CN217109505U - Long-distance water-heat simultaneous conveying system - Google Patents
Long-distance water-heat simultaneous conveying system Download PDFInfo
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- CN217109505U CN217109505U CN202220428710.4U CN202220428710U CN217109505U CN 217109505 U CN217109505 U CN 217109505U CN 202220428710 U CN202220428710 U CN 202220428710U CN 217109505 U CN217109505 U CN 217109505U
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Abstract
The utility model relates to an use long distance hydrothermal of high-pressure steam as medium to send system simultaneously, it includes: fresh water preparation facilities, fresh water supercharging device, heat source device, long defeated pipeline of steam and end device that connect gradually, wherein: the fresh water preparation device is used for preparing fresh water, a water source inlet of the fresh water preparation device is connected with an external water source, and a fresh water outlet of the fresh water preparation device is connected with a fresh water inlet of the heat source device through a fresh water supercharging device; the heat source device is used for heating the fresh water into steam with preset pressure, and a first steam outlet of the heat source device is connected with the tail end device through a long-distance steam conveying pipeline; the end device is adapted to be connected to a user end and is configured to extract heat from the steam for supply to a hot user and condense the steam into water for supply to the water user. The utility model discloses a long distance hydrothermal is with sending system reduces transmission loss and investment cost through one-way pipeline with high-pressure steam long distance transport, both supplies heat and also supplies water, realizes the hydrothermal and send simultaneously.
Description
Technical Field
The utility model belongs to heat supply and water supply field, concretely relates to use long distance hydrothermal of high-pressure steam as medium to send system simultaneously.
Background
With the development of economy, the public demand for living quality is increasing, and thermal power plants (including thermal power plants with heating functions) as the main power source for urban operation are becoming more and more unsuitable for being continuously left in urban areas with high population density. In addition, under the guidance of the 'double carbon' strategy, clean nuclear power can replace part of thermal power to play an important role, and nuclear power plants are all built in places far away from residences. However, many segments of production and life activities have large heat demands, which depend on thermal power plants such as thermal power plants and nuclear power plants. It can be seen that how to resolve the contradiction between the separation of the supply end and the demand end, the long-distance transportation of heat from a suburban power plant to target users such as urban areas and industrial parks is a key technical problem which needs to be solved urgently at present.
Compared with hot water, the steam carries huge condensation latent heat, has higher heat quality and can meet the heat supply requirements of different levels from resident heat supply to industrial production steam. In addition, the steam does not form obvious static pressure due to height difference like water, the influence of topography fluctuation on the pressure of the pipeline does not need to be considered, and the steam has better compressibility and is difficult to generate the water hammer phenomenon commonly seen in the water conveying pipeline. In addition, the steam is condensed into water after releasing heat, and the water can be provided to a water user. In conclusion, the steam long-distance heat supply technology combined with fresh water preparation can realize efficient and safe simultaneous delivery of water and heat, a single-pass pipeline can replace a traditional two-pass pipeline for supplying and returning hot water, and the construction cost of a pipe network is remarkably reduced. However, the density of the steam is small, the flow velocity in the pipe is high, and the flow resistance is large for long-distance transportation. The long-distance hydrothermal co-delivery system in the prior art does not relate to how to efficiently deliver steam long distances with low energy consumption.
SUMMERY OF THE UTILITY MODEL
In order to solve all or part of the problems, the utility model aims to provide an use high-pressure steam as long distance hydrothermal of medium and send system simultaneously, carry high-pressure steam to urban area or industrial park from the thermal power plant long distance in the suburb through one-way pipeline, both heat supply and water supply realize hydrothermal and send simultaneously, reduce the energy consumption. High pressure delivery can significantly reduce steam flow rate, thereby reducing delivery losses.
