CN210663441U - Lithium bromide absorption heat pump unit - Google Patents
Lithium bromide absorption heat pump unit Download PDFInfo
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- CN210663441U CN210663441U CN201920476714.8U CN201920476714U CN210663441U CN 210663441 U CN210663441 U CN 210663441U CN 201920476714 U CN201920476714 U CN 201920476714U CN 210663441 U CN210663441 U CN 210663441U
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- lithium bromide
- water
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- absorber
- condenser
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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
Abstract
The utility model provides a lithium bromide absorption heat pump unit, its overall structure includes: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a circulating pump and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed; wherein: the upper part of the interior of the upper cylinder body is provided with a condenser, the lower part of the interior of the upper cylinder body is provided with a generator, and the interior of the lower cylinder body is provided with an absorber; the lithium bromide water solution is heated by a driving heat source in the generator, after part of the lithium bromide water solution is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and the heating medium water vapor enters a condenser upwards; the water vapor of the heating medium is discharged after being cooled and condensed by cooling water in the condenser; the hot water enters the flash evaporation type evaporator, in the flash evaporation type evaporator, water vapor generated after part of the hot water is flashed enters the absorber, is absorbed by the lithium bromide concentrated solution in the absorber, the concentration of the solution is reduced, and then the solution is upwards sent back to the generator by the circulating pump.
Description
Technical Field
The utility model relates to a waste heat utilization technology field especially relates to a lithium bromide absorption heat pump unit.
Background
The conventional absorption heat pump unit mainly comprises a generator, a condenser, an evaporator, an absorber, a heat exchanger, a circulating pump and the like, wherein in the operation process of the lithium bromide absorption unit, when a lithium bromide dilute solution is heated by a driving heat source in the generator, a heating medium water in the solution is vaporized, and the concentration of the lithium bromide dilute solution in the generator is continuously increased along with the continuous vaporization of the heating medium water and enters the absorber; the water vapor of the heating medium enters a condenser, is cooled by cooling water in the condenser and then is condensed to form high-pressure low-temperature liquid water; when the heat medium water in the condenser enters the evaporator, the heat of a low-level heat source in the evaporator is absorbed and evaporated into low-temperature heat medium water vapor; the water vapor of the low-temperature heating medium enters the absorber, is absorbed by the lithium bromide concentrated solution in the absorber, the concentration of the solution is gradually reduced, and then the solution is sent back to the generator by the circulating pump to complete the whole circulation.
According to the operation principle of a conventional absorption heat pump unit, heat medium water evaporation can be realized only by heating heat medium water through inputting a low-level heat source into an evaporator heat exchanger. When the low-level heat source is water vapor, the water vapor directly enters the absorber instead of the evaporator, and the water vapor as the heat medium of the lithium bromide absorption heat pump unit is absorbed by the lithium bromide concentrated solution, so that the lithium bromide absorption heat pump unit can cancel the system evaporator, improve the heat utilization efficiency and save the space and the investment.
In the production process of industries such as metallurgy, coal chemical industry, salt chemical industry, power generation and the like, a large amount of process circulating cooling water or process wastewater exists and contains a large amount of heat energy. If the waste hot water waste heat can be used as the heat medium water vapor of the lithium bromide unit by heating through a device, the waste hot water waste heat can be fully utilized, and the direction and the application of waste hot water waste heat utilization are enriched.
The boiling point of water can be reduced along with the reduction of the environmental pressure, for example, a negative pressure environment is artificially manufactured, so that the waste hot water is subjected to flash evaporation, clean water vapor is generated and directly conveyed to an absorber, and the water vapor serving as the heat medium water of the lithium bromide absorption heat pump unit is absorbed by a lithium bromide concentrated solution, so that the waste hot water is directly used as the heat medium water of the lithium bromide absorption heat pump unit.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lithium bromide absorption heat pump unit, its overall structure includes: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a circulating pump and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed; wherein: the upper part of the interior of the upper cylinder body is provided with a condenser, the lower part of the interior of the upper cylinder body is provided with a generator, and the interior of the lower cylinder body is provided with an absorber; the lithium bromide water solution is heated by a driving heat source in the generator, after part of the lithium bromide water solution is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and the heating medium water vapor enters a condenser upwards; the heat medium water vapor is cooled and condensed by the cooling water in the condenser, and the heat medium water vapor condenser is characterized in that: the overall structure also includes a flash evaporator.
The flash evaporation type evaporator is an upright tank type container and comprises an upper end enclosure, a lower end enclosure and an upright barrel in the middle, the top of the upper end enclosure is externally connected with a hot water inlet pipe, the bottom of the lower end enclosure is externally connected with a drain pipe and a drain pump, a conical nozzle is arranged on a horizontal water spraying plate which is close to the upper end enclosure and inside the upright barrel, the conical nozzle is large in outlet aperture, hot water enters the tank after passing through the conical nozzle, a part of hot water is flashed into steam and enters an absorber through a steam inlet pipe and is absorbed by lithium bromide aqueous solution in the absorber, non-condensable gas and condensed water generated by separation enter a steam-water separator through the drain pipe, the non-condensable gas generated by separation is discharged through a vacuum pump, and the condensed water enters the drain pipe of the flash evaporation type evaporator and is discharged together with discharged hot water through.
The operation process of the lithium bromide absorption heat pump unit comprises the following steps: the lithium bromide water solution is heated by a driving heat source in the generator, after part of the lithium bromide water solution is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and the heating medium water vapor enters a condenser upwards; the water vapor of the heating medium is discharged after being cooled and condensed by cooling water in the condenser; hot water enters a flash evaporation type evaporator, in the flash evaporation type evaporator, part of water vapor generated after the hot water is flashed enters an absorber, is absorbed by a lithium bromide concentrated solution in the absorber, reduces the concentration of the solution, and is then sent back to the generator upwards by a circulating pump; cooling water from a heat user enters an absorber to absorb heat, then enters a condenser to absorb heat, and finally is sent back to the heat user to release heat; the heat medium from the driving heat source enters the generator, and after heat release, the low-temperature heat medium flows out; one side of the heat exchanger is high-temperature concentrated solution flowing out of the generator, and the other side of the heat exchanger is low-temperature dilute solution flowing out of the absorber, and the high-temperature concentrated solution and the low-temperature dilute solution exchange heat; and the flash evaporator flashes part of the hot water into water vapor which is used as the heat medium water vapor of the flash evaporator lithium bromide absorption heat pump unit.
The heat consumer is the utility model relates to a lithium bromide absorption heat pump unit's heat output receiving arrangement.
Drawings
FIG. 1 is a view showing an internal structure of an embodiment of a lithium bromide absorption heat pump unit according to the present invention;
fig. 2 is an overall view of an embodiment of the lithium bromide absorption heat pump unit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 shows an internal structure diagram of an embodiment of a lithium bromide absorption heat pump unit of the present invention.
The utility model relates to a lithium bromide absorption heat pump unit embodiment inner structure as follows:
a lithium bromide absorption heat pump set is mainly composed of a generator 50, a condenser 40, a flash evaporation evaporator 80, an absorber 70, a heat exchanger 30, a pump and the like.
When the lithium bromide aqueous solution is heated by the driving heat source in the generator 50, the heating medium water in the solution is vaporized; with the continuous vaporization of the heating medium water, the concentration of the lithium bromide dilute solution in the generator continuously rises, and then the lithium bromide dilute solution downwards enters the absorber 70; the heating medium water vapor upwards enters the condenser 40, is cooled by cooling water in the condenser 40 and then is condensed to form high-pressure low-temperature water to be discharged; the hot water enters the flash evaporation evaporator 80, in the flash evaporation evaporator 80, part of the water vapor generated after the hot water is flashed enters the absorber 70, is absorbed by the lithium bromide concentrated solution in the absorber 70, the solution concentration is reduced, and then is sent back to the generator by the circulating pump 73, so that the whole circulation is completed.
The cooling water firstly enters the absorber 70 through the cooling water inlet 71 to absorb heat, then enters the condenser 40 to absorb heat, and finally is sent to the heat consumer 100 from the cooling water outlet 41, and the circulation is continued to continuously produce heat. The heat source 90 is driven to enter the generator 50 from the heat medium inlet 51, and after heat release, the low-temperature heat medium flows out from the outlet 52.
Because the lithium bromide dilute solution is cooled in the absorber 70, the temperature is lower, in order to save the heat for heating the dilute solution and improve the heat efficiency of the whole device, a heat exchanger 30 is added in the system, so that the high-temperature concentrated solution flowing out of the generator 50 and the low-temperature dilute solution flowing out of the absorber 70 exchange heat, and the temperature of the dilute solution entering the generator is improved.
Continuous flash distillation steam is produced in flash evaporator 80, and the steam that this flash distillation produced is exactly the utility model relates to a heat medium water steam of lithium bromide absorption heat pump unit embodiment, it is by flash evaporator 80 maintenance vacuum environment, makes the hot water part that gets into wherein take place the flash distillation and produce, and barrel under this flash distillation steam gets into through steam inlet pipe 61, and the downward entering absorber 70 is absorbed by the lithium bromide aqueous solution in the absorber 70, and the noncondensable gas and the condensate water that the separation produced are discharged through drain pipe 62.
Fig. 2 is a general diagram of an embodiment of the lithium bromide absorption heat pump unit according to the present invention.
The figure shows the overall shape and the attached facilities of the embodiment of the lithium bromide absorption heat pump unit of the utility model.
Wherein, the embodiment is overall including: the device comprises a frame 5, an upper cylinder 10, a lower cylinder 20, a heat exchanger 30 and a flash evaporator 80; the frame 5 combines the upper drum 10, the lower drum 20, the heat exchanger 30, and the flash evaporator 80.
The subsidiary facilities include: driving the heat source 90, and the heat consumer 100.
In the upper cylinder 10, a condenser 40 is horizontally arranged at the upper part, and a generator 50 is horizontally arranged at the lower part; in the lower cylinder 20, an absorber 70 is horizontally provided at the lower portion.
A heat exchanger 30 is arranged at the right side of the frame 5 and in the middle of the right side of the upper cylinder and the lower cylinder.
The flash evaporator 80 is vertically arranged at the left side of the frame 5, and is in the shape of an upright tank-type container which consists of an upper end enclosure, a lower end enclosure and an upright barrel body in the middle. The top of the upper seal head is externally connected with a hot water inlet pipe 81, and the bottom of the lower seal head is externally connected with a drain pipe 82 and a drainage pump 83. A conical nozzle 84 is arranged on a horizontal water spraying plate which is arranged inside the vertical cylinder body and close to the upper end enclosure, the conical nozzle is provided with a larger outlet aperture, and hot water enters the tank after passing through the conical nozzle.
Hot water flowing into the inner cylinder of the flash evaporator from a hot water inlet pipe 81 of the upper end enclosure passes through a conical nozzle 84, a part of the hot water is flashed into steam, enters the absorber 70 through a steam inlet pipe 61 and is absorbed by a lithium bromide aqueous solution in the absorber 70, non-condensable gas and condensed water generated by separation enter the steam-water separator 53 through a drain pipe 62, the non-condensable gas generated by separation is discharged through a vacuum pump 54, and the condensed water enters a drain pipe 82 in the waste water flash evaporator 80 and is discharged together with the discharged hot water through a drain pump 83.
The cooling water generated by the hot user 100 firstly enters the absorber in the lower cylinder 20 through the cooling water inlet 71 to absorb heat, then enters the condenser 40 of the upper cylinder 10 to absorb heat upwards, and finally is sent back to the hot user from the cooling water outlet 41. The circulation is kept, and heat is continuously produced.
The heat medium flowing out from the driving heat source enters the generator 50 in the upper cylinder 10 through the inlet 51, and after heat release, the low-temperature heat medium returns from the outlet 52.
Claims (2)
1. A lithium bromide absorption heat pump unit, the general structure of which comprises: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a circulating pump and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed; wherein: the upper part of the interior of the upper cylinder body is provided with a condenser, the lower part of the interior of the upper cylinder body is provided with a generator, and the interior of the lower cylinder body is provided with an absorber; the lithium bromide water solution is heated by a driving heat source in the generator, after part of the lithium bromide water solution is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and the heating medium water vapor enters a condenser upwards; the heat medium water vapor is cooled and condensed by the cooling water in the condenser, and the heat medium water vapor condenser is characterized in that: the overall structure also includes a flash evaporator.
2. The lithium bromide absorption heat pump unit according to claim 1, wherein: the flash evaporation type evaporator is an upright tank type container in appearance and comprises an upper end enclosure, a lower end enclosure and an upright barrel in the middle, the top of the upper end enclosure is externally connected with a hot water inlet pipe, the bottom of the lower end enclosure is externally connected with a drain pipe and a drain pump, a conical nozzle is arranged on a horizontal water spraying plate close to the upper end enclosure in the upright barrel, hot water enters the tank after passing through the conical nozzle, and a part of hot water is flashed into steam and enters an absorber through a steam inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476714.8U CN210663441U (en) | 2019-04-01 | 2019-04-01 | Lithium bromide absorption heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476714.8U CN210663441U (en) | 2019-04-01 | 2019-04-01 | Lithium bromide absorption heat pump unit |
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| CN210663441U true CN210663441U (en) | 2020-06-02 |
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| CN201920476714.8U Active CN210663441U (en) | 2019-04-01 | 2019-04-01 | Lithium bromide absorption heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306837A (en) * | 2019-04-01 | 2020-06-19 | 哈尔滨工大金涛科技股份有限公司 | Lithium bromide absorption heat pump unit |
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2019
- 2019-04-01 CN CN201920476714.8U patent/CN210663441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306837A (en) * | 2019-04-01 | 2020-06-19 | 哈尔滨工大金涛科技股份有限公司 | Lithium bromide absorption heat pump unit |
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