CN110779347B - Intelligent control device for circulating water system and application method - Google Patents
Intelligent control device for circulating water system and application method Download PDFInfo
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- CN110779347B CN110779347B CN201910979366.0A CN201910979366A CN110779347B CN 110779347 B CN110779347 B CN 110779347B CN 201910979366 A CN201910979366 A CN 201910979366A CN 110779347 B CN110779347 B CN 110779347B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
- F28B9/06—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid with provision for re-cooling the cooling water or other cooling liquid
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an intelligent control device of a circulating water system and a use method thereof, wherein the intelligent control device comprises a cooling tower, a condenser, a front pool, a controller and a plurality of circulating pumps, the cooling tower is communicated with the condenser and the front pool, and the water pool is communicated with the condenser; the front pool is pressurized by the main circulating pump and/or the standby circulating pump so as to be communicated with the condenser; communicating pipes between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine, and are respectively used for returning water of the auxiliary machine and water coming from the temporary machine; the cooling tower is communicated with the auxiliary machine and the temporary machine and is respectively used for temporary machine backwater and auxiliary machine water supply; the controller is connected with a plurality of circulating pumps. The intelligent switching auxiliary pump can be used for intelligently switching the auxiliary pump, so that the problem that accidents easily occur in a circulating water system in winter or under special conditions is solved.
Description
Technical Field
The invention relates to the field of circulating water of power plants, in particular to an intelligent control device and method for a circulating water system.
Background
The prior part of heating units of the thermal power plant needs smaller original circulating water quantity. Some units have a temporary machine for supplying part of circulating water, and the circulating pump of the unit has a power failure state, and the water tank of the cold water tower and the front tank are empty for freezing prevention. And under the condition that no temporary circulating water supply is adopted, a bypass circulating pump is additionally arranged on some units, so that the station service electricity is saved and the normal circulating water pressure is maintained.
The inventor considers that when the temporary machine is adopted for supplying circulating water, if the temporary machine fails and the two circulating pumps cannot normally operate, the machine set is forced to stop, and the safety of the machine set is reduced. Because the winter heating unit bears important civil tasks, and one heating main power unit is stopped on the basis of stopping one unit, the heating capacity is greatly reduced, and the civil life cannot be guaranteed; when the bypass circulation pump is used independently for supplying, the circulating water is wasted, and the power consumption of the factory is wasted.
Disclosure of Invention
Aiming at the defect that the existing power plant circulating water is insufficient in consideration of special conditions in winter so as to cause the occurrence of circulating water accidents easily in winter, the invention aims to provide an intelligent control device and method for a circulating water system, which use an auxiliary pump and can intelligently switch the use of the auxiliary pump, thereby solving the problem that the circulating water system is easy to cause accidents in winter or under special conditions.
The first object of the invention is to provide an intelligent control device for a circulating water system.
The second object of the invention is to provide an intelligent control method for a circulating water system.
In order to achieve the above purpose, the present invention discloses the following technical solutions:
the invention discloses an intelligent control device of a circulating water system, which comprises a cooling tower, a condenser, a front pool, a controller and a plurality of circulating pumps, wherein the cooling tower is communicated with the condenser and the front pool, and the front pool is communicated with the condenser;
the plurality of circulating pumps comprise a first circulating pump, a second circulating pump and an auxiliary circulating pump which are mutually connected in parallel; communicating pipes between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine, and are respectively used for returning water of the auxiliary machine and water coming from the temporary machine;
the cooling tower is communicated with the auxiliary machine and the temporary machine and is respectively used for temporary machine backwater and auxiliary machine water supply;
the controller is connected with a plurality of circulating pumps;
the cooling tower is communicated with the temporary machine and the auxiliary machine through a circulating pipeline;
the auxiliary circulating pump is a third circulating pump;
the control method of the intelligent control device of the circulating water system comprises the following steps: when the unit operates under the pure condensation condition, circulating water enters a first circulating pump or a second circulating pump from a forehearth, and is boosted to a condenser; the circulating water enters a cooling tower of the machine after the exhaust steam is cooled by a condenser;
at the moment, if the temperature of the circulating water is low, part of the circulating water directly enters the forehearth, so that the heat dissipation capacity is reduced, and the normal circulating water temperature is maintained;
part of the circulating water provides auxiliary machine water, and backwater of the auxiliary machine enters a water tank of a cooling tower of the machine;
when the unit operates under the heating condition in winter, the temporary circulating water provides auxiliary machine water; the auxiliary machine returns water to a front pool of the temporary machine;
under the condition that the first circulating pump and the second circulating pump cannot be used, the third circulating pump supplies water independently, and circulating water enters the third circulating pump from the forehearth and is boosted to provide auxiliary water;
the return water of the auxiliary machine enters a water tank of a cold water tower of the auxiliary machine;
when the unit normally operates under the heating condition in winter, the temporary circulating water provides auxiliary water; the auxiliary machine returns water to a front pool of the temporary machine; the third circulating pump is in a linkage standby state, and low water pressure protection is started; the third circulating pump and the forehearth are kept in a circulating state, and the third circulating pump and the condenser are kept in a closed state; the water tank of the cooling tower of the machine is filled with water;
when the temporary circulation pumps are all failed and cannot provide auxiliary water, the circulating water low-pressure signal alarms, the third circulation pump receives a starting signal to start in an interlocking way, and the third circulation pump and the condenser are switched into a circulation state to stop temporary water; the circulating water enters a third circulating pump from the forehearth, and auxiliary water is provided after the circulating water is boosted; and the return water of the auxiliary machine enters a water tank of the cold water tower of the machine.
Further, the auxiliary circulating pump is provided in plurality.
Further, the flow rate of the first circulation pump is greater than the flow rate of the second circulation pump. Further, the first circulating pump, the second circulating pump and the third circulating pump are communicated with the front pool and the condenser through circulating pipelines, electric valves are arranged on the front side and the rear side of the first circulating pump and the second circulating pump, and an electric valve is arranged on the rear side of the third circulating pump; the front side and the rear side of the third circulating pump are also respectively provided with a manual valve and a check valve.
Further, the circulation pipe is provided with a plurality of valves.
Compared with the prior art, the invention has the following beneficial effects:
1) In the device disclosed by the invention, the auxiliary circulating pump is used for treating special situations that the auxiliary circulating pump cannot be used in winter or other main circulating pumps, so that the problem that the circulating water system cannot be used under the condition that the main circulating pump cannot be used is avoided.
2) In the device disclosed by the invention, the valve capable of safely operating the auxiliary circulating pump is adopted for the auxiliary circulating pump, so that the auxiliary circulating pump is ensured not to interfere with the main circulating pump in the normal use process, and the stable operation of the system is ensured.
3) Compared with the independent temporary water supply, the auxiliary circulating pump can be started in a linkage way, the safety of the unit is improved by the linkage starting of the auxiliary circulating pump, and the probability of forced shutdown of the unit caused by the failure of the temporary circulating water system is greatly reduced; meanwhile, the invention also keeps manual starting so as to facilitate the treatment of emergency.
4) Compared with the independent water supply by adopting the bypass circulating pump, the control method and the control device of the invention combine the temporary water supply, and the linkage intelligent control of the auxiliary circulating pump not only improves the safety of the unit, but also reduces the power utilization rate of the plant and improves the economic benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a schematic structural diagram of embodiment 1.
In the figure, 100, a forehearth, 200, a condenser, 300, a cold water tower, 1, a first valve, 2, a second valve, 3, a third valve, 4, a fourth valve, 5, a fifth valve, 6, a sixth valve, 7, a seventh valve, 8, an eighth valve, 9, a ninth valve, 10, a tenth valve, 11, an eleventh valve, 12, a twelfth valve, 13, a thirteenth valve, 14, a fourteenth valve, 21, a first pipeline, 22, a second pipeline, 23, a third pipeline, 24, a fourth pipeline, 25, a fifth pipeline, 26, a sixth pipeline, 27, a seventh pipeline, 28, and an eighth pipeline.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, the present invention aims to provide an intelligent control device and method for a circulating water system, which uses an auxiliary pump and can intelligently switch the use of the auxiliary pump, so as to solve the problem that the circulating water system is easy to have accidents in winter or under special conditions, and the present invention is further described with reference to the accompanying drawings and the specific embodiments.
Example 1
An intelligent control device of a circulating water system comprises a cooling tower 300, a condenser 200, a front pool 100, a controller and a plurality of circulating pumps, wherein the cooling tower 300 is communicated with the condenser 200 and the front pool 100, and the front pool is communicated with the condenser 200;
the plurality of circulating pumps comprise a first circulating pump, a second circulating pump and a third circulating pump, the first circulating pump, the second circulating pump and the third circulating pump are all communicated with the front tank 100 and the condenser 200, and the front side and the rear side of the third circulating pump are both provided with valves and check valves;
the controller is connected with a plurality of circulating pumps.
Specifically, please refer to fig. 1, in the intelligent control device of the circulating water system in this embodiment, the cooling tower 300, the condenser 200 and the forehearth 100 are communicated through circulating pipelines, the components of the circulating pipelines include a first pipeline 21 provided with a first circulating pump, a second pipeline 22 provided with a second circulating pump, and a third pipeline 23 provided with a third circulating pump, and the fourth circulating pipeline is jointly communicated with the first circulating pipeline, the second circulating pipeline and the third circulating pipeline, and is also communicated with a temporary water supply pipeline for temporary water supply and an auxiliary water return pipeline for auxiliary water return, and the auxiliary in this embodiment includes an air cooler, an oil cooler, open water, a water injection tank, water supplementing and the like; the condenser 200 is communicated with the cooling tower 300 through a fifth pipeline 25.
The cooling water tower 300 is provided with a cooling water tank, the cooling water tank is communicated with a sixth circulating pipeline and a seventh circulating pipeline, the sixth circulating pipeline and the seventh circulating pipeline are respectively communicated with an on-machine water return pipeline and an auxiliary machine water inlet pipeline, and the on-machine water return pipeline and the auxiliary machine water inlet pipeline are respectively communicated with an on-machine and an auxiliary machine.
Wherein, the front side and the rear side of the first circulating pump of the first pipeline 21 are respectively provided with a first valve 1 and a second valve 2, the front side and the rear side of the second circulating pump of the second pipeline 22 are respectively provided with a third valve 3 and a fourth valve 4, the front side of the third circulating pump of the third pipeline 23 is provided with a fifth valve 5, the rear side is provided with a seventh valve 7 and a sixth check valve, the temporary water pipeline is provided with an eighth valve 8, and the rear side of the junction of the auxiliary machine water return pipeline and the fourth pipeline 24 is provided with a ninth valve 9;
the fifth pipe 25 is provided with a thirteenth valve 13;
the sixth pipe 26 and the seventh pipe 27 are connected, so that the eleventh valve 11 and the twelfth valve 12 are respectively installed in the sixth pipe 26 on both sides of the connection of the sixth pipe 26 and the seventh pipe 27, the fourteenth valve 14 is installed in the seventh pipe 27 on the rear side of the connection of the seventh pipe 27 and the sixth pipe 26, the sixth pipe 26 is also connected with the fifth pipe 25, the twelfth valve 12 is installed in the sixth pipe 26 section between the seventh pipe 27 and the fifth pipe 25, and the thirteenth valve 13 is also installed in the pipe of the fifth pipe 25 section before entering the cold water tank.
The cooling tower 300 is connected to the foretank 100 via the eighth pipe 28.
It can be understood that the first circulating pump is a main flow pump which bears most of circulating water flow, the second circulating pump is an auxiliary flow pump which bears less flow than the first circulating pump, the third circulating pump is a bypass circulating pump, and the bypass circulating pump is in a standby state in a heating period; the bypass circulating pump can intelligently control the emergency interlocking start during the heating period and the low water pressure action; the bypass circulation pump can be started and stopped manually during the heating period.
The first, second, third, fourth, seventh, ninth, tenth and fourteen valves are electric valves, the fifth, eighth, eleventh, twelfth and thirteenth valves are manual valves, and the sixth valve 6 is a check valve.
Example 2
Embodiment 2 discloses an intelligent control method for a circulating water system, which is based on the intelligent control device for the circulating water system described in embodiment 1, and comprises the following operation methods according to different specific environments:
(1) The unit operates in a pure coagulation condition:
circulating water enters a first circulating pump or a second circulating pump from the forehearth 100 through a first valve 1 or a third valve 3, and enters a fourth pipeline through a second valve 2 or a fourth valve 4 after being boosted to reach the condenser 200;
after the exhaust steam is cooled by the condenser 200, the circulating water enters a cooling tower of the machine through a fifth pipeline and a tenth valve 10; at this time, if the circulating water temperature is low, the fourteenth valve 14 may be properly opened, and a part of the circulating water directly enters the foretank 100 through the eighth pipe, reducing the heat dissipation capacity, thereby maintaining the normal circulating water temperature.
And part of circulating water is supplied with auxiliary machine water through an auxiliary machine water return pipeline, and the return water of the auxiliary machine passes through an auxiliary machine water inlet pipeline and enters a water pool of a cooling water tower of the machine through a thirteenth valve 13.
(2) The first operating mode of the unit under winter heating conditions:
the temporary circulating water enters an auxiliary machine water return pipeline through a temporary incoming water pipeline by virtue of a fourth pipeline to provide auxiliary machine water; backwater is returned to the front pool 100 of the temporary machine through a temporary machine backwater pipeline;
under the condition that the first circulating pump and the second circulating pump cannot be used, if the third circulating pump supplies water independently, circulating water enters the third circulating pump from the forehearth 100 through the fifth valve 5, and enters an auxiliary machine water return pipeline through the fourth pipeline through the sixth valve 6 and the seventh valve 7 after being boosted to provide auxiliary machine water;
the backwater passes through the water inlet pipeline of the auxiliary machine and enters the water tower pool through the thirteenth valve 13.
(3) A second mode of operation of the unit in winter heating conditions;
during normal operation, the temporary circulating water enters the auxiliary machine water return pipeline through the temporary water pipeline and enters the auxiliary machine water return pipeline through the fourth pipeline to provide auxiliary machine water; backwater passes through the temporary incoming water pipeline to the temporary forebay 100; the third circulating pump is in a linkage standby state, and low water pressure protection is started; the fifth valve 5 is kept open, and the seventh valve 7 is kept in an interlocked closed state; the water tank of the water tower of the machine is filled with water.
When the temporary circulation pump fails and can not provide auxiliary water, the circulating water pressure is low, the signal is alarmed, the third circulation pump receives the starting signal of the controller to start in an interlocking way, the seventh valve 7 is started in an interlocking way, and the eighth valve 8 is closed immediately; the circulating water enters a third circulating pump from the forehearth 100 through a fifth valve 5, is boosted and then enters an auxiliary machine water return pipeline through a fourth pipeline through a sixth valve 6 and a seventh valve 7, so as to provide auxiliary machine water; the backwater enters the water tank of the water tower through the thirteenth valve 13 through the water inlet pipeline of the auxiliary machine.
The third circulating pump can be one or two mutually standby pumps.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The intelligent control device of the circulating water system is characterized by comprising a cooling tower, a condenser, a front pool, a controller and a plurality of circulating pumps, wherein the cooling tower is communicated with the condenser and the front pool, and the front pool is communicated with the condenser;
the plurality of circulating pumps comprise a first circulating pump, a second circulating pump and an auxiliary circulating pump which are mutually connected in parallel; communicating pipes between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine, and are respectively used for returning water of the auxiliary machine and water coming from the temporary machine;
the cooling tower is communicated with the auxiliary machine and the temporary machine and is respectively used for temporary machine backwater and auxiliary machine water supply;
the controller is connected with a plurality of circulating pumps;
the cooling tower is communicated with the temporary machine and the auxiliary machine through a circulating pipeline;
the auxiliary circulating pump is a third circulating pump;
the control method of the intelligent control device of the circulating water system comprises the following steps: when the unit operates under the pure condensation condition, circulating water enters a first circulating pump or a second circulating pump from a forehearth, and is boosted to a condenser; the circulating water enters a cooling tower of the machine after the exhaust steam is cooled by a condenser;
at the moment, if the temperature of the circulating water is low, part of the circulating water directly enters the forehearth, so that the heat dissipation capacity is reduced, and the normal circulating water temperature is maintained;
part of the circulating water provides auxiliary machine water, and backwater of the auxiliary machine enters a water tank of a cooling tower of the machine;
when the unit operates under the heating condition in winter, the temporary circulating water provides auxiliary machine water; the auxiliary machine returns water to a front pool of the temporary machine;
under the condition that the first circulating pump and the second circulating pump cannot be used, the third circulating pump supplies water independently, and circulating water enters the third circulating pump from the forehearth and is boosted to provide auxiliary water;
the return water of the auxiliary machine enters a water tank of a cold water tower of the auxiliary machine;
when the unit normally operates under the heating condition in winter, the temporary circulating water provides auxiliary water; the auxiliary machine returns water to a front pool of the temporary machine; the third circulating pump is in a linkage standby state, and low water pressure protection is started; the third circulating pump and the forehearth are kept in a circulating state, and the third circulating pump and the condenser are kept in a closed state; the water tank of the cooling tower of the machine is filled with water;
when the temporary circulation pumps are all failed and cannot provide auxiliary water, the circulating water low-pressure signal alarms, the third circulation pump receives a starting signal to start in an interlocking way, and the third circulation pump and the condenser are switched into a circulation state to stop temporary water; the circulating water enters a third circulating pump from the forehearth, and auxiliary water is provided after the circulating water is boosted; and the return water of the auxiliary machine enters a water tank of the cold water tower of the machine.
2. The intelligent control device for a circulating water system according to claim 1, wherein a plurality of auxiliary circulating pumps are provided.
3. The intelligent control device for a circulating water system of claim 1, wherein the flow rate of the first circulating pump is greater than the flow rate of the second circulating pump.
4. The intelligent control device for the circulating water system according to claim 3, wherein the first circulating pump, the second circulating pump and the third circulating pump are communicated with the front tank and the condenser through circulating pipelines, electric valves are arranged on the front side and the rear side of the first circulating pump and the second circulating pump, and an electric valve is arranged on the rear side of the third circulating pump; the front side and the rear side of the third circulating pump are also respectively provided with a manual valve and a check valve.
5. The intelligent control device for a circulating water system as claimed in claim 1, wherein the circulating pipe is provided with a plurality of valves.
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| CN201910979366.0A CN110779347B (en) | 2019-10-15 | 2019-10-15 | Intelligent control device for circulating water system and application method |
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| CN201910979366.0A CN110779347B (en) | 2019-10-15 | 2019-10-15 | Intelligent control device for circulating water system and application method |
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| CN110779347B true CN110779347B (en) | 2023-10-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034221A (en) * | 2012-12-28 | 2013-04-10 | 北京华景天润科技有限公司 | Thermal power plant circulating water system |
| CN203036618U (en) * | 2013-01-25 | 2013-07-03 | 河北大唐国际张家口热电有限责任公司 | Boiler cooling system with stepped revolving speed circulating pump adopted |
| CN203489728U (en) * | 2013-07-25 | 2014-03-19 | 大唐国际发电股份有限公司北京高井热电厂 | Closed circulating water system of power generation and heat supply unit |
| CN105258106A (en) * | 2015-11-04 | 2016-01-20 | 中国神华能源股份有限公司 | Rapid load reduction system and method for sharing water supply pumps between different unit-system units |
| CN106839803A (en) * | 2017-01-17 | 2017-06-13 | 洛阳中硅高科技有限公司 | Circulation |
-
2019
- 2019-10-15 CN CN201910979366.0A patent/CN110779347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103034221A (en) * | 2012-12-28 | 2013-04-10 | 北京华景天润科技有限公司 | Thermal power plant circulating water system |
| CN203036618U (en) * | 2013-01-25 | 2013-07-03 | 河北大唐国际张家口热电有限责任公司 | Boiler cooling system with stepped revolving speed circulating pump adopted |
| CN203489728U (en) * | 2013-07-25 | 2014-03-19 | 大唐国际发电股份有限公司北京高井热电厂 | Closed circulating water system of power generation and heat supply unit |
| CN105258106A (en) * | 2015-11-04 | 2016-01-20 | 中国神华能源股份有限公司 | Rapid load reduction system and method for sharing water supply pumps between different unit-system units |
| CN106839803A (en) * | 2017-01-17 | 2017-06-13 | 洛阳中硅高科技有限公司 | Circulation |
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| CN110779347A (en) | 2020-02-11 |
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