CN2645058Y - Current carrying conductor temperature measurement sensing device having induction power source - Google Patents
Current carrying conductor temperature measurement sensing device having induction power source Download PDFInfo
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- CN2645058Y CN2645058Y CN 03271192 CN03271192U CN2645058Y CN 2645058 Y CN2645058 Y CN 2645058Y CN 03271192 CN03271192 CN 03271192 CN 03271192 U CN03271192 U CN 03271192U CN 2645058 Y CN2645058 Y CN 2645058Y
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- temperature
- sensing module
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- temperature measurement
- temperature sensing
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Abstract
The utility model relates to a current carrying conductor sensing device for temperature measurement with induction power, which comprises a magnetic ring made of magnetic permeability material and circled with induction coil and a temperature sensing module LM35DZ. The temperature measurement probe of the temperature sensing module is closely contacted with current carrying conductor which is to be measured. The two ends of the induction coil are connected with the temperature sensing module LM35DZ (supply electricity for the module) through a rectification circuit, a steady voltage circuit and a filter circuit. The current carrying conductor drills through the magnetic ring and is closely contacted with temperature measurement probe. Utilizing the alternating magnetic field produced by the working current flowing through current carrying conductor, the electromotive force is induced on the magnetic ring. Then the electromotive force can supply working power for the temperature sensing module directly through the rectification circuit, steady voltage circuit and filter circuit without connecting with electrical source outside as required in prior art. The sensing device has good insulation performance leading to a wider application rang. At the same time, the device has the advantage of simple structure, easy use and installation and low cost.
Description
Technical field
The utility model relates to a kind of sensing device, is specially a kind of current temperature measurement sensing equipment with induction power supply.
Background technology
Ultimate principle according to electricity, the appearance of physical phenomenons such as that the generation of any fault all must be followed is sound, light, electricity, heat, wherein the variation of heat energy more more sees, and has continuously and the characteristics of accumulation, so, become the target that various monitoring measures locks.For some power-supply units or electrical appliance,, can effectively realize monitoring to consumer or apparatus failure by the temperature variation of monitoring current in it (as bus row, high-tension cable bus-bar etc.) as high-tension switch cabinet, switch board, power distribution cabinet.Existing temp measuring method mainly adopt thermistor, thermoelectricity occasionally sensing element such as semiconductor temperature sensor realize.Adopt these temperature-sensing element thermometrics all to need outer power supply source, all need to be connected with temperature-sensing element to power to temperature-sensing element or to transmit signal with plain conductor, but in the high high-voltage system of insulating requirements, plain conductor can't guarantee the strick precaution requirement of the insulating requirements and the preventive trial project of electrical equipment, thereby has limited its usable range.
Infrared temperature-test technology has certain advance, but majority is a non-contact measurement, is subjected to the interference of surrounding environment and electromagnetic field easily, relatively using temperature probe in the narrow space, has the not high problem of measuring accuracy simultaneously.
Summary of the invention
The utility model solves existing electrical equipment, the temperature measurement sensing equipment of current particularly, its temperature-sensing element must connect outer power supply source, its transfer wire can't satisfy insulating requirements, thereby the problem that its usable range is restricted provides a kind of current temperature measurement sensing equipment with induction power supply.
The utility model is to adopt following technical scheme to realize: the current temperature measurement sensing equipment with induction power supply, comprise a magnet ring of making by the magnetic permeability magnetic material, on magnet ring, be wound with inductive coil, also comprise a temperature sensing module LM35DZ, the temperature probe of temperature sensing module closely contacts with tested current, and the inductive coil two ends are through rectification circuit, voltage stabilizing and filtering circuit link to each other with temperature sensing module LM35DZ (providing power supply to it).
During use, current passes magnet ring and current is closely contacted with the temperature probe of temperature sensing module.The flow through alternating magnetic field that working current produced of current of utilization, pass through magnet ring, on the inductive coil of coiling on the magnet ring, induce electromotive force, provide the temperature sensing module required working power on the spot through rectification circuit and voltage stabilizing, filtering circuit, and need not to connect outer power supply source as prior art.
Adopt non magnetic common permeability magnetic material (as siliconized plate etc.) to make if constitute the magnet ring of magnetic circuit in the utility model, when the current electric current transmitted increases, the induced potential of the coil on it also improves thereupon, and it is too high induced voltage to take place, and then burns out the phenomenon of circuit component.Therefore, for avoiding the superpotential phenomenon to take place, the magnet ring that the utility model adopts the magnetic permeability magnetic material to make, the magnetization curve of analysis-by-synthesis and selection magnetic permeability magnetic material, make magnet ring when current transmits less current (50-100A), magnet ring just enters the saturation region, makes the inductive coil on it provide the temperature sensing module required operating voltage all the time.
The temperature sensing module LM35DZ that the utility model is selected for use also is provided with light-power conversion circuit in the module except that the high characteristics of tool measuring accuracy, temperature signal can be converted to electric signal, and electric signal is modulated into light signal again, exports by optical fiber; Optical fiber output has insulation tolerance degree height, antijamming capability by force, is not subjected to the characteristics of the surrounding environment influence and the interference of electromagnetic field, thereby is more suitable for using in the higher occasion of electric pressure.
Current temperature measurement sensing equipment with induction power supply described in the utility model, has the induction power supply device, dispense with outer connecting power, need not change battery, no external wire and the special-purpose temperature sensing module of selecting for use optical fiber to export, whole temperature measurement sensing equipment has high insulating property, especially can satisfy the dielectric strength requirement when using under the high voltage occasion, so it has usable range relatively widely.It also possesses simple for structure, characteristics easy to install and use, that cost is low.This temperature measurement sensing equipment can be widely used in the industry electric energy transmitting processes such as electric power, metallurgy, chemical industry, colliery, machinery, fault to electrical equipments such as high-tension cable bus-bar, bus row, high-tension switch cabinet, switch board, power distribution cabinets is monitored, and the multiple spot that is particularly suitable for significant points such as generating plant, transformer station, power dispatching center is concentrated monitoring.Undoubtedly for electric system for in the electric process, provide a kind of reliable analysis means to precognition, prediction, the investigation of the system failure, equipment failure.
Description of drawings
Fig. 1 is an appearance structure synoptic diagram of the present utility model;
Fig. 2 is for showing the sectional view of the utility model inner structure;
The internal circuit schematic diagram that Fig. 3 relates to for the utility model;
Wherein: among Fig. 2,1 is magnet ring, and 2 is inductive coil, and 3 is tested current, 4 is circuit board, and 5 is housing, and 6 is the temperature probe of temperature sensor, and 7 is stiffening plate, 8 is the output optical fibre of temperature sensor, and 9 is geometrical clamp, and 10 is trip bolt, and 11 is the magnet ring trip bolt
Embodiment
Current temperature measurement sensing equipment with induction power supply, comprise a magnet ring 1 of making by the magnetic permeability magnetic material, on magnet ring, be wound with inductive coil 2, also comprise a temperature sensing module LM35DZ, the temperature probe 6 of temperature sensing module closely contacts with tested current, and inductive coil 2 two ends link to each other with temperature sensing module LM35DZ through rectification circuit, voltage stabilizing and filtering circuit.
This current temperature measurement sensing equipment with induction power supply also comprises a housing 5, housing is passed on one side of magnet ring 1, inductive coil 2 is positioned on the part of housing around magnet ring, simultaneously, temperature sensing module LM35DZ and rectification circuit, filter circuit of pressure-stabilizing (temperature sensing module and rectification circuit, filter circuit of pressure-stabilizing forming circuit plate 4) all place in the housing 5, and the temperature probe 6 of temperature sensing module are fixed on the upper surface of housing 5.Adopt above-mentioned version, make the more compact structure of whole sensing device, rationally, be convenient to being connected and fixed of sensing device and tested current; Simultaneously, inductive coil and corresponding circuit are placed in the housing, make whole sensing device not be exposed to outer part (except the magnet ring), housing itself plays the shielding insulation effect to coil and circuit, can remove from independent, the extra insulation measures of sensing device part component parts (as inductive coil, transfer wire etc.), the structure of sensing device more is tending towards rationally, simultaneously, make sensing device that the good insulation performance be arranged, be applicable to the high voltage occasion.
Upper side edge at magnet ring is provided with trip bolt 10.When sensing device is inserted on the tested current (current passes magnet ring), tighten trip bolt, make current (bus row) overlay upper surface, thereby make current keep closely contacting with the temperature probe of the temperature sensing module that is fixed in the housing upper surface in housing.
Rectification circuit in the sensing device is the bridge rectifier circuit that is made of diode D7-D10; Mu balanced circuit is the voltage stabilizing diode D2-D6 that is parallel to the rectification circuit dc output end; Filtering circuit is filter capacitor C1 and the C2 that is parallel to the rectification circuit dc output end.
The used temperature sensing module of this sensing device also can be selected the temperature sensing module (or temperature sensor) of other model for use.Under the use occasion of low voltage, even can select the temperature sensing module or the temperature sensor of non-optical fiber output for use, this is the constructional variant that those of ordinary skills are easy to expect or the change of use-pattern.The number of turn of magnetic permeability magnetic material, sectional area and inductive coil that magnet ring is used can be determined according to the working current size and the selected temperature sensing module or required operating voltage, the electric current of temperature sensor of current.
0 ℃-100 ℃ of this sensing device temperature-measuring ranges, temperature measurement error: ± 1.5 ℃. can survey the range of current of current: 100A-3150A, the operating voltage of temperature sensing module: DC9V ± 1.5V, working current: 20mA.
During use, unclamping magnet ring trip bolt 11 opens the magnet ring connector, the magnet ring of this sensing device is enclosed within on the tested current, again magnet ring trip bolt 11 is screwed on and made magnet ring connector closure, and tighten trip bolt 10, make current keep closely connected and contact with the temperature probe of the temperature sensing module that is fixed in the housing upper surface.Inductive coil induces more constant electromotive force by magnet ring, provides required working power to the temperature sensing module after rectification, voltage stabilizing, filtering.Temperature probe is sent the temperature signal that records into the temperature sensing module, by resume module temperature signal is converted to electric signal, and finally is modulated into light signal, by optical fiber output, for follow-up further signal processing apparatus provides sampled signal.By the temperature variation of the current on the monitoring electrical equipment, and then realize providing decision-making foundation to generation, state variation, the investigation of electrical equipment malfunction.
Claims (3)
1, a kind of current temperature measurement sensing equipment with induction power supply, it is characterized by: comprise a magnet ring of making by the magnetic permeability magnetic material (1), on magnet ring, be wound with inductive coil (2), also comprise a temperature sensing module LM35DZ, the temperature probe of temperature sensing module (6) closely contacts with tested current, and inductive coil (2) two ends link to each other with temperature sensing module LM35DZ through rectification circuit, voltage stabilizing and filtering circuit.
2, the current temperature measurement sensing equipment with induction power supply as claimed in claim 1, it is characterized by: also comprise a housing (5), housing is passed on one side of magnet ring (1), inductive coil (2) is positioned on the part of housing around magnet ring, simultaneously, temperature sensing module LM35DZ and rectification circuit, filter circuit of pressure-stabilizing all place in the housing (5), and the temperature probe (6) of temperature sensing module are fixed on the upper surface of housing (5).
3, the current temperature measurement sensing equipment with induction power supply as claimed in claim 1 or 2 is characterized by: the upper side edge at magnet ring is provided with trip bolt (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271192 CN2645058Y (en) | 2003-07-23 | 2003-07-23 | Current carrying conductor temperature measurement sensing device having induction power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03271192 CN2645058Y (en) | 2003-07-23 | 2003-07-23 | Current carrying conductor temperature measurement sensing device having induction power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645058Y true CN2645058Y (en) | 2004-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03271192 Expired - Fee Related CN2645058Y (en) | 2003-07-23 | 2003-07-23 | Current carrying conductor temperature measurement sensing device having induction power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645058Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007391B (en) * | 2008-04-18 | 2013-12-25 | 梅特格拉斯公司 | Temperature sensor and related remote temperature sensing method |
| CN103636087A (en) * | 2011-07-04 | 2014-03-12 | 三菱电机株式会社 | Temperature monitoring device and temperature monitoring method |
| CN104062490A (en) * | 2014-07-16 | 2014-09-24 | 北京师范大学 | Current and temperature measuring sensor |
| CN113820037A (en) * | 2021-09-07 | 2021-12-21 | 云南电网有限责任公司临沧供电局 | Elbow type head temperature on-line monitoring device based on cloud platform |
-
2003
- 2003-07-23 CN CN 03271192 patent/CN2645058Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007391B (en) * | 2008-04-18 | 2013-12-25 | 梅特格拉斯公司 | Temperature sensor and related remote temperature sensing method |
| CN103636087A (en) * | 2011-07-04 | 2014-03-12 | 三菱电机株式会社 | Temperature monitoring device and temperature monitoring method |
| CN103636087B (en) * | 2011-07-04 | 2016-02-17 | 三菱电机株式会社 | temperature monitoring device and temperature monitoring method |
| CN104062490A (en) * | 2014-07-16 | 2014-09-24 | 北京师范大学 | Current and temperature measuring sensor |
| CN113820037A (en) * | 2021-09-07 | 2021-12-21 | 云南电网有限责任公司临沧供电局 | Elbow type head temperature on-line monitoring device based on cloud platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040929 Termination date: 20100723 |