CN202383519U - Rapid detection device of digital display temperature controller for transformer - Google Patents
Rapid detection device of digital display temperature controller for transformer Download PDFInfo
- Publication number
- CN202383519U CN202383519U CN2012200340423U CN201220034042U CN202383519U CN 202383519 U CN202383519 U CN 202383519U CN 2012200340423 U CN2012200340423 U CN 2012200340423U CN 201220034042 U CN201220034042 U CN 201220034042U CN 202383519 U CN202383519 U CN 202383519U
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- double
- throw switch
- precision
- transformer
- parallel
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Abstract
The utility model relates to a rapid detection device of a digital display temperature controller for a transformer, belonging to the technical field of detection of digital display temperature controllers. The technical scheme of the utility model is as follows: the rapid detection device mainly comprises a power switch, a fuse, a high-precision digital ohmmeter, a high-precision adjustable resistor, a double-throw switch, a 100-ohm resistor, a connecting terminal and a wiring terminal, wherein a 220V AC power supply provides a working power supply for the high-precision digital ohmmeter through the power supply switch and the fuse, and two ends of the 100-ohm resistor are independently connected with the connecting terminal; and the output end of the high-precision adjustable resistor is connected with a public contact of the double-throw switch in parallel, the input end of the high-precision digital ohmmeter is connected with a contact at one side of the double-throw switch in parallel, and a contact at the other side of the double-throw switch is connected with the wiring terminal in parallel. The rapid detection device disclosed by the utility model has the beneficial effects of being simple to manufacture, convenient to use and carry, realizing rapid and effective detection on a working site and greatly improving the working efficiency.
Description
One, technical field:
The utility model relates to digital display temperature controller inspection technology field, particularly is that a kind of structural principle is simple, transformer digital display temperature controller quick test device convenient to use.
Two, background technology:
As everyone knows; Transformer is the visual plant in the electric system, and the temperature that shows as the most basic when break down in transformer inside raises, in order to protect transformer; Ensure electric power system safety, reliability service; The main transformer of general transformer station all is provided with over-temperature protection, is used for monitoring the upper strata oil temperature of oil tank of transformer, and whether supervision transformer running status is normal.DL/T572-1995 " power transformer operating standard " has stipulated the upper strata oil temperature of transformer, generally must not be above 95 ℃.If upper strata oil temperature surpasses 95 ℃, the temperature of Transformer Winding will surpass the high-temperature capability of winding insulation thing, thereby quicken the aging of insulant.Transformer is in service, considers the temperature difference of oil tank of transformer internal and external environment, general provision the boundaries of 85 ℃ of these upper stratas oil temperature.The temperature-measurement principle of each substation transformer mainly is to adopt the compound sensor technology at present; Pt100 thermal resistance sensor by being installed on the oil tank of transformer passes through the secondary cable teletransmission to the pulpit with temperature signal; Show synchronously and control transformer oil temperature through the digital display temperature controller; When overtemperature, the closed transformer secondary of connecting of temperature controller interior contacts is reported to the police or trip(ping) circuit.But in long-time actual moving process; It is excessive digital display temperature controller temperature displayed value deviation to occur through regular meeting; Move problem such as undesired, cause over-temperature protection can't effectively guarantee the normal operation of transformer, the reason that this type of problem occurs mainly contains two aspects; The one, digital display temperature controller self internal fault causes, needs to change temperature controller or depot repair this moment; The 2nd, Pt100 thermal resistance sensor or secondary cable fault cause; And present prior art, the maintainer can't judge fast that at the scene check number shows the quality of temperature controller self, and a new digital display temperature controller is often expensive, frequent time-consuming expense material when therefore handling this type of fault.
Three, summary of the invention:
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, provides a kind of structural principle simple, and on-the-spot easy to carry, cost is low, the digital display of transformer efficiently temperature controller quick test device safe in utilization.
Its technical scheme is: mainly be made up of power switch, insurance, high-precision digital ohmmeter, high precision adjustable resistor, double-throw switch, 100 Europe resistance, splicing ear, connection terminal; The 220V AC power provides working power through power switch, insurance for the high-precision digital ohmmeter, and the two ends of 100 Europe resistance are connected separately with splicing ear; The output terminal of high precision adjustable resistor and the common junction of double-throw switch are connected in parallel, and the input end of high-precision digital ohmmeter and double-throw switch one side joint point are connected in parallel, and the opposite side contact and the connection terminal of double-throw switch are connected in parallel.Through two diverse locations of double-throw switch can realize the high precision adjustable resistor respectively with being connected in parallel separately of high-precision digital ohmmeter and connection terminal.
The beneficial effect of the utility model is: transformer digital display temperature controller verifying attachment is made simple, uses easy to carryly, has realized effectively checking fast of working site, has improved work efficiency greatly.
Four, description of drawings:
Accompanying drawing 1 is the electrical block diagram of the utility model.
Five, embodiment:
In conjunction with accompanying drawing 1, the utility model is done further to describe:
The utility model mainly is made up of power switch 1, insurance 2, high-precision digital ohmmeter 3, high precision adjustable resistor 4, double-throw switch 5,100 Europe resistance 8, splicing ear 6, connection terminal 7; The 220V AC power provides working power through power switch 1, insurance 2 for high-precision digital ohmmeter 3, and the two ends of 100 Europe resistance 8 are connected separately with splicing ear 6; The common junction of the output terminal of high precision adjustable resistor 4 and double-throw switch 5 is connected in parallel, and the input end of high-precision digital ohmmeter 3 and double-throw switch 5 one side joints point are connected in parallel, and the opposite side contact and the connection terminal 7 of double-throw switch 5 are connected in parallel.Through two diverse locations of double-throw switch 5 can realize high precision adjustable resistor 4 respectively with being connected in parallel separately of high-precision digital ohmmeter 3 and connection terminal 7.
When using this device check number to show temperature controller; At first break off the lead-in wire that measurand shows temperature controller external loop Pt100 thermal resistance; The terminal of the apparent temperature controller disconnection of measurand thermal resistance lead-in wire is connected to the connection terminal 7 of this device with the test connecting line; Behind the engaging means power supply; Double-throw switch 5 is placed the position that high precision adjustable resistor 4 and high-precision digital ohmmeter 3 are connected in parallel separately, and at this moment, the resistance value that high-precision digital ohmmeter 3 is shown according to the branch kilsyth basalt scalable high precision adjustable resistor 4 of Pt100 thermal resistance reaches requirement; Then double-throw switch 5 is placed the opposite side position; The high precision adjustable resistor 4 that regulates is connected in parallel separately with connection terminal 7, and whether the actual numerical value that can observe the apparent temperature controller demonstration of measurand this moment meets the requirement that the Pt100 thermal resistance divides kilsyth basalt, realizes the on-the-spot purpose of checking the apparent temperature controller of measurand of judging fast with this.100 Europe resistance of setting up in the device 8 and splicing ear 6 are that above-mentioned each element has unusual damage or field device working power can not satisfy under the service condition in this device; Whether just often the quick test measurand shows temperature controller and only when input resistance value 100 Europe, shows usefulness; Can directly splicing ear 6 be connected to measurand during use and show temperature controller with the test connecting line; According to the requirement that the Pt100 thermal resistance divides kilsyth basalt, during resistance value 100 Europe, temperature controller should be shown as 0 degree.
Claims (2)
1. transformer digital display temperature controller quick test device; It is characterized in that: mainly form by power switch, insurance, high-precision digital ohmmeter, high precision adjustable resistor, double-throw switch, 100 Europe resistance, splicing ear, connection terminal; The 220V AC power provides working power through power switch, insurance for the high-precision digital ohmmeter, and the two ends of 100 Europe resistance are connected separately with splicing ear; The output terminal of high precision adjustable resistor and the common junction of double-throw switch are connected in parallel, and the input end of high-precision digital ohmmeter and double-throw switch one side joint point are connected in parallel, and the opposite side contact and the connection terminal of double-throw switch are connected in parallel.
2. transformer digital display temperature controller quick test device according to claim 1 is characterized in that: described double-throw switch through two different positions can realize the high precision adjustable resistor respectively with being connected in parallel separately of high-precision digital ohmmeter and connection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200340423U CN202383519U (en) | 2012-01-03 | 2012-01-03 | Rapid detection device of digital display temperature controller for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200340423U CN202383519U (en) | 2012-01-03 | 2012-01-03 | Rapid detection device of digital display temperature controller for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383519U true CN202383519U (en) | 2012-08-15 |
Family
ID=46632011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200340423U Expired - Fee Related CN202383519U (en) | 2012-01-03 | 2012-01-03 | Rapid detection device of digital display temperature controller for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202383519U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744418A (en) * | 2013-12-28 | 2014-04-23 | 柳州力通车用空调有限公司 | Air conditioner temperature controller detecting apparatus |
| CN105171175A (en) * | 2015-08-24 | 2015-12-23 | 王志 | Heat preserving and burn-down preventing device for electric soldering iron |
| CN108844663A (en) * | 2018-06-29 | 2018-11-20 | 三峡大学 | A kind of substation's digital display type main transformer temperature system failure detection method and device |
-
2012
- 2012-01-03 CN CN2012200340423U patent/CN202383519U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744418A (en) * | 2013-12-28 | 2014-04-23 | 柳州力通车用空调有限公司 | Air conditioner temperature controller detecting apparatus |
| CN105171175A (en) * | 2015-08-24 | 2015-12-23 | 王志 | Heat preserving and burn-down preventing device for electric soldering iron |
| CN108844663A (en) * | 2018-06-29 | 2018-11-20 | 三峡大学 | A kind of substation's digital display type main transformer temperature system failure detection method and 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: 20120815 Termination date: 20130103 |