CN204855031U - Automatic calibration equipment of thermocouple based on PLC - Google Patents
Automatic calibration equipment of thermocouple based on PLC Download PDFInfo
- Publication number
- CN204855031U CN204855031U CN201520601832.9U CN201520601832U CN204855031U CN 204855031 U CN204855031 U CN 204855031U CN 201520601832 U CN201520601832 U CN 201520601832U CN 204855031 U CN204855031 U CN 204855031U
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- CN
- China
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- plc
- thermopair
- thermocouple
- check
- host computer
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- 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
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Abstract
Automatic calibration equipment of thermocouple based on PLC relates to a calibrating installation, the device is constituteed including two parts of check -up subtotal data processing: check -up part is including voltage regulator, electric stove, 24V D. C. Regulated power supply, standard couple, by the school thermocouple, the control end of voltage regulator links to each other with PLC, and the output links to each other with the electric stove, 24V D. C. Regulated power supply links to each other with PLC, the data processing part is including PLC, EM231, host computer, the thermocouple winding displacement links to each other with PLC, and PLC is connected through the PPI cable with the host computer. The device utilizes PLC to carry out the check -up to the thermocouple, can utilize PLC to carry out the accurate control to the electric stove to carry out the batch check -up to the thermocouple, install small, convenient operation, be applicable to the power plant of various scales.
Description
Technical field
The utility model relates to a kind of calibrating installation, particularly relates to a kind of thermopair automatic check device based on PLC.
Background technology
At present, along with the develop rapidly of national economy, role is more and more important wherein as a kind of important energy source for electricity, and this just has higher requirement to the stability of electric system and security.Thermopair is the widely used temperature-measuring element in fuel-burning power plant, and the periodic check of thermopair is also extremely important, but too huge and expensive for the thermopair calibration equipment used now middle-size and small-size power plant.Heat power engineering signal calibration equipment in the market has two classes, and one is SCM Based hand-held tester, and volume is little, and cost is also relatively low, but can only verify single thermopair, can not verify in batches.Also have one to be based on industrial computer, coordinate the calibrating installation of special purpose interface card, equipment is complicated, and cost is higher, can realize batch verification.
Summary of the invention
The purpose of this utility model is to provide a kind of thermopair automatic check device based on PLC, this device utilizes PLC to verify thermopair, PLC can be utilized accurately to control electric furnace, and batch verification is carried out to thermopair, device volume is little, easy to operate, is applicable to the power plant of various scale.
The purpose of this utility model is achieved through the following technical solutions:
Based on the thermopair automatic check device of PLC, described device comprise check part and data processing two part composition: check part comprise pressure regulator, electric furnace, 24V D.C. regulated power supply, standard couple, by school thermopair; The control end of pressure regulator is connected with PLC, and output terminal is connected with electric furnace; 24V D.C. regulated power supply is connected with PLC; Data processing section comprises PLC, EM231, host computer; Thermopair winding displacement is connected with PLC, and PLC is connected by PPI cable with host computer.
The described thermopair automatic check device based on PLC, described thermopair with inserted in electric furnace by school thermopair.
The described thermopair automatic check device based on PLC, is characterized in that, described EM231 is thermopair special module.
Advantage of the present utility model and effect are:
1. the utility model PLC miniaturization, modularization, can Rapid Combination as required, and software kit function is strong, easily realize the Visualized Monitoring System that observing and controlling is pipe integrated, construction cycle is short, reliability is high, cost is lower, can further upgrade and develop, have market-oriented potentiality.
2. the utility model have measure accurately, batch operation can be carried out, easily realize the pipe integrated visual control of observing and controlling, the construction cycle is short, cost is lower, can further upgrade and the advantage such as exploitation.The utility model can utilize special module to verify batch thermopair.And cost is lower, simple to operate, equipment take up an area little be convenient to dismounting and be easy to batch production processing.
Accompanying drawing explanation
Fig. 1 is the utility model equipment wiring schematic diagram.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is described in detail.
In figure: 1-pressure regulator; 2-electric furnace; 3-EM231; 4-S7-200PLC; 5-24V D.C. regulated power supply; 6-standard couple; 7-is by school thermopair; 8-host computer.
Control structure of the present utility model is primarily of check part and data processing two part composition: as shown in Figure 1, check part mainly comprises pressure regulator, electric furnace, 24V D.C. regulated power supply, standard couple, formed by school thermopair.The control end of pressure regulator is connected with PLC, and output terminal is connected with electric furnace; 24V D.C. regulated power supply is connected with PLC, for PLC provides power supply.By standard couple with inserted electric furnace by school thermopair after, working procedure on PLC, regulates transformer output voltage thus reaches the control to electric furnace furnace temperature.Data processing section mainly comprises PLC, EM231, host computer composition, and EM231 is thermopair special module, and process the signal that thermopair comes, be connected with PLC by winding displacement, PLC is connected by PPI cable with host computer.
The utility model adopts PLC organized data collection and automatic Verification algorithm routine to realize thermopair automatic Verification, in host computer, adopt monitoring software to design monitored picture, realize host computer real-time monitoring and control, host computer doubles as PLC programming and debugging acid simultaneously.
The utility model is divided into checkout terminal and data processing end.Checkout terminal mainly comprises electric furnace, power supply; Data processing end is then formed primarily of PLC and host computer.When verifying, being placed in electric furnace, switching on power standard hot even summation verification thermopair, PLC will carry out adjustment according to built-in command to voltage and realize verification temperature spot, and verify by verification thermopair, result will be sent on host computer and show.
Claims (3)
1., based on the thermopair automatic check device of PLC, it is characterized in that, described device comprise check part and data processing two part composition: check part comprise pressure regulator, electric furnace, 24V D.C. regulated power supply, standard couple, by school thermopair; The control end of pressure regulator is connected with PLC, and output terminal is connected with electric furnace; 24V D.C. regulated power supply is connected with PLC; Data processing section comprises PLC, EM231, host computer; Thermopair winding displacement is connected with PLC, and PLC is connected by PPI cable with host computer.
2. the thermopair automatic check device based on PLC according to claim 1, is characterized in that, described thermopair with inserted in electric furnace by school thermopair.
3. the thermopair automatic check device based on PLC according to claim 1, is characterized in that, described EM231 is thermopair special module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601832.9U CN204855031U (en) | 2015-08-12 | 2015-08-12 | Automatic calibration equipment of thermocouple based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520601832.9U CN204855031U (en) | 2015-08-12 | 2015-08-12 | Automatic calibration equipment of thermocouple based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855031U true CN204855031U (en) | 2015-12-09 |
Family
ID=54745570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520601832.9U Expired - Fee Related CN204855031U (en) | 2015-08-12 | 2015-08-12 | Automatic calibration equipment of thermocouple based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855031U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507706A (en) * | 2018-05-18 | 2018-09-07 | 东南大学 | A kind of micro-nano thermocouple automation batch caliberating device |
| CN110702275A (en) * | 2019-11-22 | 2020-01-17 | 四川中烟工业有限责任公司 | Correction method for offset of resistance type temperature sensor |
-
2015
- 2015-08-12 CN CN201520601832.9U patent/CN204855031U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507706A (en) * | 2018-05-18 | 2018-09-07 | 东南大学 | A kind of micro-nano thermocouple automation batch caliberating device |
| CN108507706B (en) * | 2018-05-18 | 2020-06-16 | 东南大学 | Automatic batch calibration device for micro-nano thermocouples |
| CN110702275A (en) * | 2019-11-22 | 2020-01-17 | 四川中烟工业有限责任公司 | Correction method for offset of resistance type temperature sensor |
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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 |
Granted publication date: 20151209 Termination date: 20160812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |