CN204255529U - Thermometer floor inspection device - Google Patents
Thermometer floor inspection device Download PDFInfo
- Publication number
- CN204255529U CN204255529U CN201420580591.XU CN201420580591U CN204255529U CN 204255529 U CN204255529 U CN 204255529U CN 201420580591 U CN201420580591 U CN 201420580591U CN 204255529 U CN204255529 U CN 204255529U
- Authority
- CN
- China
- Prior art keywords
- thermometer
- thermal resistance
- inspection device
- resistance
- test pencil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims description 21
- 239000004020 conductor Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000011835 investigation Methods 0.000 abstract description 5
- 238000003032 molecular docking Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model provides a kind of thermometer floor inspection device, comprises interface circuit, is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe; Measure bridge road, obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit; Treatment circuit, obtains the temperature value located measured by described thermometer according to described thermal resistance signal.Therefore, thermometer floor inspection device described in the utility model, thermometer the docking of calibration equipment and thermometer is on the spot achieved by interface circuit, can be on-the-spot to thermometer, such as main-transformer dish-type thermometer is tested, if it is that fault has appearred in main-transformer dish-type thermometer that field test has, then can save the step of the equipment such as signal-transmitting cable being carried out to investigation completely, the main-transformer dish-type thermometer directly more renewed, improve overhaul efficiency, be conducive to the safe and stable operation of main-transformer.
Description
Technical field
The utility model relates to detecting instrument, equipment technical field, relates in particular to a kind of thermometer floor inspection device.
Background technology
Comprehensive automation of substation is the basis realizing unattended operation transformer station, is also the needs of grid equipment safe and reliable operation.By gather the instruction of main-transformer dish-type thermometer temperature signal and by it by the pulpit of cable transmission to far-end, scheduling, operator can be made to recognize the temperature information of main-transformer in time, and then accurate judgement is made to the ruuning situation of main-transformer, to ensure the operation that grid equipment is safe and reliable.
In recent years; along with the lasting propelling of integrated automation of transformation stations retrofit work; the pulpit of the temperature that main-transformer dish-type thermometer scene shows and far-end receives and the situation that the temperature signal shown is not inconsistent happens occasionally; scheduling, operator are had a strong impact on to the accurate judgement of the operation conditions of main-transformer; and deviation directly will affect the execution of non-ionizing energy loss correct operation when exceeding standard; cause the unplanned power failure of main-transformer, affect the safe and stable operation of main-transformer.Present stage, when there is above-mentioned fault, owing to not carrying out the device of field test to main-transformer dish-type thermometer, usually to carry out all fronts investigation to equipment such as signal-transmitting cables and carry out defect diagonsis, just can find out trouble spot and carry out defect elimination, relate to once with the teams and groups combination process of secondary specialty, cause maintenance power and responsibility ownership clear not, defect elimination flow process is numerous and diverse, is unfavorable for the timely solution of problem, service work inefficiency, manpower and materials serious waste phenomenon.
Utility model content
For this reason, technical problem to be solved in the utility model be in prior art when the temperature and the pulpit of far-end that occur the display of main-transformer dish-type thermometer scene receive and the fault that the temperature signal shown is not inconsistent time, usually to carry out all fronts investigation to equipment such as signal-transmitting cables and carry out defect diagonsis, just can find out trouble spot and carry out defect elimination, service work inefficiency, thus a kind of main-transformer dish-type thermometer floor inspection device that can improve overhaul efficiency is provided.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The utility model provides a kind of thermometer floor inspection device, comprising:
Interface circuit, is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe;
Measure bridge road, obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit;
Treatment circuit, obtains the temperature value located measured by described thermometer according to described thermal resistance signal.
Thermometer floor inspection device described in the utility model, the thermal resistance connection terminal quantity of described thermometer to be tested is 3, and one end of one of them thermal resistance connection terminal and described thermal resistance couples, the other end of another two thermal resistance connection terminals and described thermal resistance couples.
Thermometer floor inspection device described in the utility model, described interface circuit comprises three test pencil probes P1, P2 and P3, correspondingly with three thermal resistance connection terminals of described thermometer respectively to couple, the plug end of wherein said test pencil probe P1 is coupled by one end of the thermal resistance connection terminal corresponding with it and described thermal resistance, the plug end of described test pencil probe P2 and the plug end of described test pencil probe P3 couple respectively by the other end of the thermal resistance connection terminal corresponding with it and described thermal resistance, and described test pencil is popped one's head in the conductor wire end ground connection of P3.
Thermometer floor inspection device described in the utility model, described measurement bridge road comprises resistance R1, R2 and adjustable resistance VR, the pop one's head in conductor wire end of P1 of one end of described resistance R1 and described test pencil couples, the pop one's head in conductor wire end of P2 of a stiff end of described adjustable resistance VR and described test pencil couples, power supply VCC is accessed after the other end of described resistance R1 and one end of described resistance R2 connect, the other end of described resistance R2, as first output terminal on described measurement bridge road after another stiff end of described adjustable resistance VR and the sliding end of described adjustable resistance VR connect, one end that the conductor wire end that P1 popped one's head in by described resistance R1 and described test pencil couples is as second output terminal on described measurement bridge road, described first output terminal and described second output terminal are for exporting described thermal resistance signal.
Thermometer floor inspection device described in the utility model, also comprises heat insulating protecting apparatus, and for encapsulating described interface circuit, described measurement bridge road and described treatment circuit, the test pencil probe in described interface circuit stretches out from described heat insulating protecting apparatus.
Thermometer floor inspection device described in the utility model, described heat insulating protecting apparatus comprises thermofin, refractory coating and wearing layer, and described refractory coating is coated on the inside surface of described thermofin, is wrapped in the outside surface of described thermofin outside described wearing layer.
Thermometer floor inspection device described in the utility model, described thermofin inside surface is evenly provided with circular protrusions.
Thermometer floor inspection device described in the utility model, also comprises signal amplification circuit, and the described thermal resistance signal for exporting described measurement bridge road carries out signal and amplifies process, and the signal after amplifying is input to described treatment circuit.
Technique scheme of the present utility model has the following advantages compared to existing technology:
The utility model provides a kind of thermometer floor inspection device, comprises interface circuit, is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe; Measure bridge road, obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit; Treatment circuit, obtains the temperature value located measured by described thermometer according to described thermal resistance signal.Therefore, thermometer floor inspection device described in the utility model, docking of thermometer floor inspection device and thermometer is achieved by interface circuit, can be on-the-spot to thermometer, such as main-transformer dish-type thermometer is tested, if it is that fault has appearred in main-transformer dish-type thermometer that field test has, then can save the step of the equipment such as signal-transmitting cable being carried out to investigation completely, the main-transformer dish-type thermometer directly more renewed, improve overhaul efficiency, be conducive to the safe and stable operation of main-transformer.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structured flowchart of thermometer floor inspection device described in embodiment 1;
Fig. 2 is the circuit catenation principle figure on interface circuit and measurement bridge road in thermometer floor inspection device described in embodiment 1;
Fig. 3 is the structured flowchart of thermometer floor inspection device described in embodiment 2;
Fig. 4 is the structured flowchart of thermometer floor inspection device described in embodiment 3;
Fig. 5 is the sectional view of the heat insulating protecting apparatus of thermometer floor inspection device.
In figure, Reference numeral is expressed as: 1-interface circuit, and 2-measures bridge road, 3-treatment circuit, 4-signal amplification circuit, 5-A/D change-over circuit, 6-digital display circuit, 31-thermofin, 32-refractory coating, 33-wearing layer, 311-circular protrusions.
Embodiment
Embodiment 1
Present embodiments provide a kind of thermometer floor inspection device, as shown in Figure 1, comprising:
Interface circuit 1, is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe.
Measure bridge road 2, obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit 1.
Treatment circuit 3, obtains the temperature value located measured by described thermometer according to described thermal resistance signal.
Particularly, described thermal resistance can select Pt100 thermal resistance, Pt100 thermal resistance carries out thermometric based on the thermal effect of resistance, namely the resistance of the resistive element of Pt100 thermal resistance has variation with temperature and the characteristic changed, measure bridge road 2 and just can obtain described thermal resistance signal by described interface circuit 1, because thermal resistance with need the measured place of measuring tempeature to contact or adjoining, therefore the thermal resistance signal of described thermal resistance can reflect the temperature variation of measured place, treatment circuit 3 just can obtain the temperature value located measured by described thermometer according to described thermal resistance signal.There is the treatment circuit that the multiple thermal resistance signal according to thermal resistance obtains temperature value in prior art, all can be applied in the present embodiment.
Particularly, the thermal resistance connection terminal quantity of described thermometer to be tested is 3, and one end of one of them thermal resistance connection terminal and described thermal resistance couples, and the other end of another two thermal resistance connection terminals and described thermal resistance couples.
Preferably, as shown in Figure 2, described interface circuit 1 comprises three test pencil probes P1, P2 and P3, correspondingly with three thermal resistance connection terminals of described thermometer respectively to couple, the plug end of wherein said test pencil probe P1 is coupled by one end of the thermal resistance connection terminal corresponding with it and described thermal resistance, the plug end of described test pencil probe P2 and the plug end of described test pencil probe P3 couple respectively by the other end of the thermal resistance connection terminal corresponding with it and described thermal resistance, and described test pencil is popped one's head in the conductor wire end ground connection of P3.Described measurement bridge road 2 comprises resistance R1, R2 and adjustable resistance VR, the pop one's head in conductor wire end of P1 of one end of described resistance R1 and described test pencil couples, the pop one's head in conductor wire end of P2 of a stiff end of described adjustable resistance VR and described test pencil couples, power supply VCC is accessed after the other end of described resistance R1 and one end of described resistance R2 connect, the other end of described resistance R2, as first output terminal on described measurement bridge road 2 after another stiff end of described adjustable resistance VR and the sliding end of described adjustable resistance VR connect, one end that the conductor wire end that P1 popped one's head in by described resistance R1 and described test pencil couples is as second output terminal on described measurement bridge road 2, described first output terminal and described second output terminal are for exporting described thermal resistance signal.
Particularly, because described thermometer self is with three thermal resistance connection terminals, one end of one of them thermal resistance connection terminal and thermal resistance couples, the other end of another two thermal resistance connection terminals and thermal resistance couples, during field test, three test pencil probe P1 of described interface circuit, P2 and P3 inserts in corresponding described thermal resistance connection terminal respectively, now, described measurement bridge road 2, described interface circuit 1, two current paths are formed between described thermal resistance connection terminal and described thermal resistance, wherein one is that electric current is through resistance R1, test pencil probe P1, first thermal resistance connection terminal, thermal resistance, second thermal resistance connection terminal and test pencil probe P3 after ground connection, another article is electric current ground connection after the effective resistance part, test pencil probe P2, the 3rd thermal resistance connection terminal, second thermal resistance connection terminal and test pencil probe P3 of resistance R2, adjustable resistance VR.Therefore, when measured place is temperature-resistant, thermal resistance resistance is constant, voltage between the first output terminal of described interface circuit 1 and the second output terminal is constant, when measured place temperature variation, described thermal resistance resistance also can variation with temperature and changing, also can there is corresponding change in the voltage now between described first output terminal to described second output terminal, described measurement bridge road 2 will gather temperature variant thermal resistance signal by described interface circuit 1 and described thermal resistance connection terminal from the thermal resistance in described thermometer.By measuring the connection on bridge road, can also overcome the measuring error that conductor resistance causes, the thermal resistance signal of collection is more accurate.
According to the thermometer floor inspection device of the present embodiment, docking of thermometer floor inspection device and thermometer is achieved by interface circuit, can be on-the-spot to thermometer, such as main-transformer dish-type thermometer is tested, if it is that fault has appearred in main-transformer dish-type thermometer that field test has, then can save the step of the equipment such as signal-transmitting cable being carried out to investigation completely, the main-transformer dish-type thermometer directly more renewed, improve overhaul efficiency, be conducive to the safe and stable operation of main-transformer.
Embodiment 2
On the basis of embodiment 1, as shown in Figure 3, thermometer floor inspection device according to the present embodiment can also comprise signal amplification circuit 4, and the described thermal resistance signal for exporting described measurement bridge road 2 carries out signal and amplifies process, and the signal after amplifying is input to described treatment circuit 3.
Particularly, by described signal amplification circuit 4, amplification process is carried out to described thermal resistance signal, described treatment circuit 3 can be made to get the thermal resistance signal after amplifying clearly.
Embodiment 3
The present embodiment additionally provides another kind of thermometer floor inspection device, as shown in Figure 4, comprising:
Interface circuit 1, is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe.
Measure bridge road 2, obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit.
A/D change-over circuit 5, exports after converting described thermal resistance signal to digital signal.
Digital display circuit 6, the described digital signal according to receiving carries out Temperature displaying.
Particularly, the structure on described interface circuit 1 and described measurement bridge road 2 can referring to interface circuit in embodiment 11 and the corresponding description of measuring bridge road 2.。
Thermometer floor inspection device in the present embodiment, reviewer just can get the temperature of measured place intuitively by described digital display circuit 6.
As shown in Figure 5; thermometer floor inspection device as described above can also comprise heat insulating protecting apparatus; for encapsulating described interface circuit 1, described measurement bridge road 2 and described treatment circuit 3, the test pencil probe in described interface circuit 1 stretches out from described heat insulating protecting apparatus.
Preferably, described heat insulating protecting apparatus comprises thermofin 31, refractory coating 32 and wearing layer 33, and described refractory coating 32 is coated on the inside surface of described thermofin 31, is wrapped in the outside surface of described thermofin 31 outside described wearing layer 33.
Preferably, described thermofin 31 inside surface is evenly provided with circular protrusions 311.
Thermometer floor inspection device in the present embodiment; described interface circuit 1, described measurement bridge road 2 and described treatment circuit 3 is encapsulated by described heat insulating protecting apparatus; the effect of thermal insulation protection can be played to foregoing circuit; by described wearing layer 33; thermometer floor inspection device can be prevented to be scratched; external environment condition can be completely cut off on the impact of measuring by described thermofin 31 and refractory coating 32; ensure that temperature that described thermometer floor inspection device gathers can the temperature at true reflected measurement place, avoid measuring error.Described circular protrusions 311 can also play shockproof effect, even if described thermometer floor inspection device falls because of carelessness, also infringement can be down to minimum.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (8)
1. a thermometer floor inspection device, is characterized in that, comprising:
Interface circuit (1), is coupled with the connection terminal of the thermal resistance of thermometer to be tested by test pencil probe;
Measure bridge road (2), obtained the thermal resistance signal of the thermal resistance of described thermometer by described interface circuit (1);
Treatment circuit (3), obtains the temperature value located measured by described thermometer according to described thermal resistance signal.
2. thermometer floor inspection device according to claim 1, it is characterized in that, the thermal resistance connection terminal quantity of described thermometer to be tested is 3, and one end of one of them thermal resistance connection terminal and described thermal resistance couples, the other end of another two thermal resistance connection terminals and described thermal resistance couples.
3. thermometer floor inspection device according to claim 2, is characterized in that:
Described interface circuit (1) comprises three test pencil probes P1, P2 and P3, correspondingly with three thermal resistance connection terminals of described thermometer respectively to couple, the plug end of wherein said test pencil probe P1 is coupled by one end of the thermal resistance connection terminal corresponding with it and described thermal resistance, the plug end of described test pencil probe P2 and the plug end of described test pencil probe P3 couple respectively by the other end of the thermal resistance connection terminal corresponding with it and described thermal resistance, and described test pencil is popped one's head in the conductor wire end ground connection of P3.
4. thermometer floor inspection device according to claim 3, is characterized in that:
Described measurement bridge road (2) comprises resistance R1, R2 and adjustable resistance VR, the pop one's head in conductor wire end of P1 of one end of described resistance R1 and described test pencil couples, the pop one's head in conductor wire end of P2 of a stiff end of described adjustable resistance VR and described test pencil couples, power supply VCC is accessed after the other end of described resistance R1 and one end of described resistance R2 connect, the other end of described resistance R2, as the first output terminal of described measurement bridge road (2) after another stiff end of described adjustable resistance VR and the sliding end of described adjustable resistance VR connect, one end that the conductor wire end that P1 popped one's head in by described resistance R1 and described test pencil couples is as the second output terminal of described measurement bridge road (2), described first output terminal and described second output terminal are for exporting described thermal resistance signal.
5. thermometer floor inspection device according to claim 1; it is characterized in that; also comprise heat insulating protecting apparatus; for encapsulating described interface circuit (1), described measurement bridge road (2) and described treatment circuit (3), the test pencil probe in described interface circuit (1) stretches out from described heat insulating protecting apparatus.
6. thermometer floor inspection device according to claim 5; it is characterized in that; described heat insulating protecting apparatus comprises thermofin (31), refractory coating (32) and wearing layer (33); and described refractory coating (32) is coated on the inside surface of described thermofin (31), outside described wearing layer (33), be wrapped in the outside surface of described thermofin (31).
7. thermometer floor inspection device according to claim 6, is characterized in that, described thermofin (31) inside surface is evenly provided with circular protrusions (311).
8. the thermometer floor inspection device according to any one of claim 1-7, it is characterized in that, also comprise signal amplification circuit (4), described thermal resistance signal for exporting described measurement bridge road (2) carries out signal and amplifies process, and the signal after amplifying is input to described treatment circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420580591.XU CN204255529U (en) | 2014-10-09 | 2014-10-09 | Thermometer floor inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420580591.XU CN204255529U (en) | 2014-10-09 | 2014-10-09 | Thermometer floor inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255529U true CN204255529U (en) | 2015-04-08 |
Family
ID=52959826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420580591.XU Expired - Fee Related CN204255529U (en) | 2014-10-09 | 2014-10-09 | Thermometer floor inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204255529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467254A (en) * | 2016-01-20 | 2016-04-06 | 淄博职业学院 | Electric appliance detection method utilizing temperature gatherer |
| US11156644B2 (en) | 2019-01-03 | 2021-10-26 | International Business Machines Corporation | In situ probing of a discrete time analog circuit |
-
2014
- 2014-10-09 CN CN201420580591.XU patent/CN204255529U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467254A (en) * | 2016-01-20 | 2016-04-06 | 淄博职业学院 | Electric appliance detection method utilizing temperature gatherer |
| US11156644B2 (en) | 2019-01-03 | 2021-10-26 | International Business Machines Corporation | In situ probing of a discrete time analog circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109855759B (en) | High-temperature superconducting cable temperature measuring system | |
| CN203298870U (en) | GIS device contact temperature on-line monitoring system based on infrared temperature sensor | |
| CN106855443A (en) | Cable intermediate joint conductor temperature measurement structure | |
| CN205175574U (en) | Cable intermediate head conductor temperature measures structure | |
| CN206339317U (en) | A kind of Transformer Winding temperature on-line monitoring device | |
| CN204255529U (en) | Thermometer floor inspection device | |
| CN203465028U (en) | Multi-channel temperature monitor based on NTC temperature sensor | |
| CN105371976A (en) | Thermal resistance temperature measuring device and temperature measuring method | |
| CN102346081A (en) | Device for measuring temperature and humidity of grain in grain depot | |
| CN202814562U (en) | Wireless temperature measurement system for distribution network equipment | |
| CN202562629U (en) | High voltage power transmission line strain drainage wire clamp temperature testing system | |
| CN1869619A (en) | High voltage environment fibre-optical raster temp. sensor | |
| Pugach et al. | XLPE-insulated cables temperature monitoring for the determination of their residual life | |
| CN101329203A (en) | Apparatus for measuring temperature of alternating current-direct current lightning arrestor | |
| CN206361806U (en) | A kind of multi-point temperature measurement control device | |
| CN203881458U (en) | Connector structure integrated with thermocouple cold end temperature measuring sensor | |
| Wenzhi et al. | The design of temperature monitoring system for power cable joint | |
| CN202600050U (en) | Tester for high tension transmission line | |
| CN207894532U (en) | Flexible distributed fever strip | |
| CN210835070U (en) | Bus duct impedance measuring device | |
| CN114167218A (en) | Dry-type reactor fault early warning system based on distributed detection | |
| Yong-Qiang et al. | Research of temperature sensor arrangement based on transformer hot-spot temperature estimates | |
| CN203191085U (en) | High voltage equipment temperature monitoring system used for electric power inspection | |
| CN202403831U (en) | Snapping-ring type sensor using optical fiber bragg grating to monitor temperatures of medium-voltage power cable intermediate joint | |
| CN202601871U (en) | All-insulation electric cable accessory capable of measuring temperature indirectly |
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: 20150408 Termination date: 20181009 |