CN206191975U - Take direct heat supply's direct combustion type first kind lithium bromide absorption heat pump unit - Google Patents

Take direct heat supply's direct combustion type first kind lithium bromide absorption heat pump unit Download PDF

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Publication number
CN206191975U
CN206191975U CN201621222262.3U CN201621222262U CN206191975U CN 206191975 U CN206191975 U CN 206191975U CN 201621222262 U CN201621222262 U CN 201621222262U CN 206191975 U CN206191975 U CN 206191975U
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water
heat
refrigerant
condenser
solution
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CN201621222262.3U
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毛洪财
王炎丽
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Shuangliang Eco Energy Systems Co Ltd
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Shuangliang Eco Energy Systems Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

Abstract

The utility model relates to a take direct heat supply's direct combustion type first kind lithium bromide absorption heat pump unit belongs to refrigeration plant technical field. Including direct combustion generator (1), condenser (2), evaporimeter (4), absorber (5), solution heat exchanger (3), solution pump (8) and cryrogenic fluid pump (10), its characterized in that: add one weak solution bypass pipe (15) between solution pump outlet pipe (7) and cryogen water liquid bag (9) to set up one weak solution bypass valve (16) above that, add a condenser cryogen water switching ball valve (19) on condenser cryogen water advances the U type pipe (14) of evaporimeter, a condenser cryogen water bypass pipe (17) is add between bottom absorber (5) barrel to the U type pipe (14) that advances the evaporimeter of the condenser cryogen water before this condenser cryogen water switching ball valve simultaneously to set up a condenser cryogen water bypass valve (18) above that. Take place to cut off the water supply under the non - normal condition with waste heat water under external condition normal condition, switch through the valve of unit own, all can prepare out required medium temperature heat source.

Description

Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating
Technical field
The utility model is related to a kind of first class lithium bromide absorptive heat pump unit.Category technical field of refrigeration equipment.
Background technology
Current China the industries such as oil field, chemical industry, metallurgy, coking exist it is substantial amounts of such as oil recovery separation water, it is technique waste water, low The low-grade heat sources such as warm spent hot water, while we need substantial amounts of middle temperature-heat-source again in production technology and life, existing low Grade waste heat need again in temperature-heat-source occasion, using first class lithium bromide absorptive heat pump unit extract low temperature exhaust heat water heat Amount, produces out more than 40 DEG C higher than low-temperature heat source of middle temperature-heat-source, can save a large amount of more than 40% fuel, realizes the energy Comprehensive utilization, achieves preferable economic benefit.The direct combustion type first class lithium bromide absorptive heat pump unit of standard(Such as Fig. 1)By Direct combustion generator 1, condenser 2, evaporator 4, absorber 5, solution heat exchanger 3, solution pump 8, cryogenic fluid pump 10, pumped vacuum systems And control system(Not shown in figure)And pipeline, the valve of connecting components etc. is constituted.It is that low temperature exhaust heat water enters to heat flow In the heat-transfer pipe of evaporator 4, the water as refrigerant in water as refrigerant liquid capsule 9 is extracted out and sprays the heat-transfer pipe in evaporator 4 by cryogenic fluid pump 10 Surface, absorption flows through the heat of remaining hot water in heat-transfer pipe, is vaporized into refrigerant vapour, remaining hot water temperature reduction stream after heat is released Go out unit;The refrigerant vapour inflow absorber 5 produced after remaining hot water heat is absorbed, the lithium bromide under being drenched by absorber overhead is dense molten Liquid absorbs.Lithium bromide concentrated solution releases the heat of condensation of refrigerant vapour when refrigerant vapour is absorbed, and heating flows through absorber heat-transfer pipe Interior hot water, makes its temperature flow out absorber after raising;Lithium bromide concentrated solution concentration after refrigerant vapour is absorbed is more and more lower, converges Collection is extracted out in absorber bottom by solution pump 8, and direct combustion generator 1, the quilt in direct combustion generator are entered after being heated up through heat exchanger Heating concentration, isolates refrigerant vapour.Concentrated solution with lithium bromide weak solution between heat transfering tube of heat exchanger after carrying out heat exchange Absorber 4 is flowed back to, continues to absorb the refrigerant vapour produced in evaporator;And the high temperature refrigerant vapour stream produced in direct combustion generator Enter in condenser 2, heating flows through the hot water in the heat-transfer pipe of condenser 2, its temperature is flowed out unit after continuing to raise makes for user With, while refrigerant vapour is condensed into water as refrigerant after releasing heat, into evaporator.Because pressure is relatively low in evaporator, into evaporation A water as refrigerant part for device flashes into refrigerant vapour, and another part water as refrigerant then drops because heat is taken away by that part of shwoot Temperature flows into base of evaporator liquid capsule into the water as refrigerant of saturation temperature.Constantly circulation is carried out said process, you can constantly reclaim remaining Hot water heat produces required middle temperature-heat-source.But, during production technology is overhauled or other reasonses, there is remaining hot water and cut off the water supply feelings Condition, does not have waste heat heat to add, and source pump can only just shut down, it is impossible to produce out required middle temperature-heat-source.How could solve Cut off the water supply situation there is remaining hot water, under conditions of there is no waste heat heat to add, direct combustion type first class lithium bromide absorptive heat pump machine Group is not required to shut down the middle temperature-heat-source remained to for needed for user produces out, one of important topic as current research.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of to be cut off the water supply situation in remaining hot water, without more than Under conditions of heat is added, unit be not required to shut down remain to middle temperature-heat-source for needed for user produces out with the straight of direct heating Combustion type first class lithium bromide absorptive heat pump unit.
The utility model purpose is realized in:A kind of lithium bromide absorption type of direct combustion type first heat with direct heating Pump assembly, including direct combustion generator, condenser, evaporator, absorber, solution heat exchanger, solution pump and cryogenic fluid pump, its feature It is:A weak solution bypass pipe is set up between solution pump discharge pipe and water as refrigerant liquid capsule, and is set thereon by a weak solution Port valve;Enter in the U-tube of evaporator to set up condenser water as refrigerant switching ball valve in condenser water as refrigerant, while in the condenser Condenser water as refrigerant before water as refrigerant switching ball valve enters to set up a condenser between the U-tube of evaporator and absorber cylinder body bottom Water as refrigerant bypass pipe, and a condenser water as refrigerant by-passing valve is set thereon.
Source pump external condition(Refer to fuel, remaining hot water, hot water conditions)Under normal circumstances, weak solution by-passing valve, condensation Device water as refrigerant by-passing valve is closed, condenser water as refrigerant switching ball valve be in opening, source pump still press with Past heat supply process flow operation.
Cut off the water supply under abnormal condition when external condition occurs remaining hot water, weak solution by-passing valve, condenser water as refrigerant by-passing valve In opening, condenser water as refrigerant switching ball valve is closed, and source pump presses direct heating of the present utility model Process flow operation.Now, direct combustion generator makes weak solution be condensed into concentrated solution and isolates cryogen by fuel combustion heated solution Steam, hot water is still introduced into absorber and enters back into condenser, and hot water absorbs steamed from direct combustion generator cryogen within the condenser The condensation heat of vapour and heat up, the condensed device water as refrigerant bypass pipe of the water as refrigerant after condensation is directly entered absorber cylinder body bottom, Weak solution is mixed into the concentrated solution under being drenched in absorber, weak solution is pumped into direct combustion generator by solution and concentrated, above-mentioned Constantly circulation is carried out process, under conditions of the addition of no waste heat heat, needed for being produced out with fuel combustion direct heating mode Middle temperature-heat-source.Because remaining hot water is cut off the water supply, there is no waste heat heat to add, just can not evaporate refrigerant vapour supplies absorber in evaporator Concentrated solution absorbs, but has the hot water lower than concentrated solution temperature to flow through in absorber heat-transfer pipe, drenches dense outside absorber heat-transfer pipe Solution concentration is constant and temperature can be reduced, and reduces absorption pressure, and evaporating pressure is also just reduced, and heat-transfer pipe of evaporator internal memory is not The heat of the remaining hot water of emptying will be sucked away and temperature reduction, to prevent heat-transfer pipe of evaporator frozen pipe, through weak solution bypass pipe Cryogen coolant-temperature gage will be lifted during part weak solution is bypassed into water as refrigerant liquid capsule, and the water as refrigerant that will be mixed into solution by cryogenic fluid pump send Enter evaporator heat transfer pipe surface, heat-transfer pipe of evaporator surface temperature is raised, this circulation is also constantly being carried out simultaneously, is thus shut out The latency of evaporator frozen pipe absolutely, it is ensured that in the case where remaining hot water cuts off the water supply abnormal condition, the direct combustion type with direct heating the One lithium bromide absorption type heat pump unit being capable of safe and stable operation.
When external condition recovers normal, that is, when in hot water stream of having a surplus pervaporation device heat-transfer pipe, the direct combustion with direct heating Type first class lithium bromide absorptive heat pump unit only need to will be above-mentioned in valve switch over, so that it may by conventional heat pump heat supply flow Operation, continues the waste heat of recovery waste heat water, produces required middle temperature-heat-source.Heat pump heat supply flow is transferred in direct heating flow At the initial stage, due to being mixed into weak solution in evaporator water as refrigerant, so needing to open evaporator water as refrigerant by-passing valve, carry out water as refrigerant Regeneration is processed, until water as refrigerant is than re-qualified.
The beneficial effects of the utility model are:
The utility model in solution by conventional direct combustion type first class lithium bromide absorptive heat pump crew base, pumping out A weak solution bypass pipe is set up between mouth pipe and water as refrigerant liquid capsule, and a weak solution by-passing valve is set thereon;It is cold in condenser Agent water enters in the U-tube of evaporator to set up condenser water as refrigerant switching ball valve, while switching ball valve in the condenser water as refrigerant Preceding condenser water as refrigerant enters sets up a condenser water as refrigerant bypass pipe between the U-tube of evaporator and absorber cylinder body bottom, And a condenser water as refrigerant by-passing valve is set thereon.It is capable of achieving two kinds of functions:One kind is extracted under normal circumstances in external condition Remaining hot water heat produces required middle temperature-heat-source;It is another to be cut off the water supply under abnormal condition in external condition generation remaining hot water, only need By unit valve transfer in itself, source pump can be transformed into direct heating flow from original heat supply flow, not have In the case of waste heat heat is added, required middle temperature-heat-source is produced out.Operation is very easy, solves conventional remaining hot water and cuts off the water supply situation Under, source pump can only shut down needed for cannot producing in temperature-heat-source significant problem, it is to avoid production technology or life are caused Adverse effect.Due to heat pump itself realize remaining hot water cut off the water supply situation when remain to produce middle temperature-heat-source, system is just not required to set Standby heat exchanger, also reduces system investments cost.So, the utility model also has extraordinary economic benefit.
Brief description of the drawings
Fig. 1 is conventional direct combustion type first class lithium bromide absorptive heat pump unit schematic flow sheet.
Fig. 2 is that direct combustion type first class lithium bromide absorptive heat pump unit flow of the utility model with direct heating is illustrated Figure.
In figure:
Direct combustion generator 1
Condenser 2
Solution heat exchanger 3
Evaporator 4
Absorber 5
Weak solution liquid capsule 6
Solution pump discharge pipe 7
Solution pump 8
Water as refrigerant liquid capsule 9
Cryogenic fluid pump 10
Water as refrigerant sampling valve 11
Evaporator water as refrigerant by-passing valve 12
Evaporator cryogen water regulating valve 13
U-tube 14, weak solution bypass pipe 15
Weak solution by-passing valve 16
Condenser water as refrigerant bypass pipe 17
Condenser water as refrigerant by-passing valve 18
Condenser water as refrigerant switches ball valve 19.
Specific embodiment
As shown in Fig. 2 the utility model is on conventional direct combustion type first class lithium bromide absorptive heat pump crew base, A weak solution bypass pipe 15 is set up between solution pump discharge pipe 7 and water as refrigerant liquid capsule 9, and a weak solution by-passing valve is set thereon 16;Condenser water as refrigerant switching ball valve 19 is set up in the U-tube 14 that condenser water as refrigerant enters evaporator, while in the condensation Condenser water as refrigerant before device water as refrigerant switching ball valve enters between the U-tube 14 of evaporator and the cylinder body bottom of absorber 5 to set up one Condenser water as refrigerant bypass pipe 17, and a condenser water as refrigerant by-passing valve 18 is set thereon.
Source pump external condition(Refer to fuel, remaining hot water, hot water conditions)Under normal circumstances, weak solution by-passing valve 16, cold Condenser water as refrigerant by-passing valve 18 is closed, and condenser water as refrigerant switching ball valve 19 is in opening, and source pump is still So press conventional heat supply process flow operation.
Cut off the water supply under abnormal condition when external condition occurs remaining hot water, weak solution by-passing valve 16, condenser water as refrigerant bypass Valve 18 is in opening, and condenser water as refrigerant switching ball valve 19 is closed, and source pump is by of the present utility model straight Connect heat supply process flow operation.Now, direct combustion generator makes weak solution be condensed into concentrated solution and separate by fuel combustion heated solution Go out refrigerant vapour, hot water is still introduced into absorber 5 and enters back into condenser 2, and hot water absorbs from steam generation in condenser 2 The condensation heat of the refrigerant vapour of device 1 and heat up, the condensed device water as refrigerant bypass pipe 17 of the water as refrigerant after condensation is directly entered absorption Concentrated solution under being drenched in device cylinder body bottom, with absorber 5 is mixed into weak solution, and weak solution is sent into direct combustion and occurred by solution pump 8 Concentration in device 1, the refrigerant vapour that direct combustion generator 1 occurs out is condensed into condenser 2, and constantly circulation is carried out said process, Under conditions of the addition of no waste heat heat, required middle temperature-heat-source is produced out with direct heating mode.Because remaining hot water is disconnected Water, does not have waste heat heat to add, and refrigerant vapour just can not be evaporated in evaporator 4 and is absorbed for the concentrated solution of absorber 5, but absorber is passed There is the hot water lower than concentrated solution temperature to flow through in heat pipe, so, the strong solution concentration drenched outside the heat-transfer pipe of absorber 5 is constant and warm Degree can be reduced, and reduce absorption pressure, and evaporating pressure is also just reduced, the remaining hot water not being vented of the heat-transfer pipe internal memory of evaporator 4 Heat will be sucked away and temperature reduction, by weak solution bypass pipe 15 that part is dilute molten to prevent heat-transfer pipe of evaporator frozen pipe Liquid is bypassed in water as refrigerant liquid capsule 9, and cryogen coolant-temperature gage will be lifted, and the water as refrigerant that will be mixed into solution by cryogenic fluid pump 10 sends into evaporation Device tube surface, heat-transfer pipe of evaporator surface temperature is raised, and this circulation is circulated with solution and constantly carried out simultaneously, thus The latency of evaporator frozen pipe is prevented, it is ensured that in the case where remaining hot water cuts off the water supply abnormal condition, the direct combustion type with direct heating First class lithium bromide absorptive heat pump unit being capable of safe and stable operation.
When external condition recovers normal, that is, when in hot water stream of having a surplus pervaporation device heat-transfer pipe, the direct combustion with direct heating Type first class lithium bromide absorptive heat pump unit only need to will be above-mentioned in valve switch over, so that it may by conventional heat pump heat supply flow Operation, continues the waste heat of recovery waste heat water, produces required middle temperature-heat-source.Heat pump heat supply flow is transferred in direct heating flow At the initial stage, due to being mixed into weak solution in evaporator water as refrigerant, so needing to open evaporator water as refrigerant by-passing valve, carry out water as refrigerant Regeneration is processed, until water as refrigerant is than re-qualified.
Above scheme can be the unit with cryogen heat regenerator suitable for the source pump(Shown in figure), can also It is two sections or more than two sections units(Shown in figure).

Claims (3)

1. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating, including direct combustion generator(1), condensation Device(2), evaporator(4), absorber(5), solution heat exchanger(3), solution pump(8)And cryogenic fluid pump(10), it is characterised in that: Solution pump discharge pipe(7)With water as refrigerant liquid capsule(9)Between set up a weak solution bypass pipe(15), and a weak solution is set thereon By-passing valve(16);Enter the U-tube of evaporator in condenser water as refrigerant(14)On set up a condenser water as refrigerant switching ball valve(19), The condenser water as refrigerant before condenser water as refrigerant switching ball valve enters the U-tube of evaporator simultaneously(14)With absorber(5)Cylinder A condenser water as refrigerant bypass pipe is set up between body bottom(17), and a condenser water as refrigerant by-passing valve is set thereon(18).
2. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating according to claim 1, its It is characterised by that the source pump is the unit with cryogen heat regenerator.
3. a kind of direct combustion type first class lithium bromide absorptive heat pump unit with direct heating according to claim 1, its It is characterised by that the source pump is two sections or more than two sections units.
CN201621222262.3U 2016-11-14 2016-11-14 Take direct heat supply's direct combustion type first kind lithium bromide absorption heat pump unit Active CN206191975U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482382A (en) * 2016-11-14 2017-03-08 双良节能系统股份有限公司 Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482382A (en) * 2016-11-14 2017-03-08 双良节能系统股份有限公司 Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating
CN106482382B (en) * 2016-11-14 2019-06-07 双良节能系统股份有限公司 Direct combustion type first class lithium bromide absorptive heat pump unit with direct heating

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