Natural gas incandescent light ignition combustion device and using method

Abstract

The invention relates to the field of ignition combustion devices, in particular to a natural gas incandescent light ignition combustion device and a using method. The device comprises a gas supply pipe, a first connecting plate, a mixed combustion cylinder, a combustion spray pipe, a second connecting plate, a flame stabilizer, an L-shaped ignition rod and a protective pipe. The upper end of the gas supply pipe is connected with the lower end of the mixed combustion cylinder through a first connecting plate; the upper end of the mixed combustion cylinder is connected with the lower end of the combustion spray pipe, the upper end of the fuel spray pipe is connected with the lower end of the flame stabilizer through a second connecting plate, a protective pipe is connected with the middle of the mixed combustion cylinder, and an ignition head of the L-shaped ignition rod is connected with the protective pipe. The dual functions of the incandescent light and the ignition cylinder can be achieved, the structure is simple, the number of air supply pipelines is small, wind resistance is low, and cost is low; through the mixed combustion barrel, the L-shaped ignition rod and the combustion spray pipe, the minimum gas consumption for stable combustion is reduced by 70% or above compared with that of a traditional incandescent light; the L-shaped ignition rod is arranged at the position far away from an ignition source, the working environment temperature is low, stability is good, and the service life can be prolonged by 3-5 times.

Description

Technical Field

[0001] The present invention relates to the field of ignition combustion devices, and particularly to a natural gas pilot light ignition combustion device and a usage method thereof. Background Art

[0002] The natural gas directly produced from oil and gas wells generally contains toxic gases such as hydrogen sulfide. Direct emission causes serious environmental pollution, affects the physical health of on-site test production personnel, and even endangers their lives. Moreover, its greenhouse effect is dozens of times that of carbon dioxide, and it needs to be incinerated by a high-altitude flare before environmental protection emission can be carried out.

[0003] In order to ensure that the high-altitude flare system can incinerate combustible gases in a timely, efficient, and reliable manner, generally 1 - 6 groups of pilot tubes and pilot lights are installed around the main burner of the flare. Each pilot tube or pilot light requires a gas supply pipeline to provide fuel for it, and these gas supply pipes are generally arranged side by side with the flare body. The deficiencies of the existing structure are as follows: First, the pipeline and control system of the flare system are complex and the manufacturing cost is high; Second, the wind resistance of the flare system is increased, its stability becomes poor, and there are potential safety hazards.

[0004] Therefore, there is an urgent need to provide a natural gas pilot light ignition combustion device and a usage method thereof, which can meet the requirements of simple pipeline control system, low manufacturing cost, and high stability compared with the existing technology. Summary of the Invention

[0005] In order to overcome the problems existing in the prior art, the purpose of the present invention is to provide a natural gas pilot light ignition combustion device and a usage method thereof.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A natural gas pilot light ignition combustion device includes a gas supply pipe, a first connecting plate, a mixing combustion cylinder, a combustion nozzle, a second connecting plate, a flame stabilizer, an L-shaped ignition rod, and a protection tube. The upper end of the gas supply pipe is connected to the lower end of the mixing combustion cylinder through the first connecting plate; the upper end of the mixing combustion cylinder is connected to the lower end of the combustion nozzle, the upper end of the fuel nozzle is connected to the lower end of the flame stabilizer through the second connecting plate, the protection tube is connected to the middle of the mixing combustion cylinder, and the L-shaped ignition rod is connected to the protection tube.

[0007] The present invention is further configured as: The connection angle between the upper end of the mixing combustion cylinder and the combustion nozzle is set to 0 - 45°, preferably 10 - 30°.

[0008] The present invention is further configured as: The natural gas pilot light ignition combustion device further includes a connecting flange, the connecting flange is connected to the lower end of the gas supply pipe, and the axes of the connecting flange, the gas supply pipe, the first connecting plate, and the mixing combustion cylinder coincide.

[0009] The present invention is further configured such that the mixing combustion cylinder is welded to the combustion nozzle, and the mixing combustion pipe has the same diameter as the combustion nozzle.

[0010] The present invention is further configured such that the inner diameter of the flame stabilizer is larger than that of the combustion nozzle, and the inner diameter of the mixing combustion cylinder is larger than the outer diameter of the port of the gas supply pipe.

[0011] The present invention is further configured such that the pipeline of the natural gas pilot burner from the connecting flange to the flame stabilizer is set as an unobstructed passage.

[0012] The present invention is further configured such that the protective pipe is welded to the mixing combustion cylinder, the axis of the protective pipe is perpendicular to the axis of the mixing combustion cylinder, and the inner wall of the protective pipe is communicated with the inner wall of the mixing combustion cylinder.

[0013] The present invention is further configured such that the distance from the axis of the protective pipe to the top end of the combustion nozzle is set to be 400 - 1500 mm.

[0014] The present invention is further configured such that a compression bolt is provided on the protective pipe, and the axis of the compression bolt is perpendicular to the protective pipe.

[0015] The present invention is further configured such that the L-shaped ignition rod includes an ignition head and a long rod, the ignition head passes through the protective pipe and extends into the inner wall of the mixing combustion cylinder, and the extended length is 2 - 15 mm.

[0016] The present invention is further configured such that an ignition cable connector is provided at the bottom end of the long rod of the L-shaped ignition rod.

[0017] The present invention is further configured such that the natural gas pilot burner further includes an ignition rod bracket, one end of the ignition rod bracket is provided on the outer wall of the gas supply pipe, and the other end is connected to the L-shaped ignition rod.

[0018] The present invention is further configured such that the ignition rod bracket is arranged in the same direction as the protective pipe.

[0019] The present invention is further configured such that the materials of the gas supply pipe, the connecting flange, the connecting plate, the mixing combustion cylinder, the flame stabilizer, the combustion nozzle, the protective pipe, the compression bolt, the ignition cable connector and the ignition rod bracket are austenitic stainless steel, preferably S310 and S304.

[0020] The present invention also provides a method for using a natural gas pilot burner, which is applicable to the above-mentioned natural gas pilot burner; the method includes the following steps:

[0021] S1: Connect the natural gas pipeline to the gas supply pipe through the connecting flange, natural gas enters the gas supply pipe, and is introduced into the mixing combustion cylinder under subsequent pressure;

[0022] S2: The ignition cable is powered on, and the igniter head of the L-shaped ignition rod ignites the natural gas in the mixing combustion cylinder. The flame enters the flame stabilizer through the combustion nozzle under the subsequent natural gas pressure;

[0023] S3: The flame uses the oxygen entering through the small holes of the flame stabilizer for combustion support and is protected by the flame stabilizer at the same time;

[0024] S4: After the flame is stabilized, the ignition cable is powered off. The gas source can continue to supply gas to the gas supply pipe to realize the function of the pilot light, or stop supplying gas after ignition to realize the function of the ignition cylinder.

[0025] In summary, the beneficial effects of the above technical solutions of the present invention are as follows:

[0026] (1) The present invention realizes the dual functions of the pilot light and the ignition cylinder through a single structure, with a simple structure, fewer gas supply pipelines, low wind resistance, low cost, high stability, and no safety hazards.

[0027] (2) Through the specially designed mixing combustion cylinder, L-shaped ignition rod and combustion nozzle, the present invention reduces the minimum gas consumption for stable combustion by more than 70% compared with the traditional pilot light.

[0028] (3) The present invention sets the L-shaped ignition rod at a position far from the ignition source, so that the working environment temperature of the L-shaped ignition rod is low, the stability is good, and the service life is extended by 3 to 5 times. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 It is a schematic structural diagram of the natural gas pilot light ignition burner of the present invention.

[0031] Figure 2 It is a flow chart of the usage method of the natural gas pilot light ignition burner of the present invention.

[0032] In the drawings, the list of components represented by each reference numeral is as follows:

[0033] 1. Gas supply pipe; 1-1. Connecting flange; 1-2. First connecting plate; 2. Mixing combustion cylinder; 2-1. Protective pipe; 3. Flame stabilizer; 3-4. Second connecting plate; 4. Combustion nozzle; 5. Compression bolt; 6. L-shaped ignition rod; 6-1. Ignition cable connector; 7. Ignition rod bracket. Detailed Embodiments

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in the present invention, other similar embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for illustration rather than limitation of the present invention.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0036] Embodiment 1:

[0037] As Figure 1 shown, it is a preferred embodiment of the present invention. A pilot ignition combustion device for a natural gas long - light includes a gas supply pipe 1, a first connecting plate 1 - 2, a mixing combustion cylinder 2, a combustion nozzle 4, a second connecting plate 3 - 4, a flame stabilizer 3, an L - shaped ignition rod 6, and a protection pipe 2 - 1. The upper end of the gas supply pipe 1 is connected to the lower end of the mixing combustion cylinder 2 through the first connecting plate 1 - 2; the upper end of the mixing combustion cylinder 2 is connected to the lower end of the combustion nozzle 4, the upper end of the fuel nozzle is connected to the lower end of the flame stabilizer 3 through the second connecting plate 3 - 4, the protection pipe 2 - 1 is connected to the middle part of the mixing combustion cylinder 2, and the ignition head of the L - shaped ignition rod 6 is connected to the protection pipe 2 - 1.

[0038] The connection angle α between the upper end of the mixing combustion cylinder 2 and the combustion nozzle 4 is set to 10 - 30°. The pilot ignition combustion device for the natural gas long - light further includes a connecting flange 1 - 1, the connecting flange 1 - 1 is connected to the lower end of the gas supply pipe 1, and the axes of the connecting flange 1 - 1, the gas supply pipe 1, the first connecting plate 1 - 2, and the mixing combustion cylinder 2 coincide.

[0039] The mixing combustion cylinder 2 is welded to the combustion nozzle 4, and the mixing combustion cylinder and the combustion nozzle 4 have the same pipe diameter. The inner diameter of the flame stabilizer 3 is larger than that of the combustion nozzle 4, and the inner diameter of the mixing combustion cylinder 2 is larger than the outer diameter of the port of the gas supply pipe 1. The pipeline of the pilot ignition combustion device for the natural gas long - light from the connecting flange 1 - 1 to the flame stabilizer 3 is set as an unobstructed passage.

[0040] The protection pipe 2 - 1 is welded to the mixing combustion cylinder 2, the axis of the protection pipe 2 - 1 is perpendicular to the axis of the mixing combustion cylinder 2, and the inner wall of the protection pipe 2 - 1 is communicated with the inner wall of the mixing combustion cylinder 2. The distance L2 from the axis of the protection pipe 2 - 1 to the top of the combustion nozzle 4 is set to 400 - 1500 mm. A pressing bolt 5 is arranged on the protection pipe 2 - 1, and the axis of the pressing bolt 5 is perpendicular to the protection pipe 2 - 1.

[0041] The length L1 of the ignition head of the L-shaped ignition rod 6 passing through the protective tube 2-1 and extending into the inner wall of the mixing combustion cylinder 2 is 2 - 15 mm. The long rod end of the L-shaped ignition rod 6 is provided with an ignition cable connector 6-1.

[0042] The natural gas pilot burner combustion device further includes an ignition rod bracket 7. One end of the ignition rod bracket 7 is arranged on the outer wall of the gas supply pipe 1, and the other end is connected to the L-shaped ignition rod 6. The ignition rod bracket 7 is arranged in the same direction as the protective tube 2-1.

[0043] The materials of the gas supply pipe 1, connecting flange 1-1, connecting plate, mixing combustion cylinder 2, flame stabilizer 3, combustion nozzle 4, protective tube 2-1, compression bolt 5, ignition cable connector 6-1 and ignition rod bracket 7 are austenitic stainless steel, preferably S310 and S304.

[0044] Embodiment 2:

[0045] As Figure 2 shown, the present invention further includes a using method of a natural gas pilot burner combustion device, which is applicable to the above-mentioned natural gas pilot burner combustion device, and includes the following steps:

[0046] S1: Connect the natural gas pipeline to the gas supply pipe 1 through the connecting flange 1-1. Natural gas enters the gas supply pipe 1 and is introduced into the mixing combustion cylinder 2 under subsequent pressure.

[0047] S2: The ignition cable is electrified, and the ignition head of the L-shaped ignition rod 6 ignites the natural gas in the mixing combustion cylinder 2. The flame enters the flame stabilizer 3 through the combustion nozzle 4 under the subsequent natural gas pressure.

[0048] S3: The flame uses the oxygen entering from the small holes of the flame stabilizer 3 for combustion assistance and is protected by the flame stabilizer 3 at the same time.

[0049] S4: After the flame is stabilized, the ignition cable is powered off. The gas source can continue to supply gas to the gas supply pipe 1 to realize the long-burning lamp function or stop supplying gas after ignition to realize the ignition cylinder function.

[0050] In summary, the present invention provides a natural gas pilot burner and its using method, which can improve the problems in the prior art, such as the complex pipeline and control system of the torch system, high manufacturing cost; large wind resistance, poor stability and potential safety hazards in the torch system; more gas consumption and shorter service life of the ignition head.

[0051] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A pilot combustion device for a natural gas pilot light, characterized in that It includes an air supply pipe, a first connecting plate, a mixing combustion cylinder, a combustion nozzle, a second connecting plate, a flame stabilizer, an L-shaped ignition rod and a protecting pipe; the upper end of the air supply pipe is connected to the lower end of the mixing combustion cylinder through the first connecting plate; the upper end of the mixing combustion cylinder is connected to the lower end of the combustion nozzle, the upper end of the fuel nozzle is connected to the lower end of the flame stabilizer through the second connecting plate, the protecting pipe is connected to the middle part of the mixing combustion cylinder, and the L-shaped ignition rod is connected to the protecting pipe.

2. The pilot light combustion device for natural gas long-burning lamp according to claim 1, characterized in that, The connection angle between the upper end of the mixing combustion cylinder and the combustion nozzle is set to 0 - 45°.

3. The igniting and burning device for natural gas pilot light according to claim 1, characterized in that, The natural gas pilot burner further includes a connecting flange, the connecting flange is connected to the lower end of the air supply pipe, and the axes of the connecting flange, the air supply pipe, the first connecting plate and the mixing combustion cylinder coincide.

4. A kind of ignition and combustion device for natural gas pilot lights according to claim 1, characterized in that, The mixing combustion cylinder is connected to the combustion nozzle by welding, and the mixing combustion pipe and the combustion nozzle have the same pipe diameter.

5. A kind of ignition and combustion device for natural gas pilot lights according to claim 1, characterized in that, The inner diameter of the flame stabilizer is larger than that of the combustion nozzle, and the inner diameter of the mixing combustion cylinder is larger than the outer diameter of the port of the air supply pipe.

6. A natural gas pilot light ignition and combustion device according to claim 3, characterized in that, The pipeline of the natural gas pilot burner from the connecting flange to the flame stabilizer is set as an unobstructed passage.

7. A pilot combustion device for a natural gas long-burning lamp according to claim 1, characterized in that, The protecting pipe is connected to the mixing combustion cylinder by welding, the axis of the protecting pipe is perpendicular to the axis of the mixing combustion cylinder, and the inner wall of the protecting pipe is communicated with the inner wall of the mixing combustion cylinder.

8. A pilot light combustion device for a natural gas long-burning lamp according to claim 1, characterized in that, The distance from the axis of the protecting pipe to the top end of the combustion nozzle is set to 400 - 1500 mm.

9. The igniting and burning device for a natural gas pilot light according to claim 1, characterized in that, A compression bolt is arranged on the protecting pipe, and the axis of the compression bolt is perpendicular to the protecting pipe.

10. The igniting and burning device for the natural gas pilot light according to claim 1, characterized in that, The L-shaped ignition rod includes an ignition head and a long rod, the ignition head passes through the protecting pipe and extends into the inner wall of the mixing combustion cylinder, and the extending length is 2 - 15 mm.

11. A kind of ignition and combustion device for natural gas pilot lights according to claim 10, characterized in that, An ignition cable connector is arranged at the bottom end of the long rod of the L-shaped ignition rod.

12. A pilot gas combustion device for a natural gas pilot light according to claim 11, characterized in that, The natural gas pilot burner further includes an ignition rod bracket, one end of the ignition rod bracket is arranged on the outer wall of the air supply pipe, and the other end is connected to the L-shaped ignition rod.

13. A kind of ignition and combustion device for natural gas pilot lights according to claim 12, characterized in that, The ignition rod bracket is arranged in the same direction as the protecting pipe.

14. A kind of ignition and combustion device for natural gas pilot lights according to claim 3, characterized in that, The materials of the air supply pipe, the connecting flange, the connecting plate, the mixing combustion cylinder, the flame stabilizer, the combustion nozzle, the protecting pipe, the compression bolt, the ignition cable connector and the ignition rod bracket are austenitic stainless steel.

15. A method for using a pilot combustion device for a natural gas pilot light, applicable to a pilot combustion device for a natural gas pilot light according to any one of claims 1-14; characterized in that, It includes the following steps: S1: Connect the natural gas pipeline to the air supply pipe through the connecting flange, the natural gas enters the air supply pipe and is introduced into the mixing combustion cylinder under the subsequent pressure; S2: The ignition cable is powered on, the ignition head of the L-shaped ignition rod ignites the natural gas in the mixing combustion cylinder, and the flame enters the flame stabilizer through the combustion nozzle under the subsequent natural gas pressure; S3: The flame uses the oxygen entering through the small holes of the flame stabilizer for combustion support and is protected by the flame stabilizer at the same time; S4: After the flame is stabilized, the ignition cable is powered off, and the gas source continues to supply gas to the air supply pipe to realize the function of the pilot light or stops supplying gas after ignition to realize the function of the ignition cylinder.

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