CN220356926U - Multiple reflection laser gas detection chamber - Google Patents

Abstract

The utility model discloses a multi-reflection laser gas detection chamber which comprises a gas chamber body, a laser component, a first lens component, a second lens component, a first reflecting mirror component, a second reflecting mirror component, a third reflecting mirror component and a detector component, wherein the laser component and the detector component are arranged on one end face in the gas chamber body, the first lens component, the second lens component, the first reflecting mirror component, the second reflecting mirror component and the third reflecting mirror component are all arranged in the gas chamber body, and light rays emitted by the laser component pass through the first lens component, the first reflecting mirror component, the second reflecting mirror component and the third reflecting mirror component in sequence and then are gathered in the detector component through the second lens component after being reflected by the first reflecting mirror component, the second reflecting mirror component and the third reflecting mirror component. The utility model has the beneficial effects that: a set of repeated turn-back light path is designed in the small-volume air chamber, the light path is simple and convenient to adjust, repeated turn-back of the light path is realized, the absorption intensity of gas is increased, and the detection precision of the laser gas detection device is improved.

Description

Multiple reflection laser gas detection chamber

Technical Field

The utility model relates to the technical field of laser gas sensing, in particular to a multi-reflection laser gas detection chamber.

Background

The light intensity decay of laser passing through the gas to be measured follows Lambert-Beer law, i.e. the component to be measured has an absorption effect on light of a specific wavelength, and the absorption intensity is proportional to the component concentration and the length of the gas absorption, and the gas concentration is measured by measuring the decay of the gas to the laser.

The laser gas detection device comprises a detection device main body, wherein a placement box is fixedly arranged on the outer surface of the upper end of the detection device main body, a data connecting wire is arranged in the placement box, an upper cover is arranged on the outer surface of the upper end of the placement box, and an elastic sheet is fixedly arranged on the outer surface of the upper end of one side of the detection device main body. The laser gas detection device is provided with the mounting groove, the telescopic rod, the placement box, the data connecting wire and the anti-drop buckle, so that people can conveniently adjust the height of the detection device main body, gas can be detected in a certain safety range, people can conveniently store and use the data connecting wire, the laser gas detection device can be connected with a computer at any time, data can be conveniently transmitted and observed, and the situation that people drop due to loosening of the buckle when placing the laser gas detection device can be ensured, so that a better application prospect is brought.

For example, china patent discloses a laser gas detection device (application number: CN 202221013490.5), which comprises a protective shell, a rotating structure and a protective structure, wherein the rotating structure is arranged in the protective shell, and the protective structure is arranged in the protective shell. The staff starts the motor and drives main gear and rotate, can drive the rack frame and control when main gear rotates and remove, can drive the supporting shoe and remove when two rack frames move, can drive two apron one and move to the left right when the supporting shoe moves, make two apron slide in the inside of first slide rail simultaneously to the supporting shoe slides in the inside of second slide rail, and then can play the effect of supporting to the apron is whole, further starts electric putter and drives movable box up-and-down motion, makes movable box come out from the inside of protective housing, and then can protect it when need not use laser gas detection device, has avoided causing the damage when detecting device to laser gas.

When the prior art adopts the laser gas absorption spectrum technology to measure, the measurement precision of the instrument is in direct proportion to the length of an absorption optical path, and for a gas chamber with small volume, the single optical path transmits less absorbed gas, which is unfavorable for gas detection.

Therefore, for the above problems, it is necessary to provide a multiple reflection laser gas detection chamber, which can realize multiple reflection of laser light and increase the gas absorption optical path, thereby improving the detection accuracy of the instrument.

Disclosure of Invention

In view of the foregoing deficiencies in the prior art, an object of the present utility model is to provide a multiple reflection laser gas detection chamber to solve the foregoing problems.

The utility model provides a gaseous room of multiple reflection laser, includes gas chamber, laser instrument subassembly, first lens subassembly, second lens subassembly, first mirror subassembly, second mirror subassembly, third mirror subassembly, detector assembly, laser instrument subassembly and detector assembly are installed at the inside terminal surface of gas chamber, first lens subassembly, second lens subassembly, first mirror subassembly, second mirror subassembly, third mirror subassembly are all installed in the inside of gas chamber, the light that the laser instrument subassembly sent passes first lens subassembly and passes first mirror subassembly, second mirror subassembly, third mirror subassembly reflection back and pass second lens subassembly gathering in the detector assembly in proper order.

Preferably, the second mirror assembly is mounted at one end face inside the gas cell, and the first and third mirror assemblies are mounted at the other end face inside the gas cell.

Preferably, the upper part of the gas chamber is provided with a cover plate.

Preferably, an air inlet hole and an air outlet hole are formed in one side face of the air chamber.

Preferably, the bottom of the gas chamber is provided with a number of support plates.

Preferably, the first mirror assembly includes a first mirror and a first pivot plate, the first mirror is mounted on the first pivot plate, the second mirror assembly includes a second mirror and a second pivot plate, the second mirror is mounted on the second pivot plate, the third mirror assembly includes a third mirror and a third pivot plate, and the third mirror is mounted on the third pivot plate.

Preferably, the first rotating shaft plate, the second rotating shaft plate and the third rotating shaft plate are all provided with rotating motors.

Compared with the prior art, the utility model has the beneficial effects that: the first lens component is arranged, so that light rays emitted by the laser component can be changed into parallel light with weak penetrating power; the first reflecting mirror component, the second reflecting mirror component and the third reflecting mirror component are arranged, so that the light path can be folded repeatedly, and the absorption intensity of gas is increased; light can be concentrated in the detector assembly through setting up the second lens subassembly, and the setting of all spare parts all is favorable to improving laser gas detection device's detection precision.

Drawings

FIG. 1 is a block diagram of a multiple reflection laser gas detection chamber provided by the present utility model;

FIG. 2 is a diagram of the internal deployment state of the present utility model;

FIG. 3 is a schematic diagram of the present utility model;

FIG. 4 is a block diagram of a first mirror assembly of the present utility model;

FIG. 5 is a block diagram of a second mirror assembly of the present utility model;

fig. 6 is a block diagram of a third mirror assembly of the present utility model.

Reference numerals in the drawings: 1. a gas chamber; 101. a cover plate; 102. an air inlet hole; 103. an air outlet hole; 104. a support plate; 2. a laser assembly; 3. a first lens assembly; 4. a second lens assembly; 5. a first mirror assembly; 501. a first mirror; 502. a first rotating shaft plate; 6. a second mirror assembly; 601. a second mirror; 602. a second rotation shaft plate; 7. a third mirror assembly; 701. a third mirror; 702. a third rotation shaft plate; 8. a detector assembly.

Description of the embodiments

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

As shown in fig. 1 and fig. 2 to 6, the multi-reflection laser gas detection chamber comprises a gas chamber 1, a laser assembly 2, a first lens assembly 3, a second lens assembly 4, a first reflecting mirror assembly 5, a second reflecting mirror assembly 6, a third reflecting mirror assembly 7 and a detector assembly 8, wherein the laser assembly 2 and the detector assembly 8 are arranged on one end face inside the gas chamber 1, the first lens assembly 3, the second lens assembly 4, the first reflecting mirror assembly 5, the second reflecting mirror assembly 6 and the third reflecting mirror assembly 7 are arranged inside the gas chamber 1, and light rays emitted by the laser assembly 2 pass through the first lens assembly 3, sequentially pass through the first reflecting mirror assembly 5, the second reflecting mirror assembly 6 and the third reflecting mirror assembly 7, then pass through the second lens assembly 4 and are concentrated in the detector assembly 8.

Further, the second mirror assembly 6 is mounted at one end face inside the gas chamber 1, and the first mirror assembly 5 and the third mirror assembly 7 are mounted at the other end face inside the gas chamber 1.

Further, a cover plate 101 is provided at the upper portion of the gas chamber 1.

Further, an air inlet hole 102 and an air outlet hole 103 are arranged on one side surface of the air chamber 1.

Further, a plurality of support plates 104 are provided at the bottom of the gas chamber 1.

Further, the first mirror assembly 5 includes a first mirror 501 and a first pivot plate 502, the first mirror 501 is mounted on the first pivot plate 502, the second mirror assembly 6 includes a second mirror 601 and a second pivot plate 602, the second mirror 601 is mounted on the second pivot plate 602, the third mirror assembly 7 includes a third mirror 701 and a third pivot plate 702, and the third mirror 701 is mounted on the third pivot plate 702.

Further, the first rotating shaft plate 502, the second rotating shaft plate 602, and the third rotating shaft plate 702 are all provided with a rotating motor 9.

Compared with the prior art, the utility model has the beneficial effects that: the utility model can change the light rays emitted by the laser component 2 into parallel light with weak penetrating power by arranging the first lens component 3; multiple foldback of the light path can be realized by arranging the first reflecting mirror assembly 5, the second reflecting mirror assembly 6 and the third reflecting mirror assembly 7, so that the absorption intensity of gas is increased; by arranging the second lens assembly 4, light can be collected in the detector assembly 8, and the arrangement of all parts is beneficial to improving the detection precision of the laser gas detection device.

Working principle: the laser assembly 2 emits light, which is parallel to the first mirror 501 by the first lens assembly 3, reflects the light onto the second mirror 601 by rotating the first rotation plate 502, reflects the light onto the third mirror 701 by rotating the second rotation plate 602, then reflects the light onto the second lens assembly 4 by rotating the third rotation plate 702, and finally focuses the light into the detector assembly 8 by the second lens assembly (4).

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.

Claims (7)

1. A multiple reflection laser gas detection chamber, characterized in that: including gas chamber (1), laser instrument subassembly (2), first lens subassembly (3), second lens subassembly (4), first mirror subassembly (5), second mirror subassembly (6), third mirror subassembly (7), detector subassembly (8), laser instrument subassembly (2) and detector subassembly (8) are installed at the inside terminal surface of gas chamber (1), first lens subassembly (3), second lens subassembly (4), first mirror subassembly (5), second mirror subassembly (6), third mirror subassembly (7) are all installed in the inside of gas chamber (1), the light that laser instrument subassembly (2) sent passes first lens subassembly (3) and passes first mirror subassembly (5), second mirror subassembly (6), third mirror subassembly (7) reflection back and pass second lens subassembly (4) and gather in detector subassembly (8).

2. A multiple reflection laser gas detection cell as defined in claim 1, wherein: the second reflecting mirror assembly (6) is arranged at one end face inside the gas chamber (1), and the first reflecting mirror assembly (5) and the third reflecting mirror assembly (7) are arranged at the other end face inside the gas chamber (1).

3. A multiple reflection laser gas detection cell as defined in claim 1, wherein: a cover plate (101) is arranged at the upper part of the gas chamber (1).

4. A multiple reflection laser gas detection cell as defined in claim 1, wherein: an air inlet hole (102) and an air outlet hole (103) are formed in one side face of the air chamber (1).

5. A multiple reflection laser gas detection cell as defined in claim 1, wherein: the bottom of the gas chamber (1) is provided with a plurality of support plates (104).

6. A multiple reflection laser gas detection cell as defined in claim 1, wherein: the first reflecting mirror assembly (5) comprises a first reflecting mirror (501) and a first rotating shaft plate (502), the first reflecting mirror (501) is installed on the first rotating shaft plate (502), the second reflecting mirror assembly (6) comprises a second reflecting mirror (601) and a second rotating shaft plate (602), the second reflecting mirror (601) is installed on the second rotating shaft plate (602), the third reflecting mirror assembly (7) comprises a third reflecting mirror (701) and a third rotating shaft plate (702), and the third reflecting mirror (701) is installed on the third rotating shaft plate (702).

7. A multiple reflection laser gas detection cell as defined in claim 6, wherein: the first rotating shaft plate (502), the second rotating shaft plate (602) and the third rotating shaft plate (702) are respectively provided with a rotating motor (9).