CN117210818A - Pipeline on-line pickling method - Google Patents
Pipeline on-line pickling method Download PDFInfo
- Publication number
- CN117210818A CN117210818A CN202311343320.2A CN202311343320A CN117210818A CN 117210818 A CN117210818 A CN 117210818A CN 202311343320 A CN202311343320 A CN 202311343320A CN 117210818 A CN117210818 A CN 117210818A
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- CN
- China
- Prior art keywords
- pipeline
- sealing
- cleaning
- pickling
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005554 pickling Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 72
- 238000004140 cleaning Methods 0.000 claims abstract description 48
- 239000000243 solution Substances 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010926 purge Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 9
- 239000012535 impurity Substances 0.000 description 6
- 239000002023 wood Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Landscapes
- Cleaning In General (AREA)
Abstract
The invention provides a method for on-line pickling of a pipeline, which is characterized in that cleaning pipelines are arranged at two ends of the pipeline, two sealing balls are placed in the pipeline, pickling solution is injected between the two sealing balls, and the sealing balls and the pickling solution are pushed to move in the pipeline by injecting gas into the pipeline, so that the pickling solution is fully contacted with the inner wall of the pipeline, and the pipeline is cleaned. Compared with the prior art, the on-line pickling method has the advantages that the clean pipelines are arranged at the two ends of the pipeline, the pipelines are not required to be completely disassembled, the method is simple and easy to operate, convenient to operate and low in cost, the safety can be ensured to a great extent, the labor is saved, and the construction speed is increased.
Description
Technical Field
The invention relates to the technical field of pipeline cleaning, in particular to an online pipeline pickling method.
Background
With the development of the economy in China, the construction fields of industry, civil use, municipal administration and the like are vigorously developed, various pipelines are widely applied, and impurities such as rust and the like can be generated in the pipelines due to environmental reasons, so that the impurities in the pipelines need to be cleaned in order to ensure the normal use of the pipelines. The traditional method is that the pipeline is disassembled completely by manpower, then the pipeline is cleaned, and is installed after the cleaning, the cleaning time is long, the construction period is greatly influenced, and in addition, the pipeline is long, so that the operation is inconvenient. The general cleaning method is to purge the pipeline by introducing mediums such as oxygen, nitrogen, compressed air and the like, but the cleaning effect is not ideal for the pipeline with serious rust.
Disclosure of Invention
In order to solve the technical problems, the invention provides the method for on-line pickling of the pipeline, which is simple and feasible in operation, convenient in operation and low in cost, can ensure safety to a great extent, saves labor and quickens construction speed.
In order to achieve the technical purpose, the invention adopts the following scheme:
a method for on-line pickling of a pipeline, comprising the steps of:
s1, respectively installing cleaning pipelines at two ends of a pipeline, wherein sealing devices are detachably arranged at the ends of the cleaning pipelines;
s2, opening a sealing device of a cleaning pipeline at one end, putting sealing balls into the cleaning pipeline, and closing the sealing device, wherein the number of the sealing balls is two;
s3, injecting pickling solution between the two sealing balls through a liquid injection pipe arranged on the upper side of the cleaning pipe;
s4, injecting gas into the pipeline between the sealing ball and the sealing device through a gas adding pipe arranged on the upper side of the cleaning pipeline, and pushing the sealing ball and the pickling solution to the cleaning pipeline at the other end of the pipeline under the action of pressure;
s5, standing the sealing ball in a cleaning pipeline for 30-40 min, and then releasing gas in the pipeline; in the standing process, checking whether leakage points exist at a welded junction of the pipeline;
s6, repeating the steps S4-S5 for 5-6 times;
s7, after cleaning, discharging the pickling solution out of the pipeline through a liquid outlet arranged on the lower side of the cleaning pipeline, and conveying the pickling solution to a specified hazardous waste treatment mechanism after recycling;
s8, opening the sealing device, and taking out the sealing ball;
s9, purging the pipeline for 5-10 min by using gas, and arranging a white paint spraying wood target plate at a gas outlet, wherein no impurity on the wood target plate is qualified.
Compared with the prior art, the invention has the beneficial effects that:
the method for on-line pickling is characterized in that the clean pipelines are arranged at the two ends of the pipeline, and the pipelines are not required to be completely disassembled.
Further, the inner diameter of the cleaning pipeline is the same as that of the pipeline, and the sealing effect can be ensured when the sealing ball moves into the pipeline from the cleaning pipeline.
Further, the diameter of the sealing ball is equal to the inner diameter of the pipeline, the sealing effect of the sealing ball in the pipeline can be guaranteed, a steel wire rope is arranged between the two sealing balls, the distance between the two sealing balls can be maintained through the arrangement of the steel wire rope, and further the pickling solution between the sealing balls can be guaranteed to be filled in the pipeline, so that the cleaning effect is guaranteed.
Further, the acid-resistant positioning device is arranged in the sealing ball, so that the position and the moving speed of the sealing ball can be monitored in real time, and when the sealing ball is found to be blocked in the pipeline, the sealing ball can smoothly pass through in a hammering vibration mode and the like.
Further, the pickling solution is carbon tetrachloride pickling solution, and the consumption of the pickling solution is determined according to the specific condition of the pipeline.
Further, in the step S4, the injected gas is nitrogen or air, the pressure is 0.01-0.12 Mpa, the running speed of the sealing ball and the pickling solution is 0.5 m/S, the running speed of the sealing ball and the pickling solution is moderate, the carbon tetrachloride pickling solution can fully contact and react with impurities in a pipeline, and the cleaning effect of the pipeline is good.
Further, in step S9, the gas is nitrogen or air.
Further, the pressure gauge and the air release valve are arranged on the air adding pipe, so that the air inlet pressure can be conveniently observed, and the air in the pipeline can be released by opening the air release valve.
Drawings
FIG. 1 is a schematic diagram of an on-line pipeline pickling device in an embodiment of the invention;
in the figure: 1. a pipe; 2. cleaning a pipeline; 3. a sealing device; 4. a sealing ball; 5. a liquid injection pipe; 6. a gas adding pipe; 7. and a liquid outlet.
Detailed Description
The present invention will be described in detail with reference to the following embodiments for a full understanding of the objects, features and effects of the present invention, but the present invention is not limited thereto.
Referring to fig. 1, the pipeline on-line pickling device provided by the embodiment of the invention comprises a pipeline 1, wherein cleaning pipelines 2 with the same inner diameter as the pipeline 1 are arranged at two ends of the pipeline 1, a sealing device 3 is detachably arranged at the end part of the cleaning pipeline 2, a liquid injection pipe 5 and a gas adding pipe 6 are arranged at the upper end of the cleaning pipeline 2, a pressure gauge and a gas releasing valve are arranged on the gas adding pipe 6, the gas inlet pressure is convenient to observe, and the gas in the pipeline 1 can be released by opening the gas releasing valve. The lower end of the cleaning pipeline 2 is provided with a liquid outlet 7, and the cleaned pickling solution is discharged out of the pipeline 1 through the liquid outlet 7. The pipeline on-line pickling device further comprises two sealing balls 4, the diameter of each sealing ball 4 is equal to the inner diameter of the pipeline 1, the sealing effect of each sealing ball 4 in the pipeline 1 can be guaranteed, a steel wire rope is arranged between the two sealing balls 4, the distance between the two sealing balls 4 can be maintained by the arrangement of the steel wire rope, and further the pickling solution between the sealing balls 4 can be guaranteed to be filled in the pipeline 1, so that the cleaning effect is guaranteed; the acid-resistant positioning device is arranged in the sealing ball 4, so that the position and the moving speed of the sealing ball 4 can be monitored in real time, and when the sealing ball 4 is found to be blocked in the pipeline 1, the sealing ball 4 can smoothly pass through in a hammering vibration mode and the like.
