An on-line cleaning and descaling device for gas pipeline valves

Abstract

The utility model discloses a kind of coal gas pipeline valve online cleaning and scale removal device, including liquid spray pipe, vertical sleeve, cleaning valve, isolating valve and pipeline short section, the lower end of the pipeline short section is connected with the cleaning port opened in the top of coal gas pipeline, the upper end of the vertical sleeve is sealed by cover, and the lower end is connected with the upper end of pipeline short section by isolating valve;The upper end of the liquid spray pipe is connected with cleaning liquid pipeline by cleaning valve, after sliding through the central hole of vertical sleeve upper end cover, it enters coal gas pipeline through the inner hole of isolating valve and pipeline short section, and drain valve is installed in the bottom of coal gas pipeline and the bottom of gas gate valve installed on coal gas pipeline.This utility model's liquid spray pipe can enter coal gas pipeline through isolating valve without affecting coal gas delivery, clean dirt in coal gas pipeline and gas gate valve by spraying cleaning liquid, restore the function of gas gate, and the device can reduce the maintenance cost of equipment, prolong the service life of gas gate valve.

Description

Technical Field

[0001] This utility model relates to an online cleaning and descaling device for gas pipeline valves, which can effectively remove stubborn deposits on the sealing surface of gas gate valves, belonging to the technical field of coking equipment. Background Technology

[0002] During the coke oven gas purification and transportation process in the coking plant's gas refining workshop, a small amount of coal dust, coke dust, and heavy tar accumulates in the pipelines and at the bottom of the gas gate valves. Over the years, a large amount of stubborn deposits accumulate on the sealing surface of the gas gate valve body. Due to the poor flowability of coke dust, it can become stuck between the gate and the valve body sealing surface when the gas gate valve is closed, causing the gas gate valve to fail to close effectively and thus failing to cut off the gas flow in the pipeline. This affects process production or equipment maintenance of branch pipelines. In emergencies, pressurized gas pipeline sealing measures are required to temporarily seal the pipeline instead of using the gas gate valve, thereby increasing equipment maintenance costs.

[0003] In order to reduce the maintenance cost of gas equipment in the coking plant's gas refining workshop, extend the service life of gas gate valves, and improve equipment maintenance efficiency, it is necessary to design an online cleaning and descaling device for coke oven gas pipelines and gas gate valves. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an online cleaning and descaling device for gas pipeline valves, which can quickly and effectively remove stubborn deposits on the sealing surface of gas gate valves, ensuring the normal operation of coke oven gas pipelines and gas gate valves.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An online cleaning and descaling device for gas pipeline valves includes a spray pipe, a vertical sleeve, a cleaning valve, an isolation valve, and a pipeline short section. The lower end of the pipeline short section is connected to a cleaning port opened at the top of the gas pipeline. The upper end of the vertical sleeve is sealed by a cover plate, and the lower end is connected to the upper end of the pipeline short section through the isolation valve. The upper end of the spray pipe is connected to a cleaning fluid pipeline through the cleaning valve, and the lower end slides through the center hole of the cover plate at the upper end of the vertical sleeve, and then enters the gas pipeline through the inner hole of the isolation valve and the pipeline short section. Drain valves are installed at the bottom of the gas pipeline and at the bottom of the gas gate valve installed on the gas pipeline.

[0006] In the aforementioned online cleaning and descaling device for gas pipeline valves, the lower end of the spray pipe is bent to form a downward spray nozzle or an upward spray nozzle that sprays liquid at an angle.

[0007] The above-mentioned online cleaning and descaling device for gas pipeline valves has multiple spray nozzles at the lower end of the spray pipe.

[0008] The above-mentioned online cleaning and descaling device for gas pipeline valves has a sealing element between the inner wall of the vertical sleeve and the spray pipe.

[0009] In the above-mentioned online cleaning and descaling device for gas pipeline valves, two sealing elements are provided, which are respectively installed at both ends of the vertical sleeve. A gap is left between the sealing element located at the lower end of the vertical sleeve and the isolation valve.

[0010] In the above-mentioned online cleaning and descaling device for gas pipeline valves, the isolation valve and the pipeline short section are connected by flanges, and the isolation valve and the vertical sleeve are connected by flanges. The pipeline short section is welded to the top of the gas pipeline.

[0011] The spray pipe of this invention can enter the gas pipeline through the isolation valve without affecting the gas transmission. It sprays cleaning liquid to quickly and effectively clean the dirt in the gas pipeline and gas gate valve, restore the normal function of the gas gate valve, and ensure the normal operation of the coke oven gas pipeline and gas gate valve. This device can reduce the maintenance cost of gas equipment and extend the service life of the gas gate valve. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of different spray nozzles on the spray pipe, where... Figure 2 (a) is a downward-sloping spray nozzle; Figure 2 (b) is an upward-sloping spray nozzle; Figure 2 (c) consists of multiple downward-sloping liquid spray nozzles; Figure 3 This is a schematic diagram illustrating the use of this utility model.

[0014] The following are the labels in the diagram: 1. Spray pipe, 2. Vertical sleeve, 3. Cleaning valve, 4. Cleaning fluid interface, 5. Seal, 6. Isolation valve, 7. Pipeline section, 8. Gas pipeline, 9. Gas gate valve, 10. Drain valve, 11. Online cleaning and descaling device for gas pipeline valves. Detailed Implementation

[0015] This invention addresses the shortcomings of existing technologies by providing an online cleaning and descaling device for gas pipeline valves that is easy to operate, safe, and reliable.

[0016] See Figure 1This utility model mainly includes a spray pipe 1, a vertical sleeve 2, a cleaning valve 3, a cleaning fluid interface 4, a sealing element 5, an isolation valve 6, a pipe section 7, and a drain valve 10. The upper end of the vertical sleeve 2 is sealed by a cover plate, and the lower end is connected to the upper end of the pipe section 7 through the isolation valve 6. The lower end of the pipe section 7 is connected to the top of the gas pipeline 8. The upper end of the spray pipe 1 is connected to the cleaning fluid pipeline through the cleaning valve 3, and the lower end slides through the center hole of the cover plate at the upper end of the vertical sleeve 2, and then enters the gas pipeline 8 through the inner hole of the isolation valve 6 and the pipe section 7, spraying the cleaning fluid at fixed points and in a directional manner inside the gas pipeline 8 to clean the deposited and attached dirt. A drain valve 10 is installed at the bottom of the gas gate valve 9 and the bottom of the gas pipeline 8 to discharge the mixture of cleaning fluid and sediment.

[0017] See Figure 2 To facilitate cleaning dirt in different locations, the lower end of the spray pipe 1 is bent to form spray nozzles with different spray directions. For example, a downward spray nozzle sprays liquid at an angle downwards, mainly used for cleaning dirt at the bottom, and an upward spray nozzle sprays liquid at an angle upwards, mainly used for cleaning dirt at higher levels. To increase the spray volume, multiple spray nozzles can be set at the lower end of the spray pipe 1.

[0018] To prevent leakage at the upper end cover of the vertical sleeve 2, a sealing element 5 is provided between the inner wall of the vertical sleeve 2 and the spray pipe 1. The sealing element 5 can be an O-ring or packing.

[0019] As shown in the diagram, two seals 5 are installed at the two ends of the vertical sleeve 2, respectively. These seals seal the outer periphery of the spray pipe 1 and guide its vertical movement, enabling multi-degree-of-freedom motion of the spray pipe 1. This allows the spray pipe 1 to spray cleaning fluid at specific points within the gas pipeline 8, cleaning the deposits and deposits on the gas gate valve 9. A gap must be left between the seal 5 at the lower end of the vertical sleeve 2 and the isolation valve 6 to accommodate the bent portion at the lower end of the spray pipe 1.

[0020] The isolation valve 6 is connected to the pipe section 7 and the vertical sleeve 2 via flanges, facilitating the disassembly and replacement of components. The pipe section 7 is welded to the top of the gas pipeline 8.

[0021] Isolation valve 6 and pipe section 7 are used to install vertical sleeve 2 on the outer wall of gas pipeline 8; spray pipe 1 is used to spray cleaning fluid, and spray pipe 1 can move up and down and rotate in vertical sleeve 2; cleaning valve 4 is used to control the flow rate and opening and closing of cleaning fluid; isolation valve 6 is used to realize the connection or disconnection between vertical sleeve 2 and pipe section 7.

[0022] The method of using this utility model is as follows: Under normal conditions, only the pipe section 7 and the isolation valve 6 are installed on the gas pipeline 8. The isolation valve 6 is in the closed state and does not affect the normal gas transmission of the gas pipeline 8. When the gas gate valve 9 is blocked, move the lower end of the spray pipe 1 into the vertical sleeve 2, and connect the vertical sleeve 2 to the isolation valve 6 with bolts (with a sealing gasket between them). Then open the isolation valve 6 and insert the spray pipe 1 into the gas pipeline 8 through the isolation valve 6 and the pipe section 7. Then open the cleaning valve 3 to clean the bottom of the gas pipeline 8 and the sealing surface of the gas gate valve 9. During the cleaning process, the spray pipe 1 can be moved up and down and rotated to clean the dirt in different parts. The waste liquid generated during cleaning is discharged through the drain valve 10 at the bottom of the gas pipeline 8. When the cleaning effect meets the requirements, lift the spray pipe 1 by hand so that its lower end is higher than the isolation valve 6, then close the isolation valve 6, and finally remove and remove the vertical sleeve 2 to complete the cleaning of the gas pipeline and the gas gate valve. This invention allows for the cleaning of gas pipelines and gas gate valves without stopping gas delivery, and the operation is very convenient.

[0023] The beneficial effects of this utility model are: This utility model employs a pressurized opening method for installation on gas pipelines, utilizing a liftable and rotatable spray pipe for cleaning and descaling. A drain valve removes the cleaning fluid and liquid containing sediment and dirt injected into the pipeline. This allows for online cleaning and descaling without affecting gas transmission, restoring the normal function of the gas gate valve. This device provides a novel online cleaning and descaling solution for gas gate valves, significantly improving the efficiency of maintenance work on gas pipelines and auxiliary equipment.

Claims

1. An online cleaning and descaling device for gas pipeline valves, characterized in that, The system includes a spray pipe (1), a vertical sleeve (2), a cleaning valve (3), an isolation valve (6), and a pipe section (7). The lower end of the pipe section (7) is connected to the cleaning port opened at the top of the gas pipeline (8). The upper end of the vertical sleeve (2) is sealed by a cover plate, and the lower end is connected to the upper end of the pipe section (7) through the isolation valve (6). The upper end of the spray pipe (1) is connected to the cleaning fluid pipeline through the cleaning valve (3), and the lower end slides through the center hole of the cover plate at the upper end of the vertical sleeve (2) and enters the gas pipeline (8) through the inner hole of the isolation valve (6) and the pipe section (7). Drain valves (10) are installed at the bottom of the gas pipeline (8) and at the bottom of the gas gate valve (9) installed on the gas pipeline (8).

2. The online cleaning and descaling device for gas pipeline valves according to claim 1, characterized in that, The lower end of the spray pipe (1) is bent to form a downward spray nozzle that sprays liquid downwards or an upward spray nozzle that sprays liquid upwards.

3. The online cleaning and descaling device for gas pipeline valves according to claim 2, characterized in that, The lower end of the spray pipe (1) has multiple spray nozzles.

4. An online cleaning and descaling device for gas pipeline valves according to any one of claims 1-3, characterized in that, A sealing element (5) is provided between the inner wall of the vertical sleeve (2) and the spray pipe (1).

5. The online cleaning and descaling device for gas pipeline valves according to claim 4, characterized in that, Two seals (5) are provided and installed at both ends of the vertical sleeve (2). A gap is left between the seal (5) at the lower end of the vertical sleeve (2) and the isolation valve (6).

6. The online cleaning and descaling device for gas pipeline valves according to claim 5, characterized in that, The isolation valve (6) and the pipe section (7) are connected by flanges, and the isolation valve (6) and the vertical sleeve (2) are connected by flanges. The pipe section (7) is welded to the top of the gas pipeline (8).

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