CN218032701U

CN218032701U - Combustion control system with gas leakage detection function

Info

Publication number: CN218032701U
Application number: CN202222146987.0U
Authority: CN
Inventors: 范德金; 黄佳钦; 胡乃成
Original assignee: Zhonglong Energy Technology Dongguan Co ltd
Current assignee: Zhonglong Energy Technology Dongguan Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-13
Anticipated expiration: 2032-08-16

Abstract

The utility model relates to a combustion system technical field, more specifically say, it relates to a take gas leak testing's combustion control system, and its technical scheme main points are: including the pipeline, the both ends of pipeline are gas input and gas output end respectively, and the pipeline is provided with leading valve and gas flow valve respectively at gas input and gas output end, and leading valve control gas is by getting into the pipeline outward, and gas flow valve control gas is followed the pipeline and is past export outward, and the pipeline has set gradually first relief valve, leak hunting pressure switch and second relief valve along gas direction of delivery, and first relief valve and second relief valve play the safety protection of preventing the leakage in the pipeline, the utility model discloses a take gas leak testing's combustion control system can in time discover and remove the problem that the gas leaked.

Description

Combustion control system with gas leakage detection function

Technical Field

The utility model belongs to the technical field of combustion system technique and specifically relates to a take gas leak testing's combustion control system.

Background

In many heating apparatuses, a heat transfer medium needs to be heated by burning fuel using a burner, some of which is fuel gas such as natural gas. The combustor needs to be controlled through the combustion control system when combusting the fuel gas, the combustion control system is controlled through the PLC control system, and the ignition time, the required combustion-supporting air quantity and the fuel gas quantity of the combustor can be accurately controlled through the combustion control system and the PLC control system.

In view of the above-mentioned related technologies, the inventor believes that a combustion control system has a risk of gas leakage, and if the problem of gas leakage cannot be found and eliminated in time, serious production accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

In order to discover and remove the problem of gas leakage in time, the application provides a take gas leakage detection's combustion control system.

The application provides a take combustion control system of gas leakage detection adopts following technical scheme:

the utility model provides a take gas leak testing's combustion control system, includes the pipeline, the both ends of pipeline are gas input end and gas output end respectively, the pipeline is provided with leading valve and gas flow valve respectively at gas input end and gas output end, leading valve control gas is by outer entering in the pipeline, gas flow valve control gas is followed toward outer output in the pipeline, the pipeline has set gradually first relief valve, leak hunting pressure switch and second relief valve along gas direction of delivery, first relief valve with the second relief valve is in play the safety protection of preventing leaking in the pipeline.

Through adopting above-mentioned technical scheme, when need detect the combustion control system and whether have the leakage condition, then need detect first relief valve and second relief valve and whether close tightly, during the detection, it is normally open to keep leading valve and gas flow valve, and close first relief valve and open the second relief valve, the purpose is that the gas that prevents first relief valve the place ahead passes through and the gas at evacuation first relief valve rear, then close the second relief valve, if leak hunting after the pressure switch still can detect gas pressure, then first relief valve exists the leakage condition. If the detection of first relief valve passes, then open first relief valve further, the purpose makes second relief valve the place ahead keep certain gas pressure, if the leak hunting pressure switch detects the gas pressure decline afterwards, then the second relief valve exists the leakage condition. If the leak detection pressure switch detects that the first safety valve or the second safety valve has the condition of leaking gas, the leak detection pressure switch automatically closes equipment to operate and gives an alarm for indication, so that the problem of gas leakage can be timely found and eliminated.

Preferably, the gas flow valve is connected with an electric actuator, and the gas flow valve is connected with the electric actuator through a linkage assembly.

Through adopting above-mentioned technical scheme, electric actuator drives the gas flow valve automatic start-stop.

Preferably, the gas input end of the pipeline is connected with a filter.

Through adopting above-mentioned technical scheme, the impurity in the gas can effectively be filtered to the filter for the gas that enters into the combustor through the pipeline is purer.

Preferably, a pressure regulating valve is arranged between the gas input end of the pipeline and the first safety valve.

Through adopting above-mentioned technical scheme, the air-vent valve is used for the operating pressure in the control line.

Preferably, a pressure gauge is arranged between the pressure regulating valve and the first safety valve.

Through adopting above-mentioned technical scheme, the manometer is used for observing the operating pressure in the pipeline.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the problem of gas leakage can be timely found and eliminated;

2. the electric actuator drives the gas flow valve to automatically open and close;

3. the filter can effectively filter the impurity in the gas for the gas that enters into the combustor through the pipeline is purer.

Drawings

FIG. 1 is an overall block diagram of a combustion control system in an embodiment of the present application;

fig. 2 is a flowchart of a leak detection routine of the combustion control system in the embodiment of the present application.

Description of reference numerals: 1. a pipeline; 11. a filter; 12. a pre-valve; 13. a pressure regulating valve; 14. a pressure gauge; 15. a first safety valve; 16. a leak detection pressure switch; 17. a second relief valve; 18. a gas flow valve; 19. an electric actuator; 2. a machine head; 21. a flue gas return pipe; 22. and a combustion-supporting air pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses take gas leak testing's combustion control system. Referring to fig. 1, take gas leak testing's combustion control system includes pipeline 1, and pipeline 1 is the U-shaped distribution for multistage pipe and pipeline 1, and the both ends of pipeline 1 are gas input end and gas output respectively, and the gas input end of pipeline 1 is used for docking the gas source, and the gas output of pipeline 1 is used for docking aircraft nose 2 of combustor to make in the gas accessible pipeline 1 in the gas source exports aircraft nose 2 of combustor. Pipeline 1 is provided with leading valve 12 and gas flow valve 18 respectively at gas input end and gas output end, and leading valve 12 is manual switch, can control in the gas gets into pipeline 1 by outer through opening leading valve 12, and the gas valve is automatic switch, and gas flow valve 18 control gas is followed pipeline 1 and is gone out outward, controls in the aircraft nose 2 that the gas got into the combustor promptly. Specifically, gas flow valve 18 is connected with electric actuator 19 and is connected through the linkage subassembly between gas flow valve 18 and the electric actuator 19, and electric actuator 19 drives gas flow valve 18 through the linkage subassembly and opens and close automatically.

Referring to fig. 1, the gas input end of pipeline 1 is connected with filter 11, and filter 11 can effectively filter the impurity in the gas for the gas that enters into the combustor through pipeline 1 is purer. A pressure regulating valve 13 is arranged between the gas input end of the pipeline 1 and the first safety valve 15, and the pressure regulating valve 13 is used for controlling the working pressure in the pipeline 1. A pressure gauge 14 is arranged between the pressure regulating valve 13 and the first safety valve 15, and the pressure gauge 14 is used for observing the working pressure in the pipeline 1. In addition, the head 2 of the burner is communicated with a flue gas return pipe 21 and a combustion-supporting air pipe 22 to control the fuel gas ratio and improve the combustion rate.

Referring to fig. 1 and fig. 2, pipeline 1 has set gradually first relief valve 15, leak detection pressure switch 16 and second relief valve 17 along the gas direction of delivery, and first relief valve 15 and second relief valve 17 are the solenoid valve, and first relief valve 15, second relief valve 17, leak detection pressure switch 16 and electric actuator 19 all control through the PLC control program, and wherein, first relief valve 15 and second relief valve 17 play the safety protection of preventing leaking in pipeline 1, and the implementation principle of a combustion control system who takes gas leakage detection of this application embodiment is: when the leakage condition of the combustion control system needs to be detected, whether the first safety valve 15 and the second safety valve 17 can be closed or not needs to be detected, during detection, the preposed valve 12 and the gas flow valve 18 are kept normally open, the first safety valve 15 is closed, and the second safety valve 17 is opened, so that the purpose is to prevent the gas in front of the first safety valve 15 from passing through and exhaust the gas behind the first safety valve 15, the second safety valve 17 is closed after exhausting for 1-2 seconds, then the leakage detection pressure switch 16 detects for 3 seconds, and if the leakage detection pressure switch 16 can still detect the gas pressure within 3 seconds, the leakage condition exists in the first safety valve 15. If the detection of the first safety valve 15 is passed, the first safety valve 15 is further opened in order to keep a certain gas pressure in front of the second safety valve 17, the detection pressure switch starts to detect for 3 seconds after the first safety valve 15 is opened for 3 seconds, and if the gas pressure is detected to drop by the leak detection pressure switch 16, the second safety valve 17 has a leak. If the leak detection pressure switch 16 detects that the first safety valve 15 or the second safety valve 17 has the condition of leaking fuel gas, the leak detection pressure switch 16 automatically closes the equipment operation and gives an alarm to indicate, so that the problem of fuel gas leakage can be timely found and eliminated.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a take gas leak testing's combustion control system which characterized in that: including pipeline (1), the both ends of pipeline (1) are gas input end and gas output end respectively, pipeline (1) is provided with leading valve (12) and gas flow valve (18) respectively at gas input end and gas output end, leading valve (12) control gas is by outer entering in pipeline (1), gas flow valve (18) control gas is followed toward outer output in pipeline (1), pipeline (1) has set gradually first relief valve (15), leak hunting pressure switch (16) and second relief valve (17) along gas direction of delivery, first relief valve (15) with second relief valve (17) are in pipeline (1) interior safety protection of preventing leaking.

2. The combustion control system with gas leakage detection of claim 1, characterized in that: the gas flow valve (18) is connected with an electric actuator (19) and the gas flow valve (18) is connected with the electric actuator (19) through a linkage assembly.

3. The combustion control system with gas leakage detection of claim 1, characterized in that: the gas input end of the pipeline (1) is connected with a filter (11).

4. The combustion control system with gas leakage detection of claim 1, characterized in that: a pressure regulating valve (13) is arranged between the gas input end of the pipeline (1) and the first safety valve (15).

5. The combustion control system with gas leakage detection of claim 4, characterized in that: a pressure gauge (14) is arranged between the pressure regulating valve (13) and the first safety valve (15).