阅读说明：本技术 一种用于煤气管道负压段的清洗装置 (Cleaning device for negative pressure section of gas pipeline ) 是由 范孝豆 邵志伟 许振法 刘洋 胡继园 于 2021-02-01 设计创作，主要内容包括：本发明公开了一种用于煤气管道负压段的清洗装置,涉及焦化设备技术领域,包括高压清洗设备和高压清洗枪头,高压清洗设备通过软管与高压清洗枪头连接,还包括正压防泄漏装置和煤气管道,煤气管道顶部设置进液管口,进液管口与正压防泄漏装置连接,高压清洗枪头和软管穿过正压防泄漏装置和进液管口伸入煤气管道内进行冲洗,煤气管道的底部设置下液管口,下液管口连接下液管道,下液管道上设置控制阀门,下液管道置于可移动式水封槽内。本发明的用于煤气管道负压段的清洗装置,在确保不停车产的前提下实现对负压段煤气管道、正压段煤气管道及设备内部沉积物的安全清洗,解决负压段煤气管线内部沉积物不能在正常生产下实现彻底清理的技术问题。(The invention discloses a cleaning device for a negative pressure section of a gas pipeline, which relates to the technical field of coking equipment and comprises high-pressure cleaning equipment and a high-pressure cleaning gun head, wherein the high-pressure cleaning equipment is connected with the high-pressure cleaning gun head through a hose, the cleaning device also comprises a positive pressure leakage prevention device and the gas pipeline, a liquid inlet pipe orifice is arranged at the top of the gas pipeline and is connected with the positive pressure leakage prevention device, the high-pressure cleaning gun head and the hose penetrate through the positive pressure leakage prevention device and the liquid inlet pipe orifice and extend into the gas pipeline for washing, a liquid outlet pipe orifice is arranged at the bottom of the gas pipeline and is connected with a liquid outlet pipeline, a control valve is arranged on the liquid outlet pipeline, and the. The cleaning device for the negative pressure section of the gas pipeline realizes safe cleaning of the deposits in the negative pressure section gas pipeline, the positive pressure section gas pipeline and equipment on the premise of ensuring non-stop production, and solves the technical problem that the deposits in the negative pressure section gas pipeline can not be thoroughly cleaned under normal production.)

1. The utility model provides a belt cleaning device for gas pipeline negative pressure section, includes high-pressure cleaning equipment and high-pressure cleaning rifle head, high-pressure cleaning equipment passes through the hose and is connected its characterized in that with high-pressure cleaning rifle head: the high-pressure cleaning gun head and the hose penetrate through the positive-pressure leakage prevention device and the liquid inlet pipe orifice to extend into the gas pipeline for washing, a liquid discharging pipe orifice is arranged at the bottom of the gas pipeline and connected with a liquid discharging pipeline, a control valve is arranged on the liquid discharging pipeline, and the liquid discharging pipeline is arranged in a movable water seal groove.

2. The cleaning device for the negative pressure section of the gas pipeline as claimed in claim 1, wherein: the positive pressure leakage-proof device comprises a leakage-proof cylinder, a first sealing valve, a second sealing valve and a nitrogen pipeline, wherein the first sealing valve and the second sealing valve are arranged at two ends of the leakage-proof cylinder respectively, the nitrogen pipeline is arranged on the side surface of the leakage-proof cylinder, and the nitrogen pipeline is provided with the valves.

3. The cleaning device for the negative pressure section of the gas pipeline as claimed in claim 2, wherein: the pressure gauge is arranged on the leakage-proof cylinder and monitors the air pressure in the leakage-proof cylinder in real time.

4. A cleaning method for a negative pressure section of a gas pipeline is characterized by comprising the following steps:

(1) during cleaning, a nitrogen valve is opened to fill nitrogen into the leakage-proof cylinder, and a pressure gauge is observed to enable the leakage-proof cylinder to be in a micro-positive pressure state, so that air can be effectively prevented from entering the gas pipeline;

(2) slowly opening the first sealing valve, putting the high-pressure cleaning gun head into the anti-leakage cylinder, slowly opening the second sealing valve, and allowing the high-pressure cleaning gun head to enter the gas pipeline to clean the interior of the gas pipeline;

(3) the liquid discharging pipeline of the gas pipeline is connected with the movable water seal tank through a control valve, and impurities such as tar, naphthalene, coal powder, coke powder and the like in the gas pipeline are separated and diluted under the flushing of high-pressure water and automatically flow into the movable water seal tank along with the flushing water.

Technical Field

The invention relates to the technical field of coking equipment, in particular to a cleaning device for a negative pressure section of a gas pipeline.

Background

In the actual production process of a coking plant, coke oven gas contains a large amount of impurities such as tar, coal powder, coke powder and the like, and the substances are easy to accumulate, hang on the wall and deposit in a pipeline along with the change of the flow rate and the temperature of the gas, and the deposit in the pipeline increases along with the lapse of time, so that the inner diameter of the gas pipeline is reduced and blocked, the resistance of a gas system is increased, and the conveying safety of the gas is seriously threatened; more serious, tar and coal powder in the coal gas have certain cohesiveness and extremely poor liquidity, the traditional cleaning mode is heating and steaming and blowing by using steam, the cleaning effect is poor, potential safety and environmental protection hazards exist, and the effective cleaning can not be carried out particularly at the positions of bridge pipes, bent pipes and the like of a negative pressure section of a coal gas pipeline. How to realize the online cleaning of the negative pressure section of the gas pipeline on the premise of ensuring safe and stable production always becomes a development problem which troubles coke-oven plants, so that an online cleaning device for the negative pressure section of the gas pipeline is urgently needed to solve the technical problem.

Disclosure of Invention

The invention aims to provide a cleaning device which can clean a negative pressure section of a gas pipeline on line.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the cleaning device for the negative pressure section of the gas pipeline comprises a high-pressure cleaning device, a high-pressure cleaning gun head, a positive-pressure leakage preventing device and the gas pipeline, wherein the high-pressure cleaning device is connected with the high-pressure cleaning gun head through a hose, the positive-pressure leakage preventing device and the gas pipeline are arranged at the top of the gas pipeline, the liquid inlet pipe orifice is connected with the positive-pressure leakage preventing device, the high-pressure cleaning gun head and the hose penetrate through the positive-pressure leakage preventing device and the liquid inlet pipe orifice to stretch into the gas pipeline for washing, a liquid discharging pipe orifice is arranged at the bottom of the gas pipeline and connected with a liquid discharging pipeline, a control valve is arranged on the liquid discharging pipeline, and.

Preferably, the positive pressure leakage-proof device comprises a leakage-proof cylinder, a first sealing valve, a second sealing valve and a nitrogen pipeline, wherein the first sealing valve and the second sealing valve are respectively arranged at two ends of the leakage-proof cylinder, the nitrogen pipeline is arranged on the side surface of the leakage-proof cylinder, and the nitrogen pipeline is provided with the valves.

Preferably, the pressure gauge is arranged on the leakage-proof cylinder and monitors the air pressure in the leakage-proof cylinder in real time.

A cleaning method for a negative pressure section of a gas pipeline comprises the following steps:

(1) during cleaning, a nitrogen valve is opened to fill nitrogen into the leakage-proof cylinder, and a pressure gauge is observed to enable the leakage-proof cylinder to be in a micro-positive pressure state, so that air can be effectively prevented from entering the gas pipeline;

(2) slowly opening the first sealing valve, putting the high-pressure cleaning gun head into the anti-leakage cylinder, slowly opening the second sealing valve, and allowing the high-pressure cleaning gun head to enter the gas pipeline to clean the interior of the gas pipeline;

(3) the liquid discharging pipeline of the gas pipeline is connected with the movable water seal tank through a control valve, and impurities such as tar, naphthalene, coal powder, coke powder and the like in the gas pipeline are separated and diluted under the flushing of high-pressure water and automatically flow into the movable water seal tank along with the flushing water.

By adopting the technical scheme of the invention, the following beneficial effects can be obtained:

the cleaning device for the negative pressure section of the gas pipeline realizes safe cleaning of the deposits in the negative pressure section gas pipeline, the positive pressure section gas pipeline and equipment on the premise of ensuring non-stop production, and solves the technical problem that the deposits in the negative pressure section gas pipeline can not be thoroughly cleaned under normal production.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic structural view of the cleaning apparatus;

the labels in the above figures are: 1. a gas pipeline; 2. a liquid inlet pipe orifice; 3. a second sealing valve; 4. a leakage prevention cylinder; 5. a first sealing valve; 6. a nitrogen gas pipeline; 7. a valve; 8. a pressure gauge; 9. a hose; 10. high pressure cleaning equipment; 11. cleaning the gun head at high pressure; 12. a liquid outlet pipe orifice; 13. a control valve; 14. a liquid discharge pipeline; 15. movable water seal tank.

Detailed Description

The embodiments of the present invention, such as the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, will be described in further detail below with reference to the accompanying drawings.

As shown in figure 1, the cleaning device for the negative pressure section of the gas pipeline is characterized in that a liquid inlet pipe orifice 2 for connecting a high-pressure cleaning device 10 is arranged at the top of the gas pipeline 1, a lower liquid pipe orifice 12 for discharging water is arranged at the bottom close to the ground, the high-pressure cleaning device 10 is connected with the liquid inlet pipe orifice 2 through a positive pressure leakage-proof device, a high-pressure cleaning gun head 11 is further arranged at the output end of the high-pressure cleaning device 10, a hose 9 connecting the high-pressure cleaning gun head 11 with the high-pressure cleaning device 10 penetrates through the leakage-proof cylinder 4 and the liquid inlet pipe orifice 2, the high-pressure cleaning gun head 11 is arranged in the gas pipeline 1, a movable water seal groove 15 for receiving cleaning waste liquid is arranged at the output end of the lower liquid pipe orifice 12, two sealing valves 3 and one sealing valve 5 are respectively arranged at two ends of the leakage-proof cylinder 4, a nitrogen pipeline, the side of the anti-leakage cylinder 4 close to the nitrogen pipeline 6 is also provided with a pressure gauge 8, and a control valve 13 is arranged between the output end of the lower liquid pipe orifice 12 and the movable water seal groove 15.

When in use, the outlet of the high-pressure cleaning device 10 is connected with the inlet of the high-pressure cleaning hose 9, the tail part of the high-pressure cleaning hose 9 is provided with a high-pressure cleaning gun head 11, the nitrogen valve 7 is opened to charge nitrogen into the leakage-proof cylinder 4 during cleaning, the pressure gauge 8 is observed to ensure that the leakage-proof cylinder 4 is in a micro-positive pressure state, air can be effectively discharged, air is prevented from entering the gas pipeline 1, the first sealing valve 5 is slowly opened, the high-pressure cleaning gun head 11 enters the leakage-proof cylinder 4, the second sealing valve 3 is slowly opened, the high-pressure cleaning gun head 11 enters the gas pipeline 1 to clean the inside of the gas pipeline 1, the lower liquid pipe orifice 12 of the gas pipeline is connected with the movable water-sealed tank 15 through the control valve 13, impurities such as tar, naphthalene, coal powder, coke powder and the like in the gas pipeline 1 are separated and diluted under the flushing of high-pressure water and automatically flow into, finally, safe cleaning of deposits in the negative pressure section gas pipeline, the positive pressure section gas pipeline and the equipment is realized.

By adopting the technical scheme, the safe cleaning of the deposits in the negative pressure section gas pipeline, the positive pressure section gas pipeline and the equipment is realized on the premise of ensuring the non-stop production, and the technical problem that the deposits in the negative pressure section gas pipeline can not be thoroughly cleaned under the normal production is solved.

The continuous cleaning and replacement and the recovery of the sediments in the gas pipeline are realized in the process of cleaning the gas pipeline, and the environmental protection accidents can be effectively avoided. The positive pressure leakage-proof device can effectively prevent air from entering the gas pipeline 1 and gas leakage accidents from happening, and meanwhile, high-pressure water is used for cleaning in the cleaning process, no spark is generated, and static electricity cannot be generated, so that the positive pressure leakage-proof device is safer and more reliable.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.