Gas supply system with pressure stabilizing structure

Abstract

The utility model relates to a gas supply system with a pressure stabilizing structure, which comprises a compressor, a cooler and gas utilization equipment, normal-temperature feed gas is sequentially connected with the compressor and the cooler through a first pipeline, the cooler is connected with the gas utilization equipment through a second pipeline, and the gas utilization equipment is connected with the first pipeline through a third pipeline to form gas utilization circulation. The second pipeline is provided with a pressure stabilizing structure, the pressure stabilizing structure is composed of a first branch, a second branch, a third branch and an air supply tank, the first branch is directly connected with the third branch, the second branch is firstly connected to the air supply tank and then is connected to the third branch through the air supply tank, and pressure regulating valves are installed on the first branch, the second branch and the third branch. According to the gas supply system with the pressure stabilizing structure, the stability of the output pressure is guaranteed while the output gas amount is changed, namely the stability of the pressure of the second pipeline is guaranteed, and the constant-pressure output of the system is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial gas application and relates to a gas supply system with a pressure stabilizing structure. Background Art

[0002] Many industrial systems today have strict requirements on the stability of gas supply, and the amount of gas used by the terminal gas system during operation is not unchanged, which requires the gas supply system to ensure that the external output pressure remains unchanged while the gas supply changes, that is, it has an automatic pressure stabilization function. Usually, the compressor equipment itself has a certain adjustment range, but this adjustment range is relatively small, the response speed is slow, and frequent adjustments also have a certain impact on the service life of the equipment. Therefore, a system with the ability to automatically adjust the pressure is particularly necessary. For this reason, a gas supply system with a pressure stabilization structure is designed. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a simple and reasonable, practical and convenient gas supply system with a pressure-stabilizing structure, so as to ensure that the pressure of the system remains stable when the amount of gas output to the outside changes, and to continuously deliver a stable gas source to the terminal gas-using equipment.

[0004] The utility model is realized through the following technical scheme: an air supply system with a pressure-stabilizing structure, which includes a compressor, a cooler, and air-using equipment. Normal temperature raw gas is connected to the compressor and the cooler in sequence through a first pipeline, the cooler is connected to the air-using equipment through a second pipeline, and the air-using equipment is connected to the first pipeline through a third pipeline to form an air circulation. A pressure-stabilizing structure is provided on the second pipeline, and the pressure-stabilizing structure consists of a first branch, a second branch, a third branch, and an air supply tank, wherein the first branch is directly connected to the third branch, the second branch is first connected to the air supply tank, and then connected to the third branch by the air supply tank, and pressure regulating valves are respectively installed on the first branch, the second branch, and the third branch.

[0005] Preferably, the pressure regulating valve on the first branch is a first pressure regulating valve, the pressure regulating valve on the second branch is a second pressure regulating valve, and a third pressure regulating valve is provided on the third branch between the first branch and the gas supply tank, and the pressure is regulated by controlling the regulating valve to achieve a pressure stabilization effect.

[0006] Preferably, the second branch is provided with two pipes connected to the gas supply tank, and a second pressure regulating valve is installed on the second branch between the two pipes.

[0007] Preferably, the room temperature raw material gas is air, oxygen or nitrogen.

[0008] The beneficial effects of the utility model are as follows:

[0009] The gas supply system with a pressure-stabilizing structure designed by the utility model ensures the temperature of the output pressure while the output gas volume changes, ensuring the constant pressure output of the system. It can well ensure that the pressure of the system remains stable when the gas volume output to the outside changes, and continuously delivers a stable gas source to the terminal gas-using equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the process structure of the utility model. DETAILED DESCRIPTION

[0011] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0012] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "horizontal" and "vertical" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or component referred to must have a specific direction and therefore should not be understood as a limitation on the present invention.

[0013] The utility model will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a gas supply system with a pressure stabilizing structure includes a compressor 1, a cooler 2, and a gas-using device 3. A room-temperature raw gas 4 is connected to the compressor 1 and the cooler 2 in sequence through a first pipeline 5. The cooler 2 is connected to the gas-using device 3 through a second pipeline 6. The gas-using device 3 is connected to the first pipeline 5 through a third pipeline 8 to form a gas circulation. A pressure stabilizing structure is provided on the second pipeline 6. The pressure stabilizing structure consists of a first branch 9, a second branch 10, a third branch 11, and an air supply tank 12, wherein the first branch 9 is directly connected to the third branch 11, the second branch 10 is first connected to the air supply tank 12, and then connected to the third branch 11 by the air supply tank 12, and pressure regulating valves are respectively installed on the first branch 9, the second branch 10, and the third branch 11.

[0014] The pressure regulating valve on the first branch 9 is the first pressure regulating valve 13, the pressure regulating valve on the second branch 10 is the second pressure regulating valve 14, and a third pressure regulating valve 15 is provided on the third branch 11 between the first branch 10 and the gas supply tank 12, and the pressure stabilization effect is achieved by controlling the regulating valve to adjust the pressure. Two pipes 7 are provided on the second branch 10 to connect to the gas supply tank 12, and a second pressure regulating valve 14 is installed on the second branch 10 between the two pipes 7. The room temperature raw gas is air, oxygen, and nitrogen.

[0015] The working principle of the utility model is as follows:

[0016] During the system startup phase, low-pressure raw gas provides raw gas to the system through the first pipeline 5, and first enters the inlet of the compressor 1. The compressor 1 pressurizes the room-temperature raw gas 4 to the working pressure and then enters the gas-using equipment 3 through the second pipeline 6. The gas-using equipment 3 returns the used gas to the compressor inlet through the third pipeline 8, completing a cycle, and repeats this process until the system circulation gas volume reaches the design value and the startup ends; during the normal working phase, there will be a certain amount of gas loss during the operation of the gas-using equipment, so the low-pressure raw gas needs to be replenished to the system in real time during the normal working period of the system, and the replenishment volume is adjusted according to the loss;

[0017] When the outlet pressure of compressor 1 is higher than the design pressure and does not exceed 10%, the first pressure regulating valve 13 opens to regulate the outlet pressure of compressor 1;

[0018] When the outlet pressure of compressor 1 is higher than 10% of the design pressure, the second pressure regulating valve 14 opens to regulate the outlet pressure of compressor 1;

[0019] When the outlet pressure of the compressor 1 is lower than the design pressure, the third pressure regulating valve 15 opens to regulate the outlet pressure of the compressor 1 . Example

[0020] In this embodiment, the raw gas flow rate is 500Nm3 / h and the pressure is 0.1Mpa. The normal operation of the system is a flow rate of 3000Nm3 / h (that is, the normal gas consumption of the equipment is 3000Nm3 / h) and a pressure of 0.5Mpa. Start-up phase: 0.1Mpa room temperature raw gas is pressurized to 0.5Mpa by the compressor and then enters the cooler for cooling, and then is transported to the gas-using equipment 3 through the second pipeline 6. The gas-using equipment 3 reduces the pressure of the used gas to 0.1Mpa, and then returns to the inlet of the compressor 1 through the third pipeline 8 to complete a cycle, and repeats this process until the system circulation gas volume reaches the set 3000Nm3 / h; during the normal working phase, there will be a gas loss of 50Nm3 / h during the operation of the gas-using equipment 3, so the low-pressure raw gas needs to be supplemented to the system through the first pipeline 5 during the normal working of the system, and the supplementary gas volume is 50Nm3 / h; when the gas consumption of the gas-using equipment 3 is reduced, the gas volume at the outlet of the compressor 1 cannot be fully output, and a pressure holding phenomenon will occur. When the outlet pressure of the compressor 1 is higher than the design pressure and does not exceed 0.525 Mpa, the first pressure regulating valve 13 is opened, and the outlet flow of the compressor 1 is refluxed and discharged through the first branch 9 to reduce the outlet pressure and achieve the effect of pressure stabilization; because the range of the first pressure regulating valve 13 is limited, when the outlet pressure of the compressor is higher than 0.54 of the design pressure Mpa, the second pressure regulating valve 14 opens to discharge the compressor outlet flow to the air supply tank, stores the excess gas, and at the same time reduces the compressor 1 outlet pressure to achieve a pressure stabilization effect; conversely, when the gas consumption of the gas-consuming equipment increases and the compressor 1 outlet pressure is lower than 0.5 Mpa, the third pressure regulating valve 15 opens to supplement the compressor inlet gas volume, increase the compressor outlet pressure, and achieve a pressure stabilization effect.

[0021] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A gas supply system with a pressure stabilizing structure, comprising a compressor, a cooler, and a gas-using device, wherein the room temperature raw gas is connected to the compressor and the cooler in sequence through a first pipeline, the cooler is connected to the gas-using device through a second pipeline, and the gas-using device is connected to the first pipeline through a third pipeline to form a gas circulation, characterized in that: The second pipeline is provided with a pressure stabilizing structure, which consists of a first branch, a second branch, a third branch, and an air supply tank, wherein the first branch is directly connected to the third branch, the second branch is first connected to the air supply tank, and then connected to the third branch by the air supply tank, and pressure regulating valves are respectively installed on the first branch, the second branch, and the third branch.

2. The gas supply system with a pressure stabilizing structure according to claim 1, characterized in that: The pressure regulating valve on the first branch is the first pressure regulating valve, the pressure regulating valve on the second branch is the second pressure regulating valve, and a third pressure regulating valve is provided on the third branch between the first branch and the air supply tank. The pressure is adjusted by controlling the regulating valve to achieve a pressure stabilization effect.

3. The gas supply system with a pressure stabilizing structure according to claim 2, characterized in that: The second branch road is provided with two pipelines connected to the air supply tank, and a second pressure regulating valve is installed on the second branch road between the two pipelines.

4. The gas supply system with a pressure stabilizing structure according to claim 1, characterized in that: The room temperature raw material gas is air, oxygen or nitrogen.

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