CN109513695B - Dissolving type chlorinated pipeline dredging device and dredging method - Google Patents
Dissolving type chlorinated pipeline dredging device and dredging method Download PDFInfo
- Publication number
- CN109513695B CN109513695B CN201811609157.9A CN201811609157A CN109513695B CN 109513695 B CN109513695 B CN 109513695B CN 201811609157 A CN201811609157 A CN 201811609157A CN 109513695 B CN109513695 B CN 109513695B
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- Prior art keywords
- pipeline
- isolation valve
- pump outlet
- dosing pump
- tank
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
Abstract
The invention belongs to the field of mechanical maintenance, and particularly relates to a dissolving type chlorinated pipeline dredging device and a dredging method; the technical problems to be solved by the invention are as follows: the inner wall of the chlorination pipeline is scaled, the flow area of the pipeline is reduced, the flow is reduced, the residual chlorine concentration of a dosing point is lower than a standard value, and downstream pipelines and equipment are attached to marine organisms, so that the safe operation of the system is affected; the invention provides a dissolving type chlorinated pipeline dredging device and a dredging method, which are mature in pipeline dredging process and obvious in dredging effect, and can quickly and effectively solve the problem of chlorinated pipeline blockage; the device comprises a dissolving agent diluting tank, a dosing pump, a flushing pump, a dosing pump outlet pressure gauge, a flushing pump outlet pressure gauge, a dosing pump outlet isolation valve, a flushing pump outlet isolation valve, a rotameter A, a rotameter B, a big and small head A, a big and small head B, a big and small head C, a fire water inlet valve, a tank car outlet isolation valve and a tank car.
Description
Technical Field
The invention belongs to the field of mechanical maintenance, and particularly relates to a dredging device and a dredging method for a dissolved chlorinated pipeline.
Background
In recent years, the chlorine adding pipeline of the nuclear power station discovers that the flow meter indication number of the dosing pump outlet is reduced, the number of the dosing pump outlet is reduced year by year from the initial value of 75%, the lowest indication number is 13%, and the number of the dosing pump outlet is far lower than the normal value of the system of 70% -80%; through field verification, the residual chlorine concentration in the sea water of the sea water intake head of the island is lower than a normal value (control standard: 1.0-5.0 mg/L), and the sea water intake head of the island is sampled 1054 times from 1 month of 2010 to 11 months of 2015 according to the residual chlorine concentration data analysis of a chlorine adding system of two units, wherein 424 residual chlorine concentrations are lower than the control standard. After the chlorine adding pipeline in the factory is dismantled, a large amount of light yellow sediment is adhered to the inner wall of the pipeline, the inner diameter of the pipeline is about DN150, the thickness of the sediment is about 25-30 mm, the flow area of the chlorine adding pipeline is reduced, the flow rate of the outlet of the pump is reduced, the residual chlorine concentration of a medicine adding point is reduced, and the field operation requirement cannot be met.
According to the special programming dissolution type chlorine adding pipeline dredging device and the special programming dissolution type chlorine adding pipeline dredging method, dissolution type dredging is carried out on the simulated chlorine adding pipeline and the externally added chlorine adding pipeline in sequence, the dredging effect is obvious, the dirt removal rate can reach 99%, the system operation requirement is completely met, the selected chemical reagent can not cause any damage to the pipeline, the product after the dirt dissolution reaction can not cause seawater pollution, the adverse effect on downstream equipment is avoided, and the problem that the chlorine adding pipeline cannot be dredged for a long time is fundamentally solved.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the inner wall of the chlorination pipeline is scaled, the flow area of the pipeline is reduced, the flow is reduced, the residual chlorine concentration of the dosing point is lower than a standard value, and downstream pipelines and equipment are attached to marine organisms, so that the safe operation of the system is affected. The invention provides a dissolving type chlorinated pipeline dredging device and a dredging method, which are mature in pipeline dredging process and obvious in dredging effect, and can quickly and effectively solve the problem of chlorinated pipeline blockage.
The technical scheme of the invention is as follows:
the dissolving type chlorine adding pipeline dredging device is externally connected to the outer sides of No. 1 and No. 2 units and comprises a dissolving agent diluting tank, a dosing pump, a flushing pump, a dosing pump outlet pressure gauge, a flushing pump outlet pressure gauge, a dosing pump outlet isolating valve, a flushing pump outlet isolating valve, a rotameter A, a rotameter B, a big head A, a small head B, a big head C, a fire water inlet valve, a tank car outlet isolating valve and a tank car; the fire water inlet valve is positioned on a pipeline between the fire water in the factory and the solvent diluting tank, and the isolation valve is positioned on a pipeline between the tank truck and the solvent diluting tank; two pipelines DN50 and DN100 extend out of the dissolving agent diluting tank, and a dosing pump, a dosing pump outlet pressure gauge, a dosing pump outlet isolating valve, a rotor flowmeter A and a big head A are arranged on the DN50 at one time; the DN100 is sequentially provided with a flushing pump, a flushing pump outlet pressure gauge, a flushing pump outlet isolating valve, a rotor flowmeter B, a big head B and a small head C; the DN50 finally enters DN100, and the entry point is positioned on DN100 management between the big head B and the big head C; and finally, DN100 is communicated with a No. 1 unit and a No. 2 unit.
The implementation of the dissolving type chlorinated pipeline dredging method is based on the dissolving type chlorinated pipeline dredging device, and the method comprises the following steps of:
step 1, connecting equipment and connecting pipelines of the equipment, and placing all valves in a closed state;
step 2, opening a water inlet valve, and filling tap water into the dissolving agent diluting tank;
step 3, opening an isolation valve, starting a flushing pump, and discharging residual medium in the chlorination pipeline;
step three, stopping the flushing pump, closing the isolating valve, opening the isolating valve, and starting the dosing pump;
step 5, maintaining the liquid level of the dissolving agent diluting tank at an intermediate liquid level by adjusting the opening degrees of the water inlet valve and the isolation valve;
step 6, opening an isolation valve, starting a dosing pump on the tank truck, and adding a dissolving agent into the diluting tank;
step 7, keeping the concentration of the dissolving agent in the diluting tank to be 2% by controlling the opening degree of the isolating valve;
step 8, observing the change of the pressure indication number of the dosing pump outlet in the cleaning process, and controlling the opening of the isolation valve to ensure that the pressure indication number is maintained within the range of 0.3-0.5 Mpa;
step 9, after the pressure representation number is stable and unchanged, primarily judging that dirt on the inner wall of the pipeline is basically dissolved;
step 10, stopping the drug adding pump, closing the isolation valve and the isolation valve, opening the valve, starting the flushing pump, and maintaining the liquid level of the dissolving agent diluting tank unchanged;
step 11, after the pump outlet flow reaches a required value, the pipeline dredging work is finished;
step 12, if the flow rate of the flushing pump outlet is lower than the required value, repeating the steps 4-10.
The beneficial effects of the invention are as follows:
the utility model provides a solution formula chlorination pipeline dredging device and dredging method, pipeline dredging technology is mature, and the mediation effect is obvious, can quick effectual solution chlorination pipeline jam problem.
Drawings
FIG. 1 is a schematic view of a dissolution type chlorinated pipeline dredging apparatus
Detailed Description
The invention is further described below with reference to examples:
the dissolving type chlorine adding pipeline dredging device is externally connected to the outer sides of a No. 1 and No. 2 unit and comprises a dissolving agent diluting tank 1, a dosing pump 2, a flushing pump 3, a dosing pump outlet pressure gauge 4-1, a flushing pump outlet pressure gauge 4-2, a dosing pump outlet isolation valve 5-1, a flushing pump outlet isolation valve 5-2, a rotor flow meter A6-1, a rotor flow meter B6-2, a big end and a small end A7, a big end and a small end B8, a big end and a small end C9, a fire water inlet valve 10, a tank car outlet isolation valve 11 and a tank car 12; wherein the fire water inlet valve 10 is positioned on a pipeline between fire water in the factory and the dissolving agent diluting tank 1, and the isolation valve 11 is positioned on a pipeline between the tank truck 12 and the dissolving agent diluting tank 1; two pipelines DN50 and DN100 are also extended from the dissolving agent diluting tank 1, and a dosing pump 2, a dosing pump outlet pressure gauge 4-1, a dosing pump outlet isolation valve 5-1, a rotor flowmeter A6-1 and a big head A7 are arranged on the DN50 at one time; the DN100 is sequentially provided with a flushing pump 3, a flushing pump outlet pressure gauge 4-2, a flushing pump outlet isolation valve 5-2, a rotor flowmeter B6-2, a big head B8 and a big head C9; the DN50 finally enters DN100, and the entry point is positioned on DN100 management between the big end B8 and the big end C9; and finally, DN100 is communicated with a No. 1 unit and a No. 2 unit.
The implementation of the dissolving type chlorinated pipeline dredging method is based on the dissolving type chlorinated pipeline dredging device, and the method comprises the following steps of:
step 1, connecting equipment and connecting pipelines of the equipment, and placing all valves in a closed state;
step 2, opening a water inlet valve 10, and filling tap water into a dissolving agent diluting tank;
step 3, opening an isolation valve 5-2, starting a flushing pump 3, and discharging residual medium in the chlorination pipeline;
step three, stopping the flushing pump 3, closing the isolation valve 5-2, opening the isolation valve 5-1, and starting the dosing pump 2;
step 5, maintaining the liquid level of the dissolving agent dilution tank at an intermediate liquid level by adjusting the opening degrees of the water inlet valve 10 and the isolation valve 5-1;
step 6, opening an isolation valve 11, starting a dosing pump on the tank truck, and adding a dissolving agent into the diluting tank;
step 7, keeping the concentration of the dissolving agent in the diluting tank to be 2% by controlling the opening of the isolation valve 11;
step 8, observing the indication change of the pressure gauge 4-1 of the dosing pump outlet in the cleaning process, and controlling the opening of the isolation valve 5-1 to ensure that the indication of the pressure gauge 4-1 is maintained within the range of 0.3-0.5 Mpa;
step 9, after the indication number of the pressure gauge 4-1 is stable and unchanged, primarily judging that dirt on the inner wall of the pipeline is basically dissolved;
step 10, stopping the dosing pump 2, closing the isolation valve 11 and the isolation valve 5-1, opening the valve 5-2, starting the flushing pump 3, and maintaining the liquid level of the dissolving agent dilution tank unchanged;
step 11, after the pump outlet flow reaches a required value, the pipeline dredging work is finished;
step 12, if the flow rate of the flushing pump outlet is lower than the required value, repeating the steps 4-10.
