CN109935456A - A kind of mounting structure of transformer fibre optic temperature sensor - Google Patents
A kind of mounting structure of transformer fibre optic temperature sensor Download PDFInfo
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- CN109935456A CN109935456A CN201910380363.5A CN201910380363A CN109935456A CN 109935456 A CN109935456 A CN 109935456A CN 201910380363 A CN201910380363 A CN 201910380363A CN 109935456 A CN109935456 A CN 109935456A
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- fibre optic
- optic temperature
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- 238000004804 winding Methods 0.000 claims abstract description 53
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Abstract
Description
Technical field
The present invention relates to transformer monitoring technical field more particularly to a kind of installation knots of transformer fibre optic temperature sensor Structure.
Background technique
Power equipment in the process of running, is influenced by the factors such as electricity, heat, natural environment, long-term work, overwork, It is easy to cause ageing equipment, performance decline, reliability reduces, or even jeopardizes the safe operation of system.As transformer, switchgear, Because of poor contact, contact resistance increases, and causes contact temperature rise excessively high for the positions such as ring network cabinet contact or cable connector, cause fire, The accidents such as explosion.Therefore, it is necessary to carry out real-time, on-line monitoring to power equipment, failure is found in time, and accident elimination is being sprouted Bud state extends service life of equipment.Safety monitoring is generally carried out to its power equipment using sensor.For oil-immersed type power For transformer, when load or environment temperature are excessively high or when winding internal heat dissipating stopping up of oil channel, the winding temperature of transformer It can increase extremely.Transformer will bear a degree of danger, the maximum temperature quilt that a part of transformer winding occurs at this time Referred to as hot-spot temperature of transformer.Hot(test)-spot temperature is once more than transformer insulated limiting temperature, will lead to insulation ag(e)ing or exhausted Edge destroy, cause transformer life shorten in addition ontology damage.Therefore, detecting and controlling hot-spot temperature of transformer is to guarantee to become The determinant of depressor safe operation.
Since transformer hotspot location is inside winding, directly to detect its temperature and usually be realized by fibre-optical probe. Currently, the installation of optical fiber winding temperature measurement probe is carried out after the completion of transformer winding coiling, fiber optic temperature measuring probe is embedded in In cushion block, the cushion block at hotspot location is replaced with the cushion block with fiber optic temperature measuring probe, and remaining internal optical fiber is folded It ties up.Then the winding progress assembly process with optical fiber.
But fibre optic temperature sensor is during the installation process, is very easy to be damaged, and causes very high use cost.It is logical Cross a large amount of observation, analysis, test, discovery fibre optic temperature sensor be damaged mainly due to fibre optic temperature sensor inside Caused by optical fiber is damaged by backfin.Cause fibre optic temperature sensor by the reason of backfin mainly transformer assembling process In, the accident collision, the bending that occur when lifting, assembling.
Therefore, it is necessary to a kind of install convenient is provided in view of the above deficiencies, the high transformer optical fiber temperature of equipment safety coefficient Spend the mounting structure of sensor.
Summary of the invention
The object of the present invention is to provide a kind of mounting structure of transformer fibre optic temperature sensor, install convenient and equipment Safety coefficient it is higher, avoid damage of the optical fiber temperature measuring sensor in transformer assembling process.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of mounting structure of transformer fibre optic temperature sensor of the present invention, including iron core, folder, winding and spacer Item further includes fibre optic temperature sensor and sheath, and the outside of the iron core is arranged in the winding, and winding includes the low pressure of inside The high-voltage winding of winding and outside is provided with several interval stays between the low pressure winding and high-voltage winding；Wherein one The groove for burying the fibre optic temperature sensor is provided on one big side of a interval stay；Bury the fiber optic temperature The line outlet of the groove upper end of sensor is connected with the sheath, and the sheath is fixedly connected on the limit on the folder In slot；The transmission fiber of the fibre optic temperature sensor passes sequentially through the groove being spaced on stay and sheath is communicated to transformation In terminal box outside device cabinet.
Further, the groove on the interval stay includes main channel, divides conduit and locating notch, two positioning Notch is located at the two sides of the interval stay and opening direction is respectively facing the low pressure winding and high-voltage winding；The master Conduit is vertically arranged in the middle position of the interval stay, the end of the main channel along the length direction of the interval stay End described in two by dividing conduit to be respectively communicated with the locating notch.
Further, the fibre optic temperature sensor includes probe and locating piece, and the probe is Nian Jie with the locating piece It being combined with each other, the end of the transmission fiber is arranged in described pop one's head in, and the locating piece is connected in the locating notch, and The measurement end part of two probes is not towards the low pressure winding and high-voltage winding.
Further, the interval stay further includes small block, and several small blocks exist the transmission fiber block The main channel and divide in conduit, the small block is bonded on the big side of the interval stay.
Further, the sheath is fixedly connected in the C-shaped channel of the folder by several sheath fixing clamps, the shield Recess corresponding with the outer diameter of the sheath is provided in the middle part of set fixing clamp and both ends are mounted on the folder by bonding way Inside.
Further, the sheath is provided with smooth fillet in bending part.
Compared with prior art, advantageous effects of the invention:
A kind of mounting structure of transformer fibre optic temperature sensor of the present invention, the entirety of fibre optic temperature sensor are embedded in It is spaced in the groove and sheath of stay, without exposed part, so the transformation after fibre optic temperature sensor installs In the assembling process of device, integral assembling, is dried and when general assembly, avoids hanging optical fiber sensing body assembly The probe or transmission fiber of device the external force such as are squeezed, distort and being damaged, and clean and tidy, beautiful.
In addition, probe and locating piece are bonded togather before mounting temperature sensor, it can either prevent probe from pacifying It is also convenient for installation positioning by external force collision during dress, locating piece specifically uses regular hexagon shape and locating notch to be adapted, It prevents locating piece from rotating convenient for positioning, the detection angles of probe is avoided to change.
Detailed description of the invention
The invention will be further described for explanation with reference to the accompanying drawing.
Fig. 1 is the mounting structure composed structure schematic diagram of transformer fibre optic temperature sensor of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the I partial enlarged view of Fig. 2；
Description of symbols: 1, iron core；2, folder；3, winding；301, low pressure winding；302, high-voltage winding；4, spacer Item；4a, main channel；4b, divide conduit；4c, locating notch；401, small block；5, fibre optic temperature sensor；501, it pops one's head in；502, Locating piece；503, transmission fiber；6, sheath；601, sheath fixing clamp.
Specific embodiment
Core of the invention is to provide a kind of mounting structure of transformer fibre optic temperature sensor, install convenient and equipment Safety coefficient it is higher, avoid damage of the optical fiber temperature measuring sensor in transformer assembling process.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear and complete Description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In a specific embodiment, as shown in Figures 1 to 3, a kind of mounting structure of transformer fibre optic temperature sensor, packet Iron core 1, folder 2, winding 3 and interval stay 4 are included, further includes fibre optic temperature sensor 5 and sheath 6, winding 3 is arranged in iron core 1 Outside, the low pressure winding 301 of winding 3 including inside and the high-voltage winding 302 in outside, low pressure winding 301 and high-voltage winding 302 it Between be provided with several interval stays 4, ensure that insulating properties between low pressure winding 301 and high-voltage winding 302, convenient for passing through cooling oil It is cooled down.The groove of embedded fibre optic temperature sensor 5 is provided on one big side of one of interval stay 4.Embedded light The line outlet of the groove of fine temperature sensor 5 is connected with sheath 6, and sheath 6 is fixedly connected in the C-shaped channel of folder 2, Sheath 6 specifically uses Teflon hose or insulating paper tube.The transmission fiber 503 of fibre optic temperature sensor 5 passes sequentially through described recessed Slot and sheath 6 are communicated in the external terminal box of transformer tank.Because the entirety of fibre optic temperature sensor 5 is embedded in described It is spaced in the groove and sheath 6 on stay 4, without exposed part, so after fibre optic temperature sensor 5 installs In the assembling process of transformer, integral assembling, is dried and when general assembly, avoids hanging fiber optic temperature body assembly The probe or transmission fiber 503 of sensor 5 external force such as are squeezed, distort and being damaged, and clean and tidy, beautiful.
In a specific embodiment of the invention, as shown in figure 3, the groove on the interval stay 4 includes main channel 4a, two sides and the opening direction court respectively for dividing conduit 4b and locating notch 4c, two locating notch 4c to be located at interval stay 4 To low pressure winding 301 and high-voltage winding 302, locating notch 4c specifically uses regular hexagon notch, prevents from rotating convenient for positioning.It is main Conduit 4a is vertically arranged in the middle position of interval stay 4 along the length direction of interval stay 4, and the end of main channel 4a passes through Two points of conduit 4b are respectively communicated with locating notch 4c, and the transmission fiber 503 of fibre optic temperature sensor 5 is laid on the main channel 4a With divide in conduit 4b.
Further, as shown in figure 3, fibre optic temperature sensor 5 further includes probe 501 and locating piece 502, probe 501 is set It sets in the end of transmission fiber 503, and probe 501 is bonded togather in advance with locating piece 502, can either prevent from popping one's head in It is also convenient for installation positioning by external force collision in 501 installation processes, locating piece 502 specifically uses regular hexagon shape and locating notch 4c is adapted, and prevents the detection angle of probe 501 from changing.The shape of locating notch 4c and locating piece 502 is not limited to make With regular hexagon, it is only necessary to can prevent locating piece 502 from rotating and the direction of probe 501 is kept not change.Positioning Being connected in locating notch 4c for 502 elastic conjunction of block, prevents to fall.When paying attention to that locating piece 502 is installed, two probes 501 measurement end part measures low pressure winding 301 and high-voltage winding not towards low pressure winding 301 and high-voltage winding 302 respectively The temperature of 302 hot spot.
Further, interval stay 4 further includes small block 401, and several small blocks 401 are by 503 block of transmission fiber in master Conduit 4a and divide in conduit 4b, small block 401 is using PVA glue sticking on the big side of interval stay 4.
In a specific embodiment of the invention, as shown in Figure 1, sheath 6 connects by the way that several sheath fixing clamps 601 are fixed It connects in the C-shaped channel of folder 2, sheath fixing clamp 601 is specifically made of insulating board.It is provided in the middle part of sheath fixing clamp 601 Recess corresponding with the outer diameter of sheath 6 and both ends are mounted on the inside of folder 2 by bonding way.Further, sheath 6 is being rolled over Crook is provided with smooth fillet, and transmission fiber 503 is effectively prevent to occur to bend firmly.
The mounting structure of transformer fibre optic temperature sensor described in this case, so that fibre optic temperature sensor 5 is all embedded Or it in 6 interior cabling of sheath, avoids exposed and is squeezed damage caused by distortion.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910380363.5A CN109935456A (en) | 2019-05-08 | 2019-05-08 | A kind of mounting structure of transformer fibre optic temperature sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910380363.5A CN109935456A (en) | 2019-05-08 | 2019-05-08 | A kind of mounting structure of transformer fibre optic temperature sensor |
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| CN109935456A true CN109935456A (en) | 2019-06-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949744A (en) * | 2010-09-06 | 2011-01-19 | 国网电力科学研究院武汉南瑞有限责任公司 | Fiber grating-based transformer internal temperature detection system |
| CN106468599A (en) * | 2016-07-19 | 2017-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Oil-immersed type transformer fiber optic temperature measuring probe fixing device |
| CN206847818U (en) * | 2017-06-30 | 2018-01-05 | 中国西电电气股份有限公司 | A kind of optical fiber temperature-measurement device |
| CN104990639B (en) * | 2015-07-01 | 2019-01-01 | 广东电网有限责任公司电力科学研究院 | A kind of optical fiber temperature-measurement structure on 10KV distribution transformer |
-
2019
- 2019-05-08 CN CN201910380363.5A patent/CN109935456A/en active Search and Examination
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949744A (en) * | 2010-09-06 | 2011-01-19 | 国网电力科学研究院武汉南瑞有限责任公司 | Fiber grating-based transformer internal temperature detection system |
| CN104990639B (en) * | 2015-07-01 | 2019-01-01 | 广东电网有限责任公司电力科学研究院 | A kind of optical fiber temperature-measurement structure on 10KV distribution transformer |
| CN106468599A (en) * | 2016-07-19 | 2017-03-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Oil-immersed type transformer fiber optic temperature measuring probe fixing device |
| CN206847818U (en) * | 2017-06-30 | 2018-01-05 | 中国西电电气股份有限公司 | A kind of optical fiber temperature-measurement device |
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Effective date of registration: 20190918 Address after: 150000 Heilongjiang city of Harbin province Daoli District Shangzhi Street No. 188 Applicant after: Harbin Power Supply Company, State Grid Heilongjiang Electric Power Co., Ltd. Applicant after: North China Electric Power University (Baoding) Applicant after: State Grid Co., Ltd. Address before: 150000 Heilongjiang city of Harbin province Daoli District Shangzhi Street No. 188 Applicant before: Harbin Power Supply Company, State Grid Heilongjiang Electric Power Co., Ltd. Applicant before: North China Electric Power University (Baoding) Effective date of registration: 20190918 Address after: 150000 Heilongjiang city of Harbin province Daoli District Shangzhi Street No. 188 Applicant after: Harbin Power Supply Company, State Grid Heilongjiang Electric Power Co., Ltd. Applicant after: North China Electric Power University (Baoding) Applicant after: State Grid Co., Ltd. Address before: 150000 Heilongjiang city of Harbin province Daoli District Shangzhi Street No. 188 Applicant before: Harbin Power Supply Company, State Grid Heilongjiang Electric Power Co., Ltd. Applicant before: North China Electric Power University (Baoding) |
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