CN108534208A - A kind of big temperature difference heat-exchange system - Google Patents
A kind of big temperature difference heat-exchange system Download PDFInfo
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- CN108534208A CN108534208A CN201810459682.0A CN201810459682A CN108534208A CN 108534208 A CN108534208 A CN 108534208A CN 201810459682 A CN201810459682 A CN 201810459682A CN 108534208 A CN108534208 A CN 108534208A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 138
- 239000000725 suspension Substances 0.000 claims abstract description 42
- 239000008400 supply water Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000003643 water by type Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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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
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- 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
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
-
- 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
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
-
- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention provides a kind of big temperature difference heat-exchange systems, including magnetic suspension heat pump unit, first-class heat exchanger and secondary heat exchanger, the first-class heat exchanger to be connected by pipeline with secondary heat exchanger, and forms first circulation circuit for return piping with primary net;The first-class heat exchanger is connected with magnetic suspension heat pump unit by pipeline, and forms second circulation circuit for return piping with secondary network, is once cooled down to once netting to supply water, and is heated up for secondary network water supply;The secondary heat exchanger connect to form third circulation loop by pipeline with magnetic suspension heat pump unit, is cooled down twice to once netting water supply.The invention enables the temperature difference of primary net supply and return water temperature to significantly increase, 35% or more the heat conveying capacity of pipe network, not increased in main pipeline network, can improve 30% or more area of heat-supply service;Low grade residual heat, which is recycled, for power plant creates advantage.
Description
Technical field
The present invention relates to Heat Supply Engineering technical field, specifically a kind of big temperature difference heat-exchange system can collect on a large scale
Middle heating field application.
Background technology
North city scale rapid development, heating area expand year by year at present, and heating pipe network pressure is very big.City heat supply
Water water temperature of pipe network is at 90 DEG C or more, and for return water temperature at 50 DEG C or more, the supply and return water temperature of secondary network is 70/50 DEG C, and one
The return water heat load of 50 DEG C of secondary net or more is very big, is not utilized more fully, and the cooling to power plant after power plant is returned to
System is also very unfavorable.
On the one hand the utilization rate of urban heating network can be provided by increasing the heat supply temperature difference, make limited heating network supply more
Big area of heat-supply service;On the other hand power plant's cooling effect can be improved by reducing return water temperature, effectively promote comprehensive electric generating efficiency, because
This improves the heat supply temperature difference by various modes, is always the major technique direction that Heat Supply Engineering technical field is inquired into.
Invention content
Present invention aim to address above-mentioned the deficiencies in the prior art, provide a kind of big temperature difference heat-exchange system.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit, first-class heat exchanger and secondary heat exchanger, the level-one
Heat exchanger is connected with secondary heat exchanger by pipeline, and forms first circulation circuit for return piping with primary net;The level-one
Heat exchanger is connected with magnetic suspension heat pump unit by pipeline, and forms second circulation circuit for return piping with secondary network, to one
Secondary net water supply is once cooled down, and is heated up for secondary network water supply;The secondary heat exchanger is logical with magnetic suspension heat pump unit
It crosses pipeline to connect to form third circulation loop, be cooled down twice to once netting water supply.
Preferably, the heat-exchange system further includes PLC controller, flow control valve, secondary network water circulating pump, secondary cycle
Pump and temperature sensor;
The PLC controller to collecting temperature signal and controls flow-rate adjustment valve opening, the frequency conversion control that secondary cycle pumps
The working condition of amount processed and magnetic suspension heat pump unit is mounted in the airborne switch board of magnetic suspension heat pump unit;
The flow control valve adjusts thermal energy input quantity to adjust primary net water supply flow, is mounted on primary net and supplies water
On pipeline;
The secondary network water circulating pump, to adjust the circulating water flow for entering magnetic suspension heat pump unit, adjusting is effectively changed
Heat is mounted on secondary network return piping;
The secondary cycle pump, to adjust the circulating water flow of third circulation loop, adjusts effective heat exchange amount, is mounted on
Third circulation loop enters on the pipeline of secondary heat exchanger;
The temperature sensor, to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network water supply to PLC controller
Pipeline, magnetic suspension heat pump unit between pipeline, secondary network return piping, magnetic suspension heat pump unit and first-class heat exchanger and two level
On pipeline between heat exchanger;
The flow control valve, temperature sensor, secondary cycle pump and magnetic suspension heat pump unit are electrical with PLC controller
Connection.
Preferably, the magnetic suspension heat pump unit includes evaporator and condenser, and first-class heat exchanger passes through pipe with condenser
Line is connected;Secondary heat exchanger is connect with evaporator;The evaporator is absorbing the circulating water heating after secondary heat exchanger exchanges heat
Amount, and pass to condenser;Condenser makes secondary network return water temperature increase to discharge heat to secondary network return water.
Further, the first-class heat exchanger include the first water inlet of first-class heat exchanger, the first water outlet of first-class heat exchanger,
The second water outlet of the second water inlet of first-class heat exchanger and first-class heat exchanger;The secondary heat exchanger include secondary heat exchanger first into
The mouth of a river, the second water outlet of the first water outlet of secondary heat exchanger, the second water inlet of secondary heat exchanger and secondary heat exchanger;The level-one
The first water inlet of heat exchanger is connect with primary net water supply line, and the first water outlet of first-class heat exchanger is intake with secondary heat exchanger first
Mouth is connected by pipeline, and the first water outlet of secondary heat exchanger is connect with primary net return piping.
Further, the condenser includes condenser inlet and condensator outlet, the condenser inlet and secondary network
Return piping connects, and condensator outlet connect with the second water inlet of first-class heat exchanger, the second water outlet of first-class heat exchanger with it is secondary
Net water supply line connects.
Further, the evaporator includes evaporator and evaporator outlet, and the evaporator outlet is changed with two level
The second water inlet of hot device connects, and evaporator is connect with the second water outlet of secondary heat exchanger.
Further, the flow control valve is electric butterfly valve.
Further, the magnetic suspension heat pump unit uses magnetic suspension centrifuge heat pump.
Beneficial effects of the present invention:
(1) temperature difference of primary net supply and return water temperature significantly increases, 35% or more the heat conveying capacity of pipe network, in main pipe
In the case of net is not increased, 30% or more area of heat-supply service can be improved.
(2) present invention is that power plant's recycling low grade residual heat creates advantage.Since heat supply network return water temperature is reduced to
30 DEG C hereinafter, can be more prone to recycle plant condenser waste heat, to establish base to improve power plant system efficiency of energy utilization
Plinth.
(3) magnetic suspension heat pump unit is mainly by evaporating and condensing two shell and tube exchangers and compressor set at structure is tight
It gathers, it is low noise, efficient, the 50% of only traditional lithium bromide chiller volume, it is easily installed, is suitble to the transformation of existing heat exchange station,
The device space need not specially be increased, improve the feasibility of heat exchange station reducing energy consumption.
Description of the drawings
A part of attached drawing for constituting the present invention is used to provide further understanding of the present invention.In the accompanying drawings:
Fig. 1 is a kind of annexation figure of big temperature difference heat-exchange system of the present invention.
In figure:1, magnetic suspension heat pump unit;101, evaporator;1011 evaporators;1012, evaporator outlet;102、
Condenser;1021, condenser inlet;1022 condensator outlets;2, first-class heat exchanger;201, the first water inlet of first-class heat exchanger;
202, the first water outlet of first-class heat exchanger;203, the second water inlet of first-class heat exchanger;204, the second water outlet of first-class heat exchanger;3、
Secondary heat exchanger;301, the first water inlet of secondary heat exchanger;302, the first water outlet of secondary heat exchanger;303, secondary heat exchanger
Two water inlets;304, the second water outlet of secondary heat exchanger;4, flow control valve;5, secondary network water circulating pump;6, secondary cycle pumps;
7, temperature sensor.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit 1, first-class heat exchanger 2 and two level are changed
Hot device 3, the magnetic suspension heat pump unit 1 include evaporator 101 and condenser 102, the first-class heat exchanger 2 and secondary heat exchanger
3 are connected by pipeline, and form first circulation circuit for return piping with primary net;The first-class heat exchanger 2 and condenser 102
It is connected by pipeline, and second circulation circuit is formed for return piping with secondary network, once cooled down to once netting to supply water, and
It heats up for secondary network water supply;The secondary heat exchanger 3 connect to form third circulation loop by pipeline with evaporator 101,
It is cooled down twice to once netting water supply.The evaporator 101 to absorb through secondary heat exchanger 3 heat exchange after circulating water heating
Amount, and pass to condenser 102;Condenser 102 makes secondary network return water temperature increase to discharge heat to secondary network return water,
Heat displacement is carried out after first-class heat exchanger 2, and pipeline water temperature is increased again and is conveyed to user through secondary network water supply line;First
Circulation loop, second circulation circuit and third circulation loop work at the same time.
The first-class heat exchanger 2 includes the first water inlet of first-class heat exchanger 201, the first water outlet of first-class heat exchanger 202, one
The second water inlet of grade heat exchanger 203 and the second water outlet of first-class heat exchanger 204;The secondary heat exchanger 3 includes secondary heat exchanger
First water inlet 301, the first water outlet of secondary heat exchanger 302, the second water inlet of secondary heat exchanger 303 and secondary heat exchanger second
Water outlet 304;The first water inlet of the first-class heat exchanger 201 is connect with primary net water supply line, and first-class heat exchanger first is discharged
Mouthfuls 202 are connect with the first water inlet of secondary heat exchanger 301 by pipeline, the first water outlet of secondary heat exchanger 302 with once net back
Water pipeline connects.
The condenser 102 include condenser inlet 1021 and condensator outlet 1022, the condenser inlet 1021 with
Secondary network return piping connects, and condensator outlet 1022 is connect with the second water inlet of first-class heat exchanger 203, first-class heat exchanger second
Water outlet 204 is connect with secondary network water supply line.
The evaporator 101 include evaporator 1011 and evaporator outlet 1012, the evaporator outlet 1012 with
The second water inlet of secondary heat exchanger 303 connects, and evaporator 1011 is connect with the second water outlet of secondary heat exchanger 304.
The heat-exchange system further includes PLC controller, flow control valve 4, secondary network water circulating pump 5,6 and of secondary cycle pump
Temperature sensor 7;
The PLC controller to collecting temperature signal and carries out processing analysis, by a series of special algorithms, control
The frequency control amount of 4 aperture of flow control valve processed, secondary cycle pump 6, adjusts the running parameter of magnetic suspension heat pump unit 1, to
Under the premise of safe operation, so that system is in optimum Working, keep the high energy efficiency ratio of system, is mounted on magnetic suspension heat pump
In the airborne switch board of unit 1;
The flow control valve 4, be electric butterfly valve, according to the supply and return water temperature of secondary network change, by PLC controller come
Computing system thermal energy inputs, while adjusting primary net water supply flow, adjusts thermal energy input quantity, is mounted on primary net water supply line
On;
The secondary network water circulating pump 5 adjusts the frequency control amount of secondary network water circulating pump 5, and then adjusts and enter magnetcisuspension
The circulating water flow of superficial heat pump assembly 1 ensures effective heat exchange amount, is mounted on secondary network return piping, secondary network water circulating pump 5
Frequency control amount be usually quantitative, be adjusted according to secondary network end subscriber service condition or synoptic climate situation;
The secondary cycle pump 6, according to the variation of secondary network supply and return water temperature and primary net water supply flow, will have a direct impact on
Circular flow to the leaving water temperature of first-class heat exchanger 2, secondary heat exchanger 3 can also change therewith, by PLC controller calculating come
It determines that the frequency control amount of secondary cycle pump 6 ensures effective heat exchange amount to adjust the circulating water flow of third circulation loop, pacifies
On the pipeline that third circulation loop enters secondary heat exchanger 3;
The temperature sensor 7, to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network confession to PLC controller
Pipeline, magnetic suspension heat pump unit 1 between water pipeline, secondary network return piping, magnetic suspension heat pump unit 1 and first-class heat exchanger 2
On pipeline between secondary heat exchanger 3;
The flow control valve 4, temperature sensor 7, secondary cycle pump 6 and magnetic suspension heat pump unit 1 are and PLC controller
It is electrically connected.
The magnetic suspension heat pump unit 1 uses magnetic suspension centrifuge heat pump, its main feature is that low noise, efficient, structure is tight
It gathers, is easily installed, be suitble to the transformation of existing heat exchange station, need not specially increase the device space, improve heat exchange station reducing energy consumption
Feasibility.
As shown in Figure 1, the system optimum Working:90 DEG C of primary nets supply water and enter first-class heat exchanger 2 by pipeline, with
Heat displacement is carried out into the secondary network return water for being once warming up to 48 DEG C by condenser 102 of first-class heat exchanger 2 simultaneously, once
Net supplies water flows out the secondary heat exchanger 3 that 50 DEG C of water enter big flow after heat is replaced, and secondary network return water flows after heat is replaced
Go out the secondary network that temperature is 60 DEG C to supply water, secondary network supplies water to user's thermal losses, the secondary network return water of 45 DEG C of outflow;Two level
Heat exchanger 3 connect to form third circulation loop by pipeline with evaporator 101, and flowing out 20 DEG C of recirculated waters from evaporator 101 enters
Secondary heat exchanger 3 flows out in 30 DEG C of recirculated waters to evaporator 101,101 absorption cycle hydro-thermal of evaporator after heat is replaced
Amount passes to condenser 102, and condenser 102 discharges heat and is once warming up to 48 DEG C to 45 DEG C of secondary network return water progress, once
Net supply water 50 DEG C of water after the displacement of first-class heat exchanger 2 enter 20 DEG C of recirculated waters that secondary heat exchanger 3 and evaporator 101 flow out into
After the displacement of row heat, the primary net return water of 25 DEG C of outflow.
Primary net water supply 50 DEG C of water of outflow after first-class heat exchanger 2 carries out heat displacement contain sizable heat load, directly
It connects and flows back to a pipe network unfortunately, the third circulation loop being made up of secondary heat exchanger 3 and evaporator 101, by evaporator
It is that magnetic suspension heat pump unit 1 provides low-temperature heat source, while 50 DEG C of water being replaced that 20 DEG C of recirculated waters, which are replaced as 30 DEG C of recirculated waters, in 101
It is flowed out at 25 DEG C of water.30 DEG C of optimum condition, that is, inflow temperature of evaporator 101,20 DEG C of leaving water temperature, COP (Energy Efficiency Ratio) can be with
Reach 8.2, count the power that secondary cycle pump 6 and secondary network water circulating pump 5 consume in, system energy efficiency can reach 7.5, entirely change
The efficiency of hot systems can reach 87%.According to the calculation of price of using energy source gradient, reuptaked in 2 return water of first-class heat exchanger
Heat is utilized, and has very high economic value.
The load of heat exchange end, that is, secondary network is continually changing, and PLC controller mainly passes through secondary network supply backwater temperature difference
It is calculated, is worked according to control flow control valve 4 is calculated, the adjusting of primary net water supply flow makes system reach thermal balance;
The adjusting of primary net water supply flow will have a direct impact on the leaving water temperature of first-class heat exchanger 2, and the circular flow of secondary heat exchanger 3 also can
Change therewith, system must determine the frequency control amount of secondary cycle pump 6, magnetic suspension heat pump machine by PLC controller calculating
The inside of group 1 can be also adjusted by PLC controller, and self-balancing adjusting is carried out between each variable, makes magnetic suspension heat pump machine
Group 1 keeps optimum Working;PLC controller adjusts flow control valve 4, controls primary net by a series of special algorithms
3 flow of water supply flow and secondary heat exchanger adjusts 1 running parameter of magnetic suspension heat pump unit, thus under the premise of safe operation,
So that system is in optimum Working, keeps the high energy efficiency ratio of system.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacing, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of invention.
Claims (8)
1. a kind of big temperature difference heat-exchange system, including magnetic suspension heat pump unit (1), first-class heat exchanger (2) and secondary heat exchanger (3),
The first-class heat exchanger (2) is connected with secondary heat exchanger (3) by pipeline, and forms first circulation for return piping with primary net
Circuit;The first-class heat exchanger (2) is connected with magnetic suspension heat pump unit (1) by pipeline, and linear for return pipe with secondary network
At second circulation circuit, once cooled down to once netting to supply water, and is heated up for secondary network water supply;The secondary heat exchanger
(3) it connect to form third circulation loop by pipeline with magnetic suspension heat pump unit (1), be cooled down twice to once netting water supply.
2. a kind of big temperature difference heat-exchange system according to claim 1, it is characterised in that:The heat-exchange system further includes PLC
Controller, flow control valve (4), secondary network water circulating pump (5), secondary cycle pump (6) and temperature sensor (7);
The PLC controller, to collecting temperature signal and control flow control valve (4) aperture, secondary cycle pump (6) frequency conversion
The working condition of controlled quentity controlled variable and magnetic suspension heat pump unit (1) is mounted in the airborne switch board of magnetic suspension heat pump unit (1);
The flow control valve (4) adjusts thermal energy input quantity to adjust primary net water supply flow, is mounted on primary net and supplies water
On pipeline;
The secondary network water circulating pump (5) is adjusted effective to adjust the circulating water flow for entering magnetic suspension heat pump unit (1)
Heat exchange amount is mounted on secondary network return piping;
The secondary cycle pump (6) adjusts effective heat exchange amount, is mounted on to adjust the circulating water flow of third circulation loop
Third circulation loop enters on the pipeline of secondary heat exchanger (3);
The temperature sensor (7), to detect water temperature, simultaneously up-delivering signal is separately mounted to secondary network water supply to PLC controller
Pipeline, magnetic suspension heat pump unit between pipeline, secondary network return piping, magnetic suspension heat pump unit (1) and first-class heat exchanger (2)
(1) on the pipeline between secondary heat exchanger (3);
The flow control valve (4), temperature sensor (7), secondary cycle pump (6) and magnetic suspension heat pump unit (1) are controlled with PLC
Device processed is electrically connected.
3. a kind of big temperature difference heat-exchange system according to claim 1, it is characterised in that:The magnetic suspension heat pump unit (1)
Including evaporator (101) and condenser (102), first-class heat exchanger (2) is connected with condenser (102) by pipeline;Secondary heat exchange
Device (3) is connect with evaporator (101);The evaporator (101) to absorb through secondary heat exchanger (3) heat exchange after circulating water heating
Amount, and pass to condenser (102);Condenser (102) makes secondary network return water temperature to discharge heat to secondary network return water
It increases.
4. a kind of big temperature difference heat-exchange system according to claim 3, it is characterised in that:The first-class heat exchanger (2) includes
The first water inlet of first-class heat exchanger (201), the first water outlet of first-class heat exchanger (202), the second water inlet of first-class heat exchanger (203)
With the second water outlet of first-class heat exchanger (204);The secondary heat exchanger (3) includes the first water inlet of secondary heat exchanger (301), two
Grade the first water outlet of heat exchanger (302), the second water inlet of secondary heat exchanger (303) and the second water outlet of secondary heat exchanger (304);
The first water inlet of the first-class heat exchanger (201) is connect with primary net water supply line, the first water outlet of first-class heat exchanger (202) with
The first water inlet of secondary heat exchanger (301) is connected by pipeline, the first water outlet of secondary heat exchanger (302) and primary net return pipe
Line connects.
5. a kind of big temperature difference heat-exchange system according to claim 4, it is characterised in that:The condenser (102) includes cold
Condenser import (1021) and condensator outlet (1022), the condenser inlet (1021) connect with secondary network return piping, cold
Condenser outlet (1022) connect with the second water inlet of first-class heat exchanger (203), the second water outlet of first-class heat exchanger (204) with it is secondary
Net water supply line connects.
6. a kind of big temperature difference heat-exchange system according to claim 4, it is characterised in that:The evaporator (101) includes steaming
Send out device import (1011) and evaporator outlet (1012), the evaporator outlet (1012) and the second water inlet of secondary heat exchanger
(303) it connects, evaporator (1011) is connect with the second water outlet of secondary heat exchanger (304).
7. a kind of big temperature difference heat-exchange system according to claim 2, it is characterised in that:The flow control valve (4) is electricity
Dynamic butterfly valve.
8. a kind of big temperature difference heat-exchange system according to claim 6, it is characterised in that:The magnetic suspension heat pump unit (1)
Using magnetic suspension centrifuge heat pump.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109708180A (en) * | 2019-02-21 | 2019-05-03 | 苏州必信空调有限公司 | Its heat-exchange system and application its thermoelectric heating system of a kind of big temperature difference temperature rise heat exchanger and application |
CN110822754A (en) * | 2019-12-13 | 2020-02-21 | 苏州必信空调有限公司 | Distributed heating system |
WO2020103271A1 (en) * | 2018-11-20 | 2020-05-28 | 青岛海尔空调电子有限公司 | Heat pump system |
CN114608052A (en) * | 2022-02-25 | 2022-06-10 | 北京市京海换热设备制造有限责任公司 | Combined heat and power distributed heating plant device |
CN114659150A (en) * | 2022-04-02 | 2022-06-24 | 陈连祥 | Overline large-temperature-difference residual and waste heat energy central heating system |
CN115031280A (en) * | 2022-06-10 | 2022-09-09 | 丁丰 | Multi-path large-temperature-difference low-energy-consumption heat supply and heat supply method thereof |
CN115218252A (en) * | 2022-07-11 | 2022-10-21 | 朴瑞(北京)企业管理有限公司 | Intelligent efficient heat exchange system for urban energy-saving heat supply |
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