CN211927626U - Particulate matter measuring chamber structure of forward scattering method - Google Patents
Particulate matter measuring chamber structure of forward scattering method Download PDFInfo
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- CN211927626U CN211927626U CN202020564755.5U CN202020564755U CN211927626U CN 211927626 U CN211927626 U CN 211927626U CN 202020564755 U CN202020564755 U CN 202020564755U CN 211927626 U CN211927626 U CN 211927626U
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- glass tube
- chamber structure
- connecting seat
- receiving lens
- air outlet
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Abstract
The utility model discloses a particle measuring chamber structure of a forward scattering method, which is used for a particle concentration detection device; the particle measuring chamber structure of the forward scattering method comprises a glass tube, a receiving lens, a sensor and a laser component; one end of the glass tube is an air inlet end, and the other end of the glass tube is an air outlet end; the sensor is correspondingly connected with the receiving lens through a signal optical fiber; the receiving lens is fixed on the outer side of the glass tube, and the top of the receiving lens forms a measuring area corresponding to the position in the glass tube; the laser assembly is arranged outside the air outlet end of the glass tube, and light beams emitted by the laser assembly irradiate the measuring area of the glass tube. The utility model discloses a set up the glass pipe that has the measuring area in the measuring chamber structure for the appearance gas can not with receiving lens direct contact, thereby can make receiving lens can keep totally, also makes the maintenance of measuring chamber simpler.
Description
Technical Field
The utility model relates to a particulate matter detects technical field, specifically is a particulate matter measuring room structure that relates to a forward scattering method.
Background
At present, in the particle detection at home and abroad, the light scattering method is widely applied, when light beams are incident on particles, the light beams are scattered to the periphery of the space, each scattering parameter of the light is closely related to the concentration of the smoke particles, and the concentration of the gas particles is measured by a specific algorithm.
However, the particle measuring chamber of the current particle concentration detecting apparatus generally has the disadvantage that the receiving lens is easily contaminated. Therefore, it is a problem to be solved to provide a measuring chamber structure which has a simple structure, is convenient to maintain and can prevent a receiving lens from being polluted easily.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art exists above, the utility model aims at providing a particulate matter measuring chamber structure of forward scattering method, its simple structure, convenient to use and can also prevent effectively that receiving lens from receiving the pollution to it is more convenient to make the measuring chamber maintain, and it has still solved a great deal of problem among the prior art simultaneously.
In order to realize the purpose, the technical scheme of the utility model is that:
a particle measuring chamber structure of a forward scattering method is used for a particle concentration detection device; the particle measuring chamber structure of the forward scattering method comprises a glass tube, a receiving lens, a sensor and a laser component; one end of the glass tube is an air inlet end, and the other end of the glass tube is an air outlet end; the sensor is correspondingly connected with the receiving lens through a signal optical fiber; the receiving lens is fixed on the outer side of the glass tube, and the top of the receiving lens forms a measuring area corresponding to the position in the glass tube; the laser assembly is arranged outside the air outlet end of the glass tube, and light beams emitted by the laser assembly irradiate the measuring area of the glass tube.
As a specific embodiment, the particle measuring chamber structure of the forward scattering method further includes a window sheet fixed outside the gas outlet end of the glass tube, so that the light beam emitted by the laser assembly passes through the window sheet and then irradiates the measuring region.
Furthermore, the particle measuring chamber structure of the forward scattering method also comprises a connecting seat with a hollow structure; one end of the connecting seat is hermetically connected with the air outlet end of the glass tube, and the hollow structure of the connecting seat is communicated with the inside of the glass tube; the window sheet is fixed in the hollow structure of the connecting seat; and an air outlet positioned between the glass tube and the window sheet is also arranged in the connecting seat.
Further, the glass tube is detachably connected with the connecting seat.
Further, the air outlet end of the glass tube is embedded into a groove of the connecting seat.
Furthermore, a compressed air inlet for entering compressed air is further formed in one side, close to the window sheet, of the connecting seat, so that an air curtain for protecting the window sheet is formed in the connecting seat; the compressed air inlet is positioned between the window sheet and the air outlet.
As a specific example, the glass tube is horizontally disposed.
The utility model has the advantages that:
(1) the utility model discloses a set up the glass pipe in the measuring chamber structure to at the intraductal measuring area that forms of glass, make the measuring chamber can not with receiving lens direct contact at the during operation appearance gas, thereby can make receiving lens can keep totally, need not go clean receiving lens when maintaining the measuring chamber, the maintenance of measuring chamber is simpler promptly, and owing to do not need the air curtain to protect receiving lens, has also simplified the structure of measuring chamber to a certain extent.
(2) The utility model has the advantages that the window sheet is arranged, so that the light beam can smoothly pass through the window sheet, and meanwhile, the window sheet can also prevent sample gas from passing through the window sheet to pollute the laser component; the compressed gas is input through the compressed gas inlet in the connecting seat, so that a gas curtain for protecting the window sheet from being polluted can be formed in the connecting seat, the cleanness and tidiness of the window sheet are ensured, the gas can be discharged from the gas outlet, and the gas can not be diluted to influence the measurement accuracy.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numerals:
1. a glass tube; 11. a measurement zone; 2. a receiving lens; 3. a sensor; 4. a window sheet; 5. a light beam; 6. a connecting seat; 61. an air outlet; 62. a compressed gas inlet; 100. (ii) particulate matter.
Detailed Description
The invention will be further elucidated with reference to the drawings and the embodiments, which are exemplary only and do not limit the scope of the invention.
As shown in fig. 1, a particulate matter measuring chamber structure of a forward scattering method is used for a particulate matter concentration detecting apparatus; the particle measuring chamber structure of the forward scattering method comprises a glass tube 1, a receiving lens 2, a sensor 3 and a laser component; one end of the glass tube 1 is an air inlet end, and the other end of the glass tube 1 is an air outlet end; the sensor 3 is correspondingly connected with the receiving lens 2 through a signal optical fiber; the receiving lens 2 is fixed on the outer side of the glass tube 1, and the top of the receiving lens 2 forms a measuring area 11 corresponding to the position in the glass tube 1; the laser assembly is arranged outside the air outlet end of the glass tube 1, and the light beam 5 emitted by the laser assembly irradiates to the measuring area 11 of the glass tube 1. Specifically, the laser assembly includes a laser, a lens corresponding to the laser, and the like.
Preferably, the glass tube 1 is horizontally arranged, but it will be appreciated by those skilled in the art that the glass tube 1 may also be vertically arranged.
The particle measuring chamber of the forward scattering method also comprises a window sheet 4, the window sheet 4 is fixed outside the air outlet end of the glass tube 1, and the light beam 5 emitted by the laser component passes through the window sheet 4 and then irradiates to the measuring area 11.
The particle measuring chamber structure of the forward scattering method also comprises a connecting seat 6 with a hollow structure; one end of the connecting seat 6 is hermetically connected with the air outlet end of the glass tube 1, and the hollow structure of the connecting seat 6 is communicated with the inside of the glass tube 1; the window sheet 4 is fixed in the hollow structure of the connecting seat 6, and the window sheet 4 is connected with the connecting seat 6 in a sealing way in order to keep the sealing property; a gas outlet 61 is also provided in the connecting base 6 between the glass tube 1 and the window plate 4 for discharging the sample gas, and in the preferred embodiment, the gas outlet 61 is vertically disposed, but those skilled in the art will appreciate that the gas outlet 61 may also be horizontally disposed. It should be noted that the connecting seat 6 may be formed by one or more components, and of course, may be made into various shapes according to the needs.
In order to conveniently disassemble and assemble the glass tube 1, the glass tube 1 is detachably connected with the connecting seat 6. Specifically, the air outlet end of the glass tube 1 is embedded into a groove of the connecting seat 6. Of course, a sealing gasket may be provided between the glass tube 1 and the coupling seat 6 in order to ensure sealability.
A compressed air inlet 62 for entering compressed air is further formed at the bottom of the connecting base 6, so that an air curtain for protecting the window sheet 4 is formed in the connecting base 6; the compressed gas inlet 62 is located between the window piece 4 and the gas outlet 61. Through setting up this compressed gas entry 62 for the air curtain that forms in the connecting seat 6 can be protected window piece 4, makes window piece 4 not polluted by the sample gas, and these gases can be discharged from gas outlet 61 with the sample gas together after getting into connecting seat 6, consequently can not cause the influence to the sample gas in the glass pipe 1.
In use, in order to facilitate the disassembly of the glass tube 1, the glass tube 1 may be detachably mounted on a base of the particulate matter measuring chamber structure of the forward scattering method, so that the glass tube 1 can be easily cleaned.
The utility model discloses when using, the sample gas is got into and is shone by light beam 5 by the inlet end of glass pipe 1, and sensor 3 senses the sample gas particulate matter 100 that is arranged in measuring area 11 and receives data and calculate particulate matter concentration etc. to processing center through the algorithm, and then the gas outlet 61 discharge of sample gas from connecting seat 6 constantly gets into and discharges through the sample gas to form a circulation circuit.
The utility model discloses a set up glass pipe 1 in the measuring chamber structure to at the intraductal measuring region 11 that forms of glass, make appearance gas can not with receiving lens 2 direct contact, thereby can make receiving lens 2 can keep clean, need not go clean receiving lens 2 when maintaining the measuring chamber, the maintenance of measuring chamber is simpler promptly, and owing to do not need the air curtain to protect receiving lens 2, the structure of measuring chamber has been simplified to a certain extent.
The utility model has the advantages that the window sheet 4 is arranged, so that the light beam 5 can smoothly pass through the window sheet 4, and meanwhile, the window sheet 4 can also prevent sample gas from passing through the window sheet 4 to pollute the laser component; can form the uncontaminated air curtain of protection window piece 4 in making connecting seat 6 through compressed gas inlet 62 input compressed gas in connecting seat 6 to let window piece 4 clean and tidy also obtain guaranteeing, and the air curtain can be followed gas outlet 61 and discharged, can not dilute the sample gas and cause the influence to measuring the accuracy.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (7)
1. A particulate matter measuring chamber structure of forward scattering method for particulate matter concentration detection device, its characterized in that:
the particle measuring chamber structure of the forward scattering method comprises a glass tube, a receiving lens, a sensor and a laser component; one end of the glass tube is an air inlet end, and the other end of the glass tube is an air outlet end; the sensor is correspondingly connected with the receiving lens through a signal optical fiber; the receiving lens is fixed on the outer side of the glass tube, and the top of the receiving lens forms a measuring area corresponding to the position in the glass tube; the laser assembly is arranged outside the air outlet end of the glass tube, and light beams emitted by the laser assembly irradiate the measuring area of the glass tube.
2. The forward-scattering particle measurement chamber structure of claim 1, wherein:
the particle measuring chamber structure of the forward scattering method further comprises a window sheet, wherein the window sheet is fixed outside the air outlet end of the glass tube, so that light beams emitted by the laser assembly penetrate through the window sheet and then irradiate the measuring area.
3. The forward-scattering particle measurement chamber structure of claim 2, wherein:
the particle measuring chamber structure of the forward scattering method also comprises a connecting seat with a hollow structure; one end of the connecting seat is hermetically connected with the air outlet end of the glass tube, and the hollow structure of the connecting seat is communicated with the inside of the glass tube; the window sheet is fixed in the hollow structure of the connecting seat; and an air outlet positioned between the glass tube and the window sheet is also arranged in the connecting seat.
4. The forward-scattering particle measurement chamber structure of claim 3, wherein:
the glass tube is detachably connected with the connecting seat.
5. The forward-scattering particle measurement chamber structure of claim 4, wherein:
the air outlet end of the glass tube is embedded into a groove of the connecting seat.
6. The forward-scattering particle measurement chamber structure of claim 3, wherein:
a compressed air inlet for entering compressed air is further formed in one side, close to the window sheet, of the connecting seat, so that an air curtain for protecting the window sheet is formed in the connecting seat; the compressed air inlet is positioned between the window sheet and the air outlet.
7. The forward-scattering particle measurement chamber structure of claim 1, wherein:
the glass tube is horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564755.5U CN211927626U (en) | 2020-04-16 | 2020-04-16 | Particulate matter measuring chamber structure of forward scattering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020564755.5U CN211927626U (en) | 2020-04-16 | 2020-04-16 | Particulate matter measuring chamber structure of forward scattering method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211927626U true CN211927626U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020564755.5U Active CN211927626U (en) | 2020-04-16 | 2020-04-16 | Particulate matter measuring chamber structure of forward scattering method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211927626U (en) |
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2020
- 2020-04-16 CN CN202020564755.5U patent/CN211927626U/en active Active
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