CN216484587U - Mirror surface absorption cell for spectrometer - Google Patents

Abstract

The utility model provides a mirror surface absorption cell for spectrum appearance, the absorption cell is connected with into light mouth and light-emitting window, it is equipped with light-gathering piece to go into the light mouth, light-gathering piece jets into behind the incident light focus absorption cell absorbs appearance gas, and follows the light-emitting window jets out, just the angularly adjustable of light-gathering piece, the utility model discloses a will the inner wall of absorption cell sets to by a plurality of mirror surfaces the plane links up and constitutes, makes each department of absorption cell inner wall is the total reflection face, and passes through it sets up angularly adjustable to go into the light mouth gather the light piece, make to jet into the optical path of the light in the absorption cell can be based on the regulation of light-gathering piece and change, thereby make the absorption efficiency of light can promote, realizes the promotion to measurement accuracy.

Description

Mirror surface absorption cell for spectrometer

Technical Field

The utility model relates to an analytical instrument technical field especially relates to an optical path scope adjustable absorption cell to in promote the absorption efficiency of light to appearance gas, thereby promote and detect the precision.

Background

When a spectrometer analyzes sample gas, the sample gas to be detected needs to be conveyed to an absorption cell, specific light is emitted to the sample gas in the absorption cell, the sample gas is absorbed by the light, and then the absorbed light carrying the sample gas information is conveyed to a detection unit of the spectrometer through an optical fiber for detection, so that component information in the sample gas is measured.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide an absorption cell with an adjustable optical path range, so as to improve the absorption efficiency of the sample gas by the light, and thus improve the detection accuracy.

The utility model provides a mirror surface absorption cell for spectrum appearance, the absorption cell has the inner wall, the inner wall links up by a plurality of planes and constitutes, all the plane makes for the mirror surface each department of inner wall is the total reflection face, the absorption cell is connected with income light mouth and light-emitting window, it is equipped with the spotlight piece of angularly adjustable to go into the light mouth, the spotlight piece jets into with the focus back of incidenting the absorption cell absorbs the sample gas, and follows the light-emitting window jets out, through adjusting the angle of spotlight piece is in order to change light is in optical path in the absorption cell.

Furthermore, the absorption tank is made of metal, and the inner wall of the absorption tank is formed by connecting at least six planes.

Furthermore, six planes are connected to form a regular hexahedron on the inner wall of the absorption tank.

Furthermore, the outer wall of the absorption tank is of a cuboid structure or a cube structure.

Further, the flat surface is coated with a mirror coating.

Further, the light gathering part is one of a spherical lens, a biconvex lens or a plano-convex lens, the light outlet is provided with a light transmitting part, and the light transmitting part is one of a plane mirror, a biconvex lens or a plano-convex lens.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a will the inner wall of absorption cell sets to by a plurality of for the mirror surface the plane links up to constitute, makes each department of absorption cell inner wall is the total reflection face, and passes through it sets up the adjustable of angle to go into the light mouth gather the light piece, make and jet into the optical path of the light in the absorption cell can be based on gather the regulation of light piece and change, thereby make the absorption efficiency of light can promote, realizes the promotion to measurement accuracy.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment 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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-3, the present invention provides a mirror absorption cell 100 for a spectrometer, wherein the absorption cell 100 comprises a first portion 10 and a second portion 20, and the first portion 10 and the second portion 20 are detachably fastened together to form the absorption cell 100.

The absorption tank 100 is made of metal, and the metal can be stainless steel or aluminum alloy, so that the absorption tank 100 has good deformation resistance.

Specifically, in an embodiment provided by the present invention, the first portion 10 and the second portion 20 of the absorption tank 100 are made by directly cutting the aluminum plate after annealing treatment, so that the absorption tank 100 can be applied to a worse working environment.

The outer wall of the absorption tank 100 is of a cuboid structure or a square structure, so that the absorption tank 100 is convenient to install and fix.

The absorption cell 100 has an inner wall formed by joining a plurality of planes 30, and all the planes 30 are mirror surfaces so that each position of the inner wall is a total reflection surface.

The inner wall of the absorption cell 100 is formed by connecting at least six planes 30, so that the absorption cell 100 can perform total reflection for multiple times, and the optical path of light of the absorbed sample gas can be conveniently adjusted.

The utility model provides a pair of in the embodiment, the inner wall of absorption tank 100 is by six plane 30 links up and constitutes regular hexahedron, makes absorption tank 100 overall structure is more stable.

The plane 30 is further coated with a mirror coating (not shown), the coating is a metal plating or a teflon plating, and the metal plating is a mirror aluminum plating, a mirror silver plating or a mirror gold plating, so that the plane 30 can better perform total reflection, and the reflection efficiency of the plane 30 is higher.

Simultaneously the mirror coating of plane 30 coating also is convenient for the operator to right the inner wall carries out quick cleanness to can effectually prevent that the impurity that the appearance gas carried from attaching to influence on the inner wall absorption cell 100's reflection efficiency, thereby influence absorption cell 100's response speed and detection precision.

The absorption cell 100 communicates between the permeate inlet 50 and the gas outlet 60. The gas inlet 50 is used for conveying sample gas to be detected into the absorption cell 100, and the gas outlet 60 is used for discharging the absorbed sample gas.

The absorption cell 100 is further connected with a light inlet 70 and a light outlet 80. The light inlet 70 is connected to a light source generating device (not shown) through an optical fiber, and is used for injecting light emitted from the light source generating device into the absorption cell 100. The light outlet 80 is connected to a detection device (not shown) through an optical fiber, and is configured to transmit the light absorbed by the sample gas to the detection device for detection.

Specifically, the light inlet 70 is provided with a first optical fiber connector 71, a light collecting member 72, and a first sealing ring 73. The light inlet 70 is a through hole communicating with the absorption cell 100, and the light inlet 70 has a first step surface 74. The first sealing ring 73 is abutted against the first step surface 74, the first optical fiber connector 71 is installed at the light inlet 70 and is opposite to the first sealing ring 73, and the angle of the light gathering piece 72 is limited between the first sealing ring 73 and the first optical fiber connector 71.

The first optical fiber connector 71 is connected with the light source generating device through an optical fiber, so that light emitted by the light source generating device is focused by the light gathering member 72 and then enters the absorption cell 100.

The light outlet 80 is provided with a second optical fiber connector 81, a light-transmitting member 82, and a second sealing ring 83. The light outlet 80 is a through hole communicated with the absorption cell 100, and the light outlet 80 has a second step surface 84. The second sealing ring 83 is abutted against the second step surface 84, the second optical fiber connector 81 is installed at the light outlet 80 and is opposite to the second sealing ring 83, and the angle of the light-transmitting member 82 is limited between the second sealing ring 83 and the second optical fiber connector 81.

The second optical fiber connector 81 is connected to the detection device through an optical fiber, so that the light absorbed with the sample gas is transmitted to the detection device through the optical fiber through the light-transmitting member 82 for detection.

Specifically, by adjusting the deflection angle of the light-gathering member 72, the direction of the light entering the absorption cell 100 is changed, so that the light is reflected in the absorption cell 100 for multiple times and finally exits from the light exit 80.

Due to the angle adjustment of the light-gathering member 72, the number of times of reflection of the light on the plane 30 in the absorption cell 100 is changed, so that the optical path of the light in the absorption cell 100 is adjusted, and the absorption cell 100 can perform measurement on sample gases with different concentrations.

It should be noted that: the light gathering member 72 is one of a spherical lens, a biconvex lens or a plano-convex lens; the light-transmitting member 82 is one of a plane mirror, a biconvex lens, or a plano-convex lens.

The use method is as follows: the sample gas to be detected is conveyed into the absorption cell 100 through the gas inlet 50, the light used for absorbing the sample gas is emitted into the absorption cell 100 through the light inlet 70, the light path adjustment of the light is realized by adjusting the angle of the light gathering piece 72 arranged at the light inlet 70, so that the light absorbing the sample gas finally penetrates through the light transmitting piece 82 and is transmitted to the detection device through the optical fiber for detection, and the light absorbing sample gas is discharged from the gas outlet 60.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims (6)

1. The mirror surface absorption cell for the spectrometer is characterized in that the absorption cell is provided with an inner wall, the inner wall is formed by connecting a plurality of planes, all the planes are mirror surfaces, each position of the inner wall is a total reflection surface, the absorption cell is connected with a light inlet and a light outlet, the light inlet is provided with a light gathering piece with an adjustable angle, the light gathering piece focuses incident light and then emits the light into the absorption cell to absorb sample gas, the light is emitted from the light outlet, and the light path of the light in the absorption cell is changed by adjusting the angle of the light gathering piece.

2. The specular absorption cell for spectrometer of claim 1, wherein the absorption cell is made of metal, and the inner wall of the absorption cell is formed by joining at least six of the planes.

3. The specular absorption cell for spectrometer of claim 2, wherein the inner wall of the absorption cell is a regular hexahedron formed by joining six of the planes.

4. The mirror absorption cell for spectrometer as claimed in claim 1, wherein the outer wall of the absorption cell is a rectangular parallelepiped structure or a cube structure.

5. The specular absorption cell for spectrometer of claim 1, wherein the flat surface is coated with a specular coating.

6. The specular absorption cell of claim 1, wherein the light-collecting element is one of a spherical lens, a biconvex lens and a plano-convex lens, the light outlet is provided with a light-transmitting element, and the light-transmitting element is one of a plane mirror, a biconvex lens and a plano-convex lens.

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