CN104154675B - A kind of lithium bromide jet suction type cooling cycle system of condensation boosting - Google Patents
A kind of lithium bromide jet suction type cooling cycle system of condensation boosting Download PDFInfo
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- CN104154675B CN104154675B CN201410452860.9A CN201410452860A CN104154675B CN 104154675 B CN104154675 B CN 104154675B CN 201410452860 A CN201410452860 A CN 201410452860A CN 104154675 B CN104154675 B CN 104154675B
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 70
- 238000001816 cooling Methods 0.000 title claims abstract description 26
- 230000005494 condensation Effects 0.000 title claims description 20
- 238000009833 condensation Methods 0.000 title claims description 20
- 239000003507 refrigerant Substances 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000010521 absorption reaction Methods 0.000 claims abstract description 30
- 239000006096 absorbing agent Substances 0.000 claims abstract description 25
- 238000005057 refrigeration Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 78
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Sorption Type Refrigeration Machines (AREA)
Abstract
一种冷凝升压的溴化锂喷射吸收式制冷循环系统，它涉及一种吸收式制冷循环系统。冷凝器通过第一冷剂水通路与蒸发器连通，蒸发器通过第二冷剂水蒸气管路与吸收器连通，第一稀溶液管路和第一浓溶液管路的一端均与吸收器连通、另一端均与发生器连通，溶液换热器设置在第一稀溶液管路和第一浓溶液管路上，第一连接管的一端与沸腾器连通、另一端与喷射器连通，第一冷剂水蒸气管路的一端与发生器连通、另一端与喷射器连通，第三连接管的一端与冷凝器连通、另一端与喷射器连通，第二连接管的一端与沸腾器连通、另一端与储液装置连通，储液装置设置在冷凝器的下面，冷剂水泵设置在第二连接管上。本发明用于吸收式水源热泵系统中。
The invention relates to a condensing and boosting lithium bromide jet absorption refrigeration cycle system, which relates to an absorption refrigeration cycle system. The condenser communicates with the evaporator through the first refrigerant water passage, the evaporator communicates with the absorber through the second refrigerant water vapor pipeline, and both ends of the first dilute solution pipeline and the first concentrated solution pipeline communicate with the absorber , the other ends are connected with the generator, the solution heat exchanger is arranged on the first dilute solution pipeline and the first concentrated solution pipeline, one end of the first connecting pipe is connected with the boiler, the other end is connected with the injector, the first cooling One end of the agent water vapor pipeline communicates with the generator and the other end communicates with the ejector; one end of the third connecting pipe communicates with the condenser and the other end communicates with the ejector; one end of the second connecting pipe communicates with the boiler and the other end communicates with the It communicates with the liquid storage device, the liquid storage device is arranged under the condenser, and the refrigerant water pump is arranged on the second connecting pipe. The invention is used in an absorption water source heat pump system.
Description
技术领域technical field
本发明涉及一种吸收式制冷循环系统，具体涉及一种冷凝升压的溴化锂喷射吸收式制冷循环系统。The invention relates to an absorption refrigerating cycle system, in particular to a condensing and boosting lithium bromide spray absorption refrigerating cycle system.
背景技术Background technique
传统的吸收式制冷循环系统如图2所示，主要由发生器1、冷凝器2、蒸发器3、吸收器5、溶液换热器6、溶液泵10等以及相连管路构成。发生器1在第一高位热源25的加热作用下，将其中的溴化锂溶液浓缩后产生较高温高压的冷剂水蒸气通过第一冷剂水蒸气管路42进入冷凝器2中冷凝，冷凝过程释放的热量由第二冷却热源45吸收，冷凝后产生的冷剂水经由膨胀节流装置8节流降压后通过冷剂水通路12进入蒸发器3中，在蒸发器3中，冷剂水吸收低位热源27的热量后变为蒸气，通过第二冷剂水蒸气管路15输入吸收器5中被溴化锂溶液所吸收，吸收过程释放的热量由第一冷却热源26吸收。在吸收器5中吸收了水蒸气的溴化锂溶液浓度降低后，由溶液泵10驱动，通过第一稀溶液管路18输入发生器1中，在发生器1中进行加热浓缩，浓缩后产生的浓溶液通过第一浓溶液管路19返回吸收器5中继续吸收水蒸气，其中，第一浓溶液管路19和第一稀溶液管路18中的溴化锂溶液通过溶液换热器6进行热交换。The traditional absorption refrigeration cycle system is shown in Figure 2, which is mainly composed of a generator 1, a condenser 2, an evaporator 3, an absorber 5, a solution heat exchanger 6, a solution pump 10, etc., and connected pipelines. Under the heating action of the first high-level heat source 25, the generator 1 condenses the lithium bromide solution in it to generate relatively high-temperature and high-pressure refrigerant water vapor and enters the condenser 2 through the first refrigerant water vapor pipeline 42 to condense, and the condensation process releases The heat is absorbed by the second cooling heat source 45, and the refrigerant water generated after condensation is throttled and depressurized by the expansion throttling device 8 and enters the evaporator 3 through the refrigerant water passage 12. In the evaporator 3, the refrigerant water absorbs The heat of the low-level heat source 27 turns into steam, and is input into the absorber 5 through the second refrigerant steam pipeline 15 to be absorbed by the lithium bromide solution, and the heat released during the absorption process is absorbed by the first cooling heat source 26. After the concentration of the lithium bromide solution that has absorbed water vapor in the absorber 5 is reduced, it is driven by the solution pump 10, and is input in the generator 1 through the first dilute solution pipeline 18, and is heated and concentrated in the generator 1, and the concentrated solution produced after concentration The solution is returned to the absorber 5 through the first concentrated solution pipeline 19 to continue absorbing water vapor, wherein the lithium bromide solution in the first concentrated solution pipeline 19 and the first dilute solution pipeline 18 are heat-exchanged through the solution heat exchanger 6 .
在上述溴化锂吸收式制冷循环系统中，由于受溶液自身特性的影响，当第一高位热源25和低位热源27的温度一定时，系统的冷凝压力存在一个上限，即冷凝温度存在一个上限。由于第二冷却热源45温度必须低于冷凝温度，因此满足冷却要求的第二冷却热源45的温度也存在一个上限，如果实际条件所能提供的第二冷却热源45的温度高于这个上限，那么上述传统的溴化锂吸收式制冷循环系统将无法正常工作。例如将上述传统的溴化锂吸收式制冷循环系统用于热泵的制热工况时，若要求的供热热媒温度高于上述第二冷却热源45的温度上限时，则上述传统的溴化锂吸收式制冷循环系统就无法实现；将上述传统的溴化锂吸收式制冷循环系统用于冷水机组的制冷工况时，若所能提供的冷却水的温度高于上述第二冷却热源45的温度上限时，则上述传统的溴化锂吸收式制冷循环系统也无法实现。因此，提高冷凝压力和冷凝温度就可以提高第二冷却热源45的温度上限，使得溴化锂吸收式制冷循环系统满足更高第二冷却热源温度的应用条件和领域。In the above-mentioned lithium bromide absorption refrigeration cycle system, due to the influence of the characteristics of the solution itself, when the temperatures of the first high-level heat source 25 and the low-level heat source 27 are constant, there is an upper limit for the condensation pressure of the system, that is, there is an upper limit for the condensation temperature. Because the temperature of the second cooling heat source 45 must be lower than the condensation temperature, there is also an upper limit in the temperature of the second cooling heat source 45 that meets the cooling requirements. If the temperature of the second cooling heat source 45 that actual conditions can provide is higher than the upper limit, then The above-mentioned traditional lithium bromide absorption refrigeration cycle system will not work normally. For example, when the above-mentioned traditional lithium bromide absorption refrigeration cycle system is used in the heating mode of the heat pump, if the required heating medium temperature is higher than the temperature upper limit of the second cooling heat source 45, the above-mentioned traditional lithium bromide absorption refrigeration cycle system Circulation system just can't be realized; When using above-mentioned traditional lithium bromide absorption type refrigerating circulation system for the refrigerating working condition of chiller, if the temperature of the cooling water that can provide is higher than when the temperature upper limit of above-mentioned second cooling heat source 45, then above-mentioned The traditional lithium bromide absorption refrigeration cycle system cannot be realized either. Therefore, increasing the condensation pressure and condensation temperature can increase the upper temperature limit of the second cooling heat source 45, so that the lithium bromide absorption refrigeration cycle system can meet the application conditions and fields of higher second cooling heat source temperature.
发明内容Contents of the invention
本发明为解决传统的溴化锂吸收式制冷循环系统在运行过程中冷凝压力和冷凝温度无法单独提高的问题，提供了一种冷凝升压的溴化锂喷射吸收式制冷循环系统。In order to solve the problem that the condensing pressure and the condensing temperature cannot be increased independently during the operation of the traditional lithium bromide absorption refrigeration cycle system, the invention provides a lithium bromide injection absorption refrigeration cycle system with condensation and boost pressure.
本发明的一种冷凝升压的溴化锂喷射吸收式制冷循环系统包括发生器、冷凝器、蒸发器、吸收器、溶液换热器、膨胀节流装置、溶液泵、节流阀、第一冷剂水蒸气管路、第一冷剂水通路、第二冷剂水蒸气管路、第一稀溶液管路、第一浓溶液管路、喷射器、沸腾器、第一连接管、第二连接管、第三连接管、储液装置和冷剂水泵，冷凝器通过第一冷剂水通路与蒸发器连通，膨胀节流装置设置在第一冷剂水通路上，蒸发器通过第二冷剂水蒸气管路与吸收器连通，第一稀溶液管路和第一浓溶液管路的一端均与吸收器连通，第一稀溶液管路和第一浓溶液管路的另一端均与发生器连通，溶液换热器设置在第一稀溶液管路和第一浓溶液管路上，溶液泵和节流阀位于吸收器与溶液换热器之间，且溶液泵设置在第一稀溶液管路上，节流阀设置在第一浓溶液管路上，第一连接管的一端与沸腾器连通，第一连接管的另一端与喷射器的工作介质进口连通，第一冷剂水蒸气管路的一端与发生器连通，第一冷剂水蒸气管路的另一端与喷射器的被引射介质进口连通，第三连接管的一端与冷凝器连通，第三连接管另一端与喷射器的出口连通，第二连接管的一端与沸腾器连通，第二连接管的另一端与储液装置连通，储液装置设置在冷凝器的下面，冷剂水泵设置在第二连接管上，沸腾器由第二高位热源加热，蒸发器由低位热源加热，吸收器由第一冷却热源冷却，冷凝器由第二冷却热源冷却，发生器由第一高位热源加热。A condensing and boosting lithium bromide jet absorption refrigeration cycle system of the present invention comprises a generator, a condenser, an evaporator, an absorber, a solution heat exchanger, an expansion throttling device, a solution pump, a throttle valve, a first refrigerant Water vapor pipeline, first refrigerant water passage, second refrigerant water vapor pipeline, first dilute solution pipeline, first concentrated solution pipeline, injector, boiler, first connecting pipe, second connecting pipe , the third connecting pipe, the liquid storage device and the refrigerant water pump, the condenser communicates with the evaporator through the first refrigerant water passage, the expansion throttling device is arranged on the first refrigerant water passage, and the evaporator passes through the second refrigerant water passage The steam pipeline is connected with the absorber, one end of the first dilute solution pipeline and the first concentrated solution pipeline are both connected with the absorber, and the other ends of the first dilute solution pipeline and the first concentrated solution pipeline are connected with the generator , the solution heat exchanger is arranged on the first dilute solution pipeline and the first concentrated solution pipeline, the solution pump and the throttle valve are located between the absorber and the solution heat exchanger, and the solution pump is arranged on the first dilute solution pipeline, The throttle valve is set on the first concentrated solution pipeline, one end of the first connecting pipe communicates with the boiler, the other end of the first connecting pipe communicates with the working medium inlet of the injector, and one end of the first refrigerant water vapor pipeline communicates with the The generator is connected, the other end of the first refrigerant water vapor pipeline is connected with the ejected medium inlet of the ejector, one end of the third connecting pipe is connected with the condenser, and the other end of the third connecting pipe is connected with the outlet of the ejector, One end of the second connecting pipe communicates with the boiler, the other end of the second connecting pipe communicates with the liquid storage device, the liquid storage device is arranged under the condenser, the refrigerant water pump is arranged on the second connecting pipe, and the boiler is controlled by the second The high-level heat source is heated, the evaporator is heated by the low-level heat source, the absorber is cooled by the first cooling heat source, the condenser is cooled by the second cooling heat source, and the generator is heated by the first high-level heat source.
本发明与现有方法相比具有以下有益效果：Compared with existing methods, the present invention has the following beneficial effects:
一、本发明在传统的溴化锂吸收式制冷循环系统的基础上增加了喷射器和沸腾器，由于喷射器出口的冷剂水蒸汽压力介于沸腾器出口的冷剂水蒸汽与发生器出口的冷剂水蒸汽之间，即进入冷凝器的冷剂水蒸汽压力得到了提高，从而提高了溴化锂吸收式制冷循环系统的冷凝温度及第二冷却热源的温度上限。1. The present invention adds an ejector and a boiler on the basis of the traditional lithium bromide absorption refrigeration cycle system. Since the pressure of the refrigerant water vapor at the outlet of the ejector is between that of the refrigerant water vapor at the outlet of the boiler and the pressure of the refrigerant at the outlet of the generator Between the agent and water vapor, that is, the pressure of the refrigerant water vapor entering the condenser is increased, thereby increasing the condensation temperature of the lithium bromide absorption refrigeration cycle system and the upper temperature limit of the second cooling heat source.
二、改变喷射器和沸腾器的设计和运行参数，可以极为方便地对冷凝压力进行调节和控制，更好地适应供热工况时供热热媒或者制冷工况时冷却水的温度条件，为溴化锂吸收式制冷循环系统提供了一种新的调节控制手段。2. Changing the design and operating parameters of the ejector and boiler can easily adjust and control the condensing pressure, and better adapt to the temperature conditions of the heating medium in the heating condition or the cooling water in the cooling condition. A new adjustment and control method is provided for the lithium bromide absorption refrigeration cycle system.
三、本发明在制热工况下，可根据需要提升冷凝压力和冷凝温度。冷凝温度的提高，可以达到更高的供热热媒温度，扩宽溴化锂吸收式制冷循环系统的应用领域。3. The present invention can increase the condensing pressure and condensing temperature as required under heating conditions. The increase of the condensing temperature can reach a higher temperature of the heating medium, and broaden the application field of the lithium bromide absorption refrigeration cycle system.
四、本发明在制冷工况下，冷凝温度的提高，可降低对冷却水温的要求，适应更高的冷却水温度。4. In the cooling condition, the increase of the condensing temperature of the present invention can reduce the requirement on the cooling water temperature and adapt to a higher cooling water temperature.
五、本发明结构简单，不增加运动部件，运行维护方便，且系统性能可靠，节能效果显著。5. The present invention has simple structure, no moving parts, convenient operation and maintenance, reliable system performance, and remarkable energy-saving effect.
附图说明Description of drawings
图1是本发明的具体实施方式一的结构示意图；FIG. 1 is a schematic structural view of Embodiment 1 of the present invention;
图2是传统的溴化锂吸收式制冷循环系统的结构示意图。Fig. 2 is a schematic structural diagram of a traditional lithium bromide absorption refrigeration cycle system.
具体实施方式detailed description
具体实施方式一：结合图1说明本实施方式，本实施方式一种冷凝升压的溴化锂喷射吸收式制冷循环系统包括发生器1、冷凝器2、蒸发器3、吸收器5、溶液换热器6、膨胀节流装置8、溶液泵10、节流阀28、第一冷剂水蒸气管路42、第一冷剂水通路12、第二冷剂水蒸气管路15、第一稀溶液管路18、第一浓溶液管路19、喷射器29、沸腾器30、第一连接管31、第二连接管32、第三连接管11、储液装置33和冷剂水泵34，冷凝器2通过第一冷剂水通路12与蒸发器3连通，膨胀节流装置8设置在第一冷剂水通路12上，蒸发器3通过第二冷剂水蒸气管路15与吸收器5连通，第一稀溶液管路18和第一浓溶液管路19的一端均与吸收器5连通，第一稀溶液管路18和第一浓溶液管路19的另一端均与发生器1连通，溶液换热器6设置在第一稀溶液管路18和第一浓溶液管路19上，溶液泵10和节流阀28位于吸收器5与溶液换热器6之间，且溶液泵10设置在第一稀溶液管路18上，节流阀28设置在第一浓溶液管路19上，第一连接管31的一端与沸腾器30连通，第一连接管31的另一端与喷射器29的工作介质进口连通，第一冷剂水蒸气管路42的一端与发生器1连通，第一冷剂水蒸气管路42的另一端与喷射器29的被引射介质进口连通，第三连接管11的一端与冷凝器2连通，第三连接管11另一端与喷射器29的出口连通，第二连接管32的一端与沸腾器30连通，第二连接管32的另一端与储液装置33连通，储液装置33设置在冷凝器2的下面，冷剂水泵34设置在第二连接管32上，沸腾器30由第二高位热源35加热，第二高位热源35用于加热沸腾器30中的冷剂水，蒸发器3由低位热源27加热，低位热源27用于加热蒸发器3中的冷剂水，吸收器5由第一冷却热源26冷却，第一冷却热源26用于冷却吸收器5中的溴化锂溶液，冷凝器2由第二冷却热源45冷却，第二冷却热源45用于冷却冷凝器2中的冷剂水蒸汽，发生器1由第一高位热源25加热，第一高位热源25用于加热发生器1中的溴化锂溶液。Specific Embodiment 1: This embodiment is described in conjunction with FIG. 1 . In this embodiment, a condensing and boosting lithium bromide jet absorption refrigeration cycle system includes a generator 1, a condenser 2, an evaporator 3, an absorber 5, and a solution heat exchanger. 6. Expansion throttling device 8, solution pump 10, throttle valve 28, first refrigerant water vapor pipeline 42, first refrigerant water passage 12, second refrigerant water vapor pipeline 15, first dilute solution pipe Road 18, first concentrated solution pipeline 19, injector 29, boiler 30, first connecting pipe 31, second connecting pipe 32, third connecting pipe 11, liquid storage device 33 and refrigerant water pump 34, condenser 2 The first refrigerant water passage 12 communicates with the evaporator 3, the expansion throttling device 8 is arranged on the first refrigerant water passage 12, the evaporator 3 communicates with the absorber 5 through the second refrigerant water vapor pipe 15, and the second One end of a dilute solution pipeline 18 and one end of the first concentrated solution pipeline 19 are all communicated with the absorber 5, and the other ends of the first dilute solution pipeline 18 and the first concentrated solution pipeline 19 are all communicated with the generator 1, and the solution exchange The heater 6 is arranged on the first dilute solution pipeline 18 and the first concentrated solution pipeline 19, the solution pump 10 and the throttle valve 28 are located between the absorber 5 and the solution heat exchanger 6, and the solution pump 10 is arranged on the second On a dilute solution pipeline 18, the throttle valve 28 is arranged on the first concentrated solution pipeline 19, one end of the first connecting pipe 31 communicates with the boiler 30, and the other end of the first connecting pipe 31 communicates with the working of the injector 29. The medium inlet is connected, one end of the first refrigerant water vapor pipeline 42 is connected with the generator 1, the other end of the first refrigerant water vapor pipeline 42 is connected with the injected medium inlet of the injector 29, and the third connecting pipe 11 One end of the second connecting pipe 32 communicates with the condenser 2, the other end of the third connecting pipe 11 communicates with the outlet of the ejector 29, one end of the second connecting pipe 32 communicates with the boiler 30, and the other end of the second connecting pipe 32 communicates with the liquid storage device 33 , the liquid storage device 33 is arranged under the condenser 2, the refrigerant water pump 34 is arranged on the second connection pipe 32, the boiler 30 is heated by a second high-level heat source 35, and the second high-level heat source 35 is used to heat the water in the boiler 30 Refrigerant water, the evaporator 3 is heated by a low-level heat source 27, the low-level heat source 27 is used to heat the refrigerant water in the evaporator 3, the absorber 5 is cooled by the first cooling heat source 26, and the first cooling heat source 26 is used to cool the absorber 5 The lithium bromide solution in the condenser 2 is cooled by the second cooling heat source 45, the second cooling heat source 45 is used to cool the refrigerant water vapor in the condenser 2, the generator 1 is heated by the first high-level heat source 25, and the first high-level heat source 25 Used to heat the lithium bromide solution in generator 1.
在冷凝器2的下部设置储液装置33，冷剂水泵34将储液装置33中的冷剂水增压后送入沸腾器30中，从第二高位热源35吸收热量沸腾，产生的高压冷剂蒸汽作为喷射器29的工作流体，来引射发生器1中产生的低压冷剂蒸汽，喷射器29出口的中压冷剂蒸汽压力介于高压冷剂蒸汽与低压冷剂蒸汽之间。中压冷剂蒸汽进入冷凝器2，从而使得冷凝压力提高，喷射器29在本系统中起增压的作用，可根据需要，在一定幅度提升冷凝压力。A liquid storage device 33 is arranged at the lower part of the condenser 2. The refrigerant water pump 34 pressurizes the refrigerant water in the liquid storage device 33 and sends it into the boiler 30. It absorbs heat from the second high-level heat source 35 and boils to generate high-pressure cooling. The refrigerant vapor is used as the working fluid of the ejector 29 to inject the low-pressure refrigerant vapor generated in the generator 1, and the pressure of the medium-pressure refrigerant vapor at the outlet of the ejector 29 is between the high-pressure refrigerant vapor and the low-pressure refrigerant vapor. The medium-pressure refrigerant vapor enters the condenser 2, thereby increasing the condensing pressure. The ejector 29 plays the role of boosting in this system, and the condensing pressure can be increased to a certain extent according to the need.
一种冷凝升压的溴化锂喷射吸收式制冷循环系统的工作原理：发生器1在第一高位热源25的加热作用下，将其中的溴化锂溶液浓缩后产生的冷剂水蒸气通过第一冷剂水蒸气管路42引至喷射器29的被引射介质进口；冷凝器2冷凝下来的一部分冷剂水被储液装置33储存，冷剂水泵34从储液装置33抽取冷剂水并升压送至沸腾器30，冷剂水在沸腾器30内被第二高位热源35加热并产生高压冷剂水蒸汽经由第一连接管31进入喷射器29的工作介质进口，并在喷射器29内引射从第一冷剂水蒸气管路42引至发生器1产生的冷剂水蒸汽，并在喷射器29内混合后从出口流出并经由第三连接管11进入冷凝器2中冷凝。根据喷射器的工作原理，喷射器29的出口冷剂水蒸汽压力将高于被引射的发生器产生的冷剂水蒸汽压力，从而提高了冷凝器的冷凝压力，相应地也提高了冷凝温度。冷凝器2中冷凝过程释放的热量由第二冷却热源45吸收带走。冷凝器中冷凝产生的另一部分冷剂水经由膨胀节流装置8节流降压后通过冷剂水通路12进入蒸发器3中，在蒸发器3中，冷剂水吸收低位热源27的热量后蒸发为冷剂水蒸气，并通过第二冷剂水蒸气管路15输入吸收器5中被溴化锂溶液所吸收，吸收过程释放的热量由第一冷却热源26吸收带走。在吸收器5中吸收了冷剂水蒸气的溴化锂溶液浓度降低后，由溶液泵10驱动，通过第一稀溶液管路18输入发生器1中，在发生器1中进行加热浓缩，浓缩后产生的浓溶液通过第一浓溶液管路19返回吸收器5中继续吸收水蒸气，其中，第一浓溶液管路19和第一稀溶液管路18中的溴化锂溶液通过溶液换热器6进行热交换。如此循环工作，构成一种冷凝升压的溴化锂喷射吸收式制冷循环系统。