CN206695878U - A kind of device for improving the cryogenic liquid gauge check degree of accuracy - Google Patents
A kind of device for improving the cryogenic liquid gauge check degree of accuracy Download PDFInfo
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- CN206695878U CN206695878U CN201720571308.0U CN201720571308U CN206695878U CN 206695878 U CN206695878 U CN 206695878U CN 201720571308 U CN201720571308 U CN 201720571308U CN 206695878 U CN206695878 U CN 206695878U
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Abstract
The utility model discloses a kind of device for improving the cryogenic liquid gauge check degree of accuracy, including vacuum multi-layer heat insulating box and low temperature liquid storage casing；It is vacuum chamber inside vacuum multi-layer heat insulating box, tested liquid circulation duct equipped with proving flowmeter is placed in vacuum chamber, the pipeline one end is the tested liquid-inlet of first led to outside vacuum multi-layer heat insulating box, and the other end is the tested liquid outlet of first led to outside vacuum multi-layer heat insulating box；Cryogenic liquid is full of in low temperature liquid reserve tank body, tested liquid circulation duct equipped with tested flowmeter is placed in case in cryogenic liquid, the pipeline one end is to lead to the second external tested liquid-inlet of low temperature liquid reserve tank, and the other end is to lead to the second external tested liquid outlet of low temperature liquid reserve tank.The utility model ensures proving flowmeter and the stable and consistent of tested flowmeter local environment using vacuum multi-layer heat insulating box and low temperature liquid storage casing, reduces the rate of gasification that low temperature is detected liquid, reduces measurement error, improve the gauge check degree of accuracy.
Description
Technical field
Cryogenic liquid gauge check technical field is the utility model is related to, is specially a kind of raising cryogenic liquid gauge check
The device of the degree of accuracy.
Background technology
During due to cryogenic liquid gauge check, by the tested cryogenic liquid of associated pipe and flowmeter normal
Under normal pressure and temperature environment easily gasification the characteristics of, it is necessary to by carrying out special technological transformation to the part for participating in metering, it is low to meet
The gauge check of geothermal liquid reaches the requirement of 0.1% high accuracy grade.
Utility model content
The purpose of this utility model cryogenic liquid rate of gasification in it can effectively debase the standard table and checklist in offer one kind,
To improve the device that cryogenic liquid gauge check class of accuracy reaches 0.1%.Technical scheme is as follows：
A kind of device for improving the cryogenic liquid gauge check degree of accuracy, including vacuum multi-layer heat insulating box and low temperature liquid reserve tank
Body；It is vacuum chamber inside vacuum multi-layer heat insulating box, the tested liquid circulation duct equipped with proving flowmeter is placed in the vacuum
Interior, the pipeline one end are the tested liquid-inlet of first led to outside vacuum multi-layer heat insulating box, and the other end is more to lead to vacuum
The first tested liquid outlet outside layer heat insulating box；Cryogenic liquid, the quilt equipped with tested flowmeter are full of in low temperature liquid reserve tank body
Inspection liquid communication pipeline is placed in case in cryogenic liquid, and the pipeline one end is to lead to the second external tested liquid of low temperature liquid reserve tank
Import, the other end are to lead to the second external tested liquid outlet of low temperature liquid reserve tank.
Further, the outer casing inner wall of the vacuum multi-layer heat insulating box is provided with heat-insulating pipeline, is full of pipe in heat-insulating pipeline
Road cryogenic liquid.
Further, the heat-insulating pipeline is provided with pipeline charging liquid at low-temperature mouth and pipeline cryogenic liquid outlet,
Manometer is additionally provided with the heat-insulating pipeline.
Further, the externally connected circulatory system of pipeline cryogenic liquid outlet.
Further, it is lagging casing outside the low temperature liquid reserve tank body, closure is provided with the top of lagging casing.
Further, casing liquid filling mouth and casing liquid outlet, case are additionally provided with the low temperature liquid storage casing
The externally connected circulatory system of body liquid outlet.
Further, the vacuum instrument for being used for vacuum environment in detection case is provided with the vacuum multi-layer heat insulating box
Table.
Further, the cryogenic liquid is liquid nitrogen.
The beneficial effects of the utility model are：The utility model is protected using vacuum multi-layer heat insulating box and low temperature liquid storage casing
The stable and consistent of proving flowmeter and tested flowmeter local environment is demonstrate,proved；Vacuum multi-layer heat insulating box will using liquid nitrogen separating layer
Tested liquid separates with external environment, reduces the rate of gasification that low temperature is detected liquid；By tested flowmeter in low temperature liquid storage casing
The uniformity that the cryogenic liquid in tested flowmeter keeps physical characteristic is flowed through with the mode of immersing in liquid nitrogen, reduces gasification
Rate, reduce measurement error；Cryogenic liquid is set to be recycled in test process using external circulating system simultaneously, there is provided
Stable detection environment, reduce and waste, reduce testing cost.
Brief description of the drawings
Fig. 1 be the utility model improve the cryogenic liquid gauge check degree of accuracy device in vacuum multi-layer heat insulating box knot
Structure schematic diagram.
Fig. 2 be the utility model improve the cryogenic liquid gauge check degree of accuracy device in vacuum multi-layer heat insulating box a left side
View.
Fig. 3 be the utility model improve the cryogenic liquid gauge check degree of accuracy device in vacuum multi-layer heat insulating box the right side
View.
Fig. 4 shows for the structure of low temperature liquid storage casing in the device of the utility model raising cryogenic liquid gauge check degree of accuracy
It is intended to.
Fig. 5 be the utility model improve the cryogenic liquid gauge check degree of accuracy device in low temperature liquid storage casing left view
Figure.
Fig. 6 regards for the right side of low temperature liquid storage casing in the device of the utility model raising cryogenic liquid gauge check degree of accuracy
Figure.
In figure：1- vacuum chambers；2- shells；3- proving flowmeters；4- vacuum multi-layer heat insulating boxes；5- heat-insulating pipelines；6-
One tested liquid-inlet；7- first is detected liquid outlet；8- vacuum instrument；9- pipeline charging liquid at low-temperature mouths；10- Instrument for Pressure
Table；11- pipeline cryogenic liquid outlets；12- closures；13- is detected flowmeter；14- low temperature liquid storage casings；15- lagging casings；
16- second is detected liquid-inlet；17- second is detected liquid outlet；18- casing liquid filling mouths；19- casing liquid outlets.
Embodiment
The utility model is described in further details with specific embodiment below in conjunction with the accompanying drawings, as shown in Figure 1 and Figure 4,
A kind of device for improving the cryogenic liquid gauge check degree of accuracy, including vacuum multi-layer heat insulating box 4 and low temperature liquid storage casing 14；Very
The empty inside of multilayer insulation casing 4 is vacuum chamber 1, and the tested liquid circulation duct equipped with proving flowmeter 3 is placed in the vacuum chamber
Interior, the pipeline one end is the tested liquid-inlet 6 of first led to outside vacuum multi-layer heat insulating box 4, and the other end is more to lead to vacuum
The first tested liquid outlet 7 outside layer heat insulating box 4, as shown in Figures 2 and 3.Cryogenic liquid is full of in low temperature liquid storage casing 14,
Tested liquid circulation duct equipped with tested flowmeter 13 is placed in case in cryogenic liquid, and the pipeline one end is to lead to low temperature liquid storage
The second tested liquid-inlet 16 outside casing 14, the other end are the tested liquid outlet of second led to outside low temperature liquid storage casing 14
17, as shown in Figure 5 and Figure 6.
The inwall of shell 2 of the vacuum multi-layer heat insulating box 4 of the present embodiment is provided with heat-insulating pipeline 5, is full of pipe in heat-insulating pipeline 5
Road cryogenic liquid, the cryogenic liquid of the present embodiment use liquid nitrogen.Heat-insulating pipeline 5 is provided with pipeline charging liquid at low-temperature mouth 9 and pipe
Road liquid outlet 11, manometer 10 is additionally provided with the heat-insulating pipeline 5.It is provided with vacuum multi-layer heat insulating box 4 and is used to examine
The vacuum instrument 8 of vacuum environment in measuring tank.
Tested cryogenic liquid enters proving flowmeter 3 by the first tested liquid-inlet 6, flows through proving flowmeter 3, then by
First tested liquid outlet 7 is flowed out, and proving flowmeter is in vacuum chamber 1.Shell 2 is stainless steel welded using low temperature resistant anti-high pressure
Form, there are pressure-resistant low temperature tolerance characteristicses, the inside of vacuum multi-layer heat insulating box 4 is in vacuum state, by vacuum instrument 8 to casing
Interior vacuum state is monitored, and the cryogenic liquid in heat-insulating pipeline 5 injects via pipeline charging liquid at low-temperature mouth 9, and by pressing
Pressure is monitored after power instrument 10 gasifies to it, can be discharged to the outside during hypertonia and followed by pipeline liquid outlet 11
Loop system, the constant of vacuum multi-layer heat insulating box Plays flow meter temperature is maintained, ensures detected cryogenic liquid not by outer
Boundary's environment temperature, pressure etc. change, and keep the unification of its physical characteristic, improve the degree of accuracy of detection.
Vacuum multi-layer heat insulating box is separated tested liquid and external environment using liquid nitrogen separating layer, reduces low temperature test solution
The rate of gasification of body.Casing is formed using low temperature resistant anti-high pressure stainless steel integral solder, and there is vacuum tolerance level to completely cut off with temperature
Protect, filling cryogenic liquid plays a part of completely cutting off ambient temperature in heat-insulating pipeline, ensures vacuum chamber internal standard flow
It is constant to count local environment temperature.Vacuum instrument monitoring case vivo environment is used simultaneously, and manometer monitors low in heat-insulating pipeline
The fluid physics state of geothermal liquid, ensure the safety of the constant and whole casing of integrated environment, avoid the caused part that gasifies
Deformation is even exploded.Tested cryogenic liquid keeps physical characteristic consistent with the cryogenic liquid injected in heat-insulating pipeline, reduce because of
The measurement error that temperature environment change is brought, while cryogenic liquid is circulated profit in test process using external circulating system
With, reduce and waste, reduction testing cost.
The outside of low temperature liquid storage casing 14 is lagging casing 15, and the top of lagging casing 15 is provided with closure 12, low temperature liquid reserve tank
Casing liquid filling mouth 18 and casing liquid outlet 19 are additionally provided with body 14, by filling cryogenic liquid in low temperature liquid storage casing 14
Such as：Liquid nitrogen, injected by casing liquid filling mouth 18, made whole box sealing with closure 12 after the full cryogenic liquid of filling
The cryogenic liquid obtained in the tested flowmeter flowed into by the second tested liquid-inlet 16 is in isoperibol, reduces rate of gasification, carries
The degree of accuracy of high gauge check.And after detection, cryogenic liquid in casing is discharged to outside by casing liquid outlet 19
Portion's circulatory system.
Using in low temperature liquid storage casing by tested flowmeter with immersing in liquid nitrogen by the way of flow through in tested flowmeter
Cryogenic liquid keeps the uniformity of physical characteristic, reduces rate of gasification.Low temperature liquid storage casing is equally stainless using low temperature resistant anti-high pressure
Steel integral solder forms, and after tested flowmeter is installed, is sealed against using closure, prevents cryogenic liquid from revealing.Quilt
Inspection flowmeter is immersed in cold liquid environment, the tested liquid local environment temperature flowed through and residing immersion liquid environment temperature
Unanimously, gasification boiling phenomenon will not be produced, its physical characteristic is kept during whole flow detection, reduces measurement error.With
It is filled and is discharged by external circulating system by filler and outlet in the cryogenic liquid of the tested flowmeter of immersion, is ensured
Cryogenic liquid recycles.
Vacuum multi-layer heat insulating box and low temperature liquid storage casing ensure the steady of proving flowmeter and tested flowmeter local environment
It is fixed consistent, substantially increase the degree of accuracy of gauge check.
Claims (8)
1. a kind of device for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that including vacuum multi-layer heat insulating box（4）
With low temperature liquid storage casing（14）；Vacuum multi-layer heat insulating box（4）Inside is vacuum chamber（1）, equipped with proving flowmeter（3）It is tested
Liquid communication pipeline is placed in the vacuum chamber, and the pipeline one end is to lead to vacuum multi-layer heat insulating box（4）Outer first is tested
Liquid-inlet（6）, the other end is to lead to vacuum multi-layer heat insulating box（4）The tested liquid outlet of outer first（7）；Low temperature liquid reserve tank
Body（14）It is interior to be full of cryogenic liquid, equipped with tested flowmeter（13）Tested liquid circulation duct be placed in case in cryogenic liquid,
The pipeline one end is to lead to low temperature liquid storage casing（14）The tested liquid-inlet of outer second（16）, the other end is to lead to low temperature liquid storage
Casing（14）The tested liquid outlet of outer second（17）.
2. the device according to claim 1 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that the vacuum
Multilayer insulation casing（4）Shell（2）Inwall is provided with heat-insulating pipeline（5）, heat-insulating pipeline（5）It is interior to be full of pipeline cryogenic liquid.
3. the device according to claim 2 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that described heat-insulated
Pipeline（5）It is provided with pipeline charging liquid at low-temperature mouth（9）With pipeline liquid outlet（11）, the heat-insulating pipeline（5）On also set
There is manometer（10）.
4. the device according to claim 3 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that the pipeline
Liquid outlet（11）The externally connected circulatory system.
5. the device according to claim 1 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that the low temperature
Liquid storage casing（14）Outside is lagging casing（15）, lagging casing（15）Top is provided with closure（12）.
6. the device according to claim 1 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that the low temperature
Liquid storage casing（14）On be additionally provided with casing liquid filling mouth（18）With casing liquid outlet（19）, casing liquid outlet（19）
The externally connected circulatory system.
7. the device according to claim 1 for improving the cryogenic liquid gauge check degree of accuracy, it is characterised in that the vacuum
Multilayer insulation casing（4）It is interior to be provided with the vacuum instrument for being used for vacuum environment in detection case（8）.
8. the device of the raising cryogenic liquid gauge check degree of accuracy according to claim any one of 1-7, it is characterised in that
The cryogenic liquid is liquid nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571308.0U CN206695878U (en) | 2017-05-22 | 2017-05-22 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720571308.0U CN206695878U (en) | 2017-05-22 | 2017-05-22 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
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| CN206695878U true CN206695878U (en) | 2017-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989802A (en) * | 2017-05-22 | 2017-07-28 | 中国测试技术研究院流量研究所 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
-
2017
- 2017-05-22 CN CN201720571308.0U patent/CN206695878U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989802A (en) * | 2017-05-22 | 2017-07-28 | 中国测试技术研究院流量研究所 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
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