Oxyhydrogen water fuel anti-backfire device

Abstract

The utility model discloses an oxyhydrogen water fuel anti-backfire device, which relates to the technical field of oxyhydrogen utilization, and comprises a device main body, the top of the device main body is connected with a pressure relief groove, one side of the pressure relief groove is respectively provided with a hydrogen sensor and an anti-explosion igniter, one side in the pressure relief groove is provided with a diversion trench, and the top of the pressure relief groove is connected with a protective cylinder. And a first spacer ring and a second spacer ring are connected to the interior of the protective cylinder. Through the arrangement of the pressure relief groove, the hydrogen sensor, the anti-explosion igniter, the flow guide groove, the drainage pipe and the drainage one-way valve, firstly, whether hydrogen escapes or not is monitored through the hydrogen sensor, and when hydrogen escapes into the pressure relief groove, gas is guided upwards through the flow guide groove to make contact with the anti-explosion igniter; then hydrogen in the gas body is ignited through the anti-explosion igniter, so that the escaped hydrogen is combusted into water to fall down, and then the water is discharged through the water discharging pipe and the water discharging one-way valve; the hydrogen escape phenomenon is effectively reduced, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen and oxygen utilization, in particular to a hydrogen and oxygen water fuel backfire prevention device. Background Art

[0002] Hydrogen-oxygen fuel is a clean energy source. The heat generated by hydrogen combustion can be used to heat equipment. Hydrogen combustion usually produces water. Compared with traditional fossil energy, it does not produce carbon monoxide or carbon dioxide. However, hydrogen is flammable and explosive. If an anti-backfire device is not installed, it can easily cause explosions and combustion in pipelines and equipment and containers that store or produce hydrogen, resulting in huge safety accidents. After installing an anti-backfire device, the flame can be isolated, improving the safety of hydrogen-oxygen fuel use.

[0003] Application number 202322950116.9 discloses a wet-type flashback prevention device for the main pipeline of an oxyhydrogen generator. The device comprises a sealed tank filled with water, one side of the sealed tank being connected to an air inlet pipe, the other upper side being connected to an air outlet pipe, and the bottom of the sealed tank being equipped with an air distribution pipe connected to the air inlet pipe, which is submerged in water. A pressure relief port is provided at the top of the sealed tank, which is equipped with a safety pressure relief device. This wet-type flashback prevention device for the main pipeline of an oxyhydrogen generator is simple in structure, easy to operate, and safe and reliable. It utilizes a water seal to prevent damage caused by flashback, effectively protecting the oxyhydrogen generator. It also features a pressure relief function. When the air pressure in the sealed tank increases, the safety pressure relief device at the top opens to relieve pressure, preventing excessive pressure and potentially damaging the tank body due to flashback explosions.

[0004] This technical solution sets up a pressure relief structure to avoid explosions when the air pressure in the device increases. However, the setting of the pressure relief structure will cause some hydrogen to escape through the pressure relief structure due to aging of seals, increased pressure due to high hydrogen and oxygen content in the device, and increased pressure due to internal explosions, thereby increasing the hydrogen content around the device and easily creating a fire hazard. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a hydrogen-oxygen-water fuel backfire prevention device to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydrogen-oxygen-water fuel backfire prevention device, comprising a device body, a pressure relief groove connected to the top of the device body, and a hydrogen sensor and an explosion-proof igniter are respectively installed on one side of the pressure relief groove, a guide groove is provided on one side of the inner part of the pressure relief groove, a protective tube is connected to the top of the pressure relief groove, and a first spacer ring and a second spacer ring are respectively connected to the inner part of the protective tube, through holes are opened on the outer surfaces of the protective tube, and a drainage one-way valve is connected to the bottom of the pressure relief groove through a drainage pipe.

[0007] By adopting the above technical solution, first, a hydrogen sensor is used to monitor whether there is hydrogen escape. When hydrogen escapes into the pressure relief tank, the gas is diverted upward through the guide groove to contact the explosion-proof igniter, and then the hydrogen in the gas is ignited by the explosion-proof igniter, so that the escaped hydrogen burns and turns into water and falls, and then the water is discharged through the drain pipe and the drainage one-way valve; when the escaped hydrogen is ignited, if the flame wants to splash to the surrounding area, it needs to pass through multiple through holes that are staggered in the protective tube, the first spacer ring and the second spacer ring in sequence, so as to extend the flame discharge path and achieve the effect of flame extinguishing, thereby preventing the flame from spraying out and burning surrounding equipment and personnel.

[0008] Furthermore, one side of the guide groove is arc-shaped, and the top of the guide groove is sloped.

[0009] By adopting the above technical solution, when hydrogen escapes into the pressure relief tank, the gas is guided upward through the guide groove to contact the explosion-proof igniter.

[0010] Furthermore, there are a plurality of through holes, and the plurality of through holes are distributed in a ring array shape. The plurality of through holes are divided into three groups, and the three groups of through holes are distributed in a staggered manner.

[0011] By adopting the above technical solution, when the escaped hydrogen is ignited, if the flame wants to splash to the surroundings, it needs to pass through multiple through holes that are staggered in the protective tube, the first spacer ring and the second spacer ring in sequence, extending the flame discharge path to achieve the flame extinguishing effect, thereby preventing the flame from spraying out and burning surrounding equipment and personnel.

[0012] Furthermore, a water inlet solenoid valve is installed on the outer surface of the device body, an air inlet one-way valve is installed on one side of the device body, and an air distribution pipe is connected to one side of the air inlet one-way valve, an air outlet is provided on the upper side of the other side of the device body, and a porous foam partition is connected inside the device body.

[0013] By adopting the above technical solution, clean water is input into the device body through the water inlet solenoid valve. After the water supply is completed, the water inlet solenoid valve stops supplying water to the inside of the device body. Then, the hydrogen and oxygen fuels pass through the air inlet one-way valve and the air distribution pipe in sequence and enter the lower part of the device body. Since the density of hydrogen and oxygen is less than that of water, the hydrogen and oxygen fuels will rise and then enter the burner through the air outlet. At the same time, the porous foam partition is used to reduce the occurrence of water vapor being discharged along with the hydrogen and oxygen fuels.

[0014] Furthermore, a bracket is connected to the lower part of the pressure relief groove, and a spring is sleeved on the outside of the bracket, and a sealing head is connected to the bottom of the bracket.

[0015] By adopting the above technical solution, the sealing head and the bracket move upward under the influence of air pressure, so that the expanded gas in the device body is discharged from the pressure relief groove. When the air pressure in the device body is restored, the spring drives the bracket to move downward so that the sealing head blocks the middle of the top of the device body again, reducing gas leakage.

[0016] Furthermore, the bracket is slidably connected due to the pressure relief groove, and the cross section of the bracket is in the shape of an "I".

[0017] By adopting the above technical solution, the sealing head and the bracket move upward under the influence of air pressure, and since the cross section of the bracket is in an I-shape, the bracket is prevented from falling off.

[0018] Furthermore, the sealing head abuts against the middle of the top of the device body.

[0019] By adopting the above technical solution, the spring drives the bracket to move downward so that the sealing head blocks the middle of the top of the device body again, reducing gas leakage.

[0020] Furthermore, a protective plate is connected to one side of the interior of the device body, a liquid level measuring cylinder is connected to the lower part of the other side of the device body, and a liquid level sensor is passed through the top of the liquid level measuring cylinder.

[0021] By adopting the above technical solution, the liquid level measuring cylinder is connected to the device body, so that the liquid level in the device body and the liquid level measuring cylinder are equal. At this time, the water level is monitored by the liquid level sensor. When the liquid level reaches the preset peak, the water inlet solenoid valve stops supplying water to the inside of the device body. If an explosion occurs in the device body, the part where the air distribution pipe leaks out of the water is shielded and protected by the setting of a protective plate. At the same time, since the liquid level sensor is installed outside the device body, damage to these two structures is avoided to affect the subsequent anti-backfire effect.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. The utility model is equipped with a pressure relief groove, a hydrogen sensor, an explosion-proof igniter, a diversion groove, a drain pipe and a drainage check valve. First, the hydrogen sensor monitors whether there is hydrogen escape. When hydrogen escapes into the pressure relief groove, the diversion groove guides the gas upward to contact the explosion-proof igniter. Then, the explosion-proof igniter ignites the hydrogen in the gas, causing the escaped hydrogen to burn and turn into water, which then falls. The water is then discharged through the drain pipe and the drainage check valve, effectively reducing the occurrence of hydrogen escape and improving safety.

[0024] 2. The utility model provides a protective tube, a first spacer ring, a second spacer ring and a through hole. When the escaped hydrogen is ignited, if the flame wants to splash to the surrounding area, it needs to pass through a plurality of through holes staggeredly distributed in the protective tube, the first spacer ring and the second spacer ring in sequence, thereby extending the flame discharge path to achieve the effect of flame extinguishing, avoiding the flame from spraying out and burning surrounding equipment and personnel, and further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the device body of the present utility model;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the pressure relief tank of the present utility model;

[0028] Figure 4 This is a schematic diagram of the top-sectional structure of the protective tube of the present utility model.

