CN103411346A - Superhigh temperature absorption type lithium bromide heat pump - Google Patents
Superhigh temperature absorption type lithium bromide heat pump Download PDFInfo
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- CN103411346A CN103411346A CN2013103770102A CN201310377010A CN103411346A CN 103411346 A CN103411346 A CN 103411346A CN 2013103770102 A CN2013103770102 A CN 2013103770102A CN 201310377010 A CN201310377010 A CN 201310377010A CN 103411346 A CN103411346 A CN 103411346A
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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
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
Abstract
The invention discloses a superhigh temperature absorption type lithium bromide heat pump which comprises a condenser, a generator, an evaporator, an absorber, a heat exchanger and a control device. The condenser and the generator are arranged separately and communicated through a turbine booster pump K; the evaporator and the absorber are arranged in the same container and communicated through a pipeline with a herringbone liquid blocking plate; the condenser and the evaporator are communicated through a pipeline L4, and the generator and the absorber are communicated through a pipeline L1 and a pipeline L2; the pipeline L1 and the pipeline L2 are connected with the heat exchanger W and perform heat exchange through the heat exchanger. According to the superhigh temperature absorption type lithium bromide heat pump, the generator and the condenser are arranged separately and connected through the pipeline with the turbine booster pump, so that the pressure in the generator is low, the pressure in the condenser is high, the temperature of application water is increased, and energy resources are utilized to the largest extent.
Description
Technical field
The present invention relates to the absorption lithium bromide heat pump of a kind of superhigh temperature, belong to waste heat recovery reutilization technology field.
Background technology
In numerous power-saving technologies, the lithium bromide absorption type heat pump heat recovery technology is energy-efficient particularly noticeable with the characteristics with distinct economic with it.Lithium bromide absorption type heat pump is usingd lithium-bromide solution as working medium, and environment is not polluted, and does not destroy atmospheric ozone layer, and has energy-efficient characteristics.If these industries have technique or heating heat demand, can be equipped with lithium bromide absorption type heat pump, recycle the used heat that technique produces, reach purpose energy-conservation, that reduce discharging, lower consumption.In addition, absorption heat pump can also absorb the heat of the low-grade heat sources such as underground water, surface water, city domestic sewage, can reach energy-saving and cost-reducing purpose equally.
Lithium bromide water solution is working medium, and wherein water is cold-producing medium, and lithium bromide is absorbent.Lithium bromide belongs to salt, is white crystals, soluble in water and pure, nontoxic, and stable chemical nature, undergo no deterioration.While in lithium bromide water solution, having air to exist, iron and steel is had to stronger corrosivity.Lithium-bromide absorption-type refrigerating machine is cold-producing medium because of water, and evaporating temperature, more than 0 ℃, only can be used for the cold water that the apparatus of air conditioning and preparation production process are used.This refrigeration machine can be with low pressure water vapor or the hot water more than 75 ℃ as thermal source, thereby the utilization of waste gas, used heat, solar energy and low-temperature heat energy is had to important effect.
Generator and the condenser of existing lithium bromide heat pump directly are communicated with by herringbone block page plate, and for the control in generator and the long Distance Transmission process of condenser, the operating temperature how to meet design requirement, need to be improved.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the invention provides the absorption lithium bromide heat pump of a kind of superhigh temperature.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
The absorption lithium bromide heat pump of a kind of superhigh temperature, comprising: condenser, generator, evaporimeter, absorber, heat exchanger and control device is characterized in that: described condenser and generator be independent the setting separately, and is connected by turbocharging pump K; Described evaporimeter and absorber are arranged in same container, and are connected by the pipeline that is provided with the herringbone liquid barrier; Between described condenser and evaporimeter, be connected by pipeline L4, by pipeline L1 and pipeline L2, be connected between generator and absorber; Described pipeline L1 all is connected and carries out heat exchange through over-heat-exchanger with heat exchanger W with pipeline L2;
Described evaporimeter forms the spray equipment of self-loopa by the pipeline L5 with circulating pump G1; Absorber by with circulating pump G2 by the lithium-bromide solution in pipeline L1 by heat exchanger W, through and pipeline L2 in the lithium-bromide solution heat exchange after lead to the spray equipment in generator;
Answer the pipeline L3 of water Qb circulation, answer water Qb in pipeline L3, to pass through successively absorber and condenser, export after heat exchange; Steam pipework is installed in generator, and steam Qc exports after the lithium-bromide solution heat exchange on steam pipework with spray; The waste heat source pipeline is installed in evaporimeter, and waste heat source Qa is output after the water as refrigerant exchange on the waste heat source pipeline with spray.
The absorption lithium bromide heat pump of described superhigh temperature is characterized in that: described turbocharging pump is one-way pump, comes from the high-temperature steam of generator and is sent to condenser for compression.The turbocharging pump is unidirectional herein, therefore high-temperature steam can only be sent to condenser from generator, because high-temperature steam in the outlet temperature of generator end 120 ℃ of left and right, the inlet temperature of condenser need to reach 150 ℃, with the temperature by high-temperature steam, brings up to 150 ℃ to satisfy the demand from 120 ℃ by using this turbocharging pump supercharging mechanical acting.
As preferred version, the absorption lithium bromide heat pump of described superhigh temperature is characterized in that: described generator is the immersion structure, wherein is provided with heat exchanger tube, and the steam in heat exchanger tube heats.
The absorption lithium bromide heat pump of described superhigh temperature is characterized in that: described condenser is the film condensation mode.
The absorption lithium bromide heat pump of described superhigh temperature, it is characterized in that: in described condenser, generator, evaporimeter and absorber, be equipped with pressure sensor and temperature sensor, in described pipeline L1, pipeline L2, pipeline L3, pipeline L4 and pipeline L5, be equipped with flow sensor and motor-driven valve, on motor-driven valve, establish motor-driven valve on off state sensor; On circulating pump G1, G2 and turbocharging pump K, all establish the pump state sensor.
The absorption lithium bromide heat pump of described superhigh temperature, it is characterized in that: described control device comprises control module PLC, LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter, power module, and LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter all are connected with control module PLC; Wherein A/D modular converter connection traffic sensor, pressure sensor, temperature sensor, motor-driven valve on off state sensor and pump state sensor, the D/A modular converter connects the motor-driven valve control module and pump control module is controlled each motor-driven valve, circulating pump and turbocharging pump.
Beneficial effect: the absorption lithium bromide heat pump of superhigh temperature provided by the invention, generator and condenser adopt independently container, by the pipeline with turbocharger, connect between the two, realize low pressure in generator and the condenser inner high voltage, can improve the temperature of answering water like this, reach and utilize to greatest extent the energy.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the block diagram of control device.
In figure: condenser 1, generator 2, evaporimeter 3, absorber 4.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the absorption lithium bromide heat pump of a kind of superhigh temperature comprises: condenser 1, generator 2, evaporimeter 3, absorber 4, heat exchanger W and control device, and described condenser 1 and generator 2 be independent the setting separately, and is connected by turbocharging pump K; Described evaporimeter 3 is arranged in same container with absorber 4, and is connected by the pipeline that is provided with the herringbone liquid barrier; Between described condenser 1 and evaporimeter 3, be connected by pipeline L4, by pipeline L1 and pipeline L2, be connected between generator 2 and absorber 4; Described pipeline L1 all is connected and carries out heat exchange through over-heat-exchanger with heat exchanger W with pipeline L2;
Described evaporimeter 3 forms the spray equipment of self-loopa by the pipeline L5 with circulating pump G1; Absorber 4 by with circulating pump G2 by the lithium-bromide solution in pipeline L1 by heat exchanger W, through and pipeline L2 in the lithium-bromide solution heat exchange after lead to the spray equipment in generator 2;
Answer the pipeline L3 of water Qb circulation, answer water Qb in pipeline L3, to pass through successively absorber 4 and condenser 1, export after heat exchange; In generator 2, steam pipework is installed, steam Qc exports after the lithium-bromide solution heat exchange on steam pipework with spray; The waste heat source pipeline is installed in evaporimeter 3, and waste heat source Qa is output after the water as refrigerant exchange on the waste heat source pipeline with spray.
Described turbocharging pump K is one-way pump, comes from the high-temperature steam of generator 2 and is sent to condenser 1 for compression.The turbocharging pump is unidirectional herein, therefore high-temperature steam can only be sent to condenser from generator, because high-temperature steam in the outlet temperature of generator end 120 ℃ of left and right, the inlet temperature of condenser need to reach 150 ℃, with the temperature by high-temperature steam, brings up to 150 ℃ to satisfy the demand from 120 ℃ by using this turbocharging pump supercharging mechanical acting.
The absorption lithium bromide heat pump of described superhigh temperature is characterized in that: described generator 2 is the immersion structure, wherein is provided with heat exchanger tube, and the steam Qc in heat exchanger tube heats.Generator 2 bromize lithium dilute solutions are outside pipe, and in being managed, the high temperature and high pressure steam heating produces working substance steam, and working substance steam enters condenser 1 by pipeline after the pump pressurization heats up, condense after the cooling water temperature in the device 1 that is condensed, and becomes the aqueous water of high pressure low temperature.The cylindrical shell of generator 2 and condenser 1 and tube sheet are all used the steel plate manufacture, and heat exchanger tube adopts copper pipe, and cast is light pipe.During duty, generator 2 pressure are about 98Kpa, and condenser 1 pressure surpasses 200Kpa, and the interior temperature of condenser 1 remains on 150 ℃.
Described condenser 1 is the film condensation mode.Working substance steam contact heat-exchanging pipe, condensation heat, form liquid film.
In described condenser 1, generator 2, evaporimeter 3, absorber 4, be equipped with pressure sensor and temperature sensor, in described pipeline L1, pipeline L2, pipeline L3, pipeline L4 and pipeline L5, be equipped with flow sensor and motor-driven valve, on motor-driven valve, establish motor-driven valve on off state sensor; On circulating pump G1, G2 and turbocharging pump K, all establish the pump state sensor.
As shown in Figure 2, described control device comprises control module PLC, LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter, power module, and LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter all are connected with control module PLC; Wherein A/D modular converter connection traffic sensor, pressure sensor, temperature sensor, motor-driven valve on off state sensor and pump state sensor, the D/A modular converter connects the motor-driven valve control module and pump control module is controlled each motor-driven valve, circulating pump and turbocharging pump.
The course of work of the present invention is as follows: during original state, the lithium-bromide solution that has low concentration in generator 2, then start generator 2 heating, high-temperature steam Qc is passed in the high-temperature steam pipeline in generator 2, make high-temperature steam and low concentration lithium-bromide solution produce heat exchange, lithium-bromide solution evaporates because of heat absorption, produce cold-producing medium steam, when the temperature sensor that is positioned at generator 2 when controller records temperature and reaches 120 ℃ of designing requirements, pump starts to compress the high-temperature steam transmitted by generator 2, after pressure rise to 150 ℃, it is disposed in condenser 1, and lithium-bromide solution becomes the concentrated solution of HTHP.When generator 2 or condenser 1 end temperature changed in this process, pump can be regulated operating frequency automatically, increased or reduced output, and condenser 1 end temperature is remained on to 150 ℃.
When the force value detected when the pressure sensor in evaporimeter 3 reaches and necessarily requires, by control module, open the motor-driven valve on pipeline L4, and startup circulating pump, waste heat source is passed in the waste heat source pipeline in evaporimeter 3 simultaneously, make water as refrigerant that L4 by the road enters evaporimeter 3 under the self-loopa spray equipment with the waste heat source pipeline in waste heat source carry out heat exchange.
When the force value detected when the pressure sensor in absorber 4 reaches certain numerical value, by control module, open the motor-driven valve on pipeline L3, to answer water access tube road L3, the interior pressure of absorber 4 now is higher, enter the water as refrigerant steam condensation heat release of absorber 4, its liberated heat is employed water and absorbs, and has improved the temperature of answering water; Answer water once to absorb heat in absorber 4, then by pipeline L3, arrive condenser 1, with the high temperature water as refrigerant steam heat exchange in condenser 1, carry out the secondary heat absorption.
When the temperature detected when the temperature sensor in generator 2 reaches certain value, by control module, open the motor-driven valve on pipeline L2, make the high temperature bromize lithium concentrated solution after the low temperature bromize lithium dilute solution heat-shift in heat exchanger W and L1, spray into absorber 4; Simultaneously, regulate the motor-driven valve on pipeline L1, increase the flow of low concentration lithium-bromide solution in L1, to avoid the lithium-bromide solution excessive concentration in generator 2;
After whole heat pump cycle starts fully, by control module, regulate each motor-driven valve, circulating pump and turbocharging pump, make whole circulation can continue to carry out, concentration and the temperature of lithium-bromide solution are no more than certain limit, prevent crystallization, and make the coefficient of performance of whole absorption heat pump reach 1.74.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. absorption lithium bromide heat pump of superhigh temperature, comprising: condenser, generator, evaporimeter, absorber, heat exchanger and control device is characterized in that: described condenser and generator be independent the setting separately, and is connected by turbocharging pump K; Described evaporimeter and absorber are arranged in same container, and are connected by the pipeline that is provided with the herringbone liquid barrier; Between described condenser and evaporimeter, be connected by pipeline L4, by pipeline L1 and pipeline L2, be connected between generator and absorber; Described pipeline L1 all is connected and carries out heat exchange through over-heat-exchanger with heat exchanger W with pipeline L2;
Described evaporimeter forms the spray equipment of self-loopa by the pipeline L5 with circulating pump G1; Absorber by with circulating pump G2 by the lithium-bromide solution in pipeline L1 by heat exchanger W, through and pipeline L2 in the lithium-bromide solution heat exchange after lead to the spray equipment in generator;
Answer the pipeline L3 of water Qb circulation, answer water Qb in pipeline L3, to pass through successively absorber and condenser, export after heat exchange; Steam pipework is installed in generator, and steam Qc exports after the lithium-bromide solution heat exchange on steam pipework with spray; The waste heat source pipeline is installed in evaporimeter, and waste heat source Qa is output after the water as refrigerant exchange on the waste heat source pipeline with spray.
2. the absorption lithium bromide heat pump of superhigh temperature according to claim 1, it is characterized in that: described turbocharging pump is one-way pump, comes from the high-temperature steam of generator and is sent to condenser for compression.
3. the absorption lithium bromide heat pump of superhigh temperature according to claim 1, it is characterized in that: described generator is the immersion structure, wherein is provided with heat exchanger tube, and the steam in heat exchanger tube heats.
4. the absorption lithium bromide heat pump of superhigh temperature according to claim 1, it is characterized in that: described condenser is the film condensation mode.
5. the absorption lithium bromide heat pump of superhigh temperature according to claim 1, it is characterized in that: in described condenser, generator, evaporimeter and absorber, be equipped with pressure sensor and temperature sensor, in described pipeline L1, pipeline L2, pipeline L3, pipeline L4 and pipeline L5, be equipped with flow sensor and motor-driven valve, on motor-driven valve, establish motor-driven valve on off state sensor; On circulating pump G1, G2 and turbocharging pump K, all establish the pump state sensor.
6. according to the absorption lithium bromide heat pump of the described superhigh temperature of claim 1-5 any one, it is characterized in that: described control device comprises control module PLC, LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter, power module, and LCD display module, keyboard, serial ports output module, A/D modular converter, D/A modular converter all are connected with control module PLC; Wherein A/D modular converter connection traffic sensor, pressure sensor, temperature sensor, motor-driven valve on off state sensor and pump state sensor, the D/A modular converter connects the motor-driven valve control module and pump control module is controlled each motor-driven valve, circulating pump and turbocharging pump.
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| CN201310377010.2A CN103411346B (en) | 2013-08-27 | 2013-08-27 | Superhigh temperature absorption type lithium bromide heat pump |
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| CN201310377010.2A CN103411346B (en) | 2013-08-27 | 2013-08-27 | Superhigh temperature absorption type lithium bromide heat pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803668A (en) * | 2014-02-28 | 2014-05-21 | 济钢集团有限公司 | System for recovering residual heat of ammonia vapor on top of surplus ammonia water ammonia still |
| CN111692775A (en) * | 2020-06-22 | 2020-09-22 | 国网综合能源服务集团有限公司 | Lithium bromide absorption heat pump |
-
2013
- 2013-08-27 CN CN201310377010.2A patent/CN103411346B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803668A (en) * | 2014-02-28 | 2014-05-21 | 济钢集团有限公司 | System for recovering residual heat of ammonia vapor on top of surplus ammonia water ammonia still |
| CN111692775A (en) * | 2020-06-22 | 2020-09-22 | 国网综合能源服务集团有限公司 | Lithium bromide absorption heat pump |
| CN111692775B (en) * | 2020-06-22 | 2022-01-11 | 国网综合能源服务集团有限公司 | Lithium bromide absorption heat pump |
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| CN103411346B (en) | 2015-08-19 |
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