Plastic pipe sealing performance experiment device

A technology of plastic pipes and experimental devices, which is applied in the direction of liquid tightness measurement by using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc. It can solve the problems of overshoot pressure, low degree of automation, and inaccurate experimental results, etc. Achieve the effects of improving pressure output accuracy, constant and accurate input pressure, and high accuracy of test parameters

Active Publication Date: 2017-02-15
CHENGDE PRECISION TESTING MACHINE
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AI Technical Summary

Problems solved by technology

[0002] At present, the applicability test device for large-diameter drainage pipes mainly has the following defects: 1. The test accuracy is not high. Because the traditional control method does not have a large buffer device, the pressure control accuracy is not high, and it is easy to overshoot or the pressure cannot be reached. T...

Method used

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  • Plastic pipe sealing performance experiment device
  • Plastic pipe sealing performance experiment device

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Depend on Figure 1-2 As can be seen from the shown embodiment, the present embodiment includes a test bench 1, on which a fixture fixing shaft is arranged, and a pipe fixture 2 for fixing the tube to be measured and a pipe fixture 2 for sealing the tube to be tested are installed on the fixture fixing shaft. The first port sealing jig 3 and the second port sealing jig 4 at both ends of the measuring tube are provided with plastic pipe pressure test connecting ports, and the jigs are fixed The shaft includes a first pipe clamp fixed shaft 5 and a second pipe clamp fixed shaft 6 with the same axis line, a buffer gap is provided between the first pipe clamp fixed shaft 5 and the second pipe clamp fixed shaft 6, The second pipe fixture fixed shaft 6 is provided with an axial displacement device (axially displaced by screwing in a...

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Abstract

The invention discloses a plastic pipe sealing performance experiment device comprising a first pipe clamp fixing shaft and a second pipe clamp fixing shaft which have the same axial line. A buffer gap is arranged between the first pipe clamp fixing shaft and the second pipe clamp fixing shaft. The first pipe clamp fixing shaft or the second pipe clamp fixing shaft is provided with an axial displacement device. The plastic pipe sealing performance experiment device also comprises an air compressor. The air compressor is communicated with the plastic pipe pressure experiment communicating port of a first port sealing clamp through an air source electromagnetic valve. The plastic pipe pressure experiment communicating port of the first port sealing clamp is communicated with a vacuum pump through a vacuum electromagnetic valve. The plastic pipe pressure experiment communicating port of a second port sealing clamp is the pressure tap of the pressure transmitter of a pipe under test. The air compressor, the air source electromagnetic valve, the vacuum electromagnetic valve and the pressure transmitter of the pipe under test are communicated with an embedded control system. The plastic pipe sealing performance experiment device has the characteristics of being high in test parameter precision and high in degree of automation.

Description

technical field [0001] The invention relates to an experimental device for sealing performance of plastic pipes. Background technique [0002] At present, the applicability test device for large-diameter drainage pipes mainly has the following defects: 1. The test accuracy is not high. Because the traditional control method does not have a large buffer device, the pressure control accuracy is not high, and it is easy to overshoot or the pressure cannot be reached. The required value is specified, resulting in inaccurate experimental results. 2. The degree of automation is low, and full automation cannot be realized, resulting in the detection data being greatly affected by human factors. 3. The test method for the negative pressure resistance of the sample in different environments is too simple. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a plastic pipe tightness experiment device, which has the characteri...

Claims

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Application Information

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IPC IPC(8): G01M3/28
Inventor 朱金锋于东王晓军王建昌
Owner CHENGDE PRECISION TESTING MACHINE
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