CN110220108A - A kind of LNG is from pressurized tanks - Google Patents
A kind of LNG is from pressurized tanks Download PDFInfo
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- CN110220108A CN110220108A CN201910525809.9A CN201910525809A CN110220108A CN 110220108 A CN110220108 A CN 110220108A CN 201910525809 A CN201910525809 A CN 201910525809A CN 110220108 A CN110220108 A CN 110220108A
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- Prior art keywords
- fluid reservoir
- pressure
- lng
- control unit
- thermal resistance
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0332—Safety valves or pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
Abstract
The invention discloses a kind of LNG from pressurized tanks, it is related to use for laboratory self-boosted liquid-supplying storage tank technical field.Its fluid reservoir ontology is made of stainless steel inner container, stainless steel casing, vacuum insulation interlayer, valve pipeline, and valve pipeline is arranged in the top of fluid reservoir ontology；Pressure sensor, temperature sensor, liquid level sensor in auxiliary hot supercharging device are arranged in the top of fluid reservoir ontology, pressure sensor, temperature sensor, liquid level sensor, power supply are electrically connected with control unit respectively, thermal resistance piece is arranged in the outer surface of stainless steel inner container, thermal resistance piece outer surface is covered with insulation and thermal insulation coating, and thermal resistance piece is electrically connected with power supply, control unit.The present invention has the advantages that it controls the vaporization of LNG in tank with the size of thermal resistance piece power, the physical states such as pressure inside the tank, liquid level, temperature can more be accurately controlled, operation is more easy, and insulation and thermal insulation coating can reduce the heat losses of thermal resistance, reduces waste.
Description
Technical field
The present invention relates to use for laboratory self-boosted liquid-supplying storage tank technical fields, and in particular to a kind of LNG is from pressurized tanks.
Background technique
The initial liquefaction natural gas for being filled into fluid reservoir is generally under normal pressure state, is being carried out in use, need to be first right
Storage tank is carried out from being pressurized, and when pressure increase is to after going out liquid and need pressure limit, then is started to carry out out liquid and is supplied.From the basic of pressurization
Principle is that the cryogenic liquid discharge in storage tank is returned again to the gas-phase space from storage tank through vaporizer vaporization.Due to the ratio of gas
Volume is more much bigger than the ratio volume of liquid, so as to achieve the purpose that storage tank is pressurized using LNG in gas extrusion storage tank.
The switch control that the fluid reservoir of the prior art only passes through manually-operated gate from pressure charging system takes liquid and from pressurizing action, stores up
Pressure oscillation in tank is larger, is unable to accurately control pressure and flow.CN201720938193.4 discloses a kind of low-temperature storage tank
Quickly from pressure piping, it is realized certainly by upper anti-sealing gland pipe, liquid phase shut-off valve, gasification pressurization device, booster pump, gas phase shut-off valve
Pressurization increases liquid outlet quantity, improves the utilization efficiency of storage tank, but needs using outer energy booster pump and gasification pressurization device, and presses
Fluctuation is larger, is unable to control pressure and flow.
Using LNG as the colleges and universities of research direction and research institute, the works such as different pressure, flow can be related to by carrying out LNG test
Condition, existing storage tank can not meet the needs of in laboratory well.Therefore it studies and a kind of simple and effective control may be implemented
LNG storage tank is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of LNG from pressurized tanks, and the test for being able to satisfy different operating conditions is used,
It is easy to control, easy to operate, structure is simple, pressure and flow can be controlled.
In order to solve the above technical problems, the technical solution of the present invention is as follows: it includes fluid reservoir ontology and auxiliary hot supercharging device；
The fluid reservoir ontology is made of stainless steel inner container, stainless steel casing, vacuum insulation interlayer, valve pipeline, valve pipeline arrangement
At the top of fluid reservoir ontology, including double safety valve, liquid in-out valve, blow valve and use air valve；The auxiliary hot supercharging device is by pressing
Force snesor, temperature sensor, liquid level sensor, thermal resistance piece, insulation and thermal insulation coating, control unit, power supply composition, wherein
Pressure sensor, temperature sensor, liquid level sensor are arranged in the top of fluid reservoir ontology, pressure sensor, temperature sensor,
Liquid level sensor, power supply are electrically connected with control unit respectively, and thermal resistance piece is arranged in the outer surface of stainless steel inner container, thermal resistance piece
Outer surface is covered with insulation and thermal insulation coating, and thermal resistance piece is electrically connected with power supply, control unit.
Further, the fluid reservoir ontology is cylinder, is vacuum insulation between stainless steel casing and stainless steel inner container
Interlayer, double safety valve are located at the top of fluid reservoir ontology, and liquid in-out valve and blow valve are respectively provided at two above fluid reservoir ontology
Side, is located at the upper side of fluid reservoir ontology with air valve, pressure sensor, temperature sensor, liquid level sensor induction end set
In the inside of fluid reservoir ontology.
Working principle is as follows: opening liquid in-out valve under original state, to LNG filling is carried out in stainless steel inner container, passes through prison
The signal for surveying liquid level sensor feedback determines LNG liquid level in fluid reservoir ontology, closes liquid in-out valve after reaching required liquid level, simultaneously
Initial parameter in fluid reservoir ontology is detected by pressure sensor, temperature sensor, liquid level sensor, by way of electric signal
Feed back to control unit, the initial liquefaction natural gas of fluid reservoir ontology is generally under normal pressure state this moment, carry out using
When, it needs first to carry out from pressurization fluid reservoir ontology；
A certain pressure is set in control unit, when operating pressure is less than setup pressure value, control unit connects thermal resistance piece
Power supply vaporizes LNG portion, more much bigger than the ratio volume of liquid than volume using gas, utilizes vapour
LNG gas extrusion liquid LNG after change is to reach fluid reservoir ontology supercharging effect；Control unit is transmitted by pressure sensor
The variation of pressure condition in signal detection fluid reservoir ontology, when state reaches predetermined state in tank, control unit disconnects electricity automatically
Source maintains pressure at this time；Using preceding standing a period of time, until pressure is stablized, after liquid phase layering, i.e., openable liquid in-out
Valve goes out pressurized LNG stream, carry out using；When required pressure is larger, the function of thermal resistance piece can be tuned up by control unit
Rate accelerates rate of pressurization, then reduces thermal resistance piece power when close to required pressure automatically, so that pressure is slowly pressurized to setting and presses
Power, this moment control unit auto power off.
After adopting the above structure, the present invention has the advantages that
1, pressure size, control pumping rate can not be adjusted according to the actual conditions of test compared to LNG storage tank on the market, this
Invention with auxiliary hot supercharging mode replace storage tank from pressure charging system, the vapour of LNG in tank is controlled with the size of thermal resistance piece power
Change degree；
2, control unit by the various sensors that receive acquires the state parameter of LNG in tank to adjust thermal resistance piece power, with
This can more accurately control the physical states such as pressure inside the tank, liquid level, temperature, operate more easy；Simultaneously instead of increasing certainly
The pressurization coil pipe and LNG vaporization device, structure of pressure are more simple；
3, the effect of insulation and thermal insulation coating is the heat losses for reducing thermal resistance, reduces waste.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is workflow schematic diagram of the invention.
Description of symbols: 1- double safety valve；2- pressure sensor；3- temperature sensor；4- liquid level sensor；5- disengaging
Liquid valve；6- air valve；7- stainless steel inner container；8- stainless steel casing；9- thermal resistance piece；10- insulation and thermal insulation coating；11- emptying
Valve；12- power supply；13- control unit；14- fluid reservoir ontology；LNG after 15- pressurization.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Mode, the present invention will be described in further detail.The following examples can make professional and technical personnel more comprehensively geographical
The solution present invention, but therefore the invention is limited to the scope of the described embodiments.
As shown in Figure 1, present embodiment adopts the following technical scheme that it includes fluid reservoir ontology 14 and auxiliary heat pressurization
Device；The fluid reservoir ontology 14 is made of stainless steel inner container 7, stainless steel casing 8, vacuum insulation interlayer, valve pipeline, valve
Door pipeline is arranged in the top of fluid reservoir ontology 14, including double safety valve 1, liquid in-out valve 5, with air valve 6 and blow valve 11, due to
The pressure of cryogenic liquid LNG is easy sharply to increase, and is influenced by environment temperature and equipment itself heat-insulating property, two safety are arranged
Valve, one is main safety valve, i.e. work safety valve, and pressure is higher, and relieving capacity is strong, prevents the discharge of the sharply superpressure such as fire from letting out
Pressure, another auxiliary safety valve, pressure is slightly lower, and relieving capacity is smaller, and a small amount of superpressure discharge serves as warning simultaneously, blow valve
11 effect is can be controlled by this valve when being filled with pump and fill liquid, can also be low by this Valved discharge
Gas at the top of warm bottle liner；
The auxiliary hot supercharging device is by pressure sensor 2, temperature sensor 3, liquid level sensor 4, thermal resistance piece 9, insulation and thermal insulation
Coating 10, power supply 12, control unit 13 form, and wherein pressure sensor 2, temperature sensor 3, liquid level sensor 4 are arranged in
The top of fluid reservoir ontology 14, pressure sensor 2, temperature sensor 3, liquid level sensor 4, power supply 12 respectively with control unit 13
Electrical connection, thermal resistance piece 9 are arranged in the outer surface of stainless steel inner container 7, and 9 outer surface of thermal resistance piece is covered with insulation and thermal insulation coating
10, thermal resistance piece 9 is electrically connected with power supply 12, control unit 13, and the effect of thermal resistance piece 9 is to accelerate to be promoted in fluid reservoir ontology 14
LNG temperature accelerates LNG vaporization in fluid reservoir ontology 14, to promote the pressure of LNG in fluid reservoir ontology 14, insulation and thermal insulation covering
10 effect of layer is the heat losses for reducing thermal resistance, and control unit 13 passes through pressure sensor 2, temperature sensor 3, level sensing
The electric signal that device 4 is fed back controls the size of 9 power of thermal resistance piece, and the pressure, temperature of LNG in fluid reservoir ontology 14 are controlled with this
The physical states such as degree, liquid level.
The fluid reservoir ontology 14 is cylinder, is vacuum insulation interlayer between stainless steel inner container 7 and stainless steel casing 8,
Double safety valve 1 is located at the top of fluid reservoir ontology 14, and liquid in-out valve 5 and blow valve 11 are respectively provided at 14 top of fluid reservoir ontology
Two sides, be located at the upper side of fluid reservoir ontology 14 with air valve 6, pressure sensor 2, temperature sensor 3, liquid level sensor 4
Induction end is located at the inside of fluid reservoir ontology 14.
Specific workflow is as follows: as shown in Fig. 2, under original state open liquid in-out valve 5, in stainless steel inner container 7 into
(process a) determines LNG liquid level in fluid reservoir ontology 14 by the signal that monitoring liquid level sensor 4 is fed back, reaches for row LNG filling
Liquid in-out valve 5(process b) is closed after required liquid level, while being examined by pressure sensor 2, temperature sensor 3, liquid level sensor 4
Initial parameter in fluid reservoir ontology 14 is surveyed, control unit 13(process c) is fed back to by way of electric signal, this moment fluid reservoir sheet
The initial liquefaction natural gas of body 14 is generally under normal pressure state, is being carried out in use, needing first to carry out fluid reservoir ontology 14
From pressurization.
A certain pressure is set in control unit 13, when operating pressure is less than setup pressure value, control unit 13 connects heat
The power supply 12(process d) of resistor disc 9 vaporizes LNG portion in fluid reservoir ontology 14, using gas than liquid than volume
It is more much bigger than volume, using the LNG gas extrusion liquid LNG after vaporization to reach 14 supercharging effect of fluid reservoir ontology (process e)；
Control unit 13 passes through the variation of pressure condition in the signal detection fluid reservoir ontology 14 that pressure sensor 2 transmits, when shape in tank
State reaches predetermined state, and 13 auto power off 12 of control unit maintains pressure at this time.Using preceding standing a period of time, to
Stablize to pressure, after liquid phase layering, i.e., openable liquid in-out valve 5 flows out pressurized LNG15, carries out using (process
F)；When required pressure is larger, the power of thermal resistance piece 9 can be tuned up by control unit 13, accelerates rate of pressurization, needed for
Then reduce 9 power of thermal resistance piece when pressure automatically, pressure is made slowly to be pressurized to setting pressure, control unit 13 disconnects automatically this moment
Power supply 12.Above-described double safety valve 1, pressure sensor 2, temperature sensor 3, liquid level sensor 4, liquid in-out valve 5, heat
The components such as resistor disc 9, insulation and thermal insulation coating 10, blow valve 11, power supply 12, control unit 13 are universal standard part or ability
The component that field technique personnel know, structure and principle are all that those skilled in the art can be learnt by technical manual or by normal
Rule experimental method is known, no longer illustrates.
Present embodiment controls the vaporization of LNG in tank with the size of thermal resistance piece power, and control unit is logical
The state parameter for crossing LNG in the various sensors acquisition tank received adjusts thermal resistance piece power, with this can more accurately
The physical states such as pressure inside the tank, liquid level, temperature are controlled, are operated more easy；Simultaneously instead of the pressurization coil pipe and LNG from pressurization
Vaporizer, structure are more simple；The effect of insulation and thermal insulation coating is the heat losses for reducing thermal resistance, reduces waste.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, under the premise of not departing from this practical spirit and range, various changes and improvements may be made to the invention,
These changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by the attached claims
Book and its equivalent thereof.
Claims (3)
1. a kind of LNG is from pressurized tanks, it is characterised in that: including fluid reservoir ontology and auxiliary hot supercharging device；The fluid reservoir sheet
Body is made of stainless steel inner container, stainless steel casing, vacuum insulation interlayer, valve pipeline, and valve pipeline is arranged in fluid reservoir ontology
Top, including double safety valve, liquid in-out valve, blow valve and use air valve；The auxiliary hot supercharging device is by pressure sensor, temperature
Sensor, liquid level sensor, thermal resistance piece, insulation and thermal insulation coating, control unit, power supply form, wherein pressure sensor, temperature
Degree sensor, liquid level sensor are arranged in the top of fluid reservoir ontology, pressure sensor, temperature sensor, liquid level sensor, electricity
Source is electrically connected with control unit respectively, and thermal resistance piece is arranged in the outer surface of stainless steel inner container, and thermal resistance piece outer surface is covered with
Insulation and thermal insulation coating, thermal resistance piece are electrically connected with power supply, control unit.
2. a kind of LNG according to claim 1 is from pressurized tanks, it is characterised in that: the fluid reservoir ontology is cylinder,
It is vacuum insulation interlayer between stainless steel casing and stainless steel inner container, double safety valve is located at the top of fluid reservoir ontology, liquid in-out
Valve and blow valve are respectively provided at the two sides above fluid reservoir ontology, and the upper side of fluid reservoir ontology is located at air valve, and pressure passes
Sensor, temperature sensor, liquid level sensor induction end be located at the inside of fluid reservoir ontology.
3. a kind of LNG according to claim 1 is from pressurized tanks, it is characterised in that: working principle is as follows: under original state
Liquid in-out valve is opened, to LNG filling is carried out in stainless steel inner container, fluid reservoir is determined by the signal of monitoring liquid level sensor feedback
LNG liquid level in ontology is closed liquid in-out valve after reaching required liquid level, while being passed by pressure sensor, temperature sensor, liquid level
Sensor detects initial parameter in fluid reservoir ontology, and control unit is fed back to by way of electric signal, this moment fluid reservoir ontology
Initial liquefaction natural gas is generally under normal pressure state, is being carried out in use, needing first to carry out from pressurization fluid reservoir ontology；
A certain pressure is set in control unit, when operating pressure is less than setup pressure value, control unit connects thermal resistance piece
Power supply vaporizes LNG portion, more much bigger than the ratio volume of liquid than volume using gas, utilizes vapour
LNG gas extrusion liquid LNG after change is to reach fluid reservoir ontology supercharging effect；Control unit is transmitted by pressure sensor
The variation of pressure condition in signal detection fluid reservoir ontology, when state reaches predetermined state in tank, control unit disconnects electricity automatically
Source maintains pressure at this time；Using preceding standing a period of time, until pressure is stablized, after liquid phase layering, i.e., openable liquid in-out
Valve goes out pressurized LNG stream, carry out using；
When required pressure is larger, the power of thermal resistance piece is tuned up by control unit, accelerates rate of pressurization, close to required pressure
When then automatically reduce thermal resistance piece power, so that pressure is slowly pressurized to setting pressure, this moment control unit auto power off.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525809.9A CN110220108A (en) | 2019-06-18 | 2019-06-18 | A kind of LNG is from pressurized tanks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910525809.9A CN110220108A (en) | 2019-06-18 | 2019-06-18 | A kind of LNG is from pressurized tanks |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524477A (en) * | 2020-12-03 | 2021-03-19 | 南京理工大学 | Safe type combustible gas is from pressure boost container and temperature regulation circulation all-in-one thereof |
| CN112610881A (en) * | 2020-11-29 | 2021-04-06 | 沪东重机有限公司 | Pressure-adjustable vaporizer and pressure adjusting method |
| CN114198639A (en) * | 2021-11-26 | 2022-03-18 | 南通恒信达冷冻设备有限公司 | Automatic invariable system of ultra-low temperature liquid basin pressure |
| US11493378B2 (en) | 2020-09-22 | 2022-11-08 | Caterpillar Inc. | Fuel level measurement system for a machine |
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| CN208397687U (en) * | 2017-12-01 | 2019-01-18 | 中国人民解放军63653部队 | Using the pressurization liquid nitrogen filling apparatus certainly of auxiliary heat pressurization |
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Application publication date: 20190910 |