Water seal fire retardant device

Abstract

The utility model discloses a water seal fire retardant device which comprises an air inlet pipeline and an air outlet pipeline. The fire-retardant tank body and the separation tank body are connected between the gas inlet pipeline and the gas outlet pipeline, a first gas inlet and a first gas outlet are formed in the fire-retardant tank body, a second gas inlet and a second gas outlet are formed in the separation tank body, the first gas inlet is connected with the gas inlet pipeline, the first gas outlet is connected with the second gas inlet, and the second gas outlet is connected with the gas outlet pipeline; the hydrogen-oxygen mixed gas can sequentially flow through the gas inlet pipeline, the fire-retardant tank body, the separation tank body and the gas outlet pipeline, a photoelectric sensor used for detecting tempering flames is further arranged in the separation tank body, and an electromagnetic valve is arranged between the first gas outlet and the second gas inlet; and the control module is in communication connection with the electromagnetic valve and the photoelectric sensor, and the control module is suitable for controlling the electromagnetic valve according to an electric signal of the photoelectric sensor so as to cut off the pipeline when tempering flames appear in the separation tank body.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of oxyhydrogen cutting, and particularly relates to a water fire blocking device. BACKGROUND

[0002] Hydrogen energy, as an economical renewable clean energy, has been widely used in people's life and production. An oxyhydrogen generator can electrolyze water into hydrogen and oxygen according to the principle of electrolysis of water. The hydrogen-oxygen mixed gas generated after electrolysis has good combustion performance and can be used in various fields and people's daily life. For example, in the steel industry, hydrogen-oxygen mixed gas is used as cutting fuel gas to work on the billet. However, the hydrogen-oxygen mixed gas has the characteristics of fast burning speed, easy flashover and easy backfire, which can easily cause safety hazards.

[0003] Therefore, a blocking device needs to be installed on the transmission line of the hydrogen-oxygen mixed gas to play a fire blocking protection role, so as to avoid the hydrogen-oxygen mixed gas flowing in the pipeline, causing the high-temperature components on the transmission line to be eroded and damaged by the flame, causing the transmission line to fail and unable to work normally. The wet fire arrester is a commonly used fire arrester, and its principle is to block the fire through a liquid medium with fire-retardant properties. However, the traditional wet fire arrester in the prior art has some defects, the fire blocking effect is not ideal, and the hydrogen-oxygen mixed gas flowing out of the wet fire arrester will carry water vapor, which will condense and adhere to the inner wall of the transmission pipeline in the subsequent transmission process. SUMMARY

[0004] An object of the application is to provide a water fire blocking device to solve the above problems, improve the fire blocking effect, improve the use safety, and avoid the hydrogen-oxygen mixed gas carrying water vapor.

[0005] To achieve the above object, the technical scheme adopted by the application is as follows: a water fire blocking device, comprising:

[0006] an air inlet pipeline and an air outlet pipeline;

[0007] a fire blocking tank and a separation tank connected between the air inlet pipeline and the air outlet pipeline, the fire blocking tank is provided with a first air inlet and a first air outlet, the separation tank is provided with a second air inlet and a second air outlet, the first air inlet is connected with the air inlet pipeline, the first air outlet is connected with the second air inlet, the second air outlet is connected with the air outlet pipeline, and then the hydrogen-oxygen mixed gas can flow through the air inlet pipeline, the fire blocking tank, the separation tank and the air outlet pipeline in sequence, a photoelectric sensor for detecting backfire flame is further arranged between the separation tank and the fire blocking tank, and an electromagnetic valve is arranged between the first air inlet and the air inlet pipeline;

[0008] and a control module, which is in communication connection with the electromagnetic valve and the photoelectric sensor respectively, and the control module is adapted to control the electromagnetic valve according to the electric signal of the photoelectric sensor, so as to disconnect the pipeline when the backfire flame appears in the separation tank body.

[0009] As a preferred, the inside of the fireproof tank body is provided with a fireproof cavity for storing fireproof liquid medium, the first gas inlet is arranged at the bottom of the fireproof tank body and communicates with the fireproof cavity, and the first gas outlet is arranged at the top of the fireproof tank body and communicates with the fireproof cavity, so that the hydrogen-oxygen mixed gas can flow into the fireproof cavity from the first gas inlet, pass through the liquid medium and then flow out from the first gas outlet.

[0010] As another preferred, the fireproof tank body further comprises a fireproof net, which is arranged in the fireproof cavity along the radial direction of the fireproof tank body, and the fireproof net is located at the side of the fireproof cavity close to the first gas inlet, and the fireproof net is implemented as a microporous metal net.

[0011] Further preferably, the pore size of the microporous metal net is 0.1-0.3 mm.

[0012] Further, the inner wall of the fireproof cavity extends inwardly to form an upper fixing seat, a lower fixing seat is detachably arranged on the upper fixing seat, and the fireproof net is clamped between the upper fixing seat and the lower fixing seat, and a sealing ring is further arranged between the fireproof net and the upper fixing seat.

[0013] Further, a liquid level observation tube is further arranged on the side wall of the fireproof tank body, and the liquid level observation tube communicates with the fireproof cavity, so that the liquid level in the fireproof cavity is the same as the liquid level in the liquid level observation tube.

[0014] Further, the liquid level observation tube comprises a transparent tube body and upper and lower tube seats arranged on the fireproof tank body, and the two ends of the transparent tube body are detachably connected with the upper and lower tube seats respectively.

[0015] Further, the second gas inlet is arranged at one side of the separation tank body, the second gas outlet is arranged at the top of the separation tank body, a drain pipe is arranged on the side of the separation tank body opposite to the second gas inlet, a turning plate is arranged in the separation tank body, the turning plate is a hollow structure, and the turning plate has a circular truncated cone structure with a large top and a small bottom, the diameter of the bottom of the turning plate is smaller than the diameter of the top, and the two ends of the turning plate are both provided with openings, and the top opening of the turning plate communicates with the second gas outlet.

[0016] Further, the drain pipe is arranged in an L-shaped structure, including a first pipe body extending horizontally and a second pipe body extending vertically, the first pipe body extends through the separation tank body and extends out of the separation tank body, and the second pipe body extends to the bottom of the separation tank body and is arranged spaced apart from the bottom wall of the separation tank body.

[0017] Further, the height of the second air inlet is higher than the bottom height of the turn-back plate, and the highest height of the drain pipe is lower than the bottom height of the turn-back plate.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] The fire-retardant net in the fire-retardant tank can cut and refine the bubbles of hydrogen-oxygen mixed gas in the liquid medium, avoiding the continuous large-bubble gas bubbles in the liquid medium for tempering, and ensuring the fire-retardant effect of the liquid medium; the electromagnetic valve is arranged between the first air inlet and the air inlet pipeline, when the tempering flame appears in the separation tank body, the control module can control the electromagnetic valve to disconnect the pipeline, thereby further ensuring the fire-retardant effect, and the separation tank can also perform water-gas separation on the hydrogen-oxygen mixed gas flowing out of the fire-retardant tank, avoiding that the water content of the hydrogen-oxygen mixed gas is too high to affect the subsequent process steps. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the water seal fire-retardant device of the present application.

[0021] Figure 2 It is a flowchart of the water seal fire-retardant device of the present application.

[0022] Figure 3 It is a sectional view of the fire-retardant tank in the water seal fire-retardant device of the present application.

[0023] Figure 4 It is a sectional view of the separation tank in the water seal fire-retardant device of the present application.

[0024] In the figure: 100, device housing; 200, air inlet pipeline; 300, fire-retardant tank; 310, first air inlet; 320, first air outlet; 330, fire-retardant cavity; 340, liquid medium; 350, liquid level observation tube; 351, upper pipe seat; 352, transparent pipe body; 353, lower pipe seat; 360, fire-retardant net; 370, upper fixed seat; 380, lower fixed seat; 390, sealing ring; 400, separation tank; 410, second air inlet; 420, second air outlet; 430, turn-back plate; 440, drain pipe; 441, first pipe body; 442, second pipe body; 500, air outlet pipeline; 600, control module; 700, photoelectric sensor; 800, electromagnetic valve. DETAILED DESCRIPTION

[0025] Hereinafter, the present application will be further described with reference to the specific embodiments, it should be noted that the following described embodiments or technical features can be combined with each other to form new embodiments, without conflict.

[0026] In the description of the present application, it should be noted that, for orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0028] The terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] As Figure 1As shown, the application provides a water seal fire blocking device, which comprises a device housing 100, and a gas inlet pipeline 200, a fire blocking tank 300, a separation tank 400, a gas outlet pipeline 500 and a control module 600 arranged in the device housing 100. The fire blocking tank 300 and the separation tank 400 are connected between the gas inlet pipeline 200 and the gas outlet pipeline 500, the fire blocking tank 300 is provided with a first gas inlet 310 and a first gas outlet 320, the separation tank 400 is provided with a second gas inlet 410 and a second gas outlet 420, the first gas inlet 310 is connected with the gas inlet pipeline 200, the first gas outlet 320 is connected with the second gas inlet 410, and the second gas outlet 420 is connected with the gas outlet pipeline 500, so that the hydrogen-oxygen mixed gas can flow from the gas inlet pipeline 200, pass through the fire blocking tank 300 and the separation tank 400, and then flow out from the gas outlet pipeline 500. The fire blocking tank 300 is adapted to block the backfire flame by the liquid medium 340 in the tank, and the separation tank 400 is adapted to separate the water vapor in the hydrogen-oxygen mixed gas. Further, a photoelectric sensor 700 is arranged in the pipeline between the separation tank 400 and the fire blocking tank 300, the photoelectric sensor 700 can convert the light signal into an electric signal, so as to detect whether the backfire flame appears in the separation tank 400, an electromagnetic valve 800 is arranged between the first gas inlet 310 and the gas inlet pipeline 200, the photoelectric sensor 700 and the electromagnetic valve 800 are respectively in communication connection with the control module 600, the control module 600 can control the electromagnetic valve 800 to be on or off according to the electric signal of the photoelectric sensor 700, so that when the backfire flame appears in the pipeline between the separation tank 400 and the fire blocking tank 300, the electromagnetic valve 800 disconnects the first gas inlet 310 and the gas inlet pipeline 200, and when the backfire flame does not appear in the pipeline between the separation tank 400 and the fire blocking tank 300, the electromagnetic valve 800 connects the first gas inlet 310 and the gas inlet pipeline 200.

[0030] As Figure 2As shown, the inside of the fire blocking tank body 300 is provided with a fire blocking cavity 330 for storing liquid medium 340. The first gas inlet 310 is arranged on the bottom sidewall of the fire blocking tank body 300 and communicates with the fire blocking cavity 330. The first gas outlet 320 is arranged on the top wall of the fire blocking tank body 300 and communicates with the fire blocking cavity 330. Hydrogen-oxygen mixed gas can flow into the fire blocking cavity 330 from the first gas inlet 310, then rise in the liquid medium 340 to the upper part of the fire blocking cavity 330, and then flow out of the first gas outlet 320 into the separation tank body 400. When a backfire flame occurs, the liquid medium 340 can block the burning hydrogen-oxygen mixed gas. At the same time, the control module 600 controls the electromagnetic valve 800 to disconnect the first gas inlet 310 from the gas inlet pipeline 200, so as to avoid the burning hydrogen-oxygen mixed gas from further flowing into the gas inlet pipeline 200. The liquid medium 340 is a liquid with fire-retardant properties and a large specific heat capacity, which can be but is not limited to water, and can block the flame. The liquid medium 340 does not fill the entire fire blocking cavity 330, and the height ratio between the liquid level of the liquid medium 340 and the fire blocking cavity 330 can be adjusted according to actual conditions within the range specified by safety index parameters.

[0031] The fire blocking tank body 300 is provided with a liquid level observation tube 350 which communicates with the fire blocking cavity 330, so that the liquid level in the liquid level observation tube 350 is the same as the liquid level in the fire blocking cavity 330, and the liquid level in the fire blocking cavity 330 can be known through the liquid level observation tube 350. The liquid level observation tube 350 includes an upper tube seat 351 arranged at the top of the fire blocking tank body 300 and a lower tube seat 353 arranged at the middle of the fire blocking tank body 300. A transparent tube body 352 is connected between the upper tube seat 351 and the lower tube seat 353, and the transparent tube body 352 is detachably connected with the upper tube seat 351 and the lower tube seat 353. In actual use, the transparent tube body 352 is yellowed due to oxidation over time or contaminated by impurities in the liquid medium 340, so that the liquid level in the transparent tube body 352 cannot be clearly observed. The detachable connection of the transparent tube body 352 with the upper tube seat 351 and the lower tube seat 353 allows the transparent tube body 352 to be replaced after a long period of use.

[0032] Further, the fire blocking tank body 300 further includes a fire blocking mesh 360 which is arranged in the fire blocking cavity 330 along the radial direction of the fire blocking tank body 300, and the fire blocking mesh 360 is located on the side of the fire blocking cavity 330 close to the first gas inlet 310. The fire blocking mesh 360 is a multi-microporous metal mesh, and a large number of micropores are arranged on the fire blocking mesh 360. The pore size of the micropores is 0.1-0.3 mm. When hydrogen-oxygen mixed gas flows into the fire blocking cavity 330 through the first gas inlet 310, the hydrogen-oxygen mixed gas will pass through the fire blocking mesh 360 when rising in the liquid medium 340, and be cut and refined by the micropores on the fire blocking mesh 360, so that continuous large gas bubbles in the liquid medium 340 can be avoided.

[0033] When the backfire phenomenon occurs, the burning hydrogen-oxygen mixed gas will spread along the pipeline to the upper part of the liquid medium 340. If there are continuous large particle bubbles in the liquid medium 340 at this time, the burning hydrogen-oxygen mixed gas will pass through the continuous large particle bubbles to pass through the liquid medium 340, causing the burning hydrogen-oxygen mixed gas to further spread to the upper level equipment through the gas inlet pipeline 200, causing damage to the upper level equipment. The setting of the fire barrier net 360 cuts and refines the hydrogen-oxygen mixed gas, avoiding the burning hydrogen-oxygen mixed gas from backfiring through the continuous large particle bubbles, and ensuring the fire retardant effect of the liquid medium 340. At the same time, through the cooperation of the photoelectric sensor 700, the electromagnetic valve 800 and the control module 600, when the backfire flame appears, the electromagnetic valve 800 is automatically closed, so that the passage between the first gas inlet 310 and the gas inlet pipeline 200 is disconnected, thereby ensuring that the backfire flame will not spread to the upper level equipment.

[0034] Further, the inner wall of the fire barrier cavity 330 extends inwardly to form an upper fixed seat 370, and a lower fixed seat 380 is detachably connected to the upper fixed seat 370. The fire barrier net 360 is clamped between the upper fixed seat 370 and the lower fixed seat 380. The lower fixed seat 380 can be connected by screws or the like, thereby facilitating maintenance and replacement of the fire barrier net 360 by the operator. A sealing ring 390 is further provided between the upper fixed seat 370 and the fire barrier net 360, which is adapted to prevent the hydrogen-oxygen mixed gas from passing through the gap between the fire barrier net 360 and the upper fixed seat, and to ensure the cutting and refining effect of the fire barrier net 360 on the hydrogen-oxygen mixed gas.

[0035] The second gas inlet 410 is arranged on one side of the separation tank body 400, and the second gas outlet 420 is arranged on the top of the separation tank body 400. A drain pipe 440 is arranged on the side wall of the separation tank body 400 opposite to the second gas inlet 410. The inside of the separation tank body 400 is provided with a turning plate 430. The turning plate 430 is a hollow structure and has a circular table structure with a large top and a small bottom. The diameter of the bottom of the turning plate 430 is smaller than that of the top. Openings are arranged at both ends of the turning plate 430. The top opening of the turning plate 430 is in communication with the second gas outlet 420. The height position of the first gas inlet 310 is higher than the bottom height of the turning plate 430. Thus, when the hydrogen-oxygen mixed gas with water vapor flows into the separation tank body 400 from the second gas inlet 410, the hydrogen-oxygen mixed gas with water vapor hits on the turning plate 430, and the hydrogen-oxygen mixed gas changes the flow direction, thereby separating the small droplets in the hydrogen-oxygen mixed gas. At the same time, due to the large internal space of the separation tank body 400, the flow rate of the hydrogen-oxygen mixed gas is reduced, and the small droplets on the turning plate 430 have enough time to coagulate into large droplets. The large droplets flow downward along the turning plate 430 and collect at the bottom of the separation tank body 400, and will not be taken away by the hydrogen-oxygen mixed gas, thereby realizing the separation of water vapor and hydrogen-oxygen mixed gas. The condensed water vapor at the bottom of the separation tank body 400 can be discharged to the outside of the separation tank body 400 through the drain pipe 440.

[0036] The drain pipe 440 is arranged in an L-shaped structure, and includes a first pipe body 441 extending horizontally and a second pipe body 442 extending vertically. The first pipe body 441 penetrates through the sidewall of the separation tank body 400 and extends out of the separation tank body 400. The highest height of the first pipe body 441 is lower than the bottom height of the turn-back plate 430. The second pipe body 442 extends to the bottom of the separation tank body 400 and is arranged in a spaced manner with the bottom wall of the separation tank body 400. The first pipe body 441 can be connected with a water pump to extract the condensed water vapor in the separation tank body 400.

[0037] The water seal fire blocking device provided by the present application blocks the fire flame by the fire blocking net 360 and the liquid medium 340, and cuts off the passage between the air inlet pipeline 200 and the first air inlet 310 in cooperation with the electromagnetic valve 800 and the photoelectric sensor 700, so as to avoid the spread of the burning hydrogen-oxygen mixed gas to the upper level equipment. After the hydrogen-oxygen mixed gas passing through the liquid medium 340 flows into the separation tank body 400, the small droplets are separated by the multi-directional change of the flow with the aid of the turn-back plate 430. Meanwhile, the space inside the separation tank body 400 is large, and the flow rate of the hydrogen-oxygen mixed gas is reduced, so that the small droplets on the turn-back plate 430 have enough time to condense into large droplets and are collected at the bottom of the separation tank body 400, so as to realize the separation of water and gas.

[0038] The above describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-described embodiments, and the above-described embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A water seal fire damper, characterized by, The application relates to a hydrogen-oxygen mixture pipeline system. The pipeline system comprises: an air inlet pipeline and an air outlet pipeline; a fireproof tank and a separation tank connected between the air inlet pipeline and the air outlet pipeline, the fireproof tank is provided with a first air inlet and a first air outlet, the separation tank is provided with a second air inlet and a second air outlet, the first air inlet is connected with the air inlet pipeline, the first air outlet is connected with the second air inlet, the second air outlet is connected with the air outlet pipeline, and then hydrogen-oxygen mixture can flow through the air inlet pipeline, the fireproof tank, the separation tank and the air outlet pipeline in sequence, a photoelectric sensor for detecting backfire flame is further arranged between the separation tank and the fireproof tank, and an electromagnetic valve is arranged between the first air inlet and the air inlet pipeline; and a control module, which is in communication connection with the electromagnetic valve and the photoelectric sensor, and is adapted to control the electromagnetic valve according to the electric signal of the photoelectric sensor, so as to disconnect the pipeline when backfire flame appears in the separation tank. The fireproof tank is internally provided with a fireproof cavity for storing fireproof liquid medium, the first air inlet is arranged at the bottom of the fireproof tank and is in communication with the fireproof cavity, and the first air outlet is arranged at the top of the fireproof tank and is in communication with the fireproof cavity, so that hydrogen-oxygen mixture can flow into the fireproof cavity from the first air inlet, pass through the liquid medium and then flow out from the first air outlet.

2. The water seal flame arrestor of claim 1, wherein, The fireproof tank further comprises a fireproof net, the fireproof net is arranged in the fireproof cavity along the radial direction of the fireproof tank, and the fireproof net is located at the side of the fireproof cavity close to the first air inlet, and the fireproof net is implemented as a microporous metal net.

3. The water seal flame arrestor of claim 2, wherein, The micropore diameter of the fireproof net is 0.1-0.3 mm.

4. The water seal flame arrestor of claim 3, wherein, The inner wall of the fireproof cavity extends inward to form an upper fixing seat, a lower fixing seat is detachably arranged on the upper fixing seat, the fireproof net is clamped between the upper fixing seat and the lower fixing seat, and a sealing ring is further arranged between the fireproof net and the upper fixing seat.

5. The water seal flame arrestor of claim 3, wherein, A liquid level observation tube is further arranged on the side wall of the fireproof tank and is in communication with the fireproof cavity, so that the liquid level height in the fireproof cavity is the same as the liquid level height in the liquid level observation tube.

6. The water seal flame arrestor of claim 3, wherein, The liquid level observation tube comprises a transparent tube body and upper and lower tube seats arranged on the fireproof tank, and the two ends of the transparent tube body are detachably connected with the upper and lower tube seats respectively.

7. The water seal flame arrestor of claim 6, wherein, The second air inlet is arranged at one side of the separation tank, the second air outlet is arranged at the top of the separation tank, a drain pipe is arranged on the side of the separation tank opposite to the second air inlet, the separation tank is internally provided with a turning plate, the turning plate is a hollow structure, the turning plate is in the shape of a circular truncated cone with the top larger than the bottom, the diameter of the bottom of the turning plate is smaller than the diameter of the top, the two ends of the turning plate are both provided with openings, and the top opening of the turning plate is in communication with the second air outlet.

8. The water seal flame arrestor of claim 3, wherein, ​ 9. The water seal flame arrestor of claim 8, wherein, The drain pipe is arranged in an L-shaped structure, including a horizontally extending first pipe body and a vertically extending second pipe body, the first pipe body extends through the separation tank body and extends out of the separation tank body, and the second pipe body extends to the bottom of the separation tank body and is arranged in space with the bottom wall of the separation tank body.

10. The water seal flame arrestor of claim 8, wherein, The height of the second air inlet is higher than the bottom height of the turn-back plate, and the highest height of the drain pipe is lower than the bottom height of the turn-back plate.

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