, in the specific test process, the operation steps are as follows:

1. First open the high-pressure ball valve 15, and block the air outlet 112 of the mold water pipeline 11 with the first joint 13;

2. Then install and insert the second joint 16 into the water inlet 111 of the mold water delivery pipeline 11, and turn the anti-tripping 90 degrees;

3. Connect the air source 12 to the third joint 17. When the pointer of the air pressure gauge 14 stops rotating, close the high-pressure ball valve 15, seal the compressed air in the water delivery pipeline 11, and then remove the air source 12 joint;

4. Observe the barometer 14 and wait for about 2 to 5 minutes. If the pointer of the barometer 14 shows that the pressure does not decrease, it means that the water transportation pipeline 11 has no leakage and the airtightness is good. Otherwise, it means that there is leakage and the airtightness is good. not good;

5. After the inspection, first open the high-pressure ball valve 15 to release the gas in the water delivery pipeline 11, and then loosen each second joint 16, and continue to check the next group of water delivery according to the above steps.

The above description is only a preferred embodiment of the utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should include Within the protection scope of the present utility model.

Claims (8)

1. A kind of airtightness testing device, comprises a water pipeline, and it is provided with an air inlet and an air outlet, it is characterized in that, described testing device also comprises: An air source connected to the air inlet, the air source and the air inlet are connected through an air pressure indicator and an adjustment switch, and the air pressure indicator and the adjustment switch are connected alternately; A first connector, connected to the air outlet. 2. An air tightness testing device according to claim 1, further comprising a second joint installed and connected to the air inlet, the air pressure indicator installed and connected to the second joint The other end of the adjustment switch is installed and connected to the air pressure indicator, and the other end is installed and connected to the air source through a third joint. 3. The air tightness testing device according to claim 2, wherein the air pressure indicator is connected between the second joint and the regulating switch through a three-way connection. 4. An airtightness testing device according to any one of claims 1-3, characterized in that: a first anti-trip is provided on the first joint, and the first anti-trip is matched with the The air outlet is rotated 90 degrees for tight fit; the second joint is provided with a second anti-tripping buckle, and the second anti-tripping buckle cooperates with the air inlet to rotate 90 degrees for tight fit. 5 . The airtightness testing device according to claim 4 , wherein: the first anti-trip has a first slot; the second anti-trip has a second slot. 6 . 6. An airtightness testing device according to any one of claims 1-3, wherein the air pressure display device is a barometer. 7. An airtightness testing device according to any one of claims 1-3, characterized in that: the regulating switch is a high-pressure ball valve. 8. An airtightness testing device according to claim 1, characterized in that: the water delivery pipeline is arranged in the mould. the

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