CN112459854A - Circulating cooling water system and cooling method for steam turbine set - Google Patents
Circulating cooling water system and cooling method for steam turbine set Download PDFInfo
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- CN112459854A CN112459854A CN202011277454.5A CN202011277454A CN112459854A CN 112459854 A CN112459854 A CN 112459854A CN 202011277454 A CN202011277454 A CN 202011277454A CN 112459854 A CN112459854 A CN 112459854A
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- water
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- inlet pipe
- gate valve
- water inlet
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- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 239000000498 cooling water Substances 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 234
- 230000005484 gravity Effects 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000003134 recirculating effect Effects 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 7
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- -1 salt ions Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The embodiment of the application discloses a circulating cooling water system for a steam turbine set and a water supplementing method. The method comprises the following steps: the system comprises a generator set circulating water system, a generator set forebay, a water inlet main pipe, a first water inlet pipe, a first gate valve, a cooling water pump, a second water inlet pipe, a second gate valve, a circulating water pump, a third gate valve, cooling equipment, a water return pipe, a cold water tower, a detector, a third water inlet pipe, a mechanical filter and a gravity filter; the generator set circulating water system is connected with the generator set forebay through a water inlet main pipe; the generator set forebay is respectively connected with the first water inlet pipe and the second water inlet pipe; the first gate valve is connected with the cooling water pump through a first water inlet pipe; the circulating water pump is respectively connected with the second water inlet pipe, the second gate valve and the third gate valve; the cooling equipment is respectively connected with the second water inlet pipe, the water return pipe, the cold water tower, the detector, the mechanical filter and the gravity filter; the mechanical filter is connected with the gravity filter through a third water inlet pipe; the generator set circulating water system is used for enabling circulating water to enter cooling equipment through a water inlet pipe through a generator set forebay, the cooling equipment is used for enabling the circulating water to enter a cooling tower through a water return pipe, the cooling tower is used for enabling cooled water to enter a mechanical filter through a third water inlet pipe, and the mechanical filter and a gravity filter are used for improving a water quality filtering effect.
Description
Technical Field
The embodiment of the application relates to the field of machine manufacturing, in particular to a circulating cooling water system and a cooling method for a steam turbine set.
Background
In the process of industrial development, a steam turbine unit is a main unit for development of industrial technology, a circulating water cooling system in the unit is a key link, and the cooling water system is further optimized under the concept of energy conservation and emission reduction, so that the industrial benefit of a factory is improved.
In the prior art, a lot of factories implement zero-discharge of sewage in factories, and water treated by adopting a sewage recycling project is mixed with river water and then supplemented into each circulating water system, but because the existing equipment does not have a desalting facility, the salt content of produced new water is continuously concentrated, various salt ions in the water are relatively complex, if the salt content circulates in the system for a long time, not only can the corrosion and scaling of pipelines be caused, but also the water quality of each system is continuously deteriorated, and the corrosion and scale inhibition medicament in the water is difficult to be well ensured, so that suspended matters, algae, slime and salt content in the system are relatively high. If the steam turbine runs in the water quality environment for a long time, sediments and even scales are continuously generated in the cooling equipment of the steam turbine, the heat exchange effect of the cooling equipment is reduced, and the normal production is influenced.
Disclosure of Invention
The embodiment of the application provides a cooling water replenishing system and a water replenishing method for a steam turbine set, which are used for filtering water through a mechanical filter and a gravity filter, so that the final effect of water quality can be ensured through layer-by-layer filtering.
The embodiment of this application provides a first aspect of turbine unit's cooling water charging system, includes: the system comprises a generator set circulating water system, a generator set forebay, a water inlet main pipe, a first water inlet pipe, a first gate valve, a cooling water pump, a second water inlet pipe, a second gate valve, a circulating water pump, a third gate valve, cooling equipment, a water return pipe, a cold water tower, a detector, a third water inlet pipe, a mechanical filter and a gravity filter;
the generator set circulating water system is connected with the generator set forebay through the water inlet main pipe;
the generator set forebay is respectively connected with the first water inlet pipe and the second water inlet pipe;
the first gate valve is connected with the cooling water pump through the first water inlet pipe;
the circulating water pump is respectively connected with the second water inlet pipe, the second gate valve and the third gate valve;
the cooling equipment is respectively connected with the second water inlet pipe, the water return pipe, the cold water tower, the detector, the mechanical filter and the gravity filter;
the mechanical filter is connected with the gravity filter through the third water inlet pipe;
generating set circulating water system is used for passing through the generating set forebay passes through the circulating water inlet tube gets into cooling arrangement, cooling arrangement be used for with the circulating water passes through the wet return and gets into the cold water tower, the cold water tower be used for with water after the cooling passes through the third inlet tube gets into mechanical filter, mechanical filter and gravity filter is used for improving quality of water filter effect.
Optionally, the mechanical filter is connected with the cooling tower through the third water inlet pipe, and the mechanical filter is used for filtering circulating water with a small particle size.
Optionally, the gravity filter is disposed on one side of the third water inlet pipe after being filtered by the mechanical filter, and the gravity filter is used for filtering the water quality after being filtered by the mechanical filter.
Optionally, the detector is arranged at an outlet of the cooling tower, and the detector is used for detecting the water quality discharged from the cooling tower.
Optionally, when the detector detects that water quality at the outlet of the cooling tower does not meet the preset conditions, the outlet gate valve of the cooling tower is conducted, and circulating water enters the mechanical filter through the third water inlet pipe.
Optionally, the cooling water pump is arranged on one side close to the steam turbine generator set machine room.
Optionally, the first gate valve is disposed on one side of the cooling water pump, and the first gate valve is not attached to the cooling water pump.
Optionally, the circulating water pump is arranged on the same water inlet pipe path as the cooling water pump.
Optionally, the second gate valve and the third gate valve are respectively arranged on two sides of the circulating water pump, the second gate valve is not attached to the circulating water pump, and the third gate valve is not attached to the circulating water pump.
Optionally, the cooling water device includes a generator air cooler, an oil cooler, a water cooler, a feed pump oil cooler, and a water pump motor air cooler.
According to the technical scheme, the embodiment of the application has the following advantages: the system is characterized in that a generator set circulating water system, a generator set forebay, a water inlet main pipe, a first water inlet pipe, a first gate valve, a cooling water pump, a second water inlet pipe, a second gate valve, a circulating water pump, a third gate valve, cooling equipment, a water return pipe, a cold water tower, a detector, a third water inlet pipe, a mechanical filter and a gravity filter are arranged; the generator set is connected with a generator set forebay through a water inlet main pipe, the generator set forebay is respectively connected with a first water inlet pipe and a second water inlet pipe, a first gate valve is connected with a cooling water pump through the first water inlet pipe, and a circulating water pump is respectively connected with the second water inlet pipe, a second gate valve and a third gate valve; the cooling equipment is respectively connected with the second water inlet pipe, the water return pipe, the cold water tower, the detector, the mechanical filter and the gravity filter; the mechanical filter is connected with the gravity filter through the third water inlet pipe; the generator set circulating water system is used for enabling circulating water to enter cooling equipment through a water inlet pipe through a generator set forebay, the cooling equipment is used for enabling the circulating water to enter a cooling tower through a water return pipe, when the detector detects that the water quality is unqualified, the cooling tower is used for enabling the cooled water to enter a mechanical filter through a third water inlet pipe, the mechanical filter and a gravity filter are used for improving the water quality filtering effect, and the final effect of the water quality can be ensured through the double water quality filtering of the mechanical filter and the gravity filter by means of layer-by-layer filtering.
Drawings
FIG. 1 is a schematic view of a recirculating cooling water system for a steam turbine plant according to an embodiment of the present invention.
Detailed Description
The embodiment of the application provides a cooling water replenishing system and a water replenishing method for a steam turbine set, which are used for filtering water through a mechanical filter and a gravity filter, so that the final effect of water quality can be ensured through layer-by-layer filtering.
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a first aspect of the present application provides an embodiment of a cooling water replenishing system for a steam turbine set, including: the system comprises a generator set circulating water system 1, a generator set forebay 2, a water inlet main pipe 3, a first water inlet pipe 14, a first gate valve 4, a cooling water pump 5, a second water inlet pipe 15, a second gate valve 6, a circulating water pump 7, a third gate valve 8, cooling equipment 9, a water return pipe 16, a cold water tower 10, a detector 11, a third water inlet pipe 17, a mechanical filter 12 and a gravity filter 13; wherein the generator set circulating water system 1 is connected with the generator set forebay 2 through a water inlet main pipe 3; the generator set forebay 2 is respectively connected with a first water inlet pipe 14 and a second water inlet pipe 15; the first gate valve 4 is connected with the cooling water pump 5 through a first water inlet pipe 14; the circulating water pump 7 is respectively connected with the second water inlet pipe 15, the second gate valve 6 and the third gate valve 8; the cooling device 9 is respectively connected with a second water inlet pipe 15, a water return pipe 16, a cooling tower 10, a detector 11, a mechanical filter 12 and a gravity filter 13; the mechanical filter 12 is connected with the gravity filter 13 through a third water inlet pipe 17; the generator set circulating water system 1 is used for enabling circulating water to enter a cooling device 9 through a water inlet pipe through a generator set forebay 2, the cooling device 9 is used for enabling the circulating water to enter a cooling tower 10 through a water return pipe 16, the cooling tower 10 is used for enabling cooled water to enter a mechanical filter 12 through a third water inlet pipe 17, and the mechanical filter 12 and a gravity filter 13 are used for improving the water quality filtering effect.
In this embodiment, the mechanical filter 12 is improved, a facility capable of filtering small particles is added in the device, quartz sand and anthracite are used as main effective particles, the gravity filter 13 adopts a method of taking out a filtered water cap, the diameter of a round hole is expanded to be more than 32MM, so that the water filtering area can be obviously improved, two layers of stainless steel nets are added on the pore plate, the surface is fixed by screws, the situation that the surface cannot be displaced is ensured, and in addition, the filtering material is further improved, so that the water quality can be filtered to obtain the effect meeting the requirements.
Optionally, the mechanical filter 12 is connected to the cooling tower 10 through a third water inlet pipe 17, wherein the mechanical filter 12 is used for filtering circulating water with a small particle size, the gravity filter 13 is disposed on one side of the third water inlet pipe 17 filtered by the mechanical filter 12, and the gravity filter 13 is used for filtering water quality filtered by the mechanical filter 12, because the mechanical filter only filters water with a small particle size, and the rest of the water quality still needs to be further optimized for filtering to possibly achieve the required effect.
Optionally, the detector 11 is disposed at an outlet of the cooling tower 10, wherein the cooling tower 10 includes a generator air cooler, an oil cooler, a water pump oil cooler and a water pump motor air cooler, the detector 11 is configured to detect water quality of the discharged cooling tower, when the detector 11 detects that the water quality at the outlet of the cooling tower 10 does not satisfy a preset condition, a gate valve disposed below the cooling tower 10 is turned on, and water is filtered by the mechanical filter 12 through the third water inlet pipe 17.
Optionally, cooling water pump 5 sets up in being close to steam turbine generator set computer lab one side, and first gate valve 4 sets up in cooling water pump 5 one side to with cooling water pump 5 not laminating, circulating water pump 7 sets up and lies in that cooling water pump 5 is not in same inlet tube route, wherein, second gate valve 6 and third gate valve 8 set up respectively in circulating water pump 7's both sides, and with second gate valve 6 and circulating water pump 7 not laminating, third gate valve 8 and circulating water pump 7 not laminating.
A second aspect of the present application provides an embodiment of a method for supplementing cooling water of a steam turbine, including:
connecting a generator set circulating water system 1 with a generator set forebay 2 through a water inlet main pipe 3; the generator set forebay 2 is respectively connected with a first water inlet pipe 14 and a second water inlet pipe 15; the first gate valve 4 is connected with the cooling water pump 5 through a first water inlet pipe 14; the circulating water pump 7 is respectively connected with the second water inlet pipe 15, the second gate valve 6 and the third gate valve 8; the cooling device 9 is respectively connected with a second water inlet pipe 15, a water return pipe 16, a cooling tower 10, a detector 11, a mechanical filter 12 and a gravity filter 13; the mechanical filter 12 is connected with the gravity filter 13 through a third water inlet pipe 17; the generator set circulating water system 1 is used for enabling circulating water to enter a cooling device 9 through a water inlet pipe through a generator set forebay 2, the cooling device 9 is used for enabling the circulating water to enter a cooling tower 10 through a water return pipe 16, the cooling tower 10 is used for enabling cooled water to enter a mechanical filter 12 through a third water inlet pipe 17, and the mechanical filter 12 and a gravity filter 13 are used for improving the water quality filtering effect.
Specifically, when the generator is in a non-heat supply period, circulating water from a circulating water system 1 of the generator set respectively enters a front pool 2 of the generator set through a water inlet main pipe 3, the circulating water from the front pool 2 of the generator set enters a first branch water inlet pipe 14 and passes through a first gate valve 4, the first gate valve 4 is conducted, the circulating water enters a cooling water pump 5, the cooling water pump 5 treats the water and then enters a cooling device 9, the other branch water enters a second gate valve 6 through a second water inlet pipe 15, the second gate valve 6 opens the rear circulating water pump 7 to treat the water, then the circulating water enters a third gate valve 8, the water after the third gate valve 8 is conducted also enters a cooling device 9, the circulating water of the two branches enters the cooling device 9 and then enters a cooling tower 10 through a water return pipe after being treated by an air cooler, an oil cooler, a water cooler, the detector 11 is arranged at the outlet of the cooling tower 10, when the detector 11 detects that the water quality does not meet the requirement, the gate valve below the cooling tower 10 is conducted, and water enters the mechanical filter 12 and the gravity filter to be subjected to multi-layer filtering, so that the water quality meets the requirement.
It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A recirculating cooling water system for a steam turbine plant, comprising:
the system comprises a generator set circulating water system, a generator set forebay, a water inlet main pipe, a first water inlet pipe, a first gate valve, a cooling water pump, a second water inlet pipe, a second gate valve, a circulating water pump, a third gate valve, cooling equipment, a water return pipe, a cold water tower, a detector, a third water inlet pipe, a mechanical filter and a gravity filter;
the generator set circulating water system is connected with the generator set forebay through the water inlet main pipe;
the generator set forebay is respectively connected with the first water inlet pipe and the second water inlet pipe;
the first gate valve is connected with the cooling water pump through the first water inlet pipe;
the circulating water pump is respectively connected with the second water inlet pipe, the second gate valve and the third gate valve;
the cooling equipment is respectively connected with the second water inlet pipe, the water return pipe, the cold water tower, the detector, the mechanical filter and the gravity filter;
the mechanical filter is connected with the gravity filter through the third water inlet pipe;
generating set circulating water system is used for passing through the generating set forebay passes through the circulating water inlet tube gets into cooling arrangement, cooling arrangement be used for with the circulating water passes through the wet return and gets into the cold water tower, the cold water tower be used for with water after the cooling passes through the third inlet tube gets into mechanical filter, mechanical filter and gravity filter is used for improving quality of water filter effect.
2. The recirculating cooling water system for a steam turbine set as set forth in claim 1, wherein the mechanical filter is connected to the cooling tower through the third water inlet pipe, and the mechanical filter is used for filtering circulating water having a small particle size.
3. The recirculating cooling water system for a steam turbine set as set forth in claim 1, wherein the gravity filter is disposed on a side of the third water-intake pipe after being filtered by the mechanical filter, the gravity filter being for filtering water quality filtered by the mechanical filter.
4. The recirculating cooling water system for a steam turbine set as set forth in claim 1, wherein the detector is provided at an outlet of the cooling tower, the detector being for detecting the quality of the water discharged from the cooling tower.
5. The recirculating cooling water system for a steam turbine set as set forth in claim 4, wherein when the detector detects that the water quality at the outlet of the cooling tower does not satisfy the predetermined condition, the outlet gate valve of the cooling tower is opened, and the recirculating water enters the mechanical filter through the third inlet pipe.
6. A recirculating cooling water system for a steam turbine according to claim 1, wherein the cooling water pump is provided on a side close to the steam turbine generator room.
7. The recirculating cooling water system for a steam turbine according to claim 6, wherein the first gate valve is provided on the cooling water pump side, and the first gate valve is not attached to the chilled water pump.
8. A recirculating cooling water system for a turboset according to claim 1, wherein the recirculating water pump is disposed not in the same water intake path as the cooling water pump.
9. The recirculating cooling water system for a steam turbine set according to claim 8, wherein the second gate valve and the third gate valve are provided on both sides of the recirculating water pump, respectively, and the second gate valve is not attached to the recirculating water pump and the third gate valve is not attached to the recirculating water pump.
10. A recirculating cooling water system for a steam turbine according to any one of claims 1 to 3, wherein the cooling water equipment includes a generator air cooler, an oil cooler, a water cooler, a feed pump oil cooler, and a pump motor air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277454.5A CN112459854A (en) | 2020-11-16 | 2020-11-16 | Circulating cooling water system and cooling method for steam turbine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011277454.5A CN112459854A (en) | 2020-11-16 | 2020-11-16 | Circulating cooling water system and cooling method for steam turbine set |
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| CN112459854A true CN112459854A (en) | 2021-03-09 |
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| CN202011277454.5A Pending CN112459854A (en) | 2020-11-16 | 2020-11-16 | Circulating cooling water system and cooling method for steam turbine set |
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|---|---|---|---|---|
| WO1991004229A1 (en) * | 1989-09-14 | 1991-04-04 | Biological Control Systems Pty. Ltd. | Water treatment |
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| CN208343409U (en) * | 2018-05-08 | 2019-01-08 | 河北日泰新型管材有限公司 | A kind of plastic products cooling water of extruding machine circulatory system |
| CN214330708U (en) * | 2020-11-16 | 2021-10-01 | 湖南华润电力鲤鱼江有限公司 | Recirculated cooling water system that turboset used |
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2020
- 2020-11-16 CN CN202011277454.5A patent/CN112459854A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991004229A1 (en) * | 1989-09-14 | 1991-04-04 | Biological Control Systems Pty. Ltd. | Water treatment |
| JPH07218186A (en) * | 1994-02-04 | 1995-08-18 | Kurita Water Ind Ltd | Method and apparatus for treating circulating cooling water |
| JP2004188270A (en) * | 2002-12-09 | 2004-07-08 | Kurita Water Ind Ltd | Method and equipment for filtering water containing precipitable suspended material |
| US20130015137A1 (en) * | 2011-07-14 | 2013-01-17 | Ana-Mariana Urmenyi | Method of maintaining water quality in a process stream |
| CN103306753A (en) * | 2013-05-24 | 2013-09-18 | 华电国际电力股份有限公司山东分公司 | Cooling water system for turboset and cooling water supplying method |
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