Buffer tank structure for natural gas compressor

Abstract

The invention discloses a buffer tank structure for a natural gas compressor. The buffer tank structure comprises a buffer tank, a gas outlet pipe and a gas inlet pipe. The buffer tank is formed by fixedly connecting a middle barrel and end sockets at two ends, the gas outlet pipe is fixedly connected with any one of the end sockets, and the gas inlet pipe is fixedly connected with the barrel. The buffer tank structure further comprises a supporting plate and two flexible pipes. The two flexible pipes are fixedly connected with the gas outlet pipe and the gas inlet pipe respectively, the supporting plate is arranged below the buffer tank, and the supporting plate is fixedly connected with the buffer tank. The buffer tank structure is favorable for reducing complex degree of stress on the buffer tank, the gas inlet pipe and the gas outlet pipe and the stress and prevents vibration of a higher compressing level and a lower compressing level of the buffer tank from being delivered to the buffer tank.

Description

technical field [0001] The invention relates to the field of natural gas compressor components, in particular to a buffer tank structure for a natural gas compressor. Background technique [0002] In order to avoid excessively high discharge gas temperature from natural gas compressors, reduce compressor power consumption, increase the utilization rate of cylinder volume and simplify the compressor structure, existing natural gas compressors generally adopt multi-stage compression, and there is a compressor between each stage. The natural gas buffer tank is used to eliminate or weaken the surge at the inlet of the next stage and when the suction volume of the next stage reaches its peak value, the suction port will not be too low due to excessive gas intake. [0003] However, the exhaust pressure of the existing natural gas compressor reaches the medium pressure or even high pressure range after multi-stage compression, and due to the discontinuity of the exhaust and suction...

AI Technical Summary

Problems solved by technology

[0003] However, the exhaust pressure of the existing natural gas compressor reaches the medium pressure or even high pressure range after multi-stage compression, and due to the discontinuity of the exhaust and suction of the piston compressor, the buffer tank and its connecting pipe are resonant in the gas column and excited in the pipe. Under the influence of stress and pipeline mechanical resonance, the possibility of cracks appearing in the heat-affected zone of the weld position in a short period of time is very high, which seriously affects the normal production of natural gas compressors and the safety of production personnel

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