CN216397410U - Combined multifunctional cleaning equipment special for gas pipeline maintenance - Google Patents

Abstract

The utility model discloses combined multifunctional cleaning equipment special for gas pipeline maintenance, which comprises a rear gas pipeline of a fan and a waste liquid collecting box, wherein a blind end flange is arranged at one end of the rear gas pipeline of the fan, a high-pressure water spraying pipe is connected and arranged on the blind end flange, a high-pressure cleaning machine is connected and arranged at the end part, far away from the blind end flange, of the high-pressure water spraying pipe, a hot ammonia spraying pipe is connected and arranged at the top of the rear gas pipeline of the fan, a drain pipe is connected and arranged at the bottom of the rear gas pipeline of the fan, a fusant drain outlet is arranged on the drain pipe, the waste liquid collecting box is arranged under the fusant drain outlet, and a steam pipe is connected and arranged on the drain pipe. The utility model has the following advantages: the cleaning device has the advantages of reasonable structural design, good cleaning effect, cleanness, environmental protection, low use cost, and good popularization prospect and market value.

Description

Combined multifunctional cleaning equipment special for gas pipeline maintenance

Technical Field

The utility model relates to a combined multifunctional cleaning device special for gas pipeline maintenance.

Background

The raw gas of coking enterprises needs to be purified to meet the use requirements of users, and the raw gas contains products such as tar, crude benzol and the like which need to be recovered, a chemical product workshop is the main place for gas purification and chemical product recovery, the raw gas contains impurities such as tar, naphthalene, coal powder and the like because of not being processed, and after long-time operation, a pipeline is extremely easy to block, so that the pipeline resistance is increased, the system resistance is increased, the fan load is increased, the safety and the stable operation of a gas treatment system can be influenced by overlarge system resistance, and safety and environmental protection accidents are easy to occur. The gas pipeline (DN 1000mm) runs for a long time, tar, naphthalene and coal powder substances are deposited at the position, the pipeline is seriously blocked, even the tar, the naphthalene and the coal powder substances reach 1/2 of the inner diameter of the pipeline, the load of equipment is increased, the resistance of the whole system is obviously increased, the resistance of the horizontal pipe section at the rear of the machine is up to 2kpa (the length is 25.5m), the pressure at the rear of an air blower is up to 23kpa, potential safety hazards exist, the gas pipeline is blocked, the gas passing is influenced, the suction force before a primary cooler is difficult to improve, the raw coke oven gas is difficult to lead out, and smoke is serious during coal charging.

How to provide a combination formula multi-functional cleaning equipment who is exclusively used in gas pipeline overhauls becomes research direction.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the background technology and provides combined multifunctional cleaning equipment special for gas pipeline maintenance.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: the utility model provides a multi-functional cleaning equipment of combination formula of gas piping maintenance is exclusively used in, gas piping, waste liquid collecting box behind the fan, gas piping's behind the fan one end is provided with the blind end flange, the connection is provided with high-pressure water shower on the blind end flange, high-pressure water shower is kept away from the end connection of blind end flange is provided with high pressure cleaner, gas piping's behind the fan top connection is provided with hot ammonia water shower, gas piping's behind the fan bottom connection is provided with the blow off pipe, be provided with DN 250's fuse drain on the blow off pipe, waste liquid collecting box set up in under the fuse drain, the connection is provided with the steam pipe on the blow off pipe.

Preferably, a slurry pump is connected to the bottom of the waste liquid collecting box.

Preferably, the high-pressure water spraying pipe is provided with a high-pressure water cleaning hole DN 150.

Preferably, the hot ammonia water spray pipe is provided with a hot ammonia water washing hole DN 50.

As a preferable scheme, the end part of the hot ammonia spray pipe, which is far away from the gas pipeline behind the fan, is connected with a self-circulation ammonia water tank.

As a preferred scheme, a gas discharge pipe is connected and arranged above the gas pipeline behind the fan.

Preferably, the steam pipe is provided with a steam port.

The utility model has the following advantages: the cleaning device has the advantages of reasonable structural design, good cleaning effect, cleanness, environmental protection, low use cost, and good popularization prospect and market value.

Drawings

Fig. 1 is a schematic structural diagram of combined multifunctional cleaning equipment special for gas pipeline maintenance.

As shown in the figure: 1. the device comprises a gas pipeline behind a fan, 2, a waste liquid collecting box, 3, a blind end flange, 4, a high-pressure water spray pipe, 5, a high-pressure cleaning machine, 6, a hot ammonia spray pipe, 7, a blow-off pipe, 8, a melt blow-off port, 9, a steam pipe, 10, a slurry pump, 11, a high-pressure water cleaning hole, 12, a hot ammonia water cleaning hole, 13, a self-circulation ammonia water tank, 14, a gas discharge pipe, 15 and a steam port.

In the figure, the dotted arrow indicates the gas flow, and the arrow on the right side of the slurry pump leads to the mechanical clarifying tank.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings.

Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

With reference to the attached drawings, the combined multifunctional cleaning equipment special for gas pipeline maintenance comprises a fan rear gas pipeline 1 and a waste liquid collecting box 2, wherein a blind flange 3 is arranged at one end of the fan rear gas pipeline 1, a high-pressure water spray pipe 4 is connected and arranged on the blind flange 3, the high-pressure water spray pipe 4 is far away from the end part of the blind flange 3 and is provided with a high-pressure cleaning machine 5, a hot ammonia spray pipe 6 is connected and arranged at the top of the fan rear gas pipeline 1, a drain pipe 7 is connected and arranged at the bottom of the fan rear gas pipeline 1, a fusant drain outlet 8 of DN250 is arranged on the drain pipe 7, the waste liquid collecting box 2 is arranged under the fusant drain outlet 8, and a steam pipe 9 is connected and arranged on the drain pipe 7.

As a preferred embodiment of the embodiment, a mud pump 10 is connected to the bottom of the waste liquid collecting tank 2.

As a preferred embodiment of this embodiment, the high-pressure water spray pipe 4 is provided with a high-pressure water cleaning hole 11 of DN 150.

As a preferred embodiment of the embodiment, the hot ammonia water spray pipe 6 is provided with a hot ammonia water flushing hole 12 of DN 50.

As a preferred embodiment of this embodiment, a self-circulating ammonia water tank 13 is connected to the end of the hot ammonia water spray pipe 6 away from the fan rear gas pipeline 1.

As a preferred embodiment of the present embodiment, a gas discharge pipe 14 is connected to the upper portion of the fan rear gas pipeline 1.

As a preferred embodiment of this embodiment, the steam pipe 9 is provided with a steam port 15.

In the particular practice of the present invention,

1. and erecting a scaffold at one end of the on-line cleaned gas pipeline.

2. And (3) pressing and opening DN150/DN250/DN50 holes under pressure under the lower end of the gas pipeline blind plate and right below and above the gas pipeline which is about one meter away from the blind plate, and installing a qualified gate valve.

3. The rear end of a DN50 valve with a pressure opening is connected with a temporary pipe and is connected with the outlet of a circulating ammonia water pump. During construction, ammonia water at about 80 deg.c is used to flush naphthalene, tar, coal powder and other impurity from the gas pipeline.

4. DN100 is connected with the rear end of the DN250 valve with the pressure hole to quickly open the ball valve so as to cut off the leaked gas in time. The back end of the ball valve is connected with the temporary steel wire black rubber tube and returns to the waste liquid collecting box, ammonia water with one meter high liquid level is stored in the waste liquid collecting box in advance, and the pipe orifice of the sewage discharge steel wire black rubber tube is placed below the liquid level of the ammonia water to play a certain liquid sealing role. And steam inlet short joints are respectively welded at the front end and the rear end of the DN100 ball valve, and valves are installed. Naphthalene, tar blocks, coal powder and the like block the sewage discharge pipe in the cleaning process so as to introduce steam in time for heating and dredging, and the discharge is smooth.

5. The high-pressure water spray head is arranged on the high-pressure water hose and is placed in the cleaning and sealing device pipe. The cleaning and sealing device is arranged at the rear end of a DN150 valve with a hole opened on a blind plate of the pipeline under pressure, the DN150 valve is opened to introduce system coal gas, the system is subjected to sealing pressure test, and after no coal gas leaks, the preparation work is finished.

6. After the preparation work is completed, the high-pressure water cleaning personnel wear safety belt, long-tube respirator and other labor protection articles, and open the upper DN50 safety flushing valve and the lower DN250 blowdown valve of the gas pipeline. Starting the cleaning vehicle to adjust proper cleaning pressure (60-90MPa), cleaning the high-pressure cleaning machine to run the hot vehicle in a test mode, simulating to clean the pipeline, and checking whether the high-pressure water cleaning system is in good condition.

7. When cleaning construction is carried out, the special cleaning spray head is slowly placed inside the gas pipeline, the high-pressure water spray pipe is slowly pulled back, the high-pressure water spray pipe moves in a small amount, the high-pressure water spray pipe moves back and forth, when the spray head is pulled to a position near a drain pipe of a main pipeline, an ammonia water spray pump is timely started to dilute cleaned naphthalene, tar, coal powder and other substances, then a DN100 ball valve is started, and the cleaned and diluted naphthalene, coal powder, tar and other substances are timely discharged. Naphthalene, coal powder, tar and other substances discharged into the waste liquid collecting box need to be timely discharged into the clarifying tank by a mud pump and a black skin hose.

8. And judging the cleaning end point according to the contents of the discharged naphthalene, the coal powder and the tar and the operation pressure. When the waste water discharged by cleaning does not contain naphthalene, coal powder, tar and other substances basically, the running resistance is reduced to a normal value, the high-pressure water cleaning operation is stopped, the high-pressure water cleaning spray head is slowly taken out from the pipeline, all valves are closed, the naphthalene, coal powder, tar and other substances precipitated in the collecting tank are cleaned to the mechanized clarifying tank, internal circulation is realized, and no pollutant is discharged.

9. The online cleaning method has the advantages of no influence on production, environmental protection, high efficiency, avoidance of large-scale maintenance and special operation, wide application range, suitability for cleaning of positive pressure pipelines and negative pressure pipelines. And different cleaning media can be selected according to different pipeline blockages, so that the cleaning agent is not only used by coking enterprises, but also suitable for other types of enterprises.

The working principle of the utility model is as follows:

1. the technology consists of three parts, namely a gas pipeline is flushed by high-pressure water on line, a melt is flushed by hot ammonia water, and the melt is discharged from a sewage discharge hole and pumped to a mechanical clarifying tank.

2. The high-pressure water on-line flushing uses a special flushing drill bit, a high-pressure cleaning machine is used for providing cleaning pressure of about 70Mpa, and a special high-pressure head continuously moves forwards according to the reaction force of outlet water to clean the gas pipeline.

3. The hot ammonia water is about 80 ℃, and can dissolve and wash sediments in the pipeline to a certain degree.

4. The drain can be discharged the melt that dissolves, washes to this reduces pipeline resistance, has connect the steam short circuit on the drain, can heat blowdown exit, in order to do benefit to the smooth discharge of melt.

5. The existing process of a chemical production workshop is fully utilized, hot ammonia water is only connected to the outlet of a circulating ammonia water pump and is washed by circulating ammonia water (80 ℃), sundries such as melt after washing are pumped to a mechanical clarifying tank by a slurry pump, tar can be further processed into tar products, residues enter tar residues for unified treatment, and no pollutants are discharged.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (7)

1. The utility model provides a multi-functional cleaning equipment of combination formula that is exclusively used in gas pipeline overhauls which characterized in that: the device comprises a fan rear gas pipeline and a waste liquid collecting box, wherein a blind end flange is arranged at one end of the fan rear gas pipeline, a high-pressure water spray pipe is connected and arranged on the blind end flange, the end part of the high-pressure water spray pipe, which is far away from the blind end flange, is connected and provided with a high-pressure cleaning machine, a hot ammonia water spray pipe is connected and arranged at the top of the fan rear gas pipeline, a drain pipe is connected and arranged at the bottom of the fan rear gas pipeline, a fusant drain outlet of DN250 is formed in the drain pipe, the waste liquid collecting box is arranged under the fusant drain outlet, and a steam pipe is connected and arranged on the drain pipe.

2. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: and the bottom of the waste liquid collecting box is connected with a slurry pump.

3. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: and the high-pressure water spraying pipe is provided with a high-pressure water cleaning hole DN 150.

4. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: the hot ammonia water spray pipe is provided with a hot ammonia water washing hole DN 50.

5. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: the end part of the hot ammonia spray pipe, which is far away from the gas pipeline behind the fan, is connected with a self-circulation ammonia water tank.

6. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: and a gas discharge pipe is connected and arranged above the gas pipeline behind the fan.

7. The combined multifunctional cleaning equipment special for gas pipeline maintenance of claim 1, wherein the combined multifunctional cleaning equipment comprises: the steam pipe is provided with a steam port.

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