CN108895514B - Full-network distributed heat storage and supply system and method - Google Patents
Full-network distributed heat storage and supply system and method Download PDFInfo
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- CN108895514B CN108895514B CN201810401753.1A CN201810401753A CN108895514B CN 108895514 B CN108895514 B CN 108895514B CN 201810401753 A CN201810401753 A CN 201810401753A CN 108895514 B CN108895514 B CN 108895514B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A whole-network distributed heat storage and supply system and a method belong to the field of heat storage and supply systems. The technical points are as follows: the method comprises the following steps: the system comprises a heat supply system, a heat storage system, a control system and a control platform, wherein the heat supply system is connected with the heat storage system, the control system is respectively connected with the heat supply system and the heat storage system, and the control platform is connected with the control system; the heat storage system comprises a heat storage tank, an electric shutoff valve, an electric regulating valve and a circulating water pump, wherein a cold water end and a hot water end of the heat storage tank are respectively connected into the heat supply system through the electric shutoff valve, the electric regulating valve and the circulating water pump. The novel heat supply system provided by the invention has the beneficial effects that the novel heat supply system provided with the heat storage device is arranged at the positions of a user, a heat exchange station, a pipe network, renewable energy sources, a thermal power plant, a regional boiler room and the like, and the peak regulation requirement of a heat source is met by combining heat storage at the user side, the pipe network side and the heat source side, and the novel heat supply system has the characteristics of reduced regulation range, closer distance from the user, stronger flexibility and the like.
Description
Technical Field
The invention belongs to the field of heat storage and supply systems, and particularly relates to a whole-network distributed heat storage and supply system and method.
Background
At present, plan heating is generally used as a main part in the heating industry, and under the background of the maximization of a pipe network, the problems of over-supply, under-supply, advance and lag in adjustment and the like exist in heating production, and fine adjustment cannot be realized. In the future, heat supply production needs to develop towards the direction of autonomous adjustment of users, namely, heat supply is carried out in a proper time and in a proper amount according to the heat demand of the users.
The heat energy supply side and the heat energy demand side have irregular fluctuation, the load fluctuation of the heat energy demand side is mainly influenced by the behavior factors of weather and people, the cogeneration of the heat energy supply side is influenced by the power grid dispatching, the industrial waste heat is influenced by the industrial production condition, and the renewable energy is influenced by the conditions such as weather. The principle and time of load fluctuation generation of a heat energy supply side and a demand side are different, timely matching cannot be achieved, meanwhile, a heat supply network is developed in a forward regionalization and large-scale mode, a heat supply system is greatly delayed, strongly coupled and heat inertia is more and more serious, load imbalance between the heat supply side and the demand side of the heat supply network is caused, and accurate heat supply cannot be achieved.
The application of the heat storage system is the key to solve the problems of timely load matching and heat utilization according to needs. The current common application form is centralized heat storage, namely a heat storage tank is positioned near a heat source to comprehensively regulate the whole heat supply system. Along with the gradual expansion of the scale of the heat supply pipe network, the regulation delay effect is gradually increased, so that the regulation delay at the heat source side acts on the user side, the heat imbalance is caused, and the heat supply quality is influenced; meanwhile, because different buildings or building groups have different load characteristics, the centralized heat storage cannot distribute the heat utilization requirements of the buildings according to the different load characteristics, but only can be uniformly adjusted, so that the flexibility is poor, and the advantage of heat storage cannot be fully exerted.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a whole-network distributed heat storage and supply system and a method, wherein a novel heat supply system with heat storage devices is arranged at the positions of users, heat exchange stations, pipe networks, renewable energy sources, thermal power plants, regional boiler rooms and the like, and the problems of heat supply network delay, unbalanced and insufficient heat source production and user demands are solved by combining heat storage at the user side, the pipe network side and the heat source side, so that heat utilization on demand is finally realized.
The technical scheme is as follows:
a full network distributed heat storage and supply system comprising: the system comprises a heat supply system, a heat storage system, a control system and a control platform, wherein the heat supply system is connected with the heat storage system, the control system is respectively connected with the heat supply system and the heat storage system, and the control platform is connected with the control system; the heat storage system comprises a heat storage tank, an electric shutoff valve, an electric regulating valve and a circulating water pump, wherein a cold water end and a hot water end of the heat storage tank are respectively connected into the heat supply system through the electric shutoff valve, the electric regulating valve and the circulating water pump.
Further, the electric shutoff valve comprises an electric shutoff valve I and an electric shutoff valve II, the electric regulating valve comprises an electric regulating valve I, an electric regulating valve II and an electric regulating valve III, and the circulating water pump comprises a circulating water pump A and a circulating water pump B; the electric regulating valve I is connected with the circulating water pump A in parallel, one end of a parallel loop is connected with the hot water end of the heat storage tank, and the other end of the parallel loop is connected with the electric shutoff valve I; the electric regulating valve II is connected with the circulating water pump B in parallel, one end of a parallel loop is connected with the cold water end of the heat storage tank, and the other end of the parallel loop is connected with the electric shutoff valve II; and one end of the electric regulating valve III is connected with the hot water end, and the other end of the electric regulating valve III is connected with the inlet end of the electric shutoff valve II.
Furthermore, the device also comprises a distributed variable frequency pump, wherein one end of the electric regulating valve III is connected with the hot water end, and the other end of the electric regulating valve III is connected with the inlet end of the electric shutoff valve II through the distributed variable frequency pump.
Further, the shape of the heat storage tank is cylindrical or square.
Furthermore, a safety valve air release port and a steam inlet are arranged at the top of the heat storage tank, and a water distribution disc and a nozzle are arranged in the tank body; the heat storage tank is provided with a heat insulation layer.
Further, the heat-insulating layer uses vacuum heat-insulating plates or aerogel.
Furthermore, the control system is a PLC automatic control cabinet.
The invention also comprises a whole-network distributed heat storage and supply method, wherein the whole-network distributed heat storage and supply system is used, and the heat storage systems are arranged at a user side, a pipe network side and a heat source side.
Further, the heat storage system is directly connected with the primary network and is connected with the heat exchange station for supplying heat, or the heat storage system is indirectly connected with the primary network, and when the heat generated by the heat supply system is more than the load demand of a user end, the heat storage tank stores redundant heat; when the heat supply load of the heat supply system is insufficient, the heat storage tank and the heat supply system supply heat to users together.
Further, the heat source of the heat supply system is one or more of a thermal power plant, a regional boiler room, industrial waste heat, solar energy, wind/photoelectric heating, geothermal energy and a heat pump.
The invention has the beneficial effects that:
the novel heat supply system is characterized in that heat storage devices are arranged at positions of users, heat exchange stations, pipe networks, renewable energy sources, thermal power plants, regional boiler houses and the like, the peak regulation requirement of a heat source is met by combining heat storage at the user side, the pipe network side and the heat source side, the system has the characteristics of small regulation range, closer distance to the users, stronger flexibility and the like, an effective method for using heat as required is realized, the problems of heat network delay, unbalanced and insufficient heat source production and user requirements are solved, and finally the heat as required is realized; when the production capacity of the heat source is excessive, the whole-network distributed heat storage device stores heat, and when the heat source production cannot meet the heat demand of the user, the heat storage device releases heat again and is connected with other heat sources in a grid mode to supply heat to the user.
The thermal power plant stores heat, can realize thermoelectric decoupling, 'peak clipping and valley filling', ensures the high-efficiency production of enterprises, and avoids unnecessary start and stop of peak-shaving heat sources; renewable energy resources store heat, and can be fully utilized for heat supply, so that wind and light abandonment is reduced, and fossil energy consumption is reduced; the heat exchange station and the user side heat accumulation can enhance the real-time response of the heat supply system to the load, and avoid the waste of over-supply.
