CN217110077U - Two-stage first-class lithium bromide absorption heat pump unit - Google Patents
Two-stage first-class lithium bromide absorption heat pump unit Download PDFInfo
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- CN217110077U CN217110077U CN202121241958.1U CN202121241958U CN217110077U CN 217110077 U CN217110077 U CN 217110077U CN 202121241958 U CN202121241958 U CN 202121241958U CN 217110077 U CN217110077 U CN 217110077U
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- pump
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 48
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 29
- 239000006096 absorbing agent Substances 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000001704 evaporation Methods 0.000 claims abstract description 14
- 230000008020 evaporation Effects 0.000 claims abstract description 14
- 239000003507 refrigerant Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 description 17
- 239000002918 waste heat Substances 0.000 description 9
- 239000003245 coal Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model relates to a two-stage first-type lithium bromide absorption heat pump unit, an evaporation absorber grading clapboard in an evaporation absorber cylinder of the unit divides the inside of the evaporation absorber cylinder into a first-stage cavity and a second-stage cavity, a first-stage generator and a first-stage absorber are arranged in the first-stage cavity, and an evaporator and a second-stage absorber are arranged in the second-stage cavity; the second-stage absorber, the first-stage generation pump, the first-stage heat exchanger, the first-stage generator, the absorption pump and the solution communicating pipes among the components form a first-stage solution circulating system, and the first-stage absorber, the second-stage generation pump, the second-stage heat exchanger, the second-stage generator and the solution communicating pipes among the components form a second-stage solution circulating system. The utility model discloses a two-stage generator, two-stage absorber structure reduce one-level generator and two-stage generator's emergence temperature by a wide margin to the lower high temperature heat medium of available temperature (like hot water, steam or the conduction oil more than temperature 85 ℃) heats lithium bromide solution as compensation heat energy.
Description
Technical Field
The utility model relates to an air conditioning equipment technical field, concretely relates to first type lithium bromide absorption heat pump unit of two-stage type.
Background
A conventional single-effect first-type lithium bromide absorption heat pump unit is shown in fig. 1, and the unit is composed of an evaporator 3, an absorber 34, a generator 36, a condenser 23, a heat exchanger 35, a solution pump 33, a refrigerant pump 4, a control system (not shown in the figure), and pipelines and valves for connecting various components, wherein a medium-temperature hot water flow of the unit is a positive series flow (medium-temperature hot water is firstly absorbed by the absorber and then is discharged from the unit through the condenser), and the generator 36 and the absorber 34 are both of a single-stage structure. When the unit operates, the heat of high-temperature heat medium (hot water, heat conducting oil, steam and the like) entering the generator 36 is used as compensation heat energy, the heat of residual heat water entering and exiting the evaporator 3 is recovered, and medium-temperature hot water with the temperature higher than the temperature of the residual heat water for process or building heating is externally provided. The machine set has high requirement on the temperature of the high-temperature heat medium (generally steam with the pressure of more than 0.4MPa and hot water or heat conducting oil with the temperature of more than 115 ℃) and is not suitable for places with low temperature of the high-temperature heat medium.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough, a first type lithium bromide absorption heat pump unit of two-stage type is provided, through increase one-level generator on original single-effect first type lithium bromide absorption heat pump unit basis, the one-level absorber, one-level heat exchanger and a generating pump, an absorbing pump, make the unit become the two-stage and take place two-stage absorption structure, thereby the lower high temperature heat medium of available temperature (like the hot water more than temperature 85 ℃, steam or conduction oil) is as compensating heat energy, the applicable condition of first type lithium bromide absorption heat pump unit has effectively been widened, be favorable to promoting waste heat recovery and utilize and reduce high-grade heat energy consumption.
The purpose of the utility model is realized like this:
a two-stage first-type lithium bromide absorption heat pump unit comprises an evaporator, an absorber, a generator, a condenser, a heat exchanger, a solution pump and a refrigerant pump, wherein the absorber comprises a first-stage absorber and a second-stage absorber, the generator comprises a first-stage generator and a second-stage generator, the heat exchanger comprises a first-stage heat exchanger and a second-stage heat exchanger, the solution pump comprises a first-stage generating pump, a second-stage generating pump and an absorption pump,
an evaporation absorber grading clapboard is arranged in an evaporation absorber cylinder of the unit and divides the inside of the evaporation absorber cylinder into a primary cavity and a secondary cavity, a primary generator and a primary absorber are arranged in the primary cavity, and an evaporator and a secondary absorber are arranged in the secondary cavity;
the second-stage absorber, the first-stage generation pump, the first-stage heat exchanger, the first-stage generator, the absorption pump and the solution communicating pipes among the components form a first-stage solution circulating system, and the first-stage absorber, the second-stage generation pump, the second-stage heat exchanger, the second-stage generator and the solution communicating pipes among the components form a second-stage solution circulating system.
Preferably, the high-temperature heat medium flow of the first-stage generator and the second-stage generator is a forward series flow, a reverse series flow or a parallel flow.
Preferably, the medium-temperature hot water flow of the secondary absorber, the primary absorber and the condenser is a forward series flow, an inverse series flow or a parallel series flow.
The utility model has the advantages that:
the utility model discloses unit generator and absorber adopt the two-stage generator, the two-stage absorber structure, reduce one-level generator and second grade generator's emergence temperature by a wide margin to the lower high temperature heat medium of available temperature (like hot water more than 85 ℃, steam or conduction oil) heats lithium bromide solution as compensation heat energy, drive unit carries out waste heat recovery heat supply operation, the applicable condition of first type lithium bromide absorption heat pump unit has effectively been widened, be favorable to promoting waste heat recovery and utilize and reduce high-grade heat energy consumption.
Drawings
Fig. 1 is a schematic structural diagram of a single-effect first-type lithium bromide absorption heat pump unit in the prior art.
Fig. 2 is a schematic structural view of a two-stage first-type lithium bromide absorption heat pump unit according to the present invention in a first embodiment.
Fig. 3 is a schematic structural view of a two-stage first-type lithium bromide absorption heat pump unit according to the second embodiment of the present invention.
Fig. 4 is a schematic structural view of a two-stage first-type lithium bromide absorption heat pump unit according to a third embodiment of the present invention.
Fig. 5 is a schematic structural view of a two-stage first-type lithium bromide absorption heat pump unit according to a fourth embodiment of the present invention.
Fig. 6 is a schematic structural view of a two-stage first-type lithium bromide absorption heat pump unit according to a fifth embodiment of the present invention.
Wherein: 1-second-stage absorber, 2-first-stage generation pump, 3-evaporator, 4-refrigerant pump, 5-first-stage absorber, 6-first-stage generation pump liquid outlet pipe, 7-second-stage generation pump, 8-first-stage generator, 9-absorption pump, 10-second-stage generation pump liquid outlet pipe, 11-first-stage heat exchanger, 12-first-stage generator liquid outlet pipe, 13-first-stage generator liquid inlet pipe, 14-high-temperature heat medium inlet pipe, 15-first-stage cavity, 16-second-stage heat exchanger, 17-first-stage absorber liquid inlet pipe, 18-high-temperature heat medium outlet pipe, 19-second-stage generator liquid inlet pipe, 20-second-stage generator liquid outlet pipe, 21-second-stage generator heat medium inlet pipe, 22-second-stage generator, 23-condenser, 24-medium-temperature hot water outlet pipe, refrigerant outlet pipe, heat exchanger, 25-absorber water outlet pipe, 26-evaporator absorber grading baffle, 27-evaporator absorber cylinder, 28-secondary chamber, 29-waste heat water outlet pipe, 30-waste heat water inlet pipe, 31-secondary absorber liquid inlet pipe, 32-medium temperature hot water inlet pipe, 33-solution pump, 34-absorber, 35-heat exchanger, 36-generator, 37-secondary generator heat medium outlet pipe, 38-primary generator heat medium inlet pipe, 39-primary generator heat medium outlet pipe and 40-condenser water outlet pipe.
Detailed Description
Referring to fig. 2, the present invention relates to a two-stage first-type lithium bromide absorption heat pump unit, which is composed of an evaporator 3, an absorber, a generator, a condenser, a heat exchanger, a solution pump, a refrigerant pump, a control system (not shown in the figure), and pipelines and valves connecting the components. Wherein, the absorber comprises a first-stage absorber 5 and a second-stage absorber 1, the generator comprises a first-stage generator 8 and a second-stage generator 22, the heat exchanger comprises a first-stage heat exchanger 11 and a second-stage heat exchanger 16, and the solution pump comprises a first-stage generating pump 2, a second-stage generating pump 7 and an absorption pump 9. An evaporation absorber grading clapboard 26 is arranged in an evaporation absorber cylinder 27 of the unit, the evaporation absorber grading clapboard 26 divides the inside of the evaporation absorber cylinder 27 into a primary chamber 15 and a secondary chamber 28, a primary generator 8 and a primary absorber 5 are arranged in the primary chamber 15, and an evaporator 3 and a secondary absorber 1 are arranged in the secondary chamber 28. A primary generator pump liquid outlet pipe 6 is used as a low-temperature dilute solution inlet pipe of a primary heat exchanger 11 and connected to the primary heat exchanger 11, and a dilute solution outlet pipe of the primary heat exchanger 11 is a primary generator liquid inlet pipe 13 and is connected to the primary generator 8; a concentrated solution outlet pipe of the first-stage generator 8, namely a first-stage generator liquid outlet pipe 12, is connected to the first-stage heat exchanger 11 as a high-temperature concentrated solution inlet pipe of the first-stage heat exchanger 11, and an absorption pump 9 is arranged on the first-stage generator liquid outlet pipe 12; the concentrated solution outlet pipe of the first-stage heat exchanger 11 is the liquid inlet pipe 31 of the second-stage absorber and is connected to the second-stage absorber 1, so that the second-stage absorber 1, the first-stage generating pump 2, the first-stage heat exchanger 11, the first-stage generator 8, the absorbing pump 9 and solution communicating pipes among all the components form a first-stage solution circulating system. A secondary generator pump liquid outlet pipe 10 is used as a low-temperature dilute solution inlet pipe of a secondary heat exchanger 16 and connected to the secondary heat exchanger 16, and a dilute solution outlet pipe of the secondary heat exchanger 16 is a secondary generator liquid inlet pipe 19 and is connected to a secondary generator 22; a concentrated solution outlet pipe of the secondary generator 22, namely a secondary generator liquid outlet pipe 20, is used as a high-temperature concentrated solution inlet pipe of the secondary heat exchanger 16 and connected to the secondary heat exchanger 16, and a concentrated solution outlet pipe of the secondary heat exchanger 16, namely a primary absorber liquid inlet pipe 17, is connected to the primary absorber 5, so that the primary absorber 5, the secondary generating pump 7, the secondary heat exchanger 16, the secondary generator 22 and solution communicating pipes among all parts form a secondary solution circulating system. The high-temperature heat medium flow of the primary generator 8 and the secondary generator 22 is a positive series flow, a high-temperature heat medium inlet pipe 14 of the unit is connected to the primary generator 8, a heat medium outlet pipe of the primary generator 8 is connected to the secondary generator 22 as a secondary generator heat medium inlet pipe 21 of the secondary generator 22, and a high-temperature heat medium outlet pipe 18 is connected from the secondary generator 22; the flow of the medium temperature hot water of the secondary absorber 1, the primary absorber 5 and the condenser 23 is a positive series flow, a medium temperature hot water inlet pipe 32 of the unit is connected to the secondary absorber 1, a medium temperature hot water outlet pipe of the absorber, namely an absorber water outlet pipe 25, is connected from the primary absorber 5 and is used as the medium temperature hot water inlet pipe of the condenser 23 to be connected to the condenser 23, and a medium temperature hot water outlet pipe 24 is connected from the condenser 23. The mode is more suitable for application places with larger temperature difference between the high-temperature hot coal inlet and the high-temperature hot coal outlet and higher requirement on the temperature of the medium-temperature hot water outlet.
When the unit operates, the primary solution circulating system and the secondary solution circulating system synchronously cooperate with each other to operate. The high-temperature heating medium enters the unit through a high-temperature heating medium inlet pipe 14, sequentially enters the primary generator 8 and the secondary generator 22, heats the lithium bromide solution in the generators, and then exits the unit through a high-temperature heating medium outlet pipe 18. The waste heat water enters the heat exchange tube bundle of the unit evaporator 3 through the waste heat water inlet pipe 30, is evaporated by the refrigerant water outside the heat exchange tube bundle to absorb heat and reduce temperature, and then exits the unit through the waste heat water outlet pipe 29. The medium temperature hot water enters the unit through the medium temperature hot water inlet pipe 32, sequentially enters the secondary absorber 1, the primary absorber 5 and the condenser 23, is heated by the absorption heat in the absorber and the condensation heat in the condenser 23, and then exits the unit through the medium temperature hot water outlet pipe 24. Since the high-temperature refrigerant vapor generated in the primary generator 8 directly enters the primary absorber 5 and is absorbed by the concentrated solution from the secondary generator 22, the working pressure in the primary chamber 15 is much lower than the working pressures of the secondary generator 22 and the condenser 23, thereby greatly reducing the solution generation temperature in the primary generator 8 (the generation temperature can be reduced to about 80 ℃). Meanwhile, under the cooling action of the medium-temperature hot water in the heat exchange tube bundle of the primary absorber 5 and the pressure environment in the primary cavity 15, the concentration of the dilute solution in the primary absorber 5 can be greatly reduced to be below 45%, and after the dilute solution enters the secondary generator 22, the solution generation temperature of the secondary generator 22 can be greatly reduced to about 80 ℃, so that the lithium bromide solution can be heated by a high-temperature heating medium with the temperature of above 85 ℃, and a unit is driven to perform waste heat recovery and heat supply operation.
Second embodiment referring to fig. 3, the flow of the high temperature heat medium of the primary generator 8 and the secondary generator 22 is an inverse series flow, the high temperature heat medium inlet pipe 14 of the unit is connected to the secondary generator 22, the high temperature heat medium outlet pipe of the secondary generator 22, the secondary generator heat medium outlet pipe 37, is connected to the primary generator 8 as the high temperature heat medium inlet pipe of the primary generator 8, and the high temperature heat medium outlet pipe 18 is connected from the primary generator 8. The rest of the structure is the same as that of the first embodiment. The mode is more suitable for application places with larger temperature difference between the inlet and the outlet of the high-temperature hot coal and higher temperature of the residual heat water outlet.
Third embodiment referring to fig. 4, the high temperature heat medium flow path of the primary generator 8 and the secondary generator 22 is a parallel flow path, and the high temperature heat medium inlet pipe of the primary generator 8, the primary generator heat medium inlet pipe 38, and the high temperature heat medium inlet pipe of the secondary generator 22, the secondary generator heat medium inlet pipe 21 are simultaneously connected from the high temperature heat medium inlet pipe 14 of the unit, and the high temperature heat medium outlet pipe of the primary generator 8, the primary generator heat medium outlet pipe 39, and the high temperature heat medium outlet pipe of the secondary generator 22, the secondary generator heat medium outlet pipe 37, are simultaneously connected to the high temperature heat medium outlet pipe 18 of the unit. The remaining structure is the same as that of the first embodiment. The mode is more suitable for application places with smaller temperature difference between the inlet and the outlet of the high-temperature hot coal and higher requirement on the temperature of the outlet of the medium-temperature hot water.
Fourth embodiment referring to fig. 5, the medium temperature hot water flow paths of the two-stage absorber 1, the one-stage absorber 5 and the condenser 23 are parallel-series flow paths. The medium temperature hot water flow of the secondary absorber 1 and the primary absorber 5 is a parallel flow, the medium temperature hot water inlet pipe 32 is divided into two branch pipes to be respectively connected to the primary absorber 1 and the secondary absorber 5, the absorber water outlet pipe 25 is a medium temperature water outlet merging pipe of the primary absorber 1 and the secondary absorber 5, the absorber water outlet pipe 25 is used as a medium temperature hot water inlet pipe of the condenser 23 and is connected to the condenser 23, and the medium temperature hot water outlet pipe 24 is connected from the condenser 23. The remaining structure is the same as that of the first embodiment. The mode is more suitable for application places with larger temperature difference of the high-temperature heating medium inlet and the high-medium-temperature hot water inlet.
Fifth embodiment referring to fig. 6, the medium temperature hot water flow of the secondary absorber 1, the primary absorber 5 and the condenser 23 is an inverse series flow. The medium temperature hot water inlet pipe 32 is used as the medium temperature hot water inlet pipe of the condenser 23 and connected to the condenser 23, the medium temperature hot water outlet pipe of the condenser 23, namely the condenser outlet pipe 40 is used as the medium temperature hot water inlet pipe of the secondary absorber 1 and connected to the secondary absorber 1, the medium temperature hot water flow path structures of the secondary absorber 1 and the primary absorber 5 are in a series structure, and the medium temperature hot water outlet pipe 24 is connected from the primary absorber 5. The remaining structure is the same as that of the first embodiment. The mode is more suitable for application places with larger temperature difference between the high-temperature hot coal inlet and the high-temperature hot coal outlet and lower temperature of the medium-temperature hot water inlet.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. The utility model provides a first type lithium bromide absorption heat pump unit of two-stage type, includes evaporimeter (3), absorber, generator, condenser (23), heat exchanger, solution pump and refrigerant pump, its characterized in that: the absorber comprises a first-stage absorber (5) and a second-stage absorber (1), the generator comprises a first-stage generator (8) and a second-stage generator (22), the heat exchanger comprises a first-stage heat exchanger (11) and a second-stage heat exchanger (16), the solution pump comprises a first-stage generating pump (2), a second-stage generating pump (7) and an absorption pump (9),
an evaporation absorber grading clapboard (26) is arranged in an evaporation absorber cylinder (27) of the unit, the evaporation absorber grading clapboard (26) divides the inside of the evaporation absorber cylinder (27) into a primary chamber (15) and a secondary chamber (28), a primary generator (8) and a primary absorber (5) are arranged in the primary chamber (15), and an evaporator (3) and a secondary absorber (1) are arranged in the secondary chamber (28);
the secondary absorber (1), the primary generating pump (2), the primary heat exchanger (11), the primary generator (8), the absorbing pump (9) and solution communicating pipes among all the components form a primary solution circulating system, and the primary absorber (5), the secondary generating pump (7), the secondary heat exchanger (16), the secondary generator (22) and solution communicating pipes among all the components form a secondary solution circulating system.
2. The two-stage type first-type lithium bromide absorption heat pump unit according to claim 1, wherein: the high-temperature heat medium flow of the first-stage generator (8) and the second-stage generator (22) is a positive series flow, a reverse series flow or a parallel flow.
3. The two-stage type first-type lithium bromide absorption heat pump unit according to claim 1 or 2, characterized in that: the medium temperature hot water flow of the secondary absorber (1), the primary absorber (5) and the condenser (23) is a forward series flow, an inverse series flow or a parallel series flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121241958.1U CN217110077U (en) | 2021-06-04 | 2021-06-04 | Two-stage first-class lithium bromide absorption heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121241958.1U CN217110077U (en) | 2021-06-04 | 2021-06-04 | Two-stage first-class lithium bromide absorption heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217110077U true CN217110077U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121241958.1U Withdrawn - After Issue CN217110077U (en) | 2021-06-04 | 2021-06-04 | Two-stage first-class lithium bromide absorption heat pump unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217110077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266958A (en) * | 2021-06-04 | 2021-08-17 | 双良节能系统股份有限公司 | Two-stage first-class lithium bromide absorption heat pump unit |
-
2021
- 2021-06-04 CN CN202121241958.1U patent/CN217110077U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266958A (en) * | 2021-06-04 | 2021-08-17 | 双良节能系统股份有限公司 | Two-stage first-class lithium bromide absorption heat pump unit |
| CN113266958B (en) * | 2021-06-04 | 2024-06-25 | 双良节能系统股份有限公司 | Two-stage first-class lithium bromide absorption heat pump unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220802 Effective date of abandoning: 20240625 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20220802 Effective date of abandoning: 20240625 |