CN109282983A - A kind of cryogenic insulated cylinder heat-insulating property test macro - Google Patents
A kind of cryogenic insulated cylinder heat-insulating property test macro Download PDFInfo
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- CN109282983A CN109282983A CN201811489815.5A CN201811489815A CN109282983A CN 109282983 A CN109282983 A CN 109282983A CN 201811489815 A CN201811489815 A CN 201811489815A CN 109282983 A CN109282983 A CN 109282983A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- 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
- F17C13/04—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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0388—Arrangement of valves, regulators, filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of cryogenic insulated cylinder heat-insulating property test macros, including a square frame, first support bar and second support bar are respectively and fixedly provided on the inside of the framework of the left and right sides of square frame, first crossbar and second crossbar are provided between two second support bars, third cross bar is provided between two first support bars, second crossbar bottom is provided with a control box, the first triple valve is provided in first crossbar, the first end of first triple valve is connected with an air inlet pipe, the second end of first triple valve is connected with one second triple valve, second triple valve is connected separately with pressure sensor and the first solenoid valve, first solenoid valve is connect with second solenoid valve and third solenoid valve respectively through pipeline, pressure regulator valve and flowmeter are provided on third cross bar, third solenoid valve is connected through one end of pipeline and pressure regulator valve, the other end of pressure regulator valve is connected with one Third triple valve, third triple valve are connect with second solenoid valve and flowmeter respectively；The testing efficiency of heat-insulating property can be effectively improved.
Description
Technical field
The present invention relates to special equipment technical field, especially a kind of cryogenic insulated cylinder heat-insulating property test macro.
Background technique
It is the cryogenic liquids such as liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas (LNG) that cryogenic insulated cylinder, which is suitable for containing medium,
Design temperature is not less than -196 DEG C, uses in the case where Normal Environmental Temperature is (- 40~60) DEG C, and nominal volume is more than or equal to 10L, public
Operating pressure is referred to as (0.2~3.5) MPa, and the repeatable welded insulated gas cylinder filled and Vehicular liquefied natural gas insulated gas cylinder are all
It needs to carry out periodic inspection.The periodic inspection period of low temperature cylinder should meet the requirement of national gas cylinder safely technical specification.When low
Wet bottle is seriously damaged in use, or when to its heat-insulating property or security performance with suspicion, should be examined in advance
It tests.The period of existing cryogenic insulated cylinder heat-insulating property test is long, after being deflated, be inflated to gas cylinder, being detected, then
It deflates, inflates；The process of this cryogenic insulated cylinder test at least needs 72 hours, and working efficiency is very low.
Summary of the invention
In order to overcome the problems referred above, the object of the present invention is to provide a kind of cryogenic insulated cylinder heat-insulating property test macro, have
Effect improves the testing efficiency of heat-insulating property.
The present invention is realized using following scheme: a kind of cryogenic insulated cylinder heat-insulating property test macro, including a square box
Frame, is respectively and fixedly provided with first support bar and second support bar on the inside of the framework of the left and right sides of the square frame, and two first
Square frame is separated into the first space, second space and third space, institute by strut and two second support bars from top to bottom
It states and is provided with first crossbar and second crossbar between two second support bars, and first crossbar and second crossbar are located at two
The head end and tail end of second support bar are provided with third cross bar between described two first support bars, and third cross bar is located at two
The centre of a first support bar, the first crossbar, third cross bar, second crossbar form three horizontally-arranged cloth in square frame；Institute
It states second crossbar bottom and is provided with a control box, the control box is located in third space, and band MCU is provided in the control box
Circuit board, be provided with the first triple valve in the first crossbar, the first end of first triple valve is connected with an air inlet pipe,
The second end of first triple valve is connected with one second triple valve, and second triple valve is connected separately with a pressure sensor
With one first solenoid valve, first solenoid valve is connect with second solenoid valve and third solenoid valve respectively through pipeline, and described first
Solenoid valve, second solenoid valve, third solenoid valve are located in second space, are provided with pressure regulator valve and flow on the third cross bar
Meter, the third solenoid valve are connect through pipeline with one end of the pressure regulator valve, and the other end of the pressure regulator valve is connected with a third
Triple valve, the third triple valve are connect with the second solenoid valve and flowmeter respectively, and the flowmeter is connected with an exhaust
Pipe, strung alongside has the first bursting tube and the second bursting tube between described two first support bars, first bursting tube and the
The first safety valve and is respectively set close to the third cross bar, first bursting tube and the second bursting tube tail end in two bursting tubes
Two safety valves, the third end of first triple valve are connect with first bursting tube and the second bursting tube respectively；The pressure regulation
Valve, flowmeter, the first safety valve, the second safety valve are located in the first space, and a display is provided at the top of the square frame
Screen, the display screen, pressure sensor, the first triple valve, the second triple valve, third triple valve, pressure regulator valve, flowmeter with electricity
MCU connection on the plate of road.
Further, the bottom surrounding of the square frame is provided with a universal wheel.
Further, the front framework lower right corner of the square frame is fixed with the first fan, after the square frame
The box body upper left corner is fixed with one second fan, and first fan is located at third spatially, and second fan is located at first
Spatially.
Further, the square frame top, lower section, left side, right side, front, rear are provided with sealing plate, described
Air inlet pipe, exhaust pipe, the first bursting tube, the second bursting tube both pass through sealing plate.
Further, handle is provided on the sealing plate of the square frame left and right side.
Further, including pressure-bearing detection pattern and normal pressure detection pattern；
The pressure-bearing detection pattern is: the third solenoid valve being opened, second solenoid valve is closed, and gas passes through pipeline stream
Enter onto pressure regulator valve, be adjusted by pressure of the pressure regulator valve to gas, test pressure control is led in 0.4~0.8Mpa gas
It crosses third triple valve to enter in flowmeter, flowmeter carries out flow to gas and tests；It, will be every one after exhaust 4 hours
The difference DELTA L of instantaneous flow value L ' and first 4 hours instantaneous flow value L of the acquisition time point are obtained within a hour, Δ L/L is carried out
It calculates, if continuous two hours, Δ L/L was less than 20%；The cumulative flow magnitude then obtained using last time is initial value, and 8 hours
The value obtained afterwards is final value, passes through formula:Calculate the test evaporation rate α of this time0It is denoted as α1；Wherein qm
For boil-off gas mass flow daily mean, unit is kilogram daily；Given value for the correction system of flowmeter, when calibration；
ρ1For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is effective appearance of detected pieces
Product, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i be natural number, and with the preceding α once calculated0
It is compared, ifNo more than 5%, then takeAs detection final value；IfGreater than 5%, then
After the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；It will test final value and evaluation marked
Quasi- value is compared, and judges whether the cryogenic insulated cylinder is qualified；
The normal pressure detection pattern is: third solenoid valve being closed, second solenoid valve is opened, then gas passes through the second electromagnetism
Valve enters in flowmeter by third triple valve, and flowmeter carries out flow to gas and tests；It, will be every after exhaust 4 hours
The difference DELTA L of instantaneous cumulative flow magnitude L ' and first 4 hours cumulative flow magnitude L of the acquisition time point are obtained every a hour,
Δ L/L calculating is carried out, if continuous two hours, Δ L/L was less than 20%；It is then first with the cumulative flow magnitude that last time obtains
Initial value, the value obtained after 8 hours are final value, pass through formula:Calculate the test evaporation rate α of this time0Note
For α1；Wherein qmFor boil-off gas mass flow daily mean, unit is kilogram daily；For the correction system of flowmeter, calibration
When given value；ρ1For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is quilt
The dischargeable capacity of part is examined, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i be natural number, and with it is preceding
The α once calculated0It is compared, ifNo more than 5%, then takeAs detection final value；If
Greater than 5%, then after the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；It will test end
Value is compared with evaluation criteria value, judges whether the cryogenic insulated cylinder is qualified.
Further, the pressure-bearing detection and normal pressure detection are suitable for LN2It is situated between with different mediums, storages such as LNG, LO, LAr
The reduction formula of matter static evaporation rate:
In formula:
asFor the static evaporation rate of physical holding of the stock medium, unit %/d；
atFor the static evaporation rate of test medium, unit %/d；
TcosThe saturation temperature of physical holding of the stock medium, unit K are depressed for normal atmosphere；
TcotThe saturation temperature of test medium, unit K are depressed for normal atmosphere；
hGotThe steam specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hLotThe liquid specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hGosThe steam specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
hLosThe liquid specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
FtFor the maximum filling weight of test medium, unit Kg；
Fs is the maximum filling weight of physical holding of the stock medium, unit Kg.
The beneficial effects of the present invention are: the present invention is provided with square frame, and the square frame is by first support bar, second
Support rod, first crossbar, third cross bar, second crossbar are divided into three vertical three horizontal structures, and the part in such test macro carries out
Distribution is distinguished, so that it is safer when device is tested, since Cryo Heat Insulation gas can be at liquid when low temperature
The process of state form, test can also liquid drip, and therefore, the setting of control box in third space and is located in the first cross, in this way
Circuit board in control box will not be dripped to by liquid, ensure that the safety of device, in addition, being provided with the first safety in this patent
Valve and the second safety valve when the air pressure in signal piping is greater than 1.0MP, can pass through the first safety valve and the second safety
Valve releasing pressure automatically, improves safety.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is that the present invention removes the schematic diagram of internal structure after sealing plate.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
It please refers to shown in Fig. 1 and Fig. 2, the present invention provides a kind of cryogenic insulated cylinder heat-insulating property test macros, including
One square frame 1 is respectively and fixedly provided with first support bar 12 and the second support on the inside of the framework 11 of the left and right sides of the square frame 1
Square frame 1 is separated into the first space 14, by bar 13, two first support bars 12 and two second support bars 13 from top to bottom
Two spaces 15 and third space 16 are provided with first crossbar 17 and second crossbar 18 between described two second support bars 13,
And first crossbar 17 and second crossbar 18 are located at the head end and tail end of two second support bars 13, described two first supports
Third cross bar 19 is provided between bar 12, and third cross bar 19 is located at the centre of two first support bars 12, the first crossbar
17, third cross bar 19, second crossbar 18 form three horizontally-arranged cloth in square frame 1；Square frame 1 is by first support bar in this way
12, second support bar 13, first crossbar 17, third cross bar 19, second crossbar 18 are divided for three vertical three horizontal structures；Described second is horizontal
18 bottom of bar is provided with a control box 2, and the control box 2 is located in third space 16, and band MCU is provided in the control box 2
Circuit board, be provided with the first triple valve 3 in the first crossbar 17, the first end of first triple valve 3 be connected with one into
Tracheae 31, the second end of first triple valve 3 are connected with one second triple valve 4, and second triple valve 4 is connected separately with one
Pressure sensor 5 and one first solenoid valve 6, first solenoid valve 6 through pipeline 61 respectively with second solenoid valve 7 and third electromagnetism
Valve 8 connects, and first solenoid valve 6, second solenoid valve 7, third solenoid valve 8 are located in second space 15, the third cross bar
Pressure regulator valve 9 and flowmeter 10 are provided on 17, the third solenoid valve 8 is connect through pipeline 61 with one end of the pressure regulator valve 9, institute
The other end for stating pressure regulator valve 9 is connected with a third triple valve 91, the third triple valve 91 respectively with the second solenoid valve 7 and
Flowmeter 10 connects, and the flowmeter 10 is connected with an exhaust pipe 21, there is strung alongside between described two first support bars 12
First bursting tube 22 and the second bursting tube 23, first bursting tube 22 and the second bursting tube 23 close to the third cross bar 17,
First bursting tube 22 and 23 tail end of the second bursting tube are respectively set the first safety valve 24 and the second safety valve 25, and described first
The third end of triple valve 3 is connect with first bursting tube 22 and the second bursting tube 23 respectively；The pressure regulator valve 9, flowmeter 10,
First safety valve 24, the second safety valve 25 are located in the first space, and the top of the square frame 1 is provided with a display screen 26,
The display screen 26, pressure sensor 5, the first triple valve 3, the second triple valve 4, third triple valve 91, pressure regulator valve 9, flowmeter
10 connect with the MCU on circuit board.Wherein the first solenoid valve, second solenoid valve, third solenoid valve are explosion-proof solenoid valve, and anti-
The model of quick-fried solenoid valve are as follows: EF8320G174.The MCU is 51 series monolithics.Pressure regulator valve is SDR series voltage regulation valve.Pressure passes
Sensor is PT124G series pressure sensor.Wherein, the safe atmospheric pressure value of the first safety valve setting is 1.0MP, the second safety valve
The safe atmospheric pressure value of 25 settings is 1.03MP, when the air pressure in this way in signal piping is greater than 1.0MP, can pass through first
Safety valve and the second safety valve releasing pressure automatically, improve safety.
In order to enable the movement that test macro energy is more convenient, the bottom surrounding of the square frame 1 are provided with 10,000
To wheel 27.By pushing universal wheel test macro to can be carried out random walking.
The front framework lower right corner of the square frame is fixed with the first fan 28, and the rear framework of the square frame is left
Upper angle is fixed with one second fan 29, and first fan is located at third spatially, and second fan is located at first spatially.
If gases to be measured some in this way sink to the lower section of device, gas is up blown by the first fan, to pass through second
Fan blows out gas toward square frame outside.
In addition, the square frame top, lower section, left side, right side, front, rear are provided with sealing plate 32, it is described into
Tracheae, exhaust pipe, the first bursting tube, the second bursting tube both pass through sealing plate.Sealing plate can guarantee the portion in square frame in this way
Part is not easy to damage.
Handle 33 is provided on the sealing plate of the square frame left and right side.This sampling device integrally can be carried out to lift and remove
Fortune, convenient for users to operation.
The operation principle of the present invention is that: the gas outlet of cryogenic insulated cylinder is linked into air inlet pipe 31, such low temperature is exhausted
The gas of hot gas bottle can enter the first triple valve 3, the second triple valve 4, and the first solenoid valve is in off state at this time, passes through pressure
The air pressure of sensor test gas is to meet detection air pressure, if being more than atmospheric pressure value, gas is passed through to the third of the first triple valve 3
End is flowed into the first bursting tube 22 and the second bursting tube 23 is discharged, if being not above atmospheric pressure value, opens the first solenoid valve,
Gas is flowed into second solenoid valve 7 and third solenoid valve 8 by pipeline 61 at this time, control in box MCU judgement at this time gas be into
The detection of row pressure-bearing or normal pressure detection, if test is normal pressure detection, third solenoid valve 8 is closed, and second solenoid valve 7 is opened,
Then gas is entered in flowmeter 10 by second solenoid valve 7 by third triple valve 91, and flowmeter 10 carries out flow to gas
It is tested, is discharged after obtaining data by exhaust pipe；If test is pressure-bearing detection, third solenoid valve 8 is opened, the
Two solenoid valves 7 are closed, and gas is flowed on pressure regulator valve by pipeline, is adjusted by pressure of the pressure regulator valve to gas, are adjusted
To after the pressure of carrying, gas is entered in flowmeter 10 by third triple valve 91, flowmeter 10 to gas carry out flow into
Row test, is discharged after obtaining data by exhaust pipe.
In specific the present embodiment, which has pressure-bearing detection pattern and normal pressure detection pattern；
The pressure-bearing detection pattern is: the third solenoid valve being opened, second solenoid valve is closed, and gas passes through pipeline stream
Enter onto pressure regulator valve, be adjusted by pressure of the pressure regulator valve to gas, test pressure control is led in 0.4~0.8Mpa gas
It crosses third triple valve to enter in flowmeter, flowmeter carries out flow to gas and tests；It, will be every one after exhaust 4 hours
The difference DELTA L of instantaneous cumulative flow magnitude L ' and first 4 hours cumulative flow magnitude L of the acquisition time point are obtained within a hour, is carried out
Δ L/L is calculated, if continuous two hours, Δ L/L was less than 20%；Then using the cumulative flow magnitude of last time acquisition as initial value,
The value obtained after 8 hours is final value, passes through formula:Calculate the test evaporation rate α of this time0It is denoted as α1；
Wherein qmFor boil-off gas mass flow daily mean, unit is kilogram daily；For the correction system of flowmeter, when calibration
Given value；ρ1For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is detected pieces
Dischargeable capacity, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i is natural number, and with it is preceding primary
The α of calculating0It is compared, ifNo more than 5%, then takeAs detection final value；IfIt is greater than
5%, then after the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；Will test final value with
Evaluation criteria value is compared, and judges whether the cryogenic insulated cylinder is qualified；
The normal pressure detection pattern is: third solenoid valve being closed, second solenoid valve is opened, then gas passes through the second electromagnetism
Valve enters in flowmeter by third triple valve, and flowmeter carries out flow to gas and tests；It, will be every after exhaust 4 hours
The difference DELTA L of instantaneous cumulative flow magnitude L ' and first 4 hours cumulative flow magnitude L of the acquisition time point are obtained every a hour,
Δ L/L calculating is carried out, if continuous two hours, Δ L/L was less than 20%；It is then first with the cumulative flow magnitude that last time obtains
Initial value, the value obtained after 8 hours are final value, pass through formula:Calculate the test evaporation rate α of this time0Note
For α1；Wherein qmFor boil-off gas mass flow daily mean, unit is kilogram daily；For the correction system of flowmeter, calibration
When given value；ρ1For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is quilt
The dischargeable capacity of part is examined, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i be natural number, and with it is preceding
The α once calculated0It is compared, ifNo more than 5%, then takeAs detection final value；IfGreater than 5%, then after the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；
It will test final value to be compared with evaluation criteria value, judge whether the cryogenic insulated cylinder is qualified.
Further, the pressure-bearing detection and normal pressure detection are suitable for LN2, the different mediums such as LNG, LO and LAr, storage is situated between
The reduction formula of matter static evaporation rate:
In formula:
asFor the static evaporation rate of physical holding of the stock medium, unit %/d；
atFor the static evaporation rate of test medium, unit %/d；
TcosThe saturation temperature of physical holding of the stock medium, unit K are depressed for normal atmosphere；
TcotThe saturation temperature of test medium, unit K are depressed for normal atmosphere；
hGotThe steam specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hLotThe liquid specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hGosThe steam specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
hLosThe liquid specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
FtFor the maximum filling weight of test medium, unit Kg；
Fs is the maximum filling weight of physical holding of the stock medium, unit Kg.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (8)
1. a kind of cryogenic insulated cylinder heat-insulating property test macro, it is characterised in that: including a square frame, the square frame
The left and right sides framework on the inside of be respectively and fixedly provided with first support bar and second support bar, two first support bars and two second
Square frame is separated into the first space, second space and third space, described two second support bars by strut from top to bottom
Between be provided with first crossbar and second crossbar, and first crossbar and second crossbar are located at the head end of two second support bars
And tail end, third cross bar is provided between described two first support bars, and third cross bar is located in two first support bars
Between, the first crossbar, third cross bar, second crossbar form three horizontally-arranged cloth in square frame；The second crossbar bottom is set
It is equipped with a control box, the control box is located in third space, it is provided with the circuit board with MCU in the control box, described
The first triple valve is provided on one cross bar, the first end of first triple valve is connected with an air inlet pipe, first triple valve
Second end be connected with one second triple valve, second triple valve is connected separately with a pressure sensor and one first electromagnetism
Valve, first solenoid valve are connect with second solenoid valve and third solenoid valve respectively through pipeline, first solenoid valve, the second electricity
Magnet valve, third solenoid valve are located in second space, and pressure regulator valve and flowmeter, the third electromagnetism are provided on the third cross bar
Valve is connect through pipeline with one end of the pressure regulator valve, and the other end of the pressure regulator valve is connected with a third triple valve, the third
Triple valve is connect with the second solenoid valve and flowmeter respectively, and the flowmeter is connected with an exhaust pipe, and described two first
Strung alongside has the first bursting tube and the second bursting tube between support rod, and first bursting tube and the second bursting tube are close to described
Third cross bar, first bursting tube and the second bursting tube tail end are respectively set the first safety valve and the second safety valve, and described
The third end of one triple valve is connect with first bursting tube and the second bursting tube respectively；The pressure regulator valve, flowmeter, the first peace
Full valve, the second safety valve are located in the first space, and a display screen, the display screen, pressure are provided at the top of the square frame
Force snesor, the first triple valve, the second triple valve, third triple valve, pressure regulator valve, flowmeter are connect with the MCU on circuit board.
2. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: described rectangular
The bottom surrounding of frame is provided with a universal wheel.
3. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: described rectangular
The front framework lower right corner of frame is fixed with the first fan, and the rear framework upper left corner of the square frame is fixed with one second wind
Fan, first fan are located at third spatially, and second fan is located at first spatially.
4. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: described rectangular
Frame top, lower section, left side, right side, front, rear are provided with sealing plate, the air inlet pipe, exhaust pipe, the first bursting tube,
Second bursting tube both passes through sealing plate.
5. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: described rectangular
Handle is provided on the sealing plate on frame left and right side.
6. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: described rectangular
The rear framework lower right corner of frame is fixed with a Temperature Humidity Sensor.
7. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 1, it is characterised in that: including pressure-bearing
Detection pattern and normal pressure detection pattern；
The pressure-bearing detection pattern is: the third solenoid valve being opened, second solenoid valve is closed, and gas is flowed by pipeline
It on pressure regulator valve, is adjusted by pressure of the pressure regulator valve to gas, the control of test pressure in 0.4~0.8Mpa gas is passed through the
Three triple valves enter in flowmeter, and flowmeter carries out flow to gas and tests；It, will be small every one after exhaust 4 hours
When obtain instantaneous flow value L ' and the acquisition time point first 4 hours instantaneous flow value L difference DELTA L, carry out Δ L/L meter
It calculates, if continuous two hours, Δ L/L was less than 20%；The cumulative flow magnitude then obtained using last time is initial value, after 8 hours
The value of acquisition is final value, passes through formula:Calculate the test evaporation rate α of this time0It is denoted as α1；Wherein qmFor
Boil-off gas mass flow daily mean, unit be kilogram daily；Given value for the correction system of flowmeter, when calibration；ρ1
For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is effective appearance of detected pieces
Product, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i be natural number, and with the preceding α once calculated0
It is compared, ifNo more than 5%, then takeAs detection final value；IfGreater than 5%, then
After the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；It will test final value and evaluation marked
Quasi- value is compared, and judges whether the cryogenic insulated cylinder is qualified；
The normal pressure detection pattern is: third solenoid valve being closed, second solenoid valve is opened, then gas is passed through by second solenoid valve
It crosses third triple valve to enter in flowmeter, flowmeter carries out flow to gas and tests；It, will be every one after exhaust 4 hours
The difference DELTA L of instantaneous flow value L ' and first 4 hours instantaneous flow value L of the acquisition time point are obtained within a hour, Δ L/L is carried out
It calculates, if continuous two hours, Δ L/L was less than 20%；The cumulative flow magnitude then obtained using last time is initial value, and 8 hours
The value obtained afterwards is final value, passes through formula:Calculate the test evaporation rate α of this time0It is denoted as α1；Wherein qm
For boil-off gas mass flow daily mean, unit is kilogram daily；It is given when calibration for the correction system of flowmeter
Value；ρ1For the density of saturated liquid under standard atmospheric pressure 101.325kPa, unit is kilogram every cubic metre；V is having for detected pieces
Volume is imitated, unit is cubic meter；Later every the α of calculating in 8 hours0It is denoted as αi, wherein i be natural number, and with preceding primary calculating
α0It is compared, ifNo more than 5%, then takeAs detection final value；IfIt is greater than
5%, then after the α of calculating in 8 hours0, and take the α finally calculated twice0Average value is as detection final value；Will test final value with
Evaluation criteria value is compared, and judges whether the cryogenic insulated cylinder is qualified.
8. a kind of cryogenic insulated cylinder heat-insulating property test macro according to claim 7, it is characterised in that: the pressure-bearing
Detection and normal pressure detection are suitable for LN2With the different mediums such as LNG, LO, LAr, the reduction formula of storage medium static evaporation rate:
In formula:
asFor the static evaporation rate of physical holding of the stock medium, unit %/d；
At is the static evaporation rate of test medium, unit %/d；
TcosThe saturation temperature of physical holding of the stock medium, unit K are depressed for normal atmosphere；
TcotThe saturation temperature of test medium, unit K are depressed for normal atmosphere；
hGotThe steam specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hLotThe liquid specific enthalpy of test medium, unit KJ/Kg are depressed for normal atmosphere；
hGosThe steam specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
hLosThe liquid specific enthalpy of storage medium, unit KJ/Kg are depressed for normal atmosphere；
FtFor the maximum filling weight of test medium, unit Kg；
Fs is the maximum filling weight of physical holding of the stock medium, unit Kg.
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