A coke oven gas pipeline drain self-cleaning device

Abstract

The present application discloses a coke oven gas pipeline drainpipe self-cleaning device, which comprises a gas pipeline and a drainpipe connected to the bottom surface of the gas pipeline, an expansion pipe part is arranged on the drainpipe, a conical hopper one is arranged at the bottom of the expansion pipe part, a plurality of sealing nozzles one are arranged in the expansion pipe part, a normally closed valve is arranged at the water outlet of the sealing nozzle one, the normally closed valve comprises a valve body and an elastic reset unit connected to the valve body, a water supply pipe one is connected to the sealing nozzle one, a flushing valve one is arranged on the water supply pipe one, a high-pressure water source is connected to the flushing valve one, an observation window is arranged on the drainpipe, the observation window is located on the lower side of the conical hopper one, a drain cleaner is connected to the bottom end of the drainpipe, and a blowdown opening is arranged at the bottom of the drain cleaner; the present application has the advantages of stable operation of the drainpipe, convenient cleaning and convenient monitoring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coke oven gas drainage, in particular to a coke oven gas pipeline drainage pipe self-cleaning device. BACKGROUND

[0002] Coke oven gas, also known as coke oven gas, is a combustible gas produced as a byproduct of the coking industry. It is a mixture of various hydrocarbons and other compounds, with a composition that varies depending on the quality of the coal used and the conditions of the coking process. Typically, each ton of dry coal produces 300-350 m 3 of coke oven gas, which contains mainly hydrogen (55-60%) and methane (23-27%), as well as small amounts of carbon monoxide, unsaturated hydrocarbons, carbon dioxide, oxygen, and nitrogen.

[0003] The coke oven gas drainage device mainly consists of a coke oven gas drainage device body and a coke oven gas drainage device anti-leakage device. The main functions of the coke oven gas drainage device are: 1) to seal the gas and drain the condensed water using the water seal height; 2) to reflect the level of the sealing water in the drainage device; and 3) to seal the gas and prevent the leakage of a large amount of gas once the water seal in the drainage device is breached.

[0004] Coke oven gas is usually transported using a gas pipe, and a drainage pipe is provided on the gas pipe. The drainage pipe is connected to the coke oven gas drainage device, and the communication pipe between the drainage device and the gas pipeline is usually DN100 in diameter.

[0005] The problems in the prior art are: 1) the drainage pipe is prone to accumulate slag due to the high slag content in coke oven gas, which can cause blockage of the drainage pipe and even the gas main pipe; 2) the slag contains corrosive chemicals such as sulfur and naphthalene, which can corrode the gas pipeline if not cleaned in time, affecting the sealing performance of the gas pipeline; and 3) the gas pipeline cannot be cleaned during operation, and the cleaning process must be performed manually when the gas pipeline is shut down, which is time-consuming and labor-intensive. SUMMARY

[0006] The present application aims to solve the problems in the prior art by providing a coke oven gas pipeline drainage pipe self-cleaning device, which has the advantages of stable operation, easy cleaning, and convenient monitoring.

[0007] In order to achieve the above object, the technical scheme adopted by the present application is: a coke oven gas pipeline drain pipe self-cleaning device, comprising a gas pipeline and a drain pipe connected to the bottom surface of the gas pipeline, an expansion pipe part is arranged on the drain pipe, a conical hopper one is arranged at the bottom of the expansion pipe part, a plurality of sealing nozzles one are arranged in the expansion pipe part, a normally closed valve is arranged at the water outlet of the sealing nozzle one, the normally closed valve comprises a valve body and an elastic reset unit connected with the valve body, the sealing nozzle one is connected with a water supply pipe one, a flushing valve one is arranged on the water supply pipe one, the flushing valve one is connected with a high-pressure water source, an observation window is arranged on the drain pipe, the observation window is located on the lower side of the conical hopper one, the bottom end of the drain pipe is connected with a drain, and the bottom of the drain is provided with a blowdown port.

[0008] In the above scheme, the drain pipe is used to collect the accumulated water in the gas pipeline and discharge the accumulated water to the drain, the sealing nozzle one is installed by arranging the expansion pipe part on the drain pipe, the spraying and flushing work of the sealing nozzle one is controlled by the flushing valve one on the water supply pipe one, the conical hopper one is arranged to facilitate the slag to be washed down to the drain, and the slag is finally discharged from the blowdown port of the drain, so as to avoid pipeline blockage and corrosion, the elastic reset unit of the normally closed valve is used to block the water outlet with the valve body in the non-flushing state, so as to avoid the backflow of gas from the water pipe and the blockage of the water outlet by the slag. The observation window is arranged to facilitate the intuitive observation of the slag adhesion condition inside the drain pipe and the clarity degree of the water flow during flushing, so as to correspondingly adjust the flushing time and frequency. The sealing nozzle one, the water supply pipe one, the flushing valve one and the high-pressure water source constitute a flushing system, the flushing system is arranged in the drain pipe, so as to ensure that the slag in the drain pipe is discharged to the drain in time, and then discharged from the blowdown port, so as to avoid pipeline blockage and pipeline corrosion and leakage.

[0009] The drain pipe self-cleaning device is installed, the slag adhered to the wall of the drain pipe can be flushed online, an observation window is arranged near the bottom of the conical hopper one, the accumulated slag condition of the pipeline is observed, the high-pressure water valve is opened when the pipeline has accumulated slag, the high-pressure water valve dilutes and flushes the slag on the pipeline wall, until the transparency of the flushing water at the position of the observation window reaches the requirement, and then the water valve is closed.

[0010] Further, a plurality of sealing nozzles one are arranged in the expansion pipe part in a ring shape, the top of the sealing nozzle one is connected with a branch water pipe, the branch water pipe is connected with a ring-shaped pipeline located outside the expansion pipe part, and the ring-shaped pipeline is connected with the water supply pipe one.

[0011] The sealing nozzle one is arranged in a ring shape, which does not affect the falling of the slag, facilitates the flushing of the side wall of the expansion pipe part, the branch water pipe penetrates the top surface of the expansion pipe part to connect the ring-shaped pipeline, and the ring-shaped pipeline and the water supply pipe one supply water to the sealing nozzle one.

[0012] Further, the branch water pipe, the ring-shaped pipeline and the water supply pipe one are made of corrosion-resistant metal pipes.

[0013] The corrosion-resistant metal pipe avoids pipeline corrosion leakage, and comprises a corrosion-resistant plastic layer arranged on the inner surface of the pipeline.

[0014] Further, the sealing nozzle one comprises a shell, a connecting plate is arranged in the shell, a connecting hole and a plurality of water passing openings are formed in the connecting plate, a limiting connecting rod penetrating through the connecting hole is arranged on the top of the valve body, and the elastic reset unit is arranged between the limiting connecting rod and the connecting plate.

[0015] The connecting plate arranged in the shell is used for connecting and limiting the elastic reset unit and the valve body, the water passing openings are convenient for water flow, the limiting connecting rod and the connecting hole are in sliding fit, the valve body can move up and down, and the elastic reset unit is used for moving the valve body upward to close the water outlet.

[0016] Further, a tapered water outlet is formed in the bottom of the shell, and the valve body comprises a conical surface structure used for cooperating with the tapered water outlet.

[0017] The tapered water outlet is convenient for cooperating with the conical surface structure of the valve body to block and spray water along the conical surface structure.

[0018] Further, the upper part of the pipe expansion part is in a cylindrical structure, and a plurality of the sealing nozzle one is arranged in a circular ring shape.

[0019] The pipe expansion part is in a cylindrical structure, the structure is simple, the branch water pipe is convenient to connect, the sealing nozzle one is arranged in a circular ring shape, and the pipe expansion part side wall is convenient to spray and flush.

[0020] Further, the flushing valve one comprises an electromagnetic valve, and the electromagnetic valve is electrically connected with a timing controller.

[0021] The timing controller can adjust and control the time period of opening of the electromagnetic valve and the length of single opening, and the pipeline automatic flushing is convenient to realize.

[0022] Further, the water drain device comprises a water tank, a partition plate is arranged in the water tank, the partition plate divides the water tank into a water chamber one and a water chamber two, the water chamber one is connected with a water inlet pipe, the top end of the water inlet pipe is connected with the drain pipe, the bottom end of the water inlet pipe is located at the lower part of the water chamber one, the drain outlet is connected with the bottom of the water chamber one, the upper part of the partition plate is connected with a communication pipe, the bottom end of the communication pipe is located at the lower part of the water chamber two, and the water chamber two is connected with a water outlet pipe.

[0023] The water tank is used for storing water, the bottom end of the water inlet pipe is connected to the bottom of the water chamber one, liquid sealing of the bottom end of the drain pipe is realized, coal gas leakage is avoided, the partition plate and the communication pipe further improve the liquid sealing effect, the excess water in the water chamber one enters the water chamber two through the communication pipe, when the drain pipe is flushed, the excess water is discharged from the water outlet pipe of the drain, the dregs settle at the bottom of the water chamber one and can be discharged from the drain outlet.

[0024] Further, the top end of the drain pipe is provided with a second cone, and the second cone is connected with the bottom surface of the coal gas pipeline.

[0025] The second cone is arranged on the drain pipe, which is convenient for collecting the condensed water in the coal gas pipeline and discharging the water from the drain pipe, so that the drain pipe outlet is prevented from being blocked.

[0026] Further, a second sealing nozzle is arranged at the second cone, a second water supply pipe is connected with the second sealing nozzle, and a second flushing valve is connected with the second water supply pipe, and the second flushing valve is connected with a high-pressure water source.

[0027] The second sealing nozzle is arranged to flush the second cone, so that the inlet of the drain pipe is prevented from being blocked, the second flushing valve is used for controlling the flushing work, and the structure of the second flushing valve is the same as that of the first flushing valve.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] 1. The first sealing nozzle and the first water supply pipe are arranged on the drain pipe, so that the inner wall of the drain pipe is flushed, the pipe is prevented from being blocked and leaking due to the accumulation of dregs on the inner wall of the drain pipe, and the stability of the drain pipe is improved;

[0030] 2. When the drain pipe needs to be cleaned, the flushing work of the inner wall of the drain pipe can be realized by controlling the flushing valve, the dregs after flushing settle at the bottom of the drain, and are discharged from the drain outlet, so that the operation of the coal gas pipeline is not affected, there is no risk of coal gas leakage, and the cleaning is convenient; the water used for flushing can directly supplement the water level in the drain, and the drain itself does not need to be frequently watered;

[0031] 3. The observation window is arranged on the lower side of the second cone, so that the adhesion of the dregs on the inner wall of the drain pipe can be observed in real time, and the flushing condition can be observed by observing the transparency of the flushing water during flushing;

[0032] 4. The normally closed valve one is arranged on the sealing nozzle, so that the backflow of coal gas from the first water supply pipe and the blockage of the nozzle outlet by dregs are avoided, and the stability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structural schematic view of embodiment 1 of the present application;

[0034] Figure 2Figure 1 is a schematic view of the installation of the annular pipeline in the embodiment 1 of the present application;

[0035] Figure 3 Figure 2 is an enlarged view of the structure of the sealing nozzle 1 in the embodiment 1 of the present application;

[0036] Figure 4 Figure 3 is a schematic view of the connection of the flushing valve 2 in the embodiment 2 of the present application;

[0037] Figure 1 is a schematic view of the installation of the annular pipeline in the embodiment 1 of the present application; DETAILED DESCRIPTION

[0038] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In the description of the present application, it should be noted that the terms front, back, left, right, etc. indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application or simplifying the description, and cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0039] Embodiment 1

[0040] As Figures 1-3As shown, the self-cleaning device of the drain pipe 2 of the coke oven gas pipeline 1 in the embodiment comprises the gas pipeline 1 and the drain pipe 2 connected to the bottom surface of the gas pipeline 1, the drain pipe 2 is provided with an expansion pipe part 3, the bottom of the expansion pipe part 3 is provided with a conical hopper 1, a plurality of sealing nozzles 1 are arranged in the expansion pipe part 3, a normally closed valve is arranged at the water outlet of the sealing nozzle 1, the normally closed valve comprises a valve body 6 and an elastic reset unit 7 connected to the valve body 6, the sealing nozzle 1 is connected with a water supply pipe 1, the water supply pipe 1 is provided with a flushing valve 1, the flushing valve 1 is connected with a high-pressure water source, the drain pipe 2 is provided with an observation window 21, the observation window 21 is located on the lower side of the conical hopper 1, and the bottom end of the drain pipe 2 is connected with a drain device, and the bottom of the drain device is provided with a blow-off port 11.

