Hydraulic oil piston type natural gas sub-station compressor

Abstract

The invention discloses a hydraulic oil piston type natural gas sub-station compressor, which comprises a high-pressure oil pump (1), a pressure control valve (2), a pressure oil tank (3), a hydraulic reverse valve (4), a flow sensor (5), a bridge type valve bank (6), a gas compression cylinder tank group, a pressure sensor (9), a pressure relay (10), a high pressure gas storage cylinder (11), an automatic control system (12) and the like. The hydraulic oil piston type natural gas sub-station compressor can be abutted with a general natural gas transportation tanker without using a mechanical piston or a gas cylinder; and pressurized compression of natural gas is finished by using a circulating manner that pressure energy for air inlet of the natural gas and driving kinetic energy of a hydraulic system are alternatively subjected to air inlet, compression, high-pressure exhaust and switch in the gas compression tank. The natural gas sub-station compressor has the advantages of energy saving, environment friendliness, no friction, leakage or noise, slowness in temperature rise, high work efficiency and the like.

Description

Technical field: [0001] The invention belongs to the technical field of natural gas compression, in particular to a hydraulic oil-piston natural gas substation compressor used in a gas filling station. Background technique: [0002] The use and transportation of natural gas as an energy source is carried out in a high-density state. It takes a lot of kinetic energy to make natural gas reach a high-density state, and natural gas in a high-density state contains huge pressure energy. [0003] Natural gas sub-station refueling devices With the continuous progress and development of technology, there have been a variety of sub-station natural gas compressors or booster devices with different working principles and structures. They are roughly divided into three types: crankshaft piston natural gas compressors, hydraulic piston natural gas compressors, and hydraulic compressed natural gas filling devices. Its technical performance analysis is as follows: [0004] 1) Crank conne...

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Problems solved by technology

[0020] Compared with the three, the above-mentioned crank-connecting rod piston compressor and hydraulic piston natural gas compressor use ordinary natural gas transport tankers as gas source transport vehicles. The investment in station construction is relatively low, but the energy consumption is relatively high

The hydraulic compressed natural gas refueling device requires a special special natural gas transport tanker, which reduces energy consumption and requires high station construction investment

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