CN214370486U - Centralized regional energy supply system - Google Patents
Centralized regional energy supply system Download PDFInfo
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- CN214370486U CN214370486U CN202022600278.6U CN202022600278U CN214370486U CN 214370486 U CN214370486 U CN 214370486U CN 202022600278 U CN202022600278 U CN 202022600278U CN 214370486 U CN214370486 U CN 214370486U
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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
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
The utility model discloses a centralized regional energy supply system, belonging to the field of regional energy supply, comprising a regional energy station, a centralized industrial area and a commercial residential area; laying a public medium-low pressure steam pipe network for a centralized industrial area and a commercial residential area, and according to the characteristic that the steam quality required by the commercial residential area is slightly lower than the energy utilization characteristic of the centralized industrial area, the centralized industrial area is distributed at the near end of a regional energy station, and the commercial residential area is distributed at the far end of the regional energy station, so that the resource optimization configuration of a regional energy system is realized; and saturated steam is used for driving a lithium bromide refrigerating unit to refrigerate at a user side, and then chilled water is supplied for peripheral buildings. The system reduces the construction and maintenance cost of laying an independent cold and hot energy supply pipe network, reduces the cold loss caused by long-distance delivery of chilled water, reduces the dependence of users on electric refrigeration in the peak period of use of the air conditioner in summer, balances the energy consumption requirements in the regional energy supply system through the refrigeration cold accumulation and heating heat storage system, and is a peak clipping and valley filling centralized regional energy supply system.
Description
Technical Field
The present invention relates to the field of regional energy supply, and in particular to a centralized regional energy supply system, particularly for planning and designing a regional energy supply system.
Background
In summer, the south of China is hot and high in temperature, and in order to meet the demands of residents and industrial electricity, the country continuously strengthens electric power construction, and the power generation installation is gradually increased year by year. However, during the peak period of power demand, the traditional thermal power, especially the gas-steam combined cycle unit with fast variable load response, is often in low-load operation or forced shutdown, so that the profit of enterprises is continuously reduced, and even the situation that normal operation can be maintained only by loss and government assistance is faced.
The centralized regional heat supply has very high popularization in the north of China, and the heat supply in the south mainly meets the industrial steam demand of production enterprises. The centralized cooling of south summer is very potential energy-conserving research direction, and utility model patent that publication number is CN 207146971U discloses an utilize waste heat steam's long-distance transport pipe network centralized cooling system, has proposed to use the city to concentrate the cooling pipe network and transport cold water to the cold region of using outside ten kilometers after power plant side uses waste heat steam drive lithium bromide unit refrigeration. The utility model discloses a utility model patent with publication number CN104864631B discloses a compound regional heat supply cooling system, has proposed the cooperation that uses big difference in temperature heat exchanger group, ground source heat pump unit and ice cold-storage system, supplies cold and heat for regional interior user through the delivery pipe network. In the research ideas, the lithium bromide unit is arranged at the side of the power plant, and the regional energy supply system is independently paved with a cold and hot energy supply pipe network, so that the construction investment of the pipe network is increased; under summer working conditions, the cooling pipe network needs to convey chilled water in a long distance in a high-temperature environment, and the loss of the cooling capacity of the chilled water is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned not enough that exists among the prior art, and provide a reasonable in design, the perfect regional energy supply method of system, provide regional energy system planning design or extend the heat supply pipe network that peripheral commercial resident energy supply pipeline is cold and hot unification at the regional energy station of labour, it can the end to set up the lithium bromide refrigerating unit and produce the refrigerated water and directly supply with peripheral cold load to use, the user side can set up energy storage and new forms of energy collecting equipment according to the field conditions, be a centralized regional energy supply system who promotes distributed energy system's energy comprehensive utilization.
The utility model provides a technical scheme that above-mentioned problem adopted is: a centralized regional energy supply system is characterized in that the energy supply system comprises a regional energy source station, a centralized industrial area, a commercial residential area and a steam pipe network connected among the regional energy source station and the centralized industrial area, wherein a public medium-low pressure (1.0 MPa pressure level) steam pipe network is laid between the centralized industrial area and the commercial residential area, and the centralized industrial area is distributed at the near end of the regional energy source station and the commercial residential area is distributed at the far end of the regional energy source station according to the characteristic that the steam quality (0.6-0.8 MPa pressure level) required by the commercial residential area is slightly lower than the energy consumption characteristic of the centralized industrial area; the regional energy station provides medium and low pressure steam with the pressure level of 1.0Mpa to a centralized industrial area and a commercial residential area in an energy supply region through the same steam pipe network; in a centralized industrial area, a temperature and pressure reducing device is connected with a steam pipe network, a first flow divider valve and a second flow divider valve, the first flow divider valve is used for realizing the steam flow distribution of a lithium bromide refrigerating unit and an industrial steam process, the lithium bromide refrigerating unit is respectively connected with the first flow divider valve, a cooling tower, an electric refrigerating unit, a cold storage tank and a heat storage tank, the cold storage tank is communicated with a cold user and a hot user and supplies chilled water to the cold user and the hot user, the heat of the heat storage tank is from the lithium bromide refrigerating unit, the industrial steam process and a low-grade heat source of new energy or waste heat, the heat storage tank is communicated with the cold user and the hot user and supplies domestic hot water to the cold user and the hot user, and a water replenishing pump is connected between a water replenishing pipe and the second flow divider valve.
Furthermore, the regional energy station adopts an environment-friendly, efficient and low-carbon gas unit.
Furthermore, by extending the steam pipe network of the centralized industrial area to a newly planned commercial residential area, friendly connection and expansion of the existing regional energy supply system are realized.
Further, the centralized industrial area and the commercial residential area are provided with the distributed refrigeration and cold storage system and the heating and heat storage system according to energy consumption requirements, so that the construction and maintenance cost for laying an independent cold and hot energy supply pipe network is reduced, and the cold loss caused by long-distance chilled water conveying is reduced.
Furthermore, the centralized industrial area mainly takes industrial steam users of medium and low pressure (1.0 MPa pressure level) steam as main materials, and large enterprises with large cold and heat load requirements can also be provided with a refrigeration and cold storage system and a heating and heat storage system.
Furthermore, a solar heat collecting device can be arranged in a region allowed by a roof space in the centralized industrial area and the commercial residential area, and heat is stored in the heat storage tank through a new energy or waste heat collecting pipeline, so that domestic hot water is provided for cold and hot users.
Furthermore, the electric refrigerating unit can mainly refrigerate by the lithium bromide refrigerating unit during peak-to-valley electricity price difference, and the electric refrigerating unit is used as peak regulation equipment for standby; during the valley electricity period, the refrigeration of the electric refrigerating unit is mainly used.
Furthermore, for better matching of heat supply pipe network parameters and higher energy efficiency level, the lithium bromide refrigerating unit adopts a steam double-effect type lithium bromide refrigerating unit.
Furthermore, the temperature and pressure reduction device participates in adjusting steam parameters to meet the operating conditions of the lithium bromide refrigerating unit when the steam pipe network parameters are higher than the allowable parameters of the lithium bromide refrigerating unit.
Compared with the prior art, the utility model, have following advantage and effect:
1. the utility model discloses according to the steam quality of commercial residential area demand slightly less than the energy consumption characteristics of concentrated industrial area, make concentrated industrial area overall arrangement near regional energy station, commercial residential area overall arrangement is at regional energy station distal end, has realized regional energy system's resource optimal allocation;
2. the utility model can realize friendly connection and expansion of the existing regional energy supply system, only comprises the energy station and the regional energy supply system of the centralized industrial area, and can extend the steam pipe network to the newly planned commercial residential area;
3. the utility model adopts a medium and low pressure (1.0 Mpa pressure grade) steam pipe network which is common in the centralized industrial area and the commercial residential area, and a distributed refrigeration and cold accumulation system and a heating and heat accumulation system are arranged at the user side according to the energy consumption requirement, thereby reducing the construction and maintenance cost of laying an independent cold and hot energy supply pipe network, and reducing the cold loss caused by long-distance chilled water delivery;
4. the utility model discloses having extended system's heat load, can effectively promoting the power generation load of regional energy station, it is undulant to reduce the load of regional energy station, improves the profit level of regional energy station, through refrigeration cold-storage system and heat storage system, has balanced the energy demand in the regional energy supply system, is a centralized regional energy supply system that the millet was filled out in the peak clipping.
Drawings
Fig. 1 is a schematic layout diagram of the area energy supply system of the present invention.
Fig. 2 is the structural schematic diagram of the energy supply system in the large centralized industrial area.
Fig. 3 is a schematic diagram of the energy supply system of the commercial residential area of the present invention.
In the figure: the system comprises a regional energy station 1, a centralized industrial area 2, a commercial residential area 3, a steam pipe network 4, a temperature and pressure reduction device 5, a first flow divider 6, a lithium bromide refrigerating unit 7, a cooling tower 8, an electric refrigerating unit 9, a cold accumulation tank 10, a cold user 11, a cold and hot user 12, a hot user 13, a heat accumulation tank 14, industrial steam 15, new energy or waste heat 16, a second flow divider 17, a water replenishing pump 18 and a water replenishing pipe 19.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Example 1.
Layout of a zone powered system.
The embodiment discloses a centralized regional energy supply system (hereinafter referred to as the system), which aims at different energy consumption requirements of a centralized industrial area 2 and a commercial residential area 3 in the regional energy supply system, utilizes a medium-low pressure heat supply pipe network with the same parameter level to supply heat to the centralized industrial area 2 and the commercial residential area 3 in the region, and uses a lithium bromide refrigerating unit 7 to refrigerate and supply cold to peripheral users at a user side.
Referring to fig. 1, the system includes regional energy stations 1, a centralized industrial area 2, a commercial residential area 3, and a steam pipe network connected therebetween. The regional energy station 1 provides medium and low pressure (1.0 Mpa pressure level) industrial steam to the centralized industrial area 2 and the residential area 3 of the commercial district through a heat supply pipe network.
In this embodiment, the regional energy station 1 is a comprehensive energy system that provides energy forms such as cooling, heating, and power to a planned region.
Preferably, the regional energy station 1 selects an environment-friendly, efficient and low-carbon gas turbine set.
In this embodiment, the steam parameters supplied to the central industrial area 2 are medium and low pressure steam at a pressure level of 1.0Mpa, with three triangles in fig. 1 representing different steam users in the central industrial area 2 and three squares representing different steam users in the commercial residential area 3.
In this embodiment, according to the characteristic that the steam quality required by the commercial residential area 3 is slightly lower than the energy consumption of the centralized industrial area 2, the centralized industrial area 2 is arranged at the near end of the regional energy source station 1, and the commercial residential area 3 is arranged at the far end of the regional energy source station 1, so that the resource optimization configuration of the regional energy system is realized, and compared with the respective construction of cold and hot pipe networks, the construction investment of an energy supply pipe network is reduced.
Example 2.
Large centralized industrial area 2 energy supply system.
The embodiment discloses a large centralized industrial area 2 energy supply system (hereinafter referred to as the system), which aims at the energy utilization requirement of the large centralized industrial area 2 of a regional energy supply system, provides medium-pressure steam with the pressure grade of 1.0MPa for industrial users, and is provided with a refrigerating and cold-storage device and a heating and heat-storage device for the industrial users with a large amount of cold and heat load requirements.
Referring to fig. 2, the system comprises a steam pipe network 4, a temperature and pressure reducing device 5, a first flow divider 6, a lithium bromide refrigerating unit 7, a cooling tower 8, an electric refrigerating unit 9, a cold accumulation tank 10, a cold user 11, a cold and hot user 12, a hot user 13, a heat accumulation tank 14, industrial steam 15, new energy or waste heat 16, a second flow divider 17, a water replenishing pump 18 and a water replenishing pipe 19; the temperature and pressure reducing device 5 is connected with a steam pipe network 4, a first flow divider 6 and a second flow divider 17, the first flow divider 6 realizes the steam flow distribution of a lithium bromide refrigerating unit 7 and an industrial steam 15 process, the lithium bromide refrigerating unit 7 is respectively connected with the first flow divider 6, a cooling tower 8, an electric refrigerating unit 9, a cold accumulation tank 10 and a heat accumulation tank 14, the cold accumulation tank 10 supplies chilled water to a cold user 11 and a cold user 12, the heat of the heat accumulation tank 14 comes from the lithium bromide refrigerating unit 7, the industrial steam 15 process and a new energy source or a low-grade heat source of waste heat 16, the heat accumulation tank 14 supplies domestic hot water to the cold user 12 and the hot user 13, and a water replenishing pump 18 is connected between a water replenishing pipe 19 and the second flow divider 17.
Specifically, the system realizes the matching of the industrial steam 15 process of a large-scale centralized industrial area 2 user and the parameters of the lithium bromide refrigerating unit 7 through the temperature and pressure reducing device 5, realizes the refrigeration and cold accumulation by the lithium bromide refrigerating unit 7, the electric refrigerating unit 9 and the cold accumulation tank 10 at the user side of the centralized industrial area 2, and provides cold loads for a cold user 11 and a cold and hot user 12 of the large-scale centralized industrial area 2; the low grade waste heat generated by the process of industrial steam 15, the lithium bromide refrigeration unit 7 and the new energy or waste heat 16 is stored in the heat storage tank 14 to provide heat load for the hot and cold users 12 and the hot users 13 of the large centralized industrial area 2.
Preferably, the lithium bromide refrigerator group 7, the electric refrigerator group 9 and the cold accumulation tank 10 are used when the concentrated industrial area 2 has a large cooling load, and the conventional refrigeration method can be considered for a small-scale industrial area.
In this embodiment, the steam temperature after the process of the industrial steam 15 varies depending on the process flow, and the waste heat is recovered and stored in the heat storage tank 14.
Preferably, a solar heat collection device is arranged in the centralized industrial area 2 allowed by the roof space of the factory building, and some production processes also generate waste heat, and the heat is stored in the heat storage tank 14 through a new energy source or a collection pipeline of the waste heat 16.
In this embodiment, a part of the flow of the second flow divider 17 is led to the temperature and pressure reducing device 5 to provide the temperature and pressure reducing water to the temperature and pressure reducing device 5.
In this embodiment, if the hot user 13 is a domestic hot water consumption type user such as a hotel, hot water can be consumed at the user side to form open-loop flow; if the heating user is in need, the return water is led to the water replenishing pump 18 to form closed-loop flow.
Example 3.
Commercial residential 3 energy supply system architecture.
The embodiment discloses a commercial residential area 3 energy supply system (hereinafter referred to as the system), which aims at the energy utilization requirements of commercial residential area 3 users in a regional energy supply system, provides medium-pressure steam with the pressure grade of 0.6-0.8MPa for commercial and residential users, realizes local refrigeration and cold and heat storage at the user side, and provides high-quality cold and heat energy products for the users.
Referring to fig. 3, the system comprises a steam pipe network 4, a temperature and pressure reducing device 5, a lithium bromide refrigerating unit 7, a cooling tower 8, an electric refrigerating unit 9, a cold accumulation tank 10, a cold user 11, a cold and hot user 12, a hot user 13, a heat accumulation tank 14, new energy or waste heat 16, a second flow divider 17, a water replenishing pump 18 and a water replenishing pipe 19; the lithium bromide refrigerating unit 7 is respectively connected with the temperature and pressure reduction device 5, the cooling tower 8, the electric refrigerating unit 9, the cold accumulation tank 10 and the heat accumulation tank 14, the cold accumulation tank 10 supplies chilled water to the cold user 11 and the cold and hot user 12, the heat of the heat accumulation tank 14 comes from the lithium bromide refrigerating unit 7 and a low-grade heat source of new energy or waste heat 16, the heat accumulation tank 14 supplies domestic hot water to the cold and hot user 12 and the hot user 13, and the water replenishing pump 18 is connected between the water replenishing pipe 19 and the second flow dividing valve 17.
Specifically, the system realizes parameter matching of the lithium bromide refrigerating unit 7 through the temperature and pressure reducing device 5, realizes refrigeration and cold accumulation by using the lithium bromide refrigerating unit 7, the electric refrigerating unit 9 and the cold accumulation tank 10, and provides cold load for cold users 11 and cold and hot users 12 in the commercial residential area 3; the low-grade waste heat generated by the lithium bromide refrigerating unit 7 and the new energy or waste heat 16 is stored in the heat storage tank 14 to provide heat load for the hot and cold users 12 and the hot users 13 in the commercial residential area 3.
Preferably, the lithium bromide refrigerator group 7, the electric refrigerator group 9 and the cold storage tank 10 are used when the commercial residential area 3 has a large cooling load, and the conventional cooling method can be considered for a small-scale commercial residential area 3.
Preferably, a solar energy collection device is provided in the commercial residential area 3 allowed by the roof space of the plant, and heat is stored in the heat storage tank 14 through a new energy source or a collection pipeline of waste heat 16.
In this embodiment, a part of the flow of the second flow divider 17 is led to the temperature and pressure reducing device 5 to provide the temperature and pressure reducing water to the temperature and pressure reducing device 5.
In this embodiment, if the hot user 13 is a domestic hot water consumption type user such as a hotel, hot water can be consumed at the user side to form open-loop flow; if the heating user is in need, the return water is led to the water replenishing pump 18 to form closed-loop flow.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (4)
1. A centralized regional energy supply system is characterized by comprising a regional energy station (1), a centralized industrial area (2) and a commercial residential area (3), wherein the centralized industrial area (2) is connected with the regional energy station (1), a public medium-low pressure steam pipe network is laid between the centralized industrial area (2) and the commercial residential area (3), the centralized industrial area (2) is arranged at the near end of the regional energy station (1), and the commercial residential area (3) is arranged at the far end of the regional energy station (1); in concentrated industrial area (2), attemperation and pressure reduction device (5) connects steam pipe network (4), flow divider valve (6) and flow divider valve (17) No. two, and lithium bromide refrigerating unit (7) link to each other with flow divider valve (6), cooling tower (8), electric refrigerating unit (9), cold-storage jar (10) and heat accumulation jar (14) respectively, cold-storage jar (10) communicate to cold user (11) and cold and hot user (12), heat accumulation jar (14) are connected with lithium bromide refrigerating unit (7), industrial steam (15) and new forms of energy or waste heat (16) respectively, heat accumulation jar (14) communicate to cold and hot user (12) and hot user (13), and moisturizing pump (18) are connected between moisturizing pipe (19) and flow divider valve (17) No. two.
2. A centralized regional energy supply system according to claim 1, characterized in that the regional energy stations (1) use environmentally friendly, high efficiency, low carbon gas turbines.
3. A centralized regional energy supply system according to claim 1, characterized in that the centralized industrial areas (2) and commercial residential areas (3) are provided with solar heat collection devices in areas where roof space is allowed.
4. A centralized regional energy supply system as in claim 1 wherein the lithium bromide refrigeration units (7) are of the steam double effect type.
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| CN202022600278.6U CN214370486U (en) | 2020-11-11 | 2020-11-11 | Centralized regional energy supply system |
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| CN202022600278.6U CN214370486U (en) | 2020-11-11 | 2020-11-11 | Centralized regional energy supply system |
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