CN205640226U - Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time - Google Patents
Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time Download PDFInfo
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- CN205640226U CN205640226U CN201620224718.3U CN201620224718U CN205640226U CN 205640226 U CN205640226 U CN 205640226U CN 201620224718 U CN201620224718 U CN 201620224718U CN 205640226 U CN205640226 U CN 205640226U
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- storage tank
- level gauge
- vacuum insulation
- differential pressure
- insulation storage
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Abstract
Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time, its characterized in that: the high vacuum insulation storage tank is got through the gaseous phase and is pressed the first differential pressure formula level gauge of valve connection, and first differential pressure formula level gauge is got through first liquid phase and is pressed the valve to be connected to the high vacuum insulation storage tank, and first balanced valve connects in parallel at first differential pressure formula level gauge both ends, the high vacuum insulation storage tank is got through the gaseous phase and is pressed valve connection second differential pressure type level gauge, and the second differential pressure type level gauge is got through the second liquid phase and is pressed the valve to be connected to the high vacuum insulation storage tank, and the second balanced valve connects in parallel at second differential pressure type level gauge both ends, and first liquid phase is got and is pressed valve and second liquid phase to get to have vertical difference in height H between the pressure valve.
Description
Technical field
This utility model is for LNG gas station, satellite station (Vaporizing Station), tank car and small-sized deposit station, and in measuring and calculating vacuum insulation storage tank, the actual liquid level height of LNG, belongs to LNG accumulating field.
Background technology
The city gas facilities such as LNG gas station, satellite station (Vaporizing Station), tank car and small-sized deposit station store LNG frequently with the vertical of vacuum insulation or horizontal low temperature storage tank.For technique and safety need, vacuum insulation storage tank must install the level gauge system that 2 sets are separate.At present, use both at home and abroad generally a set of differential pressure type level meter systems to measure LNG liquid level, use other set tank top overflow system to control the high level of LNG in storage tank.Owing to LNG is mixture, its density changes with liquid component and the change of temperature, can not be under on-line measurement LNG density conditions (under existing technical situation, LNG storage tank is furnished with the measurement apparatus of pressure and temperature, and there is no density measuring equipment), this double liquid level meter systems can not calculate the actual liquid level height of LNG in storage tank in real time, and then also cannot meet the demand that LNG storage tank is made an inventory of goods in a warehouse in the production management that becomes more meticulous.
Summary of the invention
This utility model provides a kind of double liquid level system that can calculate LNG actual liquid level in real time, calculates LNG actual liquid level height and the needs of metering of making an inventory of goods in a warehouse in vacuum insulation storage tank in production management in real time to meet to become more meticulous.
The vacuum insulation storage tank double liquid level meter systems of actual liquid level can be calculated in real time, it is characterised in that:
Vacuum insulation storage tank connects the first differential pressure type level gauge by gas phase pressure measuring valve, and the first differential pressure type level gauge is connected to vacuum insulation storage tank by the first liquid phase pressure measuring valve, the first differential pressure type level gauge two ends the first balanced valve in parallel；
Vacuum insulation storage tank connects the second differential pressure type level gauge by gas phase pressure measuring valve, and the second differential pressure type level gauge is connected to vacuum insulation storage tank by second liquid phase pressure measuring valve, the second differential pressure type level gauge two ends the second balanced valve in parallel；
And there is vertical height difference H between the first liquid phase pressure measuring valve and second liquid phase pressure measuring valve.
Gas phase pressure measuring valve uses two, and respectively with the first differential pressure type level gauge, the second differential pressure type level gauge connect.So He one gas phase pressure measuring valve does not has essential distinction.Use the gas phase pressure measuring valve can be cost-effective.
1, on LNG vacuum insulation storage tank, use the differential pressure type level gauge that 2 sets are separate, a gas phase pressure point can be shared, the liquid phase pressure point of 2 differing heights；
2, a liquid phase pressure point is positioned at tank bottom, and thereon, the two discrepancy in elevation is H in another liquid phase pressure point position.
3, in tank designs manufacture process, H-number is a design load, it is impossible to equal to zero.Accurately measured by storage tank manufacturer is actual, and in storage tank as-built drawing, clearly provide exact value.
4, this utility model can be applicable to vertical or horizontal LNG vacuum insulation storage tank.
Accompanying drawing explanation
Fig. 1 this utility model device schematic diagram (horizontal).
Fig. 2 this utility model device schematic diagram (vertical).
Detailed description of the invention
The double liquid level meter systems of this utility model indication is made up of parts in accompanying drawing 1,2,3,4,5,6,7,8 and the pipeline that is connected.In attached Fig. 1 and 2,1 is vacuum insulation storage tank, and 2 is gas phase pressure measuring valve, and 3 and 5 are respectively the first differential pressure type level gauge L2 and the second differential pressure type level gauge L1, and 4 and 6 is the first balanced valve and the second balanced valve, and 7 and 8 is the first liquid phase pressure measuring valve and second liquid phase pressure measuring valve.Pressure point b and C being respectively connected with 7 and 8, its vertical height difference is H.
Vacuum insulation storage tank 1 connects the first differential pressure type level gauge L2, the first differential pressure type level gauge L2 by gas phase pressure measuring valve and is connected to vacuum insulation storage tank by the first liquid phase pressure measuring valve, the first differential pressure type level gauge L2 two ends the first balanced valve in parallel；
Vacuum insulation storage tank 1 connects the second differential pressure type level gauge L1, the second differential pressure type level gauge L1 by gas phase pressure measuring valve and is connected to vacuum insulation storage tank by second liquid phase pressure measuring valve, the second differential pressure type level gauge L1 two ends the second balanced valve in parallel；
And there is vertical height difference H between the first liquid phase pressure measuring valve and second liquid phase pressure measuring valve.
Further, gas phase pressure measuring valve can use two, and respectively with the first differential pressure type level gauge L2, the second differential pressure type level gauge L1 connect, and form two loops.So He one gas phase pressure measuring valve does not has essential distinction.Use the gas phase pressure measuring valve can be cost-effective.
In tank designs figure, providing vertical height difference H between b and C according to the sensitivity of storage tank actual size and differential pressure levelmeter, H is design load, and H in storage tank manufacture process, should can not accurately measure equal to zero, and be labeled on storage tank as-built drawing.
In actual production process, the measured value of liquidometer L2 and L1 is respectively Δ P2With Δ P1, then the pressure reduction between pressure tap b and c is Δ P3:
ΔP3=Δ P1-ΔP2-------------------(1)
Height between pressure tap b and c is H, thus the real-time level height L of LNG in storage tank can be calculated:
L=(Δ P1/ΔP3)·H------------(2)
According to pressure differential deltap P between b and c3And height difference H, it is also possible to calculate the density value of LNG.According to the geometrical property of LNG tank, with the density of LNG and the liquid level of LNG, the most also can calculate LNG storage capacity in storage tank, meet daily production and make an inventory of goods in a warehouse the needs of metering.
Claims (2)
1. can calculate the vacuum insulation storage tank double liquid level meter systems of actual liquid level in real time, it is characterised in that:
Vacuum insulation storage tank connects the first differential pressure type level gauge, the first differential pressure type liquid by gas phase pressure measuring valve
Position meter is connected to vacuum insulation storage tank by the first liquid phase pressure measuring valve, and the first differential pressure type level gauge two ends are also
Join the first balanced valve；
Vacuum insulation storage tank connects the second differential pressure type level gauge, the second differential pressure type liquid by gas phase pressure measuring valve
Position meter is connected to vacuum insulation storage tank by second liquid phase pressure measuring valve, and the second differential pressure type level gauge two ends are also
Join the second balanced valve；
And there is vertical height difference H between the first liquid phase pressure measuring valve and second liquid phase pressure measuring valve.
The vacuum insulation storage tank biliquid that can calculate actual liquid level in real time the most according to claim 1
Position meter systems, it is characterised in that:
Gas phase pressure measuring valve uses two, respectively with the first differential pressure type level gauge, the second differential pressure type level gauge
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620224718.3U CN205640226U (en) | 2016-03-20 | 2016-03-20 | Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620224718.3U CN205640226U (en) | 2016-03-20 | 2016-03-20 | Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205640226U true CN205640226U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620224718.3U Active CN205640226U (en) | 2016-03-20 | 2016-03-20 | Can calculate two level gauge systems of high vacuum insulation storage tank of actual liquid level in real time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442206A (en) * | 2018-12-21 | 2019-03-08 | 张家港富瑞深冷科技有限公司 | A kind of vacuum insulation deep cooling pressure vessel |
-
2016
- 2016-03-20 CN CN201620224718.3U patent/CN205640226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442206A (en) * | 2018-12-21 | 2019-03-08 | 张家港富瑞深冷科技有限公司 | A kind of vacuum insulation deep cooling pressure vessel |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191128 Granted publication date: 20161012 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221128 Granted publication date: 20161012 |