Drawings
FIG. 1 is a schematic illustration of the thermal energy supply and thermal energy demand of the present invention;
FIG. 2 is an exemplary diagram of a full-network distributed heat storage and supply system according to the present invention;
FIG. 3 is a schematic view showing the basic construction and internal temperature distribution of the heat storage tank of the present invention;
FIG. 4 is a schematic view of a vacuum insulation panel of the present invention;
FIG. 5 is a schematic view of a system for direct connection of a thermal storage tank to a primary network according to the present invention (1);
FIG. 6 is a schematic view of a system for direct connection of a thermal storage tank to a primary network according to the present invention (2);
FIG. 7 is a schematic view of a system for interconnecting a thermal storage tank to a primary network according to the present invention;
FIG. 8 is a schematic diagram of a direct connection control system of an energy storage tank and a primary network according to the present invention;
FIG. 9 is a schematic diagram of an intelligent management and control platform module according to the present invention;
in the figure: 1. electric shutoff valves I and 2, electric regulating valves I and 3, electric regulating valves III and 4, electric regulating valves II and 5, electric shutoff valves II and 6, circulating water pumps A and 7, circulating water pumps B and 8, and a distributed variable frequency pump.
Detailed Description
The whole network distributed heat storage and supply system and method will be further described with reference to fig. 1-9.
A full network distributed heat storage and supply system comprising: the heat supply system is connected with the heat storage system, the control system is respectively connected with the heat supply system and the heat storage system, and the control platform is connected with the heat supply system.
A heat supply system:
the energy structure refers to the composition and proportion relation of various primary energy sources and secondary energy sources in the total energy production or the total energy consumption. Energy sources can be divided into high-grade energy sources and low-grade energy sources according to quality and energy density.
The heating system can meet the requirements by using low-grade energy. At present, heat sources are mainly thermal power plants and regional boiler rooms, and auxiliary heat sources are industrial waste heat, solar energy, wind/photoelectric heating, geothermal energy, heat pumps and the like.
A heat storage system:
the whole network distributed heat storage and supply system can be provided with heat storage devices at a user side, a pipe network side and a heat source side, meets the requirement of peak shaving of the heat source, has the characteristics of small regulation range, closer distance to the user, stronger flexibility and the like, and becomes an effective method for solving the problem of load fluctuation and heat supply delay and realizing heat utilization according to needs.
The whole network distributed heat storage and supply system is shown in figure 2 (the hollow circles represent users and heat exchange stations). The system can be provided with a plurality of heat sources, and the heat sources can be heat sources driven by fossil fuels such as thermal power plants, boiler rooms and the like, and can also be renewable energy sources such as wind power heating, solar photo-thermal, soil sources and the like. The user in the system is a user, and low-grade heat energy or other recoverable heat energy of a sewage source can be provided at the same time to serve as a small distributed heat source.
The heat storage includes water (liquid) heat storage, phase change heat storage and solid heat storage. The solid heat storage is mainly applied to the heat storage of an electric boiler, the phase change heat storage has the problems of corrosion and aging, the manufacturing cost and the technical difficulty of the solid heat storage and the phase change heat storage are higher, and the hot water heat storage device has simple structure, low manufacturing cost, safety and reliability, so that the whole network distributed heat storage and supply system recommends the adoption of a hot water heat storage tank for heat storage.
The hot water heat storage tank is divided into a normal pressure type and a pressure-bearing type. When the heat storage temperature is higher than 98 ℃, a pressure-bearing type heat storage tank is generally adopted. Because the pressure-bearing heat storage tank has high initial investment and poor safety, the pressure-bearing heat storage tank is not frequently used in a centralized heating system. The most common form of heat storage in the project is normal pressure heat storage, and in order to avoid evaporation of hot water, the temperature of the hot water is required to be not more than 98 ℃.
The shape of the heat storage tank can be selected from a cylinder and a square.
In view of production and operation, the cylindrical heat storage tank has the advantages of relatively small surface area, less steel consumption, small heat dissipation surface, easy arrangement and higher practicability. The cylindrical heat storage tank, which has the smallest surface area, has an aspect ratio (height to diameter ratio H/D) of 1:1, but should have an aspect ratio of greater than 1.5 for handling, footprint, etc.
The shape of the distributed heat storage tank is selected according to local conditions and is determined according to the general principle of small occupied area and large volume according to the actual situation on site.
The outside of the heat storage tank body is insulated to a certain degree so as to reduce the heat dissipation of the tank body to the outside to the minimum. Fig. 3 shows the basic configuration of the heat storage tank and the approximate temperature distribution in the tank body.
The hot water is stored in the heat storage water tank, the water temperature is different, and the water density is also different. In a sufficiently large container, the hot and cold water of different densities create a stratification of hot water above and cold water below due to gravity. Even if water is in a flowing state, as long as the control on the Reynolds number Re is ensured and the mixing of cold and hot water in the flowing state is reduced as far as possible, a temperature transition layer with a certain thickness, namely a thermocline, can be formed at the cold and hot water interface.
When the heat generated by the heat source is larger than the heat used by the user, the heat storage water tank enters a heat storage state. A heat storage process: high-temperature water enters the tank body through the upper water distribution disc, and low-temperature water with the same volume flows out of the tank body through the lower water distribution disc. In the heat storage process, the thermocline gradually descends from the hot water inlet and finally disappears. At this point, the heat storage process is complete.
When the heat generated by the heat source is less than the heat used by the user, the heat storage water tank enters a heat release state. An exothermic process: due to the external heat demand, the heat stored in the heat storage tank needs to be released. And starting the heat release circulating pump, allowing low-temperature water to enter the tank through the lower water distribution disc, allowing high-temperature water to flow out through the upper water distribution disc to be supplied to a user, gradually moving the thermocline upwards along with the start of a heat release process until the thermocline completely disappears, and finishing the heat release process. At the moment, the heat storage tank is filled with low-temperature water to wait for the next heat storage process.
In order to prevent the water in the heat storage water tank from dissolving oxygen and bring the water into a thermal network to reduce the water quality of the thermal network, nitrogen or steam is generally filled on the liquid level in the heat storage water tank to isolate the water in the heat storage water tank from air.
The heat preservation in the middle of the heat storage tank can adopt vacuum heat preservation, aerogel heat preservation and the like. Improper heat preservation can reduce the heat storage performance of the heat storage tank and even lead to the fact that temperature stratification can not be realized in the heat storage tank. The heat-insulating material at the bottom of the tank is selected from the heat-insulating materials with small heat transfer coefficient and good compressive strength.
(1) Vacuum heat preservation
The vacuum heat-insulating plate is a heat-insulating material with super heat insulation. Because of its extremely low coefficient of heat conductivity, when meeting the same heat preservation technical requirement, it has the advantages of thin thickness, small volume and light weight of the heat preservation layer, and is suitable for the occasions with higher energy saving requirement and larger technical and economic significance requiring the small volume and light weight of the heat preservation material.
At present, the thermal conductivity of general thermal insulation materials is about 0.03W/mK, the thermal conductivity of vacuum thermal insulation panels is about 0.004W/mK, and the thickness is about 20 mm. The appearance of the Vacuum Insulation Panel (VIP) is shown in fig. 4.
(2) Aerogel insulation
Aerogel is a solid form, one of the world's less dense solids. The density was 3 kg per cubic meter. A common aerogel is a silica aerogel. Because of the extremely low density, the current lightest aerogel is only 0.16 milligram per cubic centimeter and is slightly lower than the air density, and because more than 80 percent of the aerogel is air, the aerogel has very good heat insulation effect, and the aerogel with one inch thickness has the heat insulation function equivalent to 20 to 30 pieces of common glass.
The normal-temperature heat conductivity coefficient of the aerogel can reach 0.020W/m.K, and the aerogel is the lowest heat conductivity coefficient in the traditional heat-insulating materials at present. The aerogel thermal insulation material can reach the fire-proof grade A1 standard and the non-combustible grade.
The distributed heat storage tank only acts on a heat supply area (secondary network) covered by the corresponding heat exchange station, is mainly arranged at the heat exchange station, and is convenient to manage and maintain.
The connection mode of the heat storage tank and the primary net is divided into two modes, namely a direct connection mode and an indirect connection mode.
(1) Direct connection mode (electric regulating valve system)
The direct connection of the heat storage tank to the primary mesh is shown in fig. 5.
When the heat storage tank stores heat, the electric shutoff valve I1 and the electric shutoff valve II5 are opened, the electric regulating valve I2 and the circulating water pump B7 are opened, and the circulating water pump A6 and the electric regulating valve II4 are in a closed state. The water supplied by the heat supply network flows through the electric shutoff valve I1 and the electric regulating valve I2 and then is mixed with the return water flowing through the electric regulating valve III3, the water temperature after mixing is 98 ℃, and the mixed water enters the tank body. The cold water at the bottom of the tank body is output from the tank body through a circulating pump B7 and an electric shutoff valve II5, enters a heat supply network water return pipeline and returns to a basic heat source through a heat supply network circulating pump.
When the heat storage tank releases heat, the electric shutoff valve I1 and the electric shutoff valve II5 are opened, the electric regulating valve I2 and the circulating water pump B7 are closed, and the electric regulating valve II4 and the circulating water pump A6 are opened. Part of cold water enters the tank body through an electric shutoff valve II5 and an electric regulating valve II4, and hot water is output out of the tank body through a circulating pump A6 and enters a water supply pipeline of a heat supply network; the other part of cold water enters a basic heat source through a circulating pump and then enters a water supply pipeline of a heat supply network after being heated.
(2) Direct connection (distribution pump system)
As shown in fig. 6, the variable frequency pump comprises a distributed variable frequency pump 8, wherein one end of the electric regulating valve III3 is connected with a hot water end, and the other end of the electric regulating valve III3 is connected with an inlet end of an electric shutoff valve II5 through the distributed variable frequency pump 8.
(3) Indirect connection mode
The indirect connection of the heat storage tank to the primary mesh is shown in fig. 7. In order to avoid the influence of the heat storage tank on the hydraulic working condition of the primary net, the heat storage tank is indirectly connected with the primary net. When the heat generated by the heat source is more than the load demand of the user side, the heat storage tank stores the redundant heat; when the heat supply load of the heat source is insufficient, the heat storage tank and the heat source supply heat to the user together.
The control system comprises:
the design of the distributed heat storage control system is compatible with the original control system, comprehensive utilization and unified planning. In this section, a design principle of a control system is described by taking a common heat storage system of a heat exchange station as an example.
The heat storage tank system and the heat exchange station system are controlled as a complete system, and corresponding control strategies are adopted according to different connection modes. The control principle in the heat storage and release process will be briefly explained as follows:
(1) the set value TE201S of the secondary network determined from the climate compensation curve is used as a condition for starting heat accumulation and heat release. When TE201 > TE201S, the heat storage tank starts to store heat, the control system keeps TE201 near TE201S all the time during the heat storage process, the speed of heat storage is controlled by a water pump B, and the opening degree of an electric control valve 2 is controlled to keep the liquid level of the heat storage tank constant; when TE201< TE201S, the heat storage tank starts to release heat, the control system keeps TE201 near TE201S all the time during heat release, the speed of heat release is controlled by a water pump A, and the opening degree of an electric control valve 4 is controlled to keep the liquid level of the heat storage tank constant. The primary wire flow F101 is kept constant by controlling the opening of the electric control valve 9 during the heat accumulation and release.
(2) The cold and hot water outlet temperature of the heat storage tank is set as a condition for stopping heat storage and heat release. Under the heat storage working condition, when the temperature TE106 of the cold water pipe of the heat storage tank is equal to the temperature TE101 of one network water supply, stopping heat storage; under the heat release working condition, when the temperature TE105 of the hot water pipe of the heat storage tank is equal to the temperature TE104 of the return water of the heat exchanger of the two networks, the heat release is stopped.
The control under the working conditions of heat storage and heat release of the heat storage tank is mutually related to the operation working conditions of the heat supply network and the heat exchange station, and the heat supply system can stably operate by combining with unattended control of the heat exchange station.
A control platform:
the intelligent management and control platform is based on sensing monitoring equipment, takes the Internet of things as a bottom layer technology, takes a system integration means and takes big data analysis as a core, and scientific management and control of the whole-network distributed system heat storage device are realized.
The structure of the intelligent management and control platform is shown in fig. 9.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The utility model provides a whole net distributed heat accumulation heating system which characterized in that includes: the system comprises a heat supply system, a heat storage system, a control system and a control platform, wherein the heat supply system is connected with the heat storage system, the control system is respectively connected with the heat supply system and the heat storage system, and the control platform is connected with the control system; the heat storage system comprises a heat storage tank, an electric shutoff valve, an electric regulating valve and a circulating water pump, wherein a cold water end and a hot water end of the heat storage tank are respectively connected to the heat supply system through the electric shutoff valve, the electric regulating valve and the circulating water pump; the heat storage system is arranged at a user side, a pipe network side, a heat exchange station, a renewable energy source, a thermal power plant and a regional boiler room, the heat storage system is directly connected with a primary network, the heat storage system is connected with the heat exchange station to supply heat, or the heat storage system is indirectly connected with the primary network, and when the heat generated by the heat supply system is more than the load demand of a user side, the heat storage tank stores redundant heat; when the heat supply load of the heat supply system is insufficient, the heat storage tank and the heat supply system supply heat to users together.
2. The grid-wide distributed heat and heat storage system according to claim 1, wherein the electric shutoff valve comprises an electric shutoff valve I (1) and an electric shutoff valve II (5), the electric control valves comprise an electric control valve I (2), an electric control valve II (4) and an electric control valve III (3), and the circulating water pump comprises a circulating water pump a (6) and a circulating water pump B (7); the electric regulating valve I (2) is connected with the circulating water pump A (6) in parallel, one end of a parallel loop is connected with the hot water end of the heat storage tank, and the other end of the parallel loop is connected with the electric shutoff valve I (1); the electric regulating valve II (4) is connected with the circulating water pump B (7) in parallel, one end of a parallel loop is connected with the cold water end of the heat storage tank, and the other end of the parallel loop is connected with the electric shutoff valve II (5); one end of the electric shutoff valve III (3) is connected with the hot water end, and the other end is connected with the inlet end of the electric shutoff valve II (5).
3. The full-network distributed heat storage and supply system according to claim 2, further comprising a distributed variable frequency pump (8), wherein one end of the electric shutoff valve III (3) is connected with the hot water end, and the other end is connected with the inlet end of the electric shutoff valve II (5) through the distributed variable frequency pump (8).
4. The system of claim 1, wherein the thermal storage tank is cylindrical or square in shape.
5. The system of claim 1, wherein the top of the heat storage tank is provided with a relief valve vent and a steam inlet, and the tank is internally provided with a water distribution plate and a nozzle; the heat storage tank is provided with a heat insulation layer.
6. The system of claim 5, wherein the insulation layer is made of vacuum insulation panels or aerogel.
7. The system of claim 1, wherein the control system is a PLC self-control cabinet.
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| CN112146498A (en) * | 2020-05-29 | 2020-12-29 | 国家电投集团科学技术研究院有限公司 | Thermocline control enhanced heat storage device and control method thereof |
| CN112484317B (en) * | 2020-11-02 | 2022-08-26 | 国家电投集团科学技术研究院有限公司 | Heat storage device, heat storage system, and method for controlling heat storage system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204100359U (en) * | 2014-08-13 | 2015-01-14 | 华电电力科学研究院 | A kind of direct hold over system being applied to heat supply network |
| CN106765456A (en) * | 2017-01-17 | 2017-05-31 | 中国计量科学研究院 | A kind of hold over system and timesharing accumulation of heat co-feeding system |
| CN206269214U (en) * | 2016-11-22 | 2017-06-20 | 华电能源股份有限公司富拉尔基发电厂 | A kind of urban heating net with heat-accumulator tank in parallel |
| EP3199884A1 (en) * | 2014-09-26 | 2017-08-02 | Mitsubishi Electric Corporation | Hot-water supply and heating system |
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2018
- 2018-04-28 CN CN201810401753.1A patent/CN108895514B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204100359U (en) * | 2014-08-13 | 2015-01-14 | 华电电力科学研究院 | A kind of direct hold over system being applied to heat supply network |
| EP3199884A1 (en) * | 2014-09-26 | 2017-08-02 | Mitsubishi Electric Corporation | Hot-water supply and heating system |
| CN206269214U (en) * | 2016-11-22 | 2017-06-20 | 华电能源股份有限公司富拉尔基发电厂 | A kind of urban heating net with heat-accumulator tank in parallel |
| CN106765456A (en) * | 2017-01-17 | 2017-05-31 | 中国计量科学研究院 | A kind of hold over system and timesharing accumulation of heat co-feeding system |
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