Multi-stage air pressure regulator

Abstract

The present invention discloses a multi-stage air pressure regulator which comprises a rack, connecting rods are symmetrically and fixedly connected to the two sides of the rack, an air inlet cavity is fixedly connected to the ends, away from the rack, of the two connecting rods, an air inlet pipe is fixedly connected to one end of the air inlet cavity, and branch exhaust pipes are fixedly connected to the top of the air inlet cavity; a three-way angle head is fixedly connected between the two branch exhaust pipes, a main exhaust pipe is fixedly connected to the end, away from the branch exhaust pipes, of the three-way angle head, an air pressure selecting device is fixedly connected to one side of the air inlet cavity, and a first pressure adjusting device is fixedly connected to the middle of the top of the rack; and the pressure of natural gas added into the device is measured through the gas pressure selecting device, the device is prevented from being damaged due to the fact that the gas pressure is too large, the pressure bearing range of the first pressure adjusting device and the pressure bearing range of the second pressure adjusting device are adjusted, the natural gas can safely enter the main exhaust pipe through the branch exhaust pipes, and the device is protected.

Description

technical field [0001] The invention relates to the technical field of air pressure regulators, in particular to a multi-stage air pressure regulator. Background technique [0002] In the process of natural gas production, people transport natural gas from the ground to the surface through pipelines through self-spraying. However, because the pressure of gas wells is generally high and natural gas is a flammable and explosive gas, the pressure bearing capacity and sealing of the gas production wellhead device will be affected. The performance is much higher than the requirements for oil production wellhead devices, but the existing devices are to enhance the stability of the device by increasing the strength of the device, which has a high cost, and with the increase of time, for some high-strength When the air pressure impacts the device, it will cause damage to the device. [0003] To this end, we propose a multi-stage gas pressure regulator. Contents of the invention ...

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Problems solved by technology

[0002] In the process of natural gas production, people transport natural gas from the ground to the surface through pipelines through self-spraying. However, because the pressure of gas wells is generally high and natural gas is a flammable and explosive gas, the pressure bearing capacity and sealing of the gas production wellhead device will be affected

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