CN211426186U - Novel laser front scattering smoke dust instrument - Google Patents
Novel laser front scattering smoke dust instrument Download PDFInfo
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- CN211426186U CN211426186U CN201922036918.2U CN201922036918U CN211426186U CN 211426186 U CN211426186 U CN 211426186U CN 201922036918 U CN201922036918 U CN 201922036918U CN 211426186 U CN211426186 U CN 211426186U
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- 239000000428 dust Substances 0.000 title claims abstract description 17
- 239000000779 smoke Substances 0.000 title claims abstract description 16
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 9
- 241001330002 Bambuseae Species 0.000 claims abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 9
- 239000011425 bamboo Substances 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims abstract description 4
- 238000005485 electric heating Methods 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 8
- 230000008033 biological extinction Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 239000004071 soot Substances 0.000 claims 6
- 239000000835 fiber Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004164 analytical calibration Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a novel laser front scattering smoke and dust appearance, including light source control device, an instrument probe section of thick bamboo, detection zone and receiving arrangement, light source control device includes dustcoat and major control system board, be equipped with the electric plate on the dustcoat, the fan, ventilation hole and fretwork support, be equipped with the laser source between the fretwork support, be equipped with the cavity between dustcoat and the light source control device, laser source end-to-end connection light source monitor, the major control system board is connected to the light source monitor, be equipped with laser receiver on the major control system board, receiving arrangement is equipped with the receiver, the laser after the scattering before the smoke and dust is received to the receiver, optic fibre is connected to the receiver, the laser receiver is connected to the optic fibre other end, the detection zone. The utility model discloses a laser is measured to the one way, reduces the technological requirement, and real-time supervision light source power reduces the undulant influence of light source, adopts a large amount of hollow out construction, increases substantially the radiating efficiency, improves the measuring accuracy.
Description
Technical Field
The utility model relates to a check out test set technical field, concretely relates to laser front scattering smoke and dust detection device.
Background
The laser front scattering technology is generally used for measuring low-concentration smoke dust at present, and has the characteristics of high precision, quick response and the like. Due to the weak forward scatter signal, the interference has a large influence on the measurement signal, especially the power variation of the laser emitting light source directly leads to the deviation of the received data. The current common practice of laser front scattering instruments is to use dual optical paths for measurement, arrange a spectroscope in front of a laser source, divide the laser source into two parallel measurement optical paths and calibration optical paths, and the instrument is calibrated periodically through the calibration optical paths during operation to judge the laser emission power change and the optical path attenuation. The method has high requirements on the precision of the equipment and the double light paths, the parallelism of the double light paths must be good, the process is complicated, the change of the laser emission power cannot be measured in real time, and the error cannot be corrected in real time.
Disclosure of Invention
In order to solve the problems, the utility model aims at providing an adopt novel laser front scattering smoke and dust appearance of single light path simplifies the light path, reduces the technology degree of difficulty, can the real-time supervision light source, in time revises measured data, and promotes the radiating effect greatly, guarantees instrument electronic component's normal operating.
