Hydrogen-oxygen mixed burner

Abstract

The utility model discloses a hydrogen-oxygen mixed burner, which relates to the technical field of burners and particularly comprises a burner nozzle, two gas delivery pipes are mounted at one end of the burner nozzle, and the gas delivery pipes are mounted on a mounting plate; the end, away from the burner, of each gas conveying pipe is connected with one end of a first fireproof pipe, the other end of the first fireproof pipe is connected with one end of a second fireproof pipe, and the other end of the second fireproof pipe is connected with an outlet of a flow valve. One end, close to the gas conveying pipe, in the first fireproof pipe is provided with at least one first fire retardant disc, and one end, away from the gas conveying pipe, in the first fireproof pipe is provided with a monitoring cavity. When the flame monitoring device is used, the arranged first flame arresting disc is used for arresting flames from the direction of the gas conveying pipe, if the flames enter the monitoring cavity, the flame sensor can immediately transmit information to the controller, and the controller rapidly controls the flow valve to be closed, so that the flames are prevented from continuing to advance; therefore, the combustion safety is completely protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to burner technical field, concretely is a kind of hydrogen-oxygen mixed burner. BACKGROUND

[0002] Hydrogen burner is an important component of burning hydrogen, hydrogen fuel is mixed with oxygen therein to ensure complete combustion, and its combustion temperature can reach 1200 DEG C or above. Safety is the top priority when hydrogen-oxygen burner burns, and an important measure is to install a flame arrestor in the hydrogen-oxygen burner. The flame arrestor plays a crucial role in the hydrogen-oxygen burner, and the main purpose is to prevent the occurrence of backfire.

[0003] However, the existing hydrogen burner has a poor flame arrestor effect, and the flame can enter the internal body. Therefore, we propose a hydrogen-oxygen mixed burner. SUMMARY

[0004] To solve the problem raised in the above background art, the hydrogen-oxygen mixed burner provided by the utility model has the advantages of blocking fire by the first and second flame arrestors and monitoring the flame by the flame sensor, which can immediately close the flow valve.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a hydrogen-oxygen mixed burner, comprising a burner nozzle, two gas supply pipes are installed at one end of the burner nozzle, and the gas supply pipes are installed on a mounting plate; one end of each gas supply pipe away from the burner nozzle is connected to one end of a first fireproof pipe, the other end of the first fireproof pipe is connected to one end of a second fireproof pipe, and the other end of the second fireproof pipe is connected to the outlet of a flow valve; at least one first flame arrestor is provided at one end of the first fireproof pipe close to the gas supply pipe, a monitoring chamber is provided at one end of the first fireproof pipe away from the gas supply pipe, a flame sensor is installed on the first fireproof pipe at the monitoring chamber, and the flame sensor and the flow valve are respectively connected to a controller; a second flame arrestor is provided in the second fireproof pipe.

[0006] Preferably, flange rings are provided at one end of each gas supply pipe away from the burner nozzle, both ends of the first fireproof pipe, and one end of the second fireproof pipe close to the first fireproof pipe, and the flange rings are detachably connected.

[0007] Preferably, a second limiting ring is provided at one end of the monitoring chamber close to the burner nozzle, the second limiting ring is provided on the inner wall of the first fireproof pipe, and the first flame arrestor is disposed at the side surface of the second limiting ring.

[0008] Preferably, the second fireproof pipe is provided with an air inlet cavity near one end of the flow valve, and the air inlet cavity is provided with a first limiting ring at the end away from the flow valve, and the first limiting ring is arranged on the inner wall of the second fireproof pipe, and the second fireproof disc is arranged at the side of the first limiting ring.

[0009] Preferably, the first fireproof pipe is provided with a supporting leg on both sides, and the supporting leg is detachably installed at the top of the L-shaped support, and the L-shaped support is installed at the side of the mounting plate.

[0010] Preferably, the mounting plate is provided with a mounting hole, and the gas conveying pipe is arranged in the mounting hole, and the mounting flange is arranged at the center of the mounting hole, and the edge of the mounting flange is detachably connected with the edge of the mounting hole.

[0011] Preferably, the mounting plate is provided with a protective shell at the end away from the combustion nozzle.

[0012] Preferably, the first fireproof disc is at least two, and the first fireproof discs are separated by a supporting ring.

[0013] Preferably, the inlet of the flow valve is provided with a connecting pipe.

[0014] Compared with the prior art, the first fireproof disc is arranged to block the flame from the gas conveying pipe, and when the flame enters the monitoring chamber, the flame sensor immediately transmits the information to the controller, and the controller controls the flow valve to be closed, thereby hindering the continuous advancement of the flame, and thereby ensuring the safety of the combustion. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the rear structure of the utility model.

[0016] Figure 2 It is a schematic view of the front structure of the utility model.

[0017] Figure 3 It is a schematic view of the structure of the utility model after installing the protective shell.

[0018] Figure 4 It is a schematic view of the structure of the mounting plate of the utility model.

[0019] Figure 5 It is a schematic view of the structure of part of the utility model.

[0020] Figure 6 It is a schematic view of the structure inside the fireproof pipe of the utility model.

[0021] Figure 7 It is a schematic view of the structure of the utility model and the furnace body.

[0022] In the figure: 1, mounting plate; 2, first fire dam; 3, first fireproof pipe; 4, flame sensor; 5, second fireproof pipe; 6, flow valve; 7, connecting pipe; 8, controller; 9, reinforcing frame; 10, L-shaped support; 11, mounting flange; 12, gas delivery pipe; 13, combustion nozzle; 14, support leg; 15, protective shell; 16, support ring; 17, second limiting ring; 18, gas inlet cavity; 19, first limiting ring; 20, monitoring chamber; 21, second fire dam; 22, flange ring; 23, mounting hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1 to 6 The utility model provides a kind of technical solutions: a hydrogen-oxygen mixed burner, including combustion nozzle 13, combustion nozzle 13 is made of refractory metal or ceramic, combustion nozzle 13 one end is equipped with two gas delivery pipes 12, gas delivery pipe 12 is installed on mounting plate 1, combustion nozzle 13 overall is the shape of big port small in middle part, two gas delivery pipes 12 are connected in the one end of combustion nozzle 13 big head, when using, one gas delivery pipe 12 is used to pass into hydrogen, another gas delivery pipe 12 is used to pass into oxygen, when hydrogen and oxygen reach inside combustion nozzle 13 simultaneously, they are mixed in combustion nozzle 13, then ignite in combustion nozzle 13 end.

[0025] Two gas delivery pipes 12 pass hydrogen, oxygen respectively, so that oxygen and hydrogen path are independent, in the process of oxygen and hydrogen delivery, hydrogen-oxygen can only be mixed in combustion nozzle 13, i.e. hydrogen in delivery will not mix into oxygen, and vice versa. The one end of two gas delivery pipes 12 away from combustion nozzle 13 is equipped with fire damper, i.e. the one end of each gas delivery pipe 12 away from combustion nozzle 13 is connected with the one end of first fireproof pipe 3, the other end of first fireproof pipe 3 is connected with the one end of second fireproof pipe 5, the other end of second fireproof pipe 5 is connected with the outlet of flow valve 6, the inlet of flow valve 6 is respectively connected with connecting pipe 7, connecting pipe 7 is connected with hydrogen-oxygen generator through pipeline, and in actual use process, gas delivery pump can be installed on two pipelines to help the delivery of hydrogen and oxygen.

[0026] As Figure 6As shown, at least one first fire barrier disc 2 is arranged in the first fire barrier tube 3 near one end of the gas conveying tube 12, and a monitoring chamber 20 is arranged in the first fire barrier tube 3 away from the gas conveying tube 12, and a flame sensor 4 is arranged on the first fire barrier tube 3 at the monitoring chamber 20, the detection end of the flame sensor 4 is located in the monitoring chamber 20, and the flame sensor 4 and the flow valve 6 are respectively connected with the controller 8, and again as Figure 6 As shown, the second fire barrier disc 21 is arranged in the second fire barrier tube 5.

[0027] The first fire barrier disc 2 is at least two (hereinafter, the first fire barrier disc 2 is described as two), the first fire barrier disc 2 is separated by a support ring 16, so that there is a certain distance between the two first fire barrier discs 2, and the support ring 16 is arranged in the first fire barrier tube 3. In actual use, since hydrogen and oxygen are simultaneously introduced into the combustion nozzle 13, when the hydrogen and oxygen conveying is closed, the hydrogen and oxygen may be mixed with each other, so that each gas conveying tube 12 has the possibility of deflagration. The first fire barrier disc 2 is arranged to block the flame from the gas conveying tube 12. The first fire barrier disc 2 is arranged as two, which not only increases the length for extinguishing the flame, but also expands when the flame enters the support ring 16 after passing through the first first fire barrier disc 2, further shortens the flame, and then the flame enters the second first fire barrier disc 2 to extinguish the flame again. Therefore, no matter how big the flame is, it will be completely extinguished after passing through the two first fire barrier discs 2. However, if the flame enters the monitoring chamber 20, the flame is monitored by the sensor 4 at this time, and the flame sensor 4 immediately transmits the information to the controller 8, and the controller 8 quickly controls the flow valve 6 to be closed, thereby hindering the continuous advancement of the flame. The flow valve 6 here is an explosion-proof flow valve.

[0028] It should be noted that it is very necessary to arrange the second fire barrier disc 21, that is, the second fire barrier disc 21 is arranged to block the flame from the monitoring chamber 20. The second fire barrier disc 21 not only blocks the flame, but also reduces the transmission speed of the flame, so that the flow valve 6 is closed before the flame reaches the flow valve 6, thereby achieving a 100% protection effect.

[0029] The gas conveying tube 12, the first fire barrier tube 3, and the second fire barrier tube 5 in the present application are detachable, which facilitates opening and replacing the fire barrier disc. The specific structure is that flange rings 22 are arranged at one end of the gas conveying tube 12 away from the combustion nozzle 13, both ends of the first fire barrier tube 3, and one end of the second fire barrier tube 5 close to the first fire barrier tube 3, the flange rings 22 are detachably connected, and the flange rings 22 are fastened by bolts. In this way, the gas conveying tube 12, the first fire barrier tube 3, and the second fire barrier tube 5 can be freely detached.

[0030] A second limiting ring 17 is arranged at one end of the monitoring chamber 20 close to the combustion nozzle 13, and the second limiting ring 17 is arranged on the inner wall of the first fire barrier tube 3. The first fire barrier disc 2 is arranged at the side of the second limiting ring 17.Figure 6 As shown, the inner diameter of the first fireproof plate 2 is larger than the inner diameter of the gas pipe 12, and the inner diameter of the second fireproof pipe 5 is larger than the inner diameter of the first fireproof pipe 3, so that the volume of the flame flowing out of the gas pipe 12 is increased once when entering the first fireproof pipe 3, and is increased again when entering the second fireproof pipe 5, so that the flame is expanded twice, which can effectively reduce the flame propagation speed and length. Moreover, such design also has the advantage that when the gas pipe 12, the first fireproof pipe 3 and the second fireproof pipe 5 are connected with each other, the internal space forms a stepped shape, so that the first fireproof plate 2 and the second fireproof plate 21 can be limited and will not move;

[0031] At the same time, the gas inlet cavity 18 is arranged at one end of the second fireproof pipe 5 close to the flow valve 6, and the first limiting ring 19 is arranged at the end of the gas inlet cavity 18 away from the flow valve 6. The first limiting ring 19 is arranged on the inner wall of the second fireproof pipe 5, and the second fireproof plate 21 is arranged at the side of the first limiting ring 19. The first limiting ring 19 and the second limiting ring 17 have the same effect of blocking the fireproof plate, and both of them are used to block the fireproof plate. The first limiting ring 19 and the gas inlet cavity 18 formed at the end of the second fireproof pipe 5 are used to expand the volume of the gas flowing out of the flow valve 6, so as to facilitate the uniform flow of the gas into the second fireproof plate 21.

[0032] It should be emphasized that the flow valve 6 can detect the flow of the gas, and the controller 8 controls the two flow valves 6 to maintain the ratio of hydrogen and oxygen at 2:1, so that the combustion of hydrogen and oxygen is more sufficient, and no matter how much gas is introduced, the ratio of the two is maintained at the best ratio.

[0033] Further, in order to prevent the first fireproof pipe 3 from bending and deforming, the supporting legs 14 are arranged on both sides of the first fireproof pipe 3, and the bottom of the supporting legs 14 is detachably installed on the top of the L-shaped bracket 10, and the bottom of the L-shaped bracket 10 is installed on the side of the mounting plate 1. Figure 1 As shown, the reinforcing frame 9 is also installed in the L-shaped bracket 10.

[0034] Further, the mounting plate 1 is provided with a mounting hole 23, and the gas pipe 12 is arranged in the mounting hole 23. The mounting flange 11 is installed at the center of the gas pipe 12, and the edge of the mounting flange 11 is detachably connected with the edge of the mounting hole 23.

[0035] As shown, the reinforcing frame 9 is also installed in the L-shaped bracket 10. Figure 7As shown, in actual use, the gas delivery pipe 12 and the combustion nozzle 13 need to be placed inside the furnace body, and the edges of the mounting plate 1 are bolted to the furnace body, so the gas delivery pipe 12 and the combustion nozzle 13 need to withstand high temperature, and a ceramic sleeve can be sleeved on the gas delivery pipe 12, so as to reduce the damage of the gas delivery pipe 12. However, after long-term use, the gas delivery pipe 12 and the combustion nozzle 13 need to be replaced, the gas delivery pipe 12, the combustion nozzle 13 and the mounting flange 11 are an integral whole, when replacement is needed, only the mounting flange 11 needs to be disassembled, and a new gas delivery pipe 12, combustion nozzle 13 and mounting flange 11 can be replaced.

[0036] Further, as shown, Figure 3 The mounting plate 1 is detachably provided with a protective shell 15 away from the combustion nozzle 13, the controller 8 is arranged in the protective shell 15, and the protective shell 15 is provided with a louvered air vent and an exhaust fan.

[0037] Based on the above embodiment, further optimization can be made, the protective shell 15 is provided with an operation screen connected with the control, and operation buttons including buttons for adjusting the flow of hydrogen and oxygen and emergency stop buttons, and the flow information and the like are displayed on the operation screen.

[0038] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hydrogen-oxygen hybrid combustor comprising a combustion nozzle (13), characterized in that, The combustion nozzle (13) is provided with two gas pipes (12) at one end, and the gas pipes (12) are installed on the mounting plate (1); The other end of the first fireproof pipe (3) is connected with one end of the second fireproof pipe (5), and the other end of the second fireproof pipe (5) is connected with the outlet of the flow valve (6); The first fireproof pipe (3) is provided with at least one first fireproof disc (2) near one end of the gas pipe (12), and is provided with a monitoring chamber (20) away from the gas pipe (12), and the first fireproof pipe (3) at the monitoring chamber (20) is provided with a flame sensor (4), and the flame sensor (4) and the flow valve (6) are connected with the controller (8); and The second fireproof disc (21) is arranged in the second fireproof pipe (5).

2. The oxyhydrogen mixture combustor according to claim 1, wherein The flange ring (22) is arranged at the other end of the gas pipe (12) away from the combustion nozzle (13), the two ends of the first fireproof pipe (3), and the end of the second fireproof pipe (5) close to the first fireproof pipe (3), and the flange ring (22) is detachably connected.

3. The oxyhydrogen mixture combustor according to claim 2, wherein The second limiting ring (17) is arranged at one end of the monitoring chamber (20) close to the combustion nozzle (13), and the first fireproof disc (2) is arranged at the side of the second limiting ring (17).

4. The oxyhydrogen mixture combustor according to claim 3, wherein The first limiting ring (19) is arranged at one end of the second fireproof pipe (5) close to the flow valve (6), and the second fireproof disc (21) is arranged at the side of the first limiting ring (19).

5. The oxyhydrogen mixture combustor according to claim 1, wherein The first fireproof pipe (3) is provided with the supporting leg (14) on both sides, and the supporting leg (14) is detachably installed at the top of the L-shaped support (10) at the bottom.

6. The oxyhydrogen mixture combustor according to claim 1, wherein The mounting plate (1) is provided with the mounting hole (23) at the top, and the gas pipe (12) is arranged in the mounting hole (23), and the gas pipe (12) is installed at the center of the mounting flange (11), and the edge of the mounting flange (11) is detachably connected with the edge of the mounting hole (23).

7. The oxyhydrogen hybrid combustor according to any one of claims 1 to 6, wherein The mounting plate (1) is provided with the mounting hole (23) at the top, and the gas pipe (12) is arranged in the mounting hole (23), and the gas pipe (12) is installed at the center of the mounting flange (11), and the edge of the mounting flange (11) is detachably connected with the edge of the mounting hole (23).

8. The oxy-hydrogen burner according to claim 1 or 4, wherein The first fireproof disc (2) is at least two, and the first fireproof disc (2) is separated by the supporting ring (16).

9. The oxyhydrogen mixture combustor according to claim 1, wherein The inlet of the flow valve (6) is provided with the connecting pipe (7).

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