CN205642624U - Infrared thermodetector - Google Patents
Infrared thermodetector Download PDFInfo
- Publication number
- CN205642624U CN205642624U CN201620239821.5U CN201620239821U CN205642624U CN 205642624 U CN205642624 U CN 205642624U CN 201620239821 U CN201620239821 U CN 201620239821U CN 205642624 U CN205642624 U CN 205642624U
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- air
- infrared
- thick bamboo
- measuring cylinder
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Abstract
The utility model discloses an infrared thermodetector, including an operating instrument and a measurement section of thick bamboo, infrared probe is equipped with in the cylindric shell of measuring a section of thick bamboo, light trap, the downthehole quartz glass that is equipped with be equipped with on the top of shell, the signal output part and the singlechip in the operating instrument of infrared probe are connected, be equipped with along the airflow channel of circumference in the section of thick bamboo wall of shell, this airflow channel's both ends are equipped with air inlet and gas outlet respectively, and this air inlet passes through the breather pipe and is connected with the air supply, the shell bottom of a measurement section of thick bamboo be equipped with the air current intermediate layer to through connecting pipe with the gas outlet connect, the one end in a takeover is connected to the bottom of this shell, and the air current intermediate layer that should take over the bottom of this end and shell communicates with each other, electric valve is equipped with in this takeover, this electric valve's controlled end with control instrument connecting. The utility model has the advantages that use infrared probe to replace the gas temperature probe, and then practiced thrift the cost, improved measurement accuracy greatly.
Description
Technical field
This utility model relates to a kind of infrared temperature measurement apparatus, is mainly used in thermal power plant and monitors boiler smoke temperature.
Background technology
At present, a lot of thermal power plants application prior art monitors stove cigarette temperature, such as the direct method of measurement or employing
Calculating method, direct measuring can be divided into plug-in type and non-insertion.Operations staff can use this letter
Breath regulates burning.If there is deviation in actual value and design load, it will cause unfavorable condition: water-cooling wall,
The cokings such as superheater, economizer, air preheater and dust stratification increase；Superheater and reheater tube corrosion
Speed increases；Cause convective region pipe overtemperature, need more temperature to regulate；Change original design
Operating mode, makes operations staff be difficult to operate；Boiler export cigarette temperature raises, and causes heat loss to increase, fall
Low boiler thermal output.And the most newly-built chemical industry private station, employ infrared burner hearth temperature widely
Degree meter monitors the burner hearth cigarette temperature of full flue gas in whole combustion process continuously.
Infrared temperature-test technology achieves very good effect after flue gas is measured, and boiler is burned
Cheng Zhong, its fuels such as coal, natural gas and heavy oil etc. can decomposite the material of Multiple components, constitute very
Complicated.Only just have for gas SO2, NOX and COX etc. ten several, therefore generally measure non-
Often difficulty, general infrared radiation thermometer can not complete this task.The temperature measurer of prior art uses
The infrared measurement of temperature detector being made up of thin film thermoelectric element and infrared filter, aims at detection CO2 gas
And design, infrared filter can stop the infrared ray of its all band, and only allows CO2 gas to discharge
Characteristic wavelength pass through, thus exclude other interference factor, sensor Accurate Determining is in its ken
CO2 temperature in interior flue gas, and it is converted into rapidly flue-gas temperature by computer chip.
Existing infrared temperature measurement apparatus mainly includes control instrument and measuring cylinder (assembly), in measuring cylinder
Cylindric shell built with infrared probe, on the top of shell equipped with loophole, hole is built with stone
English glass；Signal output part at infrared probe is connected with control instrument, and control instrument is built with monolithic
Machine.During use, measuring cylinder assembly being located at boiler fire door, loophole gathers the red of intracranial facing to fire door
Outside line.Owing at the ignition of the boiler initial stage, flue gas temperature of hearth outlet is too high, on the impact of measuring cylinder very
Greatly, certainty of measurement is caused to decline.
Utility model content
This utility model aims to provide a kind of infrared temperature measurement apparatus, with solve that prior art exists at pot
At the furnace igniting initial stage, flue gas temperature of hearth outlet is too high, and the impact on measuring cylinder is very big, causes measuring essence
The problem that degree declines.
The technical solution of the utility model is:
A kind of infrared temperature measurement apparatus, including control instrument and measuring cylinder, cylindric in measuring cylinder
Shell is built with infrared probe, and on the top of shell equipped with loophole, hole is built with quartz glass；Red
The signal output part of outer probe is connected with the single-chip microcomputer in control instrument；Wherein, at described shell
Gas channel circumferentially it is provided with, being respectively arranged at two ends with air inlet and going out at this gas channel in barrel
QI KOU, this air inlet is connected with source of the gas by breather；It is provided with in the shell bottom of described measuring cylinder
Air-flow interlayer, and be connected with described gas outlet by connecting trachea；The bottom of this shell is connected to one
One end of adapter, this end of this adapter communicates with the air-flow interlayer of the bottom of shell；In this adapter equipped with
Electrically operated valve, the controlled end of this electrically operated valve is connected with described control instrument.
Preferably, described gas channel is the spiral helicine hole being located in shell wall basic unit.
Major advantage of the present utility model includes: employs infrared probe and instead of cigarette temperature probe, enters
And saved cost, substantially increase certainty of measurement；By injecting compressed air in measuring cylinder, energy
Enough ensure that the temperature in shell is not affected by external temperature, substantially increases certainty of measurement.
Accompanying drawing explanation
Fig. 1 is population structure schematic diagram of the present utility model；
Fig. 2 is the structural representation (the A-A sectional view of Fig. 3) of measuring cylinder assembly in Fig. 1；
Fig. 3 is the left view of Fig. 2.
Detailed description of the invention
Seeing Fig. 1～Fig. 3, this utility model one infrared temperature measurement apparatus, including control instrument 17
With measuring cylinder 11, at the cylindric shell of measuring cylinder 11 built with infrared probe 14, at shell
Top is equipped with loophole 4, and hole is built with quartz glass；The signal output part of infrared probe 14 and control
Single-chip microcomputer in instrument 17 processed connects；It is provided with in the barrel of the shell of described measuring cylinder 11 along circle
The spiral helicine gas channel 10 in week, is respectively arranged at two ends with air inlet 13 at this gas channel 10
With gas outlet 19, this air inlet 13 is connected with air source box 16 by breather 18；In described survey
The shell bottom of graduated cylinder 11 is provided with air-flow interlayer, and by connecting trachea 12 and described gas outlet
19 connect.The bottom of this shell by flange 8 and bolt 15 be connected to one end of an adapter 6 (with
The air-flow interlayer of the bottom of shell communicates), linkage interface is provided with sealing ring 9.This adapter 6 fills
Having electrically operated valve 7, the controlled end of this electrically operated valve 7 is with described control instrument 17 (single-chip microcomputer) even
Connect.
This utility model in a pre-installation, needs to lay temperature measuring equipment power supply line and holding wire power supply
For 5VDC ± 10%, terminal connection terminal board distance boiler erection mouth 1.5-2m.Lay temperature measuring equipment
The compressed air line needed, 24 hours continual compressed airs, supply air line caliber >=10mm,
Terminal pressure 0.3-0.7MPa, pipeline terminal distance boiler observation port 1.5-2m and equipped with Pressure gauge,
Valve and air relief valve, pressure gage measuring range is 0-1.0MPa, air relief valve range of regulation 0.1-0.7MPa,
Flow 0.2m3/min.The way of output is digital-scroll technique, 4 20mA, RS485.Corresponding temperature is
400-1200℃；800-1600℃.
This utility model has simple installation, uses the features such as reliable, need not add instrument and equipment,
Directly measured temperature can be entered DCS system by outputting standard analogue signal, carry out online
Monitoring.Once ambient temperature exceedes certain limit, and control instrument automatically turns on electrically operated valve, compression sky
Cooling gas channel in QI prostration measuring cylinder shell interlayer, cools down this instrument and purges, foot
To adapt to various severe site environment.
Claims (2)
1. an infrared temperature measurement apparatus, including control instrument and measuring cylinder, on the top of shell equipped with
Loophole, hole is built with quartz glass；The signal output part of infrared probe and the monolithic in control instrument
Machine connects, it is characterised in that: at the cylindric shell of measuring cylinder built with infrared probe, described
It is provided with gas channel circumferentially in the barrel of shell, is respectively arranged at two ends with air inlet at this gas channel
Mouth and gas outlet, this air inlet is connected with source of the gas by breather；At the bottom of the shell of described measuring cylinder
End is provided with air-flow interlayer, and is connected with described gas outlet by connecting trachea；The bottom of this shell is even
Being connected on one end of an adapter, this end of this adapter communicates with the air-flow interlayer of the bottom of shell；In this adapter
On be connected with described control instrument equipped with electrically operated valve, the controlled end of this electrically operated valve.
Infrared temperature measurement apparatus the most according to claim 1, it is characterised in that: described air-flow leads to
Road is the spiral helicine hole being located in shell wall basic unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620239821.5U CN205642624U (en) | 2016-03-25 | 2016-03-25 | Infrared thermodetector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620239821.5U CN205642624U (en) | 2016-03-25 | 2016-03-25 | Infrared thermodetector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205642624U true CN205642624U (en) | 2016-10-12 |
Family
ID=57075394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620239821.5U Active CN205642624U (en) | 2016-03-25 | 2016-03-25 | Infrared thermodetector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205642624U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120526A (en) * | 2016-11-26 | 2018-06-05 | 杨启璋 | Burner hearth temp measuring system |
| CN110530086A (en) * | 2018-05-25 | 2019-12-03 | 神华宁夏煤业集团有限责任公司 | A kind of high-temperature service reducing temperature of heatstroke prevention autocontrol method and its device |
-
2016
- 2016-03-25 CN CN201620239821.5U patent/CN205642624U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120526A (en) * | 2016-11-26 | 2018-06-05 | 杨启璋 | Burner hearth temp measuring system |
| CN110530086A (en) * | 2018-05-25 | 2019-12-03 | 神华宁夏煤业集团有限责任公司 | A kind of high-temperature service reducing temperature of heatstroke prevention autocontrol method and its device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |