CN203455110U - Thermometer electric contact detection apparatus - Google Patents
Thermometer electric contact detection apparatus Download PDFInfo
- Publication number
- CN203455110U CN203455110U CN201320582006.5U CN201320582006U CN203455110U CN 203455110 U CN203455110 U CN 203455110U CN 201320582006 U CN201320582006 U CN 201320582006U CN 203455110 U CN203455110 U CN 203455110U
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- thermometer
- electric contact
- temperature
- temperature control
- control modules
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Abstract
The utility model provides a thermometer electric contact detection apparatus, meeting the Q/GDW 440-2010 requirements of a substation main transformer temperature controller and characterized by comprising a computer, a temperature control module, a cooling device, a heating device and a constant temperature bath. The computer is in signal transmission connection with the temperature control module; the temperature module is in electric connection with the heating device and the cooling device used for heating or cooling the constant temperature bath; the temperature control module is in electric connection with a standard thermometer placed in the constant temperature bath; the constant temperature bath accommodates a heat transfer medium. The thermometer electric contact detection apparatus can slowly and uniformly change the temperatures of the constant temperature bath and the temperature change speed meets the detection requirements; the temperatures in the constant temperature bath are uniform, avoiding errors between the standard thermometer and an electric contact thermometer to be detected.
Description
Technical field
The utility model relates to thermometer detection technique field, especially a kind of thermometer electric contact pick-up unit.
Background technology
At present, at thermometer detection field, particularly pressure-type thermometer detection field, detects control and the analysis of rear temperature value conventionally to dut temperature with industrial control computer.How better to utilize industrial control computer to control temperature detection instrument, make it more realistic action need, become the topic that temperature detection field people pay close attention to.
Electric substation's main variable temperature controller is used for monitoring main transformer temperature; the more important thing is and utilize its electric contact to control cooling circuit and when temperature sharply rises; can send alarm signal at specified temp; and when temperature reaches capacity temperature, can utilize the comprehensive trip(ping) circuit of electric contact action launching, thereby reach the object of protection transformer equipment safety.
Since power transformer Condition Based Maintenance Putting in Practice and outage management outside the plan, in most cases always need to wait for that power failure chance could implement maintenance to fault temperature controller, in this very long waiting process temperature controller in spite of illness (or termination) work to substation safety there is hidden danger in operation.Therefore, carry out major tasks of Q/GDW 440-2010 oil-filled transformer temperature measuring equipment field calibration standard (hereinafter to be referred as 440 standards): be exactly, at substation field, the overtemperature alarm of transformer dial thermometer and overtemperature tripping operation contact are carried out to the test of contact action definite value.440 standard codes: " tested electric contact thermometer thermometer bulb and standard thermometer should be inserted in calibration cell, slowly evenly change calibration cell temperature (temperature changing speed should be not more than 1 ℃/min), make it to produce the switching action of closed and disconnected." still, also there is no to meet the pick-up unit requiring so at present.
Summary of the invention
The purpose of this utility model is to provide a kind of economical and practical, easy to operate, controlled strong thermometer electric contact pick-up unit of temperature variation in order to solve above-mentioned the deficiencies in the prior art.
In order to achieve the above object, the thermometer electric contact pick-up unit that the utility model is designed, it is characterized in that comprising computing machine, temperature control modules, cooling device, heating arrangement and calibration cell, described computing machine is connected with the mutual signal transmission of temperature control modules, described temperature control modules is electrically connected to for heating or described heating arrangement and the cooling device of coolant thermostat, described temperature control modules is electrically connected to a standard thermometer being placed in described calibration cell, in described calibration cell, accommodates heat transfer medium.
By computer drives temperature control modules, temperature control modules is controlled the temperature variation in calibration cell by controlling the operation of heating arrangement and cooling device, reaches and slowly evenly changes calibration cell temperature, and temperature changing speed meets the object of testing requirement.Tested electric contact thermometer thermometer bulb and standard thermometer are all placed in calibration cell, by the variation of temperature in calibration cell, whether observe tested electric contact thermometer thermometer bulb matches with the temperature variation of standard thermometer, thereby judge that whether tested electric contact thermometer thermometer bulb is qualified, also can carry out automatic decision by the temperature information of tested electric contact thermometer thermometer bulb and standard thermometer is fed back to computing machine.
As the further of said structure, improve and supplement, the utility model also comprises the combination in any of following additional technical feature or these features:
Described temperature control modules comprises industry control module and temperature controller, described industry control module is provided with the access point of dut temperature meter, tested electric contact thermometer can be connected with industry control module by connector, whether computing machine reads the information of tested electric contact thermometer by industry control module, qualified by computing machine automatic discrimination.
Described cooling device is fan and has many, and temperature is controlled more accurate.
Described heating arrangement is well heater, and described temperature controller is by the switching of a solid-state relay control heater, and control structure is simple, reliable.
In described calibration cell, be provided with stirring apparatus, make heat transfer medium temperature equalization in calibration cell.
A kind of thermometer electric contact pick-up unit that the utility model obtains, by computer drives temperature control modules, temperature control modules is controlled the temperature variation in calibration cell by controlling the operation of heating arrangement and cooling device, reach and slowly evenly change calibration cell temperature, temperature changing speed meets the object of testing requirement; In calibration cell, temperature is even, avoids the error between standard thermometer and tested electric contact thermometer thermometer bulb.
Accompanying drawing explanation
Fig. 1 is block diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
In figure: 1-computing machine, 2-industry control module, 3-temperature controller, 4-fan, 5-well heater, 6-connector, 7-solid-state relay, 8-stirring apparatus.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
As shown in Figure 1-2, a kind of thermometer electric contact pick-up unit that the present embodiment is described, comprise computing machine 1, temperature control modules, cooling device, heating arrangement and calibration cell, described computing machine 1 is connected with the mutual signal transmission of temperature control modules, described temperature control modules is electrically connected to for heating or described heating arrangement and the cooling device of coolant thermostat, described temperature control modules is electrically connected to a standard thermometer being placed in described calibration cell, in described calibration cell, accommodates heat transfer medium.Described temperature control modules comprises industry control module 2 and temperature controller 3, and described industry control module 2 is provided with the access point of tested electric contact thermometer, and tested electric contact thermometer is connected with industry control module 2 by connector 6.Described cooling device is fan 4 and has three.Described heating arrangement is well heater 5, and described temperature controller 3 is by the switching of solid-state relay 7 control heaters.In described calibration cell, be provided with stirring apparatus 8, make in calibration cell temperature consistent, avoid being placed in standard thermometer in calibration cell and the error between tested electric contact thermometer thermometer bulb simultaneously.
Claims (5)
1. a thermometer electric contact pick-up unit, it is characterized in that comprising computing machine (1), temperature control modules, cooling device, heating arrangement and calibration cell, described computing machine (1) is connected with the mutual signal transmission of temperature control modules, described temperature control modules is electrically connected to for heating or described heating arrangement and the cooling device of coolant thermostat, described temperature control modules is electrically connected to a standard thermometer being placed in described calibration cell, in described calibration cell, accommodates heat transfer medium.
2. thermometer electric contact pick-up unit according to claim 1, is characterized in that described temperature control modules comprises industry control module (2) and temperature controller (3), and described industry control module (2) is provided with the access point of dut temperature meter.
3. thermometer electric contact pick-up unit according to claim 1, is characterized in that described cooling device is fan (4) and has many.
4. thermometer electric contact pick-up unit according to claim 2, is characterized in that described heating arrangement is well heater (5), and described temperature controller (3) is by the switching of a solid-state relay (7) control heater.
5. thermometer electric contact pick-up unit according to claim 1, is characterized in that being provided with stirring apparatus (8) in described calibration cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582006.5U CN203455110U (en) | 2013-09-18 | 2013-09-18 | Thermometer electric contact detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582006.5U CN203455110U (en) | 2013-09-18 | 2013-09-18 | Thermometer electric contact detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455110U true CN203455110U (en) | 2014-02-26 |
Family
ID=50134976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582006.5U Expired - Lifetime CN203455110U (en) | 2013-09-18 | 2013-09-18 | Thermometer electric contact detection apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203455110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487446A (en) * | 2019-09-05 | 2019-11-22 | 湖南省计量检测研究院 | A kind of modification method of electric conduction thermometer deviation |
| CN111459145A (en) * | 2020-05-13 | 2020-07-28 | 中铁电气化局集团有限公司 | Transformer temperature controller calibration device and calibration method |
-
2013
- 2013-09-18 CN CN201320582006.5U patent/CN203455110U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487446A (en) * | 2019-09-05 | 2019-11-22 | 湖南省计量检测研究院 | A kind of modification method of electric conduction thermometer deviation |
| CN111459145A (en) * | 2020-05-13 | 2020-07-28 | 中铁电气化局集团有限公司 | Transformer temperature controller calibration device and calibration method |
| CN111459145B (en) * | 2020-05-13 | 2022-11-29 | 中铁电气化局集团有限公司 | Transformer temperature controller calibration device and calibration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |