CN2155017Y - Fume photoelectric detecting probe - Google Patents
Fume photoelectric detecting probe Download PDFInfo
- Publication number
- CN2155017Y CN2155017Y CN 93211786 CN93211786U CN2155017Y CN 2155017 Y CN2155017 Y CN 2155017Y CN 93211786 CN93211786 CN 93211786 CN 93211786 U CN93211786 U CN 93211786U CN 2155017 Y CN2155017 Y CN 2155017Y
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- CN
- China
- Prior art keywords
- parallel light
- light tube
- lens
- lens barrel
- dust
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- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model belongs to a photoelectric detecting probe measuring the fume concentration. The fume photoelectric detecting probe comprises opposed a light emitting collimator and a light receiving collimator, the positive lenses of the collimators are installed in respective lens cones, a semiconductor infrared light emitting tube and a semiconductor receiving device are respectively arranged on the focal point s of the two positive lenses, three dustproof plates and a dustproof cover are installed outside the positive lenses in the lens cones, the light emitting collimator is communicated with a wind chamber, the two ends of a wind pipe are respectively communicated with the light receiving collimator and the wind chamber, the wind in the wind chamber is blew out from the light passing holes of the dustproof plates and the dustproof cover, the fume is stopped flying towards the positive lenses, the contamination of the fume to the optical elements are prevented, and the utility model can continuously detect for a long time.
Description
The utility model belongs to the photoelectric probe of measuring dust concentration.
The optic probe of the measurement dust concentration of development is not owing to prevent the device that optical element stains now, and continuous detecting fails formally to use for a long time.
The purpose of this utility model provides and a kind ofly can prevent that optical element from staiing, the photoelectric probe of the measurement dust concentration of continuous detecting for a long time.
The utility model is that relative luminous parallel light tube and the positive lens that receives parallel light tube are installed in separately the lens barrel, the dust excluding plate that there is light hole at spaced-apart center is installed in the outside of positive lens in each lens barrel, simultaneously with ventilation unit logical gentle breeze in each lens barrel, wind outwards blows around two positive lenss, prevented that so effectively flue dust from guaranteeing again that to