Quantitative pressurization equipment and pipeline air tightness testing device
A technology of pressurized equipment and detection devices, which is applied in the direction of measuring devices, fluid tightness testing, liquid tightness measurement using liquid/vacuum degree, etc. Issues that affect the efficiency of air tightness testing of gas pipelines
Active Publication Date: 2020-10-30
GUANGZHOU DEV GRP CO LTD +2
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Problems solved by technology
However, since the amount of gas injection is difficult to control, it is easy to cause damage to gas meters, valves, joints, etc. due to the internal gas pressure exceeding the detection pressure
At the same time, it also seriously affects the efficiency of gas pipeline air tightness detection
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.
[0027] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.
[0028] Unless otherw...
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The invention discloses a quantitative pressurizing device and a pipeline air impermeability detecting device. The quantitative pressurizing device comprises a housing, a rotating body, more than twoelastic components and a transmission component. The pipeline air impermeability detecting device comprises the quantitative pressurizing device, a first connecting pipe, a second connecting pipe, a shut-off valve and a U-shaped pressure gauge. The U-shaped pressure gauge first communicates with the atmosphere and is placed stably in order that the two ends of the U-shaped pressure gauge have thesame liquid level height; then the quantitative pressurizing device is started to inject a compressed gas into the U-shaped pressure gauge and a gas pipeline through the first connecting pipe; after aliquid level difference of the U-shaped pressure gauge reaches a preset value, the shut-off valve is closed; the liquid level difference of the U-shaped pressure gauge is observed and it is determined that the gas pipeline has good air impermeability if the liquid level difference does not change. In this way, the pipeline air impermeability detecting device achieves a convenient pipeline air impermeability detecting operation, thereby contributing to the improvement in the pipeline air impermeability detecting efficiency.
Description
technical field [0001] The invention relates to the technical field of pipeline detection, in particular to quantitative pressurization equipment and a pipeline airtightness detection device. Background technique [0002] As the demand for gas continues to increase, more and more gas pipelines are gradually laid indoors to meet the needs of daily life. However, many potential dangers have also been brought thereupon, for example, leakage of indoor gas. In order to prevent the leakage of indoor gas and ensure personal safety, it is essential to test the air tightness of gas pipelines. [0003] For this reason, a U-shaped pressure gauge detection device is generally used for air tightness detection of indoor gas pipelines. Usually, the U-shaped manometer detection device includes a U-shaped manometer and a pressurizing device. During the test process, the U-shaped manometer is generally pressurized by a wind head pump with a sliding outer tube. However, since the amount of ...
Claims
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IPC IPC(8): G01M3/28
CPCG01M3/2815
Inventor 吴迪罗超潘志全
Owner GUANGZHOU DEV GRP CO LTD