[0041] In the above scheme, the drain pipe 2 is used to collect the accumulated water in the gas pipeline 1 and discharge the accumulated water to the drain device, the sealing nozzle 1 is installed by arranging the expansion pipe part 3 on the drain pipe 2, the spraying and flushing work of the sealing nozzle 1 is controlled by the flushing valve 1 on the water supply pipe 1, the conical hopper 1 is arranged to facilitate the downward flushing of the slag into the drain device, and the slag is finally discharged from the blow-off port 11 of the drain device, so as to avoid pipeline blockage and corrosion, the elastic reset unit 7 of the normally closed valve is used to block the water outlet by the valve body 6 in the non-flushing state, so as to avoid the backflow of gas from the water pipe and the blockage of the water outlet by the slag. The observation window 21 is arranged to facilitate the direct observation of the slag adhesion condition inside the drain pipe 2 and the clarity degree of the water flow during flushing, so as to correspondingly adjust the flushing time and frequency. The sealing nozzle 1, the water supply pipe 1, the flushing valve 1 and the high-pressure water source constitute a flushing system, the flushing system is arranged in the drain pipe 2, so as to ensure that the slag in the drain pipe 2 is timely discharged to the drain device and discharged from the blow-off port 11, thereby avoiding pipeline blockage and pipeline corrosion and leakage.

[0042] The diameter of the expansion pipe part 3 is greater than the diameter of the drain pipe 2, so as to facilitate the installation of the sealing nozzle 1 and avoid pipeline blockage. The blow-off valve is arranged at the blow-off port 11, and the valve is opened when blow-off is needed.

[0043] The installation of the self-cleaning device of the drain pipe 2 can flush the slag adhered to the pipe wall of the drain pipe 2 online, an observation window 21 is arranged near the pipe at the bottom of the conical hopper 1, the accumulated slag condition of the pipe is observed, the high-pressure water valve is opened when the pipe has accumulated slag, the high-pressure water valve dilutes and flushes the slag on the pipe wall until the flushing water transparency at the observation window 21 position reaches the requirement, and then the water valve is closed.

[0044] The spray head adopts a spring sealed piston spray head. During the flushing process, the spray head is opened, and when the flushing is stopped, the spray head is sealed. The spray head to the valve forms an effective water seal height, preventing the backflow of gas to the water pipe. The flushing valve 9 is an explosion-proof electric stop valve, and the valve can be remotely operated. The operator can open the valve to flush and clean the slag in the gas pipeline 1 according to the slag accumulation in the gas pipeline 1. After closing the upper inlet valve 35 of the drain, the accumulated slag can be cleaned through the drain outlet 11, and the cleaning can be performed online.

[0045] The coke oven gas pipeline 1 of the company has a normal pressure pipeline and a pressurized pipeline. The gas pressure of the normal pressure pipeline is about 8kpa, and the effective water seal height of the wet type drain installed on the pipeline is 4m, that is, the pressure is 40kpa. The flushing water can be selected from a high pressure water source of 20-30kpa. The water flow of the pipeline is determined according to the volume of the drain to ensure that the overflow pipe of the drain is unobstructed and does not affect the water seal effect in the drain. The high pressure flushing water can replace the water supply pipe 32 of the drain to save a water source pipeline in the process.

[0046] In the embodiment, a plurality of sealing spray heads 5 are arranged in the expansion pipe portion 3 in a ring shape. The top of the sealing spray head 5 is connected with a branch water pipe 12. The branch water pipe 12 is connected with a ring-shaped pipeline 13 located outside the expansion pipe portion 3. The ring-shaped pipeline 13 is connected with the water supply pipe 8.

[0047] By arranging the sealing spray head 5 in a ring shape, the slag falling is not affected, and the side wall of the expansion pipe portion 3 is conveniently flushed. The branch water pipe 12 penetrates the top surface of the expansion pipe portion 3 to connect the ring-shaped pipeline 13. The ring-shaped pipeline 13 and the water supply pipe 8 supply water to the sealing spray head 5.

[0048] The distribution shape of the plurality of sealing spray heads 5 matches the shape of the side wall of the expansion pipe portion 3, and can be arranged in a circular ring or a rectangular ring. The sealing spray head 5, the branch water pipe 12 and the drain pipe 2 are arranged in a staggered manner in the length direction to avoid affecting the slag falling.

[0049] In the embodiment, the branch water pipe 12, the ring-shaped pipeline 13 and the water supply pipe 8 use a corrosion-resistant metal pipe.

[0050] The use of a corrosion-resistant metal pipe avoids pipeline corrosion and leakage. The corrosion-resistant metal pipe includes a corrosion-resistant plastic layer arranged on the inner surface of the metal pipe.

[0051] The corrosion-resistant metal pipe includes a polytetrafluoroethylene plastic layer bonded to the inner surface of the metal pipe.

[0052] In the embodiment, the sealing nozzle one 5 comprises a shell 14, a connecting plate 15 is arranged in the shell 14, a connecting hole 16 and a plurality of water passing openings 17 are formed in the connecting plate 15, a limiting connecting rod 18 is arranged on the top of the valve body 6 and passes through the connecting hole 16, and the elastic reset unit 7 is arranged between the limiting connecting rod 18 and the connecting plate 15.

[0053] The connecting plate 15 is arranged in the shell 14 to connect and limit the elastic reset unit 7 and the valve body 6, the water passing openings 17 are convenient for water flow, the limiting connecting rod 18 is in sliding fit with the connecting hole 16, the valve body 6 can move up and down, and the elastic reset unit 7 is used to move the valve body 6 upward to close the water outlet.

[0054] The top end of the limiting connecting rod 18 is provided with a limiting structure 34, the limiting structure 34 can be plate-shaped or block-shaped, and the elastic reset unit 7 is a compression spring.

[0055] In the embodiment, a tapered water outlet 19 is formed in the bottom of the shell 14, and the valve body 6 comprises a conical surface structure 20 used to cooperate with the tapered water outlet 19.

[0056] The tapered water outlet 19 is arranged to cooperate with the conical surface structure 20 of the valve body 6 to block and spray water along the conical surface structure 20.

[0057] In the embodiment, the upper part of the expansion pipe part 3 is in cylindrical structure, and a plurality of the sealing nozzle one 5 is arranged in a circular ring.

[0058] The expansion pipe part 3 is in cylindrical structure, which is simple in structure and convenient for connecting the branch water pipe 12, and the sealing nozzle one 5 is arranged in a circular ring, which is convenient for spraying the side wall of the expansion pipe part 3 and washing the side wall of the drain pipe 2.

[0059] In the embodiment, the washing valve one 9 comprises an electromagnetic valve, and the electromagnetic valve is electrically connected with a timing controller.

[0060] The timing controller can be used to adjust and control the time period of opening of the electromagnetic valve and the length of time of single opening, which is convenient for realizing automatic washing of the pipeline.

[0061] The timing controller is DH48S-S.

[0062] In this embodiment, the drainer includes a water tank 10, and a partition 23 is provided inside the water tank 10. The partition 23 divides the water tank 10 into a first water chamber 24 and a second water chamber 25. The first water chamber 24 is connected to an inlet pipe 26. The top end of the inlet pipe 26 is connected to a drain pipe 2, and the bottom end of the inlet pipe 26 is located at the lower part of the first water chamber 24. The drain outlet 11 is connected to the bottom of the first water chamber 24. A connecting pipe 27 is connected to the upper part of the partition 23. The bottom end of the connecting pipe 27 is located at the lower part of the second water chamber 25. The second water chamber 25 is connected to an outlet pipe 28.

[0063] Water tank 10 is used to store water. The bottom end of water inlet pipe 26 is connected to the bottom of water chamber 1 24 to achieve liquid seal at the bottom of drain pipe 2 and prevent gas leakage. The partition 23 and connecting pipe 27 are set to further improve the liquid seal effect. Excess water in water chamber 1 24 enters water chamber 25 through connecting pipe 27. When drain pipe 2 is flushed, excess water is discharged from drain outlet pipe 28. Debris settles to the bottom of water chamber 1 24 and can be discharged from drain outlet 11.

[0064] The drainer is also connected to a water supply pipe 32 for replenishing water and an air vent valve 33 for venting air from the water tank 10.

