RU137660U1 - DEVICE FOR CONTROL OF TORCH AVAILABILITY - Google Patents

Abstract

A device for controlling the presence of a torch in installations for burning combustible gas emissions, comprising a combustion chamber, at the outlet of which a nozzle is made, an impulse pipe connected to a fuel supply pipe, a differential pressure switch, an electric candle installed in a pipeline for supplying an ignition mixture to the combustion chamber, characterized in that inside the combustion chamber between the outlet of the ignition mixture from the pipeline and the nozzle is installed an annular diaphragm, the outer diameter of which is equal to the inner diameter of the combustion chamber.

Description

The utility model relates to devices for controlling the presence of a torch in installations for burning emergency, continuous and periodic emissions of combustible gases and can be used in the oil, chemical and other industries.

A device for controlling the torch (patent RU No. 56661 U1 IPC 7 F23N 5/24, publ. 09/10/2006), comprising a combustion chamber provided with an outlet nozzle, an impulse tube connected to the fuel supply pipe, differential pressure switch and ignition feed pipe mixtures with electric light. Fuel through the pipeline enters the combustion chamber and is ignited by the ignition mixture from the pipeline of the ignition mixture. The ignition mixture is ignited by an electric candle. As a result of fuel combustion, combustion products are formed, the volume of which increases several times, therefore, the pressure in the combustion chamber increases. Excessive pressure on the impulse tube is transmitted to the differential pressure switch (signal about the presence of a torch). When the flame goes out, the pressure in the combustion chamber decreases, and the differential pressure switch detects its extinction. The known device has a narrow range of pressure on the fuel mixture.

A device for controlling the torch (patent RU No. 81562 U1 IPC 7 F23N 5/24, published on March 20, 2009) is closest to the claimed device and is taken as a prototype containing a combustion chamber, the output end of which is equipped with a nozzle, a pulse tube connected to fuel supply line, differential pressure switch, ignition mixture supply line with electric light. A pipe with an oblique cut is installed inside the combustion chamber, which is a continuation of the pipeline of the ignition mixture. Fuel through the pipeline enters the combustion chamber and is ignited by the ignition mixture from the pipeline of the ignition mixture. The ignition mixture is ignited by an electric candle. As a result of the increase in the volume of combustion products, the pressure in the combustion chamber increases. Excessive pressure is transmitted through the impulse tube to the differential pressure switch, and a signal indicating the presence of a torch appears. When the flame goes out, the pressure in the combustion chamber decreases, and the differential pressure switch detects its extinction. Selecting the diameter of the nozzle, you can set the desired signal size. The pipe with an oblique cut together with the gas flowing out of the ignition mixture form a combustion stabilizer, the presence of which in the combustion chamber allows you to expand the range of the combustion chamber. However, the known device is not sufficiently reliable in operation and has a small service life, which is a consequence of the burnout of an oblique cut of the nozzle of the ignition mixture located in the flame zone and poorly cooled.

The technical result, which the proposed utility model is aimed at, is to increase the reliability and service life of the torch control device.

The technical result is achieved by the fact that in the device for controlling the presence of a torch in installations for burning combustible gas emissions containing a combustion chamber, the outlet of which has a nozzle, an impulse tube connected to the fuel supply pipe, a differential pressure switch, an electric candle installed in the ignition supply pipe mixture into the combustion chamber, it is new that inside the combustion chamber between the outlet of the ignition mixture from the pipeline and the nozzle is installed an annular diaphragm whose outer diameter is ene inner diameter of the combustion chamber.

The figure shows a diagram of a device for controlling the presence of a torch.

A device for controlling the presence of a torch in installations for burning combustible gas emissions contains a combustion chamber 1, the outlet of which has a nozzle 2, an impulse tube 3 connected to the fuel supply pipe 4, a differential pressure switch 5, an electric light 7 installed in the pipeline 6 for supplying the ignition mixture in the combustion chamber 1, an annular diaphragm 9 mounted inside the combustion chamber 1 between the outlet 8 for supplying the ignition mixture from the pipeline 6 and the nozzle 2. The outer diameter of the annular diaphragm 9 is equal to the inner diameter of the combustion chamber 1 that provides tight contact of the annular diaphragm 9 with the inner surface of the combustion chamber 1.

The device operates as follows.

Fuel through line 4 enters the combustion chamber 1 and is ignited by the ignition mixture from the ignition mixture supply line 6. The ignition mixture is ignited by the electric light 7. As a result of the increase in the volume of the combustion products, the pressure in the combustion chamber 1 increases. Excessive pressure through the impulse tube 3 is transmitted to the differential pressure switch 5, and a flame signal appears. When the flame goes out, the pressure in the combustion chamber 1 decreases, and the differential pressure switch 5 fixes its extinction. Selecting the diameter of the nozzle 2, you can set the desired signal value. Between the annular diaphragm 9 and the nozzle 2, a circulation flow is formed, which reliably stabilizes the flame in front of the nozzle 2, which increases the reliability of the device.

Due to the small radial size of the ring of the diaphragm 9 and its tight contact with the inner surface of the combustion chamber 1, good cooling of the annular diaphragm 9 is provided due to heat transfer from it through the walls of the combustion chamber 1 to the surrounding atmosphere. As a result, efficient cooling of the annular diaphragm 9 located in the flame zone prevents its burning and, therefore, increases the operating life of the proposed device.

Claims (1)

A device for controlling the presence of a torch in installations for burning combustible gas emissions, comprising a combustion chamber, at the outlet of which a nozzle is made, an impulse pipe connected to a fuel supply pipe, a differential pressure switch, an electric candle installed in a pipeline for supplying an ignition mixture to the combustion chamber, characterized in that inside the combustion chamber between the outlet of the ignition mixture from the pipeline and the nozzle is installed an annular diaphragm, the outer diameter of which is equal to the inner diameter of the combustion chamber.

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