CN215675915U - Absorption heat pump unit with single-effect and double-effect combined operation - Google Patents
Absorption heat pump unit with single-effect and double-effect combined operation Download PDFInfo
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- CN215675915U CN215675915U CN202121310540.1U CN202121310540U CN215675915U CN 215675915 U CN215675915 U CN 215675915U CN 202121310540 U CN202121310540 U CN 202121310540U CN 215675915 U CN215675915 U CN 215675915U
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Abstract
The utility model discloses an absorption heat pump unit with single-effect and double-effect combined operation, which comprises: the single-effect absorption heat pump comprises a single-effect heat pump generator, a single-effect heat pump absorber, a single-effect heat pump condenser and a single-effect heat pump evaporator; the double-effect absorption heat pump comprises a double-effect heat pump high-pressure generator, a double-effect heat pump low-pressure generator, a double-effect heat pump absorber, a double-effect heat pump condenser and a double-effect heat pump evaporator; the driving heat source pipeline is connected between the double-effect heat pump high-pressure generator and the single-effect heat pump generator so as to drive the double-effect absorption heat pump and the single-effect absorption heat pump; the hot water pipeline is connected with the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser in series, parallel or series-parallel; and the cold water pipeline is connected with the double-effect heat pump evaporator and the single-effect heat pump evaporator in series or in parallel.
Description
Technical Field
The utility model belongs to the technical field of energy utilization, and particularly relates to a single-effect and double-effect combined operation absorption heat pump unit.
Background
At present, in a traditional heat supply system of an absorption heat pump, a single-effect lithium bromide absorption heat pump system using lithium bromide as a working medium is rapidly developed due to the fact that high-parameter hot water can be provided, and the single-effect lithium bromide absorption heat pump system has high energy-saving benefit, short investment recovery period and the like. Meanwhile, the double-effect absorption heat pump system using the lithium bromide as the working medium has more remarkable energy-saving benefit, but the application occasion is limited to a certain extent due to slow development caused by low hot water outlet temperature.
SUMMERY OF THE UTILITY MODEL
Objects of the utility model
The utility model aims to provide a single-effect and double-effect combined operation absorption heat pump unit, wherein a double-effect heat pump absorber, a double-effect heat pump condenser, a single-effect heat pump absorber and a single-effect heat pump condenser are communicated in series, parallel or series-parallel, so that hot water is heated by the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser, and hot water with high outlet water temperature can be output.
(II) technical scheme
In order to solve the above problems, the present invention provides a single-effect and double-effect combined operation absorption heat pump unit, comprising: the single-effect absorption heat pump comprises a single-effect heat pump generator, a single-effect heat pump absorber, a single-effect heat pump condenser and a single-effect heat pump evaporator; the double-effect absorption heat pump comprises a double-effect heat pump high-pressure generator, a double-effect heat pump low-pressure generator, a double-effect heat pump absorber, a double-effect heat pump condenser and a double-effect heat pump evaporator; the driving heat source pipeline is connected with the double-effect heat pump high-pressure generator and the single-effect heat pump generator so as to drive the double-effect absorption heat pump and the single-effect absorption heat pump; the hot water pipeline is connected with the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser in series, parallel or series-parallel; and the cold water pipeline is connected with the double-effect heat pump evaporator and the single-effect heat pump evaporator in series or in parallel.
Optionally, the hot water pipeline is sequentially communicated with the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser; hot water in the hot water pipeline flows through the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser in sequence, is heated step by step and then is output.
Optionally, the hot water pipeline is divided into two branches connected in parallel, one branch is sequentially communicated with the single-effect heat pump absorber and the single-effect heat pump condenser, the other branch is sequentially communicated with the double-effect heat pump absorber and the double-effect heat pump condenser, and the two branches are converged and then output; the hot water in the hot water pipeline is divided into two paths, wherein one path of hot water sequentially flows through the single-effect heat pump absorber and the single-effect heat pump condenser, the other path of hot water sequentially flows through the double-effect heat pump absorber and the double-effect heat pump condenser, and the two paths of hot water are converged and then output.
Optionally, the hot water pipeline is divided into two branches connected in parallel, wherein one branch is communicated with the single-effect heat pump absorber, the other branch is communicated with the double-effect heat pump absorber, and the two branches are converged and then sequentially communicated with the double-effect heat pump condenser and the single-effect heat pump condenser; the hot water in the hot water pipeline is divided into two paths, wherein one path of hot water flows through the single-effect heat pump absorber, the other path of hot water flows through the double-effect heat pump absorber, and the two paths of hot water are converged and then sequentially flow through the double-effect heat pump condenser and the single-effect heat pump condenser to be output.
