CN217384492U - Fluorescence temperature measurement optical fiber for oil-immersed transformer - Google Patents
Fluorescence temperature measurement optical fiber for oil-immersed transformer Download PDFInfo
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- CN217384492U CN217384492U CN202220201967.6U CN202220201967U CN217384492U CN 217384492 U CN217384492 U CN 217384492U CN 202220201967 U CN202220201967 U CN 202220201967U CN 217384492 U CN217384492 U CN 217384492U
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Abstract
The utility model discloses a fluorescence temperature measurement optic fibre for oil-immersed transformer belongs to transformer technical field, including fluorescence temperature measurement probe and signal output unit, fluorescence temperature measurement probe includes first optic fibre and phosphor, and signal output unit includes second optic fibre, ST connector, inlayer sleeve pipe and outer sleeve pipe, has solved the technical problem that temperature measurement optic fibre is fragile, unprotected, the utility model discloses it is convenient to produce, with low costs, and the uniformity is controllable, and the security is high, and is high temperature resistant, resistant oily, and insulating properties is strong, and optic fibre is protected by two-layer sleeve pipe, and intensity is higher, and tail end service standard ST connects, on-the-spot simple to operate.
Description
Technical Field
The utility model belongs to the technical field of the transformer, especially, relate to a fluorescence temperature measurement optic fibre for oil-immersed transformer.
Background
The power transformer is used as a core device of a transformer substation and needs to strictly maintain normal operation temperature. The traditional transformer temperature monitoring means is mostly used for simulating the winding temperature by measuring the oil surface temperature, the calculated temperature deviation is large, and serious hysteresis exists. The optical fiber temperature measuring technology has the characteristics of electromagnetic interference resistance, small size and the like, and can be directly installed on a position to be monitored due to strong insulating property. The fluorescent temperature measuring optical fiber is installed in the transformer and soaked in the transformer insulating oil for a long time, and the maintenance and the replacement are very complicated, so that the long-term safe and stable work of the temperature measuring optical fiber is very important. The existing temperature measurement optical fiber mostly uses resin adhesive to adhere fluorescent materials to manufacture a probe, and uses a gap between a silica gel filling and sealing sleeve and the optical fiber to strengthen the insulating property, so that the manufacturing steps are multiple, the process is complex, the body of the temperature measurement optical fiber is fragile, and the consistency cannot be well guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fluorescence temperature measurement optic fibre for oil-immersed transformer has solved the technical problem that temperature measurement optic fibre is fragile, unprotected.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a fluorescence temperature measurement optical fiber for an oil-immersed transformer comprises a fluorescence temperature measurement probe and a signal output unit, wherein the fluorescence temperature measurement probe comprises a first optical fiber and a fluorescent object, one end of the first optical fiber is provided with the fluorescent object, and the other end of the first optical fiber is a first optical fiber output end which is used for being welded with the signal output unit;
the signal output unit comprises a second optical fiber, an ST connector, an inner-layer sleeve and an outer-layer sleeve, one end of the second optical fiber is fixedly connected with the ST connector, the other end of the second optical fiber is in fusion joint with the output end of the first optical fiber, the outer layer of the second optical fiber is provided with the inner-layer sleeve, and the outer layer of the inner-layer sleeve is provided with the outer-layer sleeve.
Preferably, the outer layer of the fluorescent substance is coated with epoxy resin glue.
Preferably, the epoxy resin glue is a high-temperature resistant black epoxy resin glue.
Preferably, the outer layer of the fusion part of the first optical fiber output end and the second optical fiber is provided with a heat-shrinkable sleeve.
Preferably, the heat shrink sleeve is also used to retract the second optical fiber and the inner sleeve.
Preferably, the fluorescent substance is a drop-shaped solid object formed by dissolving fluorescent powder in a liquid sodium silicate solution and then standing and curing.
Preferably, the inner sleeve and the outer sleeve are both polytetrafluoroethylene sleeves.
Preferably, a gap exists between the inner jacket and the second optical fiber.
Preferably, the second optical fiber is encapsulated in the ST connector by grinding, and the ST connector, the inner jacket and the outer jacket are crimped using a tail ring.
A fluorescence temperature measurement optic fibre for oil-immersed transformer, solved temperature measurement optic fibre fragile, the technical problem of no protection, the utility model discloses production is convenient, and is with low costs, and the uniformity is controllable, and the security is high, high temperature resistant, resistant oil, insulating properties is strong, optic fibre is protected by two-layer sleeve pipe, intensity is higher, tail end service standard ST connects, on-the-spot simple to operate.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: phosphor 1, first optical fiber 2, fusion splice 3, outer jacket 4, inner jacket 5, second optical fiber 6, ST connector 7, heat shrink 8.
Detailed Description
The fluorescence temperature measurement optical fiber for the oil-immersed transformer shown in fig. 1 comprises a fluorescence temperature measurement probe and a signal output unit, wherein the fluorescence temperature measurement probe comprises a first optical fiber and a fluorescent object, one end of the first optical fiber is provided with the fluorescent object, and the other end of the first optical fiber is a first optical fiber output end which is used for being welded with the signal output unit;
the outer coating of phosphor is high temperature resistant black epoxy glue, the phosphor is after phosphor powder dissolves in liquid sodium silicate solution, the water droplet form solid object that the solidification of standing still formed again, when preparing the phosphor, at first dissolve phosphor powder in liquid sodium silicate solution with certain proportion, the stirring misce bene, then intercept bare fiber about 3cm dips in and get phosphor powder solution, guarantee that the terminal surface is covered completely, this bare fiber is first optic fibre, then the solidification of standing still, the optic fibre terminal surface can form water droplet form solid naturally, then coat high temperature resistant black epoxy glue outside probe fluorescent substance solid again, isolate external light, protect inside fluorescent substance, water-fast resistant oil.
The signal output unit comprises a second optical fiber, an ST connector, an inner-layer sleeve and an outer-layer sleeve, one end of the second optical fiber is fixedly connected with the ST connector, the other end of the second optical fiber is welded with the output end of the first optical fiber, the inner-layer sleeve is arranged on the outer layer of the second optical fiber, and the outer-layer sleeve is arranged on the outer layer of the inner-layer sleeve.
The outer layer of the fusion part of the first optical fiber output end and the second optical fiber is provided with a heat-shrinkable sleeve, the heat-shrinkable sleeve is also used for retracting the second optical fiber and the inner-layer sleeve, and the inner-layer sleeve and the outer-layer sleeve are polytetrafluoroethylene sleeves. A gap exists between the inner jacket and the second optical fiber. The second optical fiber is encapsulated in the ST connector by grinding, and the ST connector, the inner jacket, and the outer jacket are crimped using a tail ring.
When first optic fibre and second optical fiber butt fusion are together, at first will thin polytetrafluoroethylene sleeve pipe (inlayer sleeve pipe) vertically cut open completely the back and sheathe in naked second optic fibre, increase the ability of nai buckling of second optic fibre, when fluorescence temperature measurement optic fibre was installed inside the transformer, because all go up to have the gap between the inlayer sleeve pipe second optic fibre, transformer insulating oil can fill into the clearance between optic fibre and the sleeve pipe completely, avoids the clearance air post to lead to the creepage.
Then first optic fibre and second optic fibre of butt fusion, the jacket is on the inlayer sleeve pipe after carrying out the spiral cutting with thicker outer casing pipe, increases the compressive capacity of second optic fibre under the condition that does not influence second optic fibre buckling performance, uses heat shrinkage bush to contract at the splice of first optic fibre and second optic fibre first optic fibre, second optic fibre and inlayer sleeve pipe, ensures can not lead to damaging the phosphor because the expend with heat and contract with cold coefficient difference of optic fibre and sheathed tube.
And finally, grinding and packaging the other end (the end which is not welded with the first optical fiber) of the second optical fiber in a standard ST head, and pressing the ST head, the inner-layer sleeve and the outer-layer sleeve by using a tail ring to ensure complete fastening.
A fluorescence temperature measurement optic fibre for oil-immersed transformer, solved temperature measurement optic fibre fragile, the technical problem of no protection, the utility model discloses production is convenient, and is with low costs, and the uniformity is controllable, and the security is high, high temperature resistant, resistant oil, insulating properties is strong, optic fibre is protected by two-layer sleeve pipe, intensity is higher, tail end service standard ST connects, on-the-spot simple to operate.
Claims (8)
1. The utility model provides a fluorescence temperature measurement optic fibre for oil-immersed transformer which characterized in that: the fluorescence temperature measuring probe comprises a first optical fiber and a fluorescent object, wherein one end of the first optical fiber is provided with the fluorescent object, and the other end of the first optical fiber is a first optical fiber output end which is used for being welded with the signal output unit;
the signal output unit comprises a second optical fiber, an ST connector, an inner-layer sleeve and an outer-layer sleeve, one end of the second optical fiber is fixedly connected with the ST connector, the other end of the second optical fiber is welded with the output end of the first optical fiber, the inner-layer sleeve is arranged on the outer layer of the second optical fiber, and the outer-layer sleeve is arranged on the outer layer of the inner-layer sleeve.
2. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 1, wherein: and epoxy resin glue is coated on the outer layer of the fluorescent object.
3. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 2, wherein: the epoxy resin glue is high-temperature-resistant black epoxy resin glue.
4. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 1, wherein: and the outer layer of the fusion part of the first optical fiber output end and the second optical fiber is provided with a heat-shrinkable sleeve.
5. The fluorescence thermometric optical fiber for oil-filled transformer according to claim 4, wherein: the heat shrink sleeve is also used to retract the second optical fiber and the inner sleeve.
6. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 1, wherein: the inner layer sleeve and the outer layer sleeve are both polytetrafluoroethylene sleeves.
7. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 1, wherein: a gap exists between the inner jacket and the second optical fiber.
8. The fluorescence thermometric optical fiber for oil-immersed transformer according to claim 1, wherein: the second optical fiber is encapsulated in the ST connector by grinding, and the ST connector, the inner jacket, and the outer jacket are crimped using a tail ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220201967.6U CN217384492U (en) | 2022-01-25 | 2022-01-25 | Fluorescence temperature measurement optical fiber for oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220201967.6U CN217384492U (en) | 2022-01-25 | 2022-01-25 | Fluorescence temperature measurement optical fiber for oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217384492U true CN217384492U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220201967.6U Active CN217384492U (en) | 2022-01-25 | 2022-01-25 | Fluorescence temperature measurement optical fiber for oil-immersed transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN217384492U (en) |
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2022
- 2022-01-25 CN CN202220201967.6U patent/CN217384492U/en active Active
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