CN106287622B - Vertical tube rising film condensing source heat pump driven steam boiler - Google Patents
Vertical tube rising film condensing source heat pump driven steam boiler Download PDFInfo
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- CN106287622B CN106287622B CN201610791413.5A CN201610791413A CN106287622B CN 106287622 B CN106287622 B CN 106287622B CN 201610791413 A CN201610791413 A CN 201610791413A CN 106287622 B CN106287622 B CN 106287622B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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Abstract
Vertical tube rising film condensing source heat pump driving steam boiler: is a cross-boundary product of the condensing source heat pump industry and the waste heat steam boiler industry; the siphon circulation is utilized to drive the heat pump working medium, heat release of a condensing source is extracted in a countercurrent mode to realize climbing film evaporation, and the evaporation pressure of the heat pump is greatly improved; the siphon circulation is utilized to drive softening and water supplementing, the heat pump working medium is extracted in a countercurrent mode to condense and release heat so as to realize climbing film evaporation, and the evaporation pressure of the heat pump boiler is greatly improved; the heat release is condensed by a countercurrent sectional mode, so that the condensing pressure of the heat pump is greatly reduced; the pressure difference, the discharge capacity, the investment and the electricity consumption of the compressor are greatly reduced, so that the vertical pipe rising film condensing source heat pump is used for driving the steam boiler.
Description
Field of the art
The invention relates to a vertical tube rising film condensing source heat pump for recovering condensing latent heat such as condensing steam, waste steam, spent steam and the like and directly generating the water steam by a heat pump condenser to drive a steam boiler.
(II) background art
(1) Current water source heat pumps can only extract heat from the source side water source and release heat to the use side circulating water.
(2) In many industrial processes, a great amount of waste steam, spent steam, secondary steam, condensed steam and the like are often associated, and how to directly recycle the latent heat of condensation by utilizing the evaporator of the heat pump is an important subject.
(3) Meanwhile, how to effectively utilize the condenser of the heat pump to directly generate water vapor without the assistance of a circulating water pump and a steam drum becomes another important subject.
(4) Therefore, the heat pump can directly extract heat from condensed water at the heat source side and directly generate water vapor at the use side, thereby becoming an innovative product which is urgently expected in the market.
In view of the above, the market is expecting a cross-boundary product in the condensing source heat pump industry and the waste heat steam boiler industry.
(III) summary of the invention
The invention aims at: the siphon circulation countercurrent heat-taking climbing film evaporator in the system integrated pipe, the siphon circulation countercurrent heat-taking climbing film steam boiler condenser in the pipe and the compressor are cross-boundary products of the condensing source heat pump industry and the waste heat steam boiler industry; the siphon circulation is utilized to drive the heat pump working medium, heat release of a condensing source is extracted in a countercurrent mode to realize climbing film evaporation, and the evaporation pressure of the heat pump is greatly improved; the siphon circulation is utilized to drive softening and water supplementing, the heat pump working medium is extracted in a countercurrent mode to condense and release heat so as to realize climbing film evaporation, and the evaporation pressure of the heat pump boiler is greatly improved; the heat release is condensed by a countercurrent sectional mode, so that the condensing pressure of the heat pump is greatly reduced; the pressure difference, the discharge capacity, the investment and the electricity consumption of the compressor are greatly reduced, so that the vertical pipe rising film condensing source heat pump is used for driving the steam boiler.
A vertical tube rising film condensing source heat pump shown in the attached figure 1 drives a steam boiler, and a 1-tube siphon circulation countercurrent heating rising film evaporator is adopted; 1-1-condensing inlet; 1-2-a first separation chamber; 1-3-circular ring distributed vertical siphon heat taking tube clusters; 1-4-a first shunt chamber; 1-5-condensate outlet; 1-6-a liquid heat pump working medium inlet; 1-7-gaseous heat pump working medium outlet; 1-8 of an oil suction port; 1-9-ejector; 1-10-two-way valve; 1-11-noncondensable gas discharge outlet; 2-condensing; 3-a liquid level switch; 4-expansion valve; 4-1-drying the filter; 5-compressor; 5-1 of an oil return port; 5-2-driving means; 5-3-regenerator; 6-siphon circulation countercurrent heating rising film steam boiler condenser in the pipe; 6-1-softening and supplementing water inlet; 6-2-second separation chamber; 6-3-circular ring distributed vertical siphon heat release tube clusters; 6-4-second shunt cavity; 6-5-a water vapor outlet; 6-6-gaseous heat pump working medium inlet; 6-7-a liquid heat pump working medium outlet; 6-8-air outlet; 7-a heat pump working medium; 8-softening and moisturizing; 9-softening water supplementing flow regulating valve; 10-a water vapor compressor; 11-high pressure water vapor; 12-pressure switch; 13-a temperature switch; 14-vacuum pump constitutes, its characterized in that:
the gaseous heat pump working medium outlet 1-7 at the top of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1 is connected with the compressor 5, the shell side of the tube-in siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6, the drying filter 4-1, the expansion valve 4 and the liquid heat pump working medium inlet 1-6 at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1 through pipelines to form a heat pump circulation loop;
the siphon circulation countercurrent heat-extraction rising film evaporator 1 in the pipe comprises a top condensing inlet 1-1 of the shell side, a middle circular ring distributed vertical siphon heat-extraction tube bundle 1-3 outside and a bottom condensate outlet 1-5, so as to form a condensing countercurrent heat-release loop;
the method comprises the steps that an in-pipe siphon circulation countercurrent heat-taking climbing film evaporator 1 is composed of a bottom liquid heat pump working medium inlet 1-6, a bottom first diversion cavity 1-4, a middle circular ring distribution vertical siphon heat-taking tube cluster 1-3, a top first separation cavity 1-2 and a top gaseous heat pump working medium outlet 1-7, wherein the circular ring distribution vertical siphon heat-taking tube cluster 1-3 is a circular ring distribution vertical tube cluster, a cylindrical space siphon descending channel is arranged in the center of the circular ring distribution vertical siphon heat-taking tube cluster, a plurality of cylindrical spaces on the inner wall of the tube cluster are arranged as siphon ascending channels, and the flow areas of the siphon descending channels and the siphon ascending channels are approximately equal;
the shell of the tube siphon circulation countercurrent heat-taking climbing film evaporator 1 is a cylindrical surface which is vertically arranged;
a liquid level switch 3 is arranged on the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1, the opening of an expansion valve 4 is controlled in a closed loop mode according to a heat pump working medium liquid level signal, and an outlet of the expansion valve 4 forms a heat pump working medium expansion loop through a liquid heat pump working medium inlet 1-6 at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1;
the siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 in the tube forms a countercurrent heat-releasing loop of heat pump working medium by a top gaseous heat pump working medium inlet 6-6 of a shell side, a middle circular ring distributed vertical siphon heat-releasing tube cluster 6-3 outside and a bottom liquid heat pump working medium outlet 6-7;
the inner siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 comprises a bottom softening water supplementing inlet 6-1, a bottom second flow dividing cavity 6-4, the inner side of a middle circular ring distribution vertical siphon heat releasing pipe cluster 6-3, a top second separating cavity 6-2 and a top steam outlet 6-5, wherein the circular ring distribution vertical siphon heat releasing pipe cluster 6-3 is a circular ring distribution vertically arranged pipe cluster, a cylindrical space siphon descending channel is arranged in the center, a plurality of cylindrical spaces on the inner wall of the pipe cluster are arranged as siphon ascending channels, and the flow areas of the siphon descending channel and the siphon ascending channels are approximately equal;
the shell of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 is a cylindrical surface which is vertically arranged;
the inner wall of the upper part of the tube side of the tube inner siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 is provided with a liquid level switch 3, the opening of a softening and water supplementing flow regulating valve 9 is controlled in a closed loop mode according to a softening and water supplementing water level signal, and the outlet of the softening and water supplementing flow regulating valve 9 is connected with a softening and water supplementing inlet 6-1 at the bottom of the tube side of the tube inner siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 through a pipeline to form a softening and water supplementing flow regulating loop;
the siphon circulation countercurrent heating rising film steam boiler condenser 6 in the pipe is connected with a steam compressor 10 through a pipeline at the top steam outlet 6-5 to form a steam compression loop;
the inner wall of the second separation cavity 6-2 at the top of the tube pass of the tube side of the tube internal siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 is provided with one pressure switch 12 and one temperature switch 13 respectively;
the siphon circulation countercurrent heating rising film evaporator 1 has a non-condensable gas outlet 1-11 in the middle of the shell side to form a non-condensable gas outlet loop;
the siphon circulation countercurrent heat-taking rising film evaporator 1 in the pipe is characterized in that an oil suction port 1-8 at the upper part of a tube side of the evaporator 1 in the pipe is connected with a low-pressure injection port of an ejector 1-9 through a pipeline and a two-way valve 1-10, an air outlet 6-8 at the upper part of a shell side of the condenser 6 of the siphon circulation countercurrent heat-taking rising film steam boiler in the pipe is connected with a high-pressure air inlet of the ejector 1-9 through the pipeline and the two-way valve 1-10, and an oil return port 5-1 of an air suction pipe of the compressor 5 is connected with a medium-pressure steam outlet of the ejector 1-9 through the pipeline and the two-way valve 1-10 to form an oil return loop of the siphon circulation countercurrent heat-taking rising film evaporator 1 in the pipe;
the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking and film-rising steam boiler condenser 6 is provided with a liquid level switch 3, the opening of a softening and water-supplementing flow regulating valve 9 is controlled in a closed loop mode according to a softening and water-supplementing water level signal, the inlet of the softening and water-supplementing flow regulating valve 9 is connected with the outlet of a regenerator 5-3 of an engine 5-2 through a pipeline, and the outlet of the softening and water-supplementing flow regulating valve is connected with a softening and water-supplementing heat-regenerating and flow regulating loop through the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking and film-rising steam boiler condenser 6.
The steam compressor 10 is a hot compression type steam ejector, high-pressure steam 11 flows through a steam inlet of the steam ejector and is ejected out of a nozzle at a high speed, the formed negative pressure is used for ejecting the steam generated at the top of the tube side of the tube 6 of the siphon circulation countercurrent heat-taking climbing film steam boiler condenser through the ejection opening, and the steam is mixed and diffused into medium-pressure and high-temperature steam which flows out through a steam outlet of the steam ejector.
The condensed steam 2 is a liquid waste heat medium or a gaseous waste heat medium.
The driving device 5-2 is an electric motor, or a gas-driven internal combustion engine, or a gasoline-driven internal combustion engine, or a diesel-driven internal combustion engine, or a kerosene-driven internal combustion engine, or a stirling external combustion engine, or a gas-driven gas turbine engine.
The working principle of the invention is described below with reference to fig. 1:
1. condensing and releasing heat: the condensed water 2 is introduced into the shell side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1 through the top condensed water inlet 1-1, the heat release is condensed and provided outside the vertical siphon heat-taking tube cluster 1-3 in the middle circular ring distribution so as to provide a heat pump heat source, and condensed fresh water is discharged from the condensed water outlet 1-5.
2. Heat pump working medium countercurrent heat-taking climbing film evaporation: the liquid level switch 3 is arranged on the inner wall of the upper part of the tube side siphon circulation countercurrent heat-taking climbing film evaporator 1, the opening of the expansion valve 4 is controlled in a closed loop mode according to a liquid level signal of the heat pump working medium, so that the low-pressure two-phase heat pump working medium 7 flows through the inner side of the tube side bottom liquid heat pump working medium inlet 1-6, the bottom first diversion cavity 1-4, the inner side of the middle circular ring distribution vertical siphon heat-taking tube cluster 1-3, the top first separation cavity 1-2 and the top gaseous heat pump working medium outlet 1-7 from bottom to top, wherein the heat pump working medium 7 directly flows to the inner side of the first diversion cavity 1-4 and the inner side of the circular ring distribution vertical siphon heat-taking tube cluster 1-3 under the action of pipeline external pressure at the liquid heat pump working medium inlet 1-6, then extracts heat released by a condensing source in a countercurrent mode to evaporate and reduce specific gravity, and in a central cylindrical siphon descending channel, the heat pump working medium 7 is lowered under the action of gravity, so that the heat pump working medium is driven to strengthen heat transfer siphon circulation.
3. Heat pump cycle: the low-pressure overheated gaseous heat pump working medium 7 at the top of the tube side of the tube internal siphon circulation countercurrent heat-taking climbing film evaporator 1 is compressed by a compressor 5 driven by a gas internal combustion engine 5-2 to become a high-pressure overheated gaseous heat pump working medium 7, the high-pressure overheated gaseous heat pump working medium 7 is sent into the shell side of the tube internal siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 to be condensed into a high-pressure supercooled liquid heat pump working medium 7, flows through a drying filter 4-1, is throttled by an expansion valve 4 to become a low-pressure two-phase heat pump working medium 7, and flows into the tube side of the tube internal siphon circulation countercurrent heat-taking climbing film evaporator 1 again to complete heat pump circulation, and simultaneously, condensation heat is released to the softening water supplementing 8 of the tube side of the tube internal siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6.
4. Condensing and releasing heat of the heat pump working medium: the high-pressure overheat gaseous heat pump working medium 7 flows from top to bottom through the gaseous heat pump working medium inlet 6-6 at the top of the shell side of the tube inner siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6, the middle circular ring distribution vertical siphon heat release tube bundle 6-3 and the bottom liquid heat pump working medium outlet 6-7, and then overheat sensible heat, condensation latent heat and supercooling sensible heat are released in a countercurrent mode in a sectional manner, so that the high-pressure supercooling liquid heat pump working medium 7 is formed by condensation.
5. Softening water, backheating and preheating, and countercurrent heating and climbing film evaporation: the liquid level switch 3 is arranged on the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking rising film steam boiler condenser 6, the opening of the softening water supplementing flow regulating valve 9 is controlled in a closed loop mode according to the water level signal of the softening water supplementing 8, so that after the softening water supplementing 8 is cooled by a sleeve cylinder of the engine 5-2 and the flue gas regenerator 5-3 is preheated, the softening water supplementing inlet 6-1, the bottom second shunt cavity 6-4 and the inner side of the middle circular ring distributed vertical siphon heat releasing tube bundle 6-3 at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 flow downwards, and then the condensation heat release of the heat pump working medium 7 is extracted in a countercurrent mode to evaporate a rising film and reduce specific gravity; and the generated water vapor flows out from the top water vapor outlet 6-5 after being separated by the top second separation chamber 6-2.
6. Steam output: 1 part of high-pressure steam 11 flows through a steam inlet of the thermal compression type steam ejector 10 through a pipeline and is ejected at a high speed by a nozzle of the thermal compression type steam ejector, the formed negative pressure is used for taking n parts of steam at a tube side top steam outlet 6-5 of the thermal rising film steam boiler condenser 6 through siphon circulation countercurrent in the ejection port and the pipeline ejection pipe, the n parts of steam are mixed and diffused into n+1 parts of medium-pressure and high-pressure steam, the n parts of medium-pressure and high-pressure steam are output through a steam outlet of the n parts of steam, and the water steam flow of the thermal compression type steam ejector 10 is jointly controlled by a pressure switch 12 and a temperature switch 13 which are arranged on the inner wall of a top second separation cavity 6-2.
7. Oil return of the compressor: the high-pressure gaseous heat pump working medium 7 of the upper air outlet 6-8 of the shell side of the condenser 6 of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler flows through the high-pressure air inlet of the ejector 1-9 by the pipeline and the two-way valve 1-10 and is ejected at high speed by the nozzle of the high-pressure gaseous heat pump working medium, the formed negative pressure ejects lubricating oil by the low-pressure ejecting port, the pipeline and the two-way valve 1-10 of the high-pressure gaseous heat pump working medium, and the lubricating oil is mixed and diffused into medium-pressure fluid, and then is sent back to the air suction pipe oil return port 5-1 of the compressor 5 by the extruding port, the pipeline and the two-way valve 1-10 of the medium-pressure fluid.
8. Discharging non-condensable gas: and starting a vacuum pump 14 to extract the non-condensable gas in the shell side condensation 2 of the tube-internal siphon circulation countercurrent heat-extracting climbing film evaporator 1 from the non-condensable gas outlet 1-11, and discharging the non-condensable gas to the environment.
Therefore, compared with the existing water source heat pump and waste heat boiler, the invention has the following characteristics:
(1) The siphon circulation countercurrent heat-taking climbing film evaporator in the system integrated pipe, the siphon circulation countercurrent heat-taking climbing film steam boiler condenser in the pipe and the compressor are cross-boundary products of the water source heat pump industry and the waste heat boiler industry;
(2) The siphon circulation is utilized to drive the heat pump working medium, heat release of a condensing source is extracted in a countercurrent mode to realize climbing film evaporation, and the evaporation pressure of the heat pump is greatly improved;
(3) The siphon circulation is utilized to drive softening and water supplementing, the heat pump working medium is extracted in a countercurrent mode to condense and release heat so as to realize climbing film evaporation, and the evaporation pressure of the heat pump boiler is greatly improved;
(4) The heat release is condensed by a countercurrent sectional mode, so that the condensing pressure of the heat pump is greatly reduced;
(5) The pressure difference, the discharge capacity, the investment and the electricity consumption of the compressor are greatly reduced, so that the vertical pipe rising film condensing source heat pump is used for driving the steam boiler.
Therefore, compared with the existing water source heat pump and waste heat boiler, the invention has the following technical advantages: the siphon circulation countercurrent heat-taking climbing film evaporator in the system integrated pipe, the siphon circulation countercurrent heat-taking climbing film steam boiler condenser in the pipe and the compressor are cross-boundary products of the condensing source heat pump industry and the waste heat steam boiler industry; the siphon circulation is utilized to drive the heat pump working medium, heat release of a condensing source is extracted in a countercurrent mode to realize climbing film evaporation, and the evaporation pressure of the heat pump is greatly improved; the siphon circulation is utilized to drive softening and water supplementing, the heat pump working medium is extracted in a countercurrent mode to condense and release heat so as to realize climbing film evaporation, and the evaporation pressure of the heat pump boiler is greatly improved; the heat release is condensed by a countercurrent sectional mode, so that the condensing pressure of the heat pump is greatly reduced; the pressure difference, the discharge capacity, the investment and the electricity consumption of the compressor are greatly reduced, so that the vertical pipe rising film condensing source heat pump is used for driving the steam boiler.
(IV) description of the drawings
FIG. 1 is a flow chart of a system for mechanically compressing output steam in accordance with the present invention.
FIG. 2 is a flow chart of a system for thermally compressing output steam in accordance with the present invention.
As shown in fig. 1, wherein: 1-a siphon circulation countercurrent heating climbing film evaporator in a pipe; 1-1-condensing inlet; 1-2-a first separation chamber; 1-3-circular ring distributed vertical siphon heat taking tube clusters; 1-4-a first shunt chamber; 1-5-condensate outlet; 1-6-a liquid heat pump working medium inlet; 1-7-gaseous heat pump working medium outlet; 1-8 of an oil suction port; 1-9-ejector; 1-10-two-way valve; 1-11-noncondensable gas discharge outlet; 2-condensing; 3-a liquid level switch; 4-expansion valve; 4-1-drying the filter; 5-compressor; 5-1 of an oil return port; 5-2-driving means; 5-3-regenerator; 6-siphon circulation countercurrent heating rising film steam boiler condenser in the pipe; 6-1-softening and supplementing water inlet; 6-2-second separation chamber; 6-3-circular ring distributed vertical siphon heat release tube clusters; 6-4-second shunt cavity; 6-5-a water vapor outlet; 6-6-gaseous heat pump working medium inlet; 6-7-a liquid heat pump working medium outlet; 6-8-air outlet; 7-a heat pump working medium; 8-softening and moisturizing; 9-softening water supplementing flow regulating valve; 10-a water vapor compressor; 11-high pressure water vapor; 12-pressure switch; 13-a temperature switch; 14-vacuum pump.
(fifth) detailed description of the invention
The embodiment of the vertical tube rising film condensing source heat pump driven steam boiler provided by the invention is shown in the attached figure 1, and is now described as follows: the device comprises a siphon circulation countercurrent heat-taking climbing film evaporator 1 which is arranged vertically and has 4050kW of evaporation heat-taking quantity and is made of carbon steel; 1-1 of a stainless steel pipe condensing inlet with the diameter of 200 mm/the wall thickness of 2.5 mm; a cylindrical first separation chamber 1-2 with a diameter of 1200 mm/height of 250 mm; a circular ring with the outer wrapping diameter of 1200 mm/height of 2000 mm/pipe diameter of 19mm is distributed with vertical siphon heat taking pipe clusters of 1-3; a cylindrical first diversion cavity 1-4 with the diameter of 1200 mm/250 mm in height; 1-5 stainless steel pipe condensate outlet with diameter of 40 mm/wall thickness of 1.5 mm/length of 60 mm; 1-6 parts of copper tube liquid heat pump working medium inlets with the diameter of 60 mm/wall thickness of 1.5 mm/length of 60 mm; 1-7 parts of copper tube gaseous heat pump working medium outlet with the diameter of 120 mm/wall thickness of 1.5 mm/length of 60 mm; 1-8 parts of copper tube oil suction ports with the diameter of 12 mm/wall thickness of 0.9 mm/length of 20 mm; 1-9 copper pipe ejectors with the interface diameter of 12 mm/wall thickness of 0.9 mm/length of 150 mm; 1-10 of copper tube two-way valve with interface diameter of 12 mm/wall thickness of 0.9 mm/length of 150 mm; 1-11 of copper tube noncondensable gas outlet with interface diameter of 9 mm/wall thickness of 0.9 mm/length of 150 mm; saturated condensing 2 at the temperature of 50 ℃ and the flow rate of 5.79 t/h; a stainless steel liquid level switch 3 with the height of 250 mm; a red copper expansion valve 4 with an interface diameter of 60 mm/wall thickness of 1 mm; a red copper dry filter 4-1 with an interface diameter of 60 mm/wall thickness of 1 mm; a compressor 5 with suction capacity of 4000m 3/h; copper pipe oil return port 5-1 with diameter of 12 mm/wall thickness of 0.9 mm/length of 20 mm; a gas internal combustion engine 5-2 with an output shaft power of 967 kW; a regenerator 5-3 with sleeve cylinder cooling and flue gas heat recovery quantity 967 kW; in-pipe siphon circulation countercurrent heating rising film steam boiler condenser 6 with condensation heat release capacity 5017 kW; a stainless steel pipe softening water supplementing inlet 6-1 with the diameter of 60 mm/wall thickness of 2.5 mm/length of 60 mm; a cylindrical second separation chamber 6-2 having a diameter of 1200 mm/height of 250 mm; a circular ring with the diameter of 1200 mm/height of 2000 mm/pipe diameter of 19mm is distributed with a vertical siphon heat release pipe cluster of 6-3; a cylindrical second shunt cavity 6-4 with a diameter of 1200 mm/height of 250 mm; 6-5 parts of stainless steel pipe water vapor outlet with the diameter of 200 mm/wall thickness of 2.5 mm/length of 200 mm; 6-6 parts of copper pipe gaseous heat pump working medium inlet with diameter of 120 mm/wall thickness of 1.5 mm/length of 200 mm; 6-7 parts of copper tube liquid heat pump working medium outlet with diameter of 60 mm/wall thickness of 1.5 mm/length of 60 mm; 6-8 of copper pipe air outlet with diameter of 12 mm/wall thickness of 0.9 mm/length of 50 mm; r124 is a heat pump working medium 7; softening and supplementing water 8 with inlet temperature of 20 ℃ and flow rate of 7 t/h; a softening water supplementing flow regulating valve 9 made of stainless steel with the interface diameter of 60 mm/wall thickness of 2.5 mm/length of 50 mm; a thermal compression steam injector 10 for compressing steam with an absolute pressure of 0.9bar and a flow rate of 7t/h to 1bar absolute pressure; high-pressure steam 11 with absolute pressure of 9bar and flow rate of 3 t/h; a pressure switch 12 of 0.5bar to 2.0 bar; a temperature switch 13 at 0-120 ℃; a vacuum pump 14 with a pumping flow rate of 3m 3/min.
The gaseous heat pump working medium outlet 1-7 at the top of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1 is connected with the compressor 5, the shell side of the tube-in siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6, the drying filter 4-1, the expansion valve 4 and the liquid heat pump working medium inlet 1-6 at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1 through pipelines to form a heat pump circulation loop;
the siphon circulation countercurrent heat-extraction rising film evaporator 1 in the pipe comprises a top condensing inlet 1-1 of the shell side, a middle circular ring distributed vertical siphon heat-extraction tube bundle 1-3 outside and a bottom condensate outlet 1-5, so as to form a condensing countercurrent heat-release loop;
the method comprises the steps that an in-pipe siphon circulation countercurrent heat-taking climbing film evaporator 1 is composed of a bottom liquid heat pump working medium inlet 1-6, a bottom first diversion cavity 1-4, a middle circular ring distribution vertical siphon heat-taking tube cluster 1-3, a top first separation cavity 1-2 and a top gaseous heat pump working medium outlet 1-7, wherein the circular ring distribution vertical siphon heat-taking tube cluster 1-3 is a circular ring distribution vertical tube cluster, a cylindrical space siphon descending channel is arranged in the center of the circular ring distribution vertical siphon heat-taking tube cluster, a plurality of cylindrical spaces on the inner wall of the tube cluster are arranged as siphon ascending channels, and the flow areas of the siphon descending channels and the siphon ascending channels are approximately equal;
the shell of the tube siphon circulation countercurrent heat-taking climbing film evaporator 1 is a cylindrical surface which is vertically arranged;
a liquid level switch 3 is arranged on the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1, the opening of an expansion valve 4 is controlled in a closed loop mode according to a heat pump working medium liquid level signal, and an outlet of the expansion valve 4 forms a heat pump working medium expansion loop through a liquid heat pump working medium inlet 1-6 at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator 1;
the siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 in the tube forms a countercurrent heat-releasing loop of heat pump working medium by a top gaseous heat pump working medium inlet 6-6 of a shell side, a middle circular ring distributed vertical siphon heat-releasing tube cluster 6-3 outside and a bottom liquid heat pump working medium outlet 6-7;
the inner siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 comprises a bottom softening water supplementing inlet 6-1, a bottom second flow dividing cavity 6-4, the inner side of a middle circular ring distribution vertical siphon heat releasing pipe cluster 6-3, a top second separating cavity 6-2 and a top steam outlet 6-5, wherein the circular ring distribution vertical siphon heat releasing pipe cluster 6-3 is a circular ring distribution vertically arranged pipe cluster, a cylindrical space siphon descending channel is arranged in the center, a plurality of cylindrical spaces on the inner wall of the pipe cluster are arranged as siphon ascending channels, and the flow areas of the siphon descending channel and the siphon ascending channels are approximately equal;
the shell of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 is a cylindrical surface which is vertically arranged;
the siphon circulation countercurrent heating rising film steam boiler condenser 6 in the pipe is connected with a steam compressor 10 through a pipeline at the top steam outlet 6-5 to form a steam compression loop;
the inner wall of the second separation cavity 6-2 at the top of the tube pass of the tube side of the tube internal siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 is provided with one pressure switch 12 and one temperature switch 13 respectively;
the siphon circulation countercurrent heating rising film evaporator 1 is formed by a non-condensable gas discharge port 1-11 in the middle of the shell side of the vacuum pump 14.
The steam compressor 10 is a thermal compression type steam ejector 10, high-pressure steam 11 flows through a steam inlet of the steam ejector 10 and is ejected out of a nozzle at a high speed, the formed negative pressure is used for ejecting the steam generated at the top of the tube side of the tube 6 of the siphon circulation countercurrent heat-taking climbing film steam boiler condenser through the ejection opening, and the steam is mixed and diffused into medium-pressure and high-pressure steam which flows out through a steam outlet of the steam ejector.
The siphon circulation countercurrent heat-taking rising film evaporator 1 in the pipe is characterized in that an oil suction port 1-8 at the upper part of a tube side of the evaporator 1 in the pipe is connected with a low-pressure injection port of an ejector 1-9 through a pipeline and a two-way valve 1-10, an air outlet 6-8 at the upper part of a shell side of the condenser 6 of the siphon circulation countercurrent heat-taking rising film steam boiler in the pipe is connected with a high-pressure air inlet of the ejector 1-9 through the pipeline and the two-way valve 1-10, and an oil return port 5-1 of an air suction pipe of the compressor 5 is connected with a medium-pressure steam outlet of the ejector 1-9 through the pipeline and the two-way valve 1-10 to form an oil return loop of the siphon circulation countercurrent heat-taking rising film evaporator 1 in the pipe.
The inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking and film-rising steam boiler condenser 6 is provided with a liquid level switch 3, the opening of a softening and water-supplementing flow regulating valve 9 is controlled in a closed loop mode according to a softening and water-supplementing water level signal, the inlet of the softening and water-supplementing flow regulating valve 9 is connected with the outlet of a regenerator 5-3 of an engine 5-2 through a pipeline, and the outlet of the softening and water-supplementing flow regulating valve is connected with a softening and water-supplementing heat-regenerating and flow regulating loop through the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking and film-rising steam boiler condenser 6.
In the embodiment of the invention, the following steps are included: the flow is 5.79t/h, saturated condensing 2 at the temperature of 50 ℃ flows through a condensing inlet 1-1 from top to bottom, the outer side of a circular ring distributed vertical siphon heat-taking tube bank 1-3 and a condensed water outlet 1-5, and heat is released by condensation to provide a heat pump heat source.
The liquid level switch 3 controls the low-pressure two-phase R124 heat pump working medium 7 to flow through the liquid heat pump working medium inlet 1-6, the first diversion cavity 1-4, the inner side of the circular ring distributed vertical siphon heat taking tube bank 1-3, the first separation cavity 1-2 and the gaseous heat pump working medium outlet 1-7 from bottom to top through the expansion valve 4, wherein the heat pump working medium 7 directly flows to the inner side of the first diversion cavity 1-4 and the circular ring distributed vertical siphon heat taking tube bank 1-3 under the external pressure action of a pipeline at the liquid heat pump working medium inlet 1-6, then extracts 4050kW of condensing heat in a countercurrent mode to release heat and increase the film for evaporation and reduce the specific gravity, and in a central cylindrical siphon descending channel, the heat pump working medium 7 is submerged under the action of gravity due to lower temperature and larger specific gravity, so as to form siphon circulation for driving and enhancing heat transfer.
The low-pressure overheat gaseous heat pump working medium 7 is compressed into a high-pressure overheat gaseous heat pump working medium 7 by a compressor 5 driven by a gas internal combustion engine 5-2 with output power of 967kW, then is sent into an in-pipe siphon circulation countercurrent heat-taking and film-lifting steam boiler condenser 6, is condensed into a high-pressure supercooled liquid heat pump working medium 7 by a shell side, flows through a drying filter 4-1, is throttled by an expansion valve 4 to become a low-pressure two-phase heat pump working medium 7, and flows into the pipe side of the in-pipe siphon circulation countercurrent heat-taking and film-lifting evaporator 1 again to complete heat pump circulation, and simultaneously releases 5017kW of condensation heat to a softening water supplementing 8 with the inlet temperature of 20 ℃ and the flow of 7t/h of the pipe side of the in-pipe siphon circulation countercurrent heat-taking and film-lifting steam boiler condenser 6.
The high-pressure overheat gaseous heat pump working medium 7 flows from top to bottom through the gaseous heat pump working medium inlet 6-6 at the top of the shell side of the tube inner siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6, the middle circular ring distribution vertical siphon heat release tube bundle 6-3 and the bottom liquid heat pump working medium outlet 6-7, and then overheat sensible heat, condensation latent heat and supercooling sensible heat are released in a countercurrent mode in a sectional manner, so that the high-pressure supercooling liquid heat pump working medium 7 is formed by condensation.
The liquid level switch 3 controls the inlet temperature to 20 ℃ through a softening water supplementing flow regulating valve 9, the softening water supplementing 8 with the flow of 7t/h is cooled by a sleeve cylinder of the engine 5-2 and preheated to 35 ℃ by a regenerator 5-3 with the smoke heat regeneration quantity of 967kW, and the softening water supplementing inlet 6-1, the bottom second diversion cavity 6-4 and the inner side of a vertical siphon heat release pipe cluster 6-3 at the bottom of the tube side of the tube inner siphon circulation countercurrent heat-taking rising film steam boiler condenser 6 are distributed from bottom to top, and then the 5017kW condensation heat release of the heat pump working medium 7 is extracted in a countercurrent mode to rise the film and evaporate and reduce the specific gravity, and in a central cylinder siphon descending channel, the softening water supplementing temperature is lower and the specific gravity is larger, so the heat pump working medium is submerged under the action of gravity, thereby forming the siphon circulation driving and enhancing heat transfer.
The siphon circulation countercurrent heating rising film steam boiler condenser 6 in the tube side is provided with a circular ring distribution vertical siphon heat release tube bundle 6-3 in the middle part, water vapor with absolute pressure of 0.8bar and flow rate of 7t/h is generated by rising film evaporation, and is compressed and output by a hot compression steam ejector 10 through a top water vapor outlet 6-5 after being separated by a top second separation cavity 6-2; and the pressure switch 12 and the temperature switch 13 arranged on the inner wall of the top second separation cavity 6-2 jointly control the water vapor flow of the thermal compression type vapor ejector 5. The produced water vapor with absolute pressure of 0.8bar and flow rate of 7t/h is ejected and diffused by high-pressure water vapor 11 with absolute pressure of 9bar and flow rate of 3t/h flowing through the hot compression type steam ejector 10 to be modulated into medium-pressure water vapor with absolute pressure of 1bar and flow rate of 12t/h, and the medium-pressure water vapor is output in a hot compression mode.
The high-pressure gaseous heat pump working medium 7 of the shell side air outlet 6-8 of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler condenser 6 flows through the high-pressure air inlet of the ejector 1-9 by the pipeline and the two-way valve 1-10, and is ejected at high speed by the nozzle, the formed negative pressure ejects lubricating oil by the injection port, the pipeline and the two-way valve 1-10 and the oil suction port 1-8 at the upper part of the pipe side of the in-pipe siphon circulation countercurrent heat-taking climbing film evaporator 1, and is mixed and diffused into medium-pressure fluid, and then is sent back to the oil suction port 5-1 of the air suction pipe of the compressor 5 by the medium-pressure outlet, the pipeline and the two-way valve 1-10.
And starting a vacuum pump 14 with the air extraction flow of 3m3/min, extracting non-condensable gas in the shell side condensation 2 of the heat rising film evaporator 1 from the non-condensable gas outlet 1-11 by siphon circulation countercurrent, and discharging the non-condensable gas to the environment.
Claims (4)
1. A vertical tube rising film condensing source heat pump driven steam boiler is characterized in that a siphon circulation countercurrent heating rising film evaporator (1) in a tube is adopted; a condensing inlet (1-1); a first separation chamber (1-2); the circular rings are distributed with vertical siphon heat-taking tube clusters (1-3); a first shunt chamber (1-4); a condensate outlet (1-5); a liquid heat pump working medium inlet (1-6); a gaseous heat pump working medium outlet (1-7); an oil suction port (1-8); an ejector (1-9); two-way valves (1-10); a noncondensable gas outlet (1-11); condensing (2); a liquid level switch (3); an expansion valve (4); a dry filter (4-1); a compressor (5); an oil return port (5-1); a drive device (5-2); a regenerator (5-3); a siphon circulation countercurrent heating rising film steam boiler condenser (6) in the pipe; a softening water supplementing inlet (6-1); a second separation chamber (6-2); the circular ring is distributed with vertical siphon heat release tube clusters (6-3); a second shunt chamber (6-4); a water vapor outlet (6-5); a gaseous heat pump working medium inlet (6-6); a liquid heat pump working medium outlet (6-7); an air outlet (6-8); a heat pump working medium (7); softening and supplementing water (8); a softening water supply flow regulating valve (9); a water vapor compressor (10); high pressure water vapor (11); a pressure switch (12); a temperature switch (13); vacuum pump (14) constitution, its characterized in that: the gaseous heat pump working medium outlet (1-7) at the top of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator (1) is connected with the compressor (5) through a pipeline, the shell side of the tube-in siphon circulation countercurrent heat-taking climbing film steam boiler condenser (6), the drying filter (4-1), the expansion valve (4) and the liquid heat pump working medium inlet (1-6) at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film evaporator (1) form a heat pump circulation loop; the siphon circulation countercurrent heat-extraction rising film evaporator (1) in the pipe comprises a top condensing inlet (1-1) of the shell side of the evaporator (1), a middle circular ring distributed vertical siphon heat-extraction tube cluster (1-3) outside and a bottom condensate outlet (1-5), so as to form a condensing countercurrent heat-release loop; the method comprises the steps that an in-pipe siphon circulation countercurrent heat-taking climbing film evaporator (1) is composed of a bottom liquid heat pump working medium inlet (1-6) of a tube side, a bottom first diversion cavity (1-4), the inner side of a middle circular ring distribution vertical siphon heat-taking tube cluster (1-3), a top first separation cavity (1-2) and a top gaseous heat pump working medium outlet (1-7), wherein the circular ring distribution vertical siphon heat-taking tube cluster (1-3) is a circular ring distribution vertical tube cluster, a cylindrical space siphon descending channel is arranged in the center, a plurality of cylindrical spaces on the inner wall of the tube cluster are arranged as siphon ascending channels, and the circulation area of the siphon descending channel is approximately equal to that of the siphon ascending channel; the shell of the siphon circulation countercurrent heat-taking climbing film evaporator (1) in the pipe is a cylindrical surface which is vertically arranged; a liquid level switch (3) is arranged on the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing-film evaporator (1), the opening degree of an expansion valve (4) is controlled in a closed loop mode according to a heat pump working medium liquid level signal, and an outlet of the expansion valve (4) is connected with a liquid heat pump working medium inlet (1-6) at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing-film evaporator (1) through a pipeline to form a heat pump working medium expansion loop; the heat pump working medium countercurrent heat release loop is formed by a top gaseous heat pump working medium inlet (6-6) of the shell side of a condenser (6) of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler, a middle circular ring distributed vertical siphon heat release tube bundle (6-3) outer side and a bottom liquid heat pump working medium outlet (6-7); the method comprises the steps that an in-pipe siphon circulation countercurrent heat-taking rising film evaporation loop is formed by a bottom softening water supplementing inlet (6-1), a bottom second diversion cavity (6-4), the inner side of a middle circular ring distribution vertical siphon heat-releasing tube cluster (6-3), a top second separation cavity (6-2) and a top water vapor outlet (6-5) of a tube side siphon circulation countercurrent heat-taking rising film steam boiler condenser (6), wherein the circular ring distribution vertical siphon heat-releasing tube cluster (6-3) is a circular ring distribution vertical tube cluster, a cylindrical space siphon descending channel is arranged in the center, a plurality of cylindrical spaces on the inner wall of the tube cluster are arranged as siphon ascending channels, and the flow areas of the siphon descending channel and the siphon ascending channel are approximately equal; the shell of the in-pipe siphon circulation countercurrent heat-taking climbing film steam boiler condenser (6) is a cylindrical surface which is vertically arranged; a liquid level switch (3) is arranged on the inner wall of the upper part of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film steam boiler condenser (6), the opening of a softening water supplementing flow regulating valve (9) is controlled in a closed loop mode according to a softening water supplementing water level signal, and an outlet of the softening water supplementing flow regulating valve (9) is connected with a softening water supplementing inlet (6-1) at the bottom of the tube side of the tube-in siphon circulation countercurrent heat-taking climbing film steam boiler condenser (6) through a pipeline to form a softening water supplementing flow regulating loop; the siphon circulation countercurrent heating rising film steam boiler condenser (6) in the pipe side is connected with a steam compressor (10) through a pipeline at the top steam outlet (6-5) to form a steam compression loop; the inner wall of a second separation cavity (6-2) at the top of the tube side siphon circulation countercurrent heat-taking climbing film steam boiler condenser (6) is provided with a pressure switch (12) and a temperature switch (13) respectively; a non-condensable gas outlet (1-11) in the middle of the shell side of the heat-taking rising film evaporator (1) is formed in a siphon circulation countercurrent manner in an air inlet connecting pipe of the vacuum pump (14) to form a non-condensable gas outlet loop; the siphon circulation countercurrent heat-taking rising film evaporator (1) in the pipe is characterized in that an oil suction port (1-8) at the upper part of a pipe side of the evaporator (1) is connected with a low-pressure injection port of an ejector (1-9) through a pipeline and a two-way valve (1-10), an air outlet (6-8) at the upper part of a shell side of the condenser (6) of the siphon circulation countercurrent heat-taking rising film steam boiler in the pipe is connected with a high-pressure air inlet of the ejector (1-9) through the pipeline and the two-way valve (1-10), and an oil return port (5-1) of an air suction pipe of the compressor (5) is connected with a medium-pressure air outlet of the ejector (1-9) through the pipeline and the two-way valve (1-10) to form an oil return loop of the siphon circulation countercurrent heat-taking rising film evaporator (1) in the pipe; the inner wall of the upper part of the tube side of the tube internal siphon circulation countercurrent heat-taking and film-rising steam boiler condenser (6) is provided with a liquid level switch (3), the opening of a softening and water supplementing flow regulating valve (9) is controlled in a closed loop mode according to a softening and water supplementing water level signal, the inlet of the softening and water supplementing flow regulating valve (9) is connected with the outlet of a heat regenerator (5-3) of a driving device (5-2) through a pipeline, and the outlet of the softening and water supplementing flow regulating valve is connected with the softening and water supplementing inlet (6-1) at the bottom of the tube side of the tube internal siphon circulation countercurrent heat-taking and film-rising steam boiler condenser (6) through a pipeline connecting tube to form a softening and water supplementing heat-returning and flow regulating loop.
2. The riser film-lifting condensing source heat pump driven steam boiler of claim 1, wherein: the water vapor compressor (10) is a hot compression type steam ejector, high-pressure water vapor (11) flows through a steam inlet of the hot compression type steam ejector and is ejected out at a high speed by a nozzle, the formed negative pressure is used for siphon circulation countercurrent heat-taking water vapor generated at the top of a tube side of the condenser (6) of the rising film steam boiler through an ejector pipe of the hot compression type steam ejector, and the water vapor is mixed and diffused into medium-pressure and high-pressure water vapor and flows out through a steam outlet of the hot compression type steam ejector.
3. The riser film-lifting condensing source heat pump driven steam boiler of claim 1, wherein: the condensing steam (2) is a liquid waste heat medium or a gaseous waste heat medium.
4. The riser film-lifting condensing source heat pump driven steam boiler of claim 1, wherein: the driving device (5-2) is an electric motor, or a gas-driven internal combustion engine, or a gasoline-driven internal combustion engine, or a diesel-driven internal combustion engine, or a kerosene-driven internal combustion engine, or a Stirling external combustion engine, or a gas-driven gas turbine engine.
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| CN201610791413.5A CN106287622B (en) | 2016-08-21 | 2016-08-21 | Vertical tube rising film condensing source heat pump driven steam boiler |
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| CN201610791413.5A CN106287622B (en) | 2016-08-21 | 2016-08-21 | Vertical tube rising film condensing source heat pump driven steam boiler |
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| JPH0771705A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | Plate fin type evaporator |
| RU47487U1 (en) * | 2005-03-25 | 2005-08-27 | Выборнов Вячеслав Георгиевич | HEAT RECYCLING UNIT |
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| WO2015064347A1 (en) * | 2013-10-31 | 2015-05-07 | 富士電機株式会社 | Vapor generation device and vapor generation heat pump |
| CN105841399A (en) * | 2016-05-03 | 2016-08-10 | 侴乔力 | Engine-driven water source compression type heat pump water vapor modulating machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITDP20040005A1 (en) * | 2004-12-20 | 2005-03-20 | Stefano Bandini | CONDENSING MODULE FOR BOILER |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771705A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | Plate fin type evaporator |
| RU47487U1 (en) * | 2005-03-25 | 2005-08-27 | Выборнов Вячеслав Георгиевич | HEAT RECYCLING UNIT |
| WO2012145406A2 (en) * | 2011-04-18 | 2012-10-26 | Holtec International, Inc. | Autonomous self-powered system for removing thermal energy from pools of liquid heated by radioactive materials, and methods of the same |
| WO2013137705A1 (en) * | 2012-03-14 | 2013-09-19 | Essaid Raoui | Water heater having an unpressurised tank with a thermosyphon exchanger |
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