CN211820898U - Safety pressure relief device for cold clean gas - Google Patents

Abstract

The utility model discloses a cold clean coal gas safety pressure relief device, the device select suitable position to add safe emission pipe (2) on cold clean coal gas is responsible for (1), safe emission pipe (2) are fixed on guide bracket (6), increase a sampling tube (3) at safe emission pipe (2) root, install sampling valve (4) on sampling tube (3) for sample analysis when replacement or supplying gas, safe emission pipe (2) are by supreme manual control valve (5), pneumatic switch valve (7), rain-proof cap (8) of arranging respectively down. The utility model discloses simple structure, construction convenience, investment saving, convenient operation, the safe risk that avoids cold clean coal gas conveying house steward that can be fine because urgent operation or the upstream and downstream communication of downstream process are improper to be brought provides the guarantee for the safety and stability operation of enterprise.

Description

Safety pressure relief device for cold clean gas

Technical Field

The utility model relates to a two-section furnace cold clean gas station and low reaches production process, a cold clean gas safety pressure relief device of specific design.

Background

The two-stage furnace cooling gas purification station is widely applied to the industries of ceramics, chemical engineering, glass, graphite carbon, refractory materials, alumina, magnesium oxide and the like because of low production cost and continuous and perfect safety and environmental protection measures. The main process is that raw material lump coal enters a two-section type gas producer through a lifting structure and a coal feeding mechanism, upper and lower sections of coal gas are generated after passing through a dry distillation section and a gasification section in the producer, the upper and lower sections of coal gas enter a coal gas low-pressure main pipe after being subjected to tar removal, dust removal, cooling, dehydration and other treatments, and the coal gas in the coal gas low-pressure main pipe enters a downstream process after being pressurized by a pressurizer to be used as fuel.

When abnormal conditions such as equipment or personal injury, control system failure, emergency water and power cut and gas cut occur in the downstream coal gas using process, the emergency adjustment or cut-off of the coal gas conveying main pipe can occur, so that the coal gas pressure is greatly fluctuated. Most production enterprises maintain the pressure stability by manually adjusting the gas flow or manually adjusting the dispersion amount, so as to avoid the overpressure operation of the gas conveying main pipe as much as possible. But it is easy to bring safety risks if there is a trouble with the passage between persons or if the manual operation is delayed.

The coal gas delivery main pipe at the outlet of the coal gas pressurizer is generally additionally provided with a coal gas diffusing pipe, the height of the coal gas diffusing pipe and the distance between the coal gas diffusing pipe and surrounding buildings need to meet related requirements in the petrochemical industry enterprise design fire standard (GB 50160-2018), but the purpose of automatic safe pressure relief cannot be achieved.

Disclosure of Invention

The utility model aims at providing a cold clean coal gas safety pressure relief device to solve the gas transportation house steward because the pressure that unusual reason appears surpasss and can not automatic safe pressure relief's technical problem.

The technical scheme of the utility model: the utility model provides a cold net coal gas safety pressure relief device, the device adds safe bleeder on coal gas conveying main pipe, and the position of adding is: is higher than the platform by more than 10m or more than 3.5m of the top of the building, and is inclined upwards by 45 degrees beyond the level of 10m of the discharge port of the safety diffusing pipe^oNo platform or building is arranged within; the safety diffusing pipe is fixed on the guide support, and a sample is added to the root of the safety diffusing pipeThe safety diffusion pipe is provided with a manual regulating valve, a pneumatic switch valve and a rain-proof cap from bottom to top.

The safe pressure relief device for the cold clean gas is characterized in that a safe relief pipe is additionally arranged at the right upper part of a gas conveying main pipe, and the connection mode is welding.

The sampling tube is connected with the sampling valve in a flange manner.

The manual regulating valve is vertically installed, and the pneumatic switch valve is horizontally installed.

The guide support is a door-shaped guide support.

The utility model discloses a theory of operation: the gas at the outlet of the cold clean gas pressurizer flows in the gas conveying main pipe at a certain speed, a certain flow rate and a certain pressure of about 5-10 KPa. In the normal production process, the sampling valve and the pneumatic switch valve are in a closed state, and the manual regulating valve is in an open state. When abnormal conditions such as equipment or personal injury, control system failure, emergency water and gas cut-off and power cut-off and the like occur in the downstream coal gas using process, main control personnel can perform emergency adjustment or cut-off on a coal gas conveying main pipe, so that the coal gas pressure is greatly increased, pressure adjustment delay of two sections of furnace cold clean gas stations can possibly cause overpressure in the coal gas conveying pipe, when the pressure reaches about 15KPa, a pneumatic switch valve is automatically opened for pressure relief, and the pneumatic switch valve is automatically closed after the pressure is reduced, so that safety risks such as coal gas water seal breakthrough, static electricity and the like caused by the overpressure of the coal gas are avoided. The gas sampling valve and the sampling tube are used for sampling during pipeline replacement or gas supply, and the pipeline replacement condition and the quality of conveyed gas are judged according to the sampling analysis result. The manual regulating valve is used for overhauling the safety pressure relief device, and the valve is closed during overhauling to ensure the safety and reliability of the overhauling process.

Adopt the utility model discloses can avoid cold clean coal gas transportation house steward because the emergency operation of downstream process perhaps upstream and downstream link up the improper safe risk that brings, provide the guarantee for the safety and stability operation of enterprise. Simultaneously the utility model discloses convenient operation, practicality are strong, use the more ordinary common material, and processing and site operation are convenient, low cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1 is the coal gas conveying house steward, 2 is safe diffusing pipe, 3 is the sampling tube, 4 is the sample valve, 5 is manual control valve, 6 is the guide bracket, 7 is pneumatic switch valve, 8 is rain-proof cap.

Detailed Description

A safe pressure relief device for cold clean gas is characterized in that a safe diffusion pipe 2 is additionally arranged at the right upper part of a gas conveying main pipe 1 in a welding mode, the safe diffusion pipe is higher than a platform by more than 10m or more than 3.5m of the top of a building, and meanwhile, the discharge port of the safe diffusion pipe is inclined upwards by 45 meters beyond 10m^oNo platform or building is arranged within; the safe diffusion pipe 2 is fixed on the guide support 6, and the pipe diameter of the safe diffusion pipe 2 is determined according to the pipe diameter of the gas conveying main pipe 1 and is generally about DN 100. The root of the safety diffusing pipe 2 is additionally provided with a sampling pipe 3, the pipe diameter is DN15, a sampling valve 4 is arranged on the sampling pipe 3, and the valve and the sampling pipe are connected in a flange manner. The safety diffusing pipe is provided with a manual regulating valve 5 and a pneumatic switch valve 7 from bottom to top respectively, the manual regulating valve 5 is vertically arranged, and the pneumatic switch valve 7 is horizontally arranged.

Claims (5)

1. The utility model provides a cold net coal gas safety pressure relief device which characterized in that the device adds safe bleeder (2) on coal gas conveying house steward (1), and the position of addding is: the height is more than 10m above the platform or more than 3.5m above the top of the building, and no platform or building is arranged in the range of inclined upward by 45 degrees beyond the horizontal 10m of the discharge port of the safety diffusing pipe; safe pipe (2) of diffusing is fixed on guide bracket (6), increases a sampling tube (3) at safe pipe (2) root of diffusing, installs sample valve (4) on sampling tube (3) for sample analysis when replacement or supplying gas, safe pipe (2) of diffusing are by supreme manual control valve (5), pneumatic switch valve (7), rain-proof cap (8) of arranging respectively down.

2. The safe pressure relief device for cold clean gas as claimed in claim 1, wherein the safe relief pipe (2) is added on the upper part of the gas transmission main pipe (1), and the connection mode is welding.

3. The safe pressure relief device for cold clean gas as claimed in claim 1, wherein the connection mode of the sampling tube (3) and the sampling valve (4) is flange connection.

4. The safe pressure relief device for cold clean gas as claimed in claim 1, wherein said manual regulating valve (5) is installed vertically, and said pneumatic switch valve (7) is installed horizontally.

5. The safety pressure relief device for cold clean gas as claimed in claim 1, wherein said guide bracket (6) is a gate-type guide bracket.

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