CN111058908A - Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit - Google Patents
Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit Download PDFInfo
- Publication number
- CN111058908A CN111058908A CN201911376699.0A CN201911376699A CN111058908A CN 111058908 A CN111058908 A CN 111058908A CN 201911376699 A CN201911376699 A CN 201911376699A CN 111058908 A CN111058908 A CN 111058908A
- Authority
- CN
- China
- Prior art keywords
- valve group
- steam
- pressure cylinder
- low
- air cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- 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
- 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
- F01D25/30—Exhaust heads, chambers, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/005—Auxiliary systems, arrangements, or devices for protection against freezing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Abstract
The utility model provides a direct air cooling unit low pressure cylinder zero power operating system and operation method, operating system include steam turbine, steam extraction device and heat supply first station, the steam output pipeline of the high pressure cylinder of steam turbine or intermediate pressure cylinder connects the heat supply first station respectively and the low pressure cylinder of steam turbine, and the steam extraction device is connected to the output of the low pressure cylinder of steam turbine, still includes that series connection's first valve group and first temperature and pressure reducer form first branch road, and the steam output pipeline of the high pressure cylinder of steam turbine or intermediate pressure cylinder is connected to the input of low pressure cylinder through parallel connection's third valve group and first branch road. Improve the steam pipeline of unit through setting up a plurality of valve groups and temperature and pressure reducers, through the steam flow that temperature and pressure reducers control entering low pressure cylinder and air cooling island, avoided the flow direction of direct switch steam among the traditional system, can realize the unit through the switching of control valve group and take out congeals back of the body operation mode nimble switching on line, improved the flexibility of unit operation.
Description
Technical Field
The disclosure relates to the technical field of generator sets, in particular to a low-pressure cylinder zero-power operation system and an operation method of a direct air cooling unit.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Along with the increase of the treatment intensity of the country on the environmental pollution, the elimination of the units with the backward capacity and the units which do not meet the requirements of related mandatory standards is accelerated, and the elimination of the conventional coal-fired thermal power units with the design service life expiration below the single-machine capacity of 300MW grade and without heat supply reconstruction is accelerated. In order to meet the national requirements of energy conservation and emission reduction, the index competitiveness of a power plant and the flexibility of unit operation are increased, and extraction condensing back heating transformation is carried out on an extraction condensing turbine generator set. After transformation, zero-power operation of the low-pressure cylinder is realized, the heat supply capacity is greatly increased, the coal consumption of power generation is reduced, and the national policy requirements are met.
The extraction steam turbine is a steam turbine which extracts a part of steam from the intermediate stage of the steam turbine and supplies the steam to users, namely, the steam turbine which generates electricity and supplies heat at the same time consists of a high-intermediate pressure cylinder and a low-intermediate pressure cylinder. The new steam enters a high and medium pressure cylinder to do work, and is divided into two streams after being expanded to a certain pressure, one stream is extracted to supply heat users, the other stream enters a low-pressure part to continue to expand to do work, and finally the steam is discharged into a condenser. In order to realize the transformation from the extraction and condensation unit to the extraction and condensation back pressure unit, simultaneously, the contradiction that the electric load demand is lower in the heat supply period such as winter and the heat supply load demand is larger is considered, and the contradiction that the heat supply and the power generation are not matched in the heat supply period is solved by carrying out zero-power transformation on the low-pressure cylinder.
The inventor finds that, in the zero-power transformation of the direct air cooling unit, if the switching is directly controlled, the output steam of the intermediate pressure cylinder is controlled to the heat supply end, and the following problems exist:
1) air cooling island problem of preventing frostbite: the air cooling island is damaged due to freezing caused by insufficient steam quantity.
2) Cooling problem of shaft seal heater: because the flow of the condensed water is small, the requirement of shaft seal cooling can not be met.
3) Cooling the slag cooler of the boiler: because the drained water of the first station is completely returned to the deaerator, only a small amount of steam condensate enters the slag cooler of the boiler, and the cooling requirement of the slag cooler cannot be met.
4) Low pressure cylinder cooling problem: when the low-pressure cylinder runs at zero power, because the low-pressure cylinder is not absolute vacuum, a large blast condition exists when the low-pressure rotor rotates, and the safety of the unit is influenced due to overhigh temperature of the low-pressure cylinder.
Disclosure of Invention
In order to solve the problems, the low-pressure cylinder zero-power operation system of the direct air cooling unit is provided, and the problems of freezing prevention of an air cooling island, cooling of a shaft seal heater, cooling of a boiler slag cooler and cooling of the low-pressure cylinder are solved through steam pipeline transformation, so that the unit can meet the operation requirements when the low-pressure cylinder zero-power operation system is transformed, and equipment of the unit can be protected. Improve the steam pipeline of unit through setting up a plurality of valve groups and temperature and pressure reducers, through the steam flow that temperature and pressure reducers control entering low pressure cylinder and air cooling island, avoided the flow direction of direct switch steam among the traditional system, can realize the unit through the switching of control valve group and take out congeals back of the body operation mode nimble switching on line, improved the flexibility of unit operation.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
one or more embodiments provide direct air cooling unit low pressure cylinder zero power operating system, including steam turbine, steam extraction device and heat supply first station, the low pressure cylinder of heat supply first station and steam turbine is connected respectively to the steam output pipeline of the high pressure cylinder of steam turbine or intermediate pressure cylinder, and the steam extraction device is connected to the output of the low pressure cylinder of steam turbine, still includes first valve group and the first temperature and pressure reducer formation first branch road of series connection, and the steam output pipeline of the high pressure cylinder of steam turbine or intermediate pressure cylinder is connected to the input of low pressure cylinder through the third valve group and the first branch road of parallel connection.
Further, the temperature and pressure reducing device comprises a main controller and a temperature sensor, wherein the temperature sensor, the first valve group and the first temperature and pressure reducing device are electrically connected with the main controller respectively.
Furthermore, a fourth valve group is arranged on a connecting pipeline of a steam output pipeline of a high-pressure cylinder or a medium-pressure cylinder of the steam turbine and a heat supply initial station, and the fourth valve group is electrically connected with the main controller.
Further, still form the second branch road including second valve group and the second pressure reducer that reduces the temperature of series connection, according to the flow direction of steam, the pipeline of the rear end of fourth valve group passes through the second branch road and is connected to the gas input end of air cooling island, the second pressure reducer reduces the temperature according to the air cooling island demand steam volume and the ambient temperature control transmission of setting to the steam volume of air cooling island, and the second pressure reducer that reduces the temperature is connected with the main control unit electricity.
Furthermore, the drain output end of the heat supply initial station conveys drain back to the boiler of the unit through a drain pipeline, the drain pipeline comprises a sixth valve group and a deaerator which are sequentially connected, and the sixth valve group is electrically connected with the main controller.
Further, the drain pipeline still includes the second drain pipeline with sixth valve group parallel connection, the second drain pipeline includes series connection's fifth valve group and hydrophobic cooler, drainage cooler connects the steam extraction device, is connected to the oxygen-eliminating device through the steam extraction device.
Furthermore, a drainage water pump is further arranged on the drainage pipeline and used for providing power for drainage conveying.
The operation method of the low-pressure cylinder zero-power operation system based on the direct air cooling unit comprises the following steps:
acquiring a unit running state configured by a user; the unit operation state comprises zero power operation, extraction condensing operation and pure condensing operation.
When the operation is zero power, closing the third valve group and the sixth valve group, opening the first valve group, the second valve group, the fourth valve group and the fifth valve group, and simultaneously starting the first temperature and pressure reducer and the second temperature and pressure reducer;
acquiring detected environment temperature data, and acquiring a low-pressure cylinder steam demand set value and an air cooling island steam demand set value of a low-pressure cylinder running at zero power;
and controlling the steam flow entering the low-pressure cylinder according to a steam demand set value of the low-pressure cylinder, and controlling the steam flow entering the air cooling island according to the steam demand set value if the current environment temperature data is less than the set temperature.
Further, when the acquired operation state is pumping and condensing operation, the third valve group, the fourth valve group and the sixth valve group are opened, and the first valve group, the second valve group, the fifth valve group, the first temperature and pressure reducer and the second temperature and pressure reducer are closed.
Further, when the acquired operation state is pure condensation operation, the third valve group is opened, the first valve group, the second valve group, the fourth valve group, the fifth valve group and the sixth valve group are closed, and the first temperature and pressure reducer and the second temperature and pressure reducer are closed.
Compared with the prior art, the beneficial effect of this disclosure is:
(1) this openly bypass first branch road on high-pressure steam's output to low pressure cylinder's input end pipeline, 1, increase the frostproofing steam pipeline of air cooling island, open at low pressure cylinder zero power running state, provide the cooling steam that needs for the low pressure cylinder can cool off safely, improves the life of unit.
(2) This disclosure has improved hydrophobic pipeline, returns the unit exhaust apparatus after hydrophobic cooler cooling by former hydrophobic oxygen-eliminating device bypass for returning the steam trap, when low pressure cylinder zero power running state, will be hydrophobic through the bypass transmission to exhaust apparatus behind the hydrophobic cooler cooling, guarantees the normal cooling operation of bearing seal heater and the cold sediment ware of boiler.
(3) This openly sets up the second branch road between high-pressure steam's output to air cooling island, provides the steam volume that needs for the air cooling island through the second branch road, has avoided in low pressure jar zero power operation, because steam volume reduces makes the air cooling island appear freezing the damage.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure.
Fig. 1 is a schematic system configuration diagram of embodiment 1 of the present disclosure;
wherein: 1. the device comprises a first valve group, a second valve group, a third valve group, a fourth valve group, a fifth valve group, a sixth valve group, a first temperature and pressure reducer, a second temperature and pressure reducer, a first drain pump, a fourth valve group, a fifth valve group, a sixth valve group, a second temperature and pressure reducer, a second drain pump, a fourth valve group, a fifth valve group, a sixth valve group, a fourth valve.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 disclosure 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 example embodiments according to the present disclosure. 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. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
In the technical solution disclosed in one or more embodiments, as shown in fig. 1, a low pressure cylinder zero power operation system of a direct air cooling unit is a system capable of realizing zero power operation of a low pressure cylinder while ensuring safe operation of equipment, and includes a steam turbine, a steam exhaust device and a heat supply primary station, a steam output pipeline of a high pressure cylinder or an intermediate pressure cylinder of the steam turbine is respectively connected with the heat supply primary station and the low pressure cylinder of the steam turbine, an output end of the low pressure cylinder of the steam turbine is connected with the steam exhaust device, and the system further includes a first valve set 1 and a first temperature and pressure reducing device 7 connected in series to form a first branch, and a steam output pipeline of the high pressure cylinder or the intermediate pressure cylinder of the steam turbine is connected to an input end of the low pressure cylinder through a third valve set 3 and the first branch connected.
The third valve group 3 is closed and opened to control whether high-pressure steam enters the low-pressure cylinder or not, and the steam amount entering the low-pressure cylinder can be controlled in the zero-power operation process of the low-pressure cylinder through the first temperature and pressure reducing device 7 set in the first branch, so that most steam is ensured to be led to the first heat supply station, and a small amount of steam is provided for the low-pressure cylinder, and the low-pressure cylinder is cooled.
The control of the valves of this system can be through manual control, also can realize automatic control through setting up each valves into the motorised valve, and is optional, can also include main control unit and temperature sensor, first valve group 1, first temperature and pressure reducer 7 and third valve group 3 are connected with main control unit respectively, main control unit sets for according to the operation of system, switches on and off of control valve group, temperature sensor is used for detecting ambient temperature, with temperature data transmission to main control unit, and main control unit sends temperature signal or control command to first temperature and pressure reducer 7, and first temperature and pressure reducer 7 is according to the throughput of the steam volume of setting for and ambient temperature's big or small control steam.
As a further improvement, a fourth valve group 4 is arranged on a connecting pipeline between a steam output pipeline of a high-pressure cylinder or an intermediate-pressure cylinder of the steam turbine and a heat supply initial station, and the fourth valve group 4 is used for controlling whether heat supply steam is supplied to the heat supply initial station or not.
In some embodiments, the second valve group 2 and the second temperature and pressure reducing device 8 connected in series form a second branch, a pipeline at the rear end of the fourth valve group 4 is connected with a gas input end of the air cooling island through the second branch according to the flow direction of the steam, and the second temperature and pressure reducing device 8 controls the amount of the steam transmitted to the air cooling island according to the set required steam amount of the air cooling island and the set ambient temperature.
Optionally, after the steam temperature was absorbed in the first station of heat supply, steam condenses to the condensate water, and the hydrophobic output of the first station of heat supply carries the boiler of unit back to through hydrophobic pipeline with the drainage, hydrophobic pipeline is including the sixth valve group 6 and the oxygen-eliminating device that connect gradually, perhaps, further, hydrophobic pipeline still includes the second hydrophobic pipeline with the 6 parallel connection of sixth valve group, the second hydrophobic pipeline includes series connection's fifth valve group 5, hydrophobic cooler, steam exhaust device is connected to through steam exhaust device to the oxygen-eliminating device.
In the embodiment, the drain cooler is connected with the steam exhaust device, the drain water at the heat supply primary station is cooled by the drain cooler and then enters the steam exhaust device, the normal cooling operation of the shaft seal heater and the boiler slag cooler is ensured, the drain temperature at the primary station is higher before the transformation and directly enters the deaerator for operation, after the transformation, the steam exhaust steam of the intermediate pressure cylinder is basically and completely discharged to the primary station heat network heater through the heat supply pipeline, the condensate water flow of the steam exhaust device is greatly reduced, the boiler slag cooler and the shaft seal heater are both cooled by the condensate water of the steam exhaust device, the normal operation of the shaft seal heater and the boiler slag cooler can not be realized due to the lack of the cooling water due to the great reduction of the cooling water, by adding the first station drainage bypass, the original drainage deaerator bypass is used as a unit steam exhaust device after being cooled by a drainage cooler, and the problems of cooling of a shaft seal heater and cooling of a boiler slag cooler are solved.
In some embodiments, a hydrophobic water pump 9 may be further disposed on the hydrophobic pipeline for powering the hydrophobic delivery.
Example 2
The embodiment provides an operation method of a low-pressure cylinder zero-power operation system of a direct air cooling unit based on embodiment 1, which includes the following steps:
and 4, controlling the steam flow entering the low-pressure cylinder according to the steam demand set value of the low-pressure cylinder, and controlling the steam flow entering the air cooling island according to the steam demand set value if the current environment temperature data is less than the set temperature.
Optionally, the set temperature may be set to be equal to or greater than 0 ℃.
As shown in FIG. 1, in the embodiment, the steam exhausted by the medium pressure cylinder of the unit enters the heat supply initial station through the fourth valve group 4, and only a small amount of cooling steam is reserved to enter the low pressure cylinder to cool the low pressure cylinder; the freezing problem of the air cooling island in extreme weather is considered, and the freezing prevention flow of the air cooling island is controlled through the valve group 2 and the temperature and pressure reducer 7, so that the freezing prevention purpose is achieved; the drain water of the heat supply initial station enters the steam exhaust device through the valve group 5 and the drain cooler, and the normal cooling operation of the shaft seal heater and the slag cooler is ensured.
Further, after the step 1, if the acquired operation state is the pumping operation, the third valve group 3, the fourth valve group 4 and the sixth valve group 6 are opened, and the first valve group 1, the second valve group 2, the fifth valve group 5, the first temperature and pressure reducer 7 and the second temperature and pressure reducer 8 are closed.
Further, after the step 1, if the acquired operation state is the pure condensing operation, the third valve group 3 is opened, the first valve group 1, the second valve group 2, the fourth valve group 4, the fifth valve group 5 and the sixth valve group 6 are closed, and the first temperature and pressure reducer 7 and the second temperature and pressure reducer 8 are closed.
The embodiment of the disclosure improves the steam pipeline of the unit by setting up a plurality of valve groups and temperature and pressure reducers, control the steam flow of entering low pressure cylinder and air cooling island through the temperature and pressure reducers, the flow direction of direct switching steam in the traditional system has been avoided, the problem of preventing frostbite of the air cooling island is solved, bearing seal heater cooling problem, boiler slag cooler cooling problem and low pressure cylinder cooling problem, switching through control valve group can realize that the unit carries out the nimble switching of extraction and condensation back of the body operation mode on line, the flexibility of unit operation is improved.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. Direct air cooling unit low pressure cylinder zero power operating system, characterized by: including steam turbine, steam extraction device and heat supply first station, the low pressure jar of heat supply first station and steam turbine is connected respectively to the high pressure jar of steam turbine or the steam output pipeline of intermediate pressure jar, and steam extraction device is connected to the output of the low pressure jar of steam turbine, still includes first valve group and the first branch road of desuperheating pressure reducer formation of series connection, and the high pressure jar of steam turbine or the steam output pipeline of intermediate pressure jar are connected to the input of low pressure jar through parallel connection's third valve group and first branch road.
2. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 1, wherein: still include main control unit and temperature sensor, first valve group, first pressure reducer that subtracts temperature are connected with main control unit electricity respectively.
3. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 2, wherein: and a fourth valve group is arranged on a connecting pipeline of a steam output pipeline of a high-pressure cylinder or a medium-pressure cylinder of the steam turbine and a heat supply initial station, and the fourth valve group is electrically connected with the main controller.
4. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 3, wherein: the steam quantity that the pipeline of the rear end of fourth valve group is connected to the air cooling island through the second branch road, the second pressure reducer that reduces temperature controls the steam quantity that transmits to the air cooling island according to the air cooling island demand steam quantity that sets for and ambient temperature, and the second pressure reducer that reduces temperature is connected with main control unit electricity.
5. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 1, wherein: the drain output end of the first heat supply station conveys drain back to the boiler of the unit through a drain pipeline, the drain pipeline comprises a sixth valve group and a deaerator which are sequentially connected, and the sixth valve group is electrically connected with the main controller.
6. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 5, wherein: the drain line still includes the second drain line with sixth valve group parallel connection, the second drain line includes series connection's fifth valve group and hydrophobic cooler, drainage cooler connects steam extraction device, is connected to the oxygen-eliminating device through steam extraction device.
7. The low-pressure cylinder zero-power operation system of the direct air cooling unit as claimed in claim 5, wherein: and a drainage water pump is also arranged on the drainage pipeline and used for providing power for hydrophobic conveying.
8. The operation method of the low-pressure cylinder zero-power operation system of the direct air cooling unit according to any one of claims 1 to 7, characterized by comprising the following steps:
acquiring a unit running state configured by a user; the unit operation state comprises zero power operation, extraction condensing operation and pure condensing operation;
when the operation is zero power, closing the third valve group and the sixth valve group, opening the first valve group, the second valve group, the fourth valve group and the fifth valve group, and simultaneously starting the first temperature and pressure reducer and the second temperature and pressure reducer;
acquiring detected environment temperature data, and acquiring a low-pressure cylinder steam demand set value and an air cooling island steam demand set value of a low-pressure cylinder running at zero power;
and controlling the steam flow entering the low-pressure cylinder according to a steam demand set value of the low-pressure cylinder, and controlling the steam flow entering the air cooling island according to the steam demand set value if the current environment temperature data is less than the set temperature.
9. The method of operation of claim 8, wherein: and when the acquired operation state is pumping and condensing operation, opening the third valve group, the fourth valve group and the sixth valve group, and closing the first valve group, the second valve group, the fifth valve group, the first temperature and pressure reducer and the second temperature and pressure reducer.
10. The method of operation of claim 8, wherein: and when the acquired operation state is pure condensation operation, opening the third valve group, closing the first valve group, the second valve group, the fourth valve group, the fifth valve group and the sixth valve group, and closing the first temperature and pressure reducer and the second temperature and pressure reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911376699.0A CN111058908A (en) | 2019-12-27 | 2019-12-27 | Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911376699.0A CN111058908A (en) | 2019-12-27 | 2019-12-27 | Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111058908A true CN111058908A (en) | 2020-04-24 |
Family
ID=70304124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911376699.0A Pending CN111058908A (en) | 2019-12-27 | 2019-12-27 | Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111058908A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066096U (en) * | 2011-05-31 | 2011-12-07 | 内蒙古电力勘测设计院 | Supercritical direct air-cooling heat-supply network drainage system of heat supply unit |
| CN102519033A (en) * | 2011-12-19 | 2012-06-27 | 中国电力工程顾问集团西北电力设计院 | Supercritical/super-supercritical unit heating drain recovery method |
| WO2014183235A1 (en) * | 2013-05-16 | 2014-11-20 | 国家电网公司 | Combined type condensed steam heat exchange system for direct air cooling steam turbine |
| CN108518253A (en) * | 2018-05-16 | 2018-09-11 | 西安西热节能技术有限公司 | A kind of cogeneration units Saving energy in Steam Turbine heating system |
| CN209246721U (en) * | 2018-09-13 | 2019-08-13 | 横琴瑞城新时代能源科技有限公司 | The winterization system of Air-Cooling Island |
| CN110332026A (en) * | 2019-06-20 | 2019-10-15 | 华电电力科学研究院有限公司 | A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling |
-
2019
- 2019-12-27 CN CN201911376699.0A patent/CN111058908A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202066096U (en) * | 2011-05-31 | 2011-12-07 | 内蒙古电力勘测设计院 | Supercritical direct air-cooling heat-supply network drainage system of heat supply unit |
| CN102519033A (en) * | 2011-12-19 | 2012-06-27 | 中国电力工程顾问集团西北电力设计院 | Supercritical/super-supercritical unit heating drain recovery method |
| WO2014183235A1 (en) * | 2013-05-16 | 2014-11-20 | 国家电网公司 | Combined type condensed steam heat exchange system for direct air cooling steam turbine |
| CN108518253A (en) * | 2018-05-16 | 2018-09-11 | 西安西热节能技术有限公司 | A kind of cogeneration units Saving energy in Steam Turbine heating system |
| CN209246721U (en) * | 2018-09-13 | 2019-08-13 | 横琴瑞城新时代能源科技有限公司 | The winterization system of Air-Cooling Island |
| CN110332026A (en) * | 2019-06-20 | 2019-10-15 | 华电电力科学研究院有限公司 | A kind of solidifying steam extraction power generation heating system and operation method for taking out back heat supply of coupling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108506057B (en) | Cogeneration system for cutting off steam inlet of low-pressure cylinder and adjusting method | |
| CN107218091B (en) | A kind of energy saving therrmodynamic system of thermal power plant's cold end and operation method | |
| CN109579108B (en) | High-backpressure coupling large-temperature-difference heating system for air cooling unit and operation method | |
| CN206144613U (en) | Thermoelectric decoupling zero heating system of steam is taken out from power plant boiler | |
| CN107859538B (en) | Combined heat and power generation system for condensing back heat supply and operation method thereof | |
| CN111023859A (en) | Anti-freezing system and method for low-pressure cylinder zero-power operation air cooling island of direct air cooling unit | |
| CN111365748B (en) | Heat supply method and heat supply system of cogeneration unit | |
| CN109854316B (en) | Combined cycle heat supply and power peak regulation coupling system based on energy cascade utilization and operation method thereof | |
| CN108533341A (en) | A kind of feed pump turbine exhaust steam residual heat recycling system | |
| CN111379603B (en) | Low-pressure cylinder zero-power unit heating pipe bypass system and working method thereof | |
| CN101769552B (en) | Low-vacuum-operating circulating water heating system of steam turbine in thermal power plant | |
| CN110332026B (en) | Steam extraction power generation heat supply system for coupling condensation back extraction heat supply and operation method | |
| CN112228173B (en) | Thermoelectric decoupling system and method combining low-back-pressure cutting cylinder and high back pressure | |
| CN208687705U (en) | A kind of system that excision low pressure (LP) cylinder is coupled into automotive row with low-pressure coal saver | |
| CN210483828U (en) | Energy-saving power generation and utilization system utilizing exhaust steam waste heat of steam turbine of thermal power plant | |
| JPH10169411A (en) | Steam turbine plant | |
| CN210178427U (en) | Long blade cooling system under cylinder cutting operation of steam turbine | |
| CN111058908A (en) | Low-pressure cylinder zero-power operation system and operation method of direct air cooling unit | |
| CN206636604U (en) | A kind of quick cooling system of temperature of power plant steam turbine | |
| CN110230521B (en) | Cascade heating system for heat pump by cutting off steam inlet coupling of low-pressure cylinder of thermoelectric unit and adjusting method | |
| CN211851937U (en) | Wet cooling unit low-pressure cylinder zero-power heating system | |
| CN208734387U (en) | Heating system is run based on 200MW pure condensate unit back pressuce machine | |
| CN112855287A (en) | Low-pressure-increasing operation system and method for steam extraction temporary complementary coupling low-pressure-saving under cylinder cutting working condition | |
| CN211598769U (en) | Steam turbine optical axis heating system for thermal power plant | |
| CN217632583U (en) | Heat supply type steam turbine unit with flexibly switched single-cutting cylinder and double-cutting cylinder operation modes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 250000 2-801, Yinhe building, No. 2008, Xinluo street, high tech Zone, Jinan City, Shandong Province Applicant after: SHANDONG HUADIAN ENERGY SAVING TECHNOLOGY Co.,Ltd. Address before: 250014 no.14958, Jingshi Road, Lixia District, Jinan City, Shandong Province Applicant before: SHANDONG HUADIAN ENERGY SAVING TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
|
| RJ01 | Rejection of invention patent application after publication |