Optionally, the cold water pipeline is sequentially communicated with the single-effect heat pump evaporator and the double-effect heat pump evaporator; and cold water in the cold water pipeline flows through the single-effect heat pump evaporator and the double-effect heat pump evaporator in sequence to be cooled and then is output.
Optionally, the cold water pipeline is divided into two parallel branches, one branch is communicated with the double-effect heat pump evaporator, and the other branch is communicated with the single-effect heat pump evaporator; and cold water in the cold water pipeline is divided into two paths, wherein one path of cold water flows through the double-effect heat pump evaporator, the other path of cold water flows through the single-effect heat pump evaporator, and the two paths of cold water are converged and then output.
Optionally, the double-effect absorption heat pump further comprises a solution pipeline, and the solution pipeline is connected with the double-effect heat pump absorber, the double-effect heat pump high-pressure generator and the double-effect heat pump low-pressure generator in series, parallel or series-parallel.
Optionally, the solution pipeline is sequentially communicated with the double-effect heat pump absorber, the double-effect heat pump low-pressure generator and the double-effect heat pump high-pressure generator; the solution in the solution pipeline sequentially circulates and flows through the double-effect heat pump absorber, the double-effect heat pump low-pressure generator and the double-effect heat pump high-pressure generator; or a solution pipeline output by the double-effect heat pump absorber is divided into two branches, wherein one branch is communicated with the double-effect heat pump low-pressure generator, the other branch is communicated with the double-effect heat pump high-pressure generator, and the two branches are converged and then enter the double-effect heat pump absorber; the solution output by the double-effect heat pump absorber is divided into two paths, wherein one path of the solution flows through the double-effect heat pump low-pressure generator, the other path of the solution flows through the double-effect heat pump high-pressure generator, and the two paths of the solution are converged and then enter the double-effect heat pump absorber.
Optionally, the driving heat source is high-pressure steam, high-temperature hot water, fuel gas or high-temperature flue gas; the cold water is heat source water or exhaust steam.
Optionally, the single-effect absorption heat pump and the double-effect absorption heat pump both include a solution heat exchanger, and the solution heat exchanger is connected between the double-effect heat pump absorber and the double-effect heat pump low-pressure generator; and/or the solution heat exchanger is connected between the double-effect heat pump high-pressure generator and the double-effect heat pump low-pressure generator; and/or the solution heat exchanger is connected between the double-effect heat pump absorber and the double-effect heat pump high-pressure generator; and/or the solution heat exchanger is connected between the single-effect heat pump absorber and the single-effect heat pump generator.
Optionally, the double-effect heat pump low-pressure generator, the double-effect heat pump condenser, the single-effect heat pump generator and the single-effect heat pump condenser are all set to be single-stage or multi-stage; the double-effect heat pump low-pressure generators correspond to the double-effect heat pump condensers one by one, and the single-effect heat pump generators correspond to the single-effect heat pump condensers one by one; the double-effect heat pump high-pressure generator and the double-effect heat pump low-pressure generator are arranged in a single stage or multiple stages, and the double-effect heat pump high-pressure generator and the double-effect heat pump low-pressure generator are in one-to-one or one-to-many; the double-effect heat pump absorber, the double-effect heat pump evaporator, the single-effect heat pump absorber and the single-effect heat pump evaporator are all set to be single-stage or multi-stage; the double-effect heat pump absorbers correspond to the double-effect heat pump evaporators one by one; the single-effect heat pump absorber corresponds to the single-effect heat pump evaporator one by one.
(III) advantageous effects
The technical scheme of the utility model has the following beneficial technical effects:
the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser are communicated in series, parallel or series-parallel, so that hot water is heated by the double-effect heat pump absorber, the double-effect heat pump condenser, the single-effect heat pump absorber and the single-effect heat pump condenser, and hot water with high outlet water temperature can be output.
Drawings
Fig. 1 is a schematic structural view of a single-double effect combined operation absorption heat pump unit according to an alternative embodiment of the present invention;
figure 2 is a schematic structural diagram of a single-double effect combined operation absorption heat pump unit according to another alternative embodiment of the present invention;
figure 3 is a schematic structural view of a single and double effect combined operation absorption heat pump unit according to yet another alternative embodiment of the present invention;
reference numerals:
1-double effect heat pump high pressure generator; 2-double effect heat pump low pressure generator: 3-single-effect heat pump generator; 4-double effect heat pump absorber; 5-double effect heat pump evaporator; 6-double effect heat pump condenser; 8-single-effect heat pump absorber; 9-single-effect heat pump evaporator; 10-single-effect heat pump condenser; 11-driving the heat source pipeline; 12-hot water pipeline; 13-cold water pipeline;
71-double effect high temperature solution heat exchanger; 72-double effect cryogenic solution heat exchanger; 73-Single effect solution Heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the embodiment of the utility model, a single-effect absorption heat pump and double-effect absorption heat pump unit which operates in a combined mode is provided, and the single-effect absorption heat pump and double-effect absorption heat pump unit comprises a single-effect absorption heat pump, a double-effect absorption heat pump, a driving heat source pipeline 11, a hot water pipeline 12 and a cold water pipeline 13. The single-effect absorption heat pump comprises a single-effect heat pump generator 3, a single-effect heat pump absorber 8, a single-effect heat pump condenser 10 and a single-effect heat pump evaporator 9. The double-effect absorption heat pump comprises a double-effect heat pump high-pressure generator 1, a double-effect heat pump low-pressure generator 2, a double-effect heat pump absorber 4, a double-effect heat pump condenser 6 and a double-effect heat pump evaporator 5. And the driving heat source pipeline 11 is connected between the double-effect heat pump high-pressure generator 1 and the single-effect heat pump generator 3 so as to drive the double-effect absorption heat pump and the single-effect absorption heat pump. The hot water pipeline 12 is connected with the double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10 in series, parallel or series-parallel connection; and the cold water pipeline 13 is connected with the double-effect heat pump evaporator 5 and the single-effect heat pump evaporator 9 in series or in parallel, and the cold water pipeline 13 is connected with the single-effect heat pump evaporator 9 in series or in parallel. The double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10 are communicated in series, parallel or series-parallel, so that hot water is heated by the double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10, and hot water with high outlet water temperature can be output.
In some embodiments, the hot water pipeline 12 is sequentially communicated with the double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10; hot water in the hot water pipeline 12 sequentially flows through the double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10, and is heated step by step and then output. The hot water is finally output by the single-effect absorption heat pump, and the outlet temperature of the heated hot water can be higher and even can reach 90 ℃.
In some embodiments, the hot water pipeline 12 is divided into two branches connected in parallel, wherein one branch is sequentially communicated with the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10, the other branch is sequentially communicated with the double-effect heat pump absorber 4 and the double-effect heat pump condenser 6, and the two branches are merged and then output; the hot water in the hot water pipeline 12 is divided into two paths, wherein one path of hot water sequentially flows through the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10, the other path of hot water sequentially flows through the double-effect heat pump absorber 4 and the double-effect heat pump condenser 6, and the two paths of hot water are converged and then output. The hot water is finally converged by the single-effect absorption heat pump and the double-effect absorption heat pump and then output, the outlet temperature of the heated hot water can be higher, and the energy can be saved.
In some embodiments, the hot water pipeline 12 is divided into two branches connected in parallel, wherein one branch is communicated with the single-effect heat pump absorber 8, the other branch is communicated with the double-effect heat pump absorber 4, and the two branches are converged and then sequentially communicated with the double-effect heat pump condenser 6 and the single-effect heat pump condenser 10; the hot water in the hot water pipeline 12 is divided into two paths, wherein one path of hot water flows through the single-effect heat pump absorber 8, the other path of hot water flows through the double-effect heat pump absorber 4, and the two paths of hot water are converged and then sequentially flow through the double-effect heat pump condenser 6 and the single-effect heat pump condenser 10 to be output. The hot water is finally output by the single-effect absorption heat pump, the outlet temperature of the heated hot water can be higher, even can reach 90 ℃, and the hot water and the double-effect absorption heat pump are jointly operated, so that the heat energy can be fully utilized, and the better energy-saving benefit can be achieved.
In some embodiments, the cold water pipeline 10 is in communication with the single-effect heat pump evaporator 9 and the double-effect heat pump evaporator 5 in sequence; and cold water in the cold water pipeline 10 flows through the single-effect heat pump evaporator 9 and the double-effect heat pump evaporator 5 in sequence to be cooled and then is output. Cold water flows in through the single-effect heat pump evaporator 9 of the single-effect absorption heat pump, so that the inlet temperature of the cold water can be lower, and the waste heat of heat source water or exhaust steam can be effectively utilized. The inlet temperature of the cold water of the double-effect absorption heat pump is relatively not too low, so that the application range of the heat pump unit provided by the utility model can be expanded.
In some embodiments, the cold water pipeline 10 is divided into two branches connected in parallel, wherein one branch is communicated with the double-effect heat pump evaporator 5, and the other branch is communicated with the single-effect heat pump evaporator 9; the cold water in the cold water pipeline 10 is divided into two paths, wherein one path of cold water flows through the double-effect heat pump evaporator 5, the other path of cold water flows through the single-effect heat pump evaporator 9, and the two paths of cold water are converged and then output.
In some embodiments, the double-effect absorption heat pump further comprises a solution pipeline connecting the double-effect heat pump absorber 4, the double-effect heat pump high-pressure generator 1 and the double-effect heat pump low-pressure generator 2 in series, parallel or series-parallel. Similarly, the single-effect absorption heat pump also includes a solution pipeline, and the solution pipeline can be connected between the multistage single-effect heat pump absorber 8 and the single-effect heat pump generator 3 in series, parallel or series-parallel.
In some embodiments, the solution pipeline is communicated with the double-effect heat pump absorber 4, the double-effect heat pump low-pressure generator 2 and the double-effect heat pump high-pressure generator 1 in sequence; the solution in the solution pipeline sequentially circulates and flows through the double-effect heat pump absorber 4, the double-effect heat pump low-pressure generator 2 and the double-effect heat pump high-pressure generator 1; or, a solution pipeline output by the double-effect heat pump absorber 4 is divided into two branches, wherein one branch is communicated with the double-effect heat pump low-pressure generator 2, the other branch is communicated with the double-effect heat pump high-pressure generator 1, and the two branches are converged and then enter the double-effect heat pump absorber 4; the solution output by the double-effect heat pump absorber 4 is divided into two paths, wherein one path flows through the double-effect heat pump low-pressure generator 2, the other path flows through the double-effect heat pump high-pressure generator 1, and the two paths of solution are converged and then enter the double-effect heat pump absorber 4.
In some embodiments, the driving heat source is high-pressure steam, high-temperature hot water, gas or high-temperature flue gas; the cold water is heat source water or exhaust steam.
In some embodiments, the single-effect absorption heat pump and the double-effect absorption heat pump each comprise a solution heat exchanger connected between the double-effect heat pump absorber 4 and the double-effect heat pump low pressure generator 2, the solution heat exchanger being a double-effect low temperature solution heat exchanger 72; and/or the solution heat exchanger is connected between the double-effect heat pump high-pressure generator 1 and the double-effect heat pump low-pressure generator 2, and the solution heat exchanger is a double-effect high-temperature solution heat exchanger 71; and/or the solution heat exchanger is connected between the single-effect heat pump absorber 8 and the single-effect heat pump generator 3, and the solution heat exchanger is a single-effect solution heat exchanger 73; and/or the solution heat exchanger is connected between the double-effect heat pump absorber 4 and the double-effect heat pump high-pressure generator 1, and the solution heat exchanger is a double-effect high-temperature solution heat exchanger 71.
In some embodiments, the double-effect heat pump low-pressure generator 2, the double-effect heat pump condenser 6, the single-effect heat pump generator 3 and the single-effect heat pump condenser 10 are all arranged in a single stage or multiple stages; the double-effect heat pump low-pressure generators 2 correspond to the double-effect heat pump condensers 6 one by one, and the single-effect heat pump generators 3 correspond to the single-effect heat pump condensers 10 one by one; the double-effect heat pump high-pressure generator 1 and the double-effect heat pump low-pressure generator 2 are arranged in a single stage or a plurality of stages, and the double-effect heat pump high-pressure generator 1 and the double-effect heat pump low-pressure generator 2 are in one-to-one or one-to-many; the double-effect heat pump absorber 4, the double-effect heat pump evaporator 5, the single-effect heat pump absorber 8 and the single-effect heat pump evaporator 9 are all arranged in a single stage or multiple stages; the double-effect heat pump absorbers 4 correspond to the double-effect heat pump evaporators 5 one by one; the single-effect heat pump absorbers 8 correspond to the single-effect heat pump evaporators 9 one by one.
As shown in fig. 1, in an alternative embodiment of the present invention, a driving heat source is divided into two paths through a driving heat source pipeline 11 and is connected in parallel to enter a double-effect heat pump high-pressure generator 1 and a single-effect heat pump generator 3 as driving heat sources of the two; steam generated by the double-effect heat pump high-pressure generator 1 is used as a driving heat source of the double-effect heat pump low-pressure generator 2; steam generated by the double-effect heat pump low-pressure generator 2 enters a double-effect heat pump condenser 6 to be condensed and released, and hot water is heated; the refrigerant water generated in the double-effect heat pump condenser 6 enters the double-effect heat pump evaporator 5 to absorb heat and evaporate to form refrigerant steam; the refrigerant steam generated in the double-effect heat pump evaporator 5 enters the double-effect heat pump absorber 4, is absorbed by the concentrated solution in the double-effect heat pump absorber 4, and releases heat while the solution absorbs the refrigerant steam to heat hot water; steam generated by the single-effect heat pump generator 3 enters the single-effect heat pump condenser 10 to be condensed and released, and hot water is heated; the refrigerant water generated in the single-effect heat pump condenser 10 enters the single-effect heat pump evaporator 9 to absorb heat and evaporate to form refrigerant steam; refrigerant steam generated in the single-effect heat pump evaporator 9 enters the single-effect heat pump absorber 8 and is absorbed by the concentrated solution in the single-effect heat pump absorber 8, and the solution absorbs the refrigerant steam and releases heat to heat hot water; hot water sequentially enters the double-effect heat pump absorber 4, the double-effect heat pump condenser 6, the single-effect heat pump absorber 8 and the single-effect heat pump condenser 10 through a hot water pipeline 12, and is supplied to a heat user after being heated step by step; cold water enters the single-effect heat pump evaporator 9 and the double-effect heat pump evaporator 5 in sequence through the cold water pipeline 13, and waste heat is recycled; the concentrated solution entering the double-effect heat pump absorber 4 absorbs the refrigerant steam from the double-effect heat pump evaporator 5 to form a dilute solution; after flowing out of the double-effect heat pump absorber 4, the dilute solution enters a double-effect low-temperature solution heat exchanger 72 to be heated, and after being heated, the dilute solution enters a double-effect heat pump low-pressure generator 2 to be generated, so that an intermediate concentrated solution is formed; the intermediate concentrated solution formed in the double-effect heat pump low-pressure generator 2 enters the double-effect high-temperature solution heat exchanger 71 for further temperature rise, and enters the double-effect heat pump high-pressure generator 1 for generation after temperature rise to form concentrated solution; after flowing out of the double-effect heat pump high-pressure generator 1, the concentrated solution enters a double-effect high-temperature solution heat exchanger 71 and a double-effect low-temperature solution heat exchanger 72 in sequence to be used as a middle concentrated solution and a dilute solution on a high-temperature side and a low-temperature side of the high-temperature side for heat exchange and temperature reduction, the concentrated solution after the temperature reduction for two times enters a double-effect heat pump absorber 4, heat is absorbed and released in the double-effect heat pump absorber 4, and the dilute solution is formed while hot water is heated, so that a solution closed loop circulation loop is formed; the concentrated solution entering the single-effect heat pump absorber 8 absorbs the refrigerant steam from the single-effect heat pump evaporator 9 to form a dilute solution; the dilute solution flows out of the single-effect heat pump absorber 8, enters the single-effect solution heat exchanger 73 to be heated, and enters the single-effect heat pump generator 3 to be generated after being heated to form a concentrated solution; after flowing out from the single-effect heat pump generator 3, the concentrated solution enters the single-effect solution heat exchanger 73 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction, the concentrated solution after temperature reduction enters the single-effect heat pump absorber 8 to absorb heat in the single-effect heat pump absorber 8, and the dilute solution is formed while hot water is heated, so that the other solution closed-loop circulation loop is formed.
As shown in fig. 2, in another alternative embodiment of the present invention, the driving heat source is divided into two paths through a driving heat source pipeline 11 and enters the dual-effect heat pump high-pressure generator 1 and the single-effect heat pump generator 3 in parallel, which are used as the driving heat sources of the two; steam generated by the double-effect heat pump high-pressure generator 1 is used as a driving heat source of the double-effect heat pump low-pressure generator 2; steam generated by the double-effect heat pump low-pressure generator 2 enters a double-effect heat pump condenser 6 to be condensed and released, and hot water is heated; the refrigerant water generated in the double-effect heat pump condenser 6 enters the double-effect heat pump evaporator 5 to absorb heat and evaporate to form refrigerant steam; the refrigerant steam generated in the double-effect heat pump evaporator 5 enters the double-effect heat pump absorber 4, is absorbed by the concentrated solution in the double-effect heat pump absorber 4, and releases heat while the solution absorbs the refrigerant steam to heat hot water; steam generated by the single-effect heat pump generator 3 enters the single-effect heat pump condenser 10 to be condensed and released, and hot water is heated; the refrigerant water generated in the single-effect heat pump condenser 10 enters the single-effect heat pump evaporator 9 to absorb heat and evaporate to form refrigerant steam; refrigerant steam generated in the single-effect heat pump evaporator 9 enters the single-effect heat pump absorber 8 and is absorbed by the concentrated solution in the single-effect heat pump absorber 8, and the solution absorbs the refrigerant steam and releases heat to heat hot water; hot water is divided into two paths after entering through the hot water pipeline 12: one path of the heat pump enters a double-effect heat pump absorber 4 and a double-effect heat pump condenser 6 in sequence to be heated step by step; the other path of the hot water enters a single-effect heat pump absorber 8 and a single-effect heat pump condenser 10 in sequence to be heated step by step, and the two paths of the heated hot water are converged into one path of the hot water to be supplied to a hot user together; cold water enters the single-effect heat pump evaporator 9 and the double-effect heat pump evaporator 5 in sequence through the cold water pipeline 13, and waste heat is recycled; the concentrated solution entering the double-effect heat pump absorber 4 absorbs the refrigerant steam from the double-effect heat pump evaporator 5 to form a dilute solution; after flowing out of the double-effect heat pump absorber 4, the dilute solution is divided into two paths: one path enters a double-effect low-temperature solution heat exchanger 72 to be heated, and the heated path enters a double-effect heat pump low-pressure generator 2 to generate a concentrated solution; the other path enters a double-effect high-temperature solution heat exchanger 71 to be heated, and then enters a double-effect heat pump high-pressure generator 1 to be generated after the heating to form a concentrated solution; the concentrated solution flowing out of the double-effect heat pump low-pressure generator 2 enters a double-effect low-temperature solution heat exchanger 72 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction; the concentrated solution flowing out of the double-effect heat pump high-pressure generator 1 enters a double-effect high-temperature solution heat exchanger 71 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction; the two paths of concentrated solutions cooled in the double-effect low-temperature solution heat exchanger 72 and the double-effect high-temperature solution heat exchanger 71 flow out and then are merged into one path, the two paths of concentrated solutions jointly enter the double-effect heat pump absorber 4, heat is absorbed and released in the double-effect heat pump absorber 4, and a dilute solution is formed while hot water is heated, so that a closed loop circulation loop of the solution is formed; the concentrated solution entering the single-effect heat pump absorber 8 absorbs the refrigerant steam from the single-effect heat pump evaporator 9 to form a dilute solution; the dilute solution flows out of the single-effect heat pump absorber 8, enters the single-effect solution heat exchanger 73 to be heated, and enters the single-effect heat pump generator 3 to be generated after being heated to form a concentrated solution; after flowing out from the single-effect heat pump generator 3, the concentrated solution enters the single-effect solution heat exchanger 73 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction, the concentrated solution after temperature reduction enters the single-effect heat pump absorber 8 to absorb heat in the single-effect heat pump absorber 8, and the dilute solution is formed while hot water is heated, so that the other solution closed-loop circulation loop is formed.
As shown in fig. 3, in another alternative embodiment of the present invention, the driving heat source enters the dual-effect heat pump high-pressure generator 1 and the single-effect heat pump generator 3 in parallel through the driving heat source pipeline 11 as the driving heat sources of the two; steam generated by the double-effect heat pump high-pressure generator 1 is used as a driving heat source of the double-effect heat pump low-pressure generator 2; steam generated by the double-effect heat pump low-pressure generator 2 enters a double-effect heat pump condenser 6 to be condensed and released, and hot water is heated; the refrigerant water generated in the double-effect heat pump condenser 6 enters the double-effect heat pump evaporator 5 to absorb heat and evaporate to form refrigerant steam; the refrigerant steam generated in the double-effect heat pump evaporator 5 enters the double-effect heat pump absorber 4, is absorbed by the concentrated solution in the double-effect heat pump absorber 4, and releases heat while the solution absorbs the refrigerant steam to heat hot water; steam generated by the single-effect heat pump generator 3 enters the single-effect heat pump condenser 10 to be condensed and released, and hot water is heated; the refrigerant water generated in the single-effect heat pump condenser 10 enters the single-effect heat pump evaporator 9 to absorb heat and evaporate to form refrigerant steam; refrigerant steam generated in the single-effect heat pump evaporator 9 enters the single-effect heat pump absorber 8 and is absorbed by the concentrated solution in the single-effect heat pump absorber 8, and the solution absorbs the refrigerant steam and releases heat to heat hot water; hot water is divided into two paths after entering through the hot water pipeline 12: one path enters a double-effect heat pump absorber 4 to be heated; the other path enters a single-effect heat pump absorber 8 to be heated, the two paths of heated hot water are converged into one path, and then sequentially enter a double-effect heat pump condenser 6 and a single-effect heat pump condenser 10 to be heated step by step, and the heated hot water is supplied to a heat user; cold water is divided into two paths after entering through a cold water pipeline 13, and the two paths of cold water are connected in parallel and enter the single-effect heat pump evaporator 9 and the double-effect heat pump evaporator 5 for cooling respectively, waste heat is recycled, and the cold water is converged into one path after being cooled and flows out; the concentrated solution entering the double-effect heat pump absorber 4 absorbs the refrigerant steam from the double-effect heat pump evaporator 5 to form a dilute solution; after flowing out of the double-effect heat pump absorber 4, the dilute solution is divided into two paths: one path enters a double-effect low-temperature solution heat exchanger 72 to be heated, and the heated path enters a double-effect heat pump low-pressure generator 2 to generate a concentrated solution; the other path enters a double-effect high-temperature solution heat exchanger 71 to be heated, and then enters a double-effect heat pump high-pressure generator 1 to be generated after the heating to form a concentrated solution; the concentrated solution flowing out of the double-effect heat pump low-pressure generator 2 enters a double-effect low-temperature solution heat exchanger 72 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction; the concentrated solution flowing out of the double-effect heat pump high-pressure generator 1 enters a double-effect high-temperature solution heat exchanger 71 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction; the two paths of concentrated solutions cooled in the double-effect low-temperature solution heat exchanger 72 and the double-effect high-temperature solution heat exchanger 71 flow out and then are merged into one path, the two paths of concentrated solutions jointly enter the double-effect heat pump absorber 4, heat is absorbed and released in the double-effect heat pump absorber 4, and a dilute solution is formed while hot water is heated, so that a closed loop circulation loop of the solution is formed; the concentrated solution entering the single-effect heat pump absorber 8 absorbs the refrigerant steam from the single-effect heat pump evaporator 9 to form a dilute solution; the dilute solution flows out of the single-effect heat pump absorber 8, enters the single-effect solution heat exchanger 73 to be heated, and enters the single-effect heat pump generator 3 to be generated after being heated to form a concentrated solution; after flowing out from the single-effect heat pump generator 3, the concentrated solution enters the single-effect solution heat exchanger 73 to be used as a dilute solution at the high-temperature side and the low-temperature side for heat exchange and temperature reduction, the concentrated solution after temperature reduction enters the single-effect heat pump absorber 8 to absorb heat in the single-effect heat pump absorber 8, and the dilute solution is formed while hot water is heated, so that the other solution closed-loop circulation loop is formed.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (11)
1. A single-double effect combined operation absorption heat pump unit is characterized by comprising:
the single-effect absorption heat pump comprises a single-effect heat pump generator (3), a single-effect heat pump absorber (8), a single-effect heat pump condenser (10) and a single-effect heat pump evaporator (9);
the double-effect absorption heat pump comprises a double-effect heat pump high-pressure generator (1), a double-effect heat pump low-pressure generator (2), a double-effect heat pump absorber (4), a double-effect heat pump condenser (6) and a double-effect heat pump evaporator (5);
the driving heat source pipeline (11) is connected between the double-effect heat pump high-pressure generator (1) and the single-effect heat pump generator (3) to drive the double-effect absorption heat pump and the single-effect absorption heat pump;
the hot water pipeline (12), the said hot water pipeline (12) connects the double-effect heat pump absorber (4), the double-effect heat pump condenser (6), the single-effect heat pump absorber (8) and the single-effect heat pump condenser (10) in series, parallel or series-parallel; and
and the cold water pipeline (13) is connected with the double-effect heat pump evaporator (5) and the single-effect heat pump evaporator (9) in series or in parallel, and the cold water pipeline (13) is connected with the single-effect heat pump evaporator (9) in series or in parallel.
2. The single-double effect combined operation absorption heat pump unit according to claim 1, wherein the hot water pipeline (12) is sequentially communicated with the double effect heat pump absorber (4), the double effect heat pump condenser (6), the single effect heat pump absorber (8) and the single effect heat pump condenser (10);
and hot water in the hot water pipeline (12) sequentially flows through the double-effect heat pump absorber (4), the double-effect heat pump condenser (6), the single-effect heat pump absorber (8) and the single-effect heat pump condenser (10), is heated step by step and is then output.
3. The absorption heat pump unit operated by single or double effect combination according to claim 1, wherein the hot water pipeline (12) is divided into two branches connected in parallel, one branch is sequentially communicated with the single effect heat pump absorber (8) and the single effect heat pump condenser (10), the other branch is sequentially communicated with the double effect heat pump absorber (4) and the double effect heat pump condenser (6), and the two branches are converged and then output;
the hot water in the hot water pipeline (12) is divided into two paths, wherein one path of hot water sequentially flows through the single-effect heat pump absorber (8) and the single-effect heat pump condenser (10), the other path of hot water sequentially flows through the double-effect heat pump absorber (4) and the double-effect heat pump condenser (6), and the two paths of hot water are converged and then output.
4. The absorption heat pump unit operated by single or double effect in combination according to claim 1, wherein the hot water pipeline (12) is divided into two branches connected in parallel, one branch is communicated with the single effect heat pump absorber (8), the other branch is communicated with the double effect heat pump absorber (4), and the two branches are converged and then sequentially communicated with the double effect heat pump condenser (6) and the single effect heat pump condenser (10);
the hot water in the hot water pipeline (12) is divided into two paths, wherein one path of hot water flows through the single-effect heat pump absorber (8), the other path of hot water flows through the double-effect heat pump absorber (4), and the two paths of hot water are converged and then sequentially flow through the double-effect heat pump condenser (6) and the single-effect heat pump condenser (10) to be output.
5. The single-effect and double-effect combined operation absorption heat pump unit according to claim 1, wherein the cold water pipeline (13) is communicated with the single-effect heat pump evaporator (9) and the double-effect heat pump evaporator (5) in sequence;
and cold water in the cold water pipeline (13) flows through the single-effect heat pump evaporator (9) and the double-effect heat pump evaporator (5) in sequence to be cooled and then is output.
6. The single-effect and double-effect combined operation absorption heat pump unit according to claim 1, wherein the cold water pipeline (13) is divided into two branches connected in parallel, wherein one branch is communicated with the double-effect heat pump evaporator (5), and the other branch is communicated with the single-effect heat pump evaporator (9);
and cold water in the cold water pipeline (13) is divided into two paths, wherein one path of cold water flows through the double-effect heat pump evaporator (5), the other path of cold water flows through the single-effect heat pump evaporator (9), and the two paths of cold water are converged and then output.
7. The single-effect and double-effect combined operation absorption heat pump unit according to claim 1, wherein the double-effect absorption heat pump further comprises a solution pipeline connecting the double-effect heat pump absorber (4), the double-effect heat pump high pressure generator (1) and the double-effect heat pump low pressure generator (2) in series, parallel or series-parallel.
8. The absorption heat pump unit operating in combination of single and double effects according to claim 7, wherein the solution pipeline is in communication with the double effect heat pump absorber (4), the double effect heat pump low pressure generator (2) and the double effect heat pump high pressure generator (1) in sequence; the solution in the solution pipeline sequentially circulates and flows through the double-effect heat pump absorber (4), the double-effect heat pump low-pressure generator (2) and the double-effect heat pump high-pressure generator (1); alternatively, the first and second electrodes may be,
a solution pipeline output by the double-effect heat pump absorber (4) is divided into two branches, wherein one branch is communicated with the double-effect heat pump low-pressure generator (2), the other branch is communicated with the double-effect heat pump high-pressure generator (1), and the two branches are converged and then enter the double-effect heat pump absorber (4); the solution output by the double-effect heat pump absorber (4) is divided into two paths, wherein one path of solution flows through the double-effect heat pump low-pressure generator (2), the other path of solution flows through the double-effect heat pump high-pressure generator (1), and the two paths of solution are converged and then enter the double-effect heat pump absorber (4).
9. The absorption heat pump unit operated in combination of single or double effects according to claim 1, wherein the driving heat source is high pressure steam, high temperature hot water, fuel gas or high temperature flue gas;
the cold water is heat source water or exhaust steam.
10. The single-effect and double-effect co-operating absorption heat pump unit according to claim 1, wherein the single-effect absorption heat pump and the double-effect absorption heat pump each comprise a solution heat exchanger connected between the double-effect heat pump absorber (4) and the double-effect heat pump low pressure generator (2); and/or the presence of a gas in the gas,
the solution heat exchanger is connected between the double-effect heat pump high-pressure generator (1) and the double-effect heat pump low-pressure generator (2); and/or the presence of a gas in the gas,
the solution heat exchanger is connected between the double-effect heat pump absorber (4) and the double-effect heat pump high-pressure generator (1); and/or the presence of a gas in the gas,
the solution heat exchanger is connected between the single-effect heat pump absorber (8) and the single-effect heat pump generator (3).
11. The single-double effect combined operation absorption heat pump unit according to claim 1, wherein the double effect heat pump low pressure generator (2), the double effect heat pump condenser (6), the single effect heat pump generator (3) and the single effect heat pump condenser (10) are all arranged in a single stage or multiple stages;
the double-effect heat pump low-pressure generators (2) correspond to the double-effect heat pump condensers (6) one by one, and the single-effect heat pump generators (3) correspond to the single-effect heat pump condensers (10) one by one;
the double-effect heat pump high-pressure generator (1) and the double-effect heat pump low-pressure generator (2) are arranged in a single stage or a plurality of stages, and the double-effect heat pump high-pressure generator (1) and the double-effect heat pump low-pressure generator (2) are arranged in a one-to-one or one-to-many manner;
the double-effect heat pump absorber (4), the double-effect heat pump evaporator (5), the single-effect heat pump absorber (8) and the single-effect heat pump evaporator (9) are all arranged in a single stage or a plurality of stages;
the double-effect heat pump absorbers (4) correspond to the double-effect heat pump evaporators (5) one by one; the single-effect heat pump absorbers (8) are in one-to-one correspondence with the single-effect heat pump evaporators (9).
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