The application provides a long distance hydrothermal is with sending system, including the fresh water preparation facilities, fresh water supercharging device, heat source device, the long pipeline of defeated steam and the end device that connect gradually, wherein: the fresh water preparation device is used for preparing fresh water, a water source inlet of the fresh water preparation device is connected with an external water source, and a fresh water outlet of the fresh water preparation device is connected with a fresh water inlet of the heat source device through a fresh water supercharging device; the heat source device is used for heating the fresh water into steam with preset pressure, and a first steam outlet of the heat source device is connected with the tail end device through a long-distance steam conveying pipeline; the end device is adapted to be connected to a user end and is configured to extract heat from the steam for supply to a hot user and condense the steam into water for supply to the water user.
In some embodiments, the heat source device further comprises a second steam outlet, and the second steam outlet is connected with the driving inlet of the fresh water preparation device.
In some embodiments, a steam generating device and a superheater are arranged in the heat source device, wherein a fresh water inlet of the heat source device is sequentially connected with an inlet of the steam generating device, an outlet of the steam generating device, an inlet of the superheater, an outlet of the superheater, and a first steam outlet of the heat source device, and the superheater is used for heating steam generated in the steam generating device to a preset state.
In some embodiments, a steam generation device and a first steam compression device are arranged in the heat source device, a fresh water inlet of the heat source device is sequentially connected with an inlet of the steam generation device, an outlet of the steam generation device, an inlet of the first steam compression device, an outlet of the first steam compression device, and a first steam outlet of the heat source device, and the first steam compression device is used for compressing the steam generated by the steam generation device to a preset state.
In some embodiments, a steam generating device and an isolating heat exchange device are arranged in the heat source device, wherein the isolating heat exchange device comprises a high-temperature side and a low-temperature side, an inlet of the high-temperature side is sequentially connected with an outlet of the high-temperature side, an inlet of the steam generating device and an outlet of the steam generating device, a fresh water inlet of the heat source device is sequentially connected with an inlet of the low-temperature side, an outlet of the low-temperature side and a steam outlet of the heat source device, and the isolating heat exchange device is used for isolating the internal circulation of the heat source device from the delivered steam.
In some embodiments, the steam compressor further comprises a plurality of second steam compression devices, the second steam compression devices are arranged on the steam long-distance pipeline, and when the number of the second steam compression devices is greater than 2, the plurality of second steam compression devices are arranged at intervals of a preset distance.
In some embodiments, a hydrothermal separation device is arranged in the end device, and is used for releasing heat in the steam and supplying the heat to a hot user, and meanwhile, the steam releases heat and condenses into water and supplies the water to the water user, wherein the hydrothermal separation device is selected from one of a heat exchanger, an absorption heat exchanger unit and an absorption waste heat recovery unit.
In some embodiments, a steam turbine is also disposed within the end unit, the steam turbine being connected to the inlet of the hydrothermal separation unit.
In some embodiments, the fresh water preparation device is selected from any one or more of a reverse osmosis membrane method fresh water preparation unit, a multistage flash evaporation fresh water preparation unit, a multi-effect distillation fresh water preparation unit and a hydrothermal coproduction fresh water preparation unit; the water source of the fresh water preparation device is one or more of seawater, river and lake water, industrial wastewater and domestic sewage.
In some embodiments, the heat source device is a thermal power plant and/or a nuclear power plant.
The long-distance hydrothermal simultaneous delivery system can efficiently and safely deliver heat produced by the heat source device to a user in a high-temperature and high-pressure steam mode in a long distance, has low delivery loss, can supply water while supplying heat, and realizes hydrothermal simultaneous delivery. Therefore, the contradiction that the heat source is separated from the user in the current and future urban development process can be effectively solved.
Drawings
Fig. 1 is a schematic system connection diagram of a first embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 2 is a system connection diagram of a second embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 3 is a schematic system connection diagram of a third embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 4 is a schematic system connection diagram of a fourth embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 5 is a schematic system connection diagram of a fifth embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 6 is a schematic system connection diagram of a sixth embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 7 is a schematic system connection diagram of a seventh embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention;
fig. 8 is a schematic system connection diagram of an eighth embodiment of a long-distance hydrothermal co-feeding system according to an embodiment of the present invention.
Detailed Description
For better understanding of the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings.
Fig. 1 shows a system connection schematic of a first embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. The long-distance hydrothermal simultaneous delivery system 100 comprises a fresh water preparation device 1, a fresh water supercharging device 2, a heat source device 3, a steam long-distance pipeline 4 and a tail end device 5 which are connected in sequence, wherein: the fresh water preparation device 1 is used for preparing fresh water, a water source inlet 11 of the fresh water preparation device 1 is connected with an external water source, a fresh water outlet 12 of the fresh water preparation device 1 is connected with a fresh water inlet 31 of the heat source device 3 through the fresh water supercharging device 2, and a concentrated wastewater outlet 13 of the fresh water preparation device 1 discharges concentrated wastewater generated in the process of preparing fresh water; the heat source device 3 is used for heating the fresh water into steam (high-pressure steam) with preset pressure, and a first steam outlet 32 of the heat source device 3 is connected with the end device 5 through the long-distance steam transmission pipeline 4; the end device 5 is intended to be connected to a user end and is configured to take heat from the steam to a hot user 51 and condense the steam into water to a water user 52.
The fresh water pressurizing device 2 mentioned in the present application may be added with a pump. In use of the long-distance hydrothermal co-delivery system 100 of the present application, the fresh water producing apparatus 1 is connected to an external water source for inputting the water source for producing fresh water. The fresh water enters the heat source device 3 to be heated after being pressurized by the fresh water pressurizing device 2, so that the fresh water forms high-temperature and high-pressure steam. The high-temperature and high-pressure steam is transported to a remote end device 5 for a long distance through a long steam transmission pipeline 4, the end device 5 takes heat from the steam and supplies the heat to a user 51, and the steam is condensed into water and supplies the water to a user 52, so that long-distance water and heat simultaneous transportation is finally completed.
Through the long-distance hydrothermal simultaneous delivery system 100, heat produced by the heat source device 3 can be efficiently and safely delivered to a user in a long-distance mode in the form of high-temperature and high-pressure steam, water can be supplied while heat is supplied, and hydrothermal simultaneous delivery is achieved. Therefore, the contradiction that the heat source is separated from the user in the current and future urban development process can be effectively solved.
Fig. 2 shows a system connection schematic of a second embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. Wherein, the heat source device 3 can further comprise a second steam outlet 37, and the second steam outlet 37 is connected with the driving inlet of the fresh water preparing device 1.
The fresh water preparation device 1 in the application can be any one or more of a multi-stage flash evaporation, multi-effect distillation, hydrothermal coproduction and other thermal method fresh water preparation units. In this embodiment, the second steam outlet 37 of the heat source device 3 is connected to the driving inlet of the fresh water producing device 1, so that the high-temperature and high-pressure steam in the heat source device 3 can be effectively utilized, and at the same time, high-temperature fresh water can be produced, and the energy utilization efficiency is higher.
Fig. 3 shows a system connection schematic of a third embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. The heat source device 3 is internally provided with a steam generation device 33 and a superheater 34, wherein the fresh water inlet 31 of the heat source device 3 is sequentially connected with the inlet 331 of the steam generation device 33, the outlet 332 of the steam generation device 33, the inlet 341 of the superheater 34, the outlet 342 of the superheater 34, and the first steam outlet 32 of the heat source device 3, and the superheater 34 is used for heating the steam generated in the steam generation device 33 to a preset state (i.e., a superheated state).
In this embodiment, the superheater 34 may be a thermal heating type or an electric heating type. Through the arrangement of the embodiment, the long-distance water heating simultaneous delivery system 100 of the present application can adjust the degree of superheat of the steam at the first steam outlet 32 of the heat source device 3, and ensure that the steam is not condensed due to heat leakage of the pipeline during long-distance delivery.
Fig. 4 shows a system connection schematic diagram of a fourth embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. The heat source device 3 is internally provided with a steam generation device 33 and a first steam compression device 35, a fresh water inlet 31 of the heat source device 3 is sequentially connected with an inlet 331 of the steam generation device 33, an outlet 332 of the steam generation device 33, an inlet 351 of the first steam compression device 35, an outlet 352 of the first steam compression device 35 and a first steam outlet 32 of the heat source device 3, and the first steam compression device 35 is used for compressing the steam generated by the steam generation device 33 to a preset state.
The long-distance hydrothermal co-delivery system 100 of the present application can adjust the degree of superheat of the steam at the first steam outlet 32 of the heat source device 3, and ensure that the steam is not condensed due to heat leakage of the pipeline during long-distance delivery.
Fig. 5 shows a system connection schematic of a fifth embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. The heat source device 3 is internally provided with a steam generating device 33 and an isolating heat exchange device 36, the isolating heat exchange device 36 comprises a high-temperature side and a low-temperature side, an inlet 361 of the high-temperature side is sequentially connected with an outlet 362 of the high-temperature side, an inlet 331 of the steam generating device 33 and an outlet 332 of the steam generating device 33, a fresh water inlet 31 of the heat source device 3 is sequentially connected with an inlet 363 of the low-temperature side, an outlet 364 of the low-temperature side and a steam outlet 32 of the heat source device 3, and the isolating heat exchange device 36 is used for isolating the internal circulation of the heat source device 3 from the delivered steam.
In this embodiment, the isolated heat exchange device 36 may be a heat exchanger or a heat pipe. The embodiment is more suitable for a nuclear power plant, and can effectively prevent radioactive internal circulation media from polluting outgoing steam.
Fig. 6 shows a system connection diagram of a sixth embodiment of a long-distance hydrothermal co-delivery system 100 according to an embodiment of the present invention. Wherein, the long-distance hydrothermal simultaneous conveying system 100 of the embodiment of the present invention may further include a plurality of second vapor compression devices 6, and the second vapor compression devices 6 are disposed on the long-distance steam transmission pipeline 4. Wherein, when the number of the second vapor compression devices 6 is greater than 2, a plurality of the second vapor compression devices 6 are arranged at intervals of a preset distance. Through this setting, be provided with second vapor compression device 6 at regular intervals on the long pipeline 4 of steam, maintain the high pressure state among the steam transportation process through multistage compression, can reduce the steam transportation loss.
Fig. 7 shows a system connection schematic diagram of a seventh embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. The end device 5 is provided with a hydrothermal separation device 53, the hydrothermal separation device 53 is used for releasing heat in the steam and supplying the heat to a heat user 52, and meanwhile, the steam releases heat and is condensed into water to be supplied to a water user 51.
The hydrothermal separation device 53 mentioned in the present application may be a heat exchanger, a large temperature difference absorption heat exchanger unit, or an absorption waste heat recovery unit.
Fig. 8 shows a system connection schematic diagram of an eighth embodiment of a long-haul hydrothermal co-feed system 100 according to an embodiment of the present invention. Wherein, the end device 5 is also provided with a steam turbine 54, the steam entering the end device 5 pushes the steam turbine 54 to do work and generate power to supply to the electricity user, the exhaust steam from the steam turbine 54 enters the hydrothermal separation device 53 to release heat and supply to the heat user 52, and the steam is condensed into water to supply to the water user 51.
In some embodiments, the fresh water preparation apparatus 1 may be selected from any one or more of a reverse osmosis membrane method fresh water preparation unit, a multistage flash evaporation fresh water preparation unit, a multi-effect distillation fresh water preparation unit, and a hydrothermal coproduction fresh water preparation unit; the water source of the fresh water preparation device 1 can be one or more of seawater, river and lake water, industrial wastewater and domestic sewage.
In some embodiments, the heat source device 3 may be a thermal power plant and/or a nuclear power plant.
Note that, in fig. 1 to 8, the solid line other than the device is represented by steam, and the dotted line is represented by water. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The utility model provides a long distance hydrothermal is with sending system which characterized in that, includes fresh water preparation facilities, fresh water supercharging device, heat source device, long-distance transport pipeline of steam and the end device that connects gradually, wherein:
the fresh water preparation device is used for preparing fresh water, a water source inlet of the fresh water preparation device is connected with an external water source, and a fresh water outlet of the fresh water preparation device is connected with a fresh water inlet of the heat source device through the fresh water supercharging device;
the heat source device is used for heating fresh water into steam with preset pressure, and a first steam outlet of the heat source device is connected with the tail end device through a long-distance steam conveying pipeline;
the end device is for connection to a user end and is configured to extract heat from the steam for supply to a hot user and condense the steam into water for supply to the water user.
2. The long-reach hydrothermal co-delivery system according to claim 1, wherein the heat source device further comprises a second steam outlet connected to the drive inlet of the fresh water production device.
3. The long-distance hydrothermal simultaneous delivery system according to claim 1, wherein a steam generation device and a superheater are arranged in the heat source device, wherein a fresh water inlet of the heat source device is sequentially connected with an inlet of the steam generation device, an outlet of the steam generation device, an inlet of the superheater, an outlet of the superheater, and a first steam outlet of the heat source device, and the superheater is used for heating steam generated in the steam generation device to a preset state.
4. The long-distance hydrothermal simultaneous delivery system according to claim 1, wherein a steam generation device and a first steam compression device are arranged in the heat source device, a fresh water inlet of the heat source device is sequentially connected with an inlet of the steam generation device, an outlet of the steam generation device, an inlet of the first steam compression device, an outlet of the first steam compression device, and a first steam outlet of the heat source device, and the first steam compression device is configured to compress steam generated by the steam generation device to a preset state.
5. The long-distance hydrothermal simultaneous delivery system according to claim 1, wherein a steam generation device and an isolation heat exchange device are arranged in the heat source device, the isolation heat exchange device comprises a high-temperature side and a low-temperature side, an inlet of the high-temperature side is sequentially connected with an outlet of the high-temperature side, an inlet of the steam generation device and an outlet of the steam generation device, a fresh water inlet of the heat source device is sequentially connected with an inlet of the low-temperature side, an outlet of the low-temperature side and a steam outlet of the heat source device, and the isolation heat exchange device is used for isolating internal circulation of the heat source device from delivered steam.
6. The long-distance hydrothermal co-delivery system according to any one of claims 1-5, further comprising a plurality of second vapor compression devices disposed on the vapor long-distance pipeline, wherein the plurality of second vapor compression devices are spaced apart by a preset distance when the number of second vapor compression devices is greater than 2.
7. The long-distance hydrothermal simultaneous transport system according to any one of claims 1-5, wherein a hydrothermal separation device is arranged in the end device, the hydrothermal separation device is used for releasing heat in steam and supplying the heat to a hot user, and meanwhile, the steam releases heat and is condensed into water and supplied to a water user, wherein the hydrothermal separation device is selected from one of a heat exchanger, an absorption heat exchanger unit and an absorption waste heat recovery unit.
8. The long-distance hydrothermal simultaneous transfer system according to claim 7, wherein a steam turbine is further provided in the end device, and the steam turbine is connected to an inlet of the hydrothermal separation device.
9. The long-distance hydrothermal simultaneous transportation system according to any one of claims 1 to 5, wherein the fresh water preparation device is selected from any one or more of a reverse osmosis membrane method fresh water preparation unit, a multistage flash evaporation fresh water preparation unit, a multi-effect distillation fresh water preparation unit, and a hydrothermal simultaneous production fresh water preparation unit; the water source of the fresh water preparation device is one or more of seawater, river and lake water, industrial wastewater and domestic sewage.
10. The long-haul hydrothermal co-delivery system of any one of claims 1-5, wherein the heat source device is a thermal power plant and/or a nuclear power plant.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220428710.4U CN217109505U (en) | 2022-02-28 | 2022-02-28 | Long-distance water-heat simultaneous conveying system |
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| CN202220428710.4U CN217109505U (en) | 2022-02-28 | 2022-02-28 | Long-distance water-heat simultaneous conveying system |
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| CN217109505U true CN217109505U (en) | 2022-08-02 |
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