[0065] In this embodiment, a cone hopper 29 is provided at the top of the drain pipe 2, and the cone hopper 29 is connected to the bottom surface of the gas pipeline 1.

[0066] A cone hopper 29 is installed on the drain pipe 2 to facilitate the collection of condensate in the gas pipeline 1, so that the water can be discharged from the drain pipe 2 and the drain pipe 2 opening can be prevented from being blocked.

[0067] Example 2

[0068] like Figure 4 As shown, the self-cleaning device for the coke oven gas pipeline 1 and drain pipe 2 in this embodiment is a further optimization based on embodiment 1:

[0069] In this embodiment, a sealing nozzle 30 is provided at the cone 29, the sealing nozzle 30 is connected to a water supply pipe 31, the water supply pipe 31 is connected to a flushing valve 22, and the flushing valve 22 is connected to a high-pressure water source.

[0070] The cone hopper 29 is flushed by a sealing nozzle 2 30 to prevent blockage at the inlet of the drain pipe 2. The flushing valve 22 is used to control the flushing operation, and its structure is the same as that of the flushing valve 1 9. The cone hopper 29 can prevent flushing water from flowing into the gas pipeline 1.

[0071] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A coke oven gas pipeline drain self-cleaning device, characterized in that, The utility model provides a coal gas pipeline and the drain pipe connected in the bottom of coal gas pipeline, be provided with the expansion pipe portion on the drain pipe, the bottom of expansion pipe portion is provided with the cone one, be provided with a plurality of sealing shower nozzles one in expansion pipe portion, a plurality of sealing shower nozzles one are along annular and located in expansion pipe portion, the top of sealing shower nozzle one is connected with branch water pipe, branch water pipe is connected with annular pipeline located in the outside of expansion pipe portion, annular pipeline is connected with water supply pipe one, the upper portion of expansion pipe portion is cylindrical structure, sealing shower nozzle one, branch water pipe and the length direction of drain pipe are staggered arrangement, avoid the influence of cinder falling; The water outlet of the sealing shower nozzle one is provided with a normally closed valve, the normally closed valve includes a valve body and an elastic reset unit connected with the valve body, the sealing shower nozzle one is connected with the water supply pipe one, the water supply pipe one is provided with a flushing valve one, the flushing valve one is connected with a high-pressure water source, the drain pipe is provided with an observation window, the observation window is located below the cone one, the bottom end of the drain pipe is connected with a drain, and the bottom of the drain is provided with a sewage outlet. The drain includes a water tank, the water tank is provided with a partition plate, the partition plate divides the water tank into water chamber one and water chamber two, the water chamber one is connected with a water inlet pipe, the top end of the water inlet pipe is connected with the drain pipe, the bottom end of the water inlet pipe is located below the water chamber one, the sewage outlet is connected with the bottom of the water chamber one, the upper part of the partition plate is connected with a communication pipe, the bottom end of the communication pipe is located below the water chamber two, the water chamber two is connected with a water outlet pipe, the top end of the drain pipe is provided with a cone two, the cone two is connected with the bottom of the coal gas pipeline, the cone two is provided with a sealing shower nozzle two, the sealing shower nozzle two is connected with a water supply pipe two, the water supply pipe two is connected with a flushing valve two, and the flushing valve two is connected with a high-pressure water source.

2. The coke oven gas pipeline drain self-cleaning device according to claim 1, characterized in that, The branch water pipe, annular pipeline and water supply pipe one use corrosion-resistant metal pipes.

3. The coke oven gas pipeline drain self-cleaning device according to claim 1, characterized in that, The sealing shower nozzle one includes a shell, the shell is provided with a connecting plate, the connecting plate is provided with a connecting hole and a plurality of water inlets, the top of the valve body is provided with a limiting connecting rod penetrating through the connecting hole, and the elastic reset unit is arranged between the limiting connecting rod and the connecting plate.

4. The coke oven gas pipeline drain self-cleaning device according to claim 3, characterized in that, The bottom of the shell is provided with a conical water outlet, and the valve body includes a conical surface structure matched with the conical water outlet.

5. The coke oven gas pipeline drain self-cleaning device according to claim 1, characterized in that, The flushing valve one includes a solenoid valve, and the solenoid valve is electrically connected with a timing controller.

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