CN1979125A - Concentration detecting device and fuel feeding channel with same - Google Patents
Concentration detecting device and fuel feeding channel with same Download PDFInfo
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- CN1979125A CN1979125A CNA2005101242780A CN200510124278A CN1979125A CN 1979125 A CN1979125 A CN 1979125A CN A2005101242780 A CNA2005101242780 A CN A2005101242780A CN 200510124278 A CN200510124278 A CN 200510124278A CN 1979125 A CN1979125 A CN 1979125A
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- concentration monitoring
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Abstract
The invention discloses a thickness detecting device that could test the thickness of fluid fuel in container. It includes a rotating structure, which at least contains three floating objects. The specific gravity of the floating object is less than that of fluid fuel. Thus, the rotating structure could reach to a rest condition under the fluid fuel surface. While the thickness changing, the rotating structure would generate a certain angle that could be calculated to gain the thickness of the fluid fuel.
Description
Technical field
The present invention relates to a kind of concentration monitoring device, relate in particular to a kind of arrangement for detecting in order to the employed liquid fuel concentration of detecting fuel cell.
Background technology
Fuel cell is a kind of chemical energy that will be stored in fuel and the oxygenant is converted into electric energy by electrode reaction a Blast Furnace Top Gas Recovery Turbine Unit (TRT).The kind of fuel cell is quite a lot of, and the mode of classification is also had nothing in common with each other, if distinguished, five kinds of electrolytical fuel cells of difference such as alkaline fuel cell, phosphoric acid fuel cell, Proton Exchange Membrane Fuel Cells, molten carbonate fuel cell, solid-oxide fuel cell are arranged according to the electrolyte property difference.Wherein, Proton Exchange Membrane Fuel Cells comprises so-called DMFC again, is fuel with methyl alcohol directly promptly, and does not need first upgrading to become hydrogen, be to research and develop one of higher technology of energy at present, its application target comprises big power station, electric generators for automobile, portable power etc.
Yet,, in the commercial process of marching toward, all need overcome a problem, the i.e. control of liquid fuel concentration as the liquid fuel battery of this class of DMFC.In theory, if liquid fuel concentration is lower, and the electric power that is produced is just fewer; If liquid fuel concentration is higher, and the electric power that is produced just the more.Therefore, certainly will there be a kind of concentration monitoring device to monitor the concentration of liquid fuel at any time, to guarantee that its concentration maintains a default standard value all the time, so can keep the power supply quality of fuel cell, and electronic product can not sustain damage yet because of the electric power supply of fuel cell is unstable.
Summary of the invention
First purpose of the present invention provides a kind of concentration monitoring device, in order to reflect the concentration of the required liquid fuel of fuel cell at any time.
Second purpose of the present invention provides a kind of fuel feeding channel that is used for liquid fuel battery, is provided with the fuel concentration detecting device device, can reflect the liquid fuel concentration in the fuel feeding channel at any time.
For reaching above-mentioned purpose of the present invention, the invention provides a kind of concentration monitoring device, in order to detect the concentration of liquid fuel in the container, this concentration monitoring device comprises: a rotating mechanism, be positioned under the liquid level of this liquid fuel, and can on X-Y plane, rotate an angle θ, this rotating mechanism comprises: the unsteady object more than at least three, connected to each other and this each unsteady object proportion all is not more than this liquid fuel proportion ρ, those unsteady objects are according to a torque equilibrium equation formula F (θ, ρ)=0, so that this rotating mechanism can be issued to stationary state at the liquid level of this liquid fuel.Make whereby when the concentration of this liquid fuel changes, detect the anglec of rotation θ of this rotating mechanism, (θ ρ)=0 in the hope of this liquid fuel proportion ρ, thereby can converse the concentration of this liquid fuel according to this torque equilibrium equation formula F again.
For making those of ordinary skill in the art understand purpose of the present invention, feature and effect, existing by following specific embodiment, and conjunction with figs., the present invention is described as follows in detail.
Description of drawings
Figure 1A is the side view according to a specific embodiment of concentration monitoring device of the present invention;
Figure 1B is the synoptic diagram of concentration monitoring device under a state of Figure 1A;
Fig. 2 is the synoptic diagram of concentration monitoring device under another state of Figure 1B;
Fig. 3 is the concentration of methanol aqueous solution and the conversion table of comparisons of proportion;
Fig. 4 is the graph of a relation of the anglec of rotation of the liquid fuel concentration of a preferred embodiment of concentration monitoring device of the present invention and rotating mechanism.
The primary clustering symbol description
1 fuel feeding channel
10 housings
100 first inlets
102 second inlets
104 outlets
12 liquid fuels
14 rotating mechanisms
140 first unsteady objects
142 second unsteady objects
144 the 3rd unsteady objects
145 rotation centers
146 connecting rods
Embodiment
Reach technology, means and the effect that predetermined purpose is taked in order to make those of ordinary skill in the art can further understand the present invention, see also following about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, can get one thus gos deep into and concrete understanding, yet appended graphic only for reference and explanation usefulness are provided, be not to be used for the present invention is limited.
At first, please refer to Figure 1A and Figure 1B, Figure 1A is the side view according to a specific embodiment of concentration monitoring device of the present invention.Figure 1B is the synoptic diagram of concentration monitoring device under a state of Figure 1A.In Figure 1A, fuel feeding channel 1 has a housing 10, adopts the hollow container structure, and is used for holding and supplies with the required fuel of a fuel cell, and promptly liquid fuel 12, and liquid fuel 12 can be a methanol aqueous solution.Fuel feeding channel 1 further comprises: first inlet, 100, second inlet 102, outlet 104.First inlet 100 is used for injecting fuel to fuel feeding channel 1.Second inlet 102 is used for injecting aqueous solution to fuel feeding channel 1, with the concentration of dilution fuel.Outlet 104 is used for exporting the inlet (not shown) of fuel to a runner plate of fuel cell.
Concentration monitoring device of the present invention is in order to the concentration of the liquid fuel 12 in the detecting fuel feeding channel 1, this concentration monitoring device comprises a rotating mechanism 14, the liquid level that is positioned at liquid fuel 12 down and have rotation center 145 and can rotate an angle θ (as shown in Figure 2) on X-Y plane.Shown in Figure 1A, rotating mechanism 14 comprises: first unsteady object 140, second unsteady object 142 and the 3rd unsteady object 144, and utilize connecting rod 146 to link each other.Wherein, first unsteady object 140, the second unsteady object 142 and the 3rd unsteady object 144 are by the made spheroid of resistant material, the quality of those unsteady objects is respectively M1, M2, M3, and volume is respectively V1, V2, V3, and the neither proportion ρ greater than liquid fuel 12 of its proportion.Shown in Figure 1B, the barycenter of those unsteady objects and the distance of its rotation center 145 on X-Y plane are respectively L1, L2, L3, and the barycenter of the first unsteady object 140, the barycenter of the second unsteady object 142 and center formed angle on X-Y plane of rotation center 145 are that the barycenter of θ 2, the first unsteady objects 140, barycenter and rotation center 145 formed angle on X-Y plane of the 3rd unsteady object 144 are θ 3.
Fig. 2 is the synoptic diagram of concentration monitoring device under another state of Figure 1B.At this moment, the concentration of liquid fuel 12 changes, because the suffered buoyancy of each unsteady object 140,142,144 also can be along with change, thereby makes rotating mechanism 14 rotate an anglec of rotation θ on X-Y plane.At last, first float object 140, second float object 142 and the 3rd float object 144 will be according to following torque equilibrium equation formula:
(M1-ρ·V1)·L1·cosθ+(M2-ρ·V2)·L2·cos(θ+θ2)+(M3-ρ·V3)·L3·cos(θ+θ3)＝0；
Wherein, M1, M2, M3, V1, V2, V3, L1, L2, L3, θ 2, θ 3 are constants.By above-mentioned torque equilibrium equation formula F (θ, ρ)=0 so that rotating mechanism 14 can be issued to stationary state at the liquid level of liquid fuel 12.In addition, because the anglec of rotation θ of rotating mechanism 14 can only have a correct typical value, therefore necessary according to following discriminant:
[ F (θ, ρ)/ θ]＞0; And determine a θ value, wherein symbol represents partial differential.
By implementing the present invention, so that when the concentration of liquid fuel 12 changes, detect the anglec of rotation θ of rotating mechanism (14), again according to this torque equilibrium equation formula F (θ, ρ)=0 in the hope of the proportion ρ of liquid fuel (12), thereby can converse the concentration of liquid fuel 12.Suppose that liquid fuel 12 is a methanol aqueous solution, just can see through as shown in Figure 3 methanol aqueous solution concentration and the conversion table of comparisons of proportion, converse methanol aqueous solution concentration corresponding to proportion ρ.
Fig. 4 is the graph of a relation of the anglec of rotation θ of the liquid fuel proportion ρ of a preferred embodiment of concentration monitoring device of the present invention and rotating mechanism.The master data of this preferred embodiment is as follows:
M1＝1.86(g)；M2＝1.46(g)；M3＝2.36(g)；V1＝2(cm
3)；V2＝1.6(cm
3)；V3＝2.5(cm
3)；L1＝42(mm)；L2＝41.7(mm)；L3＝43(mm)；θ2＝112.3°；θ3＝206.5°。
As shown in Figure 4, can easily find out the pairing liquid fuel proportion of specific anglec of rotation θ ρ.In addition, when liquid fuel proportion ρ 0.9 to 1 the time, curve is the most precipitous, the anglec of rotation of rotating mechanism (θ) is changed to 30 ° from 60 ° therebetween, middle drop has 100 ° more than nearly.This experimental result means, the concentration monitoring device of this preferred embodiment is particularly suitable for detecting the concentration of proportion ρ between 0.9 to 1 liquid fuel, methanol aqueous solution for example shown in Figure 3 is a typical example, reason is that the concentration monitoring device of this preferred embodiment is quite high in the reaction sensitivity in this proportion interval (0.9～1), when the concentration one of liquid fuel changes, pairing liquid fuel proportion ρ is also along with variation, this moment, observer or observation device can be easy to measure the anglec of rotation θ that this has obvious amplitude, thereby can bring the great convenience of concentration sensing operation of liquid fuel.Certainly, concentration monitoring device of the present invention also can be applied in and adopt other to have the fuel cell of the liquid fuel of different specific weight except can be applicable to methanol aqueous solution simultaneously.
At last, it is as follows to conclude characteristics of the present invention and effect:
1. concentration monitoring device of the present invention is made for more helping, and can preestablish following parameter: V1=V2=V3; L1=L2=L3; θ 2=120 °; θ 3=240 °, and make M1, M2, M3 become a geometric ratio ordered series of numbers (that is M1=rM3; M2=r
2M3), thus concentration monitoring device of the present invention have cheap for manufacturing cost, and easily a large amount of advantage of making.
2. concentration monitoring device of the present invention has splendid reaction sensitivity, so can bring the great convenience of concentration sensing operation of liquid fuel.Therefore, use the fuel feeding channel of the liquid fuel battery of concentration monitoring device of the present invention, itself can have good concentration detecting ability.
Though the present invention with specific embodiment openly as above; but its disclosed specific embodiment is not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; can be used for a variety of modifications and variations; its change of doing all belongs to category of the present invention with retouching, and protection scope of the present invention should be as the criterion with claim.
Claims (23)
1. concentration monitoring device, in order to detect the concentration of the liquid fuel in the container, it is characterized in that: this concentration monitoring device comprises:
One rotating mechanism, the liquid level that is positioned at this liquid fuel down and have a rotation center and rotate an angle θ on X-Y plane, this rotating mechanism comprises:
Unsteady object more than at least three, connected to each other and this each unsteady object proportion is not more than this liquid fuel proportion ρ, those unsteady objects foundation one torque equilibrium equation formula F (θ, ρ)=0, so that this rotating mechanism is issued to stationary state at the liquid level of this liquid fuel;
Make whereby when the concentration of this liquid fuel changes, detect the anglec of rotation θ of this rotating mechanism, (θ ρ)=0 in the hope of this liquid fuel proportion ρ, thereby converses the concentration of this liquid fuel according to this torque equilibrium equation formula F again.
2. concentration monitoring device as claimed in claim 1, it is characterized in that: those unsteady objects comprise: one first unsteady object, one second unsteady object and one the 3rd unsteady object, and the quality of those unsteady objects is respectively M1, M2, M3, the volume of those unsteady objects is respectively V1, V2, V3, the barycenter of those unsteady objects and the distance of this rotation center on X-Y plane are respectively L1, L2, L3, and the barycenter of this first unsteady object, this second barycenter and this rotation center formed angle on X-Y plane that floats object is θ 2, the barycenter of this first unsteady object, the 3rd barycenter and this rotation center formed angle on X-Y plane that floats object is θ 3.
3. concentration monitoring device as claimed in claim 2 is characterized in that: wherein (θ, functional expression ρ) are F (θ, ρ)=(M1-ρ V1) L1cos θ+(M2-ρ V2) L2cos (θ+θ 2)+(M3-ρ V3) L3cos (θ+θ 3) to F.
4. concentration monitoring device as claimed in claim 3 is characterized in that: the anglec of rotation θ of this rotating mechanism according to a discriminant [ F (and θ, ρ)/ θ]＞0 and determine that the symbol in this discriminant represents partial differential.
5. concentration monitoring device as claimed in claim 2 is characterized in that: V1=V2=V3 wherein, and L1=L2=L3, θ 2=120 °, θ 3=240 °, and M1, M2, M3 are a geometric ratio ordered series of numbers.
6. concentration monitoring device as claimed in claim 1 is characterized in that: this unsteady object is a spheroid.
7. concentration monitoring device as claimed in claim 1 is characterized in that: this container is a fuel feeding channel, in order to supply with the required fuel of a fuel cell.
8. concentration monitoring device as claimed in claim 7 is characterized in that: this liquid fuel is a methanol aqueous solution.
9. concentration monitoring device as claimed in claim 8 is characterized in that: this unsteady object is a resistant material.
10. concentration monitoring device as claimed in claim 7 is characterized in that: this fuel feeding channel further comprises one first inlet, in order to inject fuel to this fuel feeding channel.
11. concentration monitoring device as claimed in claim 10 is characterized in that: this fuel feeding channel further comprises one second inlet, in order to inject aqueous solution to this fuel feeding channel.
12. concentration monitoring device as claimed in claim 11 is characterized in that: this fuel feeding channel further comprises an outlet, in order to export the inlet of its fuel to a runner plate of this fuel cell.
13. a fuel feeding channel that is used for liquid fuel battery is characterized in that: comprising:
One housing is the hollow container structure, in order to hold a liquid fuel; And
One concentration monitoring device is positioned at this housing, in order to detect the concentration of this liquid fuel, this concentration monitoring device comprises a rotating mechanism at least, the liquid level that is positioned at this liquid fuel down and have a rotation center and can rotate an angle θ on X-Y plane, wherein this rotating mechanism comprises:
Unsteady object more than at least three, connected to each other and this each unsteady object proportion is not more than this liquid fuel proportion ρ, those unsteady objects foundation one torque equilibrium equation formula F (θ, ρ)=0, so that this rotating mechanism is issued to stationary state at the liquid level of this liquid fuel;
Make whereby when the concentration of this liquid fuel changes, detect the anglec of rotation θ of this rotating mechanism, (θ ρ)=0 in the hope of this liquid fuel proportion ρ, thereby converses the concentration of this liquid fuel according to this torque equilibrium equation formula F again.
14. concentration monitoring device as claimed in claim 13, it is characterized in that: those unsteady objects comprise: one first unsteady object, one second unsteady object and one the 3rd unsteady object, and the quality of those unsteady objects is respectively M1, M2, M3, the volume of those unsteady objects is respectively V1, V2, V3, the barycenter of those unsteady objects and the distance of this rotation center on X-Y plane are respectively L1, L2, L3, and the barycenter of this first unsteady object, this second barycenter and this rotation center formed angle on X-Y plane that floats object is θ 2, the barycenter of this first unsteady object, the 3rd barycenter and this rotation center formed angle on X-Y plane that floats object is θ 3.
15. concentration monitoring device as claimed in claim 14 is characterized in that: wherein (θ, functional expression ρ) are F (θ, ρ)=(M1-ρ V1) L1cos θ+(M2-ρ V2) L2cos (θ+θ 2)+(M3-ρ V3) L3cos (θ+θ 3) to F.
16. concentration monitoring device as claimed in claim 15 is characterized in that: the anglec of rotation θ of this rotating mechanism according to a discriminant [ F (and θ, ρ)/ θ]＞0 and determine that the symbol in this discriminant represents partial differential.
17. concentration monitoring device as claimed in claim 14 is characterized in that: V1=V2=V3 wherein, L1=L2=L3, θ 2=120 °, θ 3=240 °, and M1, M2, M3 are a geometric ratio ordered series of numbers.
18. concentration monitoring device as claimed in claim 13 is characterized in that: this unsteady object is a spheroid.
19. concentration monitoring device as claimed in claim 13 is characterized in that: this liquid fuel is a methanol aqueous solution.
20. concentration monitoring device as claimed in claim 19 is characterized in that: this unsteady object is a resistant material.
21. concentration monitoring device as claimed in claim 13 is characterized in that: this housing further comprises one first inlet, in order to inject this liquid fuel to this fuel feeding channel.
22. concentration monitoring device as claimed in claim 21 is characterized in that: this housing further comprises one second inlet, in order to inject aqueous solution to this fuel feeding channel.
23. concentration monitoring device as claimed in claim 22 is characterized in that: this housing further comprises an outlet, in order to export the inlet of this liquid fuel to a runner plate of this liquid fuel battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101242780A CN1979125A (en) | 2005-11-29 | 2005-11-29 | Concentration detecting device and fuel feeding channel with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101242780A CN1979125A (en) | 2005-11-29 | 2005-11-29 | Concentration detecting device and fuel feeding channel with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1979125A true CN1979125A (en) | 2007-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101242780A Pending CN1979125A (en) | 2005-11-29 | 2005-11-29 | Concentration detecting device and fuel feeding channel with same |
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| Country | Link |
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| CN (1) | CN1979125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398407A (en) * | 2020-03-02 | 2020-07-10 | 上海联芊电子科技有限公司 | Liquid density detection device and method, containing box and equipment |
| CN113324614A (en) * | 2021-05-31 | 2021-08-31 | 三一重机有限公司 | Method and device for measuring liquid level in liquid tank and engineering machinery |
-
2005
- 2005-11-29 CN CNA2005101242780A patent/CN1979125A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398407A (en) * | 2020-03-02 | 2020-07-10 | 上海联芊电子科技有限公司 | Liquid density detection device and method, containing box and equipment |
| CN113324614A (en) * | 2021-05-31 | 2021-08-31 | 三一重机有限公司 | Method and device for measuring liquid level in liquid tank and engineering machinery |
| CN113324614B (en) * | 2021-05-31 | 2023-10-10 | 三一重机有限公司 | Measuring method, measuring device and engineering machinery for liquid level in liquid tank |
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