CN202403830U - Optical fiber composite contact box used for measuring temperature of high-voltage switch contact - Google Patents
Optical fiber composite contact box used for measuring temperature of high-voltage switch contact Download PDFInfo
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- CN202403830U CN202403830U CN2011204700828U CN201120470082U CN202403830U CN 202403830 U CN202403830 U CN 202403830U CN 2011204700828 U CN2011204700828 U CN 2011204700828U CN 201120470082 U CN201120470082 U CN 201120470082U CN 202403830 U CN202403830 U CN 202403830U
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- optical fiber
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Abstract
The utility model discloses an optical fiber composite contact box used for measuring the temperature of a high-voltage switch contact, comprising a contact box body; wherein, the contact box body has a containing chamber used for containing a static contact; the optical fiber composite contact box also comprises a temperature measuring plug-in unit, and an optical fiber, a heat-conducting insert, and an optical fiber interface insert which are cast in the temperature measuring plug-in unit; one end of the optical fiber is connected with the optical fiber interface insert, the other end of the optical fiber is provided with a fiber grating, the fiber grating is embedded in the heat-conducting insert, the heat-conducting insert is exposed outside the temperature measuring plug-in unit; the contact box body is provided with a through hole communicated with the containing chamber; and the temperature measuring plug-in unit is contained in the through hole, in order to enable the heat-conducting insert to be attached with the static contact. The optical fiber composite contact box of the utility model can immediately obtain present temperature information of the static contact, and has the advantages of high precision, strong anti-interference capability, and simple enforcement.
Description
Technical field
The utility model relates to the online measuring technique field of high-tension switch gear contact, relates to a kind of Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature in particular.
Background technology
The high-tension switch cabinet of generating plant, transformer station is one of critical component that guarantees the electrical power trans mission/distribution system safe and reliable operation, and whether the high-tension switch cabinet operate as normal is concerning the stability of electric system, therefore guarantees that the high-tension switch cabinet reliability service is even more important.According to statistics, there is quite a few relevant in the reason that electric system has an accident with heat problem.
In switchgear long-time running process, positions such as the high-voltage switch contact in the switch cubicle, bus overlapped points can make contact resistance excessive because the installation overlap joint is improper or aging usually, and cause major loop temperature anomaly.If fail in time to know this variation; Continue operation, then can further aggravate heating and oxidation, and produce vicious cycle; And then occur that fusing comes off such as fingertip, contact burns and phenomenon such as adjacent insulating material deterioration; Last even can be on fire, have an accident, seriously even cause serious accidents such as puncture, blast.
For a long time; Because the major loop of high-tension switch cabinet (mainly being meant contact arm, contact and bus) is in high potential environment; Under direct measuring condition, can't solve under High-Voltage Insulation, the high electronegative potential all kinds of problems such as electrical isolation, make that isolating switch major loop on-line temperature monitoring is a difficult problem always.
At present, mainly be directly or indirectly to detect the major loop temperature rise: variable color sheet, infrared imaging and thermometry, bury temperature sensor thermometric or optical fiber grating temperature-measuring underground through plain conductor through following several kinds of means.Wherein, optical fiber grating temperature-measuring system has advantages such as anti-electromagnetic interference (EMI), anticorrosive, electrical isolation and high sensitivity, in power industry, is widely used.But because the high-voltage switch contact complex structure, the space is narrow and small in the contact box, has increased the installation difficulty of fiber-optic grating sensor widely.In addition; Be used for to cause the contact box inner structure to change device and anchor clamps that fiber-optic grating sensor is fixed on the high-voltage switch contact; Contact reduces with the space clear distance between the switch cubicle housing, and the class of insulation descends, and has increased generation high-voltage breakdown, short risk greatly.And if simply paste fixing, can shake out, cut-off owing to isolating switch shakes into again action, with the passing of time, reason such as toy contact comes off, and causes monitoring to lose efficacy, and increases maintenance cost and operations staff's burden.
In view of this, the inventor has this case to produce to the above-mentioned defective further investigation in the on-line monitoring technique of existing high-tension switch cabinet then.
The utility model content
The purpose of the utility model is to provide a kind of Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature; It can not add on high-voltage switch contact or in the contact box under the situation of any equipment; Measure the temperature of high-voltage switch contact under the high voltage environment, existing to solve owing to after the installation of optical fiber grating temperature-measuring sensor is installed on the busbar, being prone to cause the problem that the air clear distance reduces, the class of insulation descends or comes off easily.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature comprises the contact box body, and this contact box body has the room that can supply static contact to be installed with; Wherein, This Optical Fiber Composite contact box also comprises the thermometric plug-in unit and is cast in optical fiber, heat conduction inserts and the optical fiber interface inserts in the thermometric plug-in unit, and this optical fiber one end links to each other with the optical fiber interface inserts, and the other end then is formed with fiber grating; This fiber grating is embedded in the heat conduction inserts; This heat conduction inserts is exposed to this thermometric plug-in unit, is formed with the through hole that communicates with room on this contact box body, and this thermometric plug-in unit is installed with in through hole and makes this heat conduction inserts can fit in this static contact.
Further, this heat conduction inserts is formed with blind hole in an opposing side in static contact, and the outside surface that removes the fiber grating position on this optical fiber all is set with heat-shrinkable T bush, and the end of this fiber grating and heat-shrinkable T bush is heavy establishes in the blind hole.
Further, the length of this fiber grating is 10～20mm.
Further, this through hole is cylindrical hole or truncated cone-shaped hole, and this thermometric plug-in unit also should be cylindrical or truncated cone-shaped mutually.
Further, this contact box body and thermometric plug-in unit all adopt the poured with epoxy resin moulding.
Further, this contact box body also has and is used for static contact is fixed on the fixedly inserts on the contact box body, and this fixedly has internal thread on the inserts, the outside external thread that can be threaded with this internal thread that has on this heat conduction inserts.
After adopting said structure; The Optical Fiber Composite contact box that the utility model relates to; When it was fixed in the room of contact box body when static contact, this heat conduction inserts can keep good heat transferred with static contact, promptly lets the heat conduction inserts have same temperature with static contact; The utility model is based on the fiber grating temperature sensor principle thus; It is sensing element with the fiber grating; Can measure the temperature of heat conduction inserts easily through the spectroanalysis instrument that links to each other with the optical fiber interface inserts; So can know the temperature information of current static contact, and it is strong and implement characteristic of simple to have a precision height, antijamming capability.
Description of drawings
Fig. 1 is a kind of structural representation that is used to measure the Optical Fiber Composite contact box preferred embodiment of high-voltage switch contact temperature for the utility model relates to;
Fig. 2 is the structural representation of thermometric plug-in unit among Fig. 1;
Fig. 3 is an Optical Fiber Composite contact box shown in Figure 1 and the static contact structural representation during assembly mutually.
Among the figure:
Optical Fiber Composite contact box 100
Contact box body 1 room 11
Through hole 12 is inserts 13 fixedly
Thermometric plug-in unit 2 optical fiber 21
Heat conduction inserts 22 blind holes 221
Optical fiber interface inserts 23 fiber gratings 24
Heat-shrinkable T bush 25 static contacts 200.
Embodiment
In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.
To shown in Figure 3, it is a kind of Optical Fiber Composite contact box 100 preferred embodiments that are used to measure high-voltage switch contact temperature for the utility model relates to like Fig. 1.This Optical Fiber Composite contact box 100 comprises contact box body 1 and thermometric plug-in unit 2, wherein:
This contact box body 1, the through hole 12 that has room 11 and be connected with room 11, this room 11 can supply static contact 200 to be located in wherein, these through hole 12 preferred cylindrical hole or truncated cone-shaped holes of adopting;
This thermometric plug-in unit 2; Have optical fiber 21, heat conduction inserts 22 and optical fiber interface inserts 23; This optical fiber 21, heat conduction inserts 22 and optical fiber interface inserts 23 all are that moulding by casting is in thermometric plug-in unit 2; This heat conduction inserts 22 can be processed by the good material of thermal conductivity, such as in the present embodiment its adopt for metal; These optical fiber 21 1 ends link to each other with optical fiber interface inserts 23; The other end then is formed with fiber grating 24; This fiber grating 24 is embedded in the heat conduction inserts 22; This heat conduction inserts 22 is exposed to this thermometric plug-in unit 2 and can supplies with static contact 200 heat transferred to take place, and this thermometric plug-in unit 2 is installed with in through hole 12 and makes this heat conduction inserts 22 can fit in this static contact 200; Preferably, the length of this fiber grating 24 is 10～20mm, with through hole 12 shapes accordingly, this thermometric plug-in unit 2 also is cylindrical or truncated cone-shaped.
As further improved plan; This heat conduction inserts 22 is formed with blind hole 221 in an opposing side in static contact 200; The outside surface that removes fiber grating 24 positions on this optical fiber 21 all is set with heat-shrinkable T bush 25; The end of this fiber grating 24 and heat-shrinkable T bush 25 is all heavy establishes in the blind hole 221, and keeps fiber grating 24 outside surfaces not contact with the surface of heat conduction inserts 22.Based on optical fiber grating temperature-measuring is the change in refraction of utilizing light, and temperature is demarcated; If promptly, can change at the local medium that contacts with other body surface contacts, also change thereby cause reflecting frequency spectrum, promptly form measuring error.So, it can let this fiber grating 24 when sensing temperature, have highly sensitive characteristics.A kind of material as whole optical fiber composite contact box 100 is selected, and this contact box body 1 all can adopt epoxy resin or other macromolecular material moulding by casting with this thermometric plug-in unit 2; Preferably, can also play the effect of sealing blind hole through the thermal shrinkable sleeve of sheathed one deck or multilayer at the sealing part of this blind hole.
In addition; Can carry out stable heat transferred in order to let between this heat conduction inserts 22 and the static contact 200; This contact box body 1 also has and is used for static contact 200 is fixed on the fixedly inserts 13 on the contact box body 1, and this fixedly has internal thread on the inserts 13, and the outside has external thread on this heat conduction inserts 22; This external thread can be threaded with this internal thread, thereby heat conduction inserts 22 can stably be contacted with static contact 200 and obtains the temperature information on the static contact 200.
Like this; The Optical Fiber Composite contact box 100 that the utility model relates to; When it is fixed in the room 11 of contact box body 1 when static contact 200, this heat conduction inserts 22 can and static contact 200 keep good heat transferred, promptly let heat conduction inserts 22 have same temperature with static contact 200; The utility model is based on fiber grating 24 TEMP principles thus; It is a sensing element with fiber grating 24; Can measure the temperature of heat conduction inserts 22 easily through the spectroanalysis instrument that links to each other with optical fiber interface inserts 23; So can know the temperature information of current static contact 200, and it is strong and implement characteristic of simple to have a precision height, antijamming capability.
The principle of fiber-optical grating temperature sensor is:
The reflectivity of fiber grating or the wavelength of transmission peaks are relevant with grating index modulation cycle and fiber core refractive index.When wideband light source incides Bragg grating, can reflect because of the change of refractive index, transmission or reflection, wherein reflection will meet bragg condition, and promptly the reflection of light wavelength will satisfy following optical fiber equation:
In the formula:
is the centre wavelength of Fiber Bragg Grating;
is fiber cores district effective refractive index;
is the Bragg grating cycle.Can know by following formula; The cloth loudspeaker lattice wave personal attendant of Fiber Bragg Grating the change of
and
and changes, and physical process such as thermal load or extraneous power etc. that any making
and
change all will make reflection or the transmission peaks wave length shift that causes Fiber Bragg Grating.Detection through to long reflection of cloth loudspeaker lattice wave or transmitted spectrum realizes the absolute monitoring of temperature amount and dependent variable.Its range of sensitivity is approximately 10-11pm/ ℃, that is to say, every variation 1 degree of temperature can cause the wavelength change of 10 micromicrons to 11 micromicrons.
For the utility model can fully be disclosed; The utility model also provides a kind of preparation method who is used to measure the Optical Fiber Composite contact box 100 of high-voltage switch contact temperature; Wherein, this preparation method comprises the preparation process of contact box body 1 and the preparation process of thermometric plug-in unit 2.
The preparation of this contact box body 1 is and molds the contact box body 1 with room 11 and through hole 12, and it specifically is preferably the mode that adopts moulding by casting.
The preparation of this thermometric plug-in unit 2 then comprises the steps:
1., pre-assembled: fiber grating 24 is linked to each other with optical fiber 21 and is embedded in the heat conduction inserts 22, also the end in addition of optical fiber 21 is linked to each other with optical fiber interface inserts 23 and forms assembly simultaneously; Preferably, being connected between this fiber grating 24 and the optical fiber 21 is to adopt fusing mode; And in this step; Also be included in the step of removing the sheathed heat-shrinkable T bush 25 of outside surface of fiber grating 24 positions on the optical fiber 21; And fiber grating 24 is established in the blind hole 221 of heat conduction inserts 22 with heat-shrinkable T bush 25 ends are all heavy, thereby and keeps fiber grating 24 outside surfaces to refuse the surface contact of heat conduction inserts 22.
2., location: will be fixed on through the assembly that prepackage prepares in the casting mold; In this step, this assembly is preferably to be fixed in the casting mold through a fastening inserts;
3., cast: the liquid material of insulator body is injected in the casting mold and fills up the entire die die cavity; This liquid material can adopt epoxy resin;
4., curing molding: will pour into a mould good mould and be placed on to solidify in the incubator and be cured, and wait to solidify after obtain finished product behind the demoulding and the cutting mouth of a river material.
The preparation method who adopts the utility model to relate to, it adopts the mode of cast, can go out above-mentioned Optical Fiber Composite contact box 100 by rapid shaping, and has simple and the effect that is easy to scale-up.
Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.
Claims (6)
1. an Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature comprises the contact box body, and this contact box body has the room that can supply static contact to be installed with; It is characterized in that; This Optical Fiber Composite contact box also comprises the thermometric plug-in unit and is cast in optical fiber, heat conduction inserts and the optical fiber interface inserts in the thermometric plug-in unit, and this optical fiber one end links to each other with the optical fiber interface inserts, and the other end then is formed with fiber grating; This fiber grating is embedded in the heat conduction inserts; This heat conduction inserts is exposed to this thermometric plug-in unit, is formed with the through hole that communicates with room on this contact box body, and this thermometric plug-in unit is installed with in through hole and makes this heat conduction inserts can fit in this static contact.
2. the Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature as claimed in claim 1; It is characterized in that; This heat conduction inserts is formed with blind hole in an opposing side in static contact; The outside surface that removes the fiber grating position on this optical fiber all is set with heat-shrinkable T bush, and the end of this fiber grating and heat-shrinkable T bush is heavy establishes in the blind hole.
3. the Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature as claimed in claim 1 is characterized in that the length of this fiber grating is 10～20mm.
4. the Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature as claimed in claim 1 is characterized in that, this through hole is cylindrical hole or truncated cone-shaped hole, and this thermometric plug-in unit also should be cylindrical or truncated cone-shaped mutually.
5. the Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature as claimed in claim 1 is characterized in that this contact box body and thermometric plug-in unit all adopt the poured with epoxy resin moulding.
6. the Optical Fiber Composite contact box that is used to measure high-voltage switch contact temperature as claimed in claim 1; It is characterized in that; This contact box body also has and is used for static contact is fixed on the fixedly inserts on the contact box body; Should fixedly have internal thread on the inserts, the outside external thread that can be threaded that has on this heat conduction inserts with this internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204700828U CN202403830U (en) | 2011-11-23 | 2011-11-23 | Optical fiber composite contact box used for measuring temperature of high-voltage switch contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204700828U CN202403830U (en) | 2011-11-23 | 2011-11-23 | Optical fiber composite contact box used for measuring temperature of high-voltage switch contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403830U true CN202403830U (en) | 2012-08-29 |
Family
ID=46701472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204700828U Withdrawn - After Issue CN202403830U (en) | 2011-11-23 | 2011-11-23 | Optical fiber composite contact box used for measuring temperature of high-voltage switch contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507043A (en) * | 2011-11-23 | 2012-06-20 | 厦门Abb开关有限公司 | Optical fiber composite contact case for measuring temperature of high-voltage switch contacts and production method thereof |
-
2011
- 2011-11-23 CN CN2011204700828U patent/CN202403830U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507043A (en) * | 2011-11-23 | 2012-06-20 | 厦门Abb开关有限公司 | Optical fiber composite contact case for measuring temperature of high-voltage switch contacts and production method thereof |
| CN102507043B (en) * | 2011-11-23 | 2013-11-27 | 厦门Abb开关有限公司 | Optical fiber composite contact case for measuring temperature of high-voltage switch contacts and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20131127 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20131127 |
|
| RGAV | Abandon patent right to avoid regrant |