A combustion system for eliminating combustible gas

Abstract

The present invention relates to the field of combustible gas test safety technology, and discloses a combustion system for eliminating combustible gas, including: an elastic member is fixed at one end, and the other end is a cantilever end; the bottom end of the torch is arranged near the cantilever end; an ignition structure ignites the hydrogen at the top of the torch, generates a flame, and ignites the combustible gas; the combustion system for eliminating combustible gas utilizes the reaction force of the hydrogen at the top of the torch, the torch swings downward, drives the cantilever end of the elastic member to swing downward, under the elastic restoring force of the elastic member, the cantilever end drives the torch to swing upward again, and the cycle is repeated, and the injection angle of the flame is constantly changing, so that the flame sweeps in a fan-shaped area. In this application, the reaction force of hydrogen output from the top of the torch is combined with the swinging of the cantilever end of the elastic member, and the flame sweeps a fan-shaped area. Compared with a static flame, the coverage of the flame is expanded, and combustible gas in a larger area is eliminated, and the number of torches equipped is relatively reduced, the working environment is simple, and the cost is significantly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of combustible gas test safety, and in particular to a combustion system for eliminating combustible gas. Background Art

[0002] In the test fields of hydrogen-related equipment, hydrogen-oxygen engines, and liquid oxygen-methane engines, flammable gases such as hydrogen and methane are often discharged into the environment due to the needs of the test process. The flammable gases in the environment are a safety hazard. The commonly used method to eliminate flammable gases is generally to use a torch to eliminate the flammable gases.

[0003] However, due to the uncertainty of the emission flow, emission temperature and emission velocity of combustible gases such as hydrogen and methane, a large number of torches are generally arranged in order to find the position of the appropriate oxygen and combustible gas mixing ratio. Ignition of each torch also requires coordination with the supply system and control system. The deployment of a large number of torches makes the working environment of combustible gas elimination site messy and significantly increases the cost of eliminating combustible gases. Summary of the invention

[0004] In view of this, the present invention provides a combustion system for eliminating combustible gas to solve the problem that the existing method of eliminating combustible gas by equipping a large number of torches makes the working environment at the combustible gas elimination site messy and the cost of eliminating combustible gas increases significantly.

[0005] The present invention provides a combustion system for eliminating combustible gas, comprising:

[0006] An elastic member is arranged in a horizontal direction, one end of the elastic member is fixed, and the other end of the elastic member is a cantilever end;

[0007] A torch is arranged in a vertical direction, and the bottom end of the torch is arranged close to the cantilever end of the elastic member;

[0008] a hydrogen supply subsystem connected to the flare, wherein the hydrogen supply subsystem is suitable for supplying hydrogen to the flare;

[0009] An ignition structure, adapted to ignite the hydrogen output from the top of the torch to generate a flame, thereby igniting the combustible gas around the torch;

[0010] The combustion system for eliminating combustible gas is suitable for utilizing the reaction force of hydrogen output from the top of the torch to make the torch swing downward, driving the cantilever end of the elastic member to swing downward, and under the action of the elastic restoring force of the elastic member, the cantilever end drives the torch to swing upward, and the cycle repeats, and the spray angle of the flame keeps changing, so that the flame sweeps within the fan-shaped area. Beneficial effect: The present application adopts the above-mentioned technical scheme, and the reaction force of hydrogen output from the top of the torch is combined with the swinging of the cantilever end of the elastic member, so that the flame sweeps a fan-shaped area, so that the range covered by the flame is expanded compared to the coverage of the static flame, and the combustible gas in a larger area can be eliminated, thereby improving the effect of eliminating the combustible gas, and then the number of torches can be relatively reduced, so that the working environment at the site of eliminating the combustible gas is simple, and the cost of eliminating the combustible gas is significantly reduced.

[0011] Optionally, the hydrogen supply subsystem is connected to the torch via a connecting pipe, and the connecting pipe is adapted to move with the swing of the torch. Beneficial effect: The present application adopts the above technical solution, and connects the hydrogen supply subsystem and the torch via a connecting pipe that can move with the swing of the torch, so that the torch can swing freely without being affected by the connecting pipe.

[0012] Optionally, the ignition structure is a spark plug.

[0013] Optionally, the hydrogen supply subsystem comprises:

[0014] a hydrogen source, suitable for providing hydrogen;

[0015] a first solenoid valve, one end of which is connected to the hydrogen source, and the other end of which is connected to the torch;

[0016] a second solenoid valve, arranged in parallel with the first solenoid valve, one end of the second solenoid valve being connected to the hydrogen source, and the other end of the second solenoid valve being connected to the torch; the second solenoid valve being in a normally open state;

[0017] The hydrogen supply subsystem is suitable for opening or closing the first solenoid valve according to a set interval period T. Beneficial effect: The present application adopts the above technical solution, the hydrogen source provides the torch with hydrogen with fluctuating flow rate, the reaction force fluctuation of the hydrogen output from the top of the torch increases, thereby further enabling the cantilever end of the elastic member to obtain a wider range of swinging motion; the torch also swings within a larger angle range, achieving a larger fan-shaped area swept by the flame, significantly expanding the coverage area of ​​the flame, and further reducing the number of torches equipped.

[0018] Optionally, the torch and the elastic member constitute a mass-spring unit, and the natural frequency corresponding to the first-order bending vibration mode of the mass-spring unit is f; the interval period T is the inverse of the natural frequency f. Beneficial effect: The present application adopts the above technical solution, and when the interval period T is the inverse of the natural frequency f, the mass-spring unit composed of the torch and the elastic member can be excited by the reaction force of the periodic flow fluctuation of hydrogen, thereby further enabling the cantilever end of the elastic member to obtain the maximum range of swinging motion; the torch also swings within the maximum angle range, achieving the maximum fan-shaped area swept by the flame, significantly expanding the coverage area of ​​the flame, and further reducing the number of torches equipped.

[0019] Optionally, the hydrogen supply subsystem further includes:

[0020] A controller is connected to the first solenoid valve signal, and the controller is suitable for remotely controlling the opening or closing of the first solenoid valve.

[0021] Optionally, the hydrogen supply subsystem further includes:

[0022] A first orifice plate is disposed on a pipeline connecting the first solenoid valve and the torch; the first orifice plate is suitable for limiting the flow rate of hydrogen flowing into the torch through the first solenoid valve;

[0023] The second orifice plate is arranged on the pipeline connecting the second solenoid valve and the torch; the second orifice plate is suitable for limiting the flow rate of hydrogen flowing into the torch through the second solenoid valve; the hydrogen flow area of ​​the first orifice plate is not greater than 30% of the hydrogen flow area of ​​the second orifice plate. Beneficial effect: The present application adopts the above technical solution, and by setting the fluctuation increment of the hydrogen flow rate limited by the first orifice plate, it is avoided that the flame of the torch is extinguished due to excessive fluctuation of the hydrogen flow rate limited by the first orifice plate.

[0024] Optionally, the thickness of the elastic member is set so that the swing period of the torch is in the range of 3 seconds to 5 seconds. Beneficial effect: The present application adopts the above technical solution, and by adjusting the thickness of the elastic member, the swing period of the torch is changed to a suitable range, so as to meet the sweeping requirements of the flame and prevent the flame from being extinguished.

[0025] Optionally, the ignition structure is suitable for continuously igniting the hydrogen output from the top of the torch. Beneficial effect: The present application adopts the above technical solution to continuously ignite the hydrogen output from the top of the torch through the ignition structure to prevent the flame of the torch from being extinguished.

[0026] Optionally, the elastic member is made of spring steel. Beneficial effect: The present application adopts the above technical solution, and by using spring steel to make the elastic member, fatigue fracture of the elastic member is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the connection of a combustion system for eliminating combustible gas provided in an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a flow curve of hydrogen supplied to a flare provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of a combustion system for eliminating combustible gas in a working state provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1. Hydrogen source; 2. Controller; 3. First solenoid valve; 4. First orifice plate; 5. Connecting pipe; 6. Cantilever end; 7. Torch; 8. Flame; 9. Spark plug; 10. Elastic member; 11. Second orifice plate; 12. Second solenoid valve. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 3 A specific embodiment of the combustion system for eliminating combustible gas shown includes: an elastic member 10, a torch 7, an ignition structure and a hydrogen supply subsystem. Specifically, the ignition structure is a spark plug 9. The combustion system for eliminating combustible gas described in the present application is suitable for eliminating combustible gas in the environment, preventing the spread of combustible gas, and eliminating safety hazards. The combustible gas includes: hydrogen and methane, etc.

[0035] like Figure 1As shown, the elastic member 10 is arranged in the horizontal direction, one end of the elastic member 10 is fixed, and the other end of the elastic member 10 is a cantilever end 6. Specifically, the elastic member 10 is a bendable elastic rod or a long elastic sheet. The torch 7 is arranged in the vertical direction, and the bottom end of the torch 7 is arranged near the cantilever end 6 of the elastic member 10. Specifically, the bottom end of the torch 7 is fixedly installed near the cantilever end 6 of the elastic member 10. The hydrogen supply subsystem is connected to the torch 7. Specifically, the hydrogen supply subsystem is connected to the torch 7 through a connecting pipe 5. The connecting pipe 5 is suitable for moving with the swing of the torch 7. Specifically, the connecting pipe 5 can be a hose. The hydrogen supply subsystem is suitable for supplying hydrogen to the torch 7. The ignition structure is suitable for igniting the hydrogen output from the top of the torch 7 to generate a flame 8, and then igniting the combustible gas around the torch 7. In addition, the ignition structure is suitable for continuously igniting the hydrogen output from the top of the torch 7. Specifically, the thickness of the elastic member 10 is set so that the swing period of the torch 7 is in the range of 3 seconds to 5 seconds. This is because when the thickness of the elastic member 10 is changed, if the thickness of the elastic member 10 is increased, the swing speed of the torch 7 will become faster, and if the thickness of the elastic member 10 is reduced, the swing speed of the torch 7 will decrease. By adjusting the thickness of the elastic member 10, the torch 7 swings once every 3 seconds to 5 seconds, which can meet the sweeping requirements of the flame 8 and will not cause the flame 8 to be extinguished. The elastic member 10 is made of spring steel.

[0036] like Figure 3 As shown, the combustion system for eliminating combustible gas is suitable for utilizing the reaction force of hydrogen output from the top of the torch 7, so that the torch 7 swings downward, driving the cantilever end 6 of the elastic member 10 to bend and swing downward. Under the action of the elastic restoring force of the elastic member 10, the cantilever end 6 drives the torch 7 to swing upward, and the cycle is repeated. The injection angle of the flame 8 is constantly changing, thereby causing the flame 8 to sweep within the fan-shaped area.

[0037] like Figure 1 As shown, the hydrogen supply subsystem includes: a hydrogen source 1 , a first solenoid valve 3 , a second solenoid valve 12 , a controller 2 , a first orifice plate 4 and a second orifice plate 11 .

[0038] The hydrogen source 1 is suitable for providing hydrogen. One end of the first solenoid valve 3 is connected to the hydrogen source 1, and the other end of the first solenoid valve 3 is connected to the torch 7. The second solenoid valve 12 is arranged in parallel with the first solenoid valve 3, one end of the second solenoid valve 12 is connected to the hydrogen source 1, and the other end of the second solenoid valve 12 is connected to the torch 7; the second solenoid valve 12 is in a normally open state. The hydrogen supply subsystem is suitable for opening or closing the first solenoid valve 3 according to a set interval period T. The controller 2 is connected to the first solenoid valve 3 by signal, and the controller 2 is suitable for remotely controlling the opening or closing of the first solenoid valve 3. The first orifice plate 4 is arranged on the pipeline connecting the first solenoid valve 3 and the torch 7; the first orifice plate 4 is suitable for limiting the flow rate of hydrogen flowing into the torch 7 through the first solenoid valve 3. The second orifice plate 11 is arranged on the pipeline connecting the second solenoid valve 12 and the flare 7; the second orifice plate 11 is suitable for limiting the flow rate of hydrogen flowing into the flare 7 through the second solenoid valve 12; after the output ends of the first orifice plate 4 and the second orifice plate 11 are connected in parallel, they are connected to the flare 7 through the connecting pipe 5. The hydrogen flow area of ​​the first orifice plate 4 is not greater than 30% of the hydrogen flow area of ​​the second orifice plate 11.

[0039] Furthermore, the torch 7 and the elastic member 10 form a mass spring unit, and the natural frequency corresponding to the first-order bending vibration mode of the mass spring unit is f; specifically, the natural frequency corresponding to the first-order bending vibration mode of the mass spring unit can be obtained as f through the mass of the torch 7, the length and stiffness of the elastic member 10. The interval period T is the reciprocal of the natural frequency f. The unit of the interval period T is seconds.

[0040] like Figure 2 and Figure 3As shown, the working principle of the hydrogen supply subsystem is briefly described as follows: when the torch 7 is working, the second electromagnetic valve 12 is in a normally open state, and the hydrogen source 1 supplies hydrogen with a stable flow rate of q to the torch 7. On the basis of the second electromagnetic valve 12 being normally open, after the first electromagnetic valve 3 is opened, the hydrogen flow rate supplied by the hydrogen source 1 to the torch 7 is q+Δq. After the first Δt time, the first electromagnetic valve 3 is closed. After the second Δt time, the first electromagnetic valve 3 is opened again. The process of opening and closing the first electromagnetic valve 3 is repeated continuously, so that the hydrogen flow rate supplied by the hydrogen source 1 to the torch 7 fluctuates according to the regular period of the interval period 2Δt. Here, the interval period 2Δt is the aforementioned interval period T. The reaction force fluctuation of the hydrogen output from the top of the torch 7 is also increased. When the value of 2Δt is close to the inverse of the natural frequency f, the mass spring unit composed of the torch 7 and the elastic member 10 can be excited by the reaction force of the periodic flow fluctuation of hydrogen, thereby further enabling the cantilever end 6 of the elastic member 10 to obtain a wider range of swinging motion. The torch 7 also swings within a larger angle range, so that the fan-shaped area swept by the flame 8 is larger, the coverage area of ​​the flame 8 is significantly expanded, and the number of torches 7 is further reduced. Specifically, the timing of opening and closing the first electromagnetic valve 3 can be adjusted by the controller 2, so that the value of 2Δt is the natural frequency f; the more the value of 2Δt deviates from 1 / f, the smaller the swing amplitude of the torch 7; the closer the value of 2Δt is to 1 / f, the larger the swing amplitude of the torch 7; when the value of 2Δt is equal to 1 / f, the swing amplitude of the torch 7 is the largest.

[0041] The adjustment of Δq can also be achieved by replacing the first orifice plate 4 and changing the flow area of ​​the first orifice plate 4. The larger Δq is, the larger the swing amplitude of the torch 7 is; the smaller Δq is, the smaller the swing amplitude of the torch 7 is.

[0042] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A combustion system for eliminating combustible gas, characterized in that: include: An elastic member (10) is arranged in a horizontal direction, one end of the elastic member (10) is fixed, and the other end of the elastic member (10) is a cantilever end (6); A torch (7) is arranged in a vertical direction, and the bottom end of the torch (7) is arranged close to the cantilever end (6) of the elastic member (10); a hydrogen supply subsystem connected to the flare (7), wherein the hydrogen supply subsystem is suitable for supplying hydrogen to the flare (7); An ignition structure, adapted to ignite the hydrogen output from the top of the torch (7) to generate a flame (8), thereby igniting the combustible gas around the torch (7); The combustion system for eliminating combustible gas is suitable for utilizing the reaction force of hydrogen output from the top of the torch (7) to make the torch (7) swing downward, driving the cantilever end (6) of the elastic member (10) to swing downward, and under the action of the elastic restoring force of the elastic member (10), the cantilever end (6) drives the torch (7) to swing upward, and the cycle is repeated, and the injection angle of the flame (8) is constantly changed, so that the flame (8) sweeps within the fan-shaped area.

2. The combustion system for eliminating combustible gas according to claim 1, characterized in that: The hydrogen supply subsystem is connected to the torch (7) via a connecting pipe (5), and the connecting pipe (5) is adapted to move along with the swing of the torch (7).

3. The combustion system for eliminating combustible gas according to claim 1, characterized in that: The ignition structure is a spark plug (9).

4. The combustion system for eliminating combustible gas according to any one of claims 1 to 3, characterized in that: The hydrogen supply subsystem comprises: A hydrogen source (1) suitable for providing hydrogen; a first solenoid valve (3), one end of which is connected to the hydrogen source (1), and the other end of which is connected to the torch (7); a second solenoid valve (12) arranged in parallel with the first solenoid valve (3), one end of the second solenoid valve (12) being connected to the hydrogen source (1), and the other end of the second solenoid valve (12) being connected to the torch (7); the second solenoid valve (12) being in a normally open state; The hydrogen supply subsystem is suitable for opening or closing the first solenoid valve (3) according to a set interval period T.

5. The combustion system for eliminating combustible gas according to claim 4, characterized in that: The torch (7) and the elastic member (10) form a mass-spring unit, the natural frequency corresponding to the first-order bending vibration mode of the mass-spring unit is f; and the interval period T is the inverse of the natural frequency f.

6. The combustion system for eliminating combustible gas according to claim 4, characterized in that: The hydrogen supply subsystem further comprises: A controller (2) is connected to the first solenoid valve (3) via a signal, and the controller (2) is suitable for remotely controlling the opening or closing of the first solenoid valve (3).

7. The combustion system for eliminating combustible gas according to claim 4, characterized in that: The hydrogen supply subsystem further comprises: A first orifice plate (4) is arranged on a pipeline connecting the first solenoid valve (3) and the torch (7); the first orifice plate (4) is suitable for limiting the flow rate of hydrogen flowing through the first solenoid valve (3) into the torch (7); The second orifice plate (11) is arranged on the pipeline connecting the second solenoid valve (12) and the torch (7); the second orifice plate (11) is suitable for limiting the flow rate of hydrogen flowing into the torch (7) through the second solenoid valve (12); the hydrogen flow area of ​​the first orifice plate (4) is not greater than 30% of the hydrogen flow area of ​​the second orifice plate (11).

8. The combustion system for eliminating combustible gas according to any one of claims 1 to 3, characterized in that: The thickness of the elastic member (10) is set so that the swing period of the torch (7) is in the range of 3 seconds to 5 seconds.

9. The combustion system for eliminating combustible gas according to any one of claims 1 to 3, characterized in that: The ignition structure is suitable for continuously igniting the hydrogen output from the top of the torch (7).

10. The combustion system for eliminating combustible gas according to any one of claims 1 to 3, characterized in that: The elastic member (10) is made of spring steel.

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