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Air floating piston for reciprocating type compressor

A compressor and reciprocating technology, applied in the direction of liquid variable capacity machinery, mechanical equipment, variable capacity pump components, etc., can solve the problems of long procurement cycle and affecting the efficiency of natural gas production departments, and reduce the number of shutdowns and maintenance costs , easy processing and assembly, and the effect of improving mechanical properties

Active Publication Date: 2019-01-15
INST OF SINOPEC OILFIELD EQUIP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the support ring is basically imported, and the procurement cycle is long, which seriously affects the efficiency of the natural gas production department

Method used

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  • Air floating piston for reciprocating type compressor
  • Air floating piston for reciprocating type compressor
  • Air floating piston for reciprocating type compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] like Figure 1-7 As shown, the installation steps of the air-floating piston structure for the reciprocating compressor are as follows:

[0048] 1) Assemble the one-way valve part 2: fix the steel ball 23 and the spring 25 in the one-way valve chamber 24, and then thread the retaining ring 22 and the one-way valve body 26;

[0049] 2) Install the assembled one-way valve part 2 in the one-way valve part installation hole 31 in the Venturi tube 3, and connect with tapered threads;

[0050] 3) Install the Venturi tube 3 in the Venturi tube installation hole 401 of the piston front body 4 to ensure that the low-pressure and low-temperature air inlet hole of the Venturi tube 3 communicates with the low-temperature and low-pressure air outlet 404 of the piston front body 4;

[0051] 4) Install the scraper ring 9 in the scraper ring groove 402 of the front end body 4 of the piston, and respectively install the O-rings 8 in the seal ring grooves on the left end surface and the...

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Abstract

The invention discloses an air floating piston for a reciprocating type compressor. The air floating piston comprises a piston body, a piston rod, a Venturi tube and a one-way valve; the piston rod ismounted at the axial center of the piston body; a connecting cavity, a left air cavity and a right air cavity are formed in the piston body; the Venturi tube is arranged in the piston body; the one-way valve is installed in the Venturi tube; the Venturi tube is communicated with the connecting cavity and the left air cavity; and the left air cavity is communicated with the right air cavity through air cavity through holes, wherein a part of the air cavity through holes are communicated with the outside of the piston body. According to the air floating piston for the reciprocating type compressor of the invention, by means of the Venturi throttling, pressure regulation and cooling principle, with an external cooling medium not required, gas cooling and decompression are realized through amechanical means; and therefore, the wear of sealing components and an air cylinder is decreased; and the service lives of the sealing components can be prolonged, the maintenance period of the compressor can be prolonged, the number of the times of the shutdown of the compressor and the maintenance costs of the compressor can be decreased, the mechanical performance of the compressor can be improved, and costs can be saved.

Description

technical field [0001] The invention relates to the field of air floating pistons. More particularly, the present invention relates to air bearing pistons for reciprocating compressors. Background technique [0002] Natural gas, as a clean energy, has become an important bridge for global energy transition from high-carbon to low-carbon. Natural gas reciprocating compressors are one of the important equipment in natural gas related industries, such as drilling, mining, storage, transportation, etc. Compressors are gradually changing to high power, high speed, low energy consumption, low noise and other goals, which put forward higher requirements for the reliability and stability of the compressor structure. The piston is the main part of the reciprocating compressor. The conventional reciprocating compressor uses a support ring to support the piston to perform reciprocating linear motion in the cylinder. The support ring is a vulnerable part and requires effective lubrica...

Claims

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Application Information

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IPC IPC(8): F04B39/00
CPCF04B39/0005F04B39/0016
Inventor 车强王鹏飞王凌寒周斌张勃飞简志勇
Owner INST OF SINOPEC OILFIELD EQUIP CORP
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