CN206094696U - Big difference in temperature regional cold supply system in multipotency source - Google Patents
Big difference in temperature regional cold supply system in multipotency source Download PDFInfo
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- CN206094696U CN206094696U CN201621108551.0U CN201621108551U CN206094696U CN 206094696 U CN206094696 U CN 206094696U CN 201621108551 U CN201621108551 U CN 201621108551U CN 206094696 U CN206094696 U CN 206094696U
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Abstract
The utility model discloses a big difference in temperature regional cold supply system in multipotency source, including cold supply station, transport pipe network and user side, the cold supply station includes refrigerating system, storage system, water knockout drum and water collector, refrigerating system's machine carries absorptive water chilling set and carries the centrifugal chiller series connection with the machine, and the machine carries the absorptive water chilling set import and returns water piping connection with cistern and water collector refrigerated water respectively through the valve, and the machine carries the centrifugal chiller export and supplies water piping connection with cistern and water knockout drum refrigerated water respectively through the valve, the cistern import is carried the centrifugal chiller export with the machine respectively through the valve and is traded the cold junction exit linkage with retaining cooling board, and the cistern export is carried the absorptive water chilling set import with the machine respectively through the valve and is traded the cold junction access connection with retaining cooling board, the utility model discloses but the waste heat refrigeration can be used to the multiple energy of make full use of, realizes energy cascade utilization, promotes the primary energy utilization ratio.
Description
Technical field
This utility model is related to Regional Energy cold, heat and electricity triple supply technical field, more particularly to a kind of big temperature difference area of multiple-energy-source
Domain cold supply system.
Background technology
District cooling is to provide chilled water to the cold unit of a range of need using the large-scale cold supply station of concentrated setting
Cooling mode.It is a government utility as tap water, electric power, coal gas, is one of the infrastructure in city, due to it
In the advantage of the aspects such as energy-saving and emission-reduction, environmental conservation and operational management so as to obtained widely in countries and regions such as America and Europes
Development.And in recent years, the city such as China Beijing, Guangzhou, Shanghai, Chongqing, Shaoxing also has many regional cold supply systems to throw in succession
Enter to use, meet the requirement that people increasingly improve to quality of the life.District cooling (energy) system is flourishing in developed country
The mark in area.
Cold, heat and electricity triple supply is referred to by fuel of natural gas realizes centrally connected power supply, cooling, heat supply.Idiographic flow is sent out for combustion gas
Electric equipment produces power supply, and the waste heat that system is discharged after generating electricity passes through waste heat recovery utilizing equipment (waste heat boiler or absorption
Formula refrigeration unit etc.) to user's heat supply, cooling.Cold, heat and electricity triple supply is the cascade utilization to the energy, is greatly improved whole system
The primary energy ratio of system, while solving residual heat of electric power plant emission problem, whole system economic well-being of workers and staff and efficiency accordingly increase.
District cooling primary disadvantage is that cold water fed distance increases by three brought problems：Conveying energy consumption is high；Pipe network
Investment is big；The refrigerating loss of pipe network is more.Conveying energy consumption and pipe network investment are relevant with backwater amount is supplied, pipe network refrigerating loss and supply backwater temperature difference
It is relevant, it is semen donors for backwater amount and supply backwater temperature difference product.Thus supply backwater temperature difference is improved, reduction becomes solution for backwater amount
Certainly cold water conveying energy consumption is high invests big main method with pipe network, while the reduction of conveying energy consumption can further expand cooling half
Footpath, improves semen donors, lifts economic benefit.
The conventional cooling main frame that cold, heat and electricity triple supply is taken is to drive steam type by driving heat source of steam turbine pumping
Lithium bromide absorption refrigerating set, cooling temperature is generally 7 DEG C -12 DEG C.But there is problems with this cooling mode：Due to
The restriction of BrLi chiller self character, the minimum supply water temperature of cold water can only achieve 7 DEG C.Big temperature difference cooling can not be realized
And cold air distribution, the distance limit of central cooling is larger, in addition, institute less only 5 DEG C (7 DEG C -12 DEG C) because of the temperature difference of cooling
Larger with the caliber for requiring cooling pipe network, pipe network initial cost is larger.Absorption installation own efficiency is relatively low.
District cooling often combines ice cold-storage and Water cold storage technology, using Double-working-condition refrigeration host computer, daytime cooling, night ice making
Or cold water.Using the peak valley price differential of electric power, economic benefit is lifted, while peak load shifting, alleviates net capacity.
Utility model content
This utility model aims to overcome that the problem that prior art is present, there is provided one kind reduces the conveying water yield and energy consumption,
Utilization ratio of the energy is lifted, cold station electricity consumption, the big temperature difference regional cold supply system of the high multiple-energy-source of reliability is reduced.
The purpose of this utility model is achieved through the following technical solutions：
A kind of big temperature difference regional cold supply system of multiple-energy-source, including cold supply station, transmission pipeline network and user side；User side is comprising more
Individual user, the cold supply station connects user side by the transmission pipeline network；The cold supply station include refrigeration system, energy-storage system,
Water knockout drum and water collector；Refrigeration system is mainly by airborne absorption chiller, airborne centrifugal refrigerating machines, first absorption
Handpiece Water Chilling Units, centrifugal refrigerating machines, the second absorption chiller, Double-working-condition centrifugal refrigerating machines, Double-working-condition supply cold drawing
Change composition；Energy-storage system is mainly made up of chilled water storage system with ice-storage system；Chilled water storage system is supplied comprising cistern and water-retention
Cold drawing is changed；Ice-storage system is changed comprising ice bank and ice-melt for cold drawing；
The airborne absorption chiller and airborne centrifugal refrigerating machines are connected in series, airborne absorption chiller
Import is connected respectively by valve with cistern and water collector chilled water return pipe, and airborne centrifugal refrigerating machines outlet passes through valve
Door is connected respectively with cistern and water knockout drum chilled water feed pipe；Cistern import by valve respectively with airborne centrifugal cold water
Machine set outlet and water-retention change cold side outlet connection for cold drawing, cistern outlet by valve respectively with airborne absorption chiller
Import and water-retention change cold side inlet connection for cold drawing；
First absorption chiller and centrifugal refrigerating machines are connected in series, the first absorption chiller import
Connection water collector chilled water return pipe, centrifugal refrigerating machines outlet connection water knockout drum chilled water feed pipe；
Second absorption chiller and Double-working-condition centrifugal refrigerating machines change connection by Double-working-condition for cold drawing；The
Two absorption chiller imports connect water collector chilled water return pipe, and outlet connection Double-working-condition supplies cold drawing heat-exchange end import；It is double
The import of operating mode centrifugal refrigerating machines changes cold side outlet and ice bank cold-producing medium backwater with Double-working-condition for cold drawing respectively by valve
Pipe connects, and outlet changes cold side inlet for cold drawing with Double-working-condition respectively by valve and ice bank cold-producing medium feed pipe is connected；Duplex
Condition is connected respectively by valve for cold drawing heat-exchange end entrance with the outlet of the second absorption chiller and water collector chilled water return pipe
Connect, hot junction outlet is connected with water knockout drum chilled water feed pipe；Ice bank is changed for cold drawing by ice-melt and connected with water knockout drum and water collector
Connect；Water knockout drum and water collector are connected respectively with outside ductwork.
Further to realize the object of the invention, it is preferable that the airborne absorption chiller, the first absorption cooling-water machine
Group and the second absorption chiller select steam absorption handpiece Water Chilling Units.
Preferably, the airborne centrifugal refrigerating machines and centrifugal refrigerating machines from YKKCK4H95CWG,
YKR4R2K45DJG, YKZSZQK75DLG type handpiece Water Chilling Units.
Preferably, the Double-working-condition centrifugal refrigerating machines are a kind of by changing compressor pressure ratio operation refrigeration or ice making
The centrifugal refrigerating machines of operating mode.
Preferably, the Double-working-condition is changed for cold drawing, water-retention is changed for cold drawing and ice-melt is changed to cold water plate type heat exchanger for cold drawing.
Preferably, the cistern is insulation catch basin.
Preferably, the ice bank is the insulation Ice Storage Tank for being disposed with Ice storage coiled pipe.
Preferably, the water knockout drum and water collector all distribute for chilled-water flow and can acquisition means.
A kind of big temperature difference regional cold supply system refrigeration plant centralized system of multiple-energy-source of this utility model for chilled water, and by region
Pipe network to user side supplies chilled water；The cold station in region can be freezed using natural cooling source, residual heat of electric power plant and electric power and be combined storage
Refrigeration technique；Cold station, user side are changed by respective plate and separated with transmission pipeline network, ice-storage system using ice-melt plate change with pipe network every
Open, chilled water storage system is changed using water storage board and separated with pipe network, and said system is closed system.Cold station refrigeration system is mainly by three
Individual subsystem composition, including the absorption chiller of tandem working and cold accumulation system, the airborne absorption cold water of tandem working
Unit and centrifugal refrigerating machines, Double-working-condition centrifugal refrigerating machines, water storage system.
During system operation, absorption chiller is connected with ice-storage system, positioned at upstream, beneficial to unit high-efficiency stable
Operation, ice-melt plate replaces and as far as possible drags down chilled water supply water temperature in absorption chiller downstream, to increase supply backwater temperature difference.
Double-working-condition handpiece Water Chilling Units can also be changed by plate and direct out net cooling.To ensure the uninterrupted safe operation of steam pipe system, reduce
Water delivery and compensator action, arrange airborne absorption chiller and series connection electrical chillers are each one, to realize that the big temperature difference is supplied
It is cold, while airborne two grades of water pumps are individually set, beneficial to reduction operation energy consumption.
Cooling scheme can be summarized as：(1) Absorption Refrigerator is connected cooling with electric refrigerating machine；(2) water-retention cooling；(3) it is double
The ice-reserving of operating mode main frame, ice-melt cooling；(4) Absorption Refrigerator is connected cooling with Double-working-condition main frame.Four kinds of cooling technologies are for simultaneously
Through transport row, both can independent cooling or air conditioning.
System conditions are：(1) operating mode one：Airborne Absorption Refrigerator+airborne electric refrigerating machine series connection water-retention or cooling
Operating mode；(2) operating mode two：Cistern water intaking cooling operating mode；(3) operating mode three：Electric refrigerating machine cooling operating mode；(4) operating mode four：It is absorption
Refrigeration machine+Double-working-condition electric refrigerating machine series connection cooling operating mode；(5) operating mode five：Double-working-condition electric refrigerating machine cooling operating mode；(6) operating mode six：
Double-working-condition electric refrigerating machine Xu Yuanzhong；(7) operating mode seven：Ice melting.
Relative to prior art, this utility model has the advantage that：
1) the big temperature difference regional cold supply system of this utility model multiple-energy-source can make full use of various energy resources, can apply waste heat system
It is cold, energy cascade utilization is realized, lift primary energy ratio；
2) this utility model can provide lower chilled water supply water temperature, widen supply backwater temperature difference, reduce chilled water conveying
Amount, so as to reduce conveying energy consumption and pipe diameter, increases Cooling radius.
3) this utility model can increase supply backwater temperature difference, reduce the conveying water yield and energy consumption；
4) this utility model steam substitutes electricity refrigeration, reduces cold station electricity consumption, reduces urban distribution network and powers pressure；
5) this utility model can improve system reliability using the guarantee of electricity, steam and accumulation of energy various energy resources.
Description of the drawings
Fig. 1 is a kind of structural representation of the big temperature difference regional cold supply system of multiple-energy-source of the present utility model；
Fig. 2 is the structural representation of the big temperature-difference refrigerating unit cold supply system shown in Fig. 1.
Illustrate in figure：Cold supply station 1, transmission pipeline network 2, user side 3, first user 31, second user 32, the n-th user 3n, machine
Carry absorption chiller 11, airborne centrifugal refrigerating machines 12, the first absorption chiller 21, centrifugal refrigerating machines
22nd, the second absorption chiller 41, Double-working-condition centrifugal refrigerating machines 42, Double-working-condition change 43, cistern 51, water-retention for cold drawing
52, ice bank 61, ice-melt is changed for cold drawing change 62, water knockout drum 71, water collector 72 for cold drawing.
Specific embodiment
To more fully understand this utility model, this utility model is described further below in conjunction with accompanying drawing, ability
The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
As shown in figure 1, a kind of big temperature difference regional cold supply system of multiple-energy-source includes cold supply station 1, transmission pipeline network 2 and user side 3.
Cold supply station 1 mainly includes refrigeration system 11 and energy-storage system 12；User side includes multiple users, respectively first user 31, the
Two users 32 ... the n-th user 3n；The cold water of the production of the cold supply station 1 delivers to user side 3 by the transmission pipeline network 2.
As shown in Fig. 2 cold supply station 1 includes refrigeration system 11, energy-storage system 12, water knockout drum 71 and water collector 72；Refrigeration system
System is mainly by airborne absorption chiller 11, airborne centrifugal refrigerating machines 12, the first absorption chiller 21, centrifugal
Handpiece Water Chilling Units 22, the second absorption chiller 41, Double-working-condition centrifugal refrigerating machines 42, Double-working-condition change 43 compositions for cold drawing；
Energy-storage system is mainly made up of chilled water storage system with ice-storage system, and chilled water storage system is changed comprising cistern 51 and water-retention for cold drawing
52；Ice-storage system changes 62 comprising ice bank 61 and ice-melt for cold drawing；
Airborne absorption chiller 11 and airborne centrifugal refrigerating machines 12 are connected in series, airborne absorption chiller
11 imports are connected respectively by valve with cistern 51 and the chilled water return pipe of water collector 72, and airborne centrifugal refrigerating machines 12 go out
Mouth is connected respectively by valve with cistern 51 and the chilled water feed pipe of water knockout drum 71；The import of cistern 51 by valve respectively with
Airborne centrifugal refrigerating machines 12 are exported and water-retention changes the connection of 52 cold side outlets for cold drawing, and cistern 51 is exported to be distinguished by valve
52 cold side inlets are changed with the import of airborne absorption chiller 11 and water-retention for cold drawing to be connected；
First absorption chiller 21 and centrifugal refrigerating machines 22 are connected in series, and the first absorption chiller 21 enters
The mouth connection chilled water return pipe of water collector 72, the outlet connection chilled water feed pipe of water knockout drum 71 of centrifugal refrigerating machines 22；
Second absorption chiller 41 and Double-working-condition centrifugal refrigerating machines 42 change 43 connections by Double-working-condition for cold drawing；
The import of second absorption chiller 41 connects the chilled water return pipe of water collector 72, and outlet connection Double-working-condition changes 43 hot junctions for cold drawing
Import；The import of Double-working-condition centrifugal refrigerating machines 42 changes 43 cold side outlets and ice bank with Double-working-condition for cold drawing respectively by valve
61 cold-producing medium return pipes connect, and outlet changes 43 cold side inlets and the cold-producing medium of ice bank 61 with Double-working-condition for cold drawing respectively by valve
Feed pipe connects；Double-working-condition changes 43 hot-side inlets and is exported and collected with the second absorption chiller 41 respectively by valve for cold drawing
The chilled water return pipe of hydrophone 72 connects, and hot junction outlet is connected with the chilled water feed pipe of water knockout drum 71；Ice bank 61 is supplied by ice-melt
Cold drawing changes 62 and is connected with water knockout drum 71 and water collector 72, to exo-melting ice cooling；
Water knockout drum 71 and water collector 72 are connected respectively with outside ductwork；Water knockout drum 71 passes through chilled water two stage pump by refrigeration system
And the chilled water that energy-storage system is produced is delivered to the outside cooling of cooling pipe network, water collector 72 will distribute after the collection of chilled water backwater
To cold station refrigeration system and energy-storage system, complete to supply SAPMAC method.
Vf, Vg, Vo, Vq, Va, Vb, Vc, Vd, Ve, Vi, Vh, Vl and Vm represent valve in Fig. 2.
During system operation, airborne absorption chiller 11 and the airborne centrifugal refrigerating machines 12 of series operation can be by
12 DEG C of chilled water backwater are cooled to 3 DEG C, and 12 DEG C of water temperatures are reduced to 7.5 DEG C by the specifically airborne absorption chiller 11 in upstream,
The downstream machine of series connection carries centrifugal refrigerating machines 12 and further 7.5 DEG C of water temperatures is reduced to into 3 DEG C, and 3 DEG C of freezing water can be conveyed
To the supplying cold directly of water knockout drum 71 or it is delivered to cistern 51 and carries out cold-storage water, cooling and water-retention operating mode Jing valve transfer is born daytime
Lotus peak can run cooling operating mode, and night underload can run water-retention operating mode.
The 3 DEG C of big temperature difference of freezing water runnings of preparation that can connect with the first absorption chiller 21 of centrifugal refrigerating machines 22 are supplied
Cold operating mode, 12 DEG C of water temperatures are reduced to 7.5 DEG C by upstream absorption chiller 21 during series connection cooling, downstream centrifugal refrigerating machines
7.5 DEG C of water temperatures are further reduced to 3 DEG C by 22；Centrifugal refrigerating machines 22 also can alone run 12 DEG C and be cooled to the 3 DEG C big temperature difference
Refrigeration cooling operating mode, with direct cooling condition by valve transfer, steam source can run series connection cooling to series connection cooling when sufficient
Operating mode, can run direct cooling condition during paddy electricity valency.
Double-working-condition centrifugal refrigerating machines 42 can switch air conditioning condition and ice making operating mode by valve group, and refrigerating medium is second two
Alcohol-water solution, cold operation requirement during meeting ice making operating mode.During operation air conditioner refrigerating operating mode, refrigerating medium operating temperature is 6.5
DEG C/1.5 DEG C, now, low temperature refrigerating medium is delivered to Double-working-condition and changes 43 as cold end low-temperature receiver for cold drawing, to cool down Double-working-condition cooling
Plate changes 43 hot junction chilled waters, and Double-working-condition changes 43 hot junction chilled waters for cold drawing to be provided by the second absorption chiller 41
7.5 DEG C of cold water, the 12 DEG C of chilled water backwater directly provided by water collector 72 are provided, this chilled water is originated by valve transfer.
Upstream absorption chiller 41 changes 43 connection downstream Double-working-condition centrifugal refrigerating machines 42, joint fortune by Double-working-condition for cold drawing
The big temperature-difference refrigerating operating mode of row should be main operating condition under high load capacity.Double-working-condition centrifugal refrigerating machines 42 run ice making operating mode
When, cold-producing medium operating temperature is -1.7 DEG C/- 5.6 DEG C, and low-temperature refrigerant is delivered to the ice-reserving of ice bank 61, and ice making operating mode should be at night
Between underload when carry out.
During load peak, the cistern 51 of chilled water storage system can change 52 by water-retention for cold drawing carries out cooling, cistern 51
Cold water operating temperature is 4 DEG C/12 DEG C, and cold-storage and the cooling operating mode of cistern pass through valve transfer；The ice bank of ice-storage system
61 can change 62 by ice-melt for cold drawing carries out cooling, and the cooling cold water operating temperature of ice bank 61 is 1.5 DEG C/6.5 DEG C.
Airborne absorption chiller 11, the first absorption chiller 21 and the second absorption chiller 41 are from steaming
Vapour absorption chiller, three's structure is identical, and airborne restriction is that occupation mode is different.Concrete available double good energy conserving systems
SXZ4-317 (12/7.5) (32/37) H2M2 (11), SXZ4-703 (12/7.5) (32/37) H2M2 of limited company's manufacture
(21), (41) three kinds of models of SXZ4-844 (12/7.5) (32/37) H2M2, its refrigerating capacity be respectively 900RT, 2000RT and
2400RT.Steam absorption handpiece Water Chilling Units are a kind of without electric energy, directly with thermal source as power, produce the central authorities of cold water and warm water
Air-conditioning equipment.Absorption chiller is by vaporizer, absorber, condenser, one or many generators, one or many solution
Heat exchanger and interconnecting tube road and adnexa are constituted, with the solution such as lithium bromide or ammonia as absorbent, with water as cold-producing medium,
Using water, under a high vacuum evaporation endothermic reaches the purpose of refrigeration.The thermal source that it is utilized both can be fuel oil, combustion gas, steam,
Can be the waste heats such as various high-temperature exhaust airs, hot water, or even solar energy and used heat as thermal source.Can be simultaneously on a refrigeration machine
Using various heating sources.When unit works, in vaporizer, cryogenic coolant water absorbs the heat from chilled water, makes chilled water temperature
Reduce, prepare required chilled water；Meanwhile, water as refrigerant flashes to refrigerant vapour.In absorber, lithium bromide concentrated solution absorbs evaporation
Become weak solution in device after refrigerant vapour.Weak solution in the presence of solution pump, after the heat temperature raising of solution heat exchanger,
Finally deliver in generator and heated.In generator, the heating that weak solution passes through high temperature heat source becomes high temperature concentrated solution；Together
When produce substantial amounts of high temperature refrigerant vapour.After weak solution heat exchange of the concentrated solution Jing solution heat exchanger with absorber, into suction
Receive device.Meanwhile, the refrigerant vapour of generation is entered in condenser and is cooled, and becomes cryogenic coolant water.Water as refrigerant is Jing after blood pressure lowering throttling
Into vaporizer, a kind of refrigeration cycle is thus completed.
Airborne centrifugal refrigerating machines 12 and centrifugal refrigerating machines 22 are centrifugal refrigerating machines, specifically in available York
YKKCK4H95CWG (12), YKR4R2K45DJG (22), (42) three kinds of models of YKZSZQK75DLG of centre air-conditioning company manufacture, its
Refrigerating capacity is respectively 900RT, 2000RT and 2400RT, and wherein YKZSZQK75DLG (42) is Double-working-condition centrifugal refrigerating machines.
Centrifugal refrigerating machines kind of refrigeration cycle mainly includes compressor, condenser, throttling arrangement and vaporizer, and cold-producing medium is successively upper
State four big parts and circulation is constituted by interconnecting tube road and adnexa；Centrifugal refrigerating machines are by the use of electricity as power source, refrigeration
Agent is evaporated the heat of absorption refrigerating medium in vaporizer and is freezed, and the moist steam after evaporation endothermic is compressed by the compressor into high temperature
Gases at high pressure, become liquid after water cooled condenser condensation, expanded valve throttling enters vaporizer recirculation.The two of vaporizer
It is terminated with freezing water circulation system, cold-producing medium here absorbs heat reduces chilled water temperature, and so as to produce chilled water air-conditioning is supplied
End uses.And condenser takes heat to cooling tower and discharges by cooling water system.Double-working-condition centrifugal refrigerating machines 42 are
It is a kind of by change compressor pressure ratio so as to run refrigeration or ice making operating mode centrifugal refrigerating machines, under two kinds of operating modes, refrigeration
Agent out temperature is different.
Double-working-condition for cold drawing change 43, water-retention for cold drawing change 52 and ice-melt change 62 for cold water plate type heat exchanger for cold drawing, three
Structure is identical, and heat transferring medium is different；Water-retention changes 52 for water-water heat exchange for cold drawing, and Double-working-condition changes 43 and ice-melt confession for cold drawing
Cold drawing changes 62 and is water-ethylene glycol solution heat exchange.The TL35-BFG of concrete optional Alfa Laval Technology Co., Ltd. manufacture
(43), MX25-BFGS (52), (62) three kinds of models of T35-PFG, its heat exchange amount is respectively 1000RT, 2000RT and 2400RT.Plate
Formula heat exchanger is by a series of a kind of high-performance heat exchanger of sheet metal closed assemblies with certain bellows-shaped.Various plates it
Between formed thin rectangular shape passage, heat exchange is carried out by plate.
Cistern 51 is the catch basin with waterproof thermal-insulated measure that armored concrete is built, using certainly in present embodiment
The freezing water that so prepared by layering Cool Storage Technology storage night airborne handpiece Water Chilling Units is used for daytime, and cold storage capacity is 1000RT/
h.Natural layering cold-storage makes the cold water that temperature is 4～6 DEG C be gathered in cistern bottom using the physical characteristics of water, and 10～18
DEG C hot water be gathered in cistern top naturally, so as to realize hot and cold water natural layering.
Ice bank 61 is the Ice Storage Tank with waterproof thermal-insulated measure for being disposed with Ice storage coiled pipe, and present embodiment is adopted melts outward
Ice technology, ice-reserving and cooling are realized by the icing of the outer water of Ice storage coiled pipe with deicing processes, and ice storage amount is 4000RT/h.Ice cold-storage
It is to be stored in ice storage unit using night trough load power ice making, ice-melt on daytime discharges stored cold, reduces
Electrical network peak period air conditioning electricity load and air conditioning system installed capacity, it makes use of the heat of transformation of water, thus efficiency is higher.
Water knockout drum 71 and water collector 72 are that chilled-water flow distributes and meeting acquisition means, and equipment is customization pressure vessel.Point
Hydrophone be the water inlet of multichannel freezing water is collected after be separated into the equipment that several roads output supply chilled waters supply water, and water collector is
The water inlet of multichannel high temperature chilled water is collected the equipment for exporting supply chilled water backwater on several roads.Structure is by being responsible for, branch
Equipped with manhole or hand hole on the cylinder that the composition such as pipe, sewage draining exit, air vent, pressure gauge, thermometer is relatively large in diameter, material is by carbon steel
Coiled sheet system, or seamless steel pipe is made, and can bear certain pressure, belongs to pressure container type specialty manufacture, outer surface does anti-corrosion
Or isothermal holding.
This utility model realizes big temperature difference cooling major way, there is following seven kinds：
(1) airborne absorption chiller 11 and the series operation cooling of airborne centrifugal refrigerating machines 12, upstream is absorption
12 DEG C of chilled water backwater are reduced to 7.5 DEG C by handpiece Water Chilling Units 11, and downstream centrifugal refrigerating machines 12 continue to reduce in 7.5 DEG C of cold water
To 3 DEG C, airborne purpose is arranged to meet system minimum load；
(2) first absorption chillers 21 and the series operation cooling of centrifugal refrigerating machines 22, the first absorption of upstream
12 DEG C of chilled water backwater are reduced to 7.5 DEG C by formula handpiece Water Chilling Units 21, and downstream centrifugal refrigerating machines 22 continue to drop in 7.5 DEG C of cold water
As little as 3 DEG C, it is therefore intended that make system use energy variation, improve system reliability；
(3) second absorption chillers 41 and the series operation of Double-working-condition centrifugal refrigerating machines 42, are supplied by Double-working-condition
Cold drawing changes 43 and carries out cooling.12 DEG C of chilled water backwater are reduced to 7.5 DEG C by the second absorption chiller 41, and Double-working-condition is centrifugal
Handpiece Water Chilling Units 42 run cooling condition, there is provided 1.5 DEG C/6.5 DEG C low temperature refrigerating mediums, and changing 43 continuation for cold drawing by Double-working-condition will
7.5 DEG C of chilled water backwater are reduced to 3 DEG C；
(4) the Jing water-retentions of chilled water storage system cistern 51 are changed 52 12 DEG C of chilled water backwater are reduced to into 4 DEG C and supplied for cold drawing
It is cold；
(5) directly 3 DEG C/12 DEG C cooling conditions of operation carry out cooling to centrifugal refrigerating machines 22；
(6) operation of Double-working-condition centrifugal refrigerating machines 42 cooling condition, Jing Double-working-conditions change 43 directly 12 DEG C of coolings for cold drawing
Chilled water backwater, producing 3 DEG C of chilled waters water supply carries out cooling；
(7) ice-melt is changed 62 and directly 12 DEG C of backwater is cooled to into 3 DEG C for cold drawing.
In above refrigeration system and energy-storage system running, big temperature difference operating temperature is 3 DEG C/12 DEG C, it is considered in cold station
The factor such as portion and pipe network refrigerating loss, 4 DEG C/12 DEG C of big temperature difference district cooling when final achievable pipe network is delivered to user side.
In the present embodiment, the kW of maximum sharpness cooling ability 8.1 ten thousand (2.1 ten thousand RT), the big temperature difference district cooling system of multiple-energy-source
Under unified central planning to put, airborne absorption chiller 11 is connected with airborne centrifugal refrigerating machines 21 cold supply system, first absorption cold
Water dispenser group 21 is connected cold supply system, the second absorption refrigeration unit 41 and Double-working-condition handpiece Water Chilling Units 42 with centrifugal refrigerating machines 22
Series connection cold supply system, chilled water storage system (changing 52 for cold drawing comprising cistern 51 and water-retention), ice-storage system are (comprising ice bank 61
And 62) ice-melt changes for cold drawing, each cold supply system semen donors accounting be respectively 4.76%, 14.29%, 57.14%, 4.76% and
19.05%.Transmission pipeline network adopts three roads always to supply cold water pipe caliber for the branched network of DN900, and service building area about 3,400,000 is flat
Square rice.
As can be seen that the big temperature difference regional cold supply system of the multiple-energy-source of this utility model embodiment, can make full use of power plant to steam
Vapour waste heat and energy-storage system, while reducing electrical chillers operational difference, lift system efficiency.Utilizing many with reference to energy-storage system
The sample energy simultaneously, increases conveying supply backwater temperature difference, significant increase refrigeration distance, and technique is relatively simple, realize being relatively easy to,
And the transmission ＆ distribution energy consumption of chilled water conveying system can be effectively reduced, the supply water yield of chilled water system is reduced, water resource is reduced
Consumption, while the scale of chilled water subsystem can be reduced.Energy-storage system can further peak load shifting, reduce municipal electric power
Load, while using time-of-use tariffs, lifting economy.
The big temperature difference regional cold supply system of multiple-energy-source of the present utility model, can make full use of various energy resources, lift primary energy
Utilization rate, and lower chilled water supply water temperature can be provided, supply backwater temperature difference is widened, freezing pumped water flow rate is reduced, so as to reduce
Conveying energy consumption and pipe diameter, while the scale of chilled water subsystem can be reduced, increase Cooling radius.
Embodiment is not to be construed as limiting the scope of the invention；What every utilization this specification and accompanying drawing content were done
Equivalent structure, flow process are extracted or equivalent flow conversion, are included within this utility model protection domain.
Claims (8)
1. the big temperature difference regional cold supply system of a kind of multiple-energy-source, including cold supply station, transmission pipeline network and user side；User side is comprising multiple
User, the cold supply station connects user side by the transmission pipeline network；Characterized in that, the cold supply station include refrigeration system,
Energy-storage system, water knockout drum and water collector；Refrigeration system mainly by airborne absorption chiller, airborne centrifugal refrigerating machines,
It is first absorption chiller, centrifugal refrigerating machines, the second absorption chiller, Double-working-condition centrifugal refrigerating machines, double
Operating mode changes composition for cold drawing；Energy-storage system is mainly made up of chilled water storage system with ice-storage system；Chilled water storage system includes water-retention
Pond and water-retention are changed for cold drawing；Ice-storage system is changed comprising ice bank and ice-melt for cold drawing；
The airborne absorption chiller and airborne centrifugal refrigerating machines are connected in series, airborne absorption chiller import
It is connected with cistern and water collector chilled water return pipe respectively by valve, airborne centrifugal refrigerating machines outlet is by valve point
It is not connected with cistern and water knockout drum chilled water feed pipe；Cistern import by valve respectively with airborne centrifugal refrigerating machines
Outlet and water-retention for cold drawing change cold side outlet connection, cistern outlet by valve respectively with airborne absorption chiller import
Cold side inlet connection is changed with water-retention for cold drawing；
First absorption chiller and centrifugal refrigerating machines are connected in series, the first absorption chiller import connection
Water collector chilled water return pipe, centrifugal refrigerating machines outlet connection water knockout drum chilled water feed pipe；
Second absorption chiller and Double-working-condition centrifugal refrigerating machines change connection by Double-working-condition for cold drawing；Second inhales
The import of receipts formula handpiece Water Chilling Units connects water collector chilled water return pipe, and outlet connection Double-working-condition supplies cold drawing heat-exchange end import；Double-working-condition
Centrifugal refrigerating machines import changes cold side outlet for cold drawing with Double-working-condition respectively by valve and ice bank cold-producing medium return pipe connects
Connect, outlet changes cold side inlet for cold drawing with Double-working-condition respectively by valve and ice bank cold-producing medium feed pipe is connected；Double-working-condition is supplied
Cold drawing heat exchange end entrance is connected respectively by valve with the outlet of the second absorption chiller and water collector chilled water return pipe, heat
Bring out mouth to be connected with water knockout drum chilled water feed pipe；Ice bank is changed for cold drawing by ice-melt and is connected with water knockout drum and water collector；Point
Hydrophone and water collector are connected respectively with outside ductwork.
2. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that described airborne absorption cold
Water dispenser group, the first absorption chiller and the second absorption chiller select steam absorption handpiece Water Chilling Units.
3. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that described airborne centrifugal cold
Water dispenser group and centrifugal refrigerating machines select YKKCK4H95CWG, YKR4R2K45DJG, YKZSZQK75DLG type handpiece Water Chilling Units.
4. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that the Double-working-condition is centrifugal
Handpiece Water Chilling Units are a kind of centrifugal refrigerating machines by changing compressor pressure ratio operation refrigeration or ice making operating mode.
5. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that the Double-working-condition supplies cold drawing
Change, water-retention is changed for cold drawing and ice-melt is changed to cold water plate type heat exchanger for cold drawing.
6. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that the cistern is insulation
Catch basin.
7. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that the ice bank is arrangement
There is the insulation Ice Storage Tank of Ice storage coiled pipe.
8. the big temperature difference regional cold supply system of multiple-energy-source according to claim 1, it is characterised in that the water knockout drum and catchment
Device all distributes for chilled-water flow and can acquisition means.
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| CN201621108551.0U CN206094696U (en) | 2016-10-08 | 2016-10-08 | Big difference in temperature regional cold supply system in multipotency source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621108551.0U CN206094696U (en) | 2016-10-08 | 2016-10-08 | Big difference in temperature regional cold supply system in multipotency source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288577A (en) * | 2016-10-08 | 2017-01-04 | 华南理工大学建筑设计研究院 | A kind of multiple-energy-source big temperature difference district cooling device |
| CN107764122A (en) * | 2017-11-20 | 2018-03-06 | 济南热力集团有限公司 | A kind of big temperature difference cold water combined type gradient utilization system based on UTILIZATION OF VESIDUAL HEAT IN |
| CN110848840A (en) * | 2019-11-06 | 2020-02-28 | 珠海新源热力有限公司 | Regional cooling system and water supply temperature optimization method |
| CN113606813A (en) * | 2021-07-02 | 2021-11-05 | 华电电力科学研究院有限公司 | Method for realizing large-temperature-difference cold supply and cold accumulation based on waste heat utilization of gas internal combustion engine |
-
2016
- 2016-10-08 CN CN201621108551.0U patent/CN206094696U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288577A (en) * | 2016-10-08 | 2017-01-04 | 华南理工大学建筑设计研究院 | A kind of multiple-energy-source big temperature difference district cooling device |
| CN106288577B (en) * | 2016-10-08 | 2022-05-03 | 华南理工大学建筑设计研究院有限公司 | Multi-energy large-temperature-difference area cooling device |
| CN107764122A (en) * | 2017-11-20 | 2018-03-06 | 济南热力集团有限公司 | A kind of big temperature difference cold water combined type gradient utilization system based on UTILIZATION OF VESIDUAL HEAT IN |
| CN107764122B (en) * | 2017-11-20 | 2023-09-22 | 济南热力集团有限公司 | Large-temperature-difference cold water combined type cascade utilization system based on waste heat utilization |
| CN110848840A (en) * | 2019-11-06 | 2020-02-28 | 珠海新源热力有限公司 | Regional cooling system and water supply temperature optimization method |
| CN110848840B (en) * | 2019-11-06 | 2024-05-24 | 珠海新源热力有限公司 | Regional cooling system and water supply temperature optimization method |
| CN113606813A (en) * | 2021-07-02 | 2021-11-05 | 华电电力科学研究院有限公司 | Method for realizing large-temperature-difference cold supply and cold accumulation based on waste heat utilization of gas internal combustion engine |
| CN113606813B (en) * | 2021-07-02 | 2023-02-24 | 华电电力科学研究院有限公司 | Method for realizing large-temperature-difference cold supply and cold accumulation based on waste heat utilization of gas internal combustion engine |
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