CN107576606A - Pop one's head in separable airborne particle counter - Google Patents
Pop one's head in separable airborne particle counter Download PDFInfo
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- CN107576606A CN107576606A CN201710812273.XA CN201710812273A CN107576606A CN 107576606 A CN107576606 A CN 107576606A CN 201710812273 A CN201710812273 A CN 201710812273A CN 107576606 A CN107576606 A CN 107576606A
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- sampling
- particle counter
- optical fiber
- airborne particle
- air channels
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Abstract
The present invention relates to airborne particle counter, to realize airborne particle counter can be separated with main frame, that can detecting, precision is high in real time, separable airborne particle counter of popping one's head in, comprising host machine part, sampling sensor part, wherein：Host machine part includes LASER Light Source, fiber coupler, control process unit, and sampling sensor part includes lens group, air channels sampling system, photodetector system, data collecting system；Semiconductor laser light resource in main frame, it is connected by fiber coupler with optical fiber；The spatial beam that semiconductor laser light resource is sent focuses on through fiber coupler to be injected optical fiber and spatial beam is introduced into lens group by optical fiber, for the parallel beam incident that lens group becomes spatial beam to have good uniformity into air channels sampling systematic survey chamber, air channels sampling system detectio is transferred to data collecting system into measurement chamber after the optical signal of KPT Scatter is converted into electric signal.Present invention is mainly applied to the design and manufacture of airborne particle counter.
Description
Technical field
The present invention relates to airborne particle counter, is mainly used under adverse circumstances (such as containing strong oxidizing property gaseous environment
Under) efficiently/airborne particle counter for stopping leakage in the roof of super high efficient filter scanning, specifically, it is related to the separable dust particle of probe
Counter.
Background technology
Airborne particle counter has important application in the detection of efficiently/super high efficient filter.【Patent：Highly effective air
Filters scan is stopped leakage in the roof device and method of stopping leakage in the roof, application number：201410345441.5 publication number：CN 104111144 A】In sweep
One, the downstream sampling head for retouching device of stopping leakage in the roof is fixed on the sliding block on mobile holder, and passes through the dirt outside sampling conduit and device
Angstrom corpuscular counter is connected, when physics aerosol flows through sampling pipe, due to aerosol in itself possessed diffusion, sedimentation,
The characteristics such as collision, coalescence can lose in sample lines, cause the aerosol concentration that aerosol sampler samples than reality
It is low, sampling pipe is longer, and error is bigger.Also, the time is needed because gas moves to airborne particle counter from thief hatch, dirt
The data shown on angstrom corpuscular counter be not the True Data at this time point, it is necessary to flow velocity in sampling pipe and
The length of sampling pipe calculates forward, can not way detect in real time, Realtime Alerts.In order to improve accuracy of detection, detection in real time is realized,
It is necessary to design the airborne particle counter that a kind of sampling probe separates with machine body.
The content of the invention
For overcome the deficiencies in the prior art, the present invention is directed to propose it is that a kind of sampling probe can separate with main frame, can
Airborne particle counter detecting in real time, precision is high.The technical solution adopted by the present invention is separable dust particle of popping one's head in
Counter, comprising host machine part, sampling sensor part, wherein：Host machine part includes LASER Light Source, fiber coupler, control
Processing unit, sampling sensor part include lens group, air channels sampling system, photodetector system, data collecting system；Main frame
In semiconductor laser light resource, be connected by fiber coupler with optical fiber；The spatial beam warp that semiconductor laser light resource is sent
Fiber coupler, which focuses on, to be injected optical fiber and spatial beam is introduced into lens group by optical fiber, and spatial beam is become to have good by lens group
The parallel beam incident of good uniformity is into air channels sampling systematic survey chamber, air channels sampling system detectio particle into measurement chamber
The optical signal of scattering simultaneously converts optical signal into electric signal, and by electric signal transmission to data collecting system, data collecting system
Connected by data line and the control process unit of host machine part.
Optical fiber is clamped by optical fiber and is being fixed on main frame, on sampling sensor respectively.
Air channels sampling system is a vavuum pump, and under test gas is sucked it from liquid passage inlet and dissipated by negative pressure caused by vavuum pump
Penetrate in chamber, the outlet of liquid passage inlet is designed using Laval-cavity nozzle, to prevent the appearance of turbulent flow and backflow, while ensures photosensitive area
Air velocity it is as far as possible equal；Real-time flow information is passed to control process list by the flow sensor in air channels sampling system
Member, vavuum pump is signaled to by control process unit come to control sampling flow be designed sampling flow.
The features of the present invention and beneficial effect are：
The present invention utilizes optical fiber and data wire by the light source host machine part of airborne particle counter and sampling sensor part
Separate so that the volume of sampling sensor part greatly reduces, and can be followed on mobile holder in order to be stopped leakage in the roof in scanning
Support moves together.Simultaneously because long sampling pipe when not having tradition use before sampling sensor, sample gas are directly entered
Sampling cavity so that error greatly reduces caused by using sampling pipe；Sample gas walking distance is equally greatly reduced, and is adopted
Sample the data obtained is essentially real time data, while precision is stopped leakage in the roof in raising scanning, can also realize real-time leak source alarm.
Brief description of the drawings：
Fig. 1 counter structure block schematic illustrations.
Symbol description is as follows in figure：
101st, main frame, 102, LASER Light Source, 103, fiber coupler, 104, control process unit, 201, sampling sensor,
202nd, lens group, 203, air channels sampling system, 204, photodetector system, 205, data collecting system, 301, optical fiber, 302, number
According to transmission line, the clamping of 303,304 optical fiber.
Fig. 2 air-channel system schematic diagrames.In figure：2031st, liquid passage inlet, 2032, jet, 2033, scattering chamber, 2034 gas circuits go out
Mouthful, 2035, flow sensor, 2036, vavuum pump.
Embodiment
The technical solution adopted by the present invention is the separable airborne particle counter of one kind probe, comprising host machine part, to adopt
Sample Sensor section, wherein：Host machine part includes LASER Light Source, fiber coupler, control process unit, optical fiber clamping, sampling
Sensor section includes optical fiber clamping, lens group, air channels sampling system, photodetector system, data collecting system.In main frame
Semiconductor laser light resource, it is connected by fiber coupler with optical fiber, and is connected by the lens group in optical fiber and sampling sensor portion
Connect.The data collecting system of sampling sensor part is connected by data line and the control process unit of host machine part.Light
Fine a diameter of 0.125mm, and be separately fixed at by optical fiber clamping in the discrepancy hole position of main frame, sampling sensor.
The present invention is further described with instantiation below in conjunction with the accompanying drawings.
Referring to Fig. 1, the spatial beam that semiconductor laser light resource 102 is sent focuses on injection optical fiber 301 by fiber coupler 103
In, light beam is introduced lens group 202 by optical fiber from fiber coupler 103, and lens group 202 becomes light beam have good uniformity
Parallel beam incident measured into air channels sampling system 203 in chamber, photodetector system 204 detect KPT Scatter light letter
Number and convert optical signal into electric signal, and electric signal transmission is passed through to data collecting system 205, data collecting system 205
The signal that chamber is measured in air channels sampling system 203 is transferred to control process unit 103, control process list by data line 302
Member 103 shows related data or transfers data to computer terminal.
Diameter 0.125mm optical fiber 301 is being fixed on main frame 101, sampling sensor respectively by optical fiber clamping 303,304
On 201, it can prevent sampling sensor from will not damage in movement to fracture.
As shown in Fig. 2 under test gas is sucked scattering chamber 2033 by negative pressure caused by vavuum pump 2036 from liquid passage inlet 2031
In, the outlet of liquid passage inlet 2031 is designed using Laval-cavity nozzle, to prevent the appearance of turbulent flow and backflow, while ensures photosensitive area
Air velocity it is as far as possible equal.Real-time flow information is passed to control process unit 104 by flow sensor, by control process
Unit 104 is signaled to vavuum pump 2036 to control sampling flow be designed sampling flow.
The present invention separates the main frame of airborne particle counter with sampling sensor, so can be by sampling sensor
Volume accomplish very little, be easy in different occasion uses, and reduce the error of sampling, realize real-time dust particle
Count.
Fig. 2 is that the scanning of common efficient/super high efficient filter is stopped leakage in the roof the set of device of platform, the Y mobile holders of scan table
Tested filter 401 is put among 402, the sampling sensor 201 of small size is fixed with X mobile holders.Sampling sensing 201
Air inlet is connected to sampling head 401, and is connected by optical fiber 301 and data line 302 with the main frame 101 of distant place.
Bibliography：
[1] wear soldier, Yuan Yinnan, wear sensor [P] Jiangsu of possible trouble optical particle counters：CN102564928A,
2012-07-11。
[2] Sun Jiyong, Liang Fengfei, Shen Weidong, Zhou great Nong, Tang Yang micro liquid grain counter chip [P] Jiangsu：
CN202994617U,2013-06-12。
Claims (3)
- The separable airborne particle counter 1. one kind is popped one's head in, it is characterized in that, separable airborne particle counter of popping one's head in, comprising Host machine part, sampling sensor part, wherein：Host machine part includes LASER Light Source, fiber coupler, control process unit, adopts Sample Sensor section includes lens group, air channels sampling system, photodetector system, data collecting system；Semiconductor in main frame LASER Light Source, it is connected by fiber coupler with optical fiber；The spatial beam that semiconductor laser light resource is sent is through fiber coupler Focus on and inject optical fiber and spatial beam is introduced into lens group by optical fiber, lens group becomes spatial beam have good uniformity Parallel beam incident into air channels sampling systematic survey chamber, air channels sampling system detectio to measurement chamber in KPT Scatter light letter Number and convert optical signal into electric signal, and electric signal transmission is passed to data collecting system, data collecting system by data Defeated line and the control process unit of host machine part connect.
- 2. separable airborne particle counter of popping one's head in as claimed in claim 1, it is characterized in that, optical fiber passes through optical fiber clamping point Main frame be not fixed on it, on sampling sensor.
- 3. separable airborne particle counter of popping one's head in as claimed in claim 1, it is characterized in that, air channels sampling system is one Under test gas is sucked it from liquid passage inlet and scattered in chamber by vavuum pump, negative pressure caused by vavuum pump, and the outlet of liquid passage inlet uses Laval-cavity nozzle designs, and to prevent the appearance of turbulent flow and backflow, while ensures that the air velocity of photosensitive area is as far as possible equal；Gas circuit is adopted Real-time flow information is passed to control process unit by the flow sensor in sample system, and signal is sent by control process unit To vavuum pump come to control sampling flow be designed sampling flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812273.XA CN107576606A (en) | 2017-09-11 | 2017-09-11 | Pop one's head in separable airborne particle counter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710812273.XA CN107576606A (en) | 2017-09-11 | 2017-09-11 | Pop one's head in separable airborne particle counter |
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| Publication Number | Publication Date |
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| CN107576606A true CN107576606A (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710812273.XA Pending CN107576606A (en) | 2017-09-11 | 2017-09-11 | Pop one's head in separable airborne particle counter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111989559A (en) * | 2018-04-11 | 2020-11-24 | 赛博光学公司 | Inline particle sensor |
Citations (6)
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| US5530551A (en) * | 1991-09-06 | 1996-06-25 | Commonwealth Scientific And Industrial Research | Method for apparatus for determining measurement parameter of a fibrous object and whether the object is a valid object |
| CN102564928A (en) * | 2012-01-09 | 2012-07-11 | 南通大学 | Sensor for optical particle counters |
| CN202994617U (en) * | 2012-12-14 | 2013-06-12 | 江苏苏净集团有限公司 | Chip of micro liquid particle counter |
| CN103364316A (en) * | 2013-06-29 | 2013-10-23 | 天津大学 | Multi-refractive index particle size multi-point measurement device and method based on optical fiber connection |
| CN104111144A (en) * | 2014-07-18 | 2014-10-22 | 中国科学院上海光学精密机械研究所 | High-efficiency air filter scanning leak-detection device and method |
| CN106053351A (en) * | 2016-07-06 | 2016-10-26 | 北京新叶能源科技有限公司 | In-situ flue gas online measuring device |
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2017
- 2017-09-11 CN CN201710812273.XA patent/CN107576606A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5530551A (en) * | 1991-09-06 | 1996-06-25 | Commonwealth Scientific And Industrial Research | Method for apparatus for determining measurement parameter of a fibrous object and whether the object is a valid object |
| CN102564928A (en) * | 2012-01-09 | 2012-07-11 | 南通大学 | Sensor for optical particle counters |
| CN202994617U (en) * | 2012-12-14 | 2013-06-12 | 江苏苏净集团有限公司 | Chip of micro liquid particle counter |
| CN103364316A (en) * | 2013-06-29 | 2013-10-23 | 天津大学 | Multi-refractive index particle size multi-point measurement device and method based on optical fiber connection |
| CN104111144A (en) * | 2014-07-18 | 2014-10-22 | 中国科学院上海光学精密机械研究所 | High-efficiency air filter scanning leak-detection device and method |
| CN106053351A (en) * | 2016-07-06 | 2016-10-26 | 北京新叶能源科技有限公司 | In-situ flue gas online measuring device |
Non-Patent Citations (1)
| Title |
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| 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会: "《GB/T 6167-2007 尘埃粒子计数器性能试验方法》", 1 February 2008 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111989559A (en) * | 2018-04-11 | 2020-11-24 | 赛博光学公司 | Inline particle sensor |
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Application publication date: 20180112 |