[0029] In the figure: 1. Device body; 2. Water inlet solenoid valve; 3. Air inlet one-way valve; 4. Air distribution pipe; 5. Air outlet; 6. Porous foam partition; 7. Liquid level measuring cylinder; 8. Liquid level sensor; 9. Protective plate; 10. Pressure relief groove; 11. Bracket; 12. Sealing head; 13. Spring; 14. Hydrogen sensor; 15. Explosion-proof igniter; 16. Diversion groove; 17. Drain pipe; 18. Drain one-way valve; 19. Protective cylinder; 20. First spacer ring; 21. Second spacer ring; 22. Through hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] The following describes an embodiment of the present invention based on its overall structure.

[0032] Example 1:

[0033] A hydrogen-oxygen-water fuel backfire prevention device, such as Figure 1 、 Figure 3 and Figure 4As shown, it includes a device body 1, a pressure relief groove 10 is connected to the top of the device body 1, a hydrogen sensor 14 and an explosion-proof igniter 15 are respectively installed on one side of the pressure relief groove 10, a guide groove 16 is provided on one side of the inside of the pressure relief groove 10, one side of the guide groove 16 is arc-shaped, and the top of the guide groove 16 is sloped, a protective cylinder 19 is connected to the top of the pressure relief groove 10, and the inside of the protective cylinder 19 is respectively connected with a first spacer ring 20 and a second spacer ring 21, and the outer surfaces of the protective cylinder 19, the first spacer ring 20 and the second spacer ring 21 are all provided with through holes 22, and there are multiple through holes 22, and the multiple through holes 22 are distributed in a ring array, and the multiple through holes 22 are divided into three groups, and the three groups of through holes 22 are staggered. The bottom of the pressure relief groove 10 is connected to a drainage one-way valve 18 through a drain pipe 17.

[0034] See Figure 1 and Figure 2 In the above embodiment, a water inlet solenoid valve 2 is installed on the outer surface of the device body 1, and clean water is input into the device body 1 through the water inlet solenoid valve 2; an air inlet check valve 3 is installed on one side of the device body 1, and an air distribution pipe 4 is connected to one side of the air inlet check valve 3. An air outlet 5 is provided on the upper side of the other side of the device body 1. The hydrogen and oxygen fuels pass through the air inlet check valve 3 and the air distribution pipe 4 in sequence and enter the lower part of the device body 1. Since the density of hydrogen and oxygen is less than that of water, the hydrogen and oxygen fuels will rise and then enter the burner through the air outlet 5; a porous foam partition 6 is connected inside the device body 1 to reduce the water vapor from following The phenomenon of hydrogen and oxygen fuel being discharged together occurs; a bracket 11 is connected to the lower part of the pressure relief groove 10. The bracket 11 is slidably connected to the pressure relief groove 10, and the cross-section of the bracket 11 is in the shape of an "I". A spring 13 is sleeved on the outside of the bracket 11, and a sealing head 12 is connected to the bottom of the bracket 11. The sealing head 12 abuts against the middle of the top of the device body 1. The sealing head 12 and the bracket 11 move upward under the influence of air pressure, so that the expanded gas in the device body 1 is discharged from the pressure relief groove 10 as mentioned above. When the air pressure in the device body 1 is restored, the spring 13 drives the bracket 11 to move downward so that the sealing head 12 blocks the middle of the top of the device body 1 again, reducing gas leakage.

[0035] Example 2:

[0036] On the basis of the above embodiment 1, in order to increase stability, the following settings are now adopted.

[0037] See Figure 2 In the above embodiment, a protective plate 9 is connected to one side of the inside of the device body 1, and a liquid level measuring cylinder 7 is connected to the bottom of the other side of the device body 1. A liquid level sensor 8 passes through the top of the liquid level measuring cylinder 7. If an explosion occurs in the device body 1, the protective plate 9 is set to block and protect the part of the gas distribution pipe 4 that leaks out of the water. At the same time, since the liquid level sensor 8 is installed outside the device body 1, damage to these two structures is avoided to affect the subsequent anti-backfire effect.

[0038] The implementation principle of the present invention is as follows: first, clean water is input into the device body 1 through the water inlet solenoid valve 2, and the liquid level measuring cylinder 7 is connected to the device body 1, so that the liquid levels in the device body 1 and the liquid level measuring cylinder 7 are equal. At this time, the water level is monitored by the liquid level sensor 8. When the liquid level reaches a preset peak, the water inlet solenoid valve 2 stops supplying water to the interior of the device body 1. Then, the hydrogen and oxygen fuels pass through the air inlet check valve 3 and the air distribution pipe 4 in sequence and enter the lower part of the interior of the device body 1. Since the density of hydrogen and oxygen is less than that of water, the hydrogen and oxygen fuels will rise and then enter the burner through the air outlet 5. At the same time, the porous foam partition 6 prevents water vapor from being discharged along with the hydrogen and oxygen fuels.

[0039] When backfire occurs, the flame is transmitted to the inside of the device body 1. At this time, the flame is isolated by water, thereby avoiding damage caused by continued backfire. If an explosion occurs in the device body 1, the protective plate 9 is set to shield and protect the part of the gas distribution pipe 4 that leaks out of the water. At the same time, since the liquid level sensor 8 is installed outside the device body 1, damage to these two structures is avoided to affect the subsequent anti-backfire effect. The sealing head 12 and the bracket 11 move upward under the influence of air pressure, so that the expanded gas in the device body 1 is discharged from the pressure relief groove 10 as mentioned above. When the air pressure in the device body 1 is restored, the spring 13 drives the bracket 11 to move downward so that the sealing head 12 blocks the middle of the top of the device body 1 again, reducing gas leakage.

[0040] The hydrogen sensor 14 is used to monitor whether there is hydrogen escape. When hydrogen escapes into the pressure relief tank 10, the gas is directed upward through the guide groove 16 to contact the explosion-proof igniter 15. The explosion-proof igniter 15 then ignites the hydrogen in the gas, causing the escaped hydrogen to burn and then turn into water and fall. The water is then discharged through the drain pipe 17 and the drain one-way valve 18. When the escaped hydrogen is ignited, if the flame wants to splash to the surrounding area, it needs to pass through multiple through holes 22 that are staggered in the protective tube 19, the first spacer ring 20 and the second spacer ring 21 in sequence to extend the flame discharge path and achieve the effect of flame extinguishing, thereby preventing the flame from spraying out and burning surrounding equipment and personnel.

[0041] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A hydrogen-oxygen-water fuel backfire prevention device, comprising a device body (1), characterized in that: The top of the device body (1) is connected to a pressure relief groove (10), and a hydrogen sensor (14) and an explosion-proof igniter (15) are respectively installed on one side of the pressure relief groove (10), a guide groove (16) is provided on one side of the inside of the pressure relief groove (10), the top of the pressure relief groove (10) is connected to a protective tube (19), and the inside of the protective tube (19) is respectively connected to a first spacer ring (20) and a second spacer ring (21), and the outer surfaces of the protective tube (19), the first spacer ring (20) and the second spacer ring (21) are all provided with through holes (22), and the bottom of the pressure relief groove (10) is connected to a drainage one-way valve (18) through a drainage pipe (17).

2. The hydrogen-oxygen-water fuel backfire prevention device according to claim 1, characterized in that: One side of the guide groove (16) is in an arc shape, and the top of the guide groove (16) is in a slope shape.

3. The hydrogen-oxygen-water fuel backfire prevention device according to claim 1, characterized in that: A plurality of through holes (22) are provided, and the plurality of through holes (22) are distributed in a ring array shape. The plurality of through holes (22) are divided into three groups, and the three groups of through holes (22) are distributed in a staggered manner.

4. The hydrogen-oxygen-water fuel backfire prevention device according to claim 1, characterized in that: A water inlet solenoid valve (2) is installed on the outer surface of the device body (1), an air inlet check valve (3) is installed on one side of the device body (1), and an air distribution pipe (4) is connected to one side of the air inlet check valve (3), an air outlet (5) is provided above the other side of the device body (1), and a porous foam partition (6) is connected inside the device body (1).

5. The hydrogen-oxygen-water fuel backfire prevention device according to claim 4, characterized in that: A bracket (11) is connected to the lower portion of the pressure relief groove (10), a spring (13) is sleeved on the outside of the bracket (11), and a sealing head (12) is connected to the bottom of the bracket (11).

6. The hydrogen-oxygen-water fuel backfire prevention device according to claim 5, characterized in that: The bracket (11) is slidably connected to the pressure relief groove (10), and the cross section of the bracket (11) is in the shape of an "I".

7. The hydrogen-oxygen-water fuel backfire prevention device according to claim 5, characterized in that: The sealing head (12) abuts against the middle of the top of the device body (1).

8. The hydrogen-oxygen-water fuel backfire prevention device according to claim 4, characterized in that: A protective plate (9) is connected to one side of the interior of the device body (1), a liquid level measuring cylinder (7) is connected below the other side of the device body (1), and a liquid level sensor (8) is passed through the top of the liquid level measuring cylinder (7).

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