The embodiment of the invention provides a method for on-line pickling of a pipeline, which comprises the following steps:
s1, respectively installing cleaning pipelines 2 with the same inner diameter as the pipeline 1 at two ends of the pipeline 1, wherein a sealing device 3 is detachably arranged at the end part of each cleaning pipeline 2;
s2, opening a sealing device 3 of a cleaning pipeline 2 at one end, putting two sealing balls 4 into the cleaning pipeline 2, and closing the sealing device 3;
s3, injecting pickling solution between the two sealing balls 4 through a liquid injection pipe 5 arranged on the upper side of the cleaning pipeline 2, wherein the pickling solution is carbon tetrachloride pickling solution, and the consumption of the pickling solution is determined according to the specific condition of the pipeline 1;
s4, injecting nitrogen or air into the pipeline 1 between the sealing ball 4 and the sealing device 3 through the air adding pipe 6 arranged on the upper side of the cleaning pipeline 2, wherein the pressure is 0.01-0.12 Mpa, pushing the sealing ball 4 and the pickling solution to the cleaning pipeline 2 at the other end of the pipeline 1 under the action of the pressure, the running speed of the sealing ball 4 and the pickling solution is 0.5 m/S, the running speeds of the sealing ball 4 and the pickling solution are moderate, and the carbon tetrachloride pickling solution can fully contact and react with impurities in the pipeline 1, so that the cleaning effect is good;
s5, after the sealing ball 4 stands for 30-40 min in the cleaning pipeline 2, opening a discard valve on the gas adding pipe 6 to release gas in the pipeline 1; in the standing process, checking whether leakage points exist at a welded junction of the pipeline;
s6, repeating the steps S4-S5 for 5-6 times;
s7, after cleaning, discharging the pickling solution out of the pipeline 1 through a liquid outlet 7 arranged on the lower side of the cleaning pipeline 2, and conveying the pickling solution to a specified hazardous waste treatment mechanism after recycling;
s8, opening the sealing device 3, and taking out the sealing ball 4;
s9, purging the pipeline 1 for 5-10 min by using nitrogen or air, and arranging a white paint spraying wood target plate at a gas outlet, wherein no impurities on the wood target plate are qualified.
Finally, it should be noted that: the above list is only a preferred embodiment of the present invention, and it is understood that those skilled in the art can make modifications and variations thereto, and it is intended that the present invention be construed as the scope of the appended claims and their equivalents.
Claims (8)
1. An on-line pickling method for a pipeline is characterized by comprising the following steps of:
s1, respectively installing cleaning pipelines (2) at two ends of a pipeline (1), wherein a sealing device (3) is detachably arranged at the end part of each cleaning pipeline (2);
s2, opening a sealing device (3) of a cleaning pipeline (2) at one end, putting sealing balls (4) into the cleaning pipeline (2), and closing the sealing device (3), wherein the number of the sealing balls (4) is two;
s3, injecting pickling solution between the two sealing balls (4) through a liquid injection pipe (5) arranged on the upper side of the cleaning pipeline (2);
s4, injecting gas into the pipeline (1) between the sealing ball (4) and the sealing device (3) through a gas adding pipe (6) arranged on the upper side of the cleaning pipeline (2), and pushing the sealing ball (4) and pickling solution to the cleaning pipeline (2) at the other end of the pipeline (1) under the action of pressure;
s5, standing the sealing ball (4) in the cleaning pipeline (2) for 30-40 min, and then releasing the gas in the pipeline (1);
s6, repeating the steps S4-S5 for 5-6 times;
s7, after the cleaning is finished, the pickling solution is discharged out of the pipeline (1) through a liquid outlet (7) arranged at the lower side of the cleaning pipeline (2);
s8, opening the sealing device (3), and taking out the sealing ball (4);
s9, purging the pipeline (1) for 5-10 min by using gas.
2. The method for on-line pickling of pipes according to claim 1, characterised in that the inner diameter of the cleaning pipe (2) is the same as the inner diameter of the pipe (1).
3. The method for on-line pickling of a pipeline according to claim 1, characterized in that the diameter of the sealing balls (4) is equal to the inner diameter of the pipeline (1), and that a steel wire rope is arranged between the two sealing balls (4).
4. The method for on-line pickling of pipelines according to claim 1, characterized in that an acid-resistant positioning device is arranged in the sealing ball (4).
5. The method for on-line pickling a pipeline according to claim 1, wherein the pickling solution is a carbon tetrachloride pickling solution.
6. The method for on-line pickling of pipelines according to claim 1, wherein the gas injected in the step S4 is nitrogen or air, the pressure is 0.01-0.12 Mpa, and the running speed of the sealing ball (4) and the pickling solution is 0.5 m/S.
7. The method for on-line pickling of pipes according to claim 1, wherein the gas in step S9 is nitrogen or air.
8. The method for on-line pickling of pipelines according to claim 1, characterized in that the gas adding pipe (6) is provided with a pressure gauge and a gas releasing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311343320.2A CN117210818A (en) | 2023-10-17 | 2023-10-17 | Pipeline on-line pickling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311343320.2A CN117210818A (en) | 2023-10-17 | 2023-10-17 | Pipeline on-line pickling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117210818A true CN117210818A (en) | 2023-12-12 |
Family
ID=89046299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311343320.2A Pending CN117210818A (en) | 2023-10-17 | 2023-10-17 | Pipeline on-line pickling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117210818A (en) |
-
2023
- 2023-10-17 CN CN202311343320.2A patent/CN117210818A/en active Pending
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