A composite water seal type coke oven gas arrester

Abstract

The utility model relates to a kind of composite water seal type coke oven gas flame arrestor, belong to gas flame arrestor technical field. Including upper water seal box and lower water seal box, upper water seal box keeps sealed with outside, lower water seal box keeps communicating with outside, the top of upper water seal box is fixedly connected with top cover, the inner chamber lower half portion of upper water seal box is vertically fixed and set with baffle, and the inner chamber lower half portion of upper water seal box is separated into first chamber and second chamber by baffle, first chamber is used to store water, top cover is vertically fixed and set with air inlet pipe, the lower end of air inlet pipe penetrates top cover and extends to the liquid level below in first chamber. The utility model is sealed with outside by setting upper water seal box and lower water seal box, can achieve the purpose of fire separation, and lower water seal box communicates with outside, then play the role of pressure relief. The gas flame arrestor adopts water seal structure to achieve the purpose of flame arrest, compared with traditional metal wire mesh type flame arrestor, the water seal structure can effectively avoid the problem of blockage, and has higher reliability.

Description

Technical Field

[0001] This utility model relates to the field of gas flame arresters, and in particular to a composite water-sealed coke oven gas flame arrester. Background Technology

[0002] A coke oven gas flame arrestor is a safety device installed on coke oven gas pipelines or equipment. The working principle of the flame arrestor is that when one side of the flame arrestor catches fire, the flame spreads to the flame arrestor. Because the flame arrestor is filled with a large amount of metal wire mesh, the metal wire mesh absorbs a large amount of heat, lowering the temperature. The combustible gas then loses its ignition conditions and is extinguished, thus achieving the purpose of preventing and isolating the flame.

[0003] However, coke oven gas often contains components such as tar and naphthalene. When coke oven gas carrying these components passes through the flame arrester, they are very likely to accumulate at the flame arrester wire mesh, causing blockage of the channel and thus affecting the flow of gas. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a composite water-sealed coke oven gas flame arrestor. The technical solution of this utility model is as follows: A composite water-sealed coke oven gas flame arrester includes an upper water seal box and a lower water seal box, wherein the upper water seal box is sealed to the outside, and the lower water seal box is open to the outside. The top of the upper water seal tank is fixedly connected to a top cover. A partition is vertically fixed to the lower half of the inner cavity of the upper water seal tank, and the lower half of the inner cavity of the upper water seal tank is divided into a first chamber and a second chamber by the partition. The first chamber is used for water storage. An air inlet pipe is vertically fixed to the top cover. The lower end of the air inlet pipe passes through the top cover and extends to below the liquid surface in the first chamber. An air outlet pipe is vertically fixed to the top cover and is located above the first chamber. A drain pipe is vertically fixed to the bottom wall of the upper water seal tank and located at the bottom of the second chamber. The lower water seal tank is fixedly connected to the outside of the drain pipe by a support ring seat. A water channel is formed between the lower end of the drain pipe and the inner bottom wall of the lower water seal tank. An overflow pipe is horizontally connected to the upper end of the side wall of the lower water seal tank.

[0005] Optionally, an observation port is provided on the outer wall of the upper water seal box and on the left side of the first chamber. The lower edge of the observation port is lower than the lower end of the air inlet pipe, and the upper edge of the observation port is higher than the upper edge of the partition. An observation mirror is fixedly embedded inside the observation port.

[0006] Optionally, the upper edge of the partition is serrated.

[0007] Optionally, the lower end of the air intake pipe is serrated.

[0008] Optionally, a water baffle is fixedly suspended on the lower surface of the top cover and directly below the air outlet pipe by multiple sets of support columns.

[0009] Optionally, a water supply valve is connected to the upper end of the outer wall of the upper water seal box, and the outlet of the water supply valve is located above the first chamber.

[0010] Optionally, a vent valve is also fixedly connected to the top cover.

[0011] Optionally, an air drain valve is fixedly connected to the bottom wall of the upper water seal tank and located at the bottom of the first chamber.

[0012] All of the above-mentioned optional technical solutions can be combined arbitrarily, and this utility model does not provide a detailed description of the structure after each combination.

[0013] The beneficial effects of this utility model through the above solution are as follows: This invention utilizes an upper and lower water seal box. The upper water seal box is sealed to the outside, achieving flame isolation, while the lower water seal box is open to the outside, serving as a pressure relief mechanism. This gas flame arrester employs a water seal structure to achieve flame arrest, which, compared to traditional wire mesh flame arresters, effectively avoids clogging and offers higher reliability. When backfire occurs in the outlet pipe, the water column inside the lower end of the inlet pipe effectively blocks the backflow path of the flame and combustible gas. Simultaneously, the positive pressure generated in the outlet pipe is released through the lower water seal box, significantly improving the overall safety of the device.

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall appearance structure of the composite water-sealed coke oven gas flame arrestor provided by this utility model. Figure 2 A front cross-sectional view of the composite water-sealed coke oven gas flame arrestor provided by this utility model. Figure 3 This is a schematic diagram of the structure of the upper water seal box and the partition plate in this utility model; Figure 4 An exploded view of the composite water-sealed coke oven gas flame arrestor provided by this utility model.

[0016] The following are labeled in the diagram: 1. Upper water seal box; 11. Top cover; 12. First chamber; 13. Second chamber; 14. Observation port; 15. Observation mirror; 2. Partition; 3. Air inlet pipe; 4. Air outlet pipe; 41. Water baffle; 5. Water supply valve; 6. Vent valve; 7. Drain valve; 8. Drain pipe; 81. Support ring seat; 9. Lower water seal box; 10. Overflow pipe. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0018] Please see Figure 1-4 This utility model provides a composite water-sealed coke oven gas flame arrester, including an upper water seal box 1 and a lower water seal box 9. The upper water seal box 1 is sealed to the outside, while the lower water seal box 9 is open to the outside. A top cover 11 is fixedly connected to the top of the upper water seal box 1. A partition 2 is vertically fixed to the lower half of the inner cavity of the upper water seal box 1, and the lower half of the inner cavity of the upper water seal box 1 is divided into a first chamber 12 and a second chamber 13 by the partition 2. The first chamber 12 is used for water storage. An air inlet pipe 3 is vertically fixed on the top cover 11. The lower end of the air inlet pipe 3 passes through the top cover 11 and extends to below the liquid surface in the first chamber 12. An air outlet pipe 4 is vertically fixed on the top cover 11 and is located above the first chamber 12. A drain pipe 8 is vertically fixed on the bottom wall of the upper water seal box 1 and located at the bottom of the second chamber 13. A lower water seal box 9 is fixedly connected to the outside of the drain pipe 8 by a support ring seat 81. A water channel is formed between the lower end of the drain pipe 8 and the inner bottom wall of the lower water seal box 9. An overflow pipe 10 is horizontally connected to the upper end of the side wall of the lower water seal box 9. An opening is provided at the upper end of the lower water seal box 9.

[0019] Specifically, reinforcing ribs can be added to the bottom and top cover 11 of the upper water seal tank 1 to meet the water seal strength requirements. The height of the partition 2 represents the height of the water seal liquid level. Sufficient clearance must be left between the partition 2 and the inner wall of the top cover 11 to prevent water bubbles generated during air intake from splashing onto the top cover 11 and directly entering the air outlet pipe 4.

[0020] Under normal ventilation conditions, coal gas enters through the inlet pipe 3, passes through the liquid level in the first chamber 12, and enters the upper half of the inner cavity of the upper water seal box 1. At this time, the coal gas flows to the outlet pipe 4 under pressure and is discharged through the outlet pipe 4. Simultaneously, the condensate generated in the upper water seal box 1 causes the liquid level in the first chamber 12 to rise, thus passing over the partition 2 and entering the second chamber 13, and flowing into the lower water seal box 9 through the drain pipe 8. When the liquid level inside the lower water seal box 9 is higher than the height of the overflow pipe 10, the excess water will be automatically discharged from the overflow pipe 10, realizing automatic water level control. When backfire occurs in the outlet pipe 4, positive pressure appears in the outlet pipe 4. At this time, because the lower end of the inlet pipe 3 is immersed in the water seal of the first chamber 12, and a water column of a certain height is formed inside the lower end of the inlet pipe 3, the combustible gas in the outlet pipe 4 is effectively prevented from returning to the inlet pipe 3. At this time, the positive pressure generated by the vent pipe 4 enters the second chamber 13 and flows into the lower water seal box 1 through the drain pipe 8. When the positive pressure of the vent pipe 4 is greater than the static pressure of the water seal in the lower water seal box 9, the gas will break through the water seal of the lower water seal box 9 and be released into the upper space of the lower water seal box 9 in the form of bubbles through the water body. The gas is then directly discharged into the atmosphere through the upper opening of the lower water seal box 9 and the overflow pipe 10. This process effectively prevents the accumulation of gas in the upper water seal box 9 and reduces the risk of explosion caused by accumulation.

[0021] It should be noted that under normal ventilation conditions, since the drain pipe 8 at the lower end of the second chamber 13 is connected to the drain seal box 9, the gas can only be discharged from the gas outlet pipe 4 and will not flow into the drain seal box 9.

[0022] Furthermore, an observation port 14 is provided on the outer wall of the upper water seal box 1, located on the left side of the first chamber 12. The lower edge of the observation port 14 is lower than the lower end of the air inlet pipe 3, ensuring that the minimum safe water level of the water seal can be observed (the lower end of the air inlet pipe 3 must be submerged for effective flame sealing). The upper edge of the observation port 14 is higher than the upper edge of the partition 2, ensuring that the highest point of the water level can be observed (i.e., the top of the partition 2; if the water level exceeds this height, it will overflow into the second chamber 13). An observation mirror 15 is fixedly embedded inside the observation port 14. Through the observation mirror 15, the operator can quickly observe the liquid seal condition inside the upper water seal box 1.

[0023] Furthermore, the upper edge of the baffle 2 is serrated to ensure liquid level stability. The serration shape ensures more uniform and stable overflow. When the water level exceeds the height of the baffle 2, water will overflow from each groove of the baffle 2 simultaneously, avoiding local turbulence or water level fluctuations. This helps to maintain the relative stability of the liquid level in the first chamber 12, thereby improving the stability of the water seal effect.

[0024] Furthermore, the lower end of the air intake pipe 3 is designed with a serrated shape. During the air intake process, the serrated shape of the lower end of the air intake pipe 3 can cut large air bubbles that are flushed into the water into smaller and more dispersed small air bubbles, making the gas release more uniform and helping to reduce the impact of airflow on the water seal liquid surface and pressure fluctuations.

[0025] Furthermore, a baffle plate 41 is fixedly suspended on the lower surface of the top cover 11 and directly below the gas outlet pipe 4 by multiple sets of support columns. When gas enters the water seal of the first chamber 12 from the gas inlet pipe 3, it will cause liquid surface fluctuation and splashing. The baffle plate 41 can directly block the water droplets splashing from below, thereby preventing water droplets from mixing into the gas outlet pipe 4.

[0026] Furthermore, a water supply valve 5 is connected to the upper end of the outer wall of the upper water seal tank 1, and the outlet of the water supply valve 5 is located above the first chamber 12. When the operator observes a decrease in the liquid level inside the first chamber 12 through the observation mirror 15, the water supply valve 5 can be manually opened to replenish water to the first chamber 12. Alternatively, a level gauge can be installed inside the first chamber 12, and the level gauge is interlocked with the water supply valve 5. When the level gauge detects a decrease in the liquid level inside the first chamber 12, the water supply valve 5 can be automatically replenished via the control terminal.

[0027] Furthermore, a vent valve 6 is also fixedly connected to the top cover 11. The vent valve 6 is used for inspection purposes to safely release flammable gases and pressure accumulated in the upper water seal tank 1.

[0028] Furthermore, a drain valve 7 is fixedly connected to the bottom wall of the upper water seal tank 1 and located at the bottom of the first chamber 12. Due to the presence of impurities in the gas, after a period of operation, some debris may accumulate in the first chamber 12 of the upper water seal tank 1, requiring staff to periodically open the drain valve 7 to manually remove the debris.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A composite water-sealed coke oven gas flame arrestor, characterized in that: It includes an upper water seal box (1) and a lower water seal box (9), wherein the upper water seal box (1) is sealed to the outside, and the lower water seal box (9) is open to the outside; The top of the upper water seal tank (1) is fixedly connected to a top cover (11). A partition (2) is vertically fixed to the lower half of the inner cavity of the upper water seal tank (1), and the lower half of the inner cavity of the upper water seal tank (1) is divided into a first chamber (12) and a second chamber (13) by the partition (2). The first chamber (12) is used for water storage. An air inlet pipe (3) is vertically fixed to the top cover (11). The lower end of the air inlet pipe (3) penetrates the top cover (11) and extends to below the liquid surface in the first chamber (12). A vent pipe (4) is vertically fixed on the top cover (11), and the vent pipe (4) is located above the first chamber (12). A drain pipe (8) is vertically fixed on the bottom wall of the upper water seal box (1) and at the bottom of the second chamber (13). The lower water seal box (9) is fixedly connected to the outside of the drain pipe (8) by a support ring seat (81). A water channel is formed between the lower end of the drain pipe (8) and the inner bottom wall of the lower water seal box (9). An overflow pipe (10) is horizontally connected to the upper side wall of the lower water seal box (9).

2. The composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, An observation port (14) is provided on the outer wall of the upper water seal box (1) and on the left side of the first chamber (12). The lower edge of the observation port (14) is lower than the lower end of the air inlet pipe (3), and the upper edge of the observation port (14) is higher than the upper edge of the partition (2). An observation mirror (15) is fixedly embedded inside the observation port (14).

3. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, The upper edge of the partition (2) is serrated.

4. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, The lower end of the air intake pipe (3) is serrated.

5. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, A water baffle (41) is suspended on the lower surface of the top cover (11) and directly below the air outlet pipe (4) by multiple sets of support columns.

6. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, The upper end of the outer wall of the upper water seal box (1) is connected to a water supply valve (5), and the outlet of the water supply valve (5) is located above the first chamber (12).

7. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, An air vent valve (6) is also fixedly connected to the top cover (11).

8. A composite water-sealed coke oven gas flame arrestor according to claim 1, characterized in that, An air vent valve (7) is fixedly connected to the bottom wall of the upper water seal box (1) and to the bottom of the first chamber (12).

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