CN110779347A - Intelligent control device for circulating water system and use method - Google Patents
Intelligent control device for circulating water system and use method Download PDFInfo
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- CN110779347A CN110779347A CN201910979366.0A CN201910979366A CN110779347A CN 110779347 A CN110779347 A CN 110779347A CN 201910979366 A CN201910979366 A CN 201910979366A CN 110779347 A CN110779347 A CN 110779347A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 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
- 238000010586 diagram Methods 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
- 230000008569 process Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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 using method thereof, wherein the intelligent control device comprises a cooling tower, a condenser, a forebay, a controller and a plurality of circulating pumps, wherein the cooling tower is communicated with the condenser and the forebay, and a water pool is communicated with the condenser; the plurality of circulating pumps comprise a main circulating pump and a standby circulating pump, and the forebay is pressurized by the main circulating pump and/or the standby circulating pump so as to be communicated with the condenser; the communication pipelines between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine and are respectively used for the return water of the auxiliary machine and the incoming water of the temporary machine; the cooling tower is communicated with an auxiliary machine and a machine in front and is respectively used for machine in front return water and auxiliary machine incoming water; the controller is connected with a plurality of circulating pumps. The invention can intelligently switch the use of the auxiliary pump, thereby solving the problem that the circulating water system is easy to have accidents in winter or under special conditions.
Description
Technical Field
The invention relates to the field of circulating water of a power plant, in particular to an intelligent control device and method for a circulating water system.
Background
The existing heat supply unit of the thermal power plant needs smaller circulating water. Some units have temporary machines to supply part of circulating water, the circulating pump of the unit is in a power failure state, and the water in the cooling tower pool and the emptying water in the front pool are prevented from freezing. Some units adopt an additional bypass circulating pump under the condition that circulating water is not supplied by a temporary unit, so that the power plant power is saved and the normal circulating water pressure is maintained.
The inventor thinks that when the machine-side circulating water supply is adopted, if the machine-side fault causes that two circulating pumps can not normally operate, the unit can be forced to stop, and the safety of the unit is reduced. Because the heating unit bears an important civil task in winter, the heating capacity is greatly reduced and the civil life cannot be guaranteed when the heating main unit is stopped on the basis of stopping one unit; and when the bypass circulating pump is independently used for supplying, the situations of waste of circulating water and waste of auxiliary power exist.
Disclosure of Invention
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, so that the problem that the circulating water system is easy to have accidents in winter or under special conditions is solved.
The invention aims to provide an intelligent control device for a circulating water system.
The second purpose of the invention is to provide an intelligent control method for a circulating water system.
In order to realize the purpose, the invention discloses the following technical scheme:
the invention discloses an intelligent control device of a circulating water system, which comprises a cooling tower, a condenser, a forebay, a controller and a plurality of circulating pumps, wherein the cooling tower is communicated with the condenser and the forebay, and the water bay is communicated with the condenser;
the plurality of circulating pumps comprise a main circulating pump and a standby circulating pump, and the forebay is pressurized by the main circulating pump and/or the standby circulating pump so as to be communicated with the condenser; the communication pipelines between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine and are respectively used for the return water of the auxiliary machine and the incoming water of the temporary machine;
the cooling tower is communicated with an auxiliary machine and a machine in front and is respectively used for machine in front return water and auxiliary machine incoming water;
the controller is connected with a plurality of circulating pumps.
Further, the auxiliary circulating pump is provided in plurality.
Further, the main circulating pump comprises a first circulating pump and a second circulating pump, and the flow rate of the first circulating pump is greater than that of the second circulating pump; the auxiliary circulating pump is a third circulating 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 sides and the rear sides 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; and a manual valve and a check valve are respectively arranged on the front side and the rear side of the third circulating pump.
Further, the cooling tower is communicated with the temporary machine and the auxiliary machine through a circulating pipeline.
Furthermore, circulation pipelines between the plurality of circulation pumps and the condenser are communicated with an auxiliary machine and a temporary machine.
Further, the circulation pipe is provided with a plurality of valves.
The invention discloses an intelligent control method of a circulating water pump system, when a unit operates in a pure condensing state, circulating water enters a first circulating pump or a second circulating pump from a front pool, and is pressurized to a condenser; circulating water enters a cooling tower of the machine after dead steam is cooled by a condenser;
if the temperature of the circulating water is low, part of the circulating water directly enters the forebay, and the heat dissipation capacity is reduced, so that the normal temperature of the circulating water is maintained;
one part of the circulating water provides water for the auxiliary machine, and the return water of the auxiliary machine enters a water pool of a cooling tower of the machine.
When the unit operates under the heating condition in winter, the on-line circulating water provides water for the auxiliary machine; the return water flows to a forebay of the machine;
under the condition that the first circulating pump and the second circulating pump cannot be used, the third circulating pump independently supplies water, circulating water enters the third circulating pump from the front pool, and auxiliary machine water is provided after pressure boosting;
returning water to enter a water tower pool.
Or when the unit normally operates under the heating condition in winter, the water for the auxiliary machine is circulated in the machine; the return water flows to a forebay of the machine; the third circulating pump is in a chain standby state, and water pressure low protection is started; a circulation state is kept between the third circulating pump and the front pool, and a closing state is kept between the third circulating pump and the condenser; the water tank of the cooling tower of the machine is filled with water.
When the on-line circulating pumps all have faults and cannot provide auxiliary water, a circulating water low-pressure signal gives an alarm, the third circulating pump receives a starting signal to start in an interlocking manner, the third circulating pump and the condenser are switched to a circulation state, and the on-line water supply is stopped; circulating water enters a third circulating pump from the front pool, and is boosted to provide auxiliary machine water; returning water to enter a water tower pool.
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 the special condition that the main circulating pump cannot be used in winter or other special conditions that the main circulating pump cannot be used, so that the problem that the circulating water system cannot be used under the condition that the main circulating pump cannot be used is solved.
2) In the device disclosed by the invention, the auxiliary circulating pump is provided with the valve capable of safely operating 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) In the invention, the auxiliary circulating pump can be started in a linkage manner, compared with the independent adoption of on-line water supply, the linkage starting of the auxiliary circulating pump improves the safety of the unit, and the forced shutdown probability of the machine caused by the fault of a circulating water system occurring on-line is greatly reduced; meanwhile, the invention also reserves manual starting so as to facilitate the handling of emergency situations.
4) Compared with the method that the bypass circulating pump is adopted for supplying water independently, the control method and the device are combined with the machine-approaching water supply, and the linkage intelligent control of the auxiliary circulating pump not only improves the safety of the unit, but also reduces the plant power consumption rate and improves the economic benefit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of embodiment 1.
In the figure, 100, a forebay, 200, a condenser, 300, a cooling 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 is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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 invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background art, aiming at the problem that the circulating water accident is easily caused in winter due to the insufficient consideration of the existing circulating water of the power plant to the special condition in winter, the invention aims to provide the intelligent control device and the method for the circulating water system, which use the auxiliary pump and can intelligently switch the use of the auxiliary pump, so as to solve the problem that the accident is easily caused in winter or the special condition of the circulating water system, and the invention is further described by combining the attached drawings and the specific implementation mode.
Example 1
An intelligent control device of a circulating water system comprises a cooling tower 300, a condenser 200, a forebay 100, a controller and a plurality of circulating pumps, wherein the cooling tower 300 is communicated with the condenser 200 and the forebay 100, and a water bay 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 pool 100 and the condenser 200, and valves and check valves are installed on the front side and the rear side of the third circulating pump;
the controller is connected with a plurality of circulating pumps.
Specifically, referring to fig. 1, the intelligent control device for a circulating water system in the embodiment is connected to the cooling tower 300, the condenser 200 and the forebay 100 through a circulating pipeline, the circulating pipeline includes a first pipeline 21 provided with a first circulating pump, a second pipeline 22 provided with a second circulating pump, a third pipeline 23 provided with a third circulating pump, and a fourth circulating pipeline jointly connected to the first circulating pipeline, the second circulating pipeline and the third circulating pipeline, the fourth circulating pipeline is further connected to a machine-approaching water pipeline for machine-approaching water and an auxiliary machine water return pipeline for auxiliary machine water return, and the auxiliary machine in the embodiment includes an air cooler, an oil cooler, open water, a water injection tank, water supplement 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 a machine-approaching return water pipeline and an auxiliary machine incoming water pipeline, and the machine-approaching return water pipeline and the auxiliary machine incoming water pipeline are respectively communicated with a machine-approaching machine and an auxiliary machine.
The system comprises a first pipeline 21, a second pipeline 23, an auxiliary water return pipeline 24, a third pipeline 23, a fifth pipeline 8, a ninth pipeline 9, a fourth pipeline 24, a fourth pipeline 3, a fourth pipeline 4, a fifth valve 5, a seventh valve 7, a sixth check valve, a fifth valve 8, a sixth valve 3, a fifth valve 2, a sixth valve 3, a fifth valve 4, a sixth valve 7, a fifth valve 7, a sixth check valve, a fifth valve 8, a sixth valve 9 and a sixth valve 3, wherein the first valve 1 and the second valve 2 are respectively installed on the front side and the rear side of a first circulating pump of the first pipeline 21;
the fifth pipe 25 is provided with a tenth valve 10;
the sixth pipeline 26 and the seventh pipeline 27 are communicated, so that the eleventh valve 11 and the twelfth valve 12 are respectively installed on the sixth pipeline 26 at two sides of the joint of the sixth pipeline 26 and the seventh pipeline 27, the thirteenth valve 13 is installed on the seventh pipeline 27 at the rear side of the joint of the seventh pipeline 27 and the sixth pipeline 26, meanwhile, the sixth pipeline 26 is also communicated with the fifth pipeline 25, the twelfth valve 12 is installed on the sixth pipeline 26 section between the seventh pipeline 27 and the fifth pipeline 25, and the fourteenth valve 14 is also installed on the pipeline of the sixth pipeline 26 section before entering the cold water pool.
It should be noted that the water cooling tower 300 is connected to the front pool 100 through 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 which is in a standby state in a heating period; the bypass circulating pump can intelligently control the emergency interlocking start in the heating period and the low water pressure action; the bypass circulation pump may be manually activated and deactivated during the heating period.
It should be noted that the first, second, third, fourth, seventh, ninth, tenth, and fourteenth 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
(1) the unit operates under the pure condition:
circulating water enters the first circulating pump or the second circulating pump from the forebay 100 through the first valve 1 or the third valve 3, and enters the fourth pipeline through the second valve 2 or the fourth valve 4 after being boosted to reach the condenser 200;
circulating water is cooled by the dead steam in the condenser 200 and then enters a cooling tower of the condenser through a fifth pipeline and a tenth valve 10; at this time, if the temperature of the circulating water is low, the fourteenth valve 14 can be properly opened, and a part of the circulating water directly enters the forebay 100 through the eighth pipeline, so as to reduce the heat dissipation amount, thereby maintaining the normal temperature of the circulating water.
Part of the circulating water is supplied to the 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 tower of the machine through a thirteenth valve 13.
(2) The first operation mode of the unit under the heating condition in winter:
the machine-approaching circulating water enters an auxiliary machine water return pipeline through a machine-approaching water inlet pipeline by virtue of a fourth pipeline to provide auxiliary machine water; the backwater passes through a machine-approaching backwater pipeline to reach a machine-approaching forebay 100;
under the condition that the first circulating pump and the second circulating pump cannot be used, if the third circulating pump independently supplies water, circulating water enters the third circulating pump from the front pool 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 enters the water tower pool through an auxiliary engine water inlet pipeline and a thirteenth valve 13.
(3) A second mode of operation of the unit in winter heating conditions;
when the system normally operates, the on-line circulating water enters an auxiliary machine water return pipeline through a pipeline on-line incoming water pipeline by means of a fourth pipeline to provide auxiliary machine water; the backwater passes through a machine-approaching water pipeline to a machine-approaching forebay 100; the third circulating pump is in a chain standby state, and water pressure low protection is started; the fifth valve 5 is kept open, and the seventh valve 7 is kept in an interlocked closed state; the water tower and the water tank are filled with water.
When the machine-approaching circulating pumps all have faults and cannot provide water for the auxiliary machine, the circulating water pressure is low, a signal alarm is given, the third circulating pump receives a starting signal of the controller to start in an interlocking manner, the seventh valve 7 is started in an interlocking manner and opened, and the eighth valve 8 is immediately closed; circulating water enters a third circulating pump from the front pool 100 through a fifth valve 5, and enters an auxiliary machine water return pipeline through a fourth pipeline through a sixth valve 6 and a seventh valve 7 after being boosted to provide auxiliary machine water; the return water enters the water tower pool through the auxiliary machine water inlet pipeline and the thirteenth valve 13.
The third circulating pump can be one or two mutually standby circulating pumps.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intelligent control device of a circulating water system is characterized by comprising a cooling tower, a condenser, a forebay, a controller and a plurality of circulating pumps, wherein the cooling tower is communicated with the condenser and the forebay, and the water bay is communicated with the condenser;
the plurality of circulating pumps comprise a main circulating pump and a standby circulating pump, and the forebay is pressurized by the main circulating pump and/or the standby circulating pump so as to be communicated with the condenser; the communication pipelines between the circulating pumps and the condenser are simultaneously communicated with the auxiliary machine and the temporary machine and are respectively used for the return water of the auxiliary machine and the incoming water of the temporary machine;
the cooling tower is communicated with an auxiliary machine and a machine in front and is respectively used for machine in front return water and auxiliary machine incoming water;
the controller is connected with a plurality of circulating pumps.
2. The intelligent control device for the circulating water system as claimed in claim 1, wherein a plurality of auxiliary circulating pumps are provided.
3. The intelligent control device for the circulating water system as claimed in claim 1, wherein the main circulating pump comprises a first circulating pump and a second circulating pump, and the flow rate of the first circulating pump is greater than that of the second circulating pump; the auxiliary circulating pump is a third circulating pump.
4. The intelligent control device for the circulating water system as claimed in claim 3, wherein the first circulating pump, the second circulating pump and the third circulating pump are communicated with the front pool and the condenser through circulating pipes, electric valves are installed on the front sides and the rear sides of the first circulating pump and the second circulating pump, and an electric valve is installed on the rear side of the third circulating pump; and a manual valve and a check valve are respectively arranged on the front side and the rear side of the third circulating pump.
5. The intelligent control device for the circulating water system as claimed in claim 1, wherein the cooling tower is communicated with the temporary machine and the auxiliary machine through a circulating pipeline.
6. The intelligent control device for the circulating water system as claimed in claim 1, wherein the circulating pipelines between the plurality of circulating pumps and the condenser are communicated with an auxiliary machine and a temporary machine.
7. The intelligent control device for the circulating water system as claimed in claim 5 or 6, wherein the circulating pipeline is provided with a plurality of valves.
8. The intelligent control method for the circulating water pump system according to any one of claims 1 to 7, wherein when the unit is operated under a pure condensing condition, circulating water enters the first circulating pump or the second circulating pump from the front pool, and is subjected to pressure boosting and then enters the condenser; circulating water enters a cooling tower of the machine after dead steam is cooled by a condenser;
if the temperature of the circulating water is low, part of the circulating water directly enters the forebay, and the heat dissipation capacity is reduced, so that the normal temperature of the circulating water is maintained;
one part of the circulating water provides water for the auxiliary machine, and the return water of the auxiliary machine enters a water pool of a cooling tower of the machine.
9. The intelligent control method for the circulating water pump system according to claim 8, wherein when the unit is operated in the winter heating condition, the on-line circulating water supplies auxiliary water; the return water flows to a forebay of the machine;
under the condition that the first circulating pump and the second circulating pump cannot be used, the third circulating pump independently supplies water, circulating water enters the third circulating pump from the front pool, and auxiliary machine water is provided after pressure boosting;
returning water to enter a water tower pool.
10. The intelligent control method for the circulating water pump system according to claim 8, wherein when the unit is normally operated under the heating condition in winter, the auxiliary machine is circulated with water on the machine; the return water flows to a forebay of the machine; the third circulating pump is in a chain standby state, and water pressure low protection is started; a circulation state is kept between the third circulating pump and the front pool, and a closing state is kept between the third circulating pump and the condenser; the water tank of the cooling tower of the machine is filled with water.
When the on-line circulating pumps all have faults and cannot provide auxiliary water, a circulating water low-pressure signal gives an alarm, the third circulating pump receives a starting signal to start in an interlocking manner, the third circulating pump and the condenser are switched to a circulation state, and the on-line water supply is stopped; circulating water enters a third circulating pump from the front pool, and is boosted to provide auxiliary machine water; returning water to enter a water tower pool.
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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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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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