CN213803227U - SCAL type indirect air cooling circulating water treatment system - Google Patents
SCAL type indirect air cooling circulating water treatment system Download PDFInfo
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- CN213803227U CN213803227U CN202022069862.3U CN202022069862U CN213803227U CN 213803227 U CN213803227 U CN 213803227U CN 202022069862 U CN202022069862 U CN 202022069862U CN 213803227 U CN213803227 U CN 213803227U
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Abstract
The utility model provides a SCAL type indirect air cooling circulating water processing system, including cold circulating water pipeline, cold circulating water pipeline passes through interface N1 and is connected with isolating valve V1, isolating valve V1 is connected with the booster pump import, the booster pump export is connected with isolating valve V2, isolating valve V2 mixes a bed inlet connection through interface N2 and high speed, the 3 exports of high speed bed that mix are connected with resin trapper inlet, resin trapper export is connected with isolating valve V3 through interface N3, isolating valve V3 is connected with isolating valve V4, isolating valve V4 is connected with hot circulating water pipeline through interface N4. The utility model has the characteristics of simple structure, convenient operation, low price, high efficiency, high quality, water conservation and environmental protection.
Description
Technical Field
The utility model relates to a circulating water treatment technical field, in particular to indirect air cooling circulating water processing system of SCAL type.
Background
In a thermal power generating set, there is an indirect air cooling system combining a surface condenser with a vertically arranged aluminum radiator, which is called as an SCAL type indirect air cooling system for short. The system mainly comprises a surface type condenser, a circulating water system, an aluminum pipe aluminum fin radiator and an air cooling tower, wherein desalted water is used as a cooling intermediate medium, surface heat exchange is carried out on the condenser and the air cooling tower respectively, and final cooling of the exhaust steam of the steam turbine is realized.
The circulating water is used as an intermediate cooling medium, the quality of the water quality of the circulating water not only affects the heat exchange effect, but also causes the problems of equipment corrosion and the like. The accident of corrosion and perforation of the pure aluminum heat exchange tube caused by unqualified circulating water quality frequently occurs, the loaded capacity of a unit is seriously influenced, even the unit is not stopped, and the safety and economic operation of a power plant are seriously influenced.
According to the requirement of equipment manufacturers, the indirect air cooling system is preferably flushed by water in an integral discharge mode for more than 3 times before operation so as to remove solid particles and inorganic salts remained in the manufacturing, transporting and installing processes, the water quality standard of operation is achieved, and approximately 2.4 ten thousand m of desalted water is consumed31.8 ten thousand meters of wastewater is discharged3. The huge demineralized water consumption and waste discharge directly increase the production cost, and generate serious environmental protection problems, and also restrict the construction progress on site.
In order to solve the problem, a small cation bed bypass flow treatment method is proposed, wherein a small cation bed is arranged in an air cooling tower for closed circulation so as to remove residual solid particles and inorganic salts and ensure that the circulating water quality reaches the standard. However, the method needs to increase small cation bed equipment, is provided with an acid storage system, an acid regeneration system, a wastewater discharge system and the like, has large investment, and is low in equipment utilization rate because the cation bed is idle for a long time after normal operation; in addition, the small cation bed can only remove cations but not anions, so that the qualified conductivity cannot be ensured, and the continuous operation of the small cation bed can cause the problem of too low pH value of circulating water.
Hydrazine treatment methods have also been proposed, in which hydrazine and other series of corrosion inhibitors or reducing agents are added to the circulating water to reduce the corrosion rate of pure aluminum-carbon steel systems. However, this method cannot remove solid particles and adjust the pH value, and is not suitable for the initial working conditions of operation.
Disclosure of Invention
In order to solve the technical problem, an object of the utility model is to provide an indirect air cooling circulating water processing system of SCAL type has simple structure, convenient operation, low price, high efficiency, matter is excellent, characteristics of water conservation, environmental protection.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model provides a SCAL type indirect air cooling circulating water processing system, including cold circulating water pipeline 1, cold circulating water pipeline 1 passes through interface N1 and is connected with isolating valve V1, isolating valve V1 and 2 access connections of booster pump, the export of booster pump 2 is connected with isolating valve V2, isolating valve V2 passes through interface N2 and mixes 3 access connections with high speed, 3 exports of high speed mixing bed and resin trapper 4 access connection, the resin trapper 4 export is connected with isolating valve V3 through interface N3, isolating valve V3 is connected with isolating valve V4, isolating valve V4 passes through interface N4 and is connected with hot circulating water pipeline 5, condenser 6 is connected to cold circulating water pipeline 1 output, and hot circulating water pipeline 5 is connected to the output of condenser hydroecium 6.
The booster pump 2 has specification of H0.3 MPa and Q200 m3/h。
The inlet of the booster pump 2 is provided with a manual isolation valve V13, and the outlet is sequentially provided with a check valve V14 and a manual isolation valve V15.
A safety valve V10 is arranged in a pipeline close to V2 between the isolation valve V15 and the isolation valve V2, and the setting pressure is 0.6 MPa.
And an outlet of the booster pump 2 is provided with a local pressure gauge and a remote flowmeter.
The pipeline between the isolation valve V3 and the isolation valve V4 is provided with a safety valve V11 and a check valve V12, the safety valve V11 is arranged near the isolation valve V3, the operating pressure is 0.6MPa, and the safety valve V12 is arranged near the isolation valve V4.
The specification of the pipeline and valve system is DN150, PN1.0 MPa.
The interface N1 is positioned on the outer side of the cold circulating water pipeline 1 close to the water chamber 6 of the condenser.
The interface N2 is positioned at the inner side of an inlet pneumatic valve V8 of the high-speed mixing bed 3.
The interface N3 is positioned inside an outlet pneumatic valve V9 of the high-speed mixing bed 3.
The interface N4 is positioned on the outside of the hot circulating water pipeline 5 close to the water chamber 6 of the condenser.
The utility model has the advantages that:
the utility model discloses with the cold circulating water from indirect air cooling system pass through the booster pump back that steps up, get into the high-speed bed that mixes of condensate fine treatment system, through the ion exchange and the depth filter effect of resin, can detach the inorganic salt and the solid particle in the circulating water, the circulating water after the processing returns indirect air cooling system hot circulating water pipeline. The circulating water after the mixed bed treatment can reach the standard of desalted water, and the circulating water of the indirect air cooling system can reach the standard after continuously running for about one week. And regenerating resin through an in-vitro regeneration system after the mixed bed fails, and returning the regenerated resin to the mixed bed for continuous use. And after the circulating water reaches the standard, closing an isolation valve connected with the mixed bed and the indirect air cooling system, wherein the mixed bed can be used for treating a condensed water system, and when the quality of the circulating water is abnormal, the system is switched to be used for treating the circulating water.
The system has the characteristics of simple structure, convenient operation, investment saving, high efficiency, good effect, water saving and environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, an SCAL type indirect air-cooling circulating water treatment system comprises a cold circulating water pipeline 1, wherein the cold circulating water pipeline 1 is connected with an isolation valve V1 through a connector N1, an isolation valve V1 is connected with an inlet of a booster pump 2, an outlet of the booster pump 2 is connected with an isolation valve V2, the isolation valve V2 is connected with an inlet of a high-speed mixing bed 3 through a connector N2, an outlet of the high-speed mixing bed 3 is connected with an inlet of a resin catcher 4, an outlet of the resin catcher 4 is connected with an isolation valve V3 through a connector N3, the isolation valve V3 is connected with an isolation valve V4, and the isolation valve V4 is connected with a hot circulating water pipeline 5 through a connector N4. The condenser water chamber 6 and the high-speed mixing bed 3 are positioned in the same layer of a steam turbine plant.
The cold circulating water output by the cold circulating water pipeline 1 enters the condenser water chamber 6, and exchanges heat with the exhaust steam of the steam turbine through the surface condenser, and the hot circulating water output by the condenser water chamber 6 returns to the circulating system.
The high-speed mixing bed 3 and the resin catcher 4 are original complete equipment of a condensate fine treatment system of a thermal generator set, and are provided with cation and anion exchange resins and an in-vitro regeneration system.
The booster pump 2 has specification of H0.3 MPa and Q200 m3/h。
The inlet of the booster pump 2 is provided with a manual isolation valve V13, and the outlet of the booster pump is provided with a check valve V14 and a manual isolation valve V15.
A safety valve V10 is arranged between the outlet isolation valve V15 of the booster pump 2 and the isolation valve V2 and close to V2 in a pipeline, and the setting pressure is 0.6 MPa.
And an outlet of the booster pump 2 is provided with an on-site pressure gauge and a remote flowmeter.
The pipeline between the isolation valve V3 and the isolation valve V4 is provided with a safety valve V11 and a check valve V12, the position close to the isolation valve V3 is provided with a safety valve V11, the operating pressure is 0.6MPa, and the position close to the isolation valve V4 is provided with a check valve V12.
The specification of the pipeline and valve system is DN150, PN1.0 MPa.
The interface N1 is positioned on the outside of the cold circulating water pipeline 1 close to the water chamber 6 of the condenser.
The interface N2 is positioned at the inner side of an inlet pneumatic valve V8 of the high-speed mixing bed 3.
The interface N3 is positioned inside an outlet pneumatic valve V9 of the high-speed mixing bed 3.
The interface N4 is positioned on the outside of the hot circulating water pipeline 5 close to the water chamber 6 of the condenser.
The utility model discloses the theory of operation is:
the condensate fine treatment system of the thermal generator set generally comprises three high-speed mixing beds, one high-speed mixing bed is used for two purposes, and the other high-speed mixing bed can treat circulating water without influencing the normal operation of the condensate fine treatment system. Assuming that the #1 mixed bed is used for treating circulating water, before the #1 mixed bed is put into operation, at least one circulating water pump is confirmed to operate, the mixed bed is confirmed to be in an off-state, program control is switched to manual operation, then a water inlet V5 and a water outlet manual valve V6 of the mixed bed are closed, a pneumatic pressure release valve V7 is opened until the pressure is less than 0.1MPa, then the pressure release valve is closed, isolation valves V1, V2, V3 and V4 are opened, a manual valve V13 at the inlet of a booster pump 2 is opened for water injection, then the booster pump 2 is started, a manual valve V15 at the outlet of the booster pump 2 is slowly opened, the flow is regulated to a set value, the system circulation is established, and the #1 mixed bed is put into operation. When the #1 mixed bed exits, the booster pump 2 is stopped, the isolation valves V1, V2, V3 and V4 are closed, the pneumatic pressure relief valve V7 is opened until the pressure is less than 0.1MPa, the pressure relief valve is closed, and the exit of the #1 mixed bed is completed. Before regeneration after the #1 mixed bed fails, it is required to confirm that isolation valves V1, V2, V3 and V4 are all in a closed state, the #1 mixed bed is in a shutdown state, program control is switched to automatic operation, and then normal resin regeneration program control operation of a condensate polishing system is carried out.
After the circulating water reaches the standard, if the #1 mixed bed needs to be put into operation to treat the condensed water, firstly, the isolation valves V1, V2, V3 and V4 are confirmed to be in a closed state, the water inlet V5 and the water outlet manual valve V6 of the #1 mixed bed are opened, and then the normal operation and shutdown programmed operation of the condensed water fine treatment system are carried out.
If the circulating water quality is abnormal, the operation is carried out according to the first operation step and the water is reused for circulating water treatment. The safety valves arranged close to the isolation valves V2 and V3 of the system mainly prevent the accident of the leakage of condensed water caused by high mixed water inlet and untight water outlet valves in the operation process, and protect the safety of low-pressure system pipelines and equipment.
Claims (10)
1. The utility model provides a SCAL type indirect air cooling circulating water treatment system, a serial communication port, including cold circulating water pipeline (1), cold circulating water pipeline (1) is connected with isolating valve V1 through interface N1, isolating valve V1 and booster pump (2) access connection, booster pump (2) export is connected with isolating valve V2, isolating valve V2 mixes bed (3) access connection through interface N2 with high speed, high speed mixes bed (3) export and resin trapper (4) access connection, resin trapper (4) export is connected with isolating valve V3 through interface N3, isolating valve V3 is connected with isolating valve V4, isolating valve V4 is connected with hot circulating water pipeline (5) through interface N4, cold circulating water pipeline 1 output connects condenser hydroecium (6), the output of condenser hydroecium (6) connects hot circulating water pipeline (5).
2. The SCAL type indirect air-cooling circulating water treatment system as claimed in claim 1, wherein the specification of the booster pump (2) is H-0.3 MPa, and Q-200 m3/h。
3. An indirect air-cooling circulating water treatment system of SCAL type according to claim 1, wherein the inlet of the booster pump (2) is provided with a manual isolation valve V13, and the outlet is provided with a check valve V14 and a manual isolation valve V15 in sequence.
4. The SCAL type indirect air-cooling circulating water treatment system of claim 3, wherein a safety valve V10 is arranged between the isolation valve V15 and the isolation valve V2 and close to V2, and the setting pressure is 0.6 MPa.
5. An indirect air-cooled circulating water treatment system of SCAL type according to claim 1, wherein the outlet of the booster pump (2) is provided with an in-situ pressure gauge and a remote flowmeter.
6. The SCAL type indirect air-cooling circulating water treatment system of claim 1, wherein a safety valve V11 and a check valve V12 are arranged on a pipeline between the isolation valve V3 and the isolation valve V4, a safety valve V11 is arranged near the isolation valve V3, the operating pressure is 0.6MPa, and the operating pressure is a check valve V12 near the isolation valve V4.
7. An indirect air-cooled circulating water treatment system of SCAL type according to claim 1, wherein the interface N1 is located on the outer side of the cold circulating water pipe (1) near the condenser water chamber (6).
8. The SCAL type indirect air-cooling circulating water treatment system as claimed in claim 1, wherein the interface N2 is located inside an inlet pneumatic valve V8 of the high-speed mixing bed (3).
9. The SCAL type indirect air-cooling circulating water treatment system as claimed in claim 1, wherein the interface N3 is located inside an outlet pneumatic valve V9 of the high-speed mixing bed (3).
10. An indirect air-cooled circulating water treatment system of SCAL type according to claim 1, wherein the interface N4 is located outside the hot circulating water pipe (5) near the condenser water chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069862.3U CN213803227U (en) | 2020-09-21 | 2020-09-21 | SCAL type indirect air cooling circulating water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069862.3U CN213803227U (en) | 2020-09-21 | 2020-09-21 | SCAL type indirect air cooling circulating water treatment system |
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| CN213803227U true CN213803227U (en) | 2021-07-27 |
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| CN202022069862.3U Active CN213803227U (en) | 2020-09-21 | 2020-09-21 | SCAL type indirect air cooling circulating water treatment system |
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