Device for detecting flue gas in flue

The invention discloses a device for detecting flue gas in a flue. The device comprises a first pipe body and a second pipe body, which are arranged on two opposite side walls of the flue (A) and are sequentially arranged along a same light beam path; the light beam path is crossed with a flowing path of the flue gas in the flue (A); light transmission sheets, which are used for separating inner cavities of the first pipe body and the second pipe body from an external environment, are arranged at the parts, positioned at the periphery of the flue (A), of the first pipe body and the second pipe body; a laser transmitting assembly and a laser receiving assembly are arranged outside the two light transmission sheets, respectively; gas nozzles, which are used for spraying gas curtains to prevent dust in the flue gas from entering the pipe cavities of the first pipe body and the second pipe body, are arranged at pipe end orifices, extending into the flue (A), of the first pipe body and the second ...

Method for establishing moisture interference resistant model for hemoglobin based on near infrared spectrum technology

The invention discloses a method for establishing a moisture interference resistant model for hemoglobin based on a near infrared spectrum technology, and relates to the field of near infrared spectrum and medical treatment. The method comprises the following steps: (1) preparing experimental materials; (2) collecting a sample spectrum; (3) spectrum pretreatment; (4) selecting a moisture characteristic wave band; (5) removing moisture characteristic wave bands; (6) selecting a hemoglobin characteristic wave band; and (7) establishing a hemoglobin content prediction model. The method has the beneficial effects that aiming at the characteristics of strong absorption, wide wave band and the like of moisture during NIRS analysis, a variable selection algorithm is reasonably applied, and the moisture content is used as a measured component of the model to establish the model. According to the method, the moisture characteristic wave bands are screened out from the full wave bands and then are ...

Reflective type solar infrared radioactive dynamic optical path tracking system

The invention relates to a reflective type solar infrared radioactive dynamic optical path tracking system comprising a receiving unit, a receiving reflecting mirror which is coordinated with the receiving unit, and also an electronic controlling rotary table which is slantingly provided with an azimuth angle reflecting mirror corresponding to a horizontal line; a circular hole is arranged on theazimuth angle reflecting mirror; a PSD four-quadrant detector and a PSD reflecting mirror which is coordinated with the PSD four-quadrant detector are arranged on the electronic controlling rotary table at one side of the azimuth angle reflecting mirror; the PSD reflecting mirror is located near the circular hole on the azimuth angle reflecting mirror and the reflecting surface thereof faces the PSD four-quadrant detector; a rotatable height angle reflecting mirror is arranged on the electronic controlling rotary table at one side of the reflecting surface of the azimuth angle reflecting mirror; ...

System and method for measuring chemical fertilizer volatile gas

The invention discloses a system for measuring fertilizer volatile gases and a method thereof. A fertilizer is positioned in a closed box which is connected with a vacuum pump through an air tube, and the other end of the vacuum pump is connected with a multiple-reflection cell of a Fourier transform infrared spectrometer through the air tube. A computer controls the vacuum pump to draw fertilizer volatile gases in the closed box into the multiple-reflection cell, the Fourier transform infrared spectrometer measures infrared spectra of various gases, and the computer implements the quantitative and qualitative analysis to the measured gases. The occurrence of the Fourier transform infrared spectrometer improves the precision of gas quantitative and qualitative measurement, thereby realizing the non-destructive and multi-component measurement to volatile gases and providing a measuring means for volatile gases of fertilizer. The system has advantages of simple structure and convenience, ...

Sulfur hexafluoride gas component analyzer

The invention discloses a sulfur hexafluoride gas component analyzer, comprising an atmosphere chamber, a power supply and a circuit control board, wherein an infrared light source and a light path output window are arranged on the left side wall of the atmosphere chamber, and an atmosphere chamber air inlet and an atmosphere chamber air outlet are formed in the rear wall of the atmosphere chamber; a helium neon light source, a first reflector and a second reflector are arranged on the left side of the outer part of the atmosphere chamber; an interferometer and a sensor are arranged in the atmosphere chamber; the interferometer comprises a third reflector, a fourth reflector, a beam splitter, an infrared total reflection mirror, a laser detector, a fifth reflector, a small air chamber and an infrared detector; the power supply provides power to the structures; the circuit control board controls the operation of the infrared light source, the helium neon light source, the small air chamber ...

Double-beam Fourier infrared interferometer and spectrometer based on double-axis scanning

The invention provides a double-beam Fourier infrared interferometer based on double-axis scanning. The double-beam Fourier infrared interferometer comprises a parallelogram frame body capable of deforming and automatically resetting; the first edge of the frame body is a fixed edge, and the other three edges are movable edges; and a beam splitter is fixed on the first side. A first swing arm and a second swing arm extend out of the second edge and the third edge respectively, and a first turn-back device and a second turn-back device are fixed to the end of the first swing arm and the end of the second swing arm respectively. The motion of the parallelogram frame body is adopted to drive the two angle mirrors to move synchronously, and the two swing arms can move at the same angular velocity, so that the optical axis of the interferometer does not change in the scanning process. The included angles between the two swing arms and the light beam are complementary, the optical path difference ...

Method and device for adjusting optical axis parallelism of transmitting and a receiving optical system of dual-axis laser ceilometer

The invention discloses a method and a device for adjusting the optical axis parallelism of a transmitting and receiving optical system of a dual-axis laser ceilometer. The method is characterized in that a transmitting telescope and a receiving telescope are fixed on the same plate, the transmitting telescope can be adjusted in the horizontal direction, the receiving telescope can be adjusted in the pitching direction, a CCD detection module is installed at the position of the transmitting telescope, another CCD detection module is installed at the position of the receiving telescope, a visible light source target is placed in an area where an overlap factor is 1 in front of a transmitting and receiving optical path, view field images detected by the two CCD detection modules are inputted to a computer, the position of the target in the view field image is determined, a view field image of the transmitting and receiving optical path is observed on the computer, and the target is enabled ...

Control system for blowing of copper converter

The invention discloses a control system for the blowing of a copper converter. The control system comprises a slag forming endpoint detection unit, a copper forming endpoint detection unit and a data processing unit, wherein the slag forming endpoint detection unit is used for acquiring characteristic spectrum emission intensity signals of PbO and PbS in melt in the copper converter on line in a slag forming period; the copper forming endpoint detection unit is used for acquiring a concentration signal of SO2 in the flue gas of the copper converter on line in a copper forming period; the data processing unit is used for performing analytical processing to judge whether the signals acquired by the slag forming endpoint detection unit and the copper forming endpoint detection unit reach slag and copper forming endpoints or not and whether to stop blowing or not. According to the control system, the slag and copper forming endpoints in a blowing process of the copper converter can be accurately ...

Method for correcting wave number drift of Fourier transform infrared spectrometer

The invention relates to a method for correcting the wave number drift of a Fourier transform infrared spectrometer. The method comprises the following steps: firstly, by using the characteristic that a gas pool injected with CO with a volume concentration of c and a balance gas is remarkable in infrared absorption and is not saturated, figuring out a wave number corresponding to a maximal absorbance theoretical value of CO, then actually measuring the transmittance spectrum of an absorption characteristic of the CO by using a to-be-corrected Fourier transform infrared spectrometer, finding out a wave number corresponding to minimum value of the transmittance spectrum in the transmittance spectrum, and then correcting a sampling interval of the to-be-corrected Fourier transform infrared spectrometer by using an absolute value of a difference between the wave number corresponding to the maximal absorbance theoretical value of the CO and the wave number corresponding to a minimum transmittance ...

Infrared radiation light source system

The invention discloses an infrared radiation light source system, which is characterized in that the infrared radiation light source system is provided with a Cassegrain telescope comprising a main mirror (3) of a parabolic mirror and a hyperboloid secondary mirror (4); a subsequent light path of the Cassegrain telescope is provided with a concave reflector (1) and a globar (2) sequentially; theglobar (2) serving as an infrared light source of the system is positioned at a focus of the Cassegrain telescope and in the spherical center of the concave reflector (1); the luminous point of the globar (2), the central point of the concave reflector (1) and the central points of the main mirror and the secondary mirror of the telescope are coaxial; the globar (2) is of an n shape; the middle part is hollowed-out; one part of radiation light of the globar passes through a notch of the main mirror (3), is reflected to the main mirror (3) by the secondary mirror (4) and then reflected out to form ...

Method and device for preparing arsenic trioxide gas with standard concentration

The invention relates to a method for preparing arsenic trioxide gas with standard concentration. The method comprises the following steps: (1) selecting a three-section type sample reservoir, wherein the sample reservoir is provided with a first cavity, a second cavity and a third cavity which are sequentially arranged in a line, and windows capable of transmitting an infrared spectrum signal are arranged between two ends of the sample reservoir, between the first cavity and the second cavity, and between the second cavity and the third cavity; and (2) vacuumizing the three cavities of the sample reservoir, adding nitrogen and arsenic trioxide in the second cavity and sealing the three cavities, then integrally heating the sample reservoir until arsenic trioxide in the second cavity is completely gasified, wherein the adding amounts of the nitrogen and the arsenic trioxide in the second cavity are met, after the arsenic trioxide is completely gasified, the pressure intensity in the second ...

Refraction rotation scanning interferometer

The invention discloses a refraction rotation scanning interferometer which comprises a beam splitter, a refraction window piece, a planar reflecting mirror I, a planar reflecting mirror II, a paraboloidal mirror I, a paraboloidal mirror II, a corner reflecting mirror I, and a corner reflecting mirror II, wherein a light source is arranged on the focus of the paraboloidal mirror I; an optical probing system is arranged on the focus of the paraboloidal mirror II; the beam splitter splits the light beam from the light source into two parts, namely a transmission light beam and a reflection light beam; the refraction window piece is driven to rotate at high speed by a motor connected in the center of the refraction window piece; the transmission light beam and the reflection light beam pass through the refraction window piece on respective light paths, and are returned to the beam splitter with a certain optical path difference, the interference occurs, the paraboloidal mirror II receives ...

Light path system of interferometer

The invention discloses an interferometer light path system. The position, in which a light source is arranged, is just on the focal plane of a parabolic mirror (1); the light emitted from the light source is changed to parallel light via the parabolic mirror (1) and then emits to a light beam splitter (2) of the interferometer; and the parallel light emitted from the interferometer is reflected onto a parabolic mirror (4) via a plane mirror (3), and further reflected via parabolic mirrors (5 and 6) onto a detector. The parabolic mirrors (1, 4, 5 and 6) have the same parabolic equations, thatis, the parabolic mirrors have the same focuses. The distance between the parabolic mirrors (4 and 5) are just twice of the focal length, so that the light beam passing through the parabolic mirror (4) can be converged in the position between the parabolic mirrors (4 and 5), that is, the center of the two focal planes thereof. The center is the position in which a sample is measured, the position, in ...

Leading-in optical device of copper smelting process emission spectrum analysis system

The invention relates to the field of optical system design, in particular to a leading-in optical device of a copper smelting process emission spectrum analysis system. The leading-in optical device comprises a lens, a plane mirror and a reflector, wherein the lens, the plane mirror and the reflector are arranged in a lens cone, the lens is arranged at the front section position of the lens cone or the middle section position of the lens cone, light rays enter the lens cone from the front end of the lens cone, the plane mirror is arranged at the rear end of the lens cone, the light rays gathered through the lens are reflected by the plane mirror to one side of the lens, the reflector which is arranged adjacent to the side, close to the plane mirror, of the lens or arranged adjacent to the periphery of the lens is used for receiving the light rays reflected by the plane mirror, and a through hole is formed in the position, corresponding to the reflector, of the wall of the lens cone and ...

Method and application of immobilized glucoamylase by using sodium alginate silicon dioxide hybridized gel

The invention belongs to the technical field of immobilized enzymes, and in particular relates to a method of immobilized glucoamylase by using sodium alginate silicon dioxide hybridized gel, and a method for saccharifying the obtained immobilized glucoamylase to produce glucose. According to the method, the sodium alginate silicon dioxide hybridized gel is adopted to embed a saccharified enzyme so as to immobilize the enzyme, by virtue of most appropriate proportioning of silicon dioxide and sodium alginate, the defects that in a conventional embedding method, a substrate is not easy to contact with the enzyme, or enzyme molecules are easy to drop off, and the like, are overcome, the immobilization cost of the saccharified enzyme is lowered, the stability of the saccharified enzyme which is immobilized by using the embedding method is improved, and the production pollution is reduced. In addition, due to design of immobilized saccharified enzyme hydrolysis starch reaction equipment, functions ...

Mass sensor based on elastic mass system and method for measuring mass thereof

Infrared multi-constituent monitoring method of emission flux of gas in pollution source

The invention discloses an infrared multi-constituent monitoring method and a monitoring system for monitoring emission flux of gas in pollution sources, which is characterized in that the monitoring system comprises a movable platform which is provided with a solar tracker, an infrared spectrometer, a computer and a GPS localizer; The monitoring method comprises the following steps: taking the sun as a light source, which penetrates the polluted gas and is absorbed selectively by the gas molecule; guilding the sunlight into the infrared spectrometer by the solar tracker and measuring the solar spectrum; analyzing and calculating the column concentration of the pollutant molecule by a software; moving the movable platform and measuring the column concentrates of different positions; measuring the distances of different points by the GPS localizer; furthermore, and obtaining the emission flux of the pollution gas in the whole measurement area by the calculation of the software by combining ...

System and method for measuring chemical fertilizer volatile gas

The invention discloses a system for measuring fertilizer volatile gases and a method thereof. A fertilizer is positioned in a closed box which is connected with a vacuum pump through an air tube, and the other end of the vacuum pump is connected with a multiple-reflection cell of a Fourier transform infrared spectrometer through the air tube. A computer controls the vacuum pump to draw fertilizer volatile gases in the closed box into the multiple-reflection cell, the Fourier transform infrared spectrometer measures infrared spectra of various gases, and the computer implements the quantitative and qualitative analysis to the measured gases. The occurrence of the Fourier transform infrared spectrometer improves the precision of gas quantitative and qualitative measurement, thereby realizing the non-destructive and multi-component measurement to volatile gases and providing a measuring means for volatile gases of fertilizer. The system has advantages of simple structure and convenience, ...

Copper converter converting control system

The invention discloses a copper converter converting control system which comprises a slag forming end point detection unit and a copper forming end point detection unit, wherein the slag forming end point detection unit is used for online collecting characteristic spectrum emission intensity signals of PbO and PbS of the melt in a copper converter in the slag forming period; the copper forming end point detection unit is used for online collecting gas concentration signals of SO2 in flue gas in a copper converter gas duct A in the copper smelting period; a data processing unit is used for analyzing and processing the signals collected by the slag forming end point detection unit and the copper forming end point detection unit to judge whether the converting reaches the slag forming end point and the copper forming end point, and performs regulation and control to determine whether the blowing out is performed. The control system can accurately judge the slag forming end point and the ...

AR model parameter estimation method and device based on forward and backward linear prediction

The invention discloses an AR model parameter estimation method and device based on forward and backward linear prediction, and the method comprises the steps: obtaining an interference signal of an infrared spectrometer, and converting the interference signal into a matrix form, thereby completing the construction of an AR model; constructing a forward-backward expansion matrix of the interference signal by using a forward-backward prediction total least square method, and forming a forward-backward linear prediction equation based on the forward-backward expansion matrix; the noise disturbance influence of an observation vector and a data matrix is considered, the forward and backward order expansion matrix is converted into a homogeneous linear equation, and the total least square problem of the homogeneous linear equation is constructed; solving the solution of the total least square problem by using a singular value decomposition method, and obtaining a parameter coefficient of the ...

Infrared multi-constituent monitoring method and monitoring system for monitoring emission flux of gas in pollution source

The invention discloses an infrared multi-constituent monitoring method and a monitoring system for monitoring emission flux of gas in pollution sources, which is characterized in that the monitoring system comprises a movable platform which is provided with a solar tracker, an infrared spectrometer, a computer and a GPS localizer; The monitoring method comprises the following steps: taking the sun as a light source, which penetrates the polluted gas and is absorbed selectively by the gas molecule; guilding the sunlight into the infrared spectrometer by the solar tracker and measuring the solar spectrum; analyzing and calculating the column concentration of the pollutant molecule by a software; moving the movable platform and measuring the column concentrates of different positions; measuring the distances of different points by the GPS localizer; furthermore, and obtaining the emission flux of the pollution gas in the whole measurement area by the calculation of the software by combining ...

Light path system of interferometer

The invention discloses an interferometer light path system. The position, in which a light source is arranged, is just on the focal plane of a parabolic mirror (1); the light emitted from the light source is changed to parallel light via the parabolic mirror (1) and then emits to a light beam splitter (2) of the interferometer; and the parallel light emitted from the interferometer is reflected onto a parabolic mirror (4) via a plane mirror (3), and further reflected via parabolic mirrors (5 and 6) onto a detector. The parabolic mirrors (1, 4, 5 and 6) have the same parabolic equations, that is, the parabolic mirrors have the same focuses. The distance between the parabolic mirrors (4 and 5) are just twice of the focal length, so that the light beam passing through the parabolic mirror (4) can be converged in the position between the parabolic mirrors (4 and 5), that is, the center of the two focal planes thereof. The center is the position in which a sample is measured, the position, ...

Infrared radiation light source system

The invention discloses an infrared radiation light source system, which is characterized in that the infrared radiation light source system is provided with a Cassegrain telescope comprising a main mirror (3) of a parabolic mirror and a hyperboloid secondary mirror (4); a subsequent light path of the Cassegrain telescope is provided with a concave reflector (1) and a globar (2) sequentially; the globar (2) serving as an infrared light source of the system is positioned at a focus of the Cassegrain telescope and in the spherical center of the concave reflector (1); the luminous point of the globar (2), the central point of the concave reflector (1) and the central points of the main mirror and the secondary mirror of the telescope are coaxial; the globar (2) is of an n shape; the middle part is hollowed-out; one part of radiation light of the globar passes through a notch of the main mirror (3), is reflected to the main mirror (3) by the secondary mirror (4) and then reflected out to form ...

Laser in-situ detection system for oxygen concentration in arsenic-bearing gold concentrate roasting furnace

The invention discloses a laser in-situ detection system for oxygen concentration in an arsenic-bearing gold concentrate roasting furnace. The system mainly comprises a semiconductor laser, a temperature and current controller for driving the semiconductor laser, a signal generator for generating driving signals, an optical probe for receiving and converting laser beams, a sensor for collecting the temperature and pressure inside the roasting furnace, a data acquisition module for receiving and collecting photoelectric, temperature and pressure signals and an upper computer for computing and detecting the oxygen concentration. The system overcomes the background radiation interference in a combustion environment through the steps of background radiation filtering, baseline correction, absorbance Voigt linear fitting, correction computation of oxygen spectral lines, oxygen concentration computation and inversion and the like, and realizes real-time accurate detection of the oxygen concentration ...

Reflective type solar infrared radioactive dynamic optical path tracking system

The invention relates to a reflective type solar infrared radioactive dynamic optical path tracking system comprising a receiving unit, a receiving reflecting mirror which is coordinated with the receiving unit, and also an electronic controlling rotary table which is slantingly provided with an azimuth angle reflecting mirror corresponding to a horizontal line; a circular hole is arranged on theazimuth angle reflecting mirror; a PSD four-quadrant detector and a PSD reflecting mirror which is coordinated with the PSD four-quadrant detector are arranged on the electronic controlling rotary table at one side of the azimuth angle reflecting mirror; the PSD reflecting mirror is located near the circular hole on the azimuth angle reflecting mirror and the reflecting surface thereof faces the PSD four-quadrant detector; a rotatable height angle reflecting mirror is arranged on the electronic controlling rotary table at one side of the reflecting surface of the azimuth angle reflecting mirror; ...