Deep peak regulation multi-source integrated combined heat supply system based on steam process reconstruction
By designing low-pressure steam supply joint boxes and multiple pipeline systems in the deep peak-shaving multi-source integrated heating system for steam process reengineering, the insufficient hot and cold re-steam pressure and improper main steam supply in traditional systems are solved. The problem has achieved high efficiency energy utilization and cycling efficiency improvement.
Patent Information
- Application Number
- CN202420474949.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-12
AI Technical Summary
The traditional deep peak-shaving multi-source integrated heating system based on steam process reengineering. During the main steam reduction and pressure supply period, the hot and cold steam supply cannot meet the demand for the steam supply connected box due to low pressure, resulting in low-pressure users' use reduction. The main steam after decompression of temperature and pressure wastes high-quality heat sources; at the same time, the main steam cannot be supplied to high-pressure users, and the hot and cold are then supplied to low-pressure users.
A system including low-pressure steam supply connecting box, heat re-vapor supply pipeline, cold re-vapor supply pipeline and main steam supply pipeline after temperature reduction and pressure reduction was designed. Through the transfer connection pipe and valve components, the The dual inlet steam source of high-pressure steam supply box is used, and the hot and cold re-steam source is used for high loads. The main steam source after reducing temperature and reducing pressure is used for low loads. The electric valve and angle valve are used to control water flow and pressure and reduce pressure. Valves and pumps are used for automatic adjustment.
After reducing the temperature and pressure, the main steam is only for high-pressure users, and then for low-pressure users, which improves energy cascade utilization, reduces power supply coal consumption, and improves the circulation efficiency of the thermal power plant.
Smart Images
Figure CN222210482U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of externally supplying high-pressure steam, in particular to a deep peak-shaving multi-source integrated heating system based on steam process reengineering. Background Art
[0002] In order to supply high-pressure steam to the outside during deep peak regulation, thermal power plants increase the temperature and pressure reduction of the main steam before supplying steam to the outside. The steam supply manifold generally has three inlets and two outlets. The inlet steam is cold reheat, hot reheat, and main steam after temperature and pressure reduction, and the outlet steam is high-pressure users and low-pressure users respectively.
[0003] The traditional deep peak load regulation multi-source integrated heating system based on steam process reengineering has the following defects:
[0004] (1) During the period of using the main steam to reduce temperature and pressure, the cold and hot re-supply steam cannot supply steam to the steam supply header due to its low pressure. Even if the cold and hot re-supply pressure is greater than the pressure of the low-pressure user, the low-pressure user still has to use the main steam after temperature and pressure reduction, wasting high-quality heat source;
[0005] (2) During the main steam supply period after temperature reduction and pressure reduction, it is impossible to supply the main steam to high-pressure users and then supply the cold and hot steam to low-pressure users. Utility Model Content
[0006] The purpose of the utility model is to provide a deep peak-shaving multi-source integrated heating system based on steam process reengineering, so as to solve the problem proposed in the above background technology that during the period of using main steam to reduce temperature and pressure to supply steam, the cold and hot re-supply steam cannot supply steam to the steam supply manifold due to low pressure, and even if the cold and hot re-supply pressure is greater than the pressure of the low-pressure user, the low-pressure user has to use the main steam after cooling and pressure reduction, wasting high-quality heat source; during the period of main steam supply after cooling and pressure reduction, it is impossible to supply the main steam to high-pressure users and the cold and hot re-supply steam to low-pressure users.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deep peak-shaving multi-source integrated heating system based on steam process reengineering, comprising a low-pressure steam supply manifold, one side of the top of the low-pressure steam supply manifold is fixedly connected to a transfer connecting pipe, one side of the inside of the transfer connecting pipe is fixedly installed with a valve, one side of the top of the transfer connecting pipe is fixedly connected to a hot re-steam supply pipeline, the top of the hot re-steam supply pipeline is fixedly connected to a boiler to reheat steam pipeline, the other side of the top of the transfer connecting pipe is fixedly connected to a cold re-steam supply pipeline, The top of the cold re-supply steam pipeline is fixedly connected with a cold re-supply pipeline, the top of the cold re-supply pipeline is fixedly connected with a superheated steam pipeline from a boiler, one end of the cold re-supply pipeline is fixedly installed with a high-discharge check valve, one end of the transfer connecting pipe is fixedly connected with the main steam supply pipeline after temperature reduction and pressure reduction, the bottom end of the main steam supply pipeline after temperature reduction and pressure reduction is fixedly connected with a high-pressure steam supply manifold, both high and low pressure manifolds are used for cold and hot re-supply steam, the other side of the top of the low-pressure steam supply manifold is fixedly connected with a low-pressure user pipeline, and the low-pressure user pipeline is used to provide cold and hot low-pressure users.
[0008] Preferably, the top of the main steam supply pipeline after temperature reduction and pressure reduction is fixedly connected to one side of the superheated steam pipeline from the boiler, and the main steam supply pipeline after temperature reduction and pressure reduction is used to supply the main steam after temperature reduction and pressure reduction to high-pressure users.
[0009] Preferably, a high-pressure user pipeline is fixedly connected to one side of the top of the high-pressure steam supply manifold, and the high-pressure user pipeline is used to supply steam to high-pressure users.
[0010] Preferably, an electric valve is fixedly installed on one side of the low-pressure user pipeline, transfer connecting pipe, hot re-steam supply pipeline, cold re-steam supply pipeline, main steam supply pipeline after temperature and pressure reduction, and high-pressure user pipeline, and the electric valve is used to remotely control the valve.
[0011] Preferably, the low-pressure steam supply manifold, the high-pressure steam supply manifold, the cold re-supply steam pipeline and the main steam supply pipeline after temperature and pressure reduction are all fixedly installed with angle valves for controlling water flow and water pressure.
[0012] Preferably, pressure reducing valves are fixedly installed inside the low-pressure user pipeline, the transfer connecting pipe, the hot steam resupply pipeline, the cold steam resupply pipeline and the cold resupply pipeline, and the pressure reducing valves are valves for automatically adjusting the pressure.
[0013] Preferably, a pressure reducing pump is fixedly installed between the cold re-pipeline and the superheated steam pipeline from the boiler and inside the main steam supply pipeline after temperature reduction and pressure reduction, and a pump is fixedly installed inside the hot re-steam supply pipeline, and the pressure reducing pump is used to reduce the fluid pressure.
[0014] Compared with the prior art, the utility model has the following beneficial effects: during the main steam supply period after temperature reduction and pressure reduction, the main steam after temperature reduction and pressure reduction is only supplied to high-pressure users, and the cold and hot re-steam sources are supplied to low-pressure users. The high-pressure steam supply manifold is provided with double steam inlet sources, and the cold and hot re-steam sources are used at high load, and the main steam source after temperature reduction and pressure reduction is used at low load, thereby realizing cascade utilization of energy, reducing coal consumption for power supply, and improving the cycle efficiency of thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the system of the utility model.
[0016] In the figure: 1. Low-pressure steam supply manifold; 2. High-pressure steam supply manifold; 3. Low-pressure user pipeline; 4. Transfer connecting pipe; 5. Hot re-supply steam pipeline; 6. Reheat steam pipeline from boiler; 7. Cold re-supply steam pipeline; 8. Cold re-supply pipeline; 9. High-pressure exhaust check valve; 10. Superheated steam pipeline from boiler; 11. Valve; 12. Main steam supply pipeline after temperature reduction and pressure reduction; 13. High-pressure user pipeline; 14. Electric valve; 15. Angle valve; 16. Pressure reducing valve; 17. Pressure reducing pump; 18. Pump. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1 The utility model provides a deep peak-shaving multi-source integrated heating system based on steam process reengineering, including a low-pressure steam supply header 1, a transfer connecting pipe 4 is fixedly connected to one side of the top of the low-pressure steam supply header 1, a valve 11 is fixedly installed on one side of the transfer connecting pipe 4, a hot re-steam supply pipeline 5 is fixedly connected to one side of the top of the transfer connecting pipe 4, a boiler reheat steam pipeline 6 is fixedly connected to the top of the hot re-steam supply pipeline 5, a cold re-steam supply pipeline 7 is fixedly connected to the other side of the top of the transfer connecting pipe 4, a cold re-steam supply pipeline 8 is fixedly connected to the top of the cold re-steam supply pipeline 7, a boiler superheated steam pipeline 10 is fixedly connected to the top of the cold re-steam supply pipeline 8, a high-discharge check valve 9 is fixedly installed on one end of the cold re-steam supply pipeline 8, one end of the transfer connecting pipe 4 is fixedly connected to a main steam supply pipeline 12 after temperature reduction and pressure reduction, and the bottom end of the main steam supply pipeline 12 after temperature reduction and pressure reduction is fixedly connected to the high-pressure steam supply header 2.
[0019] When in use, use the newly built low-pressure steam supply manifold 1. During high load, open valve 11, and both the high and low pressure manifolds use cold and hot steam supply.
[0020] The other side of the top of the low-pressure steam supply manifold 1 is fixedly connected to a low-pressure user pipeline 3. The top of the main steam supply pipeline 12 after temperature reduction and pressure reduction is fixedly connected to one side of the superheated steam pipeline 10 from the boiler. The one side of the top of the high-pressure steam supply manifold 2 is fixedly connected to a high-pressure user pipeline 13.
[0021] When in use, through the steam supply pipeline 12 of the main steam after temperature reduction and pressure reduction, the main steam after temperature reduction and pressure reduction is only supplied to high-pressure users.
[0022] An electric valve 14 is fixedly installed on one side of the low-pressure user pipeline 3, the transfer connecting pipe 4, the hot re-steam supply pipeline 5, the cold re-steam supply pipeline 7, the main steam supply pipeline 12 after temperature reduction and pressure reduction, and the high-pressure user pipeline 13. An angle valve 15 is fixedly installed inside the low-pressure steam supply manifold 1, the high-pressure steam supply manifold 2, the cold re-steam supply pipeline 7, and the main steam supply pipeline 12 after temperature reduction and pressure reduction. A pressure reducing valve 16 is fixedly installed inside the low-pressure user pipeline 3, the transfer connecting pipe 4, the hot re-steam supply pipeline 5, the cold re-steam supply pipeline 7, and the cold re-steam pipeline 8. A pressure reducing pump 17 is fixedly installed between the cold re-steam pipeline 8 and the superheated steam pipeline 10 from the boiler and inside the main steam supply pipeline 12 after temperature reduction and pressure reduction, and a pump 18 is fixedly installed inside the hot re-steam supply pipeline 5.
[0023] When in use, a pressure reducing pump 17 is installed between the cold recirculation pipeline 8 and the boiler superheated steam pipeline 10 and inside the main steam supply pipeline 12 after temperature reduction and pressure reduction, and the fluid pressure is reduced by the pressure reducing pump 17.
[0024] During specific use, the utility model is a deep peak-shaving multi-source integrated combined heating system based on steam process reengineering. When using the deep peak-shaving multi-source integrated combined heating system based on steam process reengineering, during the period of using the main steam supply pipeline 12 after temperature reduction and pressure reduction, the main steam after temperature reduction and pressure reduction is only supplied to high-pressure users, and cold and hot steam sources are supplied to low-pressure users. The high-pressure steam supply manifold 2 is provided with a double steam inlet source. Cold and hot steam sources are used when the load is high, and the main steam source after temperature reduction and pressure reduction is used when the load is low, so as to realize the cascade utilization of energy, reduce the coal consumption for power supply, and improve the cycle efficiency of the thermal power plant. The newly built low-pressure steam supply manifold 1 is used. During high load, the valve 11 is opened, and both the high and low pressure manifolds use cold and hot steam supply; during low load, the valve 11 is closed, and the main steam after temperature reduction and pressure reduction is supplied to high-pressure users, and cold and hot steam is supplied to low-pressure users. This is the use process of the deep peak-shaving multi-source integrated combined heating system based on steam process reengineering.
[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A deep peak-shaving multi-source integrated heating system based on steam process reengineering, comprising a low-pressure steam supply header (1), characterized in that: A transfer connecting pipe (4) is fixedly connected to one side of the top of the low-pressure steam supply manifold (1), and a valve (11) is fixedly installed on one side of the inside of the transfer connecting pipe (4). A hot re-steam supply pipeline (5) is fixedly connected to one side of the top of the transfer connecting pipe (4), and a boiler reheat steam pipeline (6) is fixedly connected to the top of the hot re-steam supply pipeline (5). A cold re-steam supply pipeline (7) is fixedly connected to the other side of the top of the transfer connecting pipe (4), and a valve (11) is fixedly installed on the top of the cold re-steam supply pipeline (7). A cold recirculation pipeline (8), the top of which is fixedly connected to a boiler superheated steam pipeline (10), one end of which is fixedly installed with a high-pressure discharge check valve (9), one end of which is fixedly connected to a main steam supply pipeline (12) after temperature reduction and pressure reduction, the bottom end of which is fixedly connected to a high-pressure steam supply manifold (2), and the other side of the top of the low-pressure steam supply manifold (1) is fixedly connected to a low-pressure user pipeline (3).
2. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: The top end of the main steam supply pipeline (12) after temperature and pressure reduction is fixedly connected to one side of the superheated steam pipeline (10) from the boiler.
3. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: A high-pressure user pipeline (13) is fixedly connected to one side of the top of the high-pressure steam supply manifold (2).
4. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: An electric valve (14) is fixedly installed on one side of the low-pressure user pipeline (3), the transfer connecting pipe (4), the hot re-steam supply pipeline (5), the cold re-steam supply pipeline (7), the main steam supply pipeline (12) after temperature and pressure reduction, and the high-pressure user pipeline (13).
5. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: Angle valves (15) are fixedly installed inside the low-pressure steam supply manifold (1), the high-pressure steam supply manifold (2), the cold re-steam supply pipeline (7) and the main steam supply pipeline (12) after temperature and pressure reduction.
6. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: Pressure reducing valves (16) are fixedly installed inside the low-pressure user pipeline (3), the transfer connecting pipe (4), the hot re-steam supply pipeline (5), the cold re-steam supply pipeline (7) and the cold re-pipeline (8).
7. According to claim 1, a deep peak-shaving multi-source integrated heating system based on steam process reengineering is characterized by: A pressure reducing pump (17) is fixedly installed between the cold re-supply pipeline (8) and the boiler superheated steam pipeline (10) and inside the main steam supply pipeline (12) after temperature reduction and pressure reduction, and a pump (18) is fixedly installed inside the hot re-supply steam pipeline (5).