CN203083706U - Online infrared temperature measuring device of electrical device joint - Google Patents
Online infrared temperature measuring device of electrical device joint Download PDFInfo
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- CN203083706U CN203083706U CN2012205672660U CN201220567266U CN203083706U CN 203083706 U CN203083706 U CN 203083706U CN 2012205672660 U CN2012205672660 U CN 2012205672660U CN 201220567266 U CN201220567266 U CN 201220567266U CN 203083706 U CN203083706 U CN 203083706U
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Abstract
The utility model provides an online infrared temperature measuring device of an electrical device joint. The online infrared temperature measuring device of the electrical device joint comprises a or a plurality of wireless temperature measuring modules, an information receiving module, a background management host module and/or a display module. The wireless temperature measuring module comprises mutually connected an infrared temperature measuring probe, a wireless communication module and a control circuit, and the information receiving module is connected with the wireless temperature measuring module, the background management host module and/or the display module via a wireless communication network. When being used, the online infrared temperature measuring device of the electrical device joint of the utility model can detect the temperature of a high voltage device to transmit to the information receiving module via the infrared temperature measuring probe in the wireless temperature measuring module, thereby online monitoring whether the temperature of the high voltage device is overhigh. According to the utility model, additional lines do not need to be added under a complicated power grid environment, the installation and maintenance of a system are convenient, and the effects on the safe running of a power grid are reduced, so that the safety and flexibility of the system are improved greatly.
Description
Technical field
The utility model relates to online infrared temperature measurement apparatus.
Background technology
At present along with the raising of Chinese industrial production automation level, power equipment repairing after the fault progressively carry out the transition to preventative maintenance become send out, for, the electricity consumption industry is paid close attention to and the focus of research.Visual plants such as the high-tension switch cabinet of generating plant, transformer station, busbar joint, indoor and outdoor disconnecting link switch, in the long-time running process, it is loosening because of expanding with heat and contract with cold surface oxidation burn into fastening bolt to occur, problems such as contact and bus row junction are aging, cause contact resistance to increase, and along with power system development, it is increasing to load, these cause very easily that all to possess the equipment temperature rise too high, as can not get timely solution the insulating element performance will be reduced, even cause puncturing, cause serious accident, thereby cause heavy economic losses.In recent years, in power plant and transformer station a lot of switch overheat accidents have taken place, caused fire and large area blackout, solving switch overheated is to stop the key that this type of accident takes place, and realizes that on-line temperature monitoring is the important means that guarantees high-tension apparatus safety.
The equipment heating method for monitoring that often uses mainly contains now: paste the thermometric wax disk(-sc) at joint; Hand is touched cabinet door perception in-cabinet temperature; Overheated by the unusual odor discovering device; Overheated etc. by unusual sound equipment discovering device.Pasting the thermometric wax disk(-sc) is outdoor joint thermometry commonly used, and being used in has very big limitation in the enclosures, and most of joint be can't see by the view window of cabinet door, can only check that when the switch interruption maintenance joint has or not overheat condition, and is little to the effect of preventing accident.It is no abnormal that the method that hand is touched the cabinet door can judge probably that temperature has, but this method has very big randomness and contingency, and because the difference of individual's sensation, and same case also has differently to be judged.When overheated joint, necessarily have unusual odor or abnormal sound, when particularly connecting the conductor joint heating of current transformer, can send strong unusual odor, the staff can make further judgement according to the source of smell.In a word, can probably judge by the above several method of integrated application to have or not the conductor joint heating fault in the switch cubicle, but science, not rigorous not, to unwatched transformer station, open and close the no practical value in station.
Thermometric modes such as conventional thermopair, thermal resistance, semiconductor temperature sensor need the plain conductor transmission signals, and insulating property can not guarantee to cause easily the generation of various accidents under hyperbaric environment.
Optical fiber type temperature temperature measurer adopts optical fiber to transmit signal, and its temperature sensor is installed in the surface of charged object, is connected with optical fiber between temperature measurer and temperature sensor.Optical fiber has easy to break, easily broken, non-refractory.Behind the accumulation dust insulativity is reduced, and the wiring difficulty is bigger in cabinet, the cost height.
The noncontact infrared temperature-test technology is the surface temperature of Measuring Object quickly and easily, does not need mechanically to contact testee and records temperature reading fast, can measure heat, object dangerous or that be difficult to contact reliably, and can not pollute or damage testee.Infrared measurement of temperature has advantages such as fast, noncontact of response time, safe in utilization and long service life, has brought into play important effect at aspects such as production quality control and monitoring, equipment on-line fault diagnosis, safeguard protection and energy savings.
The object that all temperature are higher than absolute zero (273 degrees centigrade) all ceaselessly towards periphery the space send infrared energy.The infrared signature of object (size of emittance) and very confidential relation is arranged by the distribution of wavelength and its surface temperature.Therefore, by measurement, just can measure its surface temperature exactly, the objective base of infrared radiation temperature institute foundation that Here it is to the infrared energy of object self radiation.Infrared between visible light and radiowave, infrared wavelength micron expression commonly used, wavelength coverage is 0.7 micron-1000 microns, in fact, 0.7 micron-14 microns wavestrip is used for infrared measurement of temperature.
Optical system converges the target infrared energy in its visual field, and the size of visual field is determined by the optical element and the position thereof of temperature measurer.Infrared energy focuses on the photodetector and changes corresponding electric signal into.This signal process amplifier and signal processing circuit, and according to the temperature value that changes measured target after its inner algorithm and the correction of target emissivity into.
The key factor that the accurate thermometric of several decisions is arranged, most important factor are emissivity, visual field, optical resolution (distance of hot spot and the position of hot spot).
Emissivity---belongings is known from experience reflection, is seen through and emitted energy, has only the temperature of the energy energy directing object of emission.The actual object that occurring in nature exists nearly all is not a black matrix.The radiant quantity of all actual objects is except that the temperature that depends on radiation wavelength and object, and is also relevant with the material category, surfaceness, physics and chemistry structure, material thickness, preparation method, thermal process and the factors such as surface state and environmental baseline that constitute object.Therefore, for making blackbody radiation law be applicable to all actual objects, must introduce the scale-up factor relevant, i.e. an emissivity with material character and surface state, this coefficient is represented the heat radiation of actual object and the degree of closeness of blackbody radiation, and it is worth between zero-sum is less than 1 numerical value.Black matrix is a kind of Utopian radiator, and its absorbs the emittance of all wavelengths, does not have the reflection of energy and sees through, and its surperficial emissivity is 1.According to radiation law,, just known the infrared signature of any object as long as known the emissivity of material.
Visual field---the spot size when guaranteeing measured target greater than apparatus measures, target is more little, just should be near more from it.When the precision particular importance, guarantee at least 2 times of targets to spot size, suggestion measured target size surpass the visual field size 50% for well.If target size is less than the visual field, the background radiation energy will enter temperature measurer, disturbs the thermometric reading, causes error.On the contrary, if target greater than the visual field of temperature measurer, temperature measurer just can not be subjected to the background influence of measured zone outside.
The optical system of optical resolution---infrared measurement of temperature is measured the hot spot harvest energy and is focused on the detector from circle, and optical resolution is defined as the ratio (D:S) of temperature measurer range-to-go and tested spot diameter S.Ratio is big more, and the resolution of thermometric is high more, and tested spot size is also just more little.The up-to-date improvement of infrared optics is the near burnt characteristic that has increased silicon lens, can provide accurate measurement to little target area, also can prevent the influence of ambient temperature.
Summary of the invention
The technical matters that the utility model solved provide a kind of can be to the online infrared temperature measurement apparatus of electrical equipment joint of electrical equipment joint thermometric.For this reason, the utility model is by the following technical solutions:
Described temperature measuring equipment comprises one or more wireless temperature measure modules, signal receiving module and back-stage management host module and/or display module, described wireless temperature measure module comprises interconnected infrared temperature probe, wireless communication module and control circuit, and described information receiving module links to each other by cordless communication network with wireless temperature measure module, back-stage management host module and/or display module.
By above technical scheme, when the utility model uses, can be by the infrared temperature probe in the wireless temperature measure module, the temperature of surveying high-tension apparatus also is transferred to information receiving module, realizes the on-line monitoring that the high-tension apparatus temperature is whether too high.The method that the utility model adopts the space to isolate sends system to by the infrared temperature probe detecting temperature and by wireless signal, has thorough, simple in structure, the characteristics such as antijamming capability strong, reliable operation of isolating.The utility model need not increase extra circuit under the power grid environment of complexity, both made things convenient for the I﹠M of system, has reduced the influence to electric power netting safe running again, and the security of system, dirigibility are greatly improved.
Description of drawings
Fig. 1 is the structural representation of the online infrared temperature measurement apparatus of electrical equipment joint in the utility model embodiment;
Embodiment
The utility model comprises one or more wireless temperature measure modules 1, signal receiving module 2 and back-stage management host module 3 and/or display module 4, described wireless temperature measure module comprises interconnected infrared temperature probe 11, wireless communication module and control circuit, and described information receiving module 2 and wireless temperature measure module 1, back-stage management host module 3 and/or display module 4 link to each other by cordless communication network.
Described information receiving module 2 and back-stage management host module 3 with link to each other by Ethernet or GPRS.
The utility model also comprises the GPRS short message alarm module.
Described wireless temperature measure module 1 is a data collection module, finish measuring point temperature acquisition and broadcast.Described infrared temperature probe 11 comprises optical system, photoelectric sensor, signal amplifier and signal Processing, and described control circuit is the MCU governor circuit.During installation, it is interior or outdoor that wireless temperature measure module 1 is installed to high-tension switch cabinet, keep certain distance with the measured point, described infrared temperature probe 11 points to joints such as busbar joint, indoor and outdoor disconnecting link switch, described wireless temperature measure module 1 at regular intervals, detect a contact temperature by infrared temperature probe 11, and information wireless is reported information receiving module 2 by cordless communication network.Described infrared temperature probe 11 is fixedly installed in the position apart from 0.5 ~ 1 meter of measured point.Can be provided with an infrared temperature probe 11 in the wireless temperature measure module 1, also can be provided with three infrared temperature probes 11, be applicable to different demands.Wireless communication module has the self-organized network communication ability, mainly finishes the data transmission with information receiving unit 2.Described wireless temperature measure module 1 is supported 12V direct current supply or powered battery.
Described signal receiving module 2 receives all kinds of wireless datas that come from a plurality of wireless temperature measure modules 1 and also transmits to backstage management host module 3 by network or GPRS passage.Owing to adopt the wireless communication technology networking, therefore a signal receiving module 2 can receive and manage a plurality of wireless temperature measure modules 1, and can realize plug and play, possesses very strong extendability.The user can increase or reduce easily, and increasing or reduce wireless temperature measure module 1 does not need to carry out any configuration, easy to use flexible.
The utility model also comprises display module 4.When not having back-stage management host module 3, display module 4 can independently use, and supports whole application.Specifically, display module 4 comprises display 41 and inner software for display, and this software for display comprises real-time data acquisition and demonstration, the inquiry of historical data, and history curve, the warning definite value of monitoring display unit self etc. is left, is set in warning.It mainly makes things convenient for field maintemance personnel's inquiry.Described display module 4 can be matched.
The utility model also comprises back-stage management host module 3.This host module 3 be located on the remote computer main control system, based on the application system of computing machine configuration technology and Web inquiry.A plurality of signal receiving modules 2 send to the remote computer main control system in the mode of Ethernet or GPRS with data.This remote computer main control system shows the real time data of each measuring point, historical data, warning message etc. in the mode of configuration.Described remote computer main control system is provided with Control Software, and this Control Software is analyzed the received temperature data from signal receiving module 2, find to surpass then instant alarming of the temperature of warning or probe failure.
The utility model can also comprise GPRS SMS alarm unit, when wireless temperature measure module 1 detects temperature anomaly information, sends warning message by GPRS SMS alarm unit to assigned number.
The utility model adopts advanced digitizing and Radio Transmission Technology, the insulating property of infrared temperature-test technology, uniqueness, economy easy to use.Be that installation, operation, maintenance all can high safeties, reliable.Can not produce any interference and influence to primary equipment.Standardized designs can conveniently be expanded and other system interconnection, and expense is cheap, and is flexible for installation.Collect data processing, demonstration, communication self-organizing system from temperature information, can be connected, also can be connected, incorporate the power automation complex control system with LAN (Local Area Network), the wide area network of electric system with the comprehensive automation of electric power system system.
The utility model designs according to the actual needs of China's electric system, be one in electric power safety operation, area of maintenance extensive application be worth and the novel high-tech product of market outlook.Product can apply in the power equipment on-line temperature monitoring system, provides reliable basis for power equipment becomes " repair based on condition of component " by " trouble hunting ".
The utility model has adopted advanced wireless communication technology, infrared measurement of temperature Detection Techniques, the low-power consumption of original creation, the design of contactless, active temperature probe and reliable wireless self-networking technology, in conjunction with powerline network, the GPRS communication technology, can form a powerful power equipment running status safe early warning platform, have vast market prospect.
Infrared measurement of temperature utilizes the direct induction heat radiation of thermoelectric pile infrared temperature-test sensor, and this sensor has the silicon-base micro-mechanical technology of innovation, has guaranteed fabulous long-time stability, low-down temperature sensitive coefficient, fabulous photoelectric characteristic.The thermoelectric pile infrared sensor makes the contact-free measurement of temperature system not need cooling, can reach in whole temperature measurement range ± 2 ℃ precision.For narrow temperature measurement range, measurement of bldy temperature for example, precision can reach ± and 0.2 ℃.
The utility model combines wireless communication technology with infrared real time temperature supervisory system, realized that the temperature of the high pressure of electric system and UHV (ultra-high voltage) bus, high-voltage switch gear contact (and personnel can't be approaching other danger, rugged surroundings) is carried out real-time online to be detected, through being connected with power automatic system, in the indoor temperature regime that just can the real time monitoring operational outfit of center monitoring, really accomplished remote remote measurement.When the measured point temperature surpassed warning value, system sent alerting signal automatically and in time reminds the relevant personnel to take measures by the GPRS note, guaranteed the power grid security reliability service.
High-tension switch cabinet operates in the state of high voltage, big electric current, and strong electromagnetic transient also appears in systematic failures moment, and these all produce highfield, magnetic field and strong electromagnetic, and it is very unfavorable that this handles for microelectronics system and feeble signal.For eliminating these interference, the utility model adopts various Anti-Jamming Techniques simultaneously: used the software filtering technology, passed through numerical coding, decoding technique, rejected undesired signal; On hardware, adopt metallic shield, strengthen filtering at different levels and eliminate high frequency interference.Do isolated from power simultaneously, reduce that high pressure is crosstalked and high voltage magnetic field influence.Adopt reliable MANET wireless communication technology, as the software protocol interference protection measure, based on the Error detection of CRC/proofreaied and correct, taked the tactful CSMA/CA that avoids conflict, the packet of transmission all to await the affirmation of reciever, as go wrong retransmit, MANET, automatically route can cover and manage scope significantly.
Wireless temperature measure module 1 of the present utility model is supported 12V direct supply and powered battery.Occasion for some difficult wirings is used powered battery.Powered battery is stable, helps eliminating the influence of highfield.The 12V direct supply is disturbed by outer high voltage magnetic field easily, but easy to maintenance, need not change battery.
When wireless temperature measure module 1 sends monitored some temperature, the numbering of himself (ID number) also to be transmitted, this ID whole world is unique can not repeat.When temperature data finally was transferred to back-stage management host module 3 together with ID number, main frame was determined the temperature of each monitoring point automatically according to the sensor number and the infield relation of preserving in advance in database.These characteristics are fit to the application that transformer station has a large amount of monitoring points very much, have improved the automaticity of system, the loaded down with trivial details hand-kept work when having alleviated artificial thermometric.
The utility model can be finished 24 hours real time on-line monitorings, wireless temperature measure module 1 (can be set) temperature data that the monitoring point is measured in initiatively taking turn at regular intervals in advance, the main frame real-time collecting also writes down the temperature data of all monitoring points, notes abnormalities to report to the police immediately.Solved the fault that temp measuring methods such as trying warm sheet, hand-held thermometric machine need manually be maked an inspection tour to the scene, scanning occasions a delay and cause.
The utlity model has following function: the excessive warning of rate of temperature change; Temperature exceeds peak value and reports to the police; The temperature trend early warning; There is a temperature inquiry in current institute; The inquiry of historical data; Accident pushes away screen, audible alarm, unattended SMS notification; Friendly interface uses simple, reliable; Rich interface can conveniently insert existing electric power software systems; Network enabled and long-range GPRS communication modes.
Claims (3)
1. online infrared temperature measurement apparatus of electrical equipment joint, it is characterized in that, described temperature measuring equipment comprises one or more wireless temperature measure modules, information receiving module and back-stage management host module and/or display module, described wireless temperature measure module comprises interconnected infrared temperature probe, wireless communication module and control circuit, and described information receiving module links to each other by cordless communication network with wireless temperature measure module, back-stage management host module and/or display module.
2. the online infrared temperature measurement apparatus of a kind of according to claim 1 electrical equipment joint is characterized in that, described information receiving module and back-stage management host module with link to each other by Ethernet or GPRS.
3. the online infrared temperature measurement apparatus of a kind of according to claim 1 electrical equipment joint is characterized in that described temperature measuring equipment also comprises the GPRS short message alarm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205672660U CN203083706U (en) | 2012-10-31 | 2012-10-31 | Online infrared temperature measuring device of electrical device joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205672660U CN203083706U (en) | 2012-10-31 | 2012-10-31 | Online infrared temperature measuring device of electrical device joint |
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| CN203083706U true CN203083706U (en) | 2013-07-24 |
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| CN2012205672660U Expired - Fee Related CN203083706U (en) | 2012-10-31 | 2012-10-31 | Online infrared temperature measuring device of electrical device joint |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426285A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Wireless temperature measuring device |
| CN103426064A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Background auxiliary analysis system for wireless temperature measurement of transformer substation power supply line |
| CN106052881A (en) * | 2016-07-29 | 2016-10-26 | 国网山东省电力公司济南供电公司 | Electrical equipment joint temperature measuring device |
| CN107860476A (en) * | 2017-11-28 | 2018-03-30 | 杭州朝阳橡胶有限公司 | A kind of novel electric appliance device temp measuring system and method |
| CN110160652A (en) * | 2018-04-17 | 2019-08-23 | 云南电网有限责任公司昭通供电局 | A kind of thermal imaging system data transmission method |
-
2012
- 2012-10-31 CN CN2012205672660U patent/CN203083706U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426285A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Wireless temperature measuring device |
| CN103426064A (en) * | 2013-08-21 | 2013-12-04 | 国家电网公司 | Background auxiliary analysis system for wireless temperature measurement of transformer substation power supply line |
| CN106052881A (en) * | 2016-07-29 | 2016-10-26 | 国网山东省电力公司济南供电公司 | Electrical equipment joint temperature measuring device |
| CN107860476A (en) * | 2017-11-28 | 2018-03-30 | 杭州朝阳橡胶有限公司 | A kind of novel electric appliance device temp measuring system and method |
| CN110160652A (en) * | 2018-04-17 | 2019-08-23 | 云南电网有限责任公司昭通供电局 | A kind of thermal imaging system data transmission method |
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| Date | Code | Title | Description |
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| 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: 20130724 Termination date: 20131031 |