CN119802465A - A saturated steam pipe network operation system - Google Patents
A saturated steam pipe network operation system Download PDFInfo
- Publication number
- CN119802465A CN119802465A CN202411869710.8A CN202411869710A CN119802465A CN 119802465 A CN119802465 A CN 119802465A CN 202411869710 A CN202411869710 A CN 202411869710A CN 119802465 A CN119802465 A CN 119802465A
- Authority
- CN
- China
- Prior art keywords
- steam
- pipe network
- regulating valve
- steam pipe
- 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.)
- Pending
Links
Landscapes
- Control Of Turbines (AREA)
Abstract
The application provides a saturated steam pipe network operation system which comprises a steam pipe network, steam generating points, saturated steam power generating units and a steam heat accumulator, wherein the steam generating points, the saturated steam power generating units and the steam heat accumulator are connected to the steam pipe network, a first regulating valve is arranged on a connecting pipeline of each steam generating point and the steam pipe network, a flow control device is arranged on a connecting pipeline of each steam generating point and the steam pipe network, the saturated steam power generating units comprise a plurality of steam turbine sets, a second regulating valve and a third regulating valve are arranged on a connecting pipeline of the saturated steam power generating units and the steam pipe network, the second regulating valve is located at the upstream of the third regulating valve, the third regulating valve is used for controlling steam inlet pressure stability of a steam turbine, and the second regulating valve is used for controlling pressure stability of the steam pipe network. The application is based on source-net-load-storage integrated cooperative consideration of the operation control of the saturated steam pipe network of the iron and steel enterprise, and ensures the stable operation pressure of the steam pipe network.
Description
Technical Field
The invention belongs to the technical field of steam pipe network utilization, and particularly relates to a saturated steam pipe network operation system.
Background
The saturated steam system is one of main energy medium systems of iron and steel enterprises, improves the conveying and operating efficiency of a saturated high-steam pipe network, and has great significance for reducing the energy consumption of the iron and steel enterprises.
There are a number of problems in the current operation of saturated steam pipe networks of iron and steel enterprises. The steam generating points, the steam using points and the saturated steam generating units are generally distributed in different areas of a steel mill, the problems of pressure loss, diffusion and the like caused by unsmooth cooperation often occur in the pipe network operation process by adopting distributed control, so that the saturated steam resource waste is caused, and the steam utilization benefit is low. In addition, because of the characteristics of the process production of iron and steel enterprises, the fluctuation of the produced steam and the used steam exists, the fluctuation of the steam pressure and the flow of the pipe network is large, the problems of diffusion and the like occur frequently, and the method provides challenges for the safe and stable operation of the saturated steam pipe network.
Disclosure of Invention
Aiming at the problems, the invention provides a high-efficiency operation control method for a saturated steam pipe network of a steel production enterprise, which can improve the operation efficiency of the saturated steam pipe network, improve the utilization benefit of saturated steam and generate good economic value.
In order to solve the technical problems, the invention provides a saturated steam pipe network operation system which comprises a steam pipe network, a steam generating point, a saturated steam power generating unit and a steam heat accumulator which are connected on the steam pipe network,
Wherein, a first regulating valve is arranged on a connecting pipeline of each steam generating point and the steam pipe network;
Wherein, a flow control device is arranged on a connecting pipeline of each production steam point and the steam pipe network;
The saturated steam power generation unit comprises a plurality of turbine units, a second regulating valve and a third regulating valve are arranged on a connecting pipeline of the saturated steam power generation unit and a steam pipe network, the second regulating valve is located at the upstream of the third regulating valve, the third regulating valve is used for controlling the steam turbine to enter steam for stable pressure, and the second regulating valve is used for controlling the stability of the steam pipe network pressure.
Optionally, the opening degree of the first regulating valve is such that the pressure of the steam pipe network is greater than the steam pressure output by the regulating valve.
Optionally, the first to third regulating valves are electric regulating valves or pneumatic regulating valves.
Optionally, the flow control device is an orifice plate or a flow control regulating valve.
Optionally, when the pressure fluctuation of the steam pipe network is within the pressure fluctuation range, the pressure and the flow of the steam pipe network are kept stable by adjusting the load of a steam turbine of the saturated steam power generation unit;
And a steam filling pipeline and a steam discharging pipeline are connected between the steam heat accumulator and the steam pipe network, so that when the pressure fluctuation of the steam pipe network cannot be ensured in the pressure fluctuation range by the load adjustment of the steam turbine, the steam is filled and discharged through the steam heat accumulator unit, and the pressure and flow stability of the steam pipe network are ensured.
Optionally, for unstable or intermittent steam production points, a steam heat accumulator is arranged at the steam source side.
Optionally, the third regulating valve is used for controlling the steam inlet pressure of the steam turbine to be stable, and the second regulating valve is used for controlling the stability of the steam pipe network pressure, and comprises the third regulating valve for regulating the opening according to the load of the steam turbine, and the second regulating valve for regulating the opening according to the steam pipe network pressure.
Optionally, the pressure fluctuation range is ±0.3Mpa.
The application is based on source-net-load-storage integrated cooperative consideration of the operation control of the saturated steam pipe network of the iron and steel enterprise, ensures the stable operation pressure of the steam pipe network, has no diffusion, improves the steam utilization benefit and ensures the steam supply quality of a steam point. The control system is used for cooperatively controlling steam inlet and outlet of the steam pipe network steam generating point, the steam consuming point, the rich saturated steam generating unit and the steam heat accumulator unit of the iron and steel enterprises. The control of the steam generating point is to set necessary regulation measures on a steam pipeline outside the steam generating point, to the unstable steam source point of the steam generating, necessary heat storage measures are set in the internal system of the steam generating point to ensure stable steam supply, the steam quality meets the requirement of a steam using point, the control of the steam generating point is to set necessary flow control measures on a steam inlet pipeline of the steam using point based on the requirement of the steam using point to ensure the steam flow supply during use and simultaneously avoid the occurrence of large unpredictable fluctuation of the pressure of a pipe network, the control of the rich saturated steam generating unit is to set double regulation gates on the steam inlet pipeline of a saturated steam generating turbine of the rich saturated steam generating unit, the regulation gates close to the turbine side control the steam inlet pressure of the turbine to be stable, the operation efficiency of the turbine is ensured under different loads, and the regulation gates close to the pipe network side are required to be quickly regulated along with the pressure of the steam pipe network to ensure the stability of the pressure of the steam pipe network. The steam heat accumulator unit is controlled by arranging a steam heat accumulator at the necessary position of a pipe network according to the need, and when the fluctuation of the steam flow is relatively large and the pressure of the pipe network cannot be ensured to be stable by adjusting the load of a steam turbine, the steam is charged and discharged through the steam heat accumulator, so that the steam pipe network is ensured to operate in a smaller pressure fluctuation range.
Drawings
Fig. 1 is a schematic structural diagram of a saturated steam pipe network operation system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a saturated steam pipe network operation system, which is based on the cooperative consideration of source-network-load-storage and the control of the saturated steam pipe network operation of a steel enterprise, and necessary control and regulation measures are arranged on the pipe network system. The system comprises a steam pipe network 100, a steam generating point 1 connected to the steam pipe network 100, a steam generating point 2 for production, a saturated steam power generating unit 3 and a steam heat accumulator 4.
The steam generating points 1 may be multiple, and a first regulating valve 5 is installed on a connecting pipeline between each steam generating point and the steam pipe network 100, and may be an electric regulating valve or a pneumatic regulating valve, and the first regulating valve 5 is interlocked with the steam flow output by the steam generating points, so that stable output of the steam supplied outside under the operation back pressure of the steam pipe network is ensured. Specifically, the opening of the first regulating valve 5 is used for controlling the first regulating valve 5 to output steam flow, so that the pressure of the steam pipe network is greater than the steam pressure output by the first regulating valve 5, and the steam pressure output by the first regulating valve 5 is stably output under the back pressure of the steam pipe network.
In addition, it should be noted that for the unstable or discontinuous steam production point 1, such as the steam production by the vaporization cooling of the converter, a necessary heat storage device can be arranged at the steam source side to ensure the stability of the steam output by the steam production point 1.
The production steam points 2 can be multiple, and the connecting pipeline of each production steam point and the steam pipe network is provided with a flow control device 8, which can be a throttle plate, a flow control regulating valve and the like. The steam flow is controllable and predictable when the valve is opened by the steam point to use steam in combination with the steam requirement of production, and simultaneously, the occurrence of unpredictable fluctuation of the pipe network pressure is avoided, and the saturated steam generator set cannot quickly reduce the load to adapt to new steam balance.
Wherein the saturated steam power generating units 3 may be plural, and the saturated steam power generating units 3 may be steam turbine sets. Two regulating valves, namely a second regulating valve 7 and a third regulating valve 6, are arranged on a connecting pipeline of the saturated steam power generation unit 3 and a steam pipe network, and the second regulating valve 7 is positioned at the upstream of the third regulating valve 6. The third regulating valve 6 close to the turbine side is used for controlling the steam inlet pressure of the turbine to be stable, and the operation efficiency of the turbine under different load conditions is ensured. The second regulating valve 7 close to the steam pipe network side is quickly regulated along with the pressure of the steam pipe network, so that the stability of the pressure of the steam pipe network is ensured. The steam flow balance under different steam utilization systems is preferentially ensured by the load adjustment of the steam turbine. Specifically, for example, when the steam pressure of the steam pipe network increases, the opening degree of the second regulating valve 7 is larger, and more steam is supplied to the saturated steam power generating unit 3, and when the steam pressure of the pipe network decreases, the opening degree of the second regulating valve 7 is smaller, and less steam is supplied to the saturated steam power generating unit 3. For example, if the turbine load decreases, the opening degree of the third regulating valve 6 decreases somewhat, and if the turbine load increases, the opening degree of the third regulating valve 6 increases somewhat.
The steam heat accumulator unit 4 is a steam heat accumulator arranged on a steam pipe network, and a steam charging pipeline and a steam discharging pipeline are connected between the steam heat accumulator and the steam pipe network. When the fluctuation of the steam flow is relatively large and the pressure and flow stability of the pipe network cannot be guaranteed through the load adjustment of the steam turbine, the steam accumulator unit 4 is used for charging and discharging steam, and the steam pipe network is guaranteed to operate in a smaller pressure fluctuation range. For a system with small pressure fluctuation of a steam pipe network, the load adjustment of a steam turbine of the saturated steam power generation unit can meet the flow adjustment requirement of the pipe network, and a steam heat accumulator can be omitted.
For example, the steam pressure of the steam pipe network is rapidly reduced from 1Mpa to 0.5Mpa, and the steam accumulator unit 4 delivers steam to the steam pipe network through the charging pipe. For example, the steam pressure of the steam pipe network is rapidly increased from 1Mpa to 1.5Mpa, and the steam pipe network transmits steam to the steam accumulator unit 4 through the steam release pipe. Whereas if the steam pressure of the steam pipe network is reduced from 1Mpa to 0.098Mpa, the steam accumulator unit 4 does not operate, and the saturated steam power generation unit 3 reduces the turbine load. For example, if the steam pressure of the steam pipe network increases from 1Mpa to 1.02Mpa, the steam accumulator unit 4 does not operate, and the saturated steam power generation unit 3 increases the turbine load.
The capacity selection of the steam accumulator unit 4 has a strong correlation with the pipe network pressure fluctuation and flow balance. When the capacity of the steam heat accumulator unit 4 is selected, the pressure fluctuation of the pipe network under various working conditions is ensured to be as small as possible, and the pressure fluctuation can be controlled within +/-0.3 MPa.
Of course, the present invention is capable of other various embodiments and its several details are capable of modification in accordance with the present invention by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A saturated steam pipe network operation system is characterized by comprising a steam pipe network, a steam generating point, a saturated steam power generating unit and a steam heat accumulator which are connected to the steam pipe network,
Wherein, a first regulating valve is arranged on a connecting pipeline of each steam generating point and the steam pipe network;
Wherein, a flow control device is arranged on a connecting pipeline of each production steam point and the steam pipe network;
The saturated steam power generation unit comprises a plurality of turbine units, a second regulating valve and a third regulating valve are arranged on a connecting pipeline of the saturated steam power generation unit and a steam pipe network, the second regulating valve is located at the upstream of the third regulating valve, the third regulating valve is used for controlling the steam turbine to enter steam for stable pressure, and the second regulating valve is used for controlling the stability of the steam pipe network pressure.
2. The saturated steam pipe network operation system of claim 1, wherein the first regulating valve opening is such that the pressure of the steam pipe network is greater than the steam pressure output by the regulating valve.
3. The saturated steam pipe network operation system of claim 1, wherein the first to third regulating valves are electric regulating valves or pneumatic regulating valves.
4. The saturated steam pipe network operation system of claim 1, wherein the flow control device is an orifice plate or a flow control regulating valve.
5. The saturated steam pipe network operation system according to claim 1, wherein when the pressure fluctuation of the steam pipe network is within the pressure fluctuation range, the pressure and the flow of the steam pipe network are kept stable by adjusting the load of a steam turbine of the saturated steam power generation unit;
And when the pressure fluctuation of the steam pipe network cannot be ensured in the pressure fluctuation range by the load adjustment of the steam turbine, the pressure and flow stability of the steam pipe network are ensured by filling and discharging steam through the steam heat accumulator unit.
6. The saturated steam pipe network operation system of claim 1, wherein a steam accumulator is arranged at a steam source side for a steam generating point of unstable or intermittent steam generation.
7. The saturated steam pipe network operation system of claim 1, wherein the third regulating valve is used for controlling the stability of the steam inlet pressure of the steam turbine, and the second regulating valve is used for controlling the stability of the steam pipe network pressure, which means that:
the third regulating valve regulates the opening according to the load of the steam turbine, and the second regulating valve regulates the opening according to the pressure of the steam pipe network.
8. The saturated steam pipe network operation system of claim 5, wherein the pressure fluctuation range is ± 0.3Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411869710.8A CN119802465A (en) | 2024-12-18 | 2024-12-18 | A saturated steam pipe network operation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411869710.8A CN119802465A (en) | 2024-12-18 | 2024-12-18 | A saturated steam pipe network operation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119802465A true CN119802465A (en) | 2025-04-11 |
Family
ID=95260527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411869710.8A Pending CN119802465A (en) | 2024-12-18 | 2024-12-18 | A saturated steam pipe network operation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119802465A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4448026A (en) * | 1981-09-25 | 1984-05-15 | Westinghouse Electric Corp. | Turbine high pressure bypass pressure control system |
| CN203310294U (en) * | 2013-05-21 | 2013-11-27 | 山东宏信化工股份有限公司 | Steam heat accumulation system |
| CN208024416U (en) * | 2018-02-28 | 2018-10-30 | 首钢京唐钢铁联合有限责任公司 | Steam control equipment |
| CN112112691A (en) * | 2020-10-16 | 2020-12-22 | 河北冀研能源科学技术研究院有限公司 | Asynchronous power generation system for cascade utilization of industrial steam of thermal power plant and adjusting method |
| US20230304421A1 (en) * | 2021-07-20 | 2023-09-28 | Hainan Jirui Haohan Power System Technology Co., Ltd. | Method of automatic load regulation, operation and protection for steam turbine and motor combined drive and power generation in converter saturated steam utilization |
| CN117270583A (en) * | 2023-09-26 | 2023-12-22 | 中冶南方都市环保工程技术股份有限公司 | Steam pipe network balance optimization control method and system |
| CN117307264A (en) * | 2023-08-17 | 2023-12-29 | 南京钢铁股份有限公司 | Method for reducing fluctuation of steelmaking waste heat steam power generation load |
| CN220321280U (en) * | 2023-05-05 | 2024-01-09 | 江苏道和环保科技有限公司 | Self-superheating equipment of waste heat boiler |
-
2024
- 2024-12-18 CN CN202411869710.8A patent/CN119802465A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4448026A (en) * | 1981-09-25 | 1984-05-15 | Westinghouse Electric Corp. | Turbine high pressure bypass pressure control system |
| CN203310294U (en) * | 2013-05-21 | 2013-11-27 | 山东宏信化工股份有限公司 | Steam heat accumulation system |
| CN208024416U (en) * | 2018-02-28 | 2018-10-30 | 首钢京唐钢铁联合有限责任公司 | Steam control equipment |
| CN112112691A (en) * | 2020-10-16 | 2020-12-22 | 河北冀研能源科学技术研究院有限公司 | Asynchronous power generation system for cascade utilization of industrial steam of thermal power plant and adjusting method |
| US20230304421A1 (en) * | 2021-07-20 | 2023-09-28 | Hainan Jirui Haohan Power System Technology Co., Ltd. | Method of automatic load regulation, operation and protection for steam turbine and motor combined drive and power generation in converter saturated steam utilization |
| CN220321280U (en) * | 2023-05-05 | 2024-01-09 | 江苏道和环保科技有限公司 | Self-superheating equipment of waste heat boiler |
| CN117307264A (en) * | 2023-08-17 | 2023-12-29 | 南京钢铁股份有限公司 | Method for reducing fluctuation of steelmaking waste heat steam power generation load |
| CN117270583A (en) * | 2023-09-26 | 2023-12-22 | 中冶南方都市环保工程技术股份有限公司 | Steam pipe network balance optimization control method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103216282B (en) | Thermal power generating unit loading control system and method based on continuously adjustable back pressure | |
| CN103362770B (en) | The back pressure type small turbine of industrial frequency generator speed governing drives feed-water pump and method | |
| CN102537933A (en) | Adjustable feed water heat regenerative system for turbo generator unit | |
| CN114837757B (en) | High-water-adding bypass frequency modulation system of thermal power plant provided with steam ejector and working method | |
| CN113595105A (en) | Method and system for realizing power grid frequency modulation by utilizing adiabatic compressed air energy storage | |
| CN115234320B (en) | Power generation system and operation method thereof | |
| CN119802465A (en) | A saturated steam pipe network operation system | |
| CN109638858B (en) | Frequency modulation peak modulation method, device and system | |
| CN111181184A (en) | An integrated comprehensive utilization system of production, storage and utilization based on pressure energy power generation | |
| CN118544842B (en) | Ammonia hydrogen production, internal combustion engine and fuel cell hybrid system based on heavy-duty equipment and efficient regulation and control method thereof | |
| CN110985218B (en) | Method and system for adjusting pressure of supercharger of gas turbine | |
| CN119572944A (en) | Natural gas pressure energy power generation and pressure regulation device and method | |
| CN219974677U (en) | A pipeline pressure control and power generation system | |
| CN115833163B (en) | Control method of power supply unit and power supply unit | |
| CN110970926A (en) | Auxiliary frequency regulation device based on energy-saving technology in thermal power plant and its control method | |
| CN117028968A (en) | A system and method for improving load response speed of thermal power units | |
| CN116451945A (en) | Optimal scheduling method for virtual electric heating comprehensive energy power plant by considering pipeline hydraulic dynamic | |
| CN210087400U (en) | Gas-steam combined cycle power plant shaft seal steam supply system | |
| CN116085083A (en) | Back pressure unit with adjustable load | |
| CN223826803U (en) | A low-quality steam self-balancing system | |
| CN118261388B (en) | Day-ahead and day-in two-stage scheduling method considering TESLA VALVE heat storage device | |
| CN114151145A (en) | Method and system for enabling steam generator and emergency condenser to synchronously operate | |
| CN120237236B (en) | A fuel cell hybrid power supply system and its interval efficiency regulation method | |
| CN115021279B (en) | Fire-storage combined frequency modulation system based on composite energy storage, condensate frequency modulation and boiler overshoot | |
| CN110671206B (en) | Distributed energy power station system and energy cascade utilization method |
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 |