The utility model adopts the technical proposal that:
a novel laser front scattering smoke dust instrument comprises a light source control device, an instrument probe barrel, a detection area and a receiving device which are connected in sequence, wherein the light source control device comprises an outer cover and a main control system board, the main control system board is arranged in the outer cover, two hollowed-out supports which are perpendicular to the main control system board and are relatively parallel to each other are arranged in the outer cover, the hollowed-out supports are fixedly connected with the main control system board, a laser source is arranged between the hollowed-out supports, an electric heating plate is arranged on the outer cover and at the same central axis with the main control system board, a fan is arranged below the electric heating plate in parallel, the electric heating plate is electrically connected with the fan and the main control system board, when the temperature is low, the main control system board normally operates under the heating of the heating plate, ventilation holes are arranged in the middle parts of two sides of the main control system board, and a cavity is arranged between the outer, when the laser source is detected, air in the outer cover is blown by the fan to flow in the cavity in an accelerating mode through the hollow support, heat transfer between the air in the outer cover and outside air is promoted, the heat dissipation effect is improved, normal operation of electronic elements on the main control system board is guaranteed, the tail end of the laser source is connected with the light source monitor, the light source monitor is connected with the main control system board, the light source monitor monitors the power of a transmitting light source in real time, measurement data are corrected in real time, the influence of light source fluctuation on the measurement data is guaranteed to be compensated, the main control system board is provided with the laser receiver, the receiver is arranged in the receiving device, the receiver receives laser which is emitted from the laser source and sequentially penetrates through the instrument probe barrel and the detection area, and the laser enters the receiver after being scattered by smoke dust in the detection area, the receiver is connected with optic fibre, the optic fibre other end is connected laser receiver, the detection zone is equipped with calibration prism, be equipped with the reflector plate parallel relatively in the calibration prism, just the reflector plate for laser slope sets up, and the calibration light passes through after the reflector plate twice reflection be on a parallel with the incident light and jet out and get into the receiver.
Preferentially, be equipped with the condensing lens on the receiver, antifog dust-proof membrane has been plated on the condensing lens surface, is convenient for protect the lens not receive the influence of liquid drop and dust.
Preferentially, the laser source adopts 650nm red laser light source, the dustcoat with instrument probe section of thick bamboo junction is equipped with the light source support, the laser source is located on the light source support, the support with instrument probe section of thick bamboo handing-over department is equipped with light source protection lens and surface and has plated antifog dust-proof membrane, is convenient for protect the light source.
Preferentially, the laser source outside is equipped with the heat insulating board, the heat insulating board adopts the polytetrafluoroethylene material, and effective isolated heat-conduction is to the influence of laser source.
Preferentially, an instrument probe section of thick bamboo is close to the light source control device outside is equipped with mounting flange, and the instrument of being convenient for is installed on the measuring point, mounting flange with between the light source control device the opposition is equipped with calibration filter hole and instrument protection wind access mouth on the instrument probe section of thick bamboo, and the instrument passes through instrument protection wind access mouth inserts clean air as instrument protection wind, reduces the temperature of major control system board, the detection zone both sides with be equipped with the breach on the same horizontal direction of laser source, the light source that supplies passes through.
Preferably, the lower part of the collimating prism is provided with a pillar.
Preferentially, receiving arrangement has the arc support, receiver fixed mounting in on the arc support, the inside arc hollow structure that is of arc support, optic fibre is followed the inside passing of arc support, the arc support corresponds the pillar position is equipped with the recess, calibration prism passes through the pillar embedding in the recess, the instrument calibration of being convenient for is used, and it is convenient to dismantle, receiving arrangement keeps away from calibration prism side just uses the laser light path to be equipped with the deluster as center department, is convenient for carry out the diffuse reflection and eliminates remaining laser after the receiver receives.
The utility model has the advantages that:
1. only one-way laser is used during measurement, and because the light path is simplified, a beam splitter prism is prevented from being used to keep two parallel paths, so that the process requirement is greatly reduced;
2. the power of the emission light source is monitored in real time through the light source monitor, the measurement data is corrected in real time, and the influence of light source fluctuation on the measurement data is ensured to be compensated;
3. the special calibration prism is used for calibrating the instrument, so that the measuring light path can be conveniently translated and directly enters the receiver to finish the light path calibration of the instrument;
4. adopt hollow out construction to instrument light source controlling means, be equipped with the cavity in the dustcoat, the cooperation fan for circulation of air accelerates, accelerates the heat transfer, promotes the radiating efficiency.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the collimating prism of the present invention;
fig. 3 is a front view of the present invention cover.
Labeled as: 1. the light source control device comprises a light source control device, 11 a housing, 111 a vent hole, 12 a laser source, 121 a thermal baffle, 122 a light source support, 123 a light source protection lens, 13 a light source monitor, 14 a laser receiver, 141 an optical fiber, 15 a main control system board, 16 a hollow support, 17 a cavity, 18 an electric heating plate, 19 a fan, 2 an instrument probe barrel, 21 a mounting flange, 22 a calibration filter hole, 23 an instrument protection air access port, 3 a detection zone, 31 a calibration prism, 311 a reflection lens, 32 a support column, 4 a receiving device, 41 a receiver, 411 a condenser, 42 an extinction device, 43 an arc support and 431 grooves.
Detailed Description
As shown in fig. 1-3, a novel laser front scattering smoke dust instrument comprises a light source control device 1, an instrument probe cylinder 2, a detection area 3 and a receiving device 4 which are connected in sequence, wherein the light source control device 1 comprises an outer cover 11 and a main control system board 15, the main control system board 15 is arranged in the outer cover 11, two hollow supports 16 which are perpendicular to the main control system board 15 and are relatively parallel to each other are arranged in the outer cover 11, the hollow supports 16 are fixedly connected with the main control system board 15, a laser source 12 is arranged between the hollow supports 16, an electric heating plate 18 is arranged on the outer cover 11 at the same central axis position with the main control system board 15, a fan 19 is arranged below the electric heating plate 18 in parallel, the electric heating plate 18 and the main control system board 15 are electrically connected, when the temperature is low, the main control system board 15 is heated by the electric heating plate 18 to normally operate, a vent hole 111 is arranged in the middle part of two sides of the outer cover 11 perpendicular to the, when the laser source 12 is convenient to detect, air in the outer cover 11 is blown by the fan 19 to flow in the cavity 17 through the hollow support 16 in an accelerated manner, so that heat transfer between the air in the outer cover 11 and outside air is promoted, the heat dissipation effect is improved, and the normal operation of electronic elements on the main control system board 15 is ensured, the tail end of the laser source 12 is connected with the light source monitor 13, the light source monitor 13 is connected with the main control system board 15, the light source monitor 13 monitors the power of a transmitting light source in real time, and corrects measurement data in real time, so that the influence of light source fluctuation on the measurement data is compensated, the main control system board 15 is provided with the laser receiver 14, the receiver 41 is arranged in the receiving device 4, the receiver 41 receives laser which is transmitted from the laser source 12 and sequentially passes through the instrument probe cylinder 2 and the detection area 3, the other end of the optical fiber 141 is connected with the laser receiver 14, the detection area 3 is provided with a calibration prism 31, a reflector 311 which is parallel to the optical fiber is arranged in the calibration prism 31, the reflector 311 is inclined relative to the laser, and the calibration light is reflected twice by the reflector 311 and then is emitted into the receiver 41 in parallel to the incident light.
Specifically, as shown in fig. 1, the receiver 41 is provided with a collecting lens 411, and the surfaces of the collecting lens 411 and the light source protection lens 123 are plated with an anti-fog and anti-dust film, so as to protect the lenses from liquid drops and dust.
Specifically, as shown in fig. 1, the laser source 12 is a 650nm red laser source, a light source support 122 is disposed at a connection position of the outer cover 11 and the instrument probe cylinder 2, the laser source 12 is disposed on the light source support 122, and a light source protection lens 123 is disposed at a connection position of the support and the instrument probe cylinder 2.
Specifically, as shown in fig. 1, a thermal insulation plate 121 is disposed outside the laser source 12, and the thermal insulation plate 121 is made of teflon, so as to effectively isolate the influence of thermal conduction on the laser source 12.
Specifically, as shown in fig. 1, a mounting flange 21 is arranged on the outer side of the instrument probe barrel 2 close to the light source control device 1, a calibration filter hole 22 and an instrument protection air access port 23 are oppositely arranged on the instrument probe barrel 2 between the mounting flange 21 and the light source control device 1, and notches are arranged on two sides of the detection region 3 and the same horizontal direction of the laser source 12.
Specifically, as shown in fig. 1, a support column 32 is provided below the collimating prism 31.
Specifically, as shown in fig. 1, an arc-shaped support 43 is arranged below the receiving device 4, the receiver 41 is fixedly mounted on the arc-shaped support 43, the arc-shaped support 43 is an arc-shaped hollow structure, the optical fiber 141 passes through the arc-shaped support 43, a groove 431 is formed in the arc-shaped support 43 corresponding to the position of the support 32, the calibration prism 31 is embedded into the groove 431 through the support 32, and the receiving device 4 is far away from the calibration prism 31 side and is provided with an extinction device 42 by taking a laser light path as a center, so that diffuse reflection is performed to eliminate residual laser light after the receiver 41 receives the laser.
As shown in fig. 1-3, the working process of this embodiment is as follows:
during measurement, an instrument is installed on a fixed measurement point through an installation flange 21, measurement gas of smoke enters a detection area 3 and enters an instrument probe cylinder 2 through notches on two sides, a main control system board 15 drives a laser source 12 to emit laser in a constant power mode, meanwhile, the power of the emitted light source is monitored in real time through a light source monitor 13 so as to correct measurement data in real time, the measurement light enters the detection area 3 from the notches through a light source protection lens 123 and the instrument probe cylinder 2, the measurement light is scattered around when encountering smoke particles in the detection area 3, front scattered laser with the maximum laser intensity enters a receiver 41 through a condenser 411, redundant scattered light is received by an extinction device 42 and then undergoes diffuse reflection extinction, the laser in the receiver 41 is transmitted to a laser receiver 14 through an optical fiber 141, the laser receiver 14 converts optical signals into electric signals, and the main control system board 15 continues to process to, assuming that a reference value of the light source during operation is S0 and a light source light intensity signal detected in real time is S1, the light source change rate is S% -S1-S0/S0, at this time, an initial smoke value calculated according to the received signal is R0, and a final corrected smoke value R1 is R0(1+ S%); during calibration, the calibration prism 31 is inserted into the groove 431, and the measurement light is shifted by the calibration prism 31 and then directly enters the receiver 41 to match the filter and pass through the calibration filter hole 22 to complete the calibration of the meter.
When the temperature is lower, the electric heating plate 18 and the fan 19 work to promote the circulation of hot air in the outer cover 11 and ensure the normal operation of each electronic element of the main control system board 15, when the main control system board operates at normal temperature, external air enters the light source control device 1 through the fan hole, the vent hole 111 and the instrument protection air access port 23, and under the action of the fan 19, the circulation of the external air passing through the hollow bracket 16 in the cavity 17 is accelerated, the heat generated during the transmission of laser emission is accelerated, and the influence on the normal operation of the control device caused by the temperature rise is avoided.
The utility model has the advantages that: the single-path measurement laser is adopted, the process requirement is reduced, a large number of hollow structures, cavity designs and ventilation openings are adopted, air circulation and heat transfer are accelerated, the heat dissipation efficiency is greatly improved, the monitor monitors the power of the light source in real time during measurement, the influence of light source fluctuation on measurement data is avoided, fog prevention and dust prevention are achieved, and the measurement accuracy is improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a novel laser front scattering smoke and dust appearance which characterized in that: the device comprises a light source control device, an instrument probe barrel, a detection area and a receiving device which are connected in sequence, wherein the light source control device comprises an outer cover and a main control system board, the main control system board is arranged in the outer cover, two hollowed-out supports are arranged in the outer cover in a manner of being perpendicular to the main control system board and in relative parallel, the hollowed-out supports are fixedly connected with the main control system board, a laser source is arranged between the hollowed-out supports, an electric heating plate is arranged on the outer cover at the same central axis with the main control system board, a fan is arranged below the electric heating plate in parallel, the electric heating plate is electrically connected with the fan and the main control system board, ventilation holes are arranged in the outer cover perpendicular to the middle parts of two sides of the main control system board, a cavity is arranged between the outer cover and the main control system board and the hollowed-out supports, the laser detector is characterized in that a laser receiver is arranged on the main control system board, a receiver is arranged in the receiving device, the receiver receives laser which is emitted by the laser source and sequentially penetrates through the instrument probe barrel and the detection area, the laser enters the receiver after being scattered by smoke dust in the detection area, the receiver is connected with an optical fiber, the other end of the optical fiber is connected with the laser receiver, the detection area is provided with a calibration prism, and relatively parallel reflection lenses are arranged in the calibration prism and are obliquely arranged relative to the laser.
2. The novel laser front scattering soot instrument as claimed in claim 1, wherein: the receiver is provided with a condenser lens, and the surface of the condenser lens is plated with an anti-fog and anti-dust film.
3. The novel laser front scattering soot instrument as claimed in claim 1, wherein: the laser source adopts 650nm red laser light source, the dustcoat with instrument probe section of thick bamboo junction is equipped with the light source support, the laser source is located on the light source support, the support with instrument probe section of thick bamboo handing-over department is equipped with light source protection lens and the surface has plated antifog dustproof film.
4. The novel laser front scattering soot instrument as claimed in claim 3, characterized in that: and a heat insulation plate is arranged on the outer side of the laser source and made of polytetrafluoroethylene.
5. The novel laser front scattering soot instrument as claimed in claim 1, wherein: an instrument probe section of thick bamboo is close to the light source control device outside is equipped with mounting flange, mounting flange with between the light source control device the opposition is equipped with calibration filter hole and instrument protection wind access mouth on the instrument probe section of thick bamboo, the detection zone both sides with be equipped with the breach on the same horizontal direction of laser source.
6. The novel laser front scattering soot instrument as claimed in claim 1, wherein: and a support column is arranged below the calibration prism.
7. The novel laser front scattering soot instrument as claimed in claim 6, wherein: the receiving device is provided with an arc-shaped support, the receiver is fixedly installed on the arc-shaped support, an arc-shaped hollow structure is arranged inside the arc-shaped support, the optical fiber penetrates through the arc-shaped support, the arc-shaped support corresponds to the supporting column, a groove is formed in the position of the supporting column, the calibrating prism is embedded into the groove through the supporting column, and the receiving device is far away from the side of the calibrating prism and is provided with an extinction device by taking a laser light path as a center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036918.2U CN211426186U (en) | 2019-11-22 | 2019-11-22 | Novel laser front scattering smoke dust instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036918.2U CN211426186U (en) | 2019-11-22 | 2019-11-22 | Novel laser front scattering smoke dust instrument |
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| Publication Number | Publication Date |
|---|---|
| CN211426186U true CN211426186U (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922036918.2U Active CN211426186U (en) | 2019-11-22 | 2019-11-22 | Novel laser front scattering smoke dust instrument |
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| Country | Link |
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| CN (1) | CN211426186U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903551A (en) * | 2021-02-05 | 2021-06-04 | 顺德职业技术学院 | Laser dust sensor and automatic compensation method thereof |
| CN113670782A (en) * | 2021-08-17 | 2021-11-19 | 安荣信科技(南京)有限公司 | Laser smoke dust instrument |
-
2019
- 2019-11-22 CN CN201922036918.2U patent/CN211426186U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903551A (en) * | 2021-02-05 | 2021-06-04 | 顺德职业技术学院 | Laser dust sensor and automatic compensation method thereof |
| CN113670782A (en) * | 2021-08-17 | 2021-11-19 | 安荣信科技(南京)有限公司 | Laser smoke dust instrument |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240605 Address after: Building 502, No. 8-B, No. 10 Xinfeng Road, Jiangning Development Zone, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING BORY AUTOMATION TECHNOLOGY Co.,Ltd. Country or region after: China Patentee after: Du Yu Address before: 210000 68 Sheng Tai Road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING BORY AUTOMATION TECHNOLOGY Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |