CN207020081U - The optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time - Google Patents
The optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time Download PDFInfo
- Publication number
- CN207020081U CN207020081U CN201720849004.6U CN201720849004U CN207020081U CN 207020081 U CN207020081 U CN 207020081U CN 201720849004 U CN201720849004 U CN 201720849004U CN 207020081 U CN207020081 U CN 207020081U
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- China
- Prior art keywords
- micro
- water content
- angle prism
- metal film
- detection
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- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 title claims abstract description 12
- 230000003287 optical effect Effects 0.000 title claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 24
- 238000002310 reflectometry Methods 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 19
- 235000019198 oils Nutrition 0.000 description 19
- 238000012544 monitoring process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 235000019476 oil-water mixture Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000346 nonvolatile oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
It the utility model is related to a kind of optical sensing devices of micro-water content in transformer insulation oil of detection in real time.It includes LASER Light Source, light intensity detector, right-angle prism and metal film, the metal-plated membrane on the hypotenuse of right-angle prism, described metal film contacts with transformer insulation oil to be measured, the right-angle side of the laser that described LASER Light Source is sent from right-angle prism is incident, after Metal film reflector, it is emitted from another right-angle side of right-angle prism, and is received by light intensity detector, micro-water content in insulating oil is determined by the change of reflectivity.The utility model has the advantages that environmental protection, cost is low, can carry out real-time multiple spot detection.
Description
Technical field
A kind of optical sensing devices are the utility model is related to, micro- water contains in specifically a kind of transformer insulation oil of detection in real time
The Optical devices of amount.
Background technology
Data from abroad points out that the life-span of transformer is substantially exactly the life-span of solid insulating material.Moisture is to transformer
The electrical property and physics of insulating oil, chemical property have very big harm, so that solid insulation is by permanent destruction.In addition
Accelerate equipment metal parts corrosion rate and encourage the corrosive power of organic acid.At present, the micro- water detection of transformer insulation oil is logical
Sample frequently with to transformer oil, sample is entered using red, orange, green, blue, yellow (ROGBY), karl Fischer reagent method or coulomb method in laboratory
Row detection.These method precision are high, detect offline reachable hundred a ten thousandths, but chemical reagent be present（Pyridine）Smell is smelly, pollution
Seriously, standard reagent needs the shortcomings of now with the current；The ability not monitored in real time more importantly, it can only use and " periodically change
The mode of oil " causes the waste of substantial amounts of human and material resources and financial resources come the generation prevented accident.
Surface plasma resonance sensor（Surface plasmon resonance sensor, hereinafter referred to as SPR
Sensor）It is that one kind utilizes laser and metal surface plasma polaron（surface plasmonpolariton）Resonance come
Realize and high-precision sensing and the novel sensor of analysis are carried out to the sample of metal surface.The change of metal surface refractive index can draw
The resonance mismatch of laser and metal surface plasma polaron is played, resonance mismatch can cause reflective light intensity to change, and intensive properties SPR is passed
Sensor is exactly to be sensed by detecting light intensity change.
The content of the invention
The utility model is for the micro- water detection technique of existing insulating oil is seriously polluted, operation is inconvenient and can not carry out reality
When the shortcomings of monitoring, devise the optical sensing devices of micro-water content in new real-time detection insulating oil a kind of.
The technical solution adopted in the utility model is：
The utility model includes LASER Light Source, light intensity detector, right-angle prism and metal film, on the hypotenuse of right-angle prism
Metal-plated membrane, described metal film contact with transformer insulation oil to be measured, and the laser that described LASER Light Source is sent is from straight
The right-angle side of angle prism is incident, after Metal film reflector, is emitted from another right-angle side of right-angle prism, and by light intensity detector
Receive, micro-water content in insulating oil is determined by the change of reflectivity.
The utility model has an advantageous effect in that：
On the one hand, SPR sensor device is simple in construction, small volume, can carry out that in situ, refractive index becomes precisely in real time
Change detection, the point of multiple needs monitoring of oil tank of transformer can be advantageously mounted on, so as to realize in real time, multiple spot, accurately
Micro-water content detects.On the other hand, spr sensor service life length, may be reused, energy without any additional anti-primer
It is enough cost-effective and do not cause any pollution to environment.
Brief description of the drawings
Fig. 1 is the utility model structure chart.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：
As shown in figure 1, include LASER Light Source 1, light for the optical sensing devices for detecting micro-water content in insulating oil in real time
Strong detector 6, right-angle prism 2, metal film 3.
The thick metal films of 50nm or so are plated in right-angle prism surface, the incident light that light source is sent is beaten by right-angle prism
In the lower surface of metal film, light intensity detector measurement reflective light intensity is utilized in opposite side.Whole device is installed on transformer oil
On case, and metal film is set to be contacted with each other with insulating oil 5, so as to form the sandwich construction of " prism-metal film-insulating oil ".When
When the content of micro-moisture 4 changes in insulating oil, the refractive index for the oil reservoir that insulate can change, and variations in refractive index can cause
Metal film changes to the reflectivity of incident light.The corresponding fixed oil water mixture refractive index of a certain size moisture is big
It is small, therefore by measuring reflectivity of the metal film to incident light, you can obtain moisture size in oil water mixture now.
Pass through the reflectivity changes of real-time monitoring of computer metal film, you can realize the monitoring to micro-water content in insulating oil.
Right-angle prism material is BK7 in the present embodiment, refractive index 1.515.Metal film uses golden film, and thickness is about
50nm。
The utility model set forth a kind of optical sensing devices of micro-water content in transformer insulation oil of detection in real time.Utilize
SPR optical sensing devices, the multiple spot to micro-water content can be realized, in real time, accurately detected.Carried out using this optical sensor
Micro-water content detects, and has the advantages that environmental protection, cost is low, can carry out real-time multiple spot detection.
Claims (2)
1. the optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time, including LASER Light Source, light intensity detection
Device, right-angle prism and metal film, it is characterised in that：
The metal-plated membrane on the hypotenuse of right-angle prism, described metal film contacts with transformer insulation oil to be measured, described
The right-angle side of the laser that LASER Light Source is sent from right-angle prism is incident, after Metal film reflector, from the another straight of right-angle prism
The arm of angle is emitted, and is received by light intensity detector, and micro-water content in insulating oil is determined by the change of reflectivity.
2. the optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time according to claim 1, its
It is characterised by：Right-angle prism material is BK7, refractive index 1.515；Metal film uses golden film, thickness 50nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720849004.6U CN207020081U (en) | 2017-07-13 | 2017-07-13 | The optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720849004.6U CN207020081U (en) | 2017-07-13 | 2017-07-13 | The optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207020081U true CN207020081U (en) | 2018-02-16 |
Family
ID=61483818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720849004.6U Expired - Fee Related CN207020081U (en) | 2017-07-13 | 2017-07-13 | The optical sensing devices of micro-water content in a kind of transformer insulation oil of detection in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207020081U (en) |
-
2017
- 2017-07-13 CN CN201720849004.6U patent/CN207020081U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180216 Termination date: 20200713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |