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Novel fluid damping device capable of coping with pressure jump

A fluid damping and pressure technology, applied in the direction of pipes/pipe joints/fittings, mechanical equipment, pipe components, etc., can solve problems such as low temperature problems, low pressure sensitivity, poor damping effect, etc., to achieve simple structure, reduce Production cost, damping effect is obvious

Pending Publication Date: 2018-06-19
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of natural gas transportation, there will be two kinds of problems: pressure sudden change and ice blockage
Although the device has a simple structure, it has low sensitivity, poor stability and cannot solve the problem of low temperature during transportation; Chinese invention patent CN106523842 provides a new type of spring damping device to deal with sudden changes in pipeline pressure. The change of pressure will move back and forth, which will drive the damping baffle in the baffle system to move, resulting in the change of the gas flow area, so as to achieve the purpose of stabilizing the pressure and flow
The device has high adjustment sensitivity, but the damping effect is not good
[0004] At present, there are few studies on related issues in the natural gas industry. The above-mentioned related damping devices have certain limitations, and the sensitivity to pressure is not high. Therefore, a new type of fluid damping device is needed

Method used

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  • Novel fluid damping device capable of coping with pressure jump
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As mentioned above, a new type of fluid damping device to deal with sudden pressure changes, including:

[0030] The hollow box 6 is placed vertically, and its shape is an inverted truncated cone. Its upper and lower ends are coaxially provided with a pipe outlet, a pipe inlet, and a connecting portion 8 for connecting the air outlet pipe and the air inlet pipe respectively. The pipe diameters of the pipeline and the inlet pipeline are relatively small, so threaded connection is adopted, that is, external threads are set on the air outlet pipeline and the inlet pipeline, and the pipeline outlet and the pipeline inlet of the hollow box 6 are correspondingly provided with internal threads;

[0031] The damping component 5 is freely placed in the box. When the damping component 5 rises to contact the pipeline outlet, the tightness between the upper end of the damping component 5 and the pipeline outlet is 30% to 40%. When the damping component 5 descends a...

Embodiment 2

[0042] Such as figure 2 As shown, the difference between the present embodiment and the embodiment is that since the pipe diameters of the air outlet pipe and the air inlet pipe are relatively large, the connecting portion 8 adopts a flange connection, that is, a flange is arranged on the air outlet pipe and the air inlet pipe, and at the same time The upper and lower ends of the hollow box body 6 are provided with corresponding flanges and are fixedly connected by bolts.

[0043] The working principle of the fluid damping device provided in the above embodiments is as follows:

[0044] The natural gas first passes through the stainless steel mesh 3 at the lower end of 100-150 mesh, and before entering the fluid damping device, small solid particles such as natural gas hydrate ice crystals are intercepted outside the device, or crushed into smaller particles to prevent ice blockage and affect the flow of natural gas. During normal transportation, natural gas flows in from th...

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Abstract

The invention discloses a novel fluid damping device capable of coping with pressure jump. The novel fluid damping device comprises a hollow box body and a damping part, wherein the hollow box body isvertically placed, is in the shape of an inverted circular truncated cone, is coaxially provided with a pipeline outlet and a pipeline inlet at upper and lower ends as well as a connecting part for connecting a gas outlet pipeline to a gas inlet pipeline; the damping part is freely placed in the box body; when the damping part rises to be in contact with the pipeline outlet, close fit degree between the upper end of the damping part and the pipeline outlet is 30%-40%; and when the damping part drops to be in contact with the pipeline inlet, close fit degree between the lower end of the damping part and the pipeline inlet is 95%-100%. The novel fluid damping device is simple in structure, can retard pressure jump, effectively prevents backflow, is high in sensitivity, balances a device temperature, prevents an ice blockage phenomenon generated due to the fact that the temperature is too low, can reduce operation cost of enterprises, and improves benefits.

Description

technical field [0001] The invention belongs to the field of utilization of natural gas pressure energy, and in particular relates to a novel fluid damping device for dealing with sudden pressure changes, which is applied to the process of generating electricity by natural gas pressure energy. Background technique [0002] As the most potential fossil fuel, natural gas has the advantages of environmental protection and sufficient combustion, so it has also received more and more attention. China is on track to overtake Japan in 2018 to become the world's largest importer of natural gas after surpassing South Korea last year. The use of natural gas has become popular, and the gas pipeline network is spread all over the country. Natural gas enters the city gas through the pipeline network system. The so-called pipeline transportation of natural gas is to make the natural gas extracted from the gas well go through the gas gathering pipeline network, conventional treatment and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/05F16L55/055
CPCF16L55/043F16L55/05F16L55/055
Inventor 陈钰丁力徐文东梁东丁际昭
Owner SOUTH CHINA UNIV OF TECH
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