The working principle of a condensing and boosting lithium bromide jet absorption refrigeration cycle system: under the heating of the first high-level heat source 25, the generator 1 condenses the lithium bromide solution in it to produce refrigerant water vapor through the first refrigerant water The steam pipeline 42 leads to the ejected medium inlet of the ejector 29; a part of the refrigerant water condensed by the condenser 2 is stored by the liquid storage device 33, and the refrigerant water pump 34 extracts the refrigerant water from the liquid storage device 33 and pumps it to To the boiler 30, the refrigerant water is heated by the second high-level heat source 35 in the boiler 30 and generates high-pressure refrigerant water vapor, enters the working medium inlet of the injector 29 through the first connecting pipe 31, and is ejected in the injector 29 The refrigerant water vapor generated from the first refrigerant water vapor pipeline 42 is led to the generator 1 , mixed in the ejector 29 , flows out from the outlet, and enters the condenser 2 through the third connecting pipe 11 for condensation. According to the working principle of the ejector, the outlet refrigerant water vapor pressure of the ejector 29 will be higher than the refrigerant water vapor pressure generated by the injected generator, thereby increasing the condensation pressure of the condenser and correspondingly increasing the condensation temperature . The heat released during the condensation process in the condenser 2 is absorbed and taken away by the second cooling heat source 45 . Another part of the refrigerant water produced by condensation in the condenser is throttled and depressurized by the expansion throttling device 8 and enters the evaporator 3 through the refrigerant water passage 12. In the evaporator 3, the refrigerant water absorbs the heat of the low-level heat source 27 Evaporate into refrigerant water vapor, and enter the absorber 5 through the second refrigerant water vapor pipeline 15 to be absorbed by the lithium bromide solution, and the heat released during the absorption process is absorbed and carried away by the first cooling heat source 26. After the concentration of the lithium bromide solution that has absorbed the refrigerant water vapor in the absorber 5 is reduced, it is driven by the solution pump 10, and is input into the generator 1 through the first dilute solution pipeline 18, and is heated and concentrated in the generator 1 to produce The concentrated solution returns to the absorber 5 through the first concentrated solution pipeline 19 to continue absorbing water vapor, wherein the lithium bromide solution in the first concentrated solution pipeline 19 and the first dilute solution pipeline 18 is heated through the solution heat exchanger 6 exchange. Working in such a cycle constitutes a lithium bromide injection absorption refrigeration cycle system with condensation and pressure boosting.
具体实施方式二：结合图1说明本实施方式，本实施方式的沸腾器30中产生的蒸汽为高压冷剂蒸汽，其压力高于发生器1中产生蒸汽的压力。高压冷剂蒸汽作为喷射器29的工作流体。其它组成及连接关系与具体实施方式一相同。Embodiment 2: This embodiment is described with reference to FIG. 1 . The steam generated in the boiler 30 of this embodiment is high-pressure refrigerant steam, and its pressure is higher than the pressure of the steam generated in the generator 1 . The high-pressure refrigerant vapor serves as the working fluid of the ejector 29 . Other components and connections are the same as those in the first embodiment.
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