CN2095420U - Portable Photoelectric Smoke Concentration Detector - Google Patents
Portable Photoelectric Smoke Concentration Detector Download PDFInfo
- Publication number
- CN2095420U CN2095420U CN 91202747 CN91202747U CN2095420U CN 2095420 U CN2095420 U CN 2095420U CN 91202747 CN91202747 CN 91202747 CN 91202747 U CN91202747 U CN 91202747U CN 2095420 U CN2095420 U CN 2095420U
- Authority
- CN
- China
- Prior art keywords
- lens
- transmitter
- smoke
- receiver
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000779 smoke Substances 0.000 title abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000005622 photoelectricity Effects 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 claims description 3
- 238000002310 reflectometry Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 230000003189 isokinetic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a portable photoelectricity smoke and dust concentration detection appearance, it uses the photoelectric technology on concentration detection. A laser is used as a transmitter (2); a silicon photocell is used as a receiver (11); the filter (4) and the lens (6) are used as the control device of the light power. When the light beam passes through the smoke to be detected, the light energy is attenuated due to the absorption and scattering of the smoke particles, the attenuation amount of the light energy and the smoke concentration form a certain proportional relation, and a purpose-made display meter (12) is used for displaying the smoke concentration. The emitter (2), the sampler (10) and the receiver (11) are skillfully integrated, so that the device is simple, convenient and practical, is rare in practice, can finish the detection task by one person alone in 10 minutes, and achieves the purposes of saving people and labor, and being high in speed and accurate.
Description
The utility model relates to discontinuously a kind of or detects the instrument of the dust concentration of various flues continuously.
Traditional isokinetic sampling's method test dust concentration of current domestic and international employing, whole sampling process comprises: preparation, mensuration, sample analysis, calculating, brief summary five parts.The instrument of preparing has a smoke dust sampling complete set, inclination microbarograph, V-type pressure gauge, vacuum pump, sylphon barometer, thermometer, stopwatch, sebific duct (φ=8-10mm) 20-30 rice, 0-400 ℃ baking oven, ten thousand/balance.Dope flow velocity, temperature, static pressure and the water capacity of each sampled point in the flue at the scene, according to the diameter of the sampling mouth of selecting for use, calculate isokinetic sampling's flow then.Detecting a dust concentration needs 3-4 position technician, just can finish.
The purpose of this utility model for saving manpower, is saved instrument just, shortens detection time, releases a kind of portable photoelectricity dust concentration detector.
The purpose of this utility model is achieved in that with helium-neon laser makees transmitter; Make receiver with silicon photocell; Making concentration with special gauge outfit shows; Do control device with optical filtering, lens.Because laser instrument has high directivity, high brightness, high monochromaticity, it is the most suitable to select for use it to make transmitter, but its output power instability then is its deadly defect, also is the principal element that influences accuracy of detection.For overcoming the fluctuation of power output, this utility model has adopted the physical features that certain proportionate relationship is arranged between the reflectivity of lens and the transmissivity.When laser output power changes, reflective power also changes, the size that reflective power changes, directly react the size of transmission power, control the deflection angle of optical filtering again with it, the luminous power that makes it to enter sampling thief becomes fixed value, and then has remedied the accuracy of detection error that causes because of the laser output power shakiness.
The utility model detector uses very easyly, only sampling thief is inserted in the flue, turns on the power switch, and can directly demonstrate concentration value from special concentration indicator gauge.This instrument be one long be 440 millimeters, wide be that 75 millimeters, height are 75 millimeters rectangular parallelepiped, full weight has only 2.5 kilograms, in 10 minutes, can detect the dust concentration in the flue alone effectively.
The concrete structure of utility model is provided by following enforcement and accompanying drawing thereof.
Fig. 1 is according to the portable photoelectricity dust concentration detector sectional view that the utility model proposes.
This instrument comprises metal shell (1), latter half of in the shell is equipped with a helium-neon laser as transmitter (2), it fixes the position by six identical active screws (3) on request with laser instrument, the front end of transmitter (2) is equipped with an optical filtering (4), optical filtering is fixed with the support that has active screw (5), optical filtering (4) but left and right sides deflection, front end at optical filtering is equipped with lens (6) again, lens also with the band active screw (7) support fix, be equipped with in the upper right side of lens (6) and be used for the school of reflective power of receiver lens (6) and end receiver (8), beam expanding lens (9) is positioned at the metal shell first half, be fixed on the metal outer wall with engage thread, beam expanding lens (9) is twice the light beam expansion, satisfy the requirement of sampling flue dust, to improve accuracy of detection, the device in the betal can, only need to install in order, on location interval, do not do strict demand.Sampling thief (10) is positioned at the metal shell front end, link to each other with metal shell with engage thread, sampling thief (10) is that 40 millimeters, the long aluminum pipe that is respectively 250,500,1000 millimeters constitute by diameter, and tube wall is respectively opened a rectangular slot up and down, so that flue gas is unblocked during by sampling thief.The end of sampling thief (10) is dust concentration receiver (11), it directly receives dust concentration by silicon photocell, the betal can outside also has a special concentration indicator gauge (12) and a correction indicator gauge (13), also have in addition for the luminous JD-1 Laser Power Devices (15) of laser instrument, metal shell and flue outer wall are connected and fixed with the annulus (14) that has three active screws.JD-1 Laser Power Devices (15) do not draw at Fig. 1.
Open JD-1 Laser Power Devices switch, a branch of light passes dust-contained airflow immediately, absorption and the scattering of light beam because of being subjected to smoke particle, luminous energy is decayed, the size of its damping capacity just becomes certain proportionate relationship with the dust concentration size, can directly show tested dust concentration value with a kind of special concentration indicator gauge (12).
Claims (2)
1, a kind of by metal shell, transmitter, optical filtering, lens, beam expanding lens, sampling thief, receiver, the photoelectricity dust concentration detector that main devices such as indicator gauge are formed, it is characterized in that adopting and have high directivity, high brightness, the helium-neon laser of high monochromaticity is made transmitter (2), can think that luminous power does not change with distance in 5 meters, optical filtering (4) and lens (6) close fit, control device as transmitter (2) output power, beam expanding lens (9) is twice the light beam expansion, improve accuracy of detection, indicator gauge (12) is a kind of special dial, can directly show tested dust concentration, sampling thief (10) two ends respectively with metal shell (1), receiver (11) connects, and forms a kind of not only easy but also practical detecting instrument.
2, according to the device of claim 1, it is characterized in that utilizing the reflectivity of lens (6) and the proportionate relationship of transmissivity, control the deflection angle of optical filtering (4), the luminous power that makes it to enter sampling thief (10) becomes fixed value, this special role, remedy the detection error that fluctuates in time and cause because of the transmitter output power, further improved the accuracy of detection of this instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202747 CN2095420U (en) | 1991-02-23 | 1991-02-23 | Portable Photoelectric Smoke Concentration Detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202747 CN2095420U (en) | 1991-02-23 | 1991-02-23 | Portable Photoelectric Smoke Concentration Detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2095420U true CN2095420U (en) | 1992-02-05 |
Family
ID=49917344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91202747 Expired - Lifetime CN2095420U (en) | 1991-02-23 | 1991-02-23 | Portable Photoelectric Smoke Concentration Detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2095420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405351A (en) * | 2019-06-29 | 2019-11-05 | 东莞泰升玻璃有限公司 | A kind of glass surface laser carving method |
-
1991
- 1991-02-23 CN CN 91202747 patent/CN2095420U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405351A (en) * | 2019-06-29 | 2019-11-05 | 东莞泰升玻璃有限公司 | A kind of glass surface laser carving method |
| CN110405351B (en) * | 2019-06-29 | 2021-04-27 | 东莞泰升玻璃有限公司 | Glass surface laser engraving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |