CN204495860U - A kind of transformer belt pyroelectric monitor instrument energy taking device - Google Patents
A kind of transformer belt pyroelectric monitor instrument energy taking device Download PDFInfo
- Publication number
- CN204495860U CN204495860U CN201420603148.XU CN201420603148U CN204495860U CN 204495860 U CN204495860 U CN 204495860U CN 201420603148 U CN201420603148 U CN 201420603148U CN 204495860 U CN204495860 U CN 204495860U
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- Prior art keywords
- transformer
- taking device
- energy taking
- monitoring
- magnetic core
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- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 21
- 230000005674 electromagnetic induction Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000012806 monitoring device Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
A kind of transformer belt pyroelectric monitor instrument energy taking device 2, being as general as one can the loop configuration of folding, mainly comprises metal shell 5, getting can coil 10 (inside having magnetic core 9) and rectifier control circuit 6.Wherein, metal shell 5 comprises hinge 8, pinout connector 7 and buckle 12; Meanwhile, also another attached fixture 19 between energy taking device 2 and low-tension bushing 1; It is characterized in that: utilize electromagnetic induction principle, can coil 10 (in have magnetic core 9) and rectifier control circuit 6 by chuck getting on bushing shell for transformer 1, obtain galvanic current source, for the monitoring device 4 on this transformer provides power supply, and do not need for monitoring device 4 other Power supplies external; The utility model tool has the following advantages: 1) from transformer self-energy-taking, and the effectively less external electric power system of transformer monitoring equipment, on the impact of measuring, makes Monitoring Data relatively more accurate; 2) decrease the connection of in-site measurement, indirectly improve safe reliability; 3) monitoring instrument is charged and start, have a power failure and shut down with transformer, and the synchronism of measurement is good; 4) the external power supply of in emergency circumstances monitoring equipment can be solved lost efficacy and transformer lost to the problem of monitoring.
Description
Technical field
The utility model relates to a kind of transformer belt pyroelectric monitor instrument energy taking device.
Background technology
The live monitoring of transformer is divided into long-continued on-line monitoring substantially, and the live detection of short time.Wherein on-line monitoring for be various machinery and the electrical specification of transformer, mainly comprise: oil dissolved gas stratographic analysis, shelf depreciation, the on-line analysis of iron core grounding electric current, winding deformation on-line analysis and vibration analysis etc.Short time live detection then generally adopts portable detection equipment, under operation, to the Site Detection that equipment state amount is carried out, mainly comprise: the detection of high frequency partial discharge examination, infrared thermal imaging, ultrasonic signal detection, ultra high frequency PD detection, transient earth voltage detection and ground current measurement etc.In actual measurement, the checkout equipment used by above-mentioned test item, wherein small part uses internal battery to power, and most of instrument still adopts power lead to power.For the checkout equipment of long-term on-line operation, can not battery be used, power lead must be adopted to power.Detecting instrument is while monitoring transformer, and owing to using power lead to power, be equivalent to introduce another one system, a large amount of external disturbance enters monitoring equipment along power lead, and the accuracy making it measure is had a strong impact on.In addition, when checkout equipment is more, all kinds of power leads of on-the-spot distribution also may bring potential safety hazard.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of energy taking device that directly can obtain electric energy supply transformer monitoring instrument from transformer.
In order to achieve the above object, content of the present utility model is as follows:
Energy coil is got in utilization, by electromagnetic induction principle, induces power current from bushing shell for transformer, DC power output after rectification and control circuit process.Described energy taking device 2 by metal shell 5, get and can form with rectifier control circuit 6 by coil 10 (inside having magnetic core 9).Wherein, metal shell 5 comprises hinge 8, pinout connector 7 and buckle 12; Meanwhile, also another attached fixture 19 between energy taking device 2 and sleeve pipe 1.Described energy taking device 2 structure is can the loop configuration of folding, the inner magnetic core 9 adopted is a pair U-shaped magnetic core, coil 10 wire directly accesses rectifier control circuit 6, and the output of rectifier control circuit 6 connects pinout connector 7, and hinge 8 and buckle 12 lay respectively at axle side and the open side of energy taking device 2.Fixture 19 be can folding columnar structured.The installation site of described energy taking device 2 is at the root of bushing shell for transformer 1.First cylindrical shape fixture 19 is enclosed within bushing shell for transformer 1 root during use, is then opened by energy taking device 2, then chuck is on fixture 19, make sleeve pipe 1 root and fixture 19, fixture 19 and the fixation of energy taking device 2 close contact, finally buckle well buckle 12 and complete installation.Metal shell 5 material of described energy taking device 2 is that conductivity is greater than 1.0x10
6the metal material of m/ Ω.Magnetic core 9 material of described energy taking device 2 is the soft magnetic material that relative permeability is greater than 2000.The fixture 19 that described energy taking device 2 is subsidiary uses elastomeric material to make.
Compared with prior art, the utility model provides technique scheme tool to have the following advantages:
1) from transformer self-energy-taking, effectively reduce the external electric power system of transformer monitoring equipment to the impact of measuring, decrease power lead Space Coupling in in-site measurement and, to the interference of monitoring equipment, make Monitoring Data relatively more accurate.
2) when monitoring equipment is more, use this energy taking device can reduce on-the-spot connection, effectively prevent possible direct of staff and monitoring equipment power lead and contact, indirectly improve safe reliability.
3) use this energy taking device, can accomplish that monitoring equipment is charged and start, have a power failure and shut down with transformer, the synchronism of measurement is good.
4) use this energy taking device, the external power supply of in emergency circumstances monitoring equipment can be solved and lost efficacy and transformer lost to the problem of monitoring.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of the using state of the utility model specific embodiment;
Fig. 2 is for getting energy modular construction closure state schematic diagram;
Fig. 3 is for getting energy modular construction open mode schematic diagram;
Fig. 4 is the equivalent circuit diagram that electromagnetic induction gets energy coil;
Fig. 5 is rectifier control circuit schematic diagram;
Fig. 6 is cylindrical shape fixture schematic diagram.
Embodiment
Composition graphs 1 ~ Fig. 6 and real transformer are described further the utility model.
Fig. 1 is the one-piece construction schematic diagram of the utility model using state and installation site, and the described energy taking device 2 that can obtain electric energy supply transformer monitoring equipment 4 from bushing shell for transformer 1, the root that need be enclosed within bushing shell for transformer 1 uses.The output of energy taking device 2 accesses transformer monitoring instrument 4 by wire 3, for it provides electric energy.The position of chuck elects transformer low voltage sleeve pipe 1 root as, be because getting of the utility model energy taking device 2 can principle be that electromagnetic induction gets energy, and the electric current that step down side flows through can reach kiloampere.According to formula N
1i
1=N
2i
2known, can coil for identical getting, chuck can provide electric energy for more multiple instruments on low-tension bushing.
Fig. 2 and Fig. 3 is the one-piece construction schematic diagram of energy taking device 2, can find out, it is as general as one can the loop configuration of folding: primarily of metal shell 5, get and can coil 10 (inside having magnetic core 9) and control rectification circuit 6 form.Wherein, metal shell 5 comprises hinge 8, pinout connector 7 and buckle 12.Magnetic core 9 is a pair U-shaped magnetic core, so metal shell 5 has been designed to the structure of square-outside and round-inside.The size of the rounded internal surface 11 of metal shell 5, can set according to the root size of transformer low voltage sleeve pipe 1.Meanwhile, the rounded internal surface 11 of energy taking device 2 need leave certain distance, in order to place cylindrical shape fixture 19 with transformer low voltage sleeve pipe 1 root surface.
The size model of magnetic core 9 and get and can the supply voltage required when need connect the normal operation of monitoring device 4 depending on the size of transformer low voltage sleeve pipe 1 and institute of the number of turn of coil 10, size of current comprehensively determine.
Its basic theories is Faraday's electromagnetic induction law, in conjunction with Ampère circuital theorem and correlation formula:
H＝nI/l (1)
B＝μH＝μnI/l (2)
L＝ψ/I (4)
M＝L/n (5)
Wherein:
for the magnetic flux passed through in electricity taking coil magnetic core; B is magnetic induction density; H is iron core internal magnetic field intensity; S is that core cross section amasss; μ is magnetic permeability; L is the magnetic core length of magnetic path,
l is coil inductance, and M is mutual inductance.
On the basis of equivalent electrical circuit Fig. 4, the people with relevant knowledge can derive the size that draws magnetic core 9 needed for it and answer the number of turn of coiling 10 completely.If two halves magnetic core 9 all needs coiling, then should connect the coil 10 on two halves magnetic core 9 in hinge 8 side.
Fig. 5 is rectifier control circuit 6 schematic diagram in energy taking device 2, and as can be seen from the figure whole main circuit will comprise four parts: over-voltage protection module 13, rectification module 14, control module 15 and regulating filtering module 16.Wherein the effect of control module 15 is leakage currents when electric current is excessive, prevents that magnetic core is saturated affects output voltage waveforms.So the alternating current obtained according to electromagnetic induction principle just becomes after these four parts 13 ~ 16 can the direct current that uses of monitored equipment 4.In Fig. 4, each module all can adopt existing various homogeneous circuit.
Fig. 6 is the cylindrical shape fixture 19 between energy taking device 2 and transformer low voltage sleeve pipe 1 root, as shown be horizontal sectional drawing, the radial thickness of this fixture 19 can be set as 1cm ~ 2cm, length is suitable with energy taking device 2 thickness, realize folding by rotating shaft 17, the projection 18 of its inside is used for increasing friction with the root clamping transformer low voltage sleeve pipe 1.
Use the utility model time, first by cylindrical shape fixture 19 with 17 for axle is opened, chuck is at the root of surveyed transformer low voltage sleeve pipe 1; Again by energy taking device 2 with hinge 8 for axle is opened, chuck, in the outside of tubular fixture 19, makes the inner circular surface 11 of energy taking device 2 closely fix with the root three of tubular fixture 19 outside surface and transformer low voltage sleeve pipe 1; The buckle 12 of last fastening metal shell 5 opening part.Transformer monitoring device 4 connects pinout connector 7 through wire 3 just can obtain electric energy.
In the present embodiment:
The metal shell 5 of described energy taking device 2 adopts conductivity to be 9.93x10
6the ferrous material of m/ Ω, thickness 3mm.
The ferrite that described magnetic core 9 material got in energy coil 10 adopts relative permeability to be greater than 2000.
The material of the fixture 19 that described energy taking device 2 is subsidiary is rubber.
Claims (3)
1. a transformer belt pyroelectric monitor instrument energy taking device, it is characterized in that: this energy taking device (2) structure is can the loop configuration of folding, by metal shell (5), get and can coil (10) and rectifier control circuit (6) form; Wherein, metal shell (5) comprises hinge (8), pinout connector (7) and buckle (12), and the open side that hinge (8) is positioned at the axle side of energy taking device (2), buckle (12) is positioned at energy taking device (2); Get and can have magnetic core (9) in coil (10) inside, and magnetic core (9) is a pair U-shaped magnetic core; The output lead getting energy coil (10) directly accesses rectifier control circuit (6), and the output of rectifier control circuit (6) connects pinout connector (7); Energy taking device (2) puts the root in bushing shell for transformer (1).
2. transformer belt pyroelectric monitor instrument energy taking device according to claim 1, is characterized in that: metal shell (5) material of described energy taking device (2) is that conductivity is greater than 1.0x10
6the metal material of m/ Ω.
3. transformer belt pyroelectric monitor instrument energy taking device according to claim 1, is characterized in that: magnetic core (9) material of described energy taking device (2) is the soft magnetic material that relative permeability is greater than 2000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603148.XU CN204495860U (en) | 2014-10-16 | 2014-10-16 | A kind of transformer belt pyroelectric monitor instrument energy taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603148.XU CN204495860U (en) | 2014-10-16 | 2014-10-16 | A kind of transformer belt pyroelectric monitor instrument energy taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204495860U true CN204495860U (en) | 2015-07-22 |
Family
ID=53575165
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420603148.XU Expired - Fee Related CN204495860U (en) | 2014-10-16 | 2014-10-16 | A kind of transformer belt pyroelectric monitor instrument energy taking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204495860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095645A (en) * | 2019-04-26 | 2019-08-06 | 广西电网有限责任公司电力科学研究院 | A kind of contactless electrical quantity measurement arrangement |
| CN116840744A (en) * | 2023-09-01 | 2023-10-03 | 国网江苏省电力有限公司常州供电分公司 | Transformer winding deformation on-line detection sensing device |
-
2014
- 2014-10-16 CN CN201420603148.XU patent/CN204495860U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095645A (en) * | 2019-04-26 | 2019-08-06 | 广西电网有限责任公司电力科学研究院 | A kind of contactless electrical quantity measurement arrangement |
| CN116840744A (en) * | 2023-09-01 | 2023-10-03 | 国网江苏省电力有限公司常州供电分公司 | Transformer winding deformation on-line detection sensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20171016 |