Water-cooling coal bed gas recovery compressor

Abstract

The invention discloses a water-cooling coal bed gas recovery compressor, and belongs to the technical field of pneumatic mechanical devices. The compressor comprises a shell, a compression device isfixedly mounted on the shell and comprises a compression rod, a sealing ring, a rotating shaft and a piston, the rotating shaft is fixedly mounted on the left side of the compression rod, one end of aconnecting rod is fixedly mounted on the outer side of the rotating shaft, a rotating disc is fixedly connected to the other end of the connecting rod, the sealing ring is fixedly mounted at the joint of the compression rod and the rotating shaft, the piston is fixedly mounted at the top end of the right side of the compression rod, an air sealing ring A, an air sealing ring B and an oil sealingring are fixedly mounted on the outer ring of the piston, an air outlet pipe is fixedly mounted above the right side of the piston, and a water cooling cavity is formed in the outer side of the compression device in the circumferential direction. By installing the sealing ring, a sealing sleeve, the air sealing ring A, the air sealing ring B and the oil sealing ring, the sealing performance of theinterior of the compression device is ensured, and then the heat dissipation effect is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pneumatic mechanical devices, in particular to a water-cooled coal bed gas recovery compressor. Background technique [0002] In the normal production of oil fields and petrochemical enterprises, various devices discharge variable amounts of gas, oilfield gas and other gases, and these gases are recycled into the gas cabinet, and then enter the gas cabinet after compression and treatment. The combustible gas enters the medium-pressure fuel gas pipeline network, and then is sent to the combustion furnaces of each device as fuel; the excess gas is sent to the torch for combustion. [0003] Coalbed methane (coalbed) is commonly known as "gas". The main component of coalbed methane is simply methane, which is purer than methane in natural gas (also known as oil field gas). CBM exists in the coal seam and its surrounding rocks in the state of adsorption and dissociation. Its calorific value is 2 to 5 times t...

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Problems solved by technology

[0006] However, the device has the following disadvantages in use: 1. The device cannot ensure the sealing inside the compression cylinder. For dangerous gases such as coalbed methane, it is necessary to ensure the sealing inside the compression cylinder to ensure internal safety, so it needs to be improved. ; 2. The device cannot dissipate heat from the compression cylinder and the motor, and the heat dissipation effect is poor, so it needs to be improved

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