Claims (1)
1. The utility model provides a solution formula chlorine pipe pull throughs, external in No. 1 unit and No. 2 unit outsides, its characterized in that: the device comprises a dissolving agent diluting tank (1), a dosing pump (2), a flushing pump (3), a dosing pump outlet pressure gauge (4-1), a flushing pump outlet pressure gauge (4-2), a dosing pump outlet isolation valve (5-1), a flushing pump outlet isolation valve (5-2), a rotameter A (6-1), a rotameter B (6-2), a big and small head A (7), a big and small head B (8), a big and small head C (9), a fire water inlet valve (10), a tank car outlet isolation valve (11) and a tank car (12); the fire water inlet valve (10) is positioned on a pipeline between fire water in life of a factory and the dissolving agent diluting tank (1), and the tank truck outlet isolation valve (11) is positioned on a pipeline between the tank truck (12) and the dissolving agent diluting tank (1); two pipelines DN50 and DN100 are also extended from the dissolving agent diluting tank (1), and a dosing pump (2), a dosing pump outlet pressure gauge (4-1), a dosing pump outlet isolation valve (5-1), a rotameter A (6-1) and a big head A (7) are sequentially arranged on the DN 50; the DN100 is sequentially provided with a flushing pump (3), a flushing pump outlet pressure gauge (4-2), a flushing pump outlet isolation valve (5-2), a rotor flowmeter B (6-2), a big head B (8) and a big head C (9); the DN50 finally enters DN100, and the entry point is positioned on a DN100 pipeline between the big end B (8) and the big end C (9); finally, DN100 is communicated with a No. 1 unit and a No. 2 unit;
the method for dredging the chlorinated pipeline by using the dissolution type chlorinated pipeline dredging device comprises the following steps:
step 1, connecting equipment and connecting pipelines of the equipment, and placing all valves in a closed state;
step 2, opening a fire water inlet valve (10), and filling tap water into the dissolving agent diluting tank (1);
step 3, opening a flushing pump outlet isolation valve (5-2), starting the flushing pump (3), and discharging residual medium in the chlorinated pipeline;
step 4, stopping the flushing pump (3), closing a flushing pump outlet isolation valve (5-2), opening a dosing pump outlet isolation valve (5-1), and starting the dosing pump (2);
step 5, the liquid level of the dissolving agent diluting tank (1) is maintained at the middle liquid level by adjusting the opening degrees of the fire water inlet valve (10) and the dosing pump outlet isolating valve (5-1);
step 6, opening an outlet isolation valve (11) of the tank truck, starting a dosing device on the tank truck (12), and adding a dissolving agent into the dissolving agent diluting tank (1);
step 7, controlling the opening degree of an outlet isolation valve (11) of the tank truck to keep the concentration of the dissolving agent in the dissolving agent diluting tank (1) to be 2%;
step 8, observing the indication change of a dosing pump outlet pressure gauge (4-1) in the cleaning process, and controlling the opening of a dosing pump outlet isolation valve (5-1) to ensure that the indication of the dosing pump outlet pressure gauge (4-1) is maintained within the range of 0.3-0.5 Mpa;
step 9, after the indication of the pressure gauge (4-1) of the dosing pump is stable and unchanged, primarily judging that dirt on the inner wall of the chlorinated pipeline is basically dissolved;
step 10, stopping the dosing pump (2), closing the tank truck outlet isolation valve (11) and the dosing pump outlet isolation valve (5-1), opening the flushing pump outlet isolation valve (5-2), starting the flushing pump (3), and maintaining the liquid level of the dissolving agent dilution tank (1) unchanged;
step 11, after the outlet flow of the flushing pump (3) reaches a required value, the dredging work of the chlorinated pipeline is finished;
and step 12, if the outlet flow of the flushing pump (3) is lower than the required value, repeating the steps 4-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609157.9A CN109513695B (en) | 2018-12-27 | 2018-12-27 | Dissolving type chlorinated pipeline dredging device and dredging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609157.9A CN109513695B (en) | 2018-12-27 | 2018-12-27 | Dissolving type chlorinated pipeline dredging device and dredging method |
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| Publication Number | Publication Date |
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| CN109513695A CN109513695A (en) | 2019-03-26 |
| CN109513695B true CN109513695B (en) | 2023-10-20 |
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| CN201811609157.9A Active CN109513695B (en) | 2018-12-27 | 2018-12-27 | Dissolving type chlorinated pipeline dredging device and dredging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026393A (en) * | 2019-04-03 | 2019-07-19 | 山西太钢不锈钢股份有限公司 | A kind of cleaning method of water cooling system |
| CN117366474A (en) * | 2021-08-27 | 2024-01-09 | 中国人民解放军92228部队 | Fuelling vehicle with residual oil dilution system |
| CN115446044A (en) * | 2022-09-20 | 2022-12-09 | 扬州市景杨表面工程有限公司 | Anti-blocking cleaning method for electroplating pipeline |
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