Ammonia escape gas chamber with constant-temperature core unit

Abstract

The utility model relates to the technical field of environmental engineering, in particular to an ammonia escape gas chamber with a constant-temperature core unit, which comprises a gas chamber main body, two ends of the gas chamber main body are respectively provided with a laser transmitting end and a laser reflecting end, and two pipe orifices of the gas chamber main body are respectively provided with a lens bracket; the laser transmitting end and the laser reflecting end each comprise a frame body, and each frame body is provided with a four-dimensional adjusting table and a protective cover. According to the ammonia escape gas chamber with the constant-temperature core unit, the gas chamber main body is matched with the laser emitting end and the laser reflecting end to be used for containing a gas sample to be detected, detection is carried out through laser, and the gas chamber pipe heat insulation gasket, the lens heat insulation ring and the heat insulation plate have the effects of reducing the influence of the external environment on the laser head and keeping the temperature stable; and the laser head core unit is composed of a refrigeration sheet and a fan, so that the temperature is further controlled, and the laser head core unit can work at a constant temperature and is not influenced by the change of an external environment.

Description

Technical Field

[0001] This utility model relates to the field of environmental engineering technology, specifically to a constant-temperature ammonia escape chamber as its core unit. Background Technology

[0002] The temperature varies greatly at different times of the day, and the concentration measured by TdLAS is easily affected by the outdoor temperature, resulting in inconsistent heat dissipation temperature of the laser head, affecting temperature stability, absorption waveform shift, and background signal distortion, which directly leads to inaccurate concentration values. Although the laser head has an integrated cooling chip, the temperature of the heat dissipation area is unstable and easily loses constant temperature balance. The only way to cool the heat dissipation area of ​​the laser head is through simple compressed air circulation. The temperature of the heat dissipation area is an uncertain factor and is easily affected by the environment. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a constant-temperature ammonia escape chamber with a core unit, comprising a chamber body, with a laser emitting end and a laser reflecting end installed at both ends of the chamber body, and a lens bracket provided at both openings of the chamber body.

[0004] Both the laser emitting end and the laser reflecting end include a frame, on which a four-dimensional adjustment platform and a protective cover are installed. The laser emitting support plate and the reflector are respectively installed on the four-dimensional adjustment platform.

[0005] A laser receiver bracket is installed on the right side of the frame;

[0006] A lens is installed on the inner side of the lens bracket, and a lower block and an upper block are wrapped around the outer side of the air chamber body;

[0007] The air chamber body has two air chamber tube heat insulation pads installed at its two openings. The lens bracket is located inside the air chamber tube heat insulation pad. One side of the air chamber tube heat insulation pad has a concave surface. The frame is installed in the corresponding concave surface, and one side of the protective cover extends into the corresponding concave surface.

[0008] A lens heat insulation ring is installed on one side of the lens holder;

[0009] The frame is equipped with heat insulation panels.

[0010] Cooling elements and fans are stacked downwards at the bottom of the frame on the right.

[0011] Furthermore, the two ports of the air chamber body are fitted with sealing rings that are in contact with the corresponding lens brackets.

[0012] Furthermore, an annular edge is formed on the inner side of the lens holder, and an annular groove is formed on the annular edge. An elastic filler can be placed in the annular groove, and the lens is attached to the annular edge and covers the annular groove.

[0013] Furthermore, the lens bracket is fixed to the air chamber body by screws, and the outer side of the lens heat insulation ring has a groove adapted to the screws. The lens heat insulation ring and the lens bracket are also fixed by screws.

[0014] Furthermore, the top of the upper block is provided with two sets of U-shaped grooves that are adapted to the inlet and outlet of the gas chamber body.

[0015] Furthermore, two sets of half-grooves are provided on both sides of the lower block, and positioning holes are provided in the half-grooves. Upper grooves are provided on both sides of the upper block, which are opposite to the corresponding half-grooves.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] The core unit's constant-temperature ammonia escape chamber, in conjunction with the laser emitting and reflecting ends, is used to contain the gas sample to be tested and to detect it using a laser. The heat insulation pads, lens heat insulation rings, and heat insulation plates in the chamber tube reduce the influence of the external environment on the laser head, maintain temperature stability, and thus ensure the consistency and accuracy of the measurement results. Furthermore, the cooling elements and fan are used to further control the temperature, ensuring that the core unit of the laser head can operate at a constant temperature, unaffected by changes in the external environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This utility model Figure 1 A rear sectional view of the connection structure of the right-side protective cover.

[0020] Figure 3 This utility model Figure 1 A rear cross-sectional view of the left-side protective shield connection structure.

[0021] In the diagram: 1. Gas chamber body; 2. Lower block; 3. Upper block; 4. Half-groove; 5. Positioning hole; 6. Upper groove; 7. U-shaped groove; 8. Gas chamber tube heat insulation gasket; 9. Sealing ring; 10. Lens bracket; 12. Lens heat insulation ring; 13. Groove opening; 14. Ring edge; 15. Ring groove; 16. Frame; 17. Lens; 18. Heat insulation plate; 19. Laser receiver bracket; 20. Laser emitter support plate; 21. Four-dimensional adjustment platform; 22. Reflector; 23. Fan; 24. Protective cover; 25. Cooling chip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 In this embodiment, a core unit of a temperature-controlled ammonia escape chamber includes a chamber body 1. A lower block 2 and an upper block 3 are fixed to the outside of the chamber body 1 with screws. Two heat-insulating gaskets 8 are fixed to the two openings of the chamber body 1 with screws. A lens bracket 10 is also installed at the opening, located inside the heat-insulating gasket 8. A lens 17 is fixedly installed on the inner side of the lens bracket 10. A lens heat-insulating ring 12 is installed on the opposite side of each of the two lens brackets 10. A concave surface is formed on the opposite side of the heat-insulating gasket 8, and a solid... A frame 16 is provided, on which a four-dimensional adjustment platform 21, a heat insulation plate 18, and a protective cover 24 are installed. One side of the protective cover 24 extends into a corresponding concave surface. A laser emitter support plate 20 is installed on the adjustment plate of the right four-dimensional adjustment platform 21, and a reflector 22 is installed on the adjustment plate of the left four-dimensional adjustment platform 21. A laser receiver bracket 19 located between the heat insulation plate 18 and the laser emitter support plate 20 is installed on the right frame 16. A cooling chip 25 and a fan 23 covering the cooling chip 25 are installed at the bottom of the right frame 16.

[0024] In the above structure, the lower and upper blocks can be made of high-efficiency heat insulation materials. When they are tightly wrapped around the outside of the air chamber body by screws, an additional heat insulation layer is formed, which helps to reduce the conduction of external heat into the core unit and protect the stability of the internal measurement environment.

[0025] The heat insulation pads for the air chamber tubes are located at the two openings of the air chamber body, directly contacting the high-temperature area and effectively preventing heat from being conducted into the interior;

[0026] The lens heat insulation ring is installed on the outside of the lens bracket, which further enhances the heat insulation performance and protects it from the effects of temperature fluctuations;

[0027] The frame is installed in the concave surface of the heat insulation pad of the air chamber tube, so that the frame is installed in a relatively isolated position. In this way, the direct heat conduction path can be reduced. Since the frame is not directly connected to the heat source, it can effectively prevent heat from entering the air chamber body from the outside in an unexpected way, maintain the internal temperature stability, and improve the overall heat insulation effect.

[0028] The four-dimensional adjustment stage allows for precise adjustment of the laser emitter support plate and reflector to ensure optimal optical path. Meanwhile, the heat shield and protective cover also play a crucial protective role, blocking radiative heat transfer from high-temperature fumes to optical components and preventing external environmental influences on the precision instrument. The protective cover also provides an additional thermal barrier, reducing the impact of external heat on internal components.

[0029] The cooling element is located between the frame and the fan. An aluminum alloy heat sink is installed where the fan is in contact with the cooling element, and the gap is filled with thermally conductive silicone. During operation, the fan continuously rotates to dissipate heat from the aluminum alloy heat sink. A Φ4mm air pipe is directly connected to the cooling element, and the air pipe only allows positive compressed air to circulate to the U-shaped air passage inside the aluminum alloy heat sink for continuous heat dissipation. The cooling element circuit uses a bridge drive circuit and a PID program to maintain a constant temperature. The Pt1000 provides real-time feedback on the current temperature of the frame. The constant temperature is set to 35 degrees Celsius. When the temperature is higher than 35 degrees Celsius, the cooling element cools down; when the temperature stabilizes below 35 degrees Celsius, the cooling element heats up.

[0030] In addition, sealing rings 9 are embedded in the two openings of the air chamber body 1, which are in close contact with the corresponding lens brackets 10, thereby improving airtightness.

[0031] Meanwhile, a ring edge 14 is formed at an inner 20-point mark of the lens holder 10, and a ring groove 15 is formed on the ring edge 14. An elastic filler can be placed in the ring groove 15. The lens 17 is attached to the ring edge 14 and covers the ring groove 15. The ring edge provides installation positioning and also helps prevent the lens from shifting when subjected to external forces. The ring groove is specifically designed for placing the elastic filler, ensuring that the filler can be tightly embedded and will not easily fall off or shift. The elastic filler is mainly used to enhance sealing and cushioning effect. It can fill the tiny gaps between the lens and the convex edge, preventing gas, dust, etc. from entering the interior and affecting optical performance; at the same time, it can also absorb vibration and impact, protecting the lens from damage.

[0032] In the above, with Figure 1 As shown, the right end of the gas chamber body 1 is the core unit of td l as.

[0033] Further explanation: the outer side of the lens heat insulation ring 12 has a slot 13 that matches the screw in the lens bracket 10. The lens heat insulation ring 12 and the lens bracket 10 are also fixed by screws. When the lens bracket is fixed to the air chamber body by screws, the head of the screw protrudes. Therefore, the slot on the lens heat insulation ring matches the screw, thus enabling precise thread connection between the lens heat insulation ring and the lens bracket, achieving precise positioning. Furthermore, by fixing and covering the lens bracket, the lens heat insulation ring reduces the heat conduction path and improves the heat insulation effect.

[0034] Further explanation: The upper block 3 has U-shaped grooves 7 on its top left and right sides, respectively adapted to the smoke inlet and outlet of the gas chamber body 1. The lower block 2 has two sets of semi-circular grooves 4 on its front and rear sides, each with a positioning hole 5. The upper block 3 has upper grooves 6 on its front and rear sides, corresponding to the semi-circular grooves 4. The U-shaped grooves adapt to the shape of the gas chamber body, extending the smoke inlet and outlet. By threading cable ties or straps through the positioning holes from below and then fastening or locking them along the semi-circular and upper grooves to the top of the upper block, the stability of the upper and lower blocks can be improved, and they can also be fixed and positioned on the bracket.

[0035] The entire workflow is now complete, and anything not described in detail in this specification is existing technology known to those skilled in the art.

[0036] It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core unit constant temperature ammonia escape gas chamber, comprising a gas chamber body (1), with a laser emitting end and a laser reflecting end installed at both ends of the gas chamber body (1), and a lens bracket (10) provided at both ends of the gas chamber body (1); Both the laser emitting end and the laser reflecting end include a frame (16), on which a four-dimensional adjustment platform (21) and a protective cover (24) are installed. The four-dimensional adjustment platform (21) is equipped with a laser emitter support plate (20) and a reflector (22). A laser receiver bracket (19) is installed on the frame (16) on the right side; A lens (17) is mounted on the inner side of the lens holder (10), characterized in that: The outer side of the air chamber body (1) is wrapped with a lower block (2) and an upper block (3); The air chamber body (1) has two air chamber tube heat insulation pads (8) installed at both pipe openings. The lens bracket (10) is located inside the air chamber tube heat insulation pad (8). One side of the air chamber tube heat insulation pad (8) has a concave surface. The frame (16) is installed in the corresponding concave surface, and one side of the protective cover (24) extends into the corresponding concave surface. A lens heat insulation ring (12) is installed on one side of the lens bracket (10); A heat insulation plate (18) is installed on the frame (16): Cooling fins (25) and fans (23) are stacked downwards on the bottom of the frame (16) on the right side.

2. The ammonia escape chamber with a constant temperature core unit according to claim 1, characterized in that: The two ports of the air chamber body (1) are fitted with sealing rings (9) that are in contact with the corresponding lens brackets (10).

3. The ammonia escape chamber with a constant temperature core unit according to claim 2, characterized in that: The inner side of the lens holder (10) has a ring edge (14) and a ring groove (15) is provided on the ring edge (14). An elastic filler can be placed in the ring groove (15). The lens (17) is attached to the ring edge (14) and covers the ring groove (15).

4. The ammonia escape chamber with a constant temperature core unit according to claim 3, characterized in that: The lens bracket (10) is fixed to the air chamber body (1) by screws. The outer side of the lens heat insulation ring (12) has a groove (13) that matches the screws. The lens heat insulation ring (12) and the lens bracket (10) are also fixed by screws.

5. The ammonia escape chamber with a constant temperature core unit according to claim 1, characterized in that: The top of the upper block (3) is provided with two sets of U-shaped grooves (7) that are adapted to the smoke inlet and outlet of the gas chamber body (1).

6. The ammonia escape chamber with a constant temperature core unit according to claim 5, characterized in that: The lower block (2) has two sets of half-grooves (4) on both sides, and positioning holes (5) are provided in the half-grooves (4). The upper block (3) has upper grooves (6) on both sides that are opposite to the corresponding half-grooves (4).

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