CN106970107A - A kind of cryogenic delivery pipe road Performance Test System - Google Patents
A kind of cryogenic delivery pipe road Performance Test System Download PDFInfo
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- CN106970107A CN106970107A CN201610022188.9A CN201610022188A CN106970107A CN 106970107 A CN106970107 A CN 106970107A CN 201610022188 A CN201610022188 A CN 201610022188A CN 106970107 A CN106970107 A CN 106970107A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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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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- 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
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Abstract
The invention discloses a kind of cryogenic delivery pipe road Performance Test System, including the first compensation pipe, the second compensation pipe and testing tube, one outer tube, filling multilayer heat-insulating material between the outer tube and the first compensation pipe, the second compensation pipe and testing tube are set respectively outside the first compensation pipe, the second compensation pipe and testing tube；Provided with test filler pipe, compensation filler pipe and compensation blast pipe in the first compensation pipe, compensation filler pipe also is provided with the second compensation pipe and compensates blast pipe, test blast pipe is additionally provided with the second compensation pipe, cryogenic delivery pipe road Performance Test System also includes a main controller.Technical scheme carries out leakage thermal compensation using the compensator section pipeline at two ends, it is ensured that the test performance of test pipeline, effectively increases the measuring accuracy to the performance test of cryogenic delivery pipe road.
Description
Technical field
The present invention relates to pipeline Performance Test System, more particularly to a kind of cryogenic delivery pipe road Performance Test System.
Background technology
In current engineer applied field, many fields are directed to the application of cryogenic liquid, cryogenic liquid bag
Include：Liquid helium, liquid hydrogen, liquid oxygen, liquid nitrogen etc..It is widely used in production and scientific research, generally, is
Transporting low temperature liquid gas, the conveying of cryogenic liquid is carried out frequently with low-temperature storage tank and cryogenic delivery pipe road,
More reasonable using pipeline when being connected under two equipment sealed environments, the design of cryogenic delivery pipe road is former
It is exactly then under conditions of loss of refrigeration capacity as small as possible, the pressure loss, cryogenic fluid to be transported to each and set
In standby.
In the course of conveying of cryogenic fluid, for cryogenic pipe, various adiabatic methods can be used, mainly
Including：Common accumulation is adiabatic, vacuum powder and fiber insulation, high-vacuum insulation, vacuum multi-layer insulation etc.；
Wherein vacuum multi-layer insulation is most efficient adiabatic method, main using many radiation with high reflectance
The alternating layer shielded with the sept with lower thermal conductivity is constituted, and vacuum interlayer, which is vacuumized, need to be less than Pa negative pressure
State, vacuum multi-layer insulation is widely applied to cryogenic technique field, is directed to more low-temperature space, and smaller is cold
The demand of damage has highly important actual use value.
At present, the performance test for the cryogenic delivery pipe road of vacuum multi-layer insulation is to weigh cryogenic delivery pipe road
A kind of capability-mode, in existing Performance Test System when the leaking heat on cryogenic delivery pipe road is tested,
The heat waste amount of infusion pipeline end is not considered, hence in so that final data measured precision is present than larger
Error.Moreover, the performance test to a variety of heat-insulating materials can not be realized for multilayer heat insulation cryogenic delivery pipe road.
The content of the invention
Therefore, it is contemplated that at least solve the problem of above-mentioned vacuum multi-layer insulation cryogenic delivery pipe road is present it
One, propose a kind of energy high-precision cryogenic delivery pipe road Performance Test System.
In order to solve the above technical problems, the technical scheme is that：
The present invention provides a kind of cryogenic delivery pipe road Performance Test System, including：
The first compensation pipe, the second compensation pipe and testing tube for storing cryogenic media, described testing tube one end
It is connected with described first compensation pipe one end, the testing tube other end is connected with described second compensation pipe one end,
The other end at the two ends of testing tube, the other end of the first compensation pipe and the second compensation pipe sets a dividing plate respectively；
An outer tube is set respectively outside the first compensation pipe, the second compensation pipe and testing tube, it is described outer
Filling multilayer heat-insulating material between sleeve pipe and the first compensation pipe, the second compensation pipe and testing tube；
Provided with test filler pipe, compensation filler pipe and compensation blast pipe, the compensation in the first compensation pipe
Filler pipe and compensation blast pipe pass the dividing plate that the first step compensates tube end, compensate filler pipe is passed one
End is connected by first switch valve with a cryogenic media storage source, compensates one end for passing of blast pipe by the
Three switch valves and atmosphere；One end of the test filler pipe pass first step compensation tube end every
Plate is simultaneously connected by second switch valve with the cryogenic media storage source, and the other end passes through testing tube one end
Dividing plate is connected with the testing tube；
Compensation filler pipe also is provided with the second compensation pipe and compensates blast pipe, compensation filler pipe and compensation row
Tracheae passes the dividing plate that second step compensates tube end, one end for passing of compensation filler pipe by the 5th switch valve with
The cryogenic media storage source is connected, and one end that compensation blast pipe is passed is connected by the 4th switch valve and air
It is logical；
Test blast pipe is additionally provided with the second compensation pipe, described test blast pipe one end passes the second compensation
The dividing plate of pipe is simultaneously connected with a rewarming heat exchanger, pressure gauge, thermometer and flowmeter, the test row
The dividing plate of the other end of tracheae through the testing tube other end is connected with the testing tube；Flowmeter is used to test
The leakage flow of cryogenic media, thermometer is used for sensed flow meter entrance cryogenic media temperature, and pressure gauge is used for
Sensed flow meter entrance cryogenic media pressure, rewarming heat exchanger is used for the cryogenic gas to test blast pipe discharge
Carry out rewarming；
One end of the test blast pipe second compensation pipe dividing plate is led to by the 6th switch valve and atmosphere
Cross the 7th switch valve with the rewarming heat exchanger to be connected, the side of the flowmeter discharge cryogenic gas passes through
Tenth switch valve and atmosphere；
Cryogenic delivery pipe road Performance Test System also include a main controller respectively with the pressure gauge, temperature
Degree meter, flowmeter, first switch valve, second switch valve, the 3rd switch valve, the 4th switch valve, the 5th open
Valve, the 6th switch valve, the 7th switch valve, the tenth switch valve is closed to electrically connect, main controller control first switch valve,
Second switch valve, the 3rd switch valve, the 4th switch valve, the 5th switch valve, the 6th switch valve, the 7th switch
Valve and the tenth switch valve are opened or closed, and are controlled the pressure gauge, thermometer and flowmeter and received pressure
The signal of power meter, thermometer and flowmeter feedback, according to the evaporation rate of the signal of change cryogenic media of feedback and
Leaking heat.
It is further preferred that being additionally provided with temperature interface, the testing tube on the outer tube of the second compensation pipe
Temperature sensor is posted on the outer surface of corresponding multilayer insulant, the lead of the temperature sensor passes through
Temperature interface is drawn and is connected with the main controller.
It is further preferred that on the inside of the outer tube of temperature interface one end connection the second compensation pipe, temperature
The interface other end one mounting seat of formation is spent, and is disposed with mounting seat first from inside to outside
Cover plate, the second cover plate and the 3rd cover plate, between the mounting seat and the first cover plate, the first cover plate and second
Sealed respectively using fluorine cushion rubber between cover plate and between the second cover plate and the 3rd cover plate, the temperature is passed
The lead of sensor is drawn from the fluorine cushion rubber middle punch to be connected with the main controller.
It is further preferred that being provided with multiple supports, the support between the corresponding outer tube of testing tube
Also be provided with temperature sensor on outer surface, the lead of temperature sensor drawn from the fluorine cushion rubber middle punch and with
The main controller is connected.
It is further preferred that corresponding outer tube is removably socketed in the testing tube outside the testing tube
On.
It is further preferred that the internal diameter of corresponding outer tube is respectively greater than first benefit outside the testing tube
Repay the internal diameter of the corresponding outer tube of pipe and the second corresponding outer tube of compensation pipe, the corresponding overcoat of the testing tube
Tube end is provided with two public law orchids, and corresponding outer tube is managed in first compensation and the second compensation pipe is corresponding outer
Mother law is respectively equipped with sleeve pipe blue, public law is blue to be fixedly connected with mother law orchid using bolt, and public law is blue blue with mother law
Between be provided with sealing ring.
It is further preferred that the corresponding multilayer insulant of the testing tube it is replaceable be arranged on the test
Between pipe outer tube corresponding with the testing tube.
It is further preferred that the export pipeline of the rewarming heat exchanger also passes through the 8th switch valve of concatenation and
Nine switch valves and atmosphere.
It is further preferred that the other end of the test blast pipe passes through and is arranged on testing tube exhaust side dividing plate
Top be connected with the testing tube.
It is further preferred that it is described support be triangular support or star strut, the testing tube with it is corresponding
The liquid nitrogen radiation shield for being socketed in testing tube periphery is additionally provided between outer tube, the liquid nitrogen radiation shield passes through liquid nitrogen
Precooling pipeline is cooled down.
The cryogenic delivery pipe road Performance Test System of the embodiment of the present invention, the first benefit is installed additional at test pipeline two ends
The scheme of pipe and the second compensation pipe is repaid, leakage thermal compensation is carried out using the compensator section pipeline at two ends, it is ensured that testing tube
The test performance on road, effectively increases the measuring accuracy to the performance test of cryogenic delivery pipe road.
Brief description of the drawings
In order that present disclosure is readily apparent understood, below according to the specific embodiment of the present invention
And with reference to accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structure composition schematic diagram of the cryogenic delivery pipe road Performance Test System of an embodiment of the present invention；
Fig. 2 is a kind of schematic cross-section of embodiment of present invention test pipeline；
Fig. 3 is the schematic cross-section of another embodiment of present invention test pipeline；
Fig. 4 is the flange arrangement schematic diagram of present invention outer tube one end corresponding with testing tube；
Fig. 5 is the flange arrangement schematic diagram of the present invention outer tube other end corresponding with testing tube；
Fig. 6 is the structural representation of temperature interface in the Performance Test System of cryogenic delivery pipe road of the present invention.
Reference is expressed as in figure：1- testing tubes；The compensation pipes of 2- first；The compensation pipes of 3- second；4- testing tubes
Outer tube；5- flanges I；6- flanges II；7- tests filler pipe；8- tests blast pipe；9- compensates filler pipe；
10- compensates blast pipe；11- air inlet dividing plates；12- exhaust outlet dividing plates；13- is supported；14- temperature interfaces；15-
Rewarming heat exchanger；16- pressure gauges；17- thermometers；18- flowmeters；001- first switch valves；002- second is opened
Close valve；The switch valves of 003- the 3rd；The switch valves of 004- the 4th；The switch valves of 005- the 5th；The switch valves of 006- the 6th；
The switch valves of 007- the 7th；The switch valves of 008- the 8th；The switch valves of 009- the 9th；The switch valves of 010- the tenth；19- multilayers
Heat-insulating material；22- liquid nitrogen radiation shields；23- Liquid nitrogen precooler pipes；The public laws of 26- first are blue；The mother laws of 27- first are blue；
30- rubber rings；The public laws of 29- second are blue；The mother laws of 28- second are blue；34- mounting seats；The cover plates of 33- first；32-
Second cover plate；The cover plates of 31- the 3rd；35th, 36,37- fluorine cushion rubbers.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, with
Lower combination drawings and Examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment only to explain the present invention, be not intended to limit the present invention.
As shown in figure 1, embodiments of the invention provide a kind of cryogenic delivery pipe road Performance Test System, including：
The first compensation pipe 2, second compensation pipe 3 and testing tube 2 for storing cryogenic media, the testing tube
2 one end are connected with described first compensation pipe 2 one end, the other end of testing tube 2 and the described second compensation pipe 3
One end is connected, and the two ends of testing tube 2, the other end of the first compensation pipe 2 and second compensate the another of pipe 3
End sets a dividing plate (11,12) respectively；
An outer tube 4 is set respectively outside first compensation pipe 2, the second compensation pipe 3 and testing tube 1,
Filling multilayer is adiabatic between the outer tube 4 and the first compensation pipe 2, second compensation pipe 3 and testing tube 1
Material 19；
Provided with test filler pipe 7, compensation filler pipe 9 and compensation blast pipe 10 in the first compensation pipe 2,
The compensation filler pipe 9 and compensation blast pipe 10 pass the dividing plate that the first step compensates tube end, and compensation adds
One end that note pipe 9 is passed is connected by first switch valve 001 with a cryogenic media storage source, compensation exhaust
One end that pipe 10 is passed passes through the 3rd switch valve 003 and atmosphere；Wear one end of the test filler pipe 7
Go out the dividing plate of first step compensation pipe 2 end and stored by second switch valve 002 and the cryogenic media
Source is connected, and the other end is connected through the air inlet dividing plate 11 of testing tube one end with the testing tube 1；
Compensation filler pipe 9 also is provided with the second compensation pipe 3 and blast pipe 10 is compensated, and compensates filler pipe 9
And compensation blast pipe 10 passes the dividing plate of second step compensation pipe 3 end, one end that compensation filler pipe 9 is passed leads to
Cross the 5th switch valve 005 with the cryogenic media storage source to be connected, one end that compensation blast pipe 10 is passed leads to
Cross the 4th switch valve 004 and atmosphere；
Test blast pipe 8 is additionally provided with the second compensation pipe 3, described test blast pipe 8 one end passes second
Compensate pipe 3 dividing plate and with a rewarming heat exchanger 15, pressure gauge 16, thermometer 17 and the phase of flowmeter 18
Connection, the exhaust outlet dividing plate 12 of the other end through the testing tube other end of the test blast pipe 8 is surveyed with described
Test tube 1 is connected；Flowmeter is used for the leakage flow for testing cryogenic media, and thermometer is used for sensed flow meter
Entrance cryogenic media temperature, pressure gauge is used for sensed flow meter entrance cryogenic media pressure, and rewarming heat exchanger is used
Rewarming is carried out in the cryogenic gas excluded to test blast pipe；
One end of the test blast pipe 8 through the second compensation pipe dividing plate passes through the 6th switch valve 006 and air
Connection, and be connected by the 7th switch valve 007 with the rewarming heat exchanger 15, the row of flowmeter 18
The side for going out cryogenic gas passes through the tenth switch valve 010 and atmosphere；
The cryogenic delivery pipe road system can test system also include a main controller respectively with the pressure gauge 16,
Thermometer 17, flowmeter 18, first switch valve 001, second switch valve 002, the 3rd switch valve 003,
Four switch valves 004, the 5th switch valve 005, the 6th switch valve 006, the 7th switch valve the 007, the tenth switch
Valve 010 is electrically connected, main controller control first switch valve 001, second switch valve 002, the 3rd switch valve 003,
4th switch valve 004, the 5th switch valve 005, the 6th switch valve 006, the 7th switch valve 007 and the tenth are opened
Opening or closing for valve 010 is closed, and controls the pressure gauge 16, thermometer 17 and flowmeter 18 to work simultaneously
The signal that pressure gauge 16, thermometer 17 and flowmeter 18 feed back is received, according to the signal of change low temperature of feedback
The evaporation rate and leaking heat of medium.
Technical scheme use vacuum multi-layer insulation mode cold insulation, testing tube 1, first compensate pipe 2,
The outer surface wrapping multilayer insulant of 3rd compensation pipe 3, such as all-glass paper and aluminium foil are composited,
Vacuumized between interior conduit and Outer Tube less than Pa.Pipeline section exhaust body is tested simultaneously using rewarming heat exchanger 15 to enter
Row rewarming, then by the measurement of pressure gauge 16 and thermometer 17, the gas of evaporation is entered by flowmeter 18
Row test, according to the mechanics equation of gas state so as to obtain the leaking heat of testing tube 1.Because two ends are using benefit
The influence of two ends leakage heat can not be considered by repaying the gas evaporation in pipe, testing tube 1.
Further, temperature interface 14, the testing tube are additionally provided with the outer tube of the second compensation pipe 3
Temperature sensor, the lead of the temperature sensor are posted on the outer surface of 1 corresponding multilayer insulant 19
Drawn and be connected with the main controller by temperature interface 14.
With reference to shown in Fig. 6, specifically, described one end of temperature interface 14 connection the second compensation pipe 3 is outer
On the inside of sleeve pipe, the other end of temperature interface 14 one mounting seat 34 of formation, and in mounting seat 34 by
The first cover plate 33, the second cover plate 32 and the 3rd cover plate 31, the mounting seat 34 are disposed with from inside to outside
Between the first cover plate 33, between the first cover plate 33 and the second cover plate 32 and the second cover plate 32 and the 3rd lid
Sealed respectively using fluorine cushion rubber (35,36,36) between plate 31, the lead of the temperature sensor
Draw and be connected with the main controller from the fluorine cushion rubber middle punch.It can be measured by the temperature sensor
The difference of the temperature of the outer surface of multi-layer insulation 19, test leaking heat and multilayer insulant hull-skin temperature
The performance that adiabatic layer material can be indicated is good and bad.Big when measuring leaking heat, heat insulation layer hull-skin temperature is low,
Then heat-insulating material poor-performing, vice versa.
Further, can be provided with multiple supports 13, institute between the corresponding outer tube 4 of the testing tube 1
State and also be provided with temperature sensor on 13 outer surfaces of support, the lead of temperature sensor is from the fluorine cushion rubber middle punch
Draw and be connected with the main controller.
Certainly, it can also be set between the outer tube of the first compensation compensation of pipe 2 and second pipe 3 corresponding thereto
Multiple supports are put, these support surfaces can be without setting temperature sensor.
Scheme of the present invention, tests pipeline leaking heat, so as to draw vacuum insulation according to flowmeter 18
Can quality, it is preferable that use a kind of dismountable flange arrangement, can will be corresponding with testing tube 1 outer
Sleeve pipe 4 carries out the dismounting of simplicity, is replaced heat-insulating material.
With reference to shown in Fig. 4 and Fig. 5, a kind of structure of dismountable flange, the main two ends of outer tube 4 welding
At two public law orchids 26,29, connecting pipe, i.e., first corresponding one end of the compensation compensation pipe 3 of pipe 2 and second
Place, is welded two mother law orchids 27,28, is sealed using rubber ring 30, when being tightened with bolt,
Stress compensation can be carried out using bellows in the middle of outer tube 4.
, will be entirely outer when carrying out dismounting flange replacement wrapping in the multilayer insulant 19 on the surface of testing tube 1
Sleeve pipe 4 is moved axially to opposite side, until exposing all heat-insulating materials on the outer surface of testing tube 1.Work as bag
When pricking material replacement completion, whole dismounting pipeline is back moved, finally tightened using bolt.
Further preferably, the exhaust outlet dividing plate 12, using by the way of the perforate of vertical direction the top,
The aperture of steam vent is arranged on to vertical the top, the test blast pipe 8 by the steam vent with it is described
Connected inside testing tube, this mode ensure that gas, in all discharges topmost, prevents gas at top
Aggregation forms high pressure and is forced out liquid, improves the security and accuracy of experiment.
This packet that to detect and calculate of cryogenic delivery pipe road Performance Test System described in above-described embodiment
Include：
(1) evaporation rate is tested：Deep cooling warehousing and transportation facilities is under specified fullness rate, and standing is reached after thermal balance, 24h
The percentage of the cryogenic liquid quality and cryogenic liquid quality under inner pressurd vessel dischargeable capacity of interior natural evaporation loss,
Unit is that percentage is daily (%/d)；Static evaporation rate is converted to using formula；
Experimental principle：The nature of cryogenic liquid using volume flowmeter or in the mass flow meter measurement unit interval
Evaporation capacity, or utilize the loss amount of the cryogenic liquid in weight method cooling water of units of measurement time.
(2) leaking heat is tested：Vacuum insulation equipment is sufficiently cool, reaches after thermal balance, in the unit interval from
Surrounding environment is delivered to the heat of vacuum insulation deep freeze refrigeration plant storage medium, and unit is watt (W).
(3) test temperature：Temperature sensor is uniformly attached to heat insulation layer outer surface and support outer surface, then
Lead is drawn into test temperature by temperature interface 14, unit is (K)；The temperature sensor is preferably adopted
Use copper-constantan thermocouple temperature sensor.
Implementation steps are as follows：
S100, compensates in pipe 3 and testing tube 1 toward the first compensation pipe 2, second and adds full capacity cryogenic media (such as
Liquid nitrogen)；The 3rd air bleeding valve 3, the 4th air bleeding valve 4 and the 6th switch valve 6 are opened, first switch valve is closed
1st, second switch valve 2, the 5th switch valve 5 and the 7th switch valve 7, are mended to the described first compensation pipe 2, second
Repay pipe 3 and testing tube 1 carries out precooling 2 hours；
S200, after precooling is finished, toward the liquid nitrogen of filling full capacity in testing tube 1, the first compensation pipe 1 and
Being also injected into cryogenic media reaches specified fullness rate simultaneously in second compensation pipe 2, it is ensured that have liquid nitrogen to enter in compensation pipe
Row leakage thermal compensation；
S300, according to GB/T18443.5《The part of vacuum insulation deep freeze refrigeration plant performance test method the 5th：It is quiet
State rate of evaporation and the 6th part：Leaking heat is measured》Test request, topping up stands 48h after terminating, quiet
The 3rd switch valve 3, the 4th switch valve 4 and the 6th switch valve 6 of gas outlet pipeline should be opened during putting, and is closed
Close first switch valve 1, second switch valve 2, the 5th switch valve 5 and the 7th switch valve 7.
S400, stands after 48h, closes the 6th switch valve 6, opens flowmeter 18 and opens the 7th switch
The switch valve 10 of valve 7 and the tenth；
After S500, the stability of flow of boil-off gas, and no more than 1h time interval collection, recording flowmeter
18 registrations, environment temperature and pressure, the hull-skin temperature of multilayer insulant 19, support 13 hull-skin temperatures,
The registration of the inlet temperature meter 17 of flowmeter 18 and pressure gauge 16, and the time of record data should be 24h；
S600, calculates testing tube static evaporation rate, and should be contrasted with the static evaporation rate of 24h before this.When quiet
When the excursion of state evaporation rate is less than 5%, then the data recorded are effective；When the excursion of static evaporation rate
During more than 5%, it is allowed to which once, the record time should be not less than 24h to record data again, and the data are again
Final entry data；
S700, by demounting flange, dragging outer tube 4 is moved axially toward side, and multilayer insulant 19 is complete
It is exposed entirely, test is replaced to heat-insulating material.
In the present embodiment, test evaporation rate and test leaking heat data processing are as follows：
(1) when being measured using wet gas flow meter, evaporation rate α is tested0Calculated by formula 1-1：
In above formula：
α0- test evaporation rate, unit is that percentage is daily (%/d)；
qv- boil-off gas volume flow daily mean, unit is cubic meter (m daily3/d)；
The correction coefficient of ψ-flowmeter, set-point during demarcation；
ρgThe density of gas under-standard atmospheric pressure (101.32kPa), 273.15K, unit is kilogram often stands
Square rice (kg/m3)；
ρ1The density of saturated liquid under-standard atmospheric pressure (101.32kPa), 273.15K, unit for kilogram
Every cubic metre of (kg/m3)；
The dischargeable capacity of V-test block, unit is cubic meter (m3)；
T-flowmeter entrance mean daily temperature, unit is Kelvin (K)；(the temperature gathered per hour
Value divided by times of collection)
P-per day the pressure of flowmeter entrance, unit is MPa (MPa)；
(2) when being measured using wet gas flow meter, leaking heat Q is tested0Calculated by formula 2-1：
In above formula：
Q0- test leaking heat, unit is watt (W)；
Gv- boil-off gas volume flow daily mean, unit is cubic meters per second (m3/s)；
The correction coefficient of ψ-flowmeter, set-point during demarcation；
ρgThe density of gas under-standard atmospheric pressure (101.32kPa), 273.15K, unit is kilogram often stands
Square rice (kg/m3)；
ρvThe saturated gas density of test medium under-experimental situation pressure daily mean, unit is kilogram often stands
Square rice (kg/m3)；
ρLThe Saturate liquid density of test medium under-experimental situation pressure daily mean, unit is kilogram often stands
Square rice (kg/m3)；
T-flowmeter entrance mean daily temperature, unit is Kelvin (K)；
P-per day the pressure of flowmeter entrance, unit is MPa (MPa)；
hfgThe latent heat of vaporization of saturated liquid under-standard atmospheric pressure (101.32kPa), 273.15K, unit is
Every kilogram of kJ (kilojoule) (kJ/kg).
Therefore, several implementations can be realized using the cryogenic delivery pipe road Performance Test System described in invention
The performance test of example.
Embodiment 1
As shown in Fig. 2 being the testing tube that the present invention is applied to that test warm area is (20K-300K) cryogenic media
The schematic cross-section in road；Including multilayer insulant 19, triangle as depicted is made into support 13 in Fig. 1
Shape is supported, outer tube 4, is vacuumized in the middle of inside and outside pipeline, and wrapping heat-insulating material carries out cold insulation；When test low temperature
When medium temperature is more than 20K, such as liquid nitrogen, liquid oxygen can be carried out defeated using triangular support and single woven hose
Send；When being tested, the compensation compensation pipe 3 of pipe 2 and second of testing tube 1, first can be made such as Fig. 2 institutes
Show structure, test system as shown in figure 1, test process, step are with reference to step S100-S700.
Embodiment 2
It is that the present invention is applied to test warm area cutting for the test pipeline of (4.5K-20K) with reference to shown in Fig. 3
Face schematic diagram；Mainly include：By in Fig. 1 in liquid nitrogen radiation shield 22, Liquid nitrogen precooler pipeline 23, the present embodiment
Star strut structure as described in Figure, testing tube 1, while using vacuum multi-layer insulation material are made in support 13
Wrapped up, vacuumized between Outer Tube and inner tube.When test cryogenic media temperature is extremely low, reach
4.5K-20K, such as liquid hydrogen, liquid helium；In order to be able to reach test request, that is, ensure follow-on test 24 hours
It is required that, the direct Radiant exothermicities of 4.5K to 300K are further reduced, the liquid nitrogen radiation shield 22 of centre need to be increased,
Ensure radiation shield surface temperature in 77K, pipeline 24 is same with the outer surface of liquid nitrogen radiation shield 22 wraps up in test
Multilayer insulant 19, and test the pipeline that pipeline selects to be relatively large in diameter as far as possible.Can be by testing tube 1,
The one compensation compensation pipe 3 of pipe 2 and second makes structure as shown in Figure 3.Using said structure, liquid nitrogen is included
Radiation shield can cause the radiation screen protection that there is 77K between cryogenic media (such as 4.5K warm areas) and extraneous radiation
Shield；And the conducting path of supporting construction 2 is very long, the effect for reducing leakage heat is served.Other test systems such as Fig. 1
Shown, test process, step are with reference to step S100-S700.
Embodiment 3
Vacuum multi-layer insulation is mainly used and vacuumized between tubes, and wrapping heat-insulating material structure.
The performance of vacuum, heat-insulating material in the middle of inner and outer pipes directly influences the cold insulation performance of cryogenic delivery pipe.For
The influences of the factor to heat-insulating material performance such as test variety classes, different Wrapping technicals, using detachable method
Orchid is tested above-mentioned factor.Dismountable flange and outer sleeve structure are used as Fig. 4 and Fig. 5 is illustrated,
Can be easy test is replaced to heat-insulating material, test system is used shown in Fig. 1.Meanwhile, using distribution
Temperature sensor carries out temperature test, test leaking heat and heat insulation layer appearance to 19 surfaces outside multilayer insulant
The performance that the difference of face temperature indicates multilayer insulant is good and bad.When big, the heat insulation layer appearance that measures leaking heat
Face temperature is low, then heat-insulating material poor-performing, and vice versa.Other test systems are as shown in figure 1, test
Process, step are with reference to step S100-S700.
When completing above-mentioned experiment, it is necessary to which when changing heat-insulating material 19, flange is taken apart, sleeve pipe 4 is dismantled in dragging
Moved axially to left end, expose wrapping heat-insulating material and carry out replacing test.
Embodiment 4
In conjunction with the embodiments 3, technical scheme can be used for the leakage thermal performance test of different supporting constructions.
When not arranging support on testing tube 1, only in the compensation arrangement supporting construction of pipe 2,3, testing tube can be measured
The leaking heat of 1 heat-insulating material；Then, 1-3 supports are sequentially arranged in test pipeline 1, then carried out above-mentioned
Test process and step；When can obtain testing tube arrangement support, by supporting the leakage heat with heat-insulating material always
The leaking heat of amount, the in conjunction with the embodiments heat-insulating material that 3 tests are obtained, the difference of two leaking heats is by branch
The leaking heat of support, while supporting the temperature on 13 surfaces also to can verify that the leakage hot property of support.Pass through support 13
Leaking heat it is big, same level supports that the temperature on 13 surfaces is lower, then the performance supported is poorer.
So far, the specific embodiment party of present invention leakage thermal performance test system and vacuum multi-layer insulation test is given
Case.
Compared with the Testing Platform of existing cryogenic delivery pipe road, in technical scheme, using two
The compensator section pipeline at end carries out leakage thermal compensation, it is ensured that the test performance of test pipeline.Because compensator section is located always
In liquefaction, it is known that the leaking heat of test pipeline boil-off gas is the leaking heat of practical vacuum multilayer heat insulation,
Eliminate the influence of testing tube two ends leakage heat.The present invention additionally uses a kind of dismountable flange arrangement, can be with
Test is replaced to multilayer insulant, this for practical implementation there is actual measurement to be worth, and be
Theory analysis research provides experiment basis.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to embodiment
Limit.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And by
Among this obvious changes or variations extended out is still in the protection domain of the invention.
Claims (10)
1. a kind of cryogenic delivery pipe road Performance Test System, it is characterised in that including：
The first compensation pipe, the second compensation pipe and testing tube for storing cryogenic media, described testing tube one end
It is connected with described first compensation pipe one end, the testing tube other end is connected with described second compensation pipe one end,
The other end at the two ends of testing tube, the other end of the first compensation pipe and the second compensation pipe sets a dividing plate respectively；
An outer tube is set respectively outside the first compensation pipe, the second compensation pipe and testing tube, it is described outer
Filling multilayer heat-insulating material between sleeve pipe and the first compensation pipe, the second compensation pipe and testing tube；
Provided with test filler pipe, compensation filler pipe and compensation blast pipe, the compensation in the first compensation pipe
Filler pipe and compensation blast pipe pass the dividing plate that the first step compensates tube end, compensate filler pipe is passed one
End is connected by first switch valve with a cryogenic media storage source, compensates one end for passing of blast pipe by the
Three switch valves and atmosphere；One end of the test filler pipe pass first step compensation tube end every
Plate is simultaneously connected by second switch valve with the cryogenic media storage source, and the other end passes through testing tube one end
Dividing plate is connected with the testing tube；
Compensation filler pipe also is provided with the second compensation pipe and compensates blast pipe, compensation filler pipe and compensation row
Tracheae passes the dividing plate that second step compensates tube end, one end for passing of compensation filler pipe by the 5th switch valve with
The cryogenic media storage source is connected, and one end that compensation blast pipe is passed is connected by the 4th switch valve and air
It is logical；
Test blast pipe is additionally provided with the second compensation pipe, described test blast pipe one end passes the second compensation
The dividing plate of pipe is simultaneously connected with a rewarming heat exchanger, pressure gauge, thermometer and flowmeter, the test row
The dividing plate of the other end of tracheae through the testing tube other end is connected with the testing tube；Flowmeter is used to test
The leakage flow of cryogenic media, thermometer is used for sensed flow meter entrance cryogenic media temperature, and pressure gauge is used for
Sensed flow meter entrance cryogenic media pressure, rewarming heat exchanger is used for the cryogenic gas excluded to test blast pipe
Carry out rewarming；
One end of the test blast pipe second compensation pipe dividing plate is led to by the 6th switch valve and atmosphere
Cross the 7th switch valve with the rewarming heat exchanger to be connected, the side that the flowmeter excludes cryogenic gas passes through
Tenth switch valve and atmosphere；
Cryogenic delivery pipe road Performance Test System also include a main controller respectively with the pressure gauge, temperature
Degree meter, flowmeter, first switch valve, second switch valve, the 3rd switch valve, the 4th switch valve, the 5th open
Valve, the 6th switch valve, the 7th switch valve, the tenth switch valve is closed to electrically connect, main controller control first switch valve,
Second switch valve, the 3rd switch valve, the 4th switch valve, the 5th switch valve, the 6th switch valve, the 7th switch
Valve and the tenth switch valve are opened or closed, and are controlled the pressure gauge, thermometer and flowmeter and received pressure
The signal of power meter, thermometer and flowmeter feedback, according to the evaporation rate of the signal of change cryogenic media of feedback and
Leaking heat.
2. cryogenic delivery pipe road according to claim 1 Performance Test System, it is characterised in that described
Be additionally provided with temperature interface on the outer tube of second compensation pipe, the corresponding multilayer insulant of the testing tube it is outer
Post temperature sensor on surface, the lead of the temperature sensor drawn by temperature interface and with the master
Control device is connected.
3. cryogenic delivery pipe road according to claim 2 Performance Test System, it is characterised in that described
On the inside of the outer tube of temperature interface one end connection the second compensation pipe, one peace of temperature interface other end formation
Base is filled, and is disposed with mounting seat the first cover plate, the second cover plate and the 3rd lid from inside to outside
Plate, between the mounting seat and the first cover plate, between the first cover plate and the second cover plate and the second cover plate and
Sealed respectively using fluorine cushion rubber between three cover plates, the lead of the temperature sensor is from the fluorine cushion rubber
Middle punch is drawn to be connected with the main controller.
4. cryogenic delivery pipe road according to claim 3 Performance Test System, it is characterised in that described
It is provided between the corresponding outer tube of testing tube on multiple supports, the support outer surface and also is provided with TEMP
Device, the lead of temperature sensor is drawn from the fluorine cushion rubber middle punch and is connected with the main controller.
5. cryogenic delivery pipe road according to claim 4 Performance Test System, it is characterised in that described
Corresponding outer tube is removably socketed on the testing tube outside testing tube.
6. cryogenic delivery pipe road according to claim 5 Performance Test System, it is characterised in that described
The internal diameter of corresponding outer tube is respectively greater than the corresponding outer tube of the first compensation pipe and second outside testing tube
The internal diameter of the corresponding outer tube of compensation pipe, the corresponding overcoat tube end of the testing tube provided with two public law orchids,
First compensation is managed and is respectively equipped with mother law orchid on corresponding outer tube and the corresponding outer tube of the second compensation pipe,
Public law is blue to be fixedly connected with mother law orchid using bolt, and public law is blue to be provided with sealing ring between mother law orchid.
7. cryogenic delivery pipe road according to claim 6 Performance Test System, it is characterised in that described
The corresponding multilayer insulant of testing tube it is replaceable to be arranged on the testing tube corresponding with the testing tube outer
Between sleeve pipe.
8. cryogenic delivery pipe road according to claim 1 Performance Test System, it is characterised in that described
The export pipeline of rewarming heat exchanger also passes through the 8th switch valve and the 9th switch valve and atmosphere of concatenation.
9. cryogenic delivery pipe road according to claim 1 Performance Test System, it is characterised in that described
The other end of test blast pipe passes through the top for being arranged on testing tube exhaust side dividing plate to be connected with the testing tube
It is logical.
10. the cryogenic delivery pipe road Performance Test System according to claim 1-9 any one, its feature
It is, the support level triangular support or star strut, between the testing tube and corresponding outer tube also
Provided with the liquid nitrogen radiation shield for being socketed in testing tube periphery, the liquid nitrogen radiation shield is carried out by Liquid nitrogen precooler pipeline
Cooling.
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| CN201610022188.9A CN106970107B (en) | 2016-01-13 | 2016-01-13 | Low-temperature infusion pipeline performance test system |
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| CN201610022188.9A CN106970107B (en) | 2016-01-13 | 2016-01-13 | Low-temperature infusion pipeline performance test system |
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| CN113281376A (en) * | 2021-04-22 | 2021-08-20 | 浙江大学 | Device and method for measuring deep low-temperature heat leakage rate of material |
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| CN106970107B (en) | 2023-05-23 |
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