CN206378417U - Laser nitrogen potential analysis sensor - Google Patents
Laser nitrogen potential analysis sensor Download PDFInfo
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- CN206378417U CN206378417U CN201621341216.5U CN201621341216U CN206378417U CN 206378417 U CN206378417 U CN 206378417U CN 201621341216 U CN201621341216 U CN 201621341216U CN 206378417 U CN206378417 U CN 206378417U
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Abstract
The utility model is related to a kind of laser nitrogen potential analysis sensor, include generating laser, laser pickoff, transmitting built-in circuit, reception built-in circuit, mounting seat, generating laser, laser pickoff, transmitting built-in circuit, reception built-in circuit are separately mounted in mounting seat, and transmitting built-in circuit is connected with generating laser, receive built-in circuit with laser pickoff to be connected, the light path of generating laser and the light path of laser pickoff are on one.The utility model is arranged on nitriding furnace by mounting seat, and generating laser sends a branch of specific wavelength and the laser beam of intensity, laser beam passes through nitriding gas in nitriding furnace burner hearth, the laser pickoff for being installed in nitriding furnace burner hearth opposite is received, built-in circuit calculates gas content by the light intensity variable signal of laser before and after the absorption that receives, then calculates nitrogen gesture by existing " atmosphere content/nitrogen gesture changes mathematical modeling ".And with standard traffic signal output to control computer, modulate and control nitrogen gesture.
Description
Technical field
The utility model belongs to the technical field that nitrogen gesture is measured in kind of measurement heat treatment nitridation process, is related to a kind of laser nitrogen
Potential analysis sensor.
Background technology
Nitriding, is a kind of Technology for Heating Processing, and precision component is placed in heat treatment nitriding furnace and heated, ammonia is passed through in burner hearth
Formed after the gas such as gas and traces of carbon dioxide, Pintsch process and mainly contain nitrogen-atoms nitriding gas, high temperature causes nitrogen-atoms to ooze
Enter the surface of steel part.Nitridation process can obtain outstanding mechanical performance on the premise of smaller thermal deformation.With the quantity of nitrogen-atoms
Based on quantities be referred to as nitrogen gesture.It is to obtain unique side of the mechanical performance of part after the nitriding needed to detect and adjust nitrogen gesture
Method.
Current most common method is that the hydrogen content in nitriding gas is detected using HydroNit sensor, is calculated for right in hydrogen content
The quantity for the nitrogen-atoms answered obtains nitrogen gesture.Because HydroNit sensor method is indirectly to extrapolate nitrogen gesture by measuring the content of hydrogen, transport
Calculate complicated, precision is low, and the reaction time is slow.Hydrogen content in HydroNit sensor measurement stove, can only use the sensor of thermal conduction principle.In stove its
He can have a strong impact on the detection reliability and precision of hydrogen sensor, or even nothing with gas at other close with hydrogen thermal conductivity rate score
Method is used.
Nitriding gas predominant amount is ammonia, is a kind of active chemical substance of comparison, when the gas temperature of burner hearth is fluctuated
Or during dew point rise, condense precipitation ammonium salt and vapor deposition causes sensor not work in the narrow and small tube chamber of HydroNit sensor.
The content of the invention
The utility model there is provided a kind of laser nitrogen potential analysis sensor, is used in order to overcome the above-mentioned deficiencies of the prior art
Use HydroNit sensor measurement nitrogen gesture the most frequently used at present is solved, precision is low, and the reaction time is slow, and easily corrosion and blocking leads to not connect
The defect of continuous work.
The technical scheme that the utility model is used is：
Laser nitrogen potential analysis sensor, includes generating laser, laser pickoff, transmitting built-in circuit, reception in-built electrical
Road, mounting seat, it is characterised in that：Generating laser, laser pickoff, transmitting built-in circuit, reception built-in circuit are respectively mounted
In mounting seat, and transmitting built-in circuit is connected with generating laser, receives built-in circuit and is connected with laser pickoff, laser hair
The light path of emitter and the light path of laser pickoff are on one.
The utility model also includes two block protection eyeglasses, in generating laser and laser pickoff with respect to nitriding furnace burner hearth one
Install and be respectively mounted a block protection eyeglass in side.
The utility model also includes two protective covers, and a protection is respectively mounted on generating laser and laser pickoff
Cover.
Laser nitrogen potential analysis sensor of the present utility model uses laser TDLAS technologies, with laser detection furnace gas gas
Content is to obtain direct nitrogen gesture.Principle of the present utility model is：" laser passes through the light intensity attenuation of tested gas to be based on the primary ratios of youth
That (Lambert-Beer) law：Be tested gas component has absorption to the light of specific wavelength, and absorption intensity is dense in component
Degree is directly proportional ".
The utility model is arranged on nitriding furnace outer wall by mounting seat, and mounting seat turns into by the extension of nitriding furnace burner hearth
There is circulating fan in road, nitriding furnace, the gas in nitriding gas and burner hearth in extension bypass is completely the same and synchronous；Laser is sent out
Emitter modulation is sent to built in transmitting as the specific wavelength needed and laser and the transmitting of frequency while being converted into corresponding signal
Circuit；Laser is installed in the laser pick-off on the extension bypass opposite of nitriding furnace through the extension bypass nitriding gas of nitriding furnace
Device is received, and laser pickoff is received through tested nitriding gas, the laser that light intensity has changed after being absorbed, then and by connecing
Light intensity running parameter before and after built-in circuit, analysis laser absorption is received, by the primary Beer laws computing of youth, corresponding gas is converted into
Body content, then calculates nitrogen gesture by existing " atmosphere content/nitrogen gesture changes mathematical modeling ".
Compared with prior art, the beneficial effects of the utility model are：
Nitrogen gesture is measured using the laser measurement of the original creation different from any other existing technology.
Sensor application of the present utility model TDLAS laser technologies.Using the laser of specific wavelength, have to nitriding furnace gas
There is splendid selectivity and uniqueness, solve the hydrogen sensor of thermal conduction principle due to CO in stove2It is close with hydrogen thermal conductivity rate score
Other with gas, have a strong impact on the detection reliability and precision of hydrogen sensor, or even can not use.
Sensor of the present utility model is a kind of real real-time online nitrogen gesture measurement apparatus.Sharp sensor is installed on body of heater
On, can continuous uninterrupted direct measurement because laser beam is uninterrupted.Laser is designed with protection eyeglass, is not required in nitriding
Gas is directly contacted, and is solved because nitriding furnace gas can condense precipitation ammonium salt and steam, is easily deposited on the narrow and small pipe of HydroNit sensor
Intracavitary and detection original paper surface cause the problem of sensor can not measure nitrogen gesture.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is mounting means schematic diagram of the utility model on nitriding furnace.
In figure：Generating laser 1, laser pickoff 2, transmitting built-in circuit 3-1, receive built-in circuit 3-2, mounting seat 4,
Two block protection eyeglasses 5, two protective covers 6, nitriding furnace 7, circulating fan 8.
Embodiment
With reference to accompanying drawing, the utility model will be further described.
As shown in figure 1, the utility model includes generating laser 1, laser pickoff 2, transmitting built-in circuit 3-1, reception
Built-in circuit 3-2, mounting seat 4, two block protection eyeglasses 5, two protective covers 6, it is characterised in that：Generating laser 1, laser pick-off
Device 2, transmitting built-in circuit 3-1, reception built-in circuit 3-2 are separately mounted in mounting seat 4, transmitting built-in circuit 3-1 and laser
Transmitter 1 is connected, and receives built-in circuit 3-2 and is connected with laser pickoff 2, light path and the laser pickoff 2 of generating laser 1
Light path is installed with respect to nitriding furnace burner hearth side in generating laser and laser pickoff on one and is respectively mounted a block protection eyeglass
5；A protective cover 6 is respectively mounted on generating laser and laser pickoff.Described generating laser 1, laser pickoff 2,
It is existing structure to launch built-in circuit 3-1, receive built-in circuit 3-2 structures.
As shown in Fig. 2 laser nitrogen potential analysis sensor described in the utility model is arranged on nitriding furnace 7 by mounting seat 4
On outer wall, and extension of the mounting seat 4 as the burner hearth of nitriding furnace 7 is bypassed, and has circulating fan 8, oozing in extension bypass in nitriding furnace 7
Gas in nitrogen and burner hearth is completely the same and synchronous；The modulation of generating laser 1 is as the specific wavelength and frequency needed
Laser is simultaneously launched, while being converted into corresponding signal is sent to transmitting built-in circuit 3-1；The extension of laser through nitriding furnace 7 is bypassed
Nitriding gas, the laser pickoff 2 for being installed in the extension bypass opposite of nitriding furnace 7 is received, and laser pickoff 2, which is received, have been passed through
Tested nitriding gas, the laser that light intensity has changed after being absorbed, then and by receiving built-in circuit 3-2, analyzes laser absorption
Front and rear light intensity running parameter, by the primary Beer laws computing of youth, is converted into corresponding gas content, then passes through existing " gas
Atmosphere content/nitrogen gesture conversion mathematical modeling " calculates nitrogen gesture.
Claims (3)
1. laser nitrogen potential analysis sensor, comprising generating laser, laser pickoff, transmitting built-in circuit, receive built-in circuit,
Mounting seat, it is characterised in that：Generating laser, laser pickoff, transmitting built-in circuit, reception built-in circuit are separately mounted to peace
Fill on seat, and transmitting built-in circuit is connected with generating laser, receives built-in circuit and is connected with laser pickoff, generating laser
Light path and laser pickoff light path on one.
2. laser nitrogen potential analysis sensor according to claim 1, it is characterised in that：Also include two block protection eyeglasses,
Generating laser and laser pickoff are installed with respect to nitriding furnace burner hearth side is respectively mounted a block protection eyeglass.
3. laser nitrogen potential analysis sensor according to claim 1, it is characterised in that：Also include two protective covers, swashing
A protective cover is respectively mounted on optical transmitting set and laser pickoff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621341216.5U CN206378417U (en) | 2016-12-08 | 2016-12-08 | Laser nitrogen potential analysis sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621341216.5U CN206378417U (en) | 2016-12-08 | 2016-12-08 | Laser nitrogen potential analysis sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206378417U true CN206378417U (en) | 2017-08-04 |
Family
ID=59406537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621341216.5U Active CN206378417U (en) | 2016-12-08 | 2016-12-08 | Laser nitrogen potential analysis sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN206378417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706560A (en) * | 2016-12-08 | 2017-05-24 | 武汉华敏测控技术股份有限公司 | Laser nitrogen potential analysis sensor and detection method |
-
2016
- 2016-12-08 CN CN201621341216.5U patent/CN206378417U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706560A (en) * | 2016-12-08 | 2017-05-24 | 武汉华敏测控技术股份有限公司 | Laser nitrogen potential analysis sensor and detection method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200714 Address after: No.01-2, 1st floor, building 2, phase III, international enterprise center, No.1 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Huamin Technology Co., Ltd Address before: The East Lake development zone two road 430074 in Hubei province Wuhan City Jinfeng Building International Business Center No. C-202 Patentee before: WUHAN HUAMIN MEASUREMENT & CONTROL TECHNOLOGY Co.,Ltd. |