Welded three-way pipe fitting air tightness detection device
A technology for air tightness detection and three-way pipe fittings, which is applied in the direction of using liquid/vacuum for liquid tightness measurement, etc. The effect of improving the visual effect, reducing the loss, and improving the detection effect
Inactive Publication Date: 2020-11-20
张青
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Problems solved by technology
[0002] Many three-way pipes are welded by two pipes at an angle. In order to ensure the tightness of the weld seam of the three-way pipe, it is necessary to perform a leak test on the weld seam of the three-way pipe after welding. When testing the tightness, it is necessary to block two of the ports, and then pass the gas through the other port, and then put the welded tee fitting into the water, and observe whether there are bubbles coming out of the weld, if there are no bubbles, If there are bubbles in the weld, it means that the weld quality of the three-way pipe fitting is not good and the sealing is not enough.
The welded three-way pipe fittings have a certain angle between the two welded pipe bodies according to the actual production requirements. When testing the air tightness of different types of three-way pipe fittings, due to the different angles, different tooling is required to check the two of them. It is very cumbersome to replace the tooling, and in the actual operation process, it is found that there is an eccentricity error between the outer pipe body and the inner diameter of the welded tee fittings in the production process, and the error is within the allowable error range of the actual installation. , but when it is tested for air tightness, when it is blocked, it will cause damage to the thread inside the pipe fitting and affect the quality of the product, and it needs to be tested for air tightness under different external pressures. Now There is no air tightness test for welded tee fittings for equipment with different external pressures in the existing technology, and there is a need for improvement
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[0029] The present invention will be further described below in conjunction with accompanying drawing:,
[0030] Such as figure 1 , figure 2 , image 3The air tightness detection device for welded three-way pipe fittings shown includes a housing 1, a blocking part 5, and a ventilating part 7. The housing 1 is fixed with a gas storage box 2, and the middle of the housing 1 A water storage tank 3 is provided at the position, a control panel 101 is provided at the edge of the upper end of the casing 1, and an air storage box 2 is also provided at the edge of the upper end of the casing 1, and the gas storage box 2 is connected with a second One connection air pipe 201, the second connection air pipe 202, the third connection air pipe 203, the fourth connection air pipe 204, the bottom end of the water storage tank 3 is provided with an electromagnetic telescopic rod 8, and the connection between the electromagnetic telescopic rod 8 and the water storage tank 3 is provided with...
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The invention relates to the technical field of airtightness detection, in particular to a welded three-way pipe fitting air tightness detection device which comprises an arc-shaped fixing base, an arc-shaped sliding block, a plugging connecting rod, an arc-shaped sliding groove, a first arc-shaped stroke groove, a second arc-shaped stroke groove, a threaded sleeve, a gasket, an air inlet pipeline, a first plugging air bag, an air inlet hole and an air inlet connector, so that the plugging connecting rod does not cause rigid collision to threads in a pipe body; therefore, damage to the weldedthree-way pipe body in the air tightness detection link can be avoided, the reject ratio of products is reduced, the loss of enterprises is reduced, the cost-reducing and benefit-increasing enterprisedevelopment plan is met, the practicability of the device is improved, the device can be suitable for welded three-way pipe fittings of different batches, and the universality of the device is improved.
Description
technical field [0001] The invention relates to the technical field of air tightness detection, in particular to an air tightness detection device for welded three-way pipe fittings. Background technique [0002] Many three-way pipes are welded by two pipes at an angle. In order to ensure the tightness of the weld seam of the three-way pipe, it is necessary to perform a leak test on the weld seam of the three-way pipe after welding. When testing the tightness, it is necessary to block two of the ports, and then pass the gas through the other port, and then put the welded tee fitting into the water, and observe whether there are bubbles coming out of the weld, if there are no bubbles, It means that the welding quality is good and the sealing is good; if there are bubbles in the weld, it means that the weld quality of the three-way pipe fitting is not good and the sealing is not enough. The welded three-way pipe fittings have a certain angle between the two welded pipe bodies...
Claims
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IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor张青
Owner张青