CN208187963U - One kind is used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument - Google Patents
One kind is used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument Download PDFInfo
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- CN208187963U CN208187963U CN201820468288.9U CN201820468288U CN208187963U CN 208187963 U CN208187963 U CN 208187963U CN 201820468288 U CN201820468288 U CN 201820468288U CN 208187963 U CN208187963 U CN 208187963U
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Abstract
The utility model relates to one kind to be used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument, including hydrogen gas sensor and sample storage room.The hydrogen gas sensor include hollow shell and in shell for detecting the fuel cell module of under test gas concentration, the both ends of the shell are respectively to be connected with sample storage room for the first end into sample to be tested and the second end for entering oxygen, Oil-gas Separation film is provided at the first end, Oil-gas Separation film includes non-porous body membrane and porous supporting body, and wherein porous supporting body is towards fuel cell module.The utility model for the matching used hydrogen detection components long service life of optoacoustic spectroscopy instrument, detection sensitivity is high, selectivity is good, can be applied to hydrogen in the adverse circumstances such as power plant and detect.
Description
Technical field
The utility model relates to hydrogen detection technique fields, are used for and optoacoustic spectroscopy instrument more specifically to one kind
Matching used hydrogen detection components.
Background technique
Optoacoustic spectroscopy is more and more as a kind of novel Gases Dissolved in Transformer Oil on-line monitoring technique
It is applied to oil-filled electric equipment status monitoring field.Multi-analyte immunoassay (for few component principle) had both may be implemented in optoacoustic spectroscopy,
The maintenance (for oil chromatography principle) at scene is greatly reduced again.But the symmetrical molecule as hydrogen can not pass through optoacoustic
The optical principles such as spectrum are detected, it is necessary to be equipped with other effective detection means.At present in industry and optoacoustic spectroscopy is mating makes
There are mainly two types of hydrogen detection techniques, and one is fixed electric potential electroanalysis formula hydrogen gas sensors, and this kind of sensor is with British city
The product of technology is representative；Another kind of is macromolecule membrane type hydrogen gas sensor.Both technologies are molten in being applied to insulating oil
There is certain limitation when solving the on-line monitoring of gas.Fixed electric potential electroanalysis formula hydrogen gas sensor mainly has following defect: 1. are
Reach certain detection sensitivity, sensor communicated by porous gas diffusion barrier and external environment.Porous gas diffusion barrier
It ensure that under test gas molecule as much as possible can enter in sensor, so that sensor is with higher sensitive
Degree, but in addition under test gas molecule, hydrone largely can also pass in and out sensor by porous gas diffusion barrier, from
And sensor is easily influenced by external environment: using liquid electrolytic inside fixed electric potential electroanalysis formula hydrogen gas sensor
Matter, when external environment humidity is bigger, hydrone can be freely accessible to sensor internal sensor internal is caused water logging occur
Phenomenon；Otherwise when external environment humidity is smaller, the hydrone of sensor internal can be freely spread in environment again to be caused
The dry phenomenon of sensor internal, these can all cause fatal influence to the detection performance of sensor；2. porous gas is spread
Film proposes high requirement to the degassing unit in optoacoustic spectroscopy system: degassing unit will also have very strong net other than degassing
Change effect, prevents oil vapour from entering the phenomenon that sensor internal causes electrode to be poisoned by porous gas diffusion barrier；3. determining current potential
Electrolytic sensor carries out ionic conduction using liquid electrolyte, it may appear that phenomena such as leakage, thus because a widget and
Influence the performance of entire optoacoustic spectroscopy；4. fixed electric potential electroanalysis formula gas sensor was carried out under the case where fixing excitation potential
Gas detection, since sensor internal is always with the presence of excitation voltage, to affect the service life of sensor；5. determining current potential electricity
Catalyst used in solution formula gas sensor be it is non-selective, the various gas molecules for entering sensor internal are ok
Reaction is participated in, thus the accuracy of strong influence hydrogen detection.To sum up, fixed electric potential electroanalysis formula gas sensor is to be directed to
The design of general industry security context, service life is not suitable for photoelectric spectrum environment harsh so generally in 2 to three years,
The demand for requiring equipment that there is 10 years service life used above it is even more impossible to be competent at photoelectric spectrum；Sensor be it is non-selective, vulnerable to change
The influence of other interference gas dissolved in depressor oil.
The prior art belongs to a kind of MEMS technology there are also macromolecule membrane type hydrogen gas sensor, and there is no determine current potential electricity
The defect of solution formula hydrogen gas sensor, the sensor for being additionally based on MEMS technology generally have long service life, but this
The general remolding sensitivity of class sensor is lower, causes the phenomenon that Monitoring lower-cut is difficult to meet demand and low concentration test inaccuracy
The phenomenon that.Requiring A class equipment to want in the national standard of existing Gases Dissolved in Transformer Oil on-Line Monitor Device can be accurate
The hydrogen of 2ppm is detected, but the hydrogen gas sensor 20ppm hydrogen actually detected with MEMS technology all can not be accurate
Detection, is not able to satisfy the technical requirements in the field.
Utility model content
Problem to be solved in the utility model is, in view of the above drawbacks of the prior art, provides a kind of and optoacoustic spectroscopy
Matching used hydrogen detection components, with long service life, detection sensitivity is high, selectivity is good, can be applied to the evil such as power plant
Outstanding advantages of bad environment.
The utility model technical scheme applied to solve the technical problem is: one kind for optoacoustic spectroscopy instrument is mating makes
Hydrogen detection components, including hydrogen gas sensor and sample storage room, the hydrogen gas sensor include hollow shell and are located at
For detecting the fuel cell module of under test gas concentration in the shell, the both ends of the shell are respectively and the sample storage room
It is connected and is used to be provided with oil at the first end into the first end of sample to be tested and for the second end into oxygen
Gas seperation film, the Oil-gas Separation film include non-porous body membrane and porous supporting body.
In the hydrogen detection components of the utility model, thickness≤300 μm of the non-porous body membrane.
In the hydrogen detection components of the utility model, the non-porous body membrane be by polytetrafluoroethylene (PTFE), gathered vinyl fluoride,
Film made of polyimides or Kynoar.
In the hydrogen detection components of the utility model, the shell is shell made of metal.
In the hydrogen detection components of the utility model, the fuel cell module include electrolyte layer, anode, cathode,
Anode tap and cathode leg, the anode are located at the electrolyte layer towards the side of the first end, and the cathode is located at
For the electrolyte layer towards the side of the second end, the anode and cathode passes through anode tap and cathode leg and outer respectively
Circuit is connected.
In the hydrogen detection components of the utility model, the electrolyte layer is solid electrolyte layer.
In the hydrogen detection components of the utility model, the cathode and anode are porous gas diffusive electrode respectively.
In the hydrogen detection components of the utility model, the sample storage room is communicated with the outside world by oil circulating pump and oil pipe.
In the hydrogen detection components of the utility model, the sample storage room is close by the first end of sealing ring and the shell
Envelope connection.
In the hydrogen detection components of the utility model, the sample storage room has for adjusting the sample storage building volume size
Expansion regulating mechanism.
Be used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument of implementation the utility model, have beneficial below
Effect: being used for for the utility model is sensitive with the matching used hydrogen detection components long service life of optoacoustic spectroscopy instrument, detection
It is high, selective good to spend, and can be applied to the hydrogen detection in the adverse circumstances such as power plant.
Detailed description of the invention
Fig. 1 is the utility model for the structural representation with the matching used hydrogen detection components of optoacoustic spectroscopy instrument
Figure；
Fig. 2 is being used for and the non-porous ontology in the matching used hydrogen detection components of optoacoustic spectroscopy instrument for the utility model
Status diagram when film uses.
Specific embodiment
With reference to the accompanying drawings and examples, to the utility model for being examined with the matching used hydrogen of optoacoustic spectroscopy instrument
The structurally and functionally principle for surveying component is described further:
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The meanings such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise "
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore should not be understood as limiting the present invention.
As shown in Figs. 1-2, the utility model relates to one kind to be used for and the matching used hydrogen detection group of optoacoustic spectroscopy instrument
Part, the hydrogen detection components include hydrogen gas sensor and sample storage room 16, and hydrogen gas sensor includes hollow shell 11 and is located at
For detecting the fuel cell module 13 of under test gas concentration in shell 11, the both ends of shell 11 are respectively to be connected with sample storage room 16
It connects and is used to be provided with oil gas at first end 18 into the first end 18 of sample to be tested and for the second end 14 into oxygen
Seperation film 12, Oil-gas Separation film include non-porous body membrane 121 and porous supporting body 122.
Shell 11 is made of metal, such as by copper, aluminium or stainless steel, effect is mainly internal fuel cell
Component 13 provides the support protection in structure and the shielding in terms of electric signal, provides safe and reliable transmission signal vector, fills
When the connection medium with the equal components in sample storage room 16.
Non-porous body membrane 121 is mainly used for isolating under test gas in insulating oil or is directly used in gas diffusion.Nothing
Hole body membrane 121 is made of the film with hydrophobic nature and some strength.Non-porous body membrane 121 can use polytetrafluoroethyl-ne
Alkene gathered the materials such as vinyl fluoride, polyimides or Kynoar, and material itself is without hole, and gas molecule is using dissolution diffusion
Principle be perforated through non-porous body membrane 121, i.e. gas molecule is initially dissolved in non-porous body membrane 121 and diffuses out from film again
Reach task of gas diffusion is completed inside shell 11.Due to non-porous body membrane 121 be in itself do not have it is porose, then gas molecule
It is smaller bigger into the probability inside shell 11, it is preferred to use selective hydrogen diffusion barrier, only hydrogen can enter shell
Inside 11, other gases be cannot be introduced into, to inherently solve the problems, such as that sensor is influenced vulnerable to other interference gas.Nothing
121 thickness requirement≤300 μm of hole body membrane, because the thickness increase of film can both extend gas molecule and enter required for sensor
Time can significantly reduce the ratio of gas molecule entrance again.Since so thin non-porous body membrane 121 is encountering positive pressure negative pressure
When be easy to appear deformation even breakage so as to cause entire sensor failure, also added thus as non-porous body membrane
121 porous supporting bodies 122 provided a supporting role, what porous supporting body 122 can be made of metal, it is also possible to rigid plastics
Made of manufactured or ceramic, mica.
Fuel cell module 13 includes electrolyte layer 131, anode 132, cathode 133, anode tap 134 and cathode leg
135, anode 132 is located at electrolyte layer 131 towards the side of first end 18, and cathode 133 is located at electrolyte layer 131 towards second end
14 side, anode and cathode passes through anode tap respectively and cathode leg is connected with external circuit.Cathode leg 135 and anode draw
Line 134 is made of conductive metal.Cathode 133 and anode 132 are porous gas diffusive electrode respectively.
It should be noted that electrolyte layer 131 is made of solid electrolyte in the prior art, here no longer in detail
It repeats.
The electrolyte layer 131 that solid electrolyte is formed plays isolation anode and cathode gas and provides the work in proton transfer channel
With, using solid electrolyte can to avoid present in liquid electrolyte vulnerable to wind such as environmental change influence and electrolyte leakages
Danger.The catalyst of cathode 133 and anode 132 is the place that gas chemically reacts.Used in cathode 133 and anode 132
Catalyst can be identical ingredient and be also possible to different ingredients.When hydrogen molecule to be detected is saturating with the principle for dissolving diffusion
When crossing Oil-gas Separation film 12 and entering the inside of shell 11 and reach anode 132, effect of the hydrogen molecule in the catalyst of anode 132
Lower generation oxidation reaction generates hydrogen ion, while entering the oxygen inside shell 11 by air and reaching cathode 133, in cathode 133
Catalyst at occur reduction reaction generate oxonium ion；Hydrogen ion moves to yin by anode 132 under the action of electrolyte layer 131
Pole 133 and oxonium ion, which combine, generates water, while electronics moves to anode 132 by cathode 133 in external circuit, completes chemical reaction,
The quantity of the electronics transmitted is directly proportional with the amount of hydrogen for participating in reaction, and the size by detecting electric current can realize hydrogen
Detection.
Sample storage room 16 is communicated with the outside world by oil circulating pump 17 and oil pipe.Pass through sealing ring between sample storage room 16 and shell 11
151 are tightly connected.Wherein, sample storage room 16 can be used as grease chamber, can also be used as gas chamber, for store provide reaction sample gas or
Person's sample oil.The mode that sample storage room 16 is connected with shell 11 can be connect by fastener 152, such as screw, expandable nail.Sample storage
One end end face that room 16 connects must smooth impulse- free robustness, phenomena such as preventing gas leak of the oil leakage.Sample storage room 16 passes through quick coupling
(not indicating in figure) is connected with conduit, and in actual work, under the action of oil circulating pump 17, sample to be tested enters sample storage
It is used for sensor detection room 16.
Sample storage room 16 has the expansion regulating mechanism (not indicating in figure) for adjusting 16 volume size of sample storage room, such as flexible
Pipe etc..It by 16 volume-tunable of sample storage room, and then can adjust according to actual needs, to guarantee that the gas for having sufficient amount enters sensing
Reaction is participated in inside device.
It should be understood that it will be understood by those skilled in the art that it can be modified or changed according to the above description, but this
It is a little to improve or convert within the protection scope that all should belong to the appended claims for the utility model.
Claims (10)
1. one kind is used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument, which is characterized in that including hydrogen gas sensor
With sample storage room (16), the hydrogen gas sensor include hollow shell (11) and be located at the shell (11) in for detect to
The fuel cell module (13) of gas concentration is surveyed, the both ends of the shell (11) are respectively to be connected simultaneously with the sample storage room (16)
Second end (14) for entering the first end (18) of sample to be tested and for entering oxygen, is arranged at the first end (18)
Have Oil-gas Separation film (12), the Oil-gas Separation film (12) includes non-porous body membrane (121) and porous supporting body (122).
2. hydrogen detection components according to claim 1, which is characterized in that the thickness of the non-porous body membrane (121)≤
300μm。
3. hydrogen detection components according to claim 1, which is characterized in that the non-porous body membrane (121) is by poly- four
Vinyl fluoride gathered film made of vinyl fluoride, polyimides or Kynoar.
4. hydrogen detection components according to claim 1, which is characterized in that the shell (11) is shell made of metal
Body.
5. hydrogen detection components according to claim 1, which is characterized in that the fuel cell module (13) includes electrolysis
Matter layer (131), anode (132), cathode (133), anode tap (134) and cathode leg (135), the anode (132) are located at
For the electrolyte layer (131) towards the side of the first end (18), the cathode (133) is located at the electrolyte layer (131)
Towards the side of the second end (14), the anode and cathode passes through anode tap and cathode leg and external circuit phase respectively
Even.
6. hydrogen detection components according to claim 5, which is characterized in that the electrolyte layer (131) is solid electrolytic
Matter layer.
7. hydrogen detection components according to claim 5, which is characterized in that the cathode (133) and anode (132) are respectively
It is porous gas diffusive electrode.
8. hydrogen detection components according to claim 1, which is characterized in that the sample storage room (16) passes through oil circulating pump
(17) it is communicated with the outside world with oil pipe.
9. hydrogen detection components according to claim 8, which is characterized in that the sample storage room (16) passes through sealing ring
(151) it is tightly connected with the first end (18) of the shell (11).
10. hydrogen detection components according to claim 8, which is characterized in that the sample storage room (16) has for adjusting
The expansion regulating mechanism of sample storage room (16) the volume size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820468288.9U CN208187963U (en) | 2018-04-04 | 2018-04-04 | One kind is used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument |
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| CN201820468288.9U CN208187963U (en) | 2018-04-04 | 2018-04-04 | One kind is used for and the matching used hydrogen detection components of optoacoustic spectroscopy instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254420A (en) * | 2016-12-28 | 2018-07-06 | 深圳市普晟传感技术有限公司 | A kind of hydrogen gas sensor for quickly detection low-concentration hydrogen |
| CN110398461A (en) * | 2019-07-11 | 2019-11-01 | 上海交通大学 | A kind of three-D imaging method for realizing dendrite in lithium metal battery using photoacoustic imaging |
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
-
2018
- 2018-04-04 CN CN201820468288.9U patent/CN208187963U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254420A (en) * | 2016-12-28 | 2018-07-06 | 深圳市普晟传感技术有限公司 | A kind of hydrogen gas sensor for quickly detection low-concentration hydrogen |
| CN110398461A (en) * | 2019-07-11 | 2019-11-01 | 上海交通大学 | A kind of three-D imaging method for realizing dendrite in lithium metal battery using photoacoustic imaging |
| CN110530798A (en) * | 2019-10-15 | 2019-12-03 | 苏州市职业大学 | A kind of optoacoustic spectroscopy integrated monitoring |
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