CN219589267U - Circulating cooling water system suitable for desulfurization device - Google Patents
Circulating cooling water system suitable for desulfurization device Download PDFInfo
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- CN219589267U CN219589267U CN202320209682.1U CN202320209682U CN219589267U CN 219589267 U CN219589267 U CN 219589267U CN 202320209682 U CN202320209682 U CN 202320209682U CN 219589267 U CN219589267 U CN 219589267U
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Abstract
The utility model belongs to the technical field of cooling water circulation systems, and provides a circulating cooling water system suitable for a desulfurization device, which comprises a slurry pump machine seal cooling water point, a supply unit, a cooling circulating water tank, a circulating cooling water feed pipeline, a circulating cooling water return pipe, a circulating cooling water return pipeline and at least two cooling circulating water pumps, wherein the slurry pump machine seal cooling water point is arranged on the surface of the slurry pump machine seal cooling water point; the outlet of the supply unit is communicated with the inlet of the cooling circulating water tank through a cooling water supplementing pipeline; the circulating cooling water return pipe is used for communicating the water point outlet for mechanical sealing cooling water of the slurry pump with the cooling circulating water tank return port, the circulating cooling water return pipe is used for communicating the circulating cooling water feed pipe with the cooling circulating water tank return port, and a return control valve is arranged on the circulating cooling water return pipe. The system can effectively improve the water quality of the cooling circulating water system, avoid the problems of pipeline scaling, corrosion, blockage and the like, and reduce the consumption of circulating cooling water.
Description
Technical Field
The utility model belongs to the technical field of cooling water circulation systems, and particularly relates to a circulating cooling water system suitable for a desulfurization device.
Background
The general requirements for the quality of the process water of the wet desulfurization system are not high, and the requirements for the concentration of chloride ions and other ion concentrations such as suspended matters are not high according to two most relevant standards DL/T5068-2006 technical rules for chemical design of thermal power plants and DL/T5196-2004 technical rules for flue gas desulfurization design of thermal power plants.
At present, circulating cooling water of a desulfurization system matched with the rear of a furnace of a majority of power plants is introduced from process water, and an open system is adopted for machine sealing cooling of equipment. Part of cooling water of a desulfurization system of the power plant is collected to the internal circulation of the desulfurization system through a trench, and the other part of cooling water flows into a desulfurization process water tank to be used as process water supplementing water after being collected through a pipeline. The desulfurization process water is used as pump mechanical seal cooling water, so that the quality of the process water is generally low, the inside of a pipeline is easy to scale and block after long-time operation, and most of the pipelines are relatively thin, so that the long-term stable operation of equipment is very unfavorable.
Secondly, the cooling water adopts an open system, and the total water consumption of the cooling system is larger because of the large number of slurry pumps in the desulfurization system. A large amount of cooling water enters the desulfurization system for recycling, and the difficulty of controlling the water balance of the system is increased. Therefore, the system is simple, but the cooling water consumption is large, the water quality is poor, and a large amount of discharged wastewater is required in actual operation because the water balance of the desulfurization system is not well controlled, so that the waste of water resources is caused to a certain extent.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides the circulating cooling water system suitable for the desulfurization device, and the water quality of the cooling circulating water system is effectively improved through optimizing the system, so that the problems of pipeline scaling, corrosion, blockage and the like can be avoided, and the consumption of circulating cooling water is reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the circulating cooling water system suitable for the desulfurization device comprises a water point for mechanically sealing cooling water by a slurry pump, a supply unit for providing desalted water, a cooling circulating water tank, a circulating cooling water supply pipeline, a circulating cooling water return pipe, a circulating cooling water return pipeline and at least two cooling circulating water pumps;
the outlet of the supply unit is communicated with the inlet of the cooling circulating water tank through a cooling water supplementing pipeline, and a desalted water main valve is arranged at the outlet of the supply unit;
the outlet of the cooling circulating water tank is simultaneously communicated with the inlets of the two cooling circulating water pumps, the outlets of the two cooling circulating water pumps are simultaneously communicated with one end of the circulating cooling water supply pipeline, the other end of the circulating cooling water supply pipeline is communicated with the water point inlet of the slurry pump mechanically sealed cooling water, the circulating cooling water return pipe is used for communicating the water point outlet for mechanical sealing cooling water of the slurry pump with the water return port of the cooling circulating water tank, the circulating cooling water return pipe is used for communicating the circulating cooling water feed pipe with the water return port of the cooling circulating water tank, and the circulating cooling water return pipe is provided with a return control valve.
Preferably, the cooling water supplementing pipeline is provided with a filtering device and a bypass overhauling device.
Preferably, the cooling water supplementing pipeline is provided with a pressure measuring point.
Preferably, the inlet of the cooling circulation water tank is provided with an automatic valve.
Preferably, the automatic valve is any one of an electric ball valve, an electric butterfly valve and a float valve.
Preferably, a temperature measuring instrument is arranged in the cooling circulation water tank.
Preferably, a liquid level measuring device is arranged in the cooling circulation water tank.
Preferably, the outlet of the cooling circulation water tank is provided with an outlet filtering device.
Preferably, an overflow emptying device is arranged in the cooling circulation water tank.
Preferably, a radiator is arranged on the circulating cooling water return pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. the circulating cooling water system suitable for the desulfurization device adopts desalted water as system water supplement, circulates in the cooling water system, can reduce pollution and corrosion to pumps and pipelines, can effectively prevent the pipelines from being blocked, greatly improves the safety and reliability of equipment operation, reduces the equipment maintenance workload, can reduce the process water consumption of desulfurization coefficients, and is convenient for controlling the water balance of the desulfurization system.
2. The circulating cooling water system suitable for the desulfurization device provided by the utility model is characterized in that the circulating cooling water return pipe is provided with the return control valve, and the water supply quantity can be adjusted according to the running condition of the circulating cooling water system equipment so as to adapt to the requirements of different working conditions.
Drawings
FIG. 1 is a schematic diagram of a circulating cooling water system for a desulfurization apparatus according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a part of a circulating cooling water system suitable for a desulfurization device according to an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a supply unit; 2. a desalted water main valve; 3. a filtering device; 4. a pressure measuring point; 5. an automatic valve; 6. a temperature measuring instrument; 7. a cooling circulation water tank; 8. a liquid level measuring device; 9. an outlet filtration device; 10. a cooling circulating water pump; 11. a reflux control valve; 12. mechanically sealing a water point for cooling water by a slurry pump; 13. a heat sink; 14. a cooling water replenishing pipe; 15. a circulating cooling water supply pipe; 16. a circulating cooling water return pipe; 17. and a circulating cooling water return pipeline.
Detailed Description
The present utility model will be described in further detail with reference to specific examples so as to more clearly understand the present utility model by those skilled in the art.
It should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined. The specific meaning of such terms in this patent will be understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1, the embodiment provides a circulating cooling water system suitable for a desulfurization device, which comprises five groups of slurry pump mechanically sealed cooling water points 12, a supply unit 1 for providing desalted water, a cooling circulating water tank 7, a circulating cooling water supply pipeline 15, a circulating cooling water return pipe 16, a circulating cooling water return pipeline 17 and two cooling circulating water pumps 10;
the outlet of the supply unit 1 is communicated with the inlet of the cooling circulation water tank 7 through a cooling water supplementing pipeline 14, and the outlet of the supply unit 1 is provided with a desalted water main valve 2;
the outlet of the cooling circulation water tank 7 is simultaneously communicated with the inlets of the two cooling circulation water pumps 10, the outlets of the two cooling circulation water pumps 10 are simultaneously communicated with one end of the circulating cooling water supply pipeline 15, the other end of the circulating cooling water supply pipeline 15 is communicated with the inlet of the slurry pump mechanical seal cooling water point 12, the circulating cooling water return pipeline 17 is used for communicating the outlet of the slurry pump mechanical seal cooling water point 12 with the water return port of the cooling circulation water tank 7, the circulating cooling water return pipeline 16 is used for communicating the circulating cooling water supply pipeline 15 with the water return port of the cooling circulation water tank 7, and the circulating cooling water return pipeline 16 is provided with a return control valve 11.
In this embodiment, the supply unit 1 may be a boiler demineralized water common supply pipe, the boiler is configured to provide demineralized water to a system, the demineralized water main valve 2 is opened, the demineralized water in the boiler enters the cooling circulation water tank 7 through the cooling water replenishing pipe 14 to be stored, then one of the cooling circulation water pumps 10 is opened, the demineralized water in the cooling circulation water tank 7 is pumped to each group of pump-sealed cooling water points 12 through the circulating cooling water supply pipe 15, and each group of pump-sealed cooling water points 12 uses cooling water to be connected to the circulating cooling water return pipe 17 through a branch pipe, and then flows back into the cooling circulation water tank 7, thereby completing the circulation process of cooling water.
Wherein, the return port of cooling circulation water tank 7 can be equipped with two, two the return port all set up in on the cooling circulation water tank 7 top cap, two moreover the return port can be transparent material, one of them the return port with circulation cooling water back flow 16 intercommunication, another the return port with circulation cooling water back flow pipeline 17 intercommunication sets up like this, two the return port is mutually noninterfere, and transparent material then can be convenient for the staff observe the backward flow condition of judging two back flows fast.
As shown in fig. 2, the circulating cooling water return pipe 16 and the return control valve 11 form a bypass adjusting system of the circulating pump, and the water supply amount can be adjusted by adjusting the opening degree of the return control valve 11 according to the running condition of the circulating cooling water system equipment so as to adapt to the requirements of different working conditions, and the circulating cooling water return pipe is simple in structure and convenient to use.
The two cooling circulating water pumps 10 are arranged in parallel, one is operated for standby, and the whole stable operation of the system can be ensured.
In some other embodiments, three cooling circulation water pumps 10 may be disposed in parallel, that is, the outlets of the cooling circulation water tanks 7 are simultaneously communicated with the inlets of the three cooling circulation water pumps 10, and the outlets of the three cooling circulation water pumps 10 are simultaneously communicated with one end of the circulation cooling water supply pipe 15. One can run and two can stand by; two running can be performed, so that the water supply quantity is increased; three operation can be performed, and the water supply amount is further increased.
In this embodiment, the cooling water replenishing pipe 14 is provided with a filtering device 3 and a bypass maintenance device. The desalinated water can be subjected to preliminary filtration, and the pipeline is effectively prevented from being blocked.
In this embodiment, the cooling water replenishing pipe 14 is provided with a pressure measuring point 4. It is possible to detect whether the water pressure is stable.
In this embodiment, an automatic valve 5 is disposed at the inlet of the cooling circulation water tank 7. The automatic valve 5 can play a role in double guarantee.
The automatic valve 5 may be a float valve. Specifically, after opening the demineralized water main valve 2, make demineralized water can continuously flow into in the cooling circulation water tank 7, when the water level in the cooling circulation water tank 7 reaches certain altitude, make the floater of ball float valve float, can the automatic shutdown ball float valve, and then the automatic supply of cutting off demineralized water, then close the demineralized water main valve 2 can, effectively prevent to add too much demineralized water.
In some other embodiments, the automatic valve 5 may be an electrically operated ball valve. The automatic valve 5 may be an electric butterfly valve. Through the electric control switch, convenient to use.
In this embodiment, a temperature measuring instrument 6 is disposed in the cooling circulation water tank 7. The temperature of the water in the cooling circulation tank 7 can be monitored at any time.
In this embodiment, a liquid level measuring device 8 is disposed in the cooling circulation tank 7. The water level in the cooling circulation water tank 7 can be monitored at any time to judge whether the automatic valve 5 needs to be opened to supplement cooling water.
The outlet of the cooling circulation water tank 7 is provided with an outlet filtering device 9. Specifically, two outlets can be formed in the side wall of the cooling circulation water tank 7, the two outlets are respectively communicated with the inlets of the two cooling circulation water pumps 10, and the two outlets are respectively provided with an outlet filtering device 9, so that impurities deposited in the cooling circulation water tank 7 can be prevented from being brought into the cooling circulation water pumps 10 by cooling water.
An overflow emptying device is arranged in the cooling circulation water tank 7. The overflow draining device can automatically drain the excessive water, and effectively prevent the excessive water from being added into the cooling circulation water tank 7.
The circulating cooling water return pipeline 17 is provided with a radiator 13. The heat sink 13 may be a finned tube heat exchanger. The water returned from the outlet of the water point 12 for mechanical sealing cooling water of the slurry pump flows back to the cooling circulation water tank 7 through the circulating cooling water return pipeline 17, and the temperature of the circulating cooling water is slightly increased, so that the circulating cooling water is required to exchange heat with air through a radiator with a finned tube, and the circulating cooling water is maintained at a certain temperature for circulation use.
In summary, the circulating cooling water system suitable for the desulfurization device provided by the embodiment has the advantages of simple system, strong practicability, capability of being designed into a skid-mounted structure, capability of simplifying the design and installation of the desulfurization system by adopting complete equipment supply, and certain popularization.
Mechanisms, components, and members not described in the specific structure of the present utility model are all existing structures already existing in the prior art. Can be purchased directly from the market.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The circulating cooling water system suitable for the desulfurization device comprises a water point (12) for mechanically sealing cooling water by a slurry pump, and is characterized by further comprising a supply unit (1) for providing desalted water, a cooling circulating water tank (7), a circulating cooling water supply pipeline (15), a circulating cooling water return pipe (16), a circulating cooling water return pipeline (17) and at least two cooling circulating water pumps (10);
the outlet of the supply unit (1) is communicated with the inlet of the cooling circulation water tank (7) through a cooling water supplementing pipeline (14), and the outlet of the supply unit (1) is provided with a desalted water main valve (2);
the utility model discloses a cooling circulation water tank, including cooling circulation water tank (7), cooling circulation water pump (10), circulating cooling water pump (16), cooling circulation water tank (7) export and two cooling circulation water pump (10) export and circulating cooling water feed pipe (15) one end intercommunication simultaneously, circulating cooling water feed pipe (15) other end with thick liquid pump mechanical seal cooling water is with water point (12) entry intercommunication, circulating cooling water return pipe (17) are used for the intercommunication thick liquid pump mechanical seal cooling water is with water point (12) export with cooling circulation water tank (7) return water mouth, circulating cooling water return pipe (16) are used for the intercommunication circulating cooling water feed pipe (15) with cooling circulation water tank (7) return water mouth, be equipped with reflux control valve (11) on circulating cooling water return pipe (16).
2. The circulating cooling water system for a desulfurization device according to claim 1, wherein the cooling water supplementing pipe (14) is provided with a filtering device (3) and a bypass maintenance device.
3. The circulating cooling water system for a desulfurization apparatus according to claim 1, wherein the cooling water supply pipe (14) is provided with a pressure measuring point (4).
4. A recirculating cooling water system suitable for use in a desulphurisation plant according to claim 1, characterised in that the inlet of the cooling recirculating tank (7) is provided with an automatic valve (5).
5. The circulating cooling water system for a desulfurization apparatus according to claim 4, wherein the automatic valve (5) is any one of an electric ball valve, an electric butterfly valve, and a float valve.
6. The circulating cooling water system for a desulfurization device according to claim 1, wherein a temperature measuring instrument (6) is arranged in the cooling circulating water tank (7).
7. A recirculating cooling water system suitable for use in a desulphurisation plant according to claim 1, characterised in that a level measuring device (8) is provided in the cooling recirculating tank (7).
8. A recirculating cooling water system suitable for use in a desulphurisation plant according to claim 1, characterised in that the outlet of the cooling recirculating tank (7) is provided with outlet filtering means (9).
9. A recirculating cooling water system suitable for use in a desulphurisation plant according to claim 1, characterised in that overflow drain means are provided in the cooling recirculating tank (7).
10. A recirculating cooling water system suitable for use in a desulphurisation apparatus according to claim 1, characterised in that the recirculating cooling water return line (17) is provided with a radiator (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320209682.1U CN219589267U (en) | 2023-02-07 | 2023-02-07 | Circulating cooling water system suitable for desulfurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320209682.1U CN219589267U (en) | 2023-02-07 | 2023-02-07 | Circulating cooling water system suitable for desulfurization device |
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| CN219589267U true CN219589267U (en) | 2023-08-25 |
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| CN202320209682.1U Active CN219589267U (en) | 2023-02-07 | 2023-02-07 | Circulating cooling water system suitable for desulfurization device |
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