CN108151354A - Liquified natural gas powered ship refrigerating plant and refrigerating method - Google Patents
Liquified natural gas powered ship refrigerating plant and refrigerating method Download PDFInfo
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- CN108151354A CN108151354A CN201711178037.3A CN201711178037A CN108151354A CN 108151354 A CN108151354 A CN 108151354A CN 201711178037 A CN201711178037 A CN 201711178037A CN 108151354 A CN108151354 A CN 108151354A
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- Prior art keywords
- natural gas
- refrigerating chamber
- enters
- liquified natural
- refrigerating
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Classifications
-
- 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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
- F25B49/043—Operating continuously
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a kind of liquified natural gas powered ship refrigerating plant and refrigerating methods, including liquid natural gas tank, the liquified natural gas of liquid natural gas tank passes sequentially through the first air-cooler of refrigerating chamber, second air-cooler of refrigerating chamber, First Heat Exchanger enters diesel engine, the tail gas of diesel engine discharge enters steam generator, the potassium bromide of steam generator enters absorber by the second heat exchanger, the water vapour of steam generator passes sequentially through condenser, first throttle valve, air-conditioning cold hydrophone, condenser/evaporator, enter absorber after the third air-cooler of refrigerating chamber, the potassium bromide solution of absorber is pumped into the second heat exchanger by solution pump and is recycled；The carbon dioxide gas of carbon-dioxide gas compressor enters the 4th air-cooler of refrigerating chamber by condenser/evaporator, second throttle.The present invention has the characteristics of can efficiently using liquified natural gas cold energy and thermal energy, environmental protection, reduction production cost.
Description
Technical field
The present invention relates to marine refrigeration technical fields, and liquified natural gas cold energy and heat can be efficiently used more particularly, to one kind
Can, environmental protection reduces the liquified natural gas powered ship refrigerating plant and refrigerating method of production cost.
Background technology
Environmental problem is increasingly paid attention in present economic development, and common fossil energy makes liquified natural gas to environmental hazard
The use of (Liquid Natural Gas) clean energy resource is increasingly paid attention to.The storage temperature of liquified natural gas is subzero
163 degrees Celsius, feed air temperature is room temperature, therefore there are huge temperature difference cold energy.River sea Intermodal cargo transport pattern has become length
The new economic form of triangle, either container ship or the Changjiang river oil tanker carrying passenger boat, personnel need air-conditioning, and cargo needs
It freezes, refrigerate.Since the harm to environment is just gradually being eliminated, environment friendly refrigerating fluid becomes following and freezes freon refrigerant
Industry development trend, at present liquified natural gas powered ship good profit is not subject to the cold energy of liquified natural gas, thermal energy
With.
Invention content
The goal of the invention of the present invention is that energy utilization rate of the prior art is low, causes environmental pollution not in order to overcome
Foot, liquified natural gas cold energy and thermal energy can be efficiently used by providing one kind, environmental protection, reduce the liquified natural gas of production cost
Powered ship refrigerating plant and refrigerating method.
To achieve these goals, the present invention uses following technical scheme：
A kind of liquified natural gas powered ship refrigerating plant, including liquid natural gas tank, the liquid day of liquid natural gas tank
So gas passes sequentially through the first air-cooler of refrigerating chamber, the second air-cooler, the First Heat Exchanger of refrigerating chamber enter diesel engine, diesel engine
The tail gas of discharge enters steam generator, and the potassium bromide of steam generator enters absorber, steam generation by the second heat exchanger
The water vapour of device passes sequentially through the third air-cooler of condenser, first throttle valve, air-conditioning cold hydrophone, condenser/evaporator, refrigerating chamber
Enter absorber afterwards, the potassium bromide solution of absorber is pumped into the second heat exchanger by solution pump and is recycled；Carbon dioxide
The carbon dioxide gas of compressor enters the 4th air-cooler of refrigerating chamber by condenser/evaporator, second throttle.
Preferably, freezing indoor freezing liquid pipeline equipped with temperature detector, liquid natural feed channel is equipped with stream
Amount controller, temperature detector are connect with flow controller by lever.
Preferably, temperature detector upper end is equipped with temperature sense copper ring, temperature sense copper ring is included through upper half circle
Copper sheet, lower semi-circular copper sheet and the elliptical shape ball being connect with lower semi-circular copper sheet, elliptical shape ball, which is internally provided with several, to be stretched up and down
Spiral helicine temperature sense copper wire, elliptical shape ball lower part connect with lever, and upper half circle copper sheet, lower semi-circular copper sheet pass through pin
Fixation is wrapped on the freezing liquid pipeline in refrigerating chamber.
Preferably, flow controller includes tightener, tightener upper end is equipped with fixed transverse rod, during tightener lower end is equipped with
Empty control box, control box upper end opening, the control-rod of tightener can be moved up and down along control box upper end；Control box is internally provided with
The circular control sheet being connect with the control-rod of tightener, control box are connect with pipeline, and control sheet can be inserted into pipeline.
Preferably, tightener include upper connecting rod, lower connecting rod and connector sleeve, upper connecting rod, lower connecting rod appearance
Face is respectively the opposite screw thread in direction, and connector sleeve is threadedly coupled respectively with upper connecting rod, lower connecting rod.
A kind of refrigerating method of liquified natural gas powered ship refrigerating plant, includes the following steps：
The detection of (6-1) temperature detector freezes indoor temperature, when the temperature for freezing indoor freezing liquid pipe keeps low level
When, temperature detector is shunk, and so as to open flow controller, liquified natural gas enters refrigerating chamber；
(6-2) liquified natural gas enters refrigerating chamber and cools down to refrigerating chamber, make freezer temperature be maintained at -40 DEG C to -
In 20 DEG C, the liquified natural gas come out from refrigerating chamber enters refrigerating chamber, cools down to refrigerating chamber, room temperature that Keep cool is 5
DEG C in 15 DEG C；
(6-3) liquified natural gas enters First Heat Exchanger by heating and gasifying, and the natural gas after gasification enters diesel engine conduct
Power, diesel engine drive generator or propeller (23) to work by connecting shaft (22)；
The waste heat of (6-4) diesel engine enters steam generator, and the lithium-bromide solution in steam generator is heated, production
Raw vapor enters condenser, and remaining lithium bromide enters absorber by the second heat exchanger；
The vapor that (6-5) steam generator generates is cooled to liquid by condenser, and liquid water passes through first throttle valve
Into air-conditioning cold hydrophone, air conditioner refrigerating is carried out as cold source of air conditioning；
The cooling water of (6-6) air-conditioning cold hydrophone enters refrigerating chamber by condenser/evaporator, the cooling water come out from refrigerating chamber
Into absorber, absorb lithium bromide and form lithium-bromide solution；
(6-7) lithium-bromide solution, which is pumped by solution pump after the second heat exchanger carries out heat exchange, enters steam generator progress
It recycles.
Preferably, (6-1) includes the following steps：
(7-1) temperature sense copper ring carries out temperature conduction, and the temperature sense copper wire in elliptical shape ball is made to be cooled and is shunk, ellipse
Ball deforms upon, and drive connect lever one end with elliptical shape ball and moves downward；
The other end that (7-2) lever is connect with flow controller is lifted up, and by tightener, control sheet is driven to carry upwards
It rises, liquified natural gas enters refrigerating chamber.
Therefore, the present invention has the advantages that：Be effectively utilized the cold energy of liquified natural gas as clean energy resource into
Row refrigeration, environment-friendly high-efficiency.Power after liquified natural gas gasification as diesel engine, the present invention is to the cold energy and heat of liquified natural gas
It can reasonably utilize, not only environmental protection but also reduce production cost, increased economic efficiency.
Description of the drawings
Fig. 1 is a kind of flow chart of the present invention；
Fig. 2 is a kind of structure diagram of the temperature detector of the present invention；
Fig. 3 is a kind of structure diagram of the flow controller of the present invention；
Fig. 4 is a kind of structure diagram of the tightener of the present invention；
Fig. 5 is the temperature detector of the present invention and a kind of structure diagram of flow controller.
In figure：Liquid natural gas tank 1, refrigerating chamber 2, the first air-cooler 3, refrigerating chamber 4, the second air-cooler 5, First Heat Exchanger
6, diesel engine 7, steam generator 8, the second heat exchanger 9, absorber 10, condenser 11, first throttle valve 12, air-conditioning cold hydrophone
13, condenser/evaporator 14, third air-cooler 15, solution pump 16, carbon-dioxide gas compressor 17, second throttle 18, the 4th cold wind
Machine 19, temperature detector 20, flow controller 21, connecting shaft 22, generator or propeller 23, temperature sense copper ring 201 are oval
Ball 202, temperature sense copper wire 203, tightener 211, cross bar 212, control box 213, control-rod 214, controller 215, upper connection
Bar 2111, lower connecting rod 2112, connector sleeve 2113.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment shown in FIG. 1 is a kind of liquified natural gas powered ship refrigerating plant, including liquid natural gas tank 1, liquid
The liquified natural gas of state natural gas tank passes sequentially through the second air-cooler 5, first of the first air-cooler 3 of refrigerating chamber 2, refrigerating chamber 4
Heat exchanger 6 enters diesel engine 7, and the tail gas of diesel engine discharge enters steam generator 8, and the potassium bromide of steam generator passes through second
Heat exchanger 9 enters absorber 10, and the water vapour of steam generator passes sequentially through condenser 11, first throttle valve 12, air conditioner cold water
Device 13, condenser/evaporator 14, refrigerating chamber third air-cooler 15 after enter absorber, the potassium bromide solution of absorber passes through solution
Pump 16 is pumped into the second heat exchanger and is recycled；The carbon dioxide gas of carbon-dioxide gas compressor 17 by condenser/evaporator,
Second throttle 18 enters the 4th air-cooler 19 of refrigerating chamber.It freezes indoor freezing liquid pipeline and is equipped with temperature detector 20,
Liquid natural feed channel is equipped with flow controller 21, and temperature detector is connect with flow controller by lever.
Fig. 2, temperature detector upper end shown in fig. 5 are equipped with temperature sense copper ring 201, and temperature sense copper ring is included by upper
Semicircle copper sheet, lower semi-circular copper sheet and the elliptical shape ball 202 being connect with lower semi-circular copper sheet, elliptical shape ball is internally provided with several can
Flexible spiral helicine temperature sense copper wire 203, elliptical shape ball lower part are connect with lever up and down, upper half circle copper sheet, lower semi-circular
Copper sheet is fixed by pin on the freezing liquid pipeline being wrapped in refrigerating chamber.
Fig. 3, flow controller shown in fig. 5 include tightener 211, and tightener upper end is equipped with fixed transverse rod 212, tightener
Lower end is equipped with hollow control box 213, control box upper end opening, and the control-rod 214 of tightener can be moved down along control box upper end
It is dynamic；Control box is internally provided with the circular control sheet 215 being connect with the control-rod of tightener, and control box is connect with pipeline, control
Piece can be inserted into pipeline.Tightener shown in Fig. 4 includes upper connecting rod 2111, lower connecting rod 2112 and connector sleeve 2113, upper company
Extension bar, lower connecting rod outer surface be respectively the opposite screw thread in direction, connector sleeve connects respectively with upper connecting rod, lower connecting rod screw thread
It connects.
As shown in Figure 1, the refrigerating method of liquified natural gas powered ship refrigerating plant, includes the following steps：
Step 100：Temperature detector detection freezes indoor temperature, when the temperature for freezing indoor freezing liquid pipe keeps low
During position, temperature detector is shunk, and so as to open flow controller, liquified natural gas enters refrigerating chamber；
Step 110：Temperature sense copper ring carries out temperature conduction, and the temperature sense copper wire in elliptical shape ball is made to be cooled and is received
Contracting, elliptical shape ball deform upon, and drive connect lever one end with elliptical shape ball and moves downward；
Step 120：The other end that lever is connect with flow controller is lifted up, by tightener, drive control sheet to
On lift, liquified natural gas enters refrigerating chamber.
Step 200：Liquified natural gas enters refrigerating chamber and cools down to refrigerating chamber, and freezer temperature is made to be maintained at -40 DEG C
To in -20 DEG C, the liquified natural gas come out from refrigerating chamber enters refrigerating chamber, cools down to refrigerating chamber, room temperature that Keep cool
In 5 DEG C to 15 DEG C；
Step 300：Liquified natural gas enters First Heat Exchanger by heating and gasifying, and the natural gas after gasification enters diesel engine work
For power, diesel engine drives generator or propeller (23) to work by connecting shaft (22)；
Step 400：The waste heat of diesel engine enters steam generator, and the lithium-bromide solution in steam generator is added
Heat, the vapor of generation enter condenser, and remaining lithium bromide enters absorber by the second heat exchanger；
Step 500：The vapor that steam generator generates is cooled to liquid by condenser, and liquid water passes through first throttle
Valve enters air-conditioning cold hydrophone, and air conditioner refrigerating is carried out as cold source of air conditioning；
Step 600：The cooling water of air-conditioning cold hydrophone enters refrigerating chamber by condenser/evaporator, the cooling come out from refrigerating chamber
Water enters absorber, absorbs lithium bromide and forms lithium-bromide solution；
Step 700：Lithium-bromide solution, which is pumped by solution pump after the second heat exchanger carries out heat exchange, enters steam generator
It is recycled.
It should be understood that this embodiment is only used to illustrate the invention but not to limit the scope of the invention.In addition, it should also be understood that,
After having read the content of the invention lectured, those skilled in the art can make various modifications or changes to the present invention, these etc.
Valency form is also fallen within the scope of the appended claims of the present application.
Claims (7)
1. a kind of liquified natural gas powered ship refrigerating plant, it is characterized in that, including liquid natural gas tank (1), liquified natural gas
The liquified natural gas of tank passes sequentially through the first air-cooler (3) of refrigerating chamber (2), the second air-cooler (5) of refrigerating chamber (4), first
Heat exchanger (6) enters steam generator (8) into diesel engine (7), the tail gas of diesel engine discharge, and the potassium bromide of steam generator is led to
The second heat exchanger (9) is crossed into absorber (10), the water vapour of steam generator passes sequentially through condenser (11), first throttle valve
(12), the third air-cooler (15) of air-conditioning cold hydrophone (13), condenser/evaporator (14), refrigerating chamber is afterwards into absorber, absorber
Potassium bromide solution the second heat exchanger be pumped by solution pump (16) recycled；The dioxy of carbon-dioxide gas compressor (17)
Change carbon gas by condenser/evaporator, second throttle (18) into refrigerating chamber the 4th air-cooler (19).
2. liquified natural gas powered ship refrigerating plant according to claim 1, it is characterized in that, freeze indoor freezing liquid
Pipeline is equipped with temperature detector (20), and liquid natural feed channel is equipped with flow controller (21), temperature detector and flow
Controller is connected by lever.
3. liquified natural gas powered ship refrigerating plant according to claim 2, it is characterized in that, temperature detector upper end is set
There is temperature sense copper ring (201), temperature sense copper ring is included through upper half circle copper sheet, lower semi-circular copper sheet and and lower semi-circular
The elliptical shape ball (202) of copper sheet connection, elliptical shape ball are internally provided with several spiral helicine temperature sense copper wires that can be stretched up and down
(203), elliptical shape ball lower part is connect with lever, and upper half circle copper sheet, lower semi-circular copper sheet are wrapped in refrigerating chamber by pin fixation
On interior freezing liquid pipeline.
4. liquified natural gas powered ship refrigerating plant according to claim 2, it is characterized in that, flow controller includes receiving
Tight device (211), tightener upper end are equipped with fixed transverse rod (212), and tightener lower end is equipped with hollow control box (213), control box
Upper end opening, the control-rod (214) of tightener can be moved up and down along control box upper end；Control box is internally provided with the control with tightener
The circular control sheet (215) of bar connection processed, control box is connect with pipeline, and control sheet can be inserted into pipeline.
5. liquified natural gas powered ship refrigerating plant according to claim 4, it is characterized in that, tightener includes upper connection
Bar (2111), lower connecting rod (2112) and connector sleeve (2113), upper connecting rod, lower connecting rod outer surface be respectively that direction is opposite
Screw thread, connector sleeve respectively with upper connecting rod, lower connecting rod be threadedly coupled.
6. a kind of refrigerating method of the liquified natural gas powered ship refrigerating plant based on described in claim 2, it is characterized in that, packet
Include following steps：
The detection of (6-1) temperature detector freezes indoor temperature, when the temperature for freezing indoor freezing liquid pipe keeps low level, temperature
It spends detector to shrink, so as to open flow controller, liquified natural gas enters refrigerating chamber；
(6-2) liquified natural gas enters refrigerating chamber and cools down to refrigerating chamber, and freezer temperature is made to be maintained at -40 DEG C to -20 DEG C
Interior, the liquified natural gas come out from refrigerating chamber enters refrigerating chamber, cools down to refrigerating chamber, room temperature that Keep cool is arrived at 5 DEG C
In 15 DEG C；
(6-3) liquified natural gas enters First Heat Exchanger by heating and gasifying, and the natural gas after gasification enters diesel engine as power,
Diesel engine drives generator or propeller (23) to work by connecting shaft (22)；
The waste heat of (6-4) diesel engine enters steam generator, and the lithium-bromide solution in steam generator is heated, generation
Vapor enters condenser, and remaining lithium bromide enters absorber by the second heat exchanger；
The vapor that (6-5) steam generator generates is cooled to liquid by condenser, and liquid water is entered by first throttle valve
Air-conditioning cold hydrophone carries out air conditioner refrigerating as cold source of air conditioning；
The cooling water of (6-6) air-conditioning cold hydrophone enters refrigerating chamber by condenser/evaporator, and the cooling water come out from refrigerating chamber enters
Absorber absorbs lithium bromide and forms lithium-bromide solution；
(6-7) lithium-bromide solution is pumped into after the progress heat exchange of the second heat exchanger by solution pump and is recycled into steam generator
It utilizes.
7. the refrigerating method of liquified natural gas powered ship refrigerating plant according to claim 6, temperature detector upper end
Equipped with temperature sense copper ring, temperature sense copper ring include by upper half circle copper sheet, lower semi-circular copper sheet and with lower semi-circular copper
The elliptical shape ball of piece connection, elliptical shape ball are internally provided with several spiral helicine temperature sense copper wires that can be stretched up and down, under elliptical shape ball
Portion is connect with lever, and upper half circle copper sheet, lower semi-circular copper sheet are wrapped in the freezing liquid pipeline in refrigerating chamber by pin fixation
On；It is characterized in that (6-1) includes the following steps：
(7-1) temperature sense copper ring carries out temperature conduction, and the temperature sense copper wire in elliptical shape ball is made to be cooled and is shunk, elliptical shape ball
It deforms upon, drive connect lever one end with elliptical shape ball and moves downward；
The other end that (7-2) lever is connect with flow controller is lifted up, and by tightener, control sheet is driven to be lifted up,
Liquified natural gas enters refrigerating chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178037.3A CN108151354A (en) | 2017-11-22 | 2017-11-22 | Liquified natural gas powered ship refrigerating plant and refrigerating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178037.3A CN108151354A (en) | 2017-11-22 | 2017-11-22 | Liquified natural gas powered ship refrigerating plant and refrigerating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108151354A true CN108151354A (en) | 2018-06-12 |
Family
ID=62469029
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711178037.3A Withdrawn CN108151354A (en) | 2017-11-22 | 2017-11-22 | Liquified natural gas powered ship refrigerating plant and refrigerating method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431203A (en) * | 1972-05-27 | 1976-04-07 | Sulzer Ag | Powered mobile liquefied gas carriers |
| DE3726493A1 (en) * | 1987-08-08 | 1989-02-16 | Kaelte Und Klimatechnik Mbh & | Method and device for limiting the room temperature in the case of drive machines which are arranged in closed rooms and develop waste heat |
| CN103189273A (en) * | 2010-08-25 | 2013-07-03 | 瓦特西拉石油和天然气***有限公司 | A method and arrangement for providing LNG fuel for ships |
| CN203824198U (en) * | 2014-02-20 | 2014-09-10 | 武汉三江航天远方科技有限公司 | Marine LNG (Liquefied Natural Gas) cold energy and flue gas waste heat comprehensive utilization system |
| CN105202806A (en) * | 2015-10-26 | 2015-12-30 | 中国水产科学研究院渔业机械仪器研究所 | Ship cooling system and cooling method for composite using of LNG and refrigerating unit cold energy |
-
2017
- 2017-11-22 CN CN201711178037.3A patent/CN108151354A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431203A (en) * | 1972-05-27 | 1976-04-07 | Sulzer Ag | Powered mobile liquefied gas carriers |
| DE3726493A1 (en) * | 1987-08-08 | 1989-02-16 | Kaelte Und Klimatechnik Mbh & | Method and device for limiting the room temperature in the case of drive machines which are arranged in closed rooms and develop waste heat |
| CN103189273A (en) * | 2010-08-25 | 2013-07-03 | 瓦特西拉石油和天然气***有限公司 | A method and arrangement for providing LNG fuel for ships |
| CN203824198U (en) * | 2014-02-20 | 2014-09-10 | 武汉三江航天远方科技有限公司 | Marine LNG (Liquefied Natural Gas) cold energy and flue gas waste heat comprehensive utilization system |
| CN105202806A (en) * | 2015-10-26 | 2015-12-30 | 中国水产科学研究院渔业机械仪器研究所 | Ship cooling system and cooling method for composite using of LNG and refrigerating unit cold energy |
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Application publication date: 20180612 |
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| WW01 | Invention patent application withdrawn after publication |