CN203561405U - Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder - Google Patents
Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder Download PDFInfo
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- CN203561405U CN203561405U CN201320705902.6U CN201320705902U CN203561405U CN 203561405 U CN203561405 U CN 203561405U CN 201320705902 U CN201320705902 U CN 201320705902U CN 203561405 U CN203561405 U CN 203561405U
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- liquid
- liquid level
- floating drum
- level gauge
- gauge
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- 239000007788 liquid Substances 0.000 title claims abstract description 120
- 239000003949 liquefied natural gas Substances 0.000 title abstract description 31
- 238000007667 floating Methods 0.000 claims abstract description 38
- 239000011888 foil Substances 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 3
- 230000002463 transducing effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 18
- 238000005259 measurement Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 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
- 230000007613 environmental effect Effects 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
- 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
- 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
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- Level Indicators Using A Float (AREA)
Abstract
The utility model provides a liquid indicator and a vehicle-mounted LNG (liquid natural gas) cylinder. The liquid indicator is arranged in a liquid container and comprises a buoy, a strain foil and an output device, wherein the buoyancy force borne by the buoy changes with the change of the level of a liquid in the fluid container; the strain foil is arranged above the buoy in the floating direction and abutted against the buoy; and the output device is connected with the strain foil and used for detecting deformation of the strain foil and outputting a detection result. According to the vehicle-mounted LNG cylinder, the liquid indicator is arranged in the cylinder, and at the same time, the strain foil is used for preventing factors such as external environment interference and the like from influencing measured data, so that a vehicle-mounted LNG fuel quantity can be more reliably and accurately measured.
Description
Technical field
The utility model relates to a kind of liquid level and takes 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, becomes floating type liquid level indicating and is also called heavy trunk level gauge, and when liquid surface lifting, heavy cylinder is soaked in the volume change in liquid, and suffered buoyancy also changes, and makes foil gauge deformation measure liquid level.
On existing market, being applicable to vehicle-mounted LNG(liquid natural gas, liquefied natural gas (LNG)) the profound hypothermia liquid level gauge of gas cylinder is mainly capacitance level gauge.Capacitance level gauge is the principle of the difference in dielectric constant of application of cold temperature LNG liquid and LNG steam, and the electric capacitance change of bringing by gas-liquid ratio difference in survey sensor (sensor is hollow tube-shape) reflects 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; The floating drum of flange bottom is soaked in cryogenic liquid, and the change by buoyancy changes the push-pull force to sensor, measures liquid level.
Vehicle-mounted LNG gas cylinder belongs to Cryo Heat Insulation bottle, singularity due to its making, and the singularity of the liquid gas that fills, require liquid level gauge must there is high reliability, once otherwise break down, vehicle-mounted LNG gas cylinder cannot normally be used, and may keep in repair it hardly, can cause scrapping of LNG gas cylinder thus.Market reaction in actual use capacitance type liquid level in respect of faulty sensor, show the defects such as wrong, LNG vehicle is stopped because being forced to without fuel in the way of travelling, brought very large trouble to the producer and the user that produce LNG automobile.
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, reach by widening with the distance of low temperature liquid level the object not contacting with cryogenic liquid.Due to the diameter restriction of LNG vehicle gas cylinder, this floating type liquid level indicating structure cannot be used in LNG vehicle gas cylinder.The operating mode of LNG vehicle gas cylinder is compared more complicated with low temperature storage tank, floating drum can be subject to the impact of the operating modes such as automobile acceleration, deceleration, upward slope, descending, and current low temperature floating type liquid level indicating more easily damages under these operating modes.
Utility model content
The utility model object 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 the technical matters of ectocine accuracy and poor reliability.
For achieving the above object, the utility model provides a kind of liquid level gauge, is arranged in liquid container, and liquid level gauge comprises: floating drum, and 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 unit, 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 in liquid container, and is 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, and the liquid in liquid 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 position of liquid container, and the first reference level sensor is connected with output unit.
Further, reference level sensor comprises the second reference level sensor, is arranged on the preset liquid level position of liquid container, and the second reference level sensor is connected with output unit.
Further, liquid level gauge also comprises elastic body, and foil gauge sealing is bonded on elastic body.
Further, liquid level gauge also comprises support component, and support component is arranged on liquid container inwall, and elastic body is arranged on support component.
Further, liquid level gauge also comprises connecting rod, and connecting rod is arranged on the top of floating drum, connects with elastic body.
Further, liquid level gauge also comprises fluid level transmitter, and output unit is connected with foil gauge by fluid level transmitter.
The utility model 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 utlity model has following beneficial effect:
Liquid level gauge of the present utility model, by using foil gauge, has prevented the impact of inside and outside boundary environmental change on liquid level gauge measurement data, and it is more accurate, reliable to make to measure.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram according to liquid level gauge of the present utility model.
Reference numeral in accompanying drawing is as follows: 1, foil gauge; 2, elastic body; 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, liquid container; 11, fluid level transmitter; 12, output unit.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, according to liquid level gauge of the present utility model, be arranged in liquid container 10, liquid level gauge comprises: floating drum 4, the buoyancy that floating drum 4 is subject to changes with the variation of liquid container 10 interior liquid levels; Foil gauge 1, be arranged on floating drum 4 unsteady direction top and connect with floating drum 4; Output unit 12, is connected with foil gauge 1, shows liquid level.When in gas cylinder, liquid level changes, the buoyancy variation that floating drum 4 is subject to is delivered on elastic body 2 by connecting rod 3, make elastic body and be bonded in foil gauge 1 deformation on elastic body, then change and export liquid level variable signal to output unit 12 by fluid level transmitter 11 reception signals.The foil gauge that liquid level gauge of the present utility model seals by use, liquid level gauge can be contacted with liquid level, reduced the volume of liquid level gauge, used foil gauge to prevent the impact of inside and outside boundary environment on the measurement data of liquid level gauge simultaneously, 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.On vertical guide 5 in figure, there is steel ball to reduce the contact friction force of vertical guide 5 and floating drum 4.Vertical guide 5 is fixed on the liquid container 10 under floating drum 4, 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, and the liquid in liquid container 10 sends transducing signal when concordant with level altitude position.Comprise the first reference level sensor 6, be arranged on the centre position of liquid container 10, the first reference level sensor 6 is connected with output unit 12.Liquid level gauge also comprises the second reference level sensor 7, is arranged on the position of liquid container 10 overall heights 1/10th, and the second reference level sensor 7 is connected with output unit 12.The first reference level sensor 6, the second reference level sensor 7 are add-on assemble, also can use separately or remove the normal work that does not affect liquid level gauge.Vertically half position of the upper position liquid container overall height of guide 5 is provided with the first reference level sensor 6, bottle interior LNG liquid can be detected and arrive half, makes liquid level gauge self-calibration.Vertically 10% position of the bottom liquid container overall height of guide 5 is provided with the second reference level sensor 7, in the time of can LNG liquid arrives 10% in bottle, 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, and elastic body 2 is 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 elastic body 2.Connecting rod 3 connects with the end of elastic body 2.One end of elastic body 2 is connected with liquid container 10 by support component 8, is fixed on the top of liquid container 10, and 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; Elastic body 2, foil gauge 1 seal bond is on elastic body 2, and elastic body 2 is tabular elastic body.What preferably, the present embodiment was hit by a bullet that gonosome 2 selects is that flat rectangular shape elastic body is tabular elastic body.The utility model also can be selected difform foil gauge and elastic body.
Referring to Fig. 1, liquid level gauge also comprises fluid level transmitter 11, and output unit 12 is connected with foil gauge 1 by fluid level transmitter 11.Fluid level transmitter 11 is connected by adiabatic wire 9 with foil gauge 1.Floating drum 4 is stainless steel cylinder, and the buoyancy that floating drum 4 is subject to acts on elastic body 2 by connecting rod 3, makes foil gauge 1 deformation.Deformation signal is by adiabatic wire 9 output signals to fluid level transmitter 11, then input-output unit 12 shows liquid levels.
The utility model 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 utility model the above embodiments have realized following technique effect:
Liquid level gauge of the present utility model sinks core structure by use, uses strain measurement simultaneously, and simple in structure, reliability is high, has prevented the impact of inside and outside boundary disturbing factor on liquid level gauge measurement data, makes to measure more reliable, accurately.The utility model can solve the problem of capacitance level gauge reliability, poor accuracy on vehicle-mounted LNG gas cylinder.Than existing floating type liquid level indicating, simple in structure, reliability is high, and the scope of application is wider.The utility model has also solved LNG vehicle this significant problem of fuel measurement fault that takes place frequently, and can save many extra spendings for vehicle-mounted LNG gas cylinder is used client.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
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 unit (12), is connected with described foil gauge (1), detects deformation the output detections result of described foil gauge (1).
2. liquid level gauge according to claim 1, it is characterized in that, also comprise the vertical guide (5) that prevents that described floating drum (4) from swinging, described vertical guide (5) is fixedly installed in described liquid container (10), and is arranged on the outside of described floating drum (4).
3. liquid level gauge according to claim 1, it is characterized in that, also comprise reference level sensor, be arranged on the level altitude position in described liquid container (10), the liquid in described liquid container (10) sends transducing signal when concordant with described level altitude position.
4. liquid level gauge according to claim 3, it is characterized in that, reference level sensor comprises the first reference level sensor (6), is arranged on the default middle liquid level position of described liquid container (10), and described the first reference level sensor (6) is connected with described output unit (12).
5. liquid level gauge according to claim 3, it is characterized in that, reference level sensor comprises the second reference level sensor (7), is arranged on the preset liquid level position of described liquid container (10), and described the second reference level sensor (7) is connected with described output unit (12).
6. liquid level gauge according to claim 1, is characterized in that, also comprises elastic body (2), and described foil gauge (1) sealing is bonded on described elastic body (2).
7. liquid level gauge according to claim 6, is characterized in that, also comprises support component (8), and described support component (8) is arranged on described liquid container (10) inwall, and described elastic body (2) is arranged on described support component (8).
8. liquid level gauge according to claim 6, is characterized in that, also comprises connecting rod (3), and described connecting rod (3) is arranged on the top of described floating drum (4), connects with described elastic body (2).
9. liquid level gauge according to claim 1, is characterized in that, also comprises fluid level transmitter (11), and described output unit (12) is connected with described foil gauge (1) by described fluid level transmitter (11).
10. 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 the liquid level gauge described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705902.6U CN203561405U (en) | 2013-11-08 | 2013-11-08 | Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705902.6U CN203561405U (en) | 2013-11-08 | 2013-11-08 | Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561405U true CN203561405U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320705902.6U Expired - Lifetime CN203561405U (en) | 2013-11-08 | 2013-11-08 | Liquid indicator and vehicle-mounted LNG (liquid natural gas) cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575365A (en) * | 2013-11-08 | 2014-02-12 | 北京亿华通科技有限公司 | Liquidometer and vehicle-mounted LNG gas bottle |
-
2013
- 2013-11-08 CN CN201320705902.6U patent/CN203561405U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575365A (en) * | 2013-11-08 | 2014-02-12 | 北京亿华通科技有限公司 | Liquidometer and vehicle-mounted LNG gas bottle |
| CN103575365B (en) * | 2013-11-08 | 2016-05-11 | 北京亿华通科技有限公司 | Liquid level is taken into account vehicle-mounted LNG gas cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
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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| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |