CN215949605U - Multi-grade combined supply industrial steam supply system - Google Patents
Multi-grade combined supply industrial steam supply system Download PDFInfo
- Publication number
- CN215949605U CN215949605U CN202121991034.3U CN202121991034U CN215949605U CN 215949605 U CN215949605 U CN 215949605U CN 202121991034 U CN202121991034 U CN 202121991034U CN 215949605 U CN215949605 U CN 215949605U
- Authority
- CN
- China
- Prior art keywords
- steam
- pipeline
- supply
- steam supply
- pressure
- 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.)
- Active
Links
Images
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to a multi-level combined supply industrial steam supply system which comprises a plurality of units connected in parallel, wherein each unit comprises a reheating hot section steam extraction pipeline, a temperature reduction water pipeline and a reheating cold section steam extraction pipeline, the reheating hot section steam extraction pipeline and the reheating cold section steam extraction pipeline are connected with one end of a temperature reducer, one pipeline connected with the other end of the temperature reducer is connected with a high-pressure steam supply pipeline, and the other pipeline is connected with a medium-pressure steam supply pipeline. The system automatically calculates the maximum industrial steam supply quantity of the whole plant and the steam supply scheme with the highest economy according to the parameters required by industrial heat users and by combining the real-time operation temperature, pressure and flow parameters of each unit measured by the measuring points, thereby realizing multi-grade steam combined supply.
Description
Technical Field
The utility model belongs to the field of thermal power generation, and particularly relates to a multi-grade combined supply industrial steam supply system.
Background
The information in this background section is only for enhancement of understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Today, the ability to improve the integrated energy services of large cogeneration units is one of the important ways to achieve the goals of "carbon peak-to-peak" and "carbon neutralization". The small cogeneration units and the self-contained units of production enterprises are gradually shut down, and the centralized supply of electric energy and heat energy by the large cogeneration units becomes a normal state. In fact, many industries require different grades of steam for production processes, such as chemical, food, light industry, and medicine. The actual requirement of the production ring for saving steam and the practical situation of shutting down the self-provided small unit provide a wide market for providing comprehensive energy supply for the large cogeneration unit. The cogeneration unit can extract part of steam for supplying to industrial production users while supplying power through transformation, thereby increasing the income sources of the cogeneration unit, saving the investment cost of the industrial heat users, promoting the emission reduction of regional carbon to a certain extent, providing space for new energy consumption and realizing 'multi-win'.
In the past, the research on industrial steam supply of the cogeneration unit mostly focuses on a single unit, and steam is extracted from different positions of the system so as to meet the corresponding requirements of users. However, the industrial steam extraction space of a single unit is limited, and when the demand of industrial heat users is large, the larger steam supply demand cannot be met. In addition, the unit can not supply steam for industry when shutting down because of reasons such as maintenance, and the like, and the steam demand of enterprises is also influenced to a certain extent. The above reasons may have an impact on steam supply quality and capacity.
Therefore, the multi-grade combined supply industrial steam supply system which overcomes the problems of a single unit and is suitable for a thermal power plant comprising a plurality of cogeneration units has important value.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides a multi-grade combined supply industrial steam supply system, is suitable for a thermal power plant comprising a plurality of cogeneration units, can realize the requirements of larger steam supply and adjustable space by utilizing the different operating conditions of the units, and calculates the maximum industrial steam supply of the whole plant and the corresponding steam supply scheme with the highest economy by acquiring the real-time operating temperature, pressure and flow parameters of the corresponding positions of the steam-water systems of the units so as to realize the combined supply of various grades of industrial steam. In addition, a plurality of steam supply sources ensure the industrial steam supply quantity and stability, and a plurality of matching schemes also provide possibility for improving the economy of an industrial steam supply system and an integral thermodynamic system.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a many grades ally oneself with supplies industry to supply vapour system, includes a plurality of units that connect in parallel, every unit includes reheat hot section extraction of steam pipeline, desuperheating water pipeline, reheat cold section extraction of steam pipeline, and reheat hot section extraction of steam pipeline and reheat cold section extraction of steam pipeline all link to each other with desuperheater one end, all supply vapour tube coupling all the way with high pressure on the pipeline that the desuperheater other end is connected, supply vapour tube coupling all the way with the middling pressure.
In a typical implementation manner, the outlet positions of the reheating hot-section steam extraction pipeline, the reheating cold-section steam extraction pipeline and the desuperheater are respectively provided with temperature, pressure and flow measuring points, the temperature, pressure and flow measuring points are used for monitoring the operation state in real time by combining operation data such as the operation power, main steam pressure, temperature and heat supply load of the units, collected parameters are transmitted to the calculating module, and the energy grade and the maximum steam supply flow which can be provided by each unit in the heating season and the non-heating season are calculated in real time, so that the steam supply grade and the maximum steam supply quantity of the whole thermal power plant are obtained. In addition, whether the quality and the flow of the steam meet the requirements can be detected, and the steam supply mode and the steam supply quantity of each unit corresponding to the real-time optimal steam supply scheme can be given for reference.
In a typical embodiment, the reheat hot section extraction line is located between the boiler reheater outlet of the cogeneration unit and the inlet of the intermediate pressure cylinder for providing the reheat hot section industrial extraction.
In a typical embodiment, the reheat cooling section extraction line is located between the inlet of the boiler reheater of the cogeneration unit and the second stage reheat extraction to provide the reheat cooling section industrial extraction.
In a typical embodiment, the desuperheating water is taken from a water supply pump intermediate tap of a cogeneration unit.
In a typical embodiment, the industrial steam extraction system of each unit comprises a boiler, the boiler is connected with one end of a high-pressure cylinder, the other end of the high-pressure cylinder is sequentially connected with a reheating cold section steam extraction pipeline, a boiler reheater, a reheating hot section steam extraction pipeline, an intermediate pressure cylinder and a low-pressure cylinder, and the high-pressure cylinder is sequentially connected with the intermediate pressure cylinder, the low-pressure cylinder and a generator and coaxially arranged; one end of the low pressure cylinder, which is far away from the medium pressure cylinder, is sequentially connected with a condenser and a feed pump; further, the condenser is connected with a condenser water replenishing device.
In a typical embodiment, the intermediate pressure cylinder is connected to a deaerator, which is connected to a feed water pump, and the intermediate pressure cylinder is further connected to a boiler feed water pump turbine to drive the feed water pump that provides the desuperheating water.
In one exemplary embodiment, the temperature measurement point is a thermocouple, the pressure measurement point is an absolute pressure transducer, and the flow measurement point is an ultrasonic flow meter.
In a typical embodiment, the high-pressure steam supply line and the medium-pressure steam supply line are both connected with a control valve for delivering to different industrial heat users.
One or more embodiments of the present application achieve at least the following technical effects:
(1) the utility model can realize the temperature alignment and the cascade utilization. Because multiple units participate in industrial steam supply together, the electric load instructions issued by scheduling when each unit operates are different, and the industrial steam supply capacity and parameters of the units are different. According to steam parameters required by users, real-time operation temperature, pressure and flow parameters of each unit are measured by combining measuring points, a proper steam extraction position is selected, and whether steam supply parameters are adjusted by using desuperheating water or not is achieved, so that industrial steam supply of the unit with the steam supply parameters closest to the parameters of the user side is achieved.
(2) The utility model utilizes a plurality of sets to supply industrial steam, has wide steam source, can still supply industrial steam to other sets even if the steam supply of a single set is influenced by the conditions of shutdown or maintenance of a certain set and the like, and has stronger steam supply stability. The multi-unit combined steam supply not only can realize the combined supply of various-grade industrial steam supply, but also can avoid the safety limit of the maximum industrial steam extraction amount of a single unit. The system can check and calculate the matching of the steam supply capacity and the economy of the whole plant through the operation condition of the unit and the real-time calculation of the heat, electricity and steam adjustable space of the unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic structural diagram of a multi-grade combined supply industrial steam supply system in embodiment 1 of the present invention;
wherein, 1 and #1 machine set; 2. a #1 unit reheating hot section steam extraction pipeline; 3. #1 Unit attemperation water line; 4. a steam extraction pipeline of a reheating and cooling section of a #1 unit; 5. #1 Unit desuperheater; 6. #2 Unit; 7. a #2 unit reheating hot section steam extraction pipeline; 8. #2 Unit attemperation water line; 9. a steam extraction pipeline of a reheating and cooling section of a #2 unit; 10. #2 Unit desuperheater; 11. #3 Unit; 12. a #3 unit reheating hot section steam extraction pipeline; 13. #3 Unit attemperation water line; 14. a steam extraction pipeline of a reheating and cooling section of a #3 unit; 15. #3 Unit desuperheater; 16. a #4 unit; 17. a #4 unit reheating hot section steam extraction pipeline; 18. #4 Unit attemperation water line; 19. a steam extraction pipeline of a reheating and cooling section of a #4 unit; 20. #4 Unit desuperheater; 21. a high pressure gas supply line; 22. a medium pressure steam supply pipeline.
Fig. 2 is a schematic structural diagram of a steam extraction system of a single unit in a multi-level combined supply industrial steam supply system in embodiment 1 of the present invention;
23, a boiler; 24. a high pressure cylinder; 25. an intermediate pressure cylinder; 26. a low pressure cylinder; 27. a generator; 28. a condenser; 29. a deaerator; 30. a feed pump; 31. a boiler feed pump turbine; 32. a condenser water replenishing device; 33. a reheating hot section steam extraction pipeline; 34. and a reheating cold section steam extraction pipeline.
Detailed Description
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 application 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 application. 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.
Example 1
As shown in fig. 1 and 2, the present invention is a multi-level combined supply industrial steam supply system, which is illustrated by taking 4 units as an example. The protection scope of the utility model is not limited to 4 units, and units with similar structures can be integrated into the system for research. Each unit comprises a reheating hot-section steam extraction pipeline 2/7/12/17, a desuperheating water pipeline 3/8/13/18 and a reheating cold-section steam extraction pipeline 4/9/14/19, wherein the reheating hot-section steam extraction pipeline 2/7/12/17 and the reheating cold-section steam extraction pipeline 4/9/14/19 are connected with one end of a desuperheater 5/10/15/20, one route of the pipeline connected with the other end of the desuperheater 5/10/15/20 is connected with a high-pressure steam supply pipeline 21, and the other route of the pipeline is connected with a medium-pressure steam supply pipeline 22. The outlet positions of the reheating hot-section steam extraction pipeline 2/7/12/17, the reheating cold-section steam extraction pipeline 4/9/14/19 and the desuperheater 5/10/15/20 are provided with temperature, pressure and flow measuring points, the temperature, pressure and flow measuring points are used for monitoring operation parameters in real time according to operation data such as unit operation power, main steam pressure, temperature and heat supply load, the collected data are transmitted to a computing system, energy grade and maximum steam supply flow which can be provided by each unit in heating seasons and non-heating seasons are calculated in real time, and then steam supply grade and maximum steam supply quantity of the whole thermal power plant are obtained. In addition, whether the quality and the flow of the steam meet the requirements or not can be detected, and the steam supply mode and the steam supply quantity of each unit corresponding to the real-time optimal steam supply scheme are given for reference. The reheat hot leg extraction line 2/7/12/17 is located between the cogeneration unit boiler reheater outlet and the inlet of the high pressure cylinder 24 for providing a reheat hot leg industrial extraction.
And the reheating cold section steam extraction pipeline 4/9/14/19 is positioned between the inlet of a reheater of the boiler of the cogeneration unit and the second-stage reheating steam extraction to provide reheating cold section industrial steam extraction. The desuperheating water is from the middle tap of a water supply pump of the cogeneration unit. The industrial steam extraction system of each unit comprises a boiler 23, wherein the boiler 23 is connected with one end of a high-pressure cylinder 24, the other end of the high-pressure cylinder 24 is sequentially connected with a reheating cold section steam extraction pipeline 34, a boiler reheater, a reheating hot section steam extraction pipeline 33, an intermediate pressure cylinder 25 and a low-pressure cylinder 26, and the high-pressure cylinder 24, the intermediate pressure cylinder 25, the low-pressure cylinder 26 and a generator 27 are sequentially connected and coaxially arranged; one end of the low pressure cylinder 26, which is far away from the intermediate pressure cylinder 25, is sequentially connected with a condenser 28 and a feed pump 30; the condenser 28 is connected with a condenser water replenishing device 32. The intermediate pressure cylinder 25 is connected with a deaerator 29, and the deaerator 29 is connected with a water supply pump 30. The intermediate pressure cylinder 25 is also connected to a boiler feed pump turbine 31 to drive a feed pump that provides desuperheated water.
Example 2
The working principle of the multi-grade combined supply industrial steam supply system in the embodiment 1 is as follows: the characteristic that the parameters of the reheating hot section and the reheating cold section are different when different units run is utilized, and the possibility of more steam supply grades is provided. All reheating hot sections participating in industrial steam supply units in the thermal power plant are connected with an industrial steam supply system, are mixed with desuperheating water from the middle taps of water supply pumps of all units in a desuperheater, parameters are adjusted according to steam supply requirements, when the cogeneration unit operates at a high load, the reheating hot section industrial steam extraction parameters are larger than user side requirement parameters, and then steam extraction and the desuperheating water taken from the middle taps of the water supply pumps of the units need to be mixed and then the parameters are adjusted. According to different industrial heat user demand parameters, the steam enters a high-pressure steam supply pipeline and a medium-pressure steam supply pipeline respectively, and is conveyed to different industrial heat users under the control action of a control valve. The reheat cooling section steam of the industrial steam supply unit directly enters a high-pressure steam supply pipeline or enters a medium-pressure steam supply pipeline after being mixed with desuperheating water and adjusting parameters according to temperature and pressure parameters measured by a measuring point. The system automatically calculates the maximum industrial steam supply quantity of the whole plant and the steam supply scheme with the highest economy according to the parameters required by industrial heat users and by combining the real-time operation temperature, pressure and flow parameters of each unit measured by the measuring points, thereby realizing multi-grade steam combined supply. In addition, the industrial steam extraction drainage is not recycled, and all units supplement water in a condenser to maintain the working medium balance in the thermodynamic cycle process.
Specifically, hot re-extraction steam in a reheating hot section steam extraction pipeline 2 of the #1 unit 1 and desuperheating water in a desuperheating water pipeline 3 of the #1 unit are mixed in a desuperheater 5, parameters are adjusted, and the mixture enters a high-pressure steam supply pipeline 21 or a medium-pressure steam supply pipeline 22 under the control of a valve;
the cold re-extraction steam of the steam extraction pipeline 4 of the reheating cold section of the #1 unit can directly enter a high-pressure steam supply pipeline 21 or enter a medium-pressure steam supply pipeline 22 after parameters are adjusted by desuperheating water according to actual parameters;
hot re-extraction steam of a reheating hot section steam extraction pipeline 7 of a #2 unit 6 is mixed with desuperheating water in a desuperheating water pipeline 8 of the #2 unit in a desuperheater 10, parameters are adjusted, and the mixture enters a high-pressure steam supply pipeline 21 or a medium-pressure steam supply pipeline 22 under the control of a valve;
the cold re-extraction steam of the steam extraction pipeline 9 of the #2 unit reheating cold section can directly enter a high-pressure steam supply pipeline 21 or enter a medium-pressure steam supply pipeline 22 after parameters are adjusted by desuperheating water according to actual parameters;
hot re-extraction steam of a reheating hot section steam extraction pipeline 12 of a #3 unit 11 is mixed with desuperheating water in a desuperheating water pipeline 13 of the #3 unit in a desuperheater 15, parameters are adjusted, and the mixture enters a high-pressure steam supply pipeline 21 or a medium-pressure steam supply pipeline 22 under the control of a valve;
the cold re-extraction steam of the steam extraction pipeline 14 of the reheating cold section of the #3 unit can directly enter a high-pressure steam supply pipeline 21 or enter a medium-pressure steam supply pipeline 22 after parameters are adjusted by desuperheating water according to actual parameters;
hot re-extraction steam of a reheating hot section steam extraction pipeline 17 of a #4 unit 16 is mixed with desuperheating water in a desuperheating water pipeline 18 of the #4 unit in a desuperheater 20, parameters are adjusted, and the mixture enters a high-pressure steam supply pipeline 21 or a medium-pressure steam supply pipeline 22 under the control of a valve;
the cold re-extraction steam of the steam extraction pipeline 19 of the reheating cold section of the #4 unit can directly enter a high-pressure steam supply pipeline 21 or enter a medium-pressure steam supply pipeline 22 after parameters are adjusted by desuperheating water according to actual parameters.
For each unit from #1 to #4, the present invention is described in detail as follows:
as shown in fig. 2, the main steam generated in the boiler 23 enters the high-pressure cylinder 24 to perform expansion work, then enters the boiler reheater through the cold-reheat steam extraction line 34, and the reheated steam passes through the hot-reheat steam extraction line 33, and the remaining steam sequentially enters the intermediate pressure cylinder 25 and the low-pressure cylinder 26 to perform expansion work. As the industrial steam supply drain is not recovered, a condenser water replenishing device 32 is utilized to replenish water at the condenser 28 so as to replenish the loss of the thermodynamic cycle working medium. The desuperheating water for adjusting the industrial extraction parameters is provided by the middle tap of the feed pump 30.
Wherein the #1 to #3 units are 330MW subcritical, single intermediate reheating, steam extraction and condensing units; the #4 unit is a 700MW subcritical, single intermediate reheating, steam extraction and condensing unit. According to the safe operation condition of the units, # 1- #3 units have the maximum steam extraction flow of the reheating hot section of 150t/h and the maximum steam extraction flow of the reheating cold section of 50 t/h; the maximum extraction flow of a reheating hot section of the #4 unit is 360t/h, and the maximum extraction flow of a reheating cold section is 100 t/h.
According to the dispatching instruction, the #1, #2 and #4 machine sets run, and the #3 machine set is stopped for standby. At the moment, the high-pressure industrial heat user needs steam with the pressure of 200t/h of 2.5MPa and the temperature of 315 ℃. The medium-pressure industrial heat user needs steam with the pressure of 1.5MPa at 100t/h and the temperature of 280 ℃.
In this embodiment, an industrial I-class E-type thermocouple is used for temperature measurement, a rosemint 3051-type absolute pressure transducer with a precision of 0.1 class is used for pressure measurement, and an ultrasonic flowmeter is used for flow measurement. And the unit operation power, the heat load and the like adopt data of a real-time DCS system.
The temperature and pressure measuring points measure that the data of the reheating hot section and the reheating cold section of the #1 and #2 unit are closer to the heat user requirement compared with the data of the #4 unit. According to the principle of 'temperature opening and cascade utilization', when the total demand of industrial steam is not large, all the steam required by high-pressure and medium-pressure industrial heat users is provided by the #1 and #2 units. When the industrial steam demand is large and cannot be met only by the #1 unit and the #2 unit, the steam supply of the combined #4 unit is considered.
Example 3
When the #1 unit is in a deep peak shaving state, the unit operates under the working condition of 30 percent THA. The pressure of the reheating and cooling section of the #1 unit is 1.51MPa, and the temperature is 302.67 ℃ through measuring points. Steam can be extracted from the reheating cold section of the #1 unit at the moment to replace the scheme of extracting higher-parameter steam from other on-line units. The two kinds of steam with small temperature difference are mixed, so that irreversible loss is reduced, and the economical efficiency of industrial steam supply is improved.
The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the utility model. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a many grades of antithetical couplet supplies industry to supply vapour system, its characterized in that, including a plurality of units that connect in parallel, every unit includes reheat hot section extraction steam pipe way, desuperheating water pipeline way, reheat cold section extraction steam pipe way, and reheat hot section extraction steam pipe way and reheat cold section extraction steam pipe way all link to each other with desuperheater one end, all supply vapour pipe connection with high pressure all the way on the pipeline that the desuperheater other end is connected, supply vapour pipe connection with the middling pressure all the way.
2. The multi-grade combined supply industrial steam supply system according to claim 1, wherein the outlet of the reheat hot section steam extraction pipeline, the outlet of the reheat cold section steam extraction pipeline and the outlet of the desuperheater are provided with a temperature measuring point, a pressure measuring point and a flow measuring point.
3. The multi-level combined supply industrial steam supply system according to claim 2, wherein the temperature measuring point is a thermocouple, the pressure measuring point is an absolute pressure transmitter, and the flow measuring point is an ultrasonic flowmeter.
4. The multi-tap co-generation industrial steam supply system of claim 1, wherein the reheat hot section steam extraction line is located between a boiler reheater outlet of the cogeneration unit and an inlet of the intermediate pressure cylinder.
5. The multi-tap co-generation industrial steam supply system of claim 1, wherein the reheat cold section steam extraction line is located between a boiler reheater inlet of the cogeneration unit and the second stage reheat steam extraction.
6. The multi-grade combined supply industrial steam supply system according to claim 1, wherein the temperature reducing water is from a water supply pump middle tap of the cogeneration unit.
7. The multi-grade combined supply industrial steam supply system according to claim 1, wherein the industrial steam extraction system of each unit comprises a boiler, the boiler is connected with one end of a high-pressure cylinder, the other end of the high-pressure cylinder is sequentially connected with a reheating cold section steam extraction pipeline, a boiler reheater, a reheating hot section steam extraction pipeline, an intermediate pressure cylinder and a low-pressure cylinder, and the high-pressure cylinder is coaxially connected with the intermediate pressure cylinder, the low-pressure cylinder and a generator in sequence; and one end of the low-pressure cylinder, which is far away from the medium-pressure cylinder, is sequentially connected with the condenser and the feed pump.
8. The multi-tap co-generation industrial steam supply system according to claim 7, wherein the condenser is connected with a condenser water replenishing device.
9. The multi-grade combined industrial steam supply system according to claim 7, wherein the intermediate pressure cylinder is connected with a deaerator; the intermediate pressure cylinder is also connected with a boiler feed pump steam turbine.
10. The multi-tap co-generation industrial steam supply system according to claim 1, wherein the high-pressure steam supply pipeline and the medium-pressure steam supply pipeline are both connected with a control valve to deliver to different industrial heat users.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121991034.3U CN215949605U (en) | 2021-08-23 | 2021-08-23 | Multi-grade combined supply industrial steam supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121991034.3U CN215949605U (en) | 2021-08-23 | 2021-08-23 | Multi-grade combined supply industrial steam supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215949605U true CN215949605U (en) | 2022-03-04 |
Family
ID=80434061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121991034.3U Active CN215949605U (en) | 2021-08-23 | 2021-08-23 | Multi-grade combined supply industrial steam supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215949605U (en) |
-
2021
- 2021-08-23 CN CN202121991034.3U patent/CN215949605U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203685322U (en) | Steam extraction heat supply system for 350MW supercritical heat supply unit | |
| CN107605553A (en) | Energy conserving system and its intelligent control method for steam power plant's multi-heat source industrial heating | |
| CN111237018A (en) | Industrial steam residual pressure cascade utilization system applied to coal-fired steam supply unit in shutdown non-shutdown mode | |
| CN104775860A (en) | System for improving reliability of heat supply network of subcritical coal-fired unit | |
| CN112240232A (en) | Steam power plant, method for modifying steam power plant, and method for operating steam power plant | |
| CN103195521A (en) | Double-turbine steam thermodynamic system with regenerative steam extraction function | |
| CN111047463A (en) | Peak regulation capacity evaluation method for heat supply unit after heat supply reconstruction by adopting low-temperature waste heat pump | |
| CN108119200A (en) | A kind of new bottom type back pressure heat supply steam turbine and its operation method | |
| CN107178398B (en) | Thermoelectric decoupling system for improving energy utilization quality of thermal power plant | |
| CN112762427A (en) | Multisource industrial steam supply switching system and method based on lowest coal consumption cost | |
| CN112594667A (en) | System and method for adjusting reheat steam temperature of high-temperature ultrahigh-pressure reheat dry quenching boiler | |
| CN112240231A (en) | Multi-source stable industrial steam supply system and method considering reliability and economy | |
| CN214405999U (en) | Multisource industry supplies vapour switched systems based on coal consumption cost is minimum | |
| CN205351277U (en) | A back pressure steam turbine thermodynamic system for isolated network operation | |
| CN114046186A (en) | High-flexibility high-thermoelectric-ratio composite thermal mass bypass heating system | |
| CN112065520B (en) | Cold and hot re-cooperative steam supply system and method | |
| US8015811B2 (en) | Method and apparatus for varying flow source to aid in windage heating issue at FSNL | |
| CN109028999A (en) | Boiler circuit | |
| CN215949605U (en) | Multi-grade combined supply industrial steam supply system | |
| CN210264838U (en) | Water-spraying temperature-reducing heat and power decoupling operation system of cogeneration unit | |
| CN205047259U (en) | System for be used for turbine unit extraction steam for factories to subtract temperature | |
| CN111237735A (en) | Emergency industrial steam supply system for realizing shutdown and non-shutdown of large coal-fired generator set | |
| CN215890119U (en) | Steam supply and heat supply system based on low-pressure cylinder zero-output unit | |
| CN213450529U (en) | Multi-source stable industrial steam supply system with reliability and economy | |
| CN110056402B (en) | Steam complementary energy utilization coupling steam extraction heat supply system and adjusting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |