Portable pipeline purging device
By designing a portable pipeline purge device and using multi-nozzle gas source annular pipe and Venn pipe systems, the problem of metallurgical enterprises being difficult to efficiently remove impurities during pipeline replacement and maintenance is solved, and efficient purge of local pipeline networks and chemical cleaning of oxygen pipelines is achieved, reducing construction costs and improving safety.
Patent Information
- Application Number
- CN202421199987.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the pipeline replacement and maintenance process, it is difficult for metallurgical enterprises to efficiently remove iron filings, welding slag and impurities in the pipeline, especially mediums that require high cleanliness such as oxygen. The existing methods are time-consuming and labor-intensive and increase construction costs.
A portable pipe purging device is designed, including a purge head, a connecting pipe, a gas source main pipe and a joint. The purge head is composed of a nozzle, a gas source branch pipe and a gas source ring pipe. There are multiple flat nozzles on the gas source ring pipe, and the air flow is fan-shaped, suitable for local pipe network purge, and can be connected to the Vennian pipe and the medicine storage box for chemical cleaning of oxygen pipes.
This device can efficiently purge the local pipeline network, reduce the impact on the in-use pipeline network, reduce construction costs, and effectively degreasing the oxygen pipeline, improving the safety of pipeline operation.
Smart Images
Figure CN222642741U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a portable pipeline blowing device, belonging to the technical field of industrial pipelines in the metallurgical industry. Background Art
[0002] The industrial pipelines of metallurgical enterprises are mainly used to transport various media, including oxygen, nitrogen, steam, compressed air, cooling water, etc. After the equipment and pipelines are installed, the pipelines should be purged to remove iron filings, welding slag and other impurities left in the equipment and pipelines. Especially for media such as oxygen that require high pipeline cleanliness, the pipelines should be fully purged and chemically cleaned when necessary.
[0003] During the construction phase, when the pipeline network is put into use for the first time, an external gas source can be introduced to centrally purge the entire pipeline network. However, after the pipeline network is put into use, if valves, flow meters and other accessories are damaged and need to be replaced, a large amount of iron filings, weld nodules, dust and other debris will remain in the pipeline when the pipeline is cut. The valve needs to be cleaned before it can be reinstalled. The general method is to wipe it with cotton thread, but the effect is poor. At this time, it is necessary to purge this section of the pipeline. However, since there is no purge point in the pipeline network where the valve and flow meter are replaced, the entire pipeline network can only be purged, or a temporary purge gas source pipeline can be installed, and then removed after the purge is completed. Either solution is time-consuming and labor-intensive, which greatly increases the construction cost. In addition, chemical cleaning of oxygen-transporting pipelines is even more time-consuming and labor-intensive. Therefore, a portable pipeline purge device is needed to purge any part of the pipeline network, and effective chemical cleaning can also be performed on pipelines that need degreasing treatment such as oxygen transport. Utility Model Content
[0004] The purpose of the utility model is to provide a portable pipeline blowing device, which can effectively blow the local pipeline network and can also chemically clean the pipelines that need degreasing treatment, so as to solve the problems existing in the background technology.
[0005] The technical solution of the utility model is:
[0006] A portable pipeline purge device comprises a purge head, a connecting pipe, an air source main pipe and a joint I. The purge head comprises a nozzle, an air source branch pipe and an air source ring pipe. The air source branch pipe is three stainless steel pipes. The length of the stainless steel pipe is the same as the radius of the air source ring pipe. One end of the three stainless steel pipes is connected to one end of the air source main pipe, and the other ends of the three stainless steel pipes are respectively connected to the air source ring pipe. The angle between two adjacent stainless steel pipes is 120°. A plurality of nozzles are arranged in the circumferential direction of the air source ring pipe. The other end of the air source main pipe is connected to the connecting pipe. Joints I are arranged at both ends of the connecting pipe.
[0007] The nozzles on the circumferential direction of the air source ring pipe are flat, and the ejected air flow is fan-shaped.
[0008] The radial angle between the nozzle in the circumferential direction of the air source ring pipe and the air source ring pipe is 30°.
[0009] The diameter of the gas source ring pipe matches the inner diameter of the pipeline that needs to be purged.
[0010] The above-mentioned portable pipeline purging device also comprises a venturi tube, a connector II, a drainage tube, a needle valve and a medicine storage box. One end of the venturi tube is connected to the connecting tube through the connector I, and the other end of the venturi tube is connected to the connector II. The venturi tube is connected to the medicine storage box through the drainage tube and the needle valve.
[0011] The beneficial effects of the utility model are: it can effectively purge any pipe section of the pipeline network, avoid the gas source cost consumption caused by purging the entire pipeline network, reduce the impact on the pipeline network in use, reduce the construction cost, and at the same time can effectively degrease the oxygen pipeline, thereby increasing the safety of oxygen pipeline operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 It is a partial view of the utility model;
[0014] In the figure: purge head 1, connecting pipe 2, venturi tube 3, gas source main pipe 4, connector I 5, connector II 6, drainage tube 7, needle valve 8, medicine storage box 9, nozzle 10, gas source branch pipe 11, gas source ring pipe 12. DETAILED DESCRIPTION
[0015] The present invention will be further described below by way of examples with reference to the accompanying drawings.
[0016] See attached Figure 1-2 A portable pipeline purge device comprises a purge head 1, a connecting pipe 2, an air source main pipe 4 and a joint Ⅰ5. The purge head 1 comprises a nozzle 10, an air source branch pipe 11 and an air source ring pipe 12. The air source branch pipe 11 is three stainless steel pipes. The length of the stainless steel pipe is the same as the radius of the air source ring pipe 12. One end of the three stainless steel pipes is connected to one end of the air source main pipe 4, and the other ends of the three stainless steel pipes are respectively connected to the air source ring pipe 12. The angle between two adjacent stainless steel pipes is 120°. A plurality of nozzles 10 are arranged in the circumferential direction of the air source ring pipe 12. The other end of the air source main pipe 4 is connected to the connecting pipe 2, and joints Ⅰ5 are arranged at both ends of the connecting pipe 2.
[0017] In this embodiment, refer to the attached Figure 1-2The purge head 1 is composed of a nozzle 10, an air source branch pipe 11 and an air source ring pipe 12. There are 9 nozzles 10 in total, which are evenly distributed on the air source ring pipe 12 along the circumferential direction. There are 3 air source branch pipes 11 in total, which are evenly distributed along the circumferential direction and connected with the air source ring pipe 12. The air source branch pipe 11 is connected with the air source main pipe 4, and the air source main pipe 4 is connected with the connecting pipe 2 through the joint Ⅰ5.
[0018] See attached Figure 2 The front end of the nozzle 10 is flat, and the ejected airflow is fan-shaped, which increases the flow rate and coverage of the purge gas source; the radial angle between the nozzle 10 and the gas source ring tube 12 is 30°, which ensures the purge intensity and makes the gas source flow toward the pipe mouth to avoid contaminating the internal pipeline. The gas source branch pipe 11 is three stainless steel pipes of equal length, and the angle between two adjacent stainless steel pipes is 120°, which ensures that the purge intensity of each nozzle is consistent.
[0019] See attached Figure 1 The venturi tube 3 is a common fluid tube. The venturi tube 3 is connected to an external gas source through a connector II 6. The bottom is connected to a medicine storage box 9 through a drainage tube 7. A needle valve 8 is installed on the drainage tube 7 to adjust the amount of medicine.
[0020] The method of using the utility model is as follows:
[0021] During the construction of pipeline valve replacement, after the old valve is cut off, the weld is repaired and polished. After polishing, there will be iron filings, dust, welding slag, etc. in the pipeline within 2 meters of the weld. At this time, the contaminated pipeline needs to be purged. For common media such as nitrogen and compressed air, put the purge head 1 into the pipeline, connect the purge head 1 to the external air source through connector Ⅰ5, open the external air source valve, purge the pipeline several times, and reinstall the valve after purging.
[0022] For pipelines that require degreasing, such as oxygen, the purge head 1 is placed in the pipeline, connected to the venturi 3 through the connecting pipe 2, and a degreasing agent such as trichloroethylene is added to the medicine storage box 9. The connector II 6 is connected to the external air source, and the external air source valve is opened. The pipeline is purged several times. During this period, the amount of degreasing agent added is controlled by controlling the opening of the needle valve 8 to achieve the purpose of cleaning and degreasing the pipeline. After the purging is completed, the valve is reinstalled.
[0023] The advantages of the utility model are:
[0024] 1) The front end of the nozzle 10 is flat, and the purge air flow is distributed in a fan shape, which increases the flow rate and coverage of the purge air source;
[0025] 2) The radial angle between the nozzle 10 and the gas source ring pipe 12 is 30°, which ensures the purge intensity while also allowing the gas source to flow toward the pipe orifice to avoid contaminating the internal pipeline;
[0026] 3) The joints adopt quick joints, which are easy to disassemble and assemble, shortening the construction period;
[0027] 4) A needle valve 8 is installed on the drainage tube 7 to effectively control the amount of medicine added;
[0028] 5) When purging common media such as nitrogen and compressed air, there is no need to install the Venturi tube 3. When purging media that require degreasing such as oxygen, the Venturi tube 3 needs to be installed and a degreasing agent is added to the medicine storage box 9;
[0029] 6) The connecting pipe 2 adopts a Z-shaped design to prevent the purge head 1 from being unable to be delivered into the pipeline due to the narrow working space.
[0030] 7) All gas source pipes are made of stainless steel to avoid oxidation during placement and contamination of the pipes to be purged.
Claims
1. A portable pipeline purge device, characterized in that: The invention comprises a purge head (1), a connecting pipe (2), a gas source main pipe (4) and a joint I (5). The purge head (1) comprises a nozzle (10), a gas source branch pipe (11) and a gas source ring pipe (12). The gas source branch pipe (11) is three stainless steel pipes. The length of the stainless steel pipe is the same as the radius of the gas source ring pipe (12). One end of the three stainless steel pipes is connected to one end of the gas source main pipe (4). The other ends of the three stainless steel pipes are respectively connected to the gas source ring pipe (12). The angle between two adjacent stainless steel pipes is 120°. The gas source ring pipe (12) is provided with a plurality of nozzles (10) in the circumferential direction. The other end of the gas source main pipe (4) is connected to the connecting pipe (2). Joints I (5) are provided at both ends of the connecting pipe (2).
2. A portable pipeline blowing device according to claim 1, characterized in that: The nozzles (10) in the circumferential direction of the air source ring tube (12) are flat, and the ejected airflow is fan-shaped.
3. A portable pipeline blowing device according to claim 2, characterized in that: The radial angle between the nozzle (10) and the air source ring tube (12) in the circumferential direction of the air source ring tube (12) is 30°.
4. A portable pipeline blowing device according to claim 3, characterized in that: The diameter of the gas source ring pipe (12) matches the inner diameter of the pipeline that needs to be purged.
5. A portable pipeline blowing device according to claim 1, characterized in that: The composition further comprises a venturi tube (3), a connector II (6), a drainage tube (7), a needle valve (8) and a medicine storage box (9). One end of the venturi tube (3) is connected to the connecting tube (2) via a connector I (5), and the other end of the venturi tube (3) is connected to the connector II (6). The venturi tube (3) is connected to the medicine storage box (9) via the drainage tube (7) and the needle valve (8).