CN103575365B - Liquid level is taken into account vehicle-mounted LNG gas cylinder - Google Patents
Liquid level is taken into account vehicle-mounted LNG gas cylinder Download PDFInfo
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- CN103575365B CN103575365B CN201310554270.2A CN201310554270A CN103575365B CN 103575365 B CN103575365 B CN 103575365B CN 201310554270 A CN201310554270 A CN 201310554270A CN 103575365 B CN103575365 B CN 103575365B
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- 239000007788 liquid Substances 0.000 title claims abstract description 120
- 238000007667 floating Methods 0.000 claims abstract description 41
- 239000011888 foil Substances 0.000 claims abstract description 27
- 229920001971 elastomer Polymers 0.000 claims description 25
- 239000000806 elastomer Substances 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 10
- 230000002463 transducing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003949 liquefied natural gas Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 18
- 230000008859 change Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- UAJUXJSXCLUTNU-UHFFFAOYSA-N pranlukast Chemical compound C=1C=C(OCCCCC=2C=CC=CC=2)C=CC=1C(=O)NC(C=1)=CC=C(C(C=2)=O)C=1OC=2C=1N=NNN=1 UAJUXJSXCLUTNU-UHFFFAOYSA-N 0.000 description 1
- 229960004583 pranlukast Drugs 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention provides a kind of liquid level and take into account vehicle-mounted LNG gas cylinder. According to liquid level gauge of the present invention, be arranged in liquid container, liquid level gauge comprises: floating drum, the buoyancy that floating drum is subject to changes with the variation of liquid level in liquid container; Foil gauge, be arranged on floating drum unsteady direction top and connect with floating drum; Output device, is connected with foil gauge, detects deformation the output detections result of foil gauge. According to vehicle-mounted LNG gas cylinder of the present invention, in gas cylinder, be provided with liquid level gauge, liquid level is counted aforesaid liquid level gauge. Liquid level gauge of the present invention, by using foil gauge, has reduced the volume of liquid level gauge, uses foil gauge to prevent the impact of the measurement data of the factors such as external environmental interference on liquid level gauge simultaneously, makes the measurement of vehicle-mounted LNG fuel quantity more reliable, accurate.
Description
Technical field
The present invention relates to a kind of liquid level and take into account vehicle-mounted LNG gas cylinder.
Background technology
Floating type liquid level indicating comprises permanent floatage-type and becomes two kinds of floatage-types, and become floating type liquid level indicating and be also called heavy trunk level gauge, whenWhen liquid surface lifting, heavy cylinder is soaked in the Volume Changes in liquid, and suffered buoyancy also changes, and makes foil gauge deformation measure liquidPosition.
On existing market, being applicable to vehicle-mounted LNG(liquidnaturalgas, liquefied natural gas) the profound hypothermia liquid level gauge of gas cylinder is mainlyCapacitance level gauge. Capacitance level gauge is the principle of the difference in dielectric constant of application of cold temperature LNG liquid and LNG steam, logicalCross gas-liquid ratio difference is brought in measuring transducer (sensor is hollow tube-shape) electric capacitance change and reflect the variation of liquid level.Capacitance level gauge is affected by magnetic fields huge, and only tens of milli teslas magnetic field just can produce the false liquid level signal of tens centimetres.
Existing low temperature buoyancy levelmeter structure, its flange top is push-pull force sensor, outside being positioned at low-temperature storage tank; Under flangeThe floating drum of portion is soaked in cryogenic liquid, changes the push-pull force to sensor by the change of buoyancy, measures liquid level.
Vehicle-mounted LNG gas cylinder belongs to Cryo Heat Insulation bottle, due to the particularity of its making, and the particularity of the liquid gas that fills,Ask liquid level gauge must there is high reliability, once otherwise break down, vehicle-mounted LNG gas cylinder cannot normally use, andMay keep in repair it hardly, can cause thus scrapping of LNG gas cylinder. Market reaction is condenser type in actual useLiquid level in respect of faulty sensor, show the defects such as wrong, LNG vehicle is stopped because being forced to without fuel travelling in way, give and produceThe producer of LNG automobile and user have brought very large trouble.
The low temperature floating type liquid level indicating having at present, the parts such as the push-pull force sensor of its design, anti-goods of furniture for display rather than for use, by widening and low temperatureThe distance of liquid level reaches the object not contacting with cryogenic liquid. Due to the diameter restriction of LNG vehicle gas cylinder, this floating type liquid levelMeter structure cannot be used in LNG vehicle gas cylinder. The operating mode of LNG vehicle gas cylinder is more complicated compared with low temperature storage tank, floating drum meetingBe subject to the impact of the operating modes such as automobile acceleration, deceleration, upward slope, descending, current low temperature floating type liquid level indicating under these operating modes moreEasily damage.
Summary of the invention
The object of the invention is to provide a kind of liquid level to take into account vehicle-mounted LNG gas cylinder, to solve existing liquid level gauge easily by ectocine standardThe really technical problem of property and poor reliability.
For achieving the above object, the invention provides a kind of liquid level gauge, be arranged in liquid container, liquid level gauge comprises: floating drum,The buoyancy that floating drum is subject to changes with the variation of liquid level in liquid container; Foil gauge, be arranged on floating drum unsteady direction top alsoConnect with floating drum; Output device, is connected with foil gauge, detects deformation the output detections result of foil gauge.
Further, liquid level gauge also comprises the vertical guide that prevents that floating drum from swinging, and vertically guide is fixedly installed on liquid containerIn, and be arranged on the outside of floating drum.
Further, liquid level gauge also comprises reference level sensor, is arranged on the level altitude position in liquid container, at liquidLiquid in body container sends transducing signal when concordant with level altitude position.
Further, reference level sensor comprises the first reference level sensor, is arranged on the default middle liquid level of liquid containerPosition, the first reference level sensor is connected with output device.
Further, reference level sensor comprises the second reference level sensor, is arranged on the preset liquid level position of liquid containerPut, the second reference level sensor is connected with output device.
Further, liquid level gauge also comprises elastomer, and foil gauge sealing is bonded on elastomer.
Further, liquid level gauge also comprises support component, and support component is arranged on liquid container inwall, and elastomer is arranged onOn support component.
Further, liquid level gauge also comprises connecting rod, and connecting rod is arranged on the top of floating drum, connects with elastomer.
Further, liquid level gauge also comprises fluid level transmitter, and output device is connected with foil gauge by fluid level transmitter.
The present invention also provides a kind of vehicle-mounted LNG gas cylinder, is provided with liquid level gauge in gas cylinder, and liquid level is counted aforesaid liquid level gauge.
The present invention has following beneficial effect:
Liquid level gauge of the present invention, by using foil gauge, has prevented the impact of inside and outside boundary environmental change on liquid level gauge measurement data,Make to measure more accurately, reliably.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage. BelowWith reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing of a part that forms the application is used to provide a further understanding of the present invention, illustrative examples of the present invention andIts explanation is used for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the schematic diagram according to liquid level gauge of the present invention.
Reference numeral in accompanying drawing is as follows: 1, foil gauge; 2, elastomer; 3, connecting rod; 4, floating drum; 5, vertical guide;6, the first reference level sensor; 7, the second reference level sensor; 8, support component; 9, adiabatic wire; 10, liquidContainer; 11, fluid level transmitter; 12, output device.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the present invention can be defined by the claims and coverMultitude of different ways implement.
Referring to Fig. 1, according to liquid level gauge of the present invention, be arranged in liquid container 10, liquid level gauge comprises: floating drum 4, floating drum 4The buoyancy being subject to changes with the variation of liquid container 10 interior liquid levels; Foil gauge 1, is arranged on the unsteady direction of floating drum 4Top also connects with floating drum 4; Output device 12, is connected with foil gauge 1, shows liquid level. When in gas cylinder liquid level changeTime, the buoyancy variation that floating drum 4 is subject to is delivered on elastomer 2 by connecting rod 3, makes elastomer and is bonded on elastomerFoil gauge 1 deformation, then receive signal by fluid level transmitter 11 and change and export liquid level variable signal to output device 12. The present inventionThe foil gauge that seals by use of liquid level gauge, liquid level gauge can be contacted with liquid level, reduced the volume of liquid level gauge, make simultaneouslyPrevent the impact of the measurement data of inside and outside boundary environment on liquid level gauge with foil gauge, made to measure more reliable, accurate.
Referring to Fig. 1, liquid level gauge also comprises the vertical guide 5 that prevents that floating drum 4 from swinging, and is arranged on the outside of floating drum 4. In figureVertically on guide 5, there is steel ball to reduce the contact friction force of vertical guide 5 and floating drum 4. Vertically guide 5 is fixed on floating drum 4Under liquid container 10 on, for retraining floating drum 4.
Referring to Fig. 1, liquid level gauge also comprises reference level sensor, is arranged on the level altitude position in liquid container 10,Liquid in liquid container 10 sends transducing signal when concordant with level altitude position. Comprise the first reference level sensor 6, establishPut in the centre position of liquid container 10, the first reference level sensor 6 is connected with output device 12. Liquid level gauge also comprisesThe second reference level sensor 7, is arranged on the position of liquid container 10 total heights 1/10th, the second reference level sensor 7Be connected with output device 12. The first reference level sensor 6, the second reference level sensor 7 are add-on assemble, also canUse separately or remove the normal work that does not affect liquid level gauge. The vertically half of the upper position liquid container total height of guide 5Position is provided with the first reference level sensor 6, can detect that bottle interior LNG liquid arrives half, makes liquid level gauge self-calibration.Vertically 10% position of the bottom liquid container total height of guide 5 is provided with the second reference level sensor 7, can be in bottleWhen arriving 10%, LNG liquid to fluid level transmitter 11 output signals, display is reported to the police.
Referring to Fig. 1, liquid level gauge also comprises support component 8, and support component 8 is arranged on liquid container 10 inwalls elastomer 2Be arranged on support component 8.
Referring to Fig. 1, liquid level gauge also comprises connecting rod 3, and connecting rod 3 is arranged on the top of floating drum 4, connects with elastomer 2. Connecting rod3 connect with the end of elastomer 2. One end of elastomer 2 is connected with liquid container 10 by support component 8, is fixed on liquidThe top of body container 10, one end is connected with the top of connecting rod 3 in addition, and the bottom of connecting rod 3 is connected with the top of floating drum 4; ElasticityBody 2, foil gauge 1 seal bond is on elastomer 2, and elastomer 2 is tabular elastomer. Preferably, the present embodiment gonosome of being hit by a bullet2 what select is that flat rectangular shape elastomer is tabular elastomer. The present invention also can select difform foil gauge and elastomer.
Referring to Fig. 1, liquid level gauge also comprises fluid level transmitter 11, and output device 12 is connected with foil gauge 1 by fluid level transmitter 11Connect. Fluid level transmitter 11 is connected by adiabatic wire 9 with foil gauge 1. Floating drum 4 is stainless steel cylinder, and floating drum 4 is subject toBuoyancy acts on elastomer 2 by connecting rod 3, makes foil gauge 1 deformation. Deformation signal by adiabatic wire 9 output signals to liquidPosition transmitter 11, then input/output unit 12 shows liquid level.
The present invention also provides a kind of vehicle-mounted LNG gas cylinder, is provided with aforesaid liquid level gauge in gas cylinder.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
Liquid level gauge of the present invention sinks core structure by use, uses strain measurement simultaneously, and simple in structure, reliability is high, anti-Stop the impact of inside and outside boundary disturbing factor on liquid level gauge measurement data, made to measure more reliable, accurate. The present invention can solve electricityThe problem of appearance formula liquid level gauge reliability, poor accuracy on vehicle-mounted LNG gas cylinder. Than existing floating type liquid level indicating, structureSimply, reliability is high, and the scope of application is wider. The present invention has also solved LNG vehicle this significant problem of fuel measurement fault that takes place frequently,Can save many extra spendings for vehicle-mounted LNG gas cylinder uses client.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art, the present invention can have various modifications and variations. Within the spirit and principles in the present invention all, any amendment of doing, etc.With replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a liquid level gauge, is arranged in liquid container (10), it is characterized in that, described liquid level gauge comprises:
Floating drum (4), the position of described floating drum (4) changes with the variation of the interior liquid level of described liquid container (10);
Foil gauge (1), be arranged on described floating drum (4) unsteady direction top and connect with described floating drum (4);
Output device (12), is connected with described foil gauge (1), detects deformation the output inspection of described foil gauge (1)Survey result;
Elastomer (2), described foil gauge (1) sealing is bonded on described elastomer (2);
Support component (8), described support component (8), is arranged on described liquid container (10) inwall described elasticityBody (2) is arranged on described support component (8);
Connecting rod (3), described connecting rod (3) is arranged on the top of described floating drum (4), connects with described elastomer (2);
Wherein, described elastomer (12) is tabular elastomer, and one end of described elastomer (2) is by described support component(8) be connected with described liquid container (10), the other end of described elastomer (2) is connected with described connecting rod (3).
2. liquid level gauge according to claim 1, is characterized in that, also comprises the vertical guiding that prevents that described floating drum (4) from swingingPart (5), described vertical guide (5) is fixedly installed in described liquid container (10), and is arranged on described floating drum (4)Outside.
3. liquid level gauge according to claim 1, is characterized in that, also comprises reference level sensor, is arranged on described liquidLevel altitude position, the liquid in described liquid container (10) and described level altitude position in container (10)When concordant, send transducing signal.
4. liquid level gauge according to claim 3, is characterized in that, reference level sensor comprises the first reference level sensor(6), be arranged on the default middle liquid level position of described liquid container (10), described the first reference level sensor (6)Be connected with described output device (12).
5. liquid level gauge according to claim 3, is characterized in that, reference level sensor comprises the second reference level sensor(7), be arranged on the preset liquid level position of described liquid container (10), described the second reference level sensor (7) withDescribed output device (12) is connected.
6. liquid level gauge according to claim 1, is characterized in that, also comprises fluid level transmitter (11), described output device (12)Be connected with described foil gauge (1) by described fluid level transmitter (11).
7. a vehicle-mounted LNG gas cylinder, is provided with liquid level gauge in described gas cylinder, it is characterized in that, described liquid level is counted claim 1To the liquid level gauge described in any one in 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554270.2A CN103575365B (en) | 2013-11-08 | 2013-11-08 | Liquid level is taken into account vehicle-mounted LNG gas cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310554270.2A CN103575365B (en) | 2013-11-08 | 2013-11-08 | Liquid level is taken into account vehicle-mounted LNG gas cylinder |
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| CN103575365A CN103575365A (en) | 2014-02-12 |
| CN103575365B true CN103575365B (en) | 2016-05-11 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104394225A (en) * | 2014-12-02 | 2015-03-04 | 上海雷尼威尔技术有限公司 | System and method for testing remote communication of vehicle LNG gas bottle |
| FR3036792B1 (en) * | 2015-05-29 | 2017-06-30 | Snecma | OIL LEVEL SENSOR |
| CN110285320B (en) * | 2019-07-03 | 2021-06-04 | 中车西安车辆有限公司 | LNG gas pitcher atmospheric pressure test device for ore car |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2484212Y (en) * | 2001-06-20 | 2002-04-03 | 汤义成 | Vehicle fuel-tank level sensor |
| CN202008390U (en) * | 2011-02-17 | 2011-10-12 | 安徽淮化股份有限公司 | Magnetic flip liquid level meter |
| CN203561405U (en) * | 2013-11-08 | 2014-04-23 | 北京亿华通科技有限公司 | Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5318007B2 (en) * | 2010-03-18 | 2013-10-16 | 中国電力株式会社 | LNG tank alarm device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2484212Y (en) * | 2001-06-20 | 2002-04-03 | 汤义成 | Vehicle fuel-tank level sensor |
| CN202008390U (en) * | 2011-02-17 | 2011-10-12 | 安徽淮化股份有限公司 | Magnetic flip liquid level meter |
| CN203561405U (en) * | 2013-11-08 | 2014-04-23 | 北京亿华通科技有限公司 | Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder |
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Address after: 100084, C701, room 7, building B-6, building No. 66, Zhongguancun Dongsheng science and Technology Park, Dongsheng Road, Haidian District, Beijing, Patentee after: BEIJING SINOHYTEC CO., LTD. Address before: 100084 room 4500, liquid crystal building, Tsinghua University, Beijing, Haidian District Patentee before: Beijing SinoHytec Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Liquidometer and vehicle-mounted LNG gas bottle Effective date of registration: 20170609 Granted publication date: 20160511 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: BEIJING SINOHYTEC CO., LTD. Registration number: 2017990000477 |
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Date of cancellation: 20180914 Granted publication date: 20160511 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: BEIJING SINOHYTEC CO., LTD. Registration number: 2017990000477 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Liquidometer and vehicle-mounted LNG gas bottle Effective date of registration: 20181115 Granted publication date: 20160511 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: BEIJING SINOHYTEC CO., LTD. Registration number: 2018990001024 |
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Date of cancellation: 20191230 Granted publication date: 20160511 Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee Pledgor: BEIJING SINOHYTEC CO., LTD. Registration number: 2018990001024 |