CN107270998A - Fuel-quantity transducer and fuel tank - Google Patents
Fuel-quantity transducer and fuel tank Download PDFInfo
- Publication number
- CN107270998A CN107270998A CN201710361256.9A CN201710361256A CN107270998A CN 107270998 A CN107270998 A CN 107270998A CN 201710361256 A CN201710361256 A CN 201710361256A CN 107270998 A CN107270998 A CN 107270998A
- Authority
- CN
- China
- Prior art keywords
- fuel
- quantity transducer
- receiving portion
- pipe sleeve
- folding line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Abstract
The present invention provides a kind of fuel-quantity transducer and fuel tank, the fuel-quantity transducer includes electrode assemblie and is connected to the end-cap assembly and insulation assembly at the electrode assemblie two ends, the electrode assemblie includes pipe sleeve and is contained in be parallel to each other two battery lead plates of the pipe sleeve, and the casing surface is provided with least one first folding line.Purposefully design folding line structure in the pipe sleeve outer surface of the present invention, fuel-quantity transducer partial points intensity can be reduced, in case of emergency by external force effect fuel-quantity transducer passive measure can be taken to realize self-destroying function, and then fuel-quantity transducer body fuel leakage caused by self structure reason is prevented, trigger bigger accident.
Description
Technical field
The present invention relates to fuel-quantity transducer field, particularly a kind of fuel-quantity transducer and fuel tank.
Background technology
Capacitor-type Fuel Quantity Sensor compares traditional float type oil quantity sensor in the prior art, eliminates mechanical transmissioning machine
Structure, compact conformation, small volume, use time are longer, precision is increased substantially, and the operation principle of capacitance type sensor is basis
Cylindrical shape capacitor principle is operated, and capacitor is made up of the concentric cylinder pole plate inner and outer electrodes of two insulation,
When the electrolyte that dielectric constant is e is filled between two, the capacitance between two cylinders is that L is two in C=2 π eL/lnD/d, formula
Cylinder overlaps the length of part；D is the diameter of outside electrode；D is the diameter of inner cylinder electrode；E is situated between normal for the electricity of intermediate medium
Number.D, d, e are basically unchanged in actually measurement, therefore measure the height that C may know that liquid level.
Fuel tank on aircraft is all built-in with fuel-quantity transducer, and fuel-quantity transducer uses capacitance type sensor.When aircraft occurs
Dangerous situation, when crashing, fuel tank is easily deformed upon because of crash, and fuel-quantity transducer can be to oil because of its own structure and mounting means
Quantity sensor produces two-way pressure, if fuel-quantity transducer bulk strength is high, it is not easy to damage, and then can pierce through fuel tank, cause
Aviation Fuel leaks, and in turn results in the fire dangerous situation caused by dangerous situation.
The content of the invention
The main object of the present invention is to provide a kind of fuel-quantity transducer and fuel tank, it is intended to reduce fuel-quantity transducer intensity, prevents
Only fuel-quantity transducer pierces through fuel tank, is leaked initiation accident to prevent fuel oil.
To achieve the above object, fuel-quantity transducer proposed by the present invention includes electrode assemblie and is connected to the electrode
The end-cap assembly and insulation assembly at component two ends, the electrode assemblie includes pipe sleeve and is contained in being parallel to each other for the pipe sleeve
Two battery lead plates, the casing surface is provided with least one first folding line.
It is preferred that, the pipe sleeve includes electromagnetic shielding sheath and is sheathed on the protective case of the electromagnetic shielding sheath, described
It is electromagnetically shielded jacket surface and is provided with least one second folding line, correspondence second folding line in the protective case surface is provided with least 1 the
Three folding lines.
It is preferred that, the end-cap assembly includes end cap and is covered on the cover plate of described end cap one end, and the cover internal is set
There are insulating trip, pcb board and sensor, the two ends of the sensor are connected with the insulating trip and the pcb board respectively, it is described exhausted
Embolium is connected with the battery lead plate and the pipe sleeve.
It is preferred that, the end cap includes the first receiving portion and the second receiving portion, and first receiving portion is held with described second
Portion is received in angle setting, the pcb board is contained in first receiving portion, and the cover plate is covered on first receiving portion,
The insulating trip, the sensor are respectively accommodated in second receiving portion.
It is preferred that, second receiving portion is provided with two grooves, and one end of each battery lead plate is contained in a groove.
It is preferred that, the protective case is provided with shielded joint away from described insulation assembly one end, and the shielded joint part holds
It is contained in second receiving portion.
It is preferred that, the insulation assembly includes lower pile crown and is contained in the pad of lower pile head, and lower pile headgear is set
In the one end of the protective case away from the end-cap assembly.
It is preferred that, provided with two mounting grooves in lower pile head, the one end of each battery lead plate away from the end-cap assembly holds
It is contained in a mounting groove.
It is preferred that, lower pile head is provided with multiple first through hole, and the protective case is away from end-cap assembly one end provided with multiple
Second through hole, the first through hole is connected with second through hole.
The present invention also provides a kind of fuel tank, and it includes above-described fuel-quantity transducer, and the fuel tank top is provided with oil-feed
Hole, the end-cap assembly is connected with the fuel feed hole.
Pipe sleeve is set folding line structure, drop by technical solution of the present invention by using fuel-quantity transducer in inside aircraft fuel tanks
Low pipe sleeve intensity, outer masterpiece be used for fuel tank when, fuel-quantity transducer by out-of-balance force acted on can be quickly self-destruction fracture,
Avoid, because sensor pierces through fuel tank, causing Aviation Fuel to leak, in turn resulting in the fire dangerous situation caused by dangerous situation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the overall structure diagram of one embodiment of the invention fuel-quantity transducer；
Fig. 2 is the configuration schematic diagram of fuel-quantity transducer in Fig. 1；
Fig. 3 is the cross-sectional view in Fig. 1 along A-A faces；
Fig. 4 is the structural representation of end cap in Fig. 1；
Fig. 5 is the structural representation of insulation assembly in Fig. 1；
Fig. 6 is the cross-sectional view of pipe sleeve in Fig. 1；
Fig. 7 is the structural representation that one embodiment of the invention fuel-quantity transducer is connected with fuel tank；
Fig. 8 is Fig. 7 overlooking the structure diagram.
Drawing reference numeral explanation：
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if should
When particular pose changes, then directionality indicates also correspondingly therewith to change.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should be interpreted broadly,
For example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can be mechanically connect or
Electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the connection or two of two element internals
The interaction relationship of individual element, unless otherwise clear and definite restriction.For the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, the technical side between each embodiment
Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme
It will be understood that the combination of this technical scheme is not present, also not in the guarantor of application claims when appearance is conflicting or can not realize
Within the scope of shield.
The present invention proposes a kind of fuel-quantity transducer 100, and the fuel-quantity transducer 100 is used for the level height for detecting fuel tank 200,
And provide oil level signal to outer testing system.
Fig. 1 be refer to Fig. 7, a kind of fuel-quantity transducer 100 proposed by the present invention, the oil mass of fuel-quantity transducer 100 sensing
Device 100 includes electrode assemblie 20 and is connected to the end-cap assembly 40 and insulation assembly 60 at the two ends of electrode assemblie 20, institute
Stating electrode assemblie 20 includes pipe sleeve 22 and be parallel to each other two battery lead plates 21 for being contained in the pipe sleeve 22, the table of pipe sleeve 22
Face is provided with least one first folding line 23.
Wherein, two battery lead plates 21 are set in parallel in inside end-cap assembly 40, the two ends of battery lead plate 21 respectively with end cap group
Part 40 and insulation assembly 60 are connected, and insulation assembly 60 is used to battery lead plate 21 being fixed on the positioning, while playing insulating effect, are prevented
Only fuel-quantity transducer 100 and extraneous electric impact capacitance, cause test data inaccurate.The surface of pipe sleeve 22 is provided with least 1 the
One folding line 23, it is possible to understand that, pipe sleeve 22 can also offer at least two first folding lines 23, and at least two first folding lines 23 can be with
It is to be uniformly distributed or uneven distribution, being uniformly distributed certainly can be easier to make fuel-quantity transducer in the presence of external force
100 fracture, and the first folding line 23 on the preferred pipe sleeve 22 of the present embodiment is two, and is each uniformly distributed on pipe sleeve 22, first
Folding line 23 can be the arcuate structure of interruption, or closing circular configuration, the circular configuration of closing can reach more preferable folding
Disconnected effect, the folding line structure is formed using method for turning, i.e. the operation principle of turnery processing is that workpiece rotation, lathe tool exists
Make the machining of straight line or curve movement in plane.Turning is general to be carried out on lathe, the inside and outside cylinder to process workpiece
Face, end face, circular conical surface, forming face and screw thread etc..Inside and outside turning during the face of cylinder, direction of the lathe tool edge parallel to workpiece rotary shaft line
Motion.When turning end or cut-out workpiece, direction horizontal movement of the lathe tool edge perpendicular to workpiece rotary shaft line.If the fortune of lathe tool
As soon as dynamic rail mark, into oblique angle, can process circular conical surface with workpiece rotary shaft line.The revolving body surface of turning shaping, can be using shaping
Cutter method or point of a knife method of loci.During turning, workpiece drives rotation primary movement by machine tool chief axis；The lathe tool being clamped on knife rest is made
Feed motion.Cutting speed v is the workpiece machining surface and the linear velocity (m/min) at lathe tool contact point of rotation；Cutting depth
Vertical range (millimeter) when being each cutting stroke between workpiece work surface and machined surface, but cutting off and shaping car
Shi Zewei is cut perpendicular to the lathe tool of direction of feed and the contact length (millimeter) of workpiece.The amount of feeding represents car during workpiece every revolution
Displacement (millimeter/turn) of the knife along direction of feed, it is also possible to which the lathe tool amount of feeding per minute (milli m/min) is represented.Use high-speed steel
During lathe tool turning common iron, cutting speed is generally 25~60 ms/min, and carbide-tipped lathe tool is up to 80~200 ms/min；With
Highest cutting speed is up to more than 300 ms/min during coated carbides lathe tool.
Fuel-quantity transducer 100 of the present invention can reduce fuel-quantity transducer 100 innings by setting folding line structure on pipe sleeve 22
Portion's point intensity, in case of emergency can be taken passive measure to realize self-destroying function, Jin Erfang by external force effect fuel-quantity transducer 100
Only the body of fuel-quantity transducer 100 fuel leakage caused by self structure reason, triggers bigger accident.
Fig. 3 is refer to, pipe sleeve 22 includes electromagnetic shielding sheath 220 and is sheathed on the protection of the electromagnetic shielding sheath 220
Set 222, electromagnetic shielding sheath 220 surface is provided with least one second folding line 221, and the surface of protective case 222 correspondence is described
Second folding line 221 is provided with least one the 3rd folding line 223.Traditional fuel-quantity transducer 100 only has protective case 222, increases electromagnetic screen
Covering sheath 220 is used to shield the function of electromagnetic interference, while setting the on electromagnetic shielding sheath 220 and protective case 222 respectively
Two folding lines 221 and the 3rd folding line 223, weaken the bulk strength of fuel-quantity transducer 100.
Fig. 1, Fig. 2 and Fig. 7 are refer to, end-cap assembly 40 includes end cap 41 and is covered on the cover plate of described one end of end cap 41
42, the inside of the end cap 41 is provided with insulating trip 43, pcb board 44 and sensor 45, the two ends of the sensor 45 respectively with it is described
Insulating trip 43 and the pcb board 44 are connected, and the insulating trip 43 is connected with the battery lead plate 21 and the pipe sleeve 22.Further
, end cap 41 includes the first receiving portion 410 and the second receiving portion 411, first receiving portion 410 and second receiving portion
411 are set in angle, and the pcb board 44 is contained in first receiving portion 410, and the cover plate 42 is covered on described first and held
Receive portion 410, the insulating trip 43, the sensor 45 are respectively accommodated in second receiving portion 411.End cap 41 can be integrated
The linear structure of shaping or the bending being made up of the first receiving portion 410 with described second receiving portion, 411 two parts
Structure, when fuel-quantity transducer 100 is installed on fuel tank 200, pipe sleeve 22 and the inwall shape of fuel tank 200 have angle setting, the angle
Size is 90-180 degree, and the shell of fuel tank 200 is extruded by external force, and the design of warp architecture makes pipe sleeve 22 be easier to be made by power
With and be broken off, reach prevent fuel oil leak caused by dangerous situation or pollution.The inside of first receiving portion 410 is provided with plug, for
External detecting system connection, in order to avoid pcb board 44 is corroded by fuel oil, provided with close between the receiving portion 410 of cover plate 42 and first
Seal 47, the sealing ring 47 uses polytetrafluoroethylene (PTFE), and polytetrafluoroethylene (PTFE) has good corrosion resistance characteristic to Aviation Fuel, rises simultaneously
To better seal effect, further, for the ease of the installation of cover plate 42 and end-cap assembly 40, the first receiving portion 410 with
Mounting disc 46 is arranged between second receiving portion 411, mounting disc 46 is provided with mounting hole 460, and mounting hole 460 is matched somebody with somebody with screw 461
Close connection.Wherein sensor 45 is temperature sensor, for detecting the internal fuel temperature of fuel tank 200.
Further, insulation assembly 60 includes lower pile crown 61 and is contained in the pad 62 of lower pile first 61, lower pile
First 61 are sheathed on the one end of the protective case 222 away from the end-cap assembly 40.Protective case 222 is away from the insulation assembly 60 1
End is provided with shielded joint 30, and the shielded joint 30 is partially accommodated in second receiving portion 411.The shielded joint 30 and institute
State the second receiving portion 411 to be threadedly coupled, play stable effect, while facilitate the dismounting of fuel-quantity transducer 100, of pad 62
To positioning, insulating effect.
Further, lower pile crown 61 is provided with multiple first through hole 61a, and the protective case 222 is away from the one end of end-cap assembly 40
Provided with multiple second through hole 222a, the first through hole 61a connects 222a with second through hole.Second through hole 221a and electrode
The inside of component 20 and the ft connection of fuel-quantity transducer 100, the second receiving portion 411 are provided with multiple third through-hole 411a, the 3rd
Inside and the ft connection of fuel-quantity transducer 100 of the through hole 411a with electrode assemblie 20.By setting first through hole 61a, second
Through hole 221a and third through-hole 411a, makes the inside and outside formation pressure of fuel-quantity transducer 100, eliminates fuel oil and enters capacitance sensing
Air drag when inside device, cause Aviation Fuel liquid level that fuel-quantity transducer 100 measures can not in real time with the actual pasta in outside
Synchronous change, prevents test data untrue.
Fig. 4 and Fig. 5 are refer to, the second receiving portion 411 is provided with two grooves 412, and one end of each battery lead plate 21 is contained in
One groove 412.Further, provided with two mounting grooves 63 in lower pile crown 61, each battery lead plate 21 is away from the end-cap assembly 40
One end be contained in a mounting groove 63.By setting groove 412 in end-cap assembly 40, insulation assembly 60 sets mounting groove 63, electricity
The two ends of pole plate 21 are individually fixed in groove 412 and mounting groove 63 so that the overall structure of fuel-quantity transducer 100 is more stablized,
Easy disassembly.
The present invention also provides a kind of fuel tank 200, and the fuel tank 200 includes fuel-quantity transducer 100, the tool of fuel-quantity transducer 100
Body structure is with reference to above-described embodiment, because the fuel-quantity transducer 100 of this fuel tank 200 employs whole skills of above-mentioned all embodiments
Art scheme, therefore all beneficial effects that at least technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
Fig. 7 and Fig. 8 are refer to, the top of the fuel tank 200 is provided with fuel feed hole 50, and the outer wall of fuel feed hole 50 is arranged with flange 51,
End-cap assembly 40 is connected with fuel tank 200 by flange 51.
The operation principle of the fuel-quantity transducer 100, due to the change of the internal fuel oil level of fuel tank 200, causes fuel level sensor
Capacitance variations, it is possible to by the capacitance variations of fuel level sensor, to measure fuel level.
Pipe sleeve outer surface is purposefully designed folding line structure, can reduce oil mass by the present invention by using plate type electrode plate
Sensor partial points intensity, in case of emergency can be taken passive measure to realize self-destroying function by external force effect fuel-quantity transducer,
And then fuel-quantity transducer body fuel leakage caused by self structure reason is prevented, trigger bigger accident.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical fields in the scope of patent protection of the present invention.
Claims (10)
1. a kind of fuel-quantity transducer, it is characterised in that the fuel-quantity transducer includes electrode assemblie and is connected to the electricity
The end-cap assembly and insulation assembly at pole component two ends, the electrode assemblie include pipe sleeve and are contained in being parallel to each other for the pipe sleeve
Two battery lead plates, the casing surface be provided with least one first folding line.
2. fuel-quantity transducer as claimed in claim 1, it is characterised in that the pipe sleeve includes electromagnetic shielding sheath and is sheathed on
The protective case of the electromagnetic shielding sheath, the electromagnetic shielding jacket surface is provided with least one second folding line, the protective case table
Face correspondence second folding line is provided with least one the 3rd folding line.
3. the fuel-quantity transducer as described in any one of claim 1 or 2, it is characterised in that the end-cap assembly include end cap and
The cover plate of described end cap one end is covered on, the cover internal is provided with insulating trip, pcb board and sensor, the two of the sensor
End is connected with the insulating trip and the pcb board respectively, and the insulating trip is connected with the battery lead plate and the pipe sleeve.
4. fuel-quantity transducer as claimed in claim 3, it is characterised in that the end cap includes the first receiving portion and second and accommodated
Portion, first receiving portion is set with second receiving portion in angle, and the pcb board is contained in first receiving portion, and
The cover plate is covered on first receiving portion, and the insulating trip, the sensor are respectively accommodated in second receiving portion.
5. fuel-quantity transducer as claimed in claim 4, it is characterised in that second receiving portion is each provided with two grooves
One end of battery lead plate is contained in a groove.
6. fuel-quantity transducer as claimed in claim 4, it is characterised in that the protective case is set away from described insulation assembly one end
There is shielded joint, the shielded joint is partially accommodated in second receiving portion.
7. fuel-quantity transducer as claimed in claim 2, it is characterised in that the insulation assembly includes lower pile crown and is contained in institute
The pad of lower pile crown is stated, lower pile headgear is located at the one end of the protective case away from the end-cap assembly.
8. fuel-quantity transducer as claimed in claim 7, it is characterised in that each provided with two mounting grooves in lower pile head
The one end of battery lead plate away from the end-cap assembly is contained in a mounting groove.
9. fuel-quantity transducer as claimed in claim 7, it is characterised in that lower pile head is provided with multiple first through hole, described
Protective case is provided with multiple second through holes away from end-cap assembly one end, and the first through hole is connected with second through hole.
10. a kind of fuel tank, including the fuel-quantity transducer as described in any one of claim 1 to 9, it is characterised in that the fuel tank
Top is provided with fuel feed hole, and the end-cap assembly is connected with the fuel feed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361256.9A CN107270998B (en) | 2017-05-19 | 2017-05-19 | Fuel-quantity transducer and fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710361256.9A CN107270998B (en) | 2017-05-19 | 2017-05-19 | Fuel-quantity transducer and fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107270998A true CN107270998A (en) | 2017-10-20 |
| CN107270998B CN107270998B (en) | 2019-11-26 |
Family
ID=60064086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710361256.9A Active CN107270998B (en) | 2017-05-19 | 2017-05-19 | Fuel-quantity transducer and fuel tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN107270998B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104134A (en) * | 1986-12-11 | 1987-09-16 | 上海市崇明县节能设备厂 | Self-chosing indicator for fluid level |
| US20090199635A1 (en) * | 2008-02-08 | 2009-08-13 | Pulstone Technologies, LLC | Method and Apparatus for Sensing Levels of Insoluble Fluids |
| CN202481321U (en) * | 2011-12-20 | 2012-10-10 | 中国直升机设计研究所 | Anti-crash fuel tank of helicopter |
| CN102980630A (en) * | 2012-11-26 | 2013-03-20 | 合肥邦立电子股份有限公司 | Intelligent digital capacitive liquid level sensor |
| CN204388964U (en) * | 2014-11-11 | 2015-06-10 | 深圳市南航电子工业有限公司 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
-
2017
- 2017-05-19 CN CN201710361256.9A patent/CN107270998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104134A (en) * | 1986-12-11 | 1987-09-16 | 上海市崇明县节能设备厂 | Self-chosing indicator for fluid level |
| US20090199635A1 (en) * | 2008-02-08 | 2009-08-13 | Pulstone Technologies, LLC | Method and Apparatus for Sensing Levels of Insoluble Fluids |
| CN202481321U (en) * | 2011-12-20 | 2012-10-10 | 中国直升机设计研究所 | Anti-crash fuel tank of helicopter |
| CN102980630A (en) * | 2012-11-26 | 2013-03-20 | 合肥邦立电子股份有限公司 | Intelligent digital capacitive liquid level sensor |
| CN204388964U (en) * | 2014-11-11 | 2015-06-10 | 深圳市南航电子工业有限公司 | A kind of capacitance-type fuel quantity survey sensor with shield assembly and system |
Non-Patent Citations (2)
| Title |
|---|
| 朱高中: "电容式传感器在液位测量中的应用研究", 《液压与气动》 * |
| 李小明: "电容式汽车油量传感器的研究", 《同济大学学位论文》 * |
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| Publication number | Publication date |
|---|---|
| CN107270998B (en) | 2019-11-26 |
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