CN206876310U - A kind of cryogenic fluid transfer pipeline leaks heat test device - Google Patents
A kind of cryogenic fluid transfer pipeline leaks heat test device Download PDFInfo
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- CN206876310U CN206876310U CN201720643601.3U CN201720643601U CN206876310U CN 206876310 U CN206876310 U CN 206876310U CN 201720643601 U CN201720643601 U CN 201720643601U CN 206876310 U CN206876310 U CN 206876310U
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- cryogenic
- test device
- temperature
- helium
- transfer lines
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Abstract
Heat test device is leaked the utility model discloses a kind of cryogenic fluid transfer pipeline, the fluid of described device including test, control system, refrigeration machine, primary heater, cryogenic transfer lines, secondary heater, mass flowmenter, surge tank and the circulating pump for circulating along fluid transmission direction connection successively.The device can efficiently utilize test cryogen, test the leaking heat of low temperature transmission pipeline exactly, while be tested suitable for different cryogenic transfer lines, and test all-purpose is good.
Description
Technical field
The utility model belongs to cryogenic fluid transfer field, and in particular to a kind of cryogenic fluid transfer pipeline leakage Thermal test dress
Put.
Background technology
Cryogenic fluid transfer pipeline is widely used in cryogenic fluid transfer field.It is right with reference to the application environment of cryogen
The insulation requirements of its transfer line are extremely strict.The accurate measurement of leaking heat is carried out to cryogen pipeline turns into cryogen pipe
The problem of line is designed with considering required for engineer applied.
Under conventional situation, filling corresponding cryogen, treats that cryogen stands one section in cryogenic fluid transfer pipeline
After time recovers stable, by measuring amount of vaporization of the cryogen within certain a period of time, further according to the vaporization of the cryogen
Calorific value extrapolates cryogenic fluid transfer pipeline leakage calorific value.This method can not ensure the accurate measurement of leakage heat, and reason mainly has at 2 points：
First, state of the cryogen in cryogenic fluid transfer pipeline is different, cryogen is static when test, and real
Cryogen is motion during the use of border, and this just determines that the accuracy of Lou Thermal test needs to be investigated；Second, cryogen passes
Defeated pipeline volume is usually quite small, the exception of any one external condition, can all influence to leak the result of Thermal test, test is accurate
True property is poor.
Utility model content
The utility model makes improvements for existing technical problem, i.e. utility model technical problem to be solved is to carry
Heat test device is leaked for a kind of cryogenic fluid transfer pipeline, the leaking heat of low temperature transmission pipeline can be tested exactly.
To achieve the above objectives, the technical solution adopted in the utility model includes a kind of leakage heat survey of cryogenic fluid transfer pipeline
Trial assembly is put, specific as follows：
A kind of cryogenic fluid transfer pipeline leaks heat test device, including test passes with fluid, control system and along fluid
The refrigeration machine of connection, primary heater, cryogenic transfer lines, secondary heater, mass flowmenter, buffering are circulated successively in defeated direction
Tank and circulating pump；First pressure harvester that the control system is set to the cryogenic transfer lines rear end, the first temperature
The second temperature harvester that harvester and the cryogenic transfer lines front end are set carries out signal acquisition, and adds to first
Hot device, secondary heater carry out heating and temperature control.
As the improvement of above-mentioned cryogenic fluid transfer pipeline leakage heat test device, the fluid is helium.
As the further improvement of above-mentioned cryogenic fluid transfer pipeline leakage heat test device, the surge tank is also respectively connected with
Emptying valve, the helium steel cylinder which is provided with cylinder valve, the control system carries out signal acquisition to the pressure of surge tank, right
The cylinder valve and the emptying valve are controlled.
The principle and technique effect of above-mentioned cryogenic fluid transfer pipeline leakage heat test device are as follows：
1) constant flow of the cryogen in cryogenic transfer lines is realized；Primary heater control flows into low temperature transmission
The temperature of the cryogen of pipeline, secondary heater and mass flowmenter are combined the fluid of measurement outflow cryogenic transfer lines
Flow, with reference to related pressure and temperature sensing device, cryogenic fluid transfer pipeline can accurately be calculated by Thermodynamics Formulas
Leak calorific value.
2) said apparatus that is, after the fluid cushion of test, is entered again by the closed cycle structure of itself through circulating pump
Enter refrigeration, realize recycling for fluid, reduce the waste of resource.
3) helium is used to test various cryogenic transfer lines leakage thermal measurements as cryogen.Because helium has stagnation temperature
The characteristics of low is spent, extremely stable and it is difficult to liquefaction and solidification.Leakage Thermal test is carried out by the use of helium as cryogen, there is provided more
Wide in range temperature range, meet the test needs of Different hypothermia transfer line target temperature, there is the good technology of test all-purpose
Effect.
Brief description of the drawings
Fig. 1 is that cryogenic fluid transfer pipeline of the present utility model leaks heat test device composition figure
Embodiment
Describe to be used to disclose the utility model so that those skilled in the art can realize the utility model below.Retouch below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
For sake of convenience and for purpose of brevity, it is preceding consistent for the direction of flow of fluid formed by the application, it is afterwards flow of fluid
Inverse direction.
Cryogenic fluid transfer pipeline leakage heat test device in the present embodiment includes refrigeration machine 10, primary heater 21, the
Two heaters 22, tested cryogenic transfer lines 30, mass flowmenter 40, surge tank 50, circulating pump 60, control system 70.
Along fluid transmission direction, refrigeration machine 10, primary heater 21, secondary heater 22, tested cryogenic transfer lines 30, quality
Flowmeter 40, surge tank 50, circulating pump 60 are in turn connected to form loop structure.
Refrigeration machine 10 will flow into helium and be cooled in circulating pump 60.In Project Realization, the low temperature helium of the output of refrigeration machine 10
Target temperature requirement of the temperature degree less than cryogenic transfer lines 30.Low-temperature helium is after primary heater 21 is heated from low temperature
Flowed out in transfer line 30.Because the helium temperature that cryogenic transfer lines 30 flow out is relatively low, mass flowmenter is difficult to meet directly
The requirement of flow measurement is carried out to low-temperature helium.Therefore it need to enter secondary heater 22 in the helium that cryogenic transfer lines 30 flow out and heat
The measurement of flow is carried out after to normal temperature by flow meter 40.Helium after flow measurement flows into surge tank 50 and supplies circulating pump
60 recycle.
The measurement of the leaking heat of cryogenic transfer lines 30 is to calculate leakage calorific value Q by Thermodynamics Formulas Q=cm △ t to realize
's.Implementation process needs to measure cryogen by cryogenic fluid transfer pipeline inlet and outlet temperature difference △ t, and the matter of the period
Flow m is measured, and cryogen is the specific heat capacity C of helium.Helium specific heat capacity C can be obtained by measuring its calculation of pressure, be belonged to
General knowledge known in this field.In the present embodiment, it is provided with the first helium pressure harvester in the rear end of primary heater 21 and carries out helium
Pressure measxurement.The porch of cryogenic transfer lines 30 is provided with inlet temperature harvester, and exit is provided with outlet temperature harvester.
Pressure change can be produced by flowing through cryogenic transfer lines 30 in view of cryogen, for more accurate progress helium specific heat capacity
Calculate.One kind as the present embodiment is improved, and being additionally provided with second pressure harvester in cryogenic transfer lines 30 carries out pressure survey
Amount.Helium specific heat capacity C by above-mentioned two pressure acquisitions value mean value calculation.Associated gas pressure measxurement, temperature survey it is specific
Embodiment, to those skilled in the art, without can be achieved by creative work, I will not elaborate.
Control system 70 is acquired, to mass flow to the gas pressure and temperature information at the both ends of cryogenic transfer lines 30
The flow of meter 40 carries out signal acquisition.Meanwhile temperature control is carried out to primary heater 21 and secondary heater 22.First heating
The controlling value of the outlet helium temperature of device 21 is the test target temperature of cryogenic transfer lines 30.The helium of secondary heater 22 goes out
Mouth temperature should be controlled in the operating temperature range of the energy accurate measurement helium gas flow of mass flowmenter 40, such as normal temperature.
Due in surge tank 50 helium pressure may not just meet experiment condition from.In the present embodiment, surge tank 50 also connects
It is connected to helium steel cylinder 80.When hypotony in surge tank 50, the steel cylinder being connected between surge tank 50 and helium steel cylinder 80 is opened
Valve, tonifying Qi is carried out to surge tank 50.When hypertonia in surge tank 50, open the emptying valve that surge tank 50 is connected and carry out
Deflate.Control system 70 carries out signal acquisition to the pressure of surge tank 50, and the above-mentioned two valve for connecting surge tank 50 is carried out
Switch control.
In the present embodiment, various cryogenic fluid transfer pipeline leakage thermal measurements are tested using helium as cryogen.This is
Due to the characteristics of helium critical-temperature is low, extremely stable and be difficult liquefaction and solidification compared to other fluids.For example oxygen exists
Under standard state, it is changed into light blue liquid when temperature is -183 DEG C；Nitrogen at normal atmospheric pressure, is cooled to -195.8 DEG C
When, become do not have coloured liquid；And the critical-temperature of helium is -268 DEG C.Because helium critical-temperature is away from cryogenic piping survey
The target temperature of examination, cryogen are difficult to the phenomenon that gas-liquid two-phase be present, and test accuracy is high.Enter by the use of helium as cryogen
Row leakage Thermal test, also provides more wide in range temperature range, meets the target temperature test needs of Different hypothermia transmission pipeline.
Tested as Different hypothermia transmission pipeline need to be directed to, low temperature transmission pipeline need to only be changed.
In the present embodiment, helium due to being recycled by the circulating pump 60 for connecting surge tank 50, avoid from
The waste that cryogenic transfer lines 30 directly empty after flowing out.
Method of testing based on the cryogenic fluid transfer pipeline leakage heat test device described in above-described embodiment is as follows：
Cryogen refrigerant 10 freezes, the heated target temperature reached required for cryogenic transfer lines 30, low temperature stream
Body carries out flow measurement after flowing through cryogenic transfer lines 30, flows into surge tank thereafter, and circulating pump follows the cryogen of surge tank
Ring such as refrigeration machine.Cryogenic fluid pressure, temperature and the fluid flow at measurement cryogenic transfer lines end in real time, it is public according to thermodynamics
Formula Q=cm △ t, calculate the leaking heat of cryogenic transfer lines.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply principle of the present utility model, the utility model also has respectively on the premise of the spirit and scope of the utility model is not departed from
Kind changes and improvements, these changes and improvements are both fallen within claimed the scope of the utility model.The requires of the utility model
Protection domain defined by appended claims and its equivalent.
Claims (4)
1. a kind of cryogenic fluid transfer pipeline leaks heat test device, it is characterised in that including test fluid, control system and
The refrigeration machine of connection, primary heater, cryogenic transfer lines, secondary heater, quality stream are circulated successively along fluid transmission direction
Gauge, surge tank and circulating pump；First pressure harvester that the control system is set to the cryogenic transfer lines rear end,
The second temperature harvester that first temperature collecting device and the cryogenic transfer lines front end are set carries out signal acquisition, and
Heating and temperature control is carried out to primary heater, secondary heater.
A kind of 2. cryogenic fluid transfer pipeline leakage heat test device according to claim 1, it is characterised in that the fluid
For helium.
3. a kind of cryogenic fluid transfer pipeline leakage heat test device according to claim 1 or 2, it is characterised in that described
Surge tank is also respectively connected with emptying valve, which is provided with the helium steel cylinder of cylinder valve, pressure of the control system to surge tank
Power carries out signal acquisition, and the cylinder valve and the emptying valve are controlled.
4. a kind of cryogenic fluid transfer pipeline leakage heat test device according to claim 1 or 2, it is characterised in that described
Cryogenic transfer lines front end is provided with second pressure harvester, and the control system carries out signal to the second pressure harvester
Collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720643601.3U CN206876310U (en) | 2017-06-05 | 2017-06-05 | A kind of cryogenic fluid transfer pipeline leaks heat test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720643601.3U CN206876310U (en) | 2017-06-05 | 2017-06-05 | A kind of cryogenic fluid transfer pipeline leaks heat test device |
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| Publication Number | Publication Date |
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| CN206876310U true CN206876310U (en) | 2018-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238450A (en) * | 2017-06-05 | 2017-10-10 | 安徽万瑞冷电科技有限公司 | A kind of cryogenic fluid transfer pipeline leakage heat test device and method |
-
2017
- 2017-06-05 CN CN201720643601.3U patent/CN206876310U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107238450A (en) * | 2017-06-05 | 2017-10-10 | 安徽万瑞冷电科技有限公司 | A kind of cryogenic fluid transfer pipeline leakage heat test device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20190605 |