CN218765709U - Digital temperature indication regulator calibration device - Google Patents
Digital temperature indication regulator calibration device Download PDFInfo
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- CN218765709U CN218765709U CN202221256413.2U CN202221256413U CN218765709U CN 218765709 U CN218765709 U CN 218765709U CN 202221256413 U CN202221256413 U CN 202221256413U CN 218765709 U CN218765709 U CN 218765709U
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Abstract
The utility model discloses a digital temperature indication regulator calibration equipment relates to the calibration field of digital temperature indication regulator, including temperature indication regulator one, temperature indication regulator two, direct current resistance appearance one, direct current resistance appearance two, electrical power generating system, insulation resistance tester, dielectric strength tester, water and electricity computer monitoring system. The utility model discloses a with the direct current resistance case, the test wire, digital temperature indication adjustment appearance combines organically, realize the check-up function to digital temperature indication adjustment appearance, when new installation of power station or when needing to change digital temperature indication adjustment appearance or maintenance test, this equipment of accessible checks up the device, ensure that equipment operation is normal, it is significant to the protection of hydraulic turbine axle bush, can realize the check-up of digital temperature indication adjustment appearance, three-wire system temperature measurement resistance through the insulation resistance case simulation generator scene, change resistance that can be more convenient, realize the full stroke check-up of temperature adjustment appearance.
Description
Technical Field
The utility model relates to a check-up field of digital temperature indication regulator specifically is a digital temperature indication regulator calibration equipment.
Background
The digital temperature indicating regulator is the most common monitoring instrument in industrial process and is mainly used for temperature monitoring and alarming. Generally, a single chip microcomputer technology is adopted, and the temperature to be monitored is collected in a centralized manner and displayed. The instrument is widely applied to various industrial automation systems in the industries of hydropower stations, metallurgy, chemical engineering and the like, and has the advantages of strong function, small volume and high reliability, the temperature indication regulator is connected with a three-wire system temperature measuring resistor on the site of a generator through a lead wire, the resistance value on the site is converted into corresponding temperature, the corresponding temperature is transmitted to places such as a generator layer and the like to be visually displayed, the overtemperature alarm function is realized, the multipath temperature can be detected and controlled, a hydraulic turbine of a certain hydropower station is provided with an upper lead, a lower lead, a water lead and a thrust bearing to play a supporting role on the hydraulic turbine, the guide bearing bushes are provided with PT100 platinum resistance temperature measuring resistors, the digital temperature indication regulator is introduced into the guide bearing bushes to realize the functions of monitoring the temperature and the oil temperature of each bearing in real time, when the temperature exceeds an alarm value, the output of a corresponding alarm signal can be realized, the output is input into a hydropower computer monitoring system to be used for the shutdown protection action condition of the generator, and the safe and stable operation of a hydropower station unit are of great significance.
Before the digital temperature indication regulator is put into use formally, the digital temperature indication regulator needs to be checked, and how to check the digital temperature indication regulator ensures that the equipment runs well, thereby being the basis for realizing safe production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problem of inconvenient digital temperature indication regulator inspection, a digital temperature indication regulator calibration device is provided.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a digital temperature indication regulator calibration equipment, includes temperature indication regulator one, temperature indication regulator two, its characterized in that, temperature indication regulator one with the power connection end of temperature indication regulator two is connected with electrical power generating system through the wire, temperature indication regulator one with the data output end of temperature indication regulator two is connected with water and electricity computer monitoring system through the wire, the data receiving end of temperature indication regulator one, temperature indication regulator is connected with direct current resistance appearance one, direct current resistance appearance two respectively through the wire.
As a further aspect of the present invention: the temperature indication adjusting instrument I and the temperature indication adjusting instrument II are connected with an insulation resistance tester in a power-off state, the L end of the insulation resistance tester is connected with any one power line of the temperature indication adjusting instrument I and the temperature indication adjusting instrument II, and the E end of the insulation resistance tester is connected with the shells of the temperature indication adjusting instrument I and the temperature indication adjusting instrument II.
As a further aspect of the present invention: the first temperature indication adjusting instrument and the second temperature indication adjusting instrument are further connected with an insulation strength tester in a power-off state, one end of the insulation strength tester is clamped on shells of the first temperature indication adjusting instrument and the second temperature indication adjusting instrument, and the other end of the insulation strength tester is connected to any one input power end of the first temperature indication adjusting instrument and the second temperature indication adjusting instrument.
As the utility model discloses further scheme again: the direct current resistance meter I and the direct current resistance meter II are both adjustable resistance boxes, and adjusting knobs are arranged on the direct current resistance meter I and the direct current resistance meter II.
As a further aspect of the present invention: the first temperature indication regulator and the second temperature indication regulator are independently connected to the power supply system.
As the utility model discloses further scheme again: the test points of the first temperature indication adjusting instrument and the second temperature indication adjusting instrument are not less than five.
Compared with the prior art, the beneficial effects of the utility model are that:
through with the direct current resistance case, the experimental wire, digital temperature indication regulator organic combination, the realization is to the check-up function of digital temperature indication regulator, when the power station new installation or need change digital temperature indication regulator or maintenance test, this equipment of accessible carries out the check-up to the device, ensure that equipment operation is normal, it is significant to the protection of hydraulic turbine axle bush, can realize the check-up of digital temperature indication regulator, through the three-wire system temperature measurement resistance of insulation resistance case simulation generator scene, change resistance that can be more convenient, realize the full stroke check-up of temperature regulator.
Drawings
Fig. 1 is a schematic view of the composition structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1, in an embodiment of the present invention, a digital temperature indication regulator calibration apparatus, including temperature indication regulator one, temperature indication regulator two, its characterized in that, the power connection terminal of temperature indication regulator one and temperature indication regulator two is connected with electrical power system through the wire, the data output end of temperature indication regulator one and temperature indication regulator two is connected with water and electricity computer monitoring system through the wire, temperature indication regulator one, the data receiving end of temperature indication regulator is connected with direct current resistance appearance one, direct current resistance appearance two respectively through the wire.
In this embodiment: when the test is started, the first temperature indicator and the second temperature indicator are connected with a power supply system, the first temperature indicator and the second temperature indicator can respectively detect the resistance values of the first direct current resistor and the second direct current resistor by adjusting the resistance values of the first direct current resistor and the second direct current resistor, the resistance values are converted into corresponding temperatures, temperature data are transmitted to a hydroelectric computer monitoring system, the hydroelectric computer monitoring system records the display temperatures of the first temperature indicator and the second direct current resistor, the theoretical output values are calculated to be compared with the actual output values of the first temperature indicator and the second temperature indicator, the conversion accuracy of the first temperature indicator and the second temperature indicator is judged, when the first direct current resistor and the second direct current resistor output the resistors corresponding to the temperature alarm values set in a factory, the hydroelectric computer monitoring system checks whether a high-temperature alarm signal can be received or not, the alarm output function of the first temperature indicator can be checked whether the hydroelectric computer monitoring system is intact or not, the resistance values of the two direct current resistors are changed to enable the input temperature to be larger than the alarm value, whether the alarm output action of the digital temperature indicator is observed, whether the corresponding to be detected, and whether the resistance value of the corresponding hydroelectric computer monitoring relay is observed, and the hydroelectric computer is observed.
Please refer to fig. 1, the first temperature indicating regulator and the second temperature indicating regulator are connected to the insulation resistance tester in the power-off state, the L-terminal of the insulation resistance tester is connected to any one of the power lines of the first temperature indicating regulator and the second temperature indicating regulator, and the E-terminal of the insulation resistance tester is connected to the housings of the first temperature indicating regulator and the second temperature indicating regulator.
In this embodiment, the power supply of the device to be tested is cut off, the device is grounded to discharge, the edge resistance tester is verified, the zero point is verified firstly, the scale is fully verified, after the zero point and the full point of the device are normal, the L end of the insulation resistance tester is connected to any power line of the digital temperature indication regulator, the E end of the insulation resistance tester is connected to the shell of the digital temperature indication regulator, the 500V gear is selected, the start button is pressed, the insulation resistance value is recorded, the recorded data is compared with the standard value, the data error is calculated, the verification conclusion is obtained, and after the verification is finished, the digital temperature indication regulator is grounded to discharge.
Please refer to fig. 1, the first temperature indicating regulator and the second temperature indicating regulator are further connected with an insulation strength tester in a power-off state, one end of the insulation strength tester is clamped on the shells of the first temperature indicating regulator and the second temperature indicating regulator, and the other end of the insulation strength tester is connected to any one input power end of the first temperature indicating regulator and the second temperature indicating regulator.
In this embodiment, one end of the insulation strength tester is directly clamped on the housing of the device to be tested, the other end of the tester is connected to any input power end of the device to be tested, the voltage is slowly adjusted to the voltage withstanding value of the device to be tested, if the device does not alarm, the device to be tested and an operator need to be insulated during testing, and therefore electric shock is prevented.
Please refer to fig. 1, the first dc resistance meter and the second dc resistance meter are both adjustable resistance boxes, and the first dc resistance meter and the second dc resistance meter are provided with adjusting knobs.
In this embodiment: the size of the output resistance value can be changed through the knob, the three-wire resistor is used for simulating field transmission, the resistance values of the direct current resistance instrument I and the direct current resistance instrument II are changed, the resistance values are input into the digital temperature indication adjusting instrument, the display value of the digital temperature indication adjusting instrument is recorded, the corresponding temperature of the resistor is compared with the display temperature, and the error between the two is calculated.
Please refer to fig. 1, the first temperature indicating regulator and the second temperature indicating regulator are connected to the power system separately.
In this embodiment: the mutual interference generated when the first temperature indication adjusting instrument and the second temperature indication adjusting instrument are operated is prevented.
Please refer to fig. 1, the test points of the first temperature indication regulator and the second temperature indication regulator are not less than five for the first current resistance meter and the second direct current resistance meter.
In this embodiment: by this operation, the accuracy of the detected value is increased, thereby reducing the detection error.
The working principle is as follows: the method comprises the steps of firstly connecting a digital temperature indication regulator to a power supply, confirming whether equipment runs normally when the equipment is started, enabling a display unit to have no breakpoint phenomenon, preparing two direct current resistance meters, simulating input of a PT100 platinum resistor, connecting the resistor to two input terminals of the digital temperature indication regulator by using three leads respectively, confirming firm connection, operating output of the direct current resistance meters, setting 100 ohms and 138.5 ohms respectively, outputting 0 ℃ and 100 ℃ by a display part of the digital temperature indication regulator, checking zero points and full points of the equipment, recording output data, adjusting a knob on the direct current resistance meters, equally dividing 100 ℃, simulating output conditions of each point respectively, checking accuracy of each point of the digital temperature indication regulator, recording corresponding data, connecting the digital temperature indication regulator to an insulation resistance tester, testing insulation resistance values of the equipment, and recording corresponding data. And comparing the recorded data with the standard value, calculating a data error to obtain a verification conclusion, accessing the digital temperature indication regulator into the insulation strength calibrator, testing the insulation resistance value of the equipment, recording corresponding data, comparing the recorded data with the standard value, calculating the data error, and obtaining the verification conclusion.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a digital temperature indication regulator calibration equipment, includes temperature indication regulator one, temperature indication regulator two, its characterized in that, temperature indication regulator one with the power connection end of temperature indication regulator two is connected with electrical power generating system through the wire, temperature indication regulator one with the data output end of temperature indication regulator two is connected with water and electricity computer monitoring system through the wire, the data receiving end of temperature indication regulator one, temperature indication regulator is connected with direct current resistance appearance one, direct current resistance appearance two respectively through the wire.
2. The checking device for the digital temperature indicating and adjusting instrument according to claim 1, wherein the first temperature indicating and adjusting instrument and the second temperature indicating and adjusting instrument are connected with an insulation resistance tester in a power-off state, an L end of the insulation resistance tester is connected with any one power line of the first temperature indicating and adjusting instrument and the second temperature indicating and adjusting instrument, and an E end of the insulation resistance tester is connected with shells of the first temperature indicating and adjusting instrument and the second temperature indicating and adjusting instrument.
3. The digital temperature indication regulator checking device according to claim 1, wherein an insulation strength tester is further connected to the first temperature indication regulator and the second temperature indication regulator in a power-off state, one end of the insulation strength tester is clamped on a shell of the first temperature indication regulator and the second temperature indication regulator, and the other end of the insulation strength tester is connected to any one input power end of the first temperature indication regulator and the second temperature indication regulator.
4. The digital temperature indication regulator checking device according to claim 1, wherein the first direct current resistance meter and the second direct current resistance meter are both adjustable resistance boxes, and the first direct current resistance meter and the second direct current resistance meter are provided with adjusting knobs.
5. The digital temperature indicating regulator verification device according to claim 1, wherein the first temperature indicating regulator and the second temperature indicating regulator are separately connected to the power supply system.
6. The digital temperature indicating regulator verifying unit as claimed in claim 1, wherein the test points of the first temperature indicating regulator and the second temperature indicating regulator are not less than five.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221256413.2U CN218765709U (en) | 2022-05-24 | 2022-05-24 | Digital temperature indication regulator calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221256413.2U CN218765709U (en) | 2022-05-24 | 2022-05-24 | Digital temperature indication regulator calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218765709U true CN218765709U (en) | 2023-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221256413.2U Active CN218765709U (en) | 2022-05-24 | 2022-05-24 | Digital temperature indication regulator calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218765709U (en) |
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2022
- 2022-05-24 CN CN202221256413.2U patent/CN218765709U/en active Active
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