Gas detection device

Abstract

The utility model discloses a gas detection device. According to the technical scheme, the gas detection device comprises a fixed plate, the air chamber is fixedly connected to the top of the fixing plate, and the two ends of the air chamber are open; the two sets of lenses are arranged at the two ends of the air chamber respectively so as to seal the two ends of the air chamber, and the lenses are detachably connected to the top of the fixing plate; the two groups of reflectors are arranged, and the two groups of reflectors are respectively arranged on the sides, deviating from each other, of the two groups of lenses; through the arrangement of the lens, unclean gas does not make contact with the reflector but can only make contact with the lens, and after the lens is polluted, due to the detachable connection of the lens, the lens can be conveniently detached to be cleaned, so that the cleaning operation is convenient and rapid.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas detection, more particularly, it relates to a gas detection device. BACKGROUND

[0002] The gas detection device is usually used for detecting SO2, NO, NO2 and other gases, and usually comprises a gas chamber, a light source and a spectrometer, the gas chamber is provided with an air inlet nozzle and an air outlet nozzle, reflecting mirrors are arranged at the two ends of the gas chamber, and a Y-shaped optical fiber is arranged at one end of the gas chamber.

[0003] In the existing gas detection device, the lens is fixed in the gas chamber, and in the daily use process, the problem of not clean gas entering the gas chamber may occur due to incomplete sampling flue gas filtration and failure to replace the filter element in time, the not clean gas entering the gas chamber may pollute the lens, thereby affecting the detection data, and even the detection cannot be performed, and in the prior art, when the lens needs to be cleaned due to the above problems, the gas chamber needs to be completely detached from the instrument, and then a special cleaning agent is used to clean the lens, so that the cleaning operation is complicated and inconvenient. UTILITARY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model aims to provide a gas detection device, which is characterized in that the lens is arranged, so that the not clean gas cannot contact the reflecting mirror but only contacts the lens, and after the lens is polluted, the lens can be easily detached and cleaned due to the detachable connection of the lens, so that the cleaning operation is convenient and fast.

[0005] To achieve the above object, the utility model provides the following technical scheme: a gas detection device, comprising a fixed plate,

[0006] a gas chamber fixedly connected to the top of the fixed plate, the two ends of the gas chamber being open;

[0007] lenses, the lenses being arranged in two groups, the two groups of lenses being arranged at the two ends of the gas chamber to close the two ends of the gas chamber, and the lenses being detachably connected to the top of the fixed plate;

[0008] and reflecting mirrors, the reflecting mirrors being arranged in two groups, the two groups of reflecting mirrors being arranged on the sides away from each other of the two groups of lenses.

[0009] The utility model is further provided as follows: further comprising a lens box, each group of lenses corresponding to a lens box, and the lenses in the same group being fixed on the corresponding lens box.

[0010] The utility model further sets up: still include dust cover, every group of mirror corresponds a dust cover, the mirror of same group is fixed on the dust cover of corresponding,

[0011] The utility model further sets up: the dust cover is connected on the dust cover through the step screw that passes through the dust cover and is connected with the air chamber screw thread, and the mirror box is arranged between the dust cover and the air chamber,

[0012] The spring is set up on the step screw and acts on the dust cover, and the spring pushes the dust cover through self elastic force to press the mirror box on the air chamber.

[0013] The utility model further sets up: the mirror box and the air chamber connection one side and with dust cover connection one side all are provided with sealing ring.

[0014] The utility model further sets up: the dust cover and fixed plate contact one side are provided with sealing ring.

[0015] The utility model further sets up: the dust cover both sides are fixedly connected with the connecting block that extends towards the air chamber direction and is located mirror box both sides respectively, the step screw passes through the connecting block, and the connecting block forms the access hole with mirror box between.

[0016] The utility model further sets up: still include light source, the light source sets up in fixed plate one end,

[0017] And spectrometer, the spectrometer with light source sets up in the same end of fixed plate.

[0018] The utility model further sets up: two mirrors are set up in the dust cover away from light source, are first mirror and third mirror respectively, one mirror is set up in the dust cover close to light source, sets up as second mirror,

[0019] The light of light source is first shot into first mirror, enters second mirror after being reflected to first mirror, enters third mirror after being reflected to second mirror, then enters spectrometer after being reflected to third mirror.

[0020] The utility model further sets up: three lenses are set up in the mirror box close to light source, are first lens, second lens and third lens respectively, two lenses are set up in the mirror box away from light source, are fourth lens and fifth lens respectively,

[0021] The first lens is used for the light emitted by the light source to pass through, the second lens is used for the light reflected by the first mirror to the second mirror and the light reflected by the second mirror to the third mirror to pass through, and the third lens is used for the light reflected by the third mirror to the spectrometer to pass through.

[0022] In conclusion, the utility model discloses the following beneficial effects compared with the prior art: the utility model discloses the setting of the lens, so that the unclean gas does not contact the mirror and can only contact the lens, and after the lens is contaminated, the detachable connection of the lens facilitates the lens to be detached and cleaned, so that the cleaning operation is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the schematic view of the overall structure of the embodiment;

[0024] Figure 2 It is the schematic view of the air chamber, mirror box and dust cover of the embodiment;

[0025] Figure 3 It is Figure 2 the enlarged schematic view of A part;

[0026] Figure 4 It is the schematic view of the embodiment that the mirror box is detached from the air chamber and the dust cover;

[0027] Figure 5 It is the schematic view of the embodiment that the mirror arrangement state is embodied.

[0028] In the drawing: 1, fixed plate;2, air chamber;3, dust cover;31, first mirror;32, second mirror;33, third mirror;4, mirror box;41, first lens;42, second lens;43, third lens;44, fourth lens;45, fifth lens;5, light source;6, spectrometer;7, connecting block;71, access hole;8, step screw;9, handle. DETAILED DESCRIPTION

[0029] In order to make the personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model is described clearly and completely below in combination with the drawings of the utility model, based on the embodiment in the application, other similar embodiments obtained by the person skilled in the art without creative labor shall belong to the protection scope of the application. In addition, the direction words mentioned in the following embodiments, such as 'up', 'down', 'left', 'right' and the like, are only the directions of the drawings, therefore, the direction words used are used to explain but not to limit the creation of the utility model.

[0030] The utility model will be further described below in combination with the drawings and preferred embodiments.

[0031] Embodiment: a gas detection device, refer to the drawings Figure 1 -attached Figure 5 , including fixed plate 1, gas chamber 2, lens and reflector;The gas chamber 2 is fixedly connected at the top of fixed plate 1, and the both ends of gas chamber 2 are open;The lens is provided with two groups, and two groups of lenses are arranged at the both ends of gas chamber 2 to close the both ends of gas chamber 2, and the lens is detachably connected at the top of fixed plate 1;The reflector is provided with two groups, and two groups of reflectors are arranged on the side away from each other of two groups of lenses respectively.Gas chamber 2 is connected with air inlet and air outlet, for sending gas into and out of gas chamber 2.

[0032] Through the setting of lens, the unclean gas does not contact the reflector but only contacts the lens, and after the lens is contaminated, the detachable connection of lens facilitates the lens to be detached for cleaning, so that the cleaning operation is convenient and fast.

[0033] Specifically, the embodiment also includes mirror box 4, each group of lenses corresponds to a mirror box 4, and the lenses of the same group are fixed on the corresponding mirror box 4, and the mirror box 4 is detachably connected on the fixed plate 1, and through the setting of mirror box 4, a group of lenses can be conveniently detached as a whole.

[0034] Specifically, the embodiment also includes dust cover 3, each group of reflectors corresponds to a dust cover 3, and the reflectors of the same group are fixed on the corresponding dust cover 3.

[0035] Specifically, the dust cover 3 is connected on the dust cover 3 through the step screw 8 passing through the dust cover 3 and being screwed with the gas chamber 2, and the mirror box 4 is arranged between the dust cover 3 and the gas chamber 2;The step screw 8 is provided with a spring acting on the dust cover 3, and the spring pushes the dust cover 3 by its own elastic force to press the mirror box 4 on the gas chamber 2.

[0036] Under the action of the spring on the step screw 8, the dust cover 3 can be pressed on the mirror box 4, and the mirror box 4 can be pressed on the gas chamber 2, realizing the fixation of the mirror box 4 on the fixed plate 1;When the mirror box 4 needs to be detached, the spring needs to be extruded by pulling the dust cover 3, so as to relax the pressing of the mirror box 4, so that the mirror box 4 can be taken out from between the gas chamber 2 and the dust cover 3, thereby facilitating the cleaning of the lens.

[0037] Specifically, the handle 9 is fixedly connected on the mirror box 4, and through the setting of the handle 9, the mirror box 4 can be more conveniently taken out from between the gas chamber 2 and the dust cover 3.

[0038] Specifically, the mirror box 4 is provided with a sealing ring on the side connected with the air chamber 2 and the side connected with the dust cover 3. Through the arrangement of the sealing ring, the leakage of the gas in the air chamber 2 can be prevented.

[0039] Specifically, the dust cover 3 is provided with a sealing ring on the side in contact with the fixed plate 1.

[0040] Specifically, the dust cover 3 is provided with two connecting blocks 7 extending towards the air chamber 2 and located on the two sides of the mirror box 4, respectively. The step screw 8 passes through the connecting block 7, and the connecting block 7 and the mirror box 4 form an access hole 71. Through the arrangement of the access hole 71, the tool can be inserted into the access hole 71 to pry the dust cover 3 to move and loosen the compression of the mirror box 4 when the mirror box 4 is disassembled.

[0041] Specifically, the embodiment further comprises a light source 5 and a spectrometer 6. The light source 5 is arranged at one end of the fixed plate 1, and the spectrometer 6 is arranged at the same end of the fixed plate 1 as the light source 5. The light emitted by the light source 5 enters the air chamber 2 after passing through the dust cover 3 and is injected into the spectrometer 6 after multiple reflections of the two groups of mirrors.

[0042] The embodiment omits the arrangement of the optical fiber. When the optical fiber is arranged, the wire body of the optical fiber is mostly exposed to the outside. When in use, the vibration will cause the detection data to be disturbed, and the price of the optical fiber is high, which increases the production cost of the device. In the embodiment, the distance between the light source 5 and the air chamber 2 is shortened, and the light is directly injected into the air chamber 2 by the light source 5, so that the influence of the disturbance on the data is not considered and the production cost is reduced.

[0043] Specifically, two mirrors are arranged in the dust cover 3 away from the light source 5, which are a first mirror 31 and a third mirror 33. One mirror is arranged in the dust cover 3 close to the light source 5, which is a second mirror 32. The light emitted by the light source 5 first enters the first mirror 31, is reflected by the first mirror 31, enters the second mirror 32, is reflected by the second mirror 32, enters the third mirror 33, and then is reflected by the third mirror 33 to enter the spectrometer 6.

[0044] Specifically, two light-transmitting parts are arranged on the dust cover 3 close to the light source 5. One light-transmitting part corresponds to the light source 5 so that the light source 5 passes through the light-transmitting part to enter the air chamber 2. The other light-transmitting part corresponds to the spectrometer 6 so that the gas in the air chamber 2 passes through the light-transmitting part to enter the spectrometer 6.

[0045] Specifically, three lenses are arranged in the mirror box 4 close to the light source 5, which are a first lens 41, a second lens 42 and a third lens 43. Two lenses are arranged in the mirror box 4 away from the light source 5, which are a fourth lens 44 and a fifth lens 45.

[0046] The first lens 41 is for the light emitted by the light source 5 to pass through, the second lens 42 is for the light reflected by the first mirror 31 to the second mirror 32 and the light reflected by the second mirror 32 to the third mirror 33 to pass through, and the third lens 43 is for the light reflected by the third mirror 33 to the spectrometer 6 to pass through; the fourth lens 44 is for the light emitted by the light source 5 and the light reflected by the first mirror 31 to the second mirror 32 to pass through, and the fifth lens 45 is for the light reflected by the second mirror 32 to the third mirror 33 and the light reflected by the third mirror 33 to the spectrometer 6 to pass through.

[0047] Specifically, in the embodiment, the light source 5 is set as a tritium lamp.

[0048] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A gas detection device, characterized by: It comprises a fixed plate (1); A gas chamber (2) is fixedly connected on the top of the fixed plate (1), and both ends of the gas chamber (2) are open; Two sets of lenses are arranged, and the two sets of lenses are arranged at both ends of the gas chamber (2) to close both ends of the gas chamber (2), and the lenses are detachably connected on the top of the fixed plate (1); And two sets of mirrors are arranged, and the two sets of mirrors are arranged on the sides away from each other of the two sets of lenses.

2. The gas detection device of claim 1, wherein: It also comprises a mirror box (4), and each set of lenses corresponds to a mirror box (4), and the lenses of the same group are fixed on the corresponding mirror box (4).

3. A gas detection device according to claim 2, wherein: It also comprises a dust cover (3), and each set of mirrors corresponds to a dust cover (3), and the mirrors of the same group are fixed on the corresponding dust cover (3).

4. A gas detection device according to claim 3, wherein: The dust cover (3) is connected on the dust cover (3) by the stepped screw (8) penetrating through the dust cover (3) and being screwed with the gas chamber (2), and the mirror box (4) is arranged between the dust cover (3) and the gas chamber (2); A spring acting on the dust cover (3) is sleeved on the stepped screw (8), and the spring pushes the dust cover (3) by its own elastic force to press the mirror box (4) on the gas chamber (2).

5. A gas detection device according to claim 4, wherein: The mirror box (4) is provided with a sealing ring on the side connected with the gas chamber (2) and the side connected with the dust cover (3).

6. A gas detection device according to claim 5, wherein: The dust cover (3) is provided with a sealing ring on the side in contact with the fixed plate (1).

7. A gas detection device according to claim 6, wherein: The dust cover (3) is fixedly connected with the connecting blocks (7) extending towards the gas chamber (2) and located on both sides of the mirror box (4), respectively, the stepped screw (8) penetrates through the connecting blocks (7), and the connecting blocks (7) and the mirror box (4) form an access opening (71).

8. A gas detection device according to claim 7, wherein: It also comprises a light source (5) arranged at one end of the fixed plate (1); And a spectrometer (6) arranged at the same end of the fixed plate (1) as the light source (5).

9. A gas detection device according to claim 8, wherein: Two mirrors are arranged in the dust cover (3) away from the light source (5), which are a first mirror (31) and a third mirror (33), and one mirror is arranged in the dust cover (3) close to the light source (5), which is a second mirror (32); The light emitted by the light source (5) first enters the first mirror (31), is reflected by the first mirror (31) and enters the second mirror (32), is reflected by the second mirror (32) and enters the third mirror (33), and then is reflected by the third mirror (33) and enters the spectrometer (6).

10. The gas detection device of claim 8, wherein: Three lenses are arranged in the mirror box (4) close to the light source (5), which are a first lens (41), a second lens (42) and a third lens (43), and two lenses are arranged in the mirror box (4) away from the light source (5), which are a fourth lens (44) and a fifth lens (45); The first lens (41) is for the light emitted by the light source (5) to pass through, the second lens (42) is for the light reflected by the first mirror (31) to the second mirror (32) and the light reflected by the second mirror (32) to the third mirror (33) to pass through, the third lens (43) is for the light reflected by the third mirror (33) to the spectrometer (6) to pass through; the fourth lens (44) is for the light emitted by the light source (5) and the light reflected by the first mirror (31) to the second mirror (32) to pass through, the fifth lens (45) is for the light reflected by the second mirror (32) to the third mirror (33) and the light reflected by the third mirror (33) to the spectrometer (6) to pass through.

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