CN105042943A - Medium-low-temperature hot source heat pump steam system - Google Patents
Medium-low-temperature hot source heat pump steam system Download PDFInfo
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- CN105042943A CN105042943A CN201510557055.7A CN201510557055A CN105042943A CN 105042943 A CN105042943 A CN 105042943A CN 201510557055 A CN201510557055 A CN 201510557055A CN 105042943 A CN105042943 A CN 105042943A
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Abstract
A medium-low-temperature hot source heat pump steam system comprises a heat pump circulating loop allowing a refrigerant to pass and a flash evaporation circulating loop allowing flash evaporation water to pass, wherein an evaporator, a high-temperature compressor, an oil separator, a condenser, an economizer, a subcooler and an electronic expansion valve are sequentially arranged on the heat pump circulating loop, a medium-low-temperature hot source pipeline is communicated to the evaporator, an oil return pipe of the oil separator is communicated to an oil bath of the high-temperature compressor, a flash evaporator and a pressurizing water pump are arranged on the flash evaporation circulating loop, the flash evaporation circulating loop passes the condenser, the condenser is positioned between an outlet of the pressurizing water pump and an inlet of the flash evaporator, a first bypass pipeline is bypassed on a refrigerant outlet pipeline of the evaporator, and the first bypass pipeline passes the subcooler and serves as the cold source of the subcooler. The system can utilize low-grade residual heat to produce steam higher than 100 DEG C, is simple in structure, and can fully recycle waste heat and fully utilize resources.
Description
Technical field
The present invention relates generally to high temperature heat pump technical field, refers in particular to low-temperature heat source in a kind of utilization and produces the middle low-temperature thermal source heat pump vapour system of steam.
Background technology
Along with becoming increasingly conspicuous of international energy problem, how to use the energy efficiently, reclaim various waste heat and reduce the focus that the pollution of heat extraction to environment becomes people's concern, heat pump is a kind of by the device of the heat energy transfer of low level heat energy to high-order thermal source, normally first from natural air, water or soil, obtain low grade heat energy, through electric power acting, and then provide the high-grade that can be utilized heat energy to people.And if be only that the common heat pump of application generally cannot produce steam higher than 100 DEG C, now also have the high-temperature steam-generating heat pump system utilizing low grade residual heat (namely low-temperature heat source) generation higher than the steam of 100 DEG C, but the steam that such high-temperature steam-generating heat pump system will produce more than 100 DEG C need set up the high energy consuming devices such as steam compressor or boiler, make the complex structure of device, and have the low defect of energy-saving effect.
Summary of the invention
The invention provides low-temperature thermal source heat pump vapour system in one, this system can utilize low grade residual heat to produce higher than the steam of 100 DEG C, and structure is simple, fully can reclaim used heat, make full use of resource.
The technical solution adopted in the present invention is:
Low-temperature thermal source heat pump vapour system in one, comprise the heat pump cycle loop passed through for cold-producing medium and the flash distillation closed circuit passed through for flash distillation water, wherein, this heat pump cycle loop is sequentially provided with evaporimeter, high temperature compressor, oil eliminator, condenser, economizer, subcooler and electric expansion valve, low-temperature heat source pipeline during this evaporimeter is communicated with, the oil return pipe of this oil eliminator is communicated to the oil sump of this high temperature compressor, this flash distillation closed circuit is provided with flash vessel and pressure pump, this flash distillation closed circuit is by this condenser, and this condenser is between this pressure (hydraulic) water delivery side of pump and entrance of this flash vessel, wherein, on the refrigerant outlet pipeline of this evaporimeter, bypass has by this subcooler and serves as the first bypass line of the low-temperature receiver of this subcooler.
In this, the course of work of low-temperature thermal source heat pump vapour system is: in heat pump cycle process, during the liquid refrigerant of low-temp low-pressure absorbs in evaporimeter low-temperature heat source pipeline heat after be gasificated into low-pressure refrigerant vapor, low-pressure refrigerant vapor enters the first bypass line of the low-temperature receiver serving as subcooler after leaving evaporimeter, low-pressure refrigerant vapor is compressed into high-temperature high-pressure refrigerant steam entering high temperature compressor in the first bypass line after subcooler heating produces certain degree of superheat, high-temperature high-pressure refrigerant steam enters in condenser and carries out heat release again through oil eliminator and in oil eliminator with after lubricating oil separation, cryogenic high pressure refrigerant liquid is condensed into after heat being passed to flash distillation closed circuit, cryogenic high pressure refrigerant liquid enters economizer after leaving condenser carries out heat exchange and realizes to a certain degree excessively cold, enter in subcooler excessively cold further again, leave the cryogenic high pressure refrigerant liquid of subcooler by entering evaporator evaporation heat absorption after electric expansion valve throttling, so move in circles, complete heat pump cycle, flash distillation closed circuit works when heat pump cycle loop works simultaneously, after pressure pump pressurizes, condenser is entered after after the tail water of flash vessel and supplementary aqueous phase mix, high-temperature high pressure water is become after absorbing the heat of high-temperature high-pressure refrigerant steam in condenser, high-temperature high pressure water enters in flash vessel and flashes off high-temperature steam afterwards, steam higher than the different temperatures of 100 DEG C can be produced by controlling the pressure of flash vessel, having expanded the range of application of heat pump.In this, low-temperature thermal source heat pump vapour system structure is simple, on the refrigerant outlet pipeline of evaporimeter, bypass has the first bypass line by this subcooler, namely the cooling medium of cold-producing medium as subcooler of evaporator outlet is adopted, achieve the overheated of the cold-producing medium of evaporator outlet, compressor is avoided to occur Wet Compression, and ensure to obtain cold-producing medium at higher temperature, the used heat of cold-producing medium in abundant recovery subcooler, steam higher than 100 DEG C can be provided, the control of the suction port of compressor degree of superheat is realized by the flow of bypath valve adjusted cooler cold junction cold-producing medium, decrease as realizing overheated and evaporator area that is that increase, improve the heat exchange efficiency of evaporimeter, and in this, low-temperature thermal source heat pump vapour system adopts economizer and subcooler to realize the excessively cold of cold-producing medium, improves the caloric receptivity of system of unit cryogen in evaporimeter simultaneously, the heat of low-temperature heat source pipeline in fully absorbing, and directly adopt the first bypass line to serve as the low-temperature receiver of subcooler, make full use of resource.
In this before being communicated to this evaporimeter, on low-temperature heat source pipeline, bypass has by this oil cooler and serves as the second bypass line of the low-temperature receiver of oil cooler.With leading to the cooling water of the water at low temperature in evaporimeter on low-temperature heat source pipeline as oil cooler, achieve the recovery to lubricating oil heat in oil cooler, and the heat of water at low temperature on middle low-temperature heat source pipeline is increased, the heat of refrigerant suction in evaporimeter can be increased, abundant absorption waste heat, direct employing second bypass line serves as the low-temperature receiver of oil cooler, more saving resource.
The 3rd bypass line of the refrigerant inlet end being communicated to this high temperature compressor is provided with at the refrigerant outlet end of this subcooler, 3rd bypass line is by this economizer and serve as the low-temperature receiver of this economizer, and the 3rd bypass line before leading to described economizer is provided with choke valve.Leave the cold-producing medium of subcooler except getting back to except evaporimeter by electric expansion valve, another part is also had to leave the cold-producing medium of subcooler by the choke valve throttling on the 3rd bypass line, then absorbed in economizer by economizer and after cold-producing medium liberated heat, enter high temperature compressor continuation compression again, circulation like this, the waste heat of cold-producing medium in abundant absorption economizer, and the 3rd bypass line serves as the low-temperature receiver of economizer, more saving resource.
This flash distillation closed circuit is provided with magnetic valve.Make the flow of flash distillation closed circuit adjustable, flexibly more convenient.
The beneficial effect that the present invention brings is:
1, structure is simple, can provide the steam higher than 100 DEG C, expand the range of application of heat pump;
2, can reclaim the used heat of cold-producing medium in the used heat of cold-producing medium in the used heat of lubricating oil in oil cooler, economizer, subcooler, fully recovering waste heat, improve energy utilization rate;
3, the low-temperature receiver that oil cooler, economizer, subcooler are provided in addition is not needed, more saving resource;
4, adopt economizer and subcooler to realize the excessively cold of cold-producing medium simultaneously, improve the caloric receptivity of system of unit cryogen in evaporimeter, adopt the cold-producing medium of evaporator outlet as the cooling medium of subcooler, achieve the overheated of the cold-producing medium of evaporator outlet, avoid high temperature compressor and occur Wet Compression.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Reference numeral: 1, evaporimeter; 2, oil cooler; 3, high temperature compressor; 4, oil eliminator; 5, condenser; 6, flash vessel; 7, pressure pump; 8, economizer; 9, subcooler; F1, valve; F2, valve; F3, check valve; F4, valve; F5, magnetic valve; F6, choke valve; F7, electric expansion valve; F8, valve; F9, valve.
Detailed description of the invention
As shown in Figure 1, low-temperature thermal source heat pump vapour system in one, comprise the heat pump cycle loop passed through for cold-producing medium and the flash distillation closed circuit passed through for flash distillation water, wherein, this heat pump cycle loop is sequentially provided with evaporimeter 1, high temperature compressor 3, oil eliminator 4, condenser 5, economizer 8, subcooler 9 and electric expansion valve F7, low-temperature heat source pipeline during this evaporimeter 1 is communicated with, the oil return pipe of this oil eliminator 4 is communicated to the oil sump of this high temperature compressor 3, this flash distillation closed circuit is provided with flash vessel 6 and pressure pump 7, this flash distillation closed circuit is by this condenser 5, and this condenser 5 is between the outlet and the entrance of this flash vessel 6 of this pressure pump 7, wherein, on the refrigerant outlet pipeline of this evaporimeter 1, bypass has by this subcooler 9 and serves as the first bypass line of the low-temperature receiver of this subcooler 9.
The oil return pipe of oil eliminator 4 is provided with valve F4, to make the flow of oil return pipe adjustable; The refrigerant outlet pipeline of this evaporimeter 1 establishes valve F1, and valve F1 is arranged so that the flow of the refrigerant outlet pipeline of evaporimeter 1 is adjustable; This first bypass line is connected with the two ends of valve F1, and is provided with valve F2 on this first bypass line, and valve F2 is arranged so that the flow of the first bypass line is adjustable.
In this, the course of work of low-temperature thermal source heat pump vapour system is: in heat pump cycle process, during the liquid refrigerant of low-temp low-pressure absorbs in evaporimeter 1 low-temperature heat source pipeline heat after be gasificated into low-pressure refrigerant vapor, low-pressure refrigerant vapor enters the first bypass line of the low-temperature receiver serving as subcooler 9 after leaving evaporimeter 1, low-pressure refrigerant vapor in the first bypass line through subcooler 9 heat produce certain degree of superheat after enter high temperature compressor 3 and be compressed into high-temperature high-pressure refrigerant steam, high-temperature high-pressure refrigerant steam enters in condenser 5 and carries out heat release again through oil eliminator 4 and in oil eliminator 4 with after lubricating oil separation, cryogenic high pressure refrigerant liquid is condensed into after heat being passed to flash distillation closed circuit, cryogenic high pressure refrigerant liquid enters economizer 8 after leaving condenser 5 carries out heat exchange and realizes to a certain degree excessively cold, enter in subcooler 9 excessively cold further again, leave the cryogenic high pressure refrigerant liquid of subcooler 9 by entering evaporimeter 1 evaporation endothermic after electric expansion valve F7 throttling, so move in circles, complete heat pump cycle, flash distillation closed circuit works when heat pump cycle loop works simultaneously, pressurize through water pump after the tail water of flash vessel 6 and supplementary aqueous phase mix and enter condenser 5, high-temperature high pressure water is become after absorbing the heat of high-temperature high-pressure refrigerant steam in condenser 5, high-temperature high pressure water enters in flash vessel 6 and flashes off high-temperature steam afterwards, can produce steam higher than the different temperatures of 100 DEG C by controlling the pressure of flash vessel 6.In this, low-temperature thermal source heat pump vapour system structure is simple, on the refrigerant outlet pipeline of evaporimeter 1, bypass has the first bypass line by this subcooler 9, namely the cold-producing medium adopting evaporimeter 1 to export is as the cooling medium of subcooler 9, achieve the overheated of the cold-producing medium of evaporimeter 1 outlet, avoid compressor to occur Wet Compression, and ensure to obtain cold-producing medium at higher temperature, fully reclaim the used heat of cold-producing medium in subcooler 9, steam higher than 100 DEG C can be provided, expand the range of application of heat pump; And in this, low-temperature thermal source heat pump vapour system adopts economizer 8 and subcooler 9 to realize the excessively cold of cold-producing medium, improves the caloric receptivity of system of unit cryogen in evaporimeter 1 simultaneously, the heat of low-temperature heat source pipeline in fully absorbing; And directly adopt the first bypass line to serve as the low-temperature receiver of subcooler 9, make full use of resource.
In this before being communicated to this evaporimeter 1, on low-temperature heat source pipeline, bypass has by this oil cooler 2 and serves as the second bypass line of the low-temperature receiver of oil cooler 2.With the cooling water of the water at low temperature of leading in evaporimeter 1 on low-temperature heat source pipeline as oil cooler 2, achieve the recovery to lubricating oil heat in oil cooler 2, and the heat of water at low temperature on middle low-temperature heat source pipeline is increased, the heat of refrigerant suction in evaporimeter 1 can be increased, abundant absorption waste heat, direct employing second bypass line serves as the low-temperature receiver of oil cooler 2, more saving resource.
In before being communicated to evaporimeter 1, low-temperature heat source pipeline is provided with valve F9, valve F9 is arranged so that the flow of the middle low-temperature heat source pipeline be communicated to before evaporimeter 1 is adjustable, second bypass line is connected with the two ends of valve F9, and valve F8 is provided with on this second bypass line, valve F8 is arranged so that the flow of the second bypass line is adjustable.
The 3rd bypass line of the refrigerant inlet end being communicated to this high temperature compressor 3 is provided with at the refrigerant outlet end of this subcooler 9,3rd bypass line is by this economizer 8 and serve as the low-temperature receiver of this economizer 8, and the 3rd bypass line before leading to economizer 8 is provided with choke valve F6.Leave the cold-producing medium of subcooler 9 except getting back to except evaporimeter 1 by electric expansion valve F7, another part is also had to leave the cold-producing medium of subcooler 9 by the choke valve F6 throttling on the 3rd bypass line, then absorbed in economizer 8 by economizer 8 and after cold-producing medium liberated heat, enter high temperature compressor 3 continuation compression again, circulation like this, the waste heat of cold-producing medium in abundant absorption economizer 8, and the 3rd bypass line serves as the low-temperature receiver of economizer 8, more saving resource.
The 3rd bypass line between economizer 8 and high temperature compressor 3 is provided with the check valve F3 of the refrigerant inlet end leading to high temperature compressor 3, to ensure to there will not be adverse current.
Valve F1, F2, F4, F8, F9 are arranged so that the flow of system components is adjustable, to guarantee that system is able to run under the state of optimum.
This flash distillation closed circuit is provided with magnetic valve F5.Make the flow of flash distillation closed circuit adjustable, flexibly more convenient.
Above-listed detailed description is illustrating for one of the present invention possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (4)
1. low-temperature thermal source heat pump vapour system in a kind, it is characterized in that: comprise the heat pump cycle loop passed through for cold-producing medium and the flash distillation closed circuit passed through for flash distillation water, wherein, described heat pump cycle loop is sequentially provided with evaporimeter, high temperature compressor, oil eliminator, condenser, economizer, subcooler and electric expansion valve, low-temperature heat source pipeline during described evaporimeter is communicated with, the oil return pipe of described oil eliminator is communicated to the oil sump of described high temperature compressor, described flash distillation closed circuit is provided with flash vessel and pressure pump, described flash distillation closed circuit is by described condenser, and described condenser is between described pressure (hydraulic) water delivery side of pump and the entrance of described flash vessel, wherein, on the refrigerant outlet pipeline of described evaporimeter, bypass has by described subcooler and serves as the first bypass line of the low-temperature receiver of described subcooler.
2. middle low-temperature thermal source heat pump vapour system according to claim 1, is characterized in that: have by described oil cooler and serve as the second bypass line of the low-temperature receiver of oil cooler being communicated to bypass on the described middle low-temperature heat source pipeline before described evaporimeter.
3. middle low-temperature thermal source heat pump vapour system according to claim 1 and 2, it is characterized in that: the 3rd bypass line being provided with the refrigerant inlet end being communicated to described high temperature compressor at the refrigerant outlet end of described subcooler, 3rd bypass line is by described economizer and serve as the low-temperature receiver of described economizer, and the 3rd bypass line before leading to described economizer is provided with choke valve.
4. middle low-temperature thermal source heat pump vapour system according to claim 3, is characterized in that: on described flash distillation closed circuit, be provided with magnetic valve.
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| CN201510557055.7A CN105042943A (en) | 2015-09-01 | 2015-09-01 | Medium-low-temperature hot source heat pump steam system |
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Cited By (12)
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| CN105423266A (en) * | 2015-12-25 | 2016-03-23 | 中石化节能环保工程科技有限公司 | High and low-temperature sewage waste heat cascade utilization and resource recycling system and method thereof |
| CN106348372A (en) * | 2016-09-22 | 2017-01-25 | 侴乔力 | Multistage flash evaporation process independently driven by recycled heat of steam condensation source heat pump |
| CN106969337A (en) * | 2017-04-14 | 2017-07-21 | 中国科学院广州能源研究所 | A kind of heat-pump steam engine group |
| CN108917061A (en) * | 2018-08-06 | 2018-11-30 | 深圳麦克维尔空调有限公司 | A kind of cold water heat pump unit and air-conditioning equipment |
| CN109612293A (en) * | 2018-11-07 | 2019-04-12 | 襄阳泽东化工集团有限公司 | A kind of heat recovery system of condensed water in high temperature |
| CN110513913A (en) * | 2019-08-23 | 2019-11-29 | 四川建源节能科技有限公司 | A kind of heat pump heat reclamation type Synergistic and energy-saving production system of conventional solid-state white wine |
| CN111051793A (en) * | 2017-09-07 | 2020-04-21 | 三菱电机株式会社 | Air conditioning apparatus |
| CN112325254A (en) * | 2020-11-06 | 2021-02-05 | 淄博能源研究院 | Steam generating device for recovering waste heat of low-temperature tail gas |
| CN112539405A (en) * | 2020-12-08 | 2021-03-23 | 南京海陆化工科技有限公司 | Method for improving recovery steam yield of acid making dry absorption waste heat of ore or smelting flue gas |
| CN113028679A (en) * | 2021-04-26 | 2021-06-25 | 中国科学院理化技术研究所 | Waste heat recovery heat pump system |
| CN114623429A (en) * | 2022-03-22 | 2022-06-14 | 东方电气集团东方电机有限公司 | Micro-pressure steam recovery system and method |
| CN116218629A (en) * | 2023-03-29 | 2023-06-06 | 同方节能工程技术有限公司 | Carbon reduction and synergy system for solid-state fermented glutinous rice steamer brewing process |
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| CN108917061A (en) * | 2018-08-06 | 2018-11-30 | 深圳麦克维尔空调有限公司 | A kind of cold water heat pump unit and air-conditioning equipment |
| CN109612293A (en) * | 2018-11-07 | 2019-04-12 | 襄阳泽东化工集团有限公司 | A kind of heat recovery system of condensed water in high temperature |
| CN110513913B (en) * | 2019-08-23 | 2020-05-12 | 四川建源节能科技有限公司 | Heat pump heat recovery type synergistic energy-saving production system for traditional solid-state white spirit |
| CN110513913A (en) * | 2019-08-23 | 2019-11-29 | 四川建源节能科技有限公司 | A kind of heat pump heat reclamation type Synergistic and energy-saving production system of conventional solid-state white wine |
| CN112325254A (en) * | 2020-11-06 | 2021-02-05 | 淄博能源研究院 | Steam generating device for recovering waste heat of low-temperature tail gas |
| CN112539405A (en) * | 2020-12-08 | 2021-03-23 | 南京海陆化工科技有限公司 | Method for improving recovery steam yield of acid making dry absorption waste heat of ore or smelting flue gas |
| CN113028679A (en) * | 2021-04-26 | 2021-06-25 | 中国科学院理化技术研究所 | Waste heat recovery heat pump system |
| CN114623429A (en) * | 2022-03-22 | 2022-06-14 | 东方电气集团东方电机有限公司 | Micro-pressure steam recovery system and method |
| CN116218629A (en) * | 2023-03-29 | 2023-06-06 | 同方节能工程技术有限公司 | Carbon reduction and synergy system for solid-state fermented glutinous rice steamer brewing process |
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Application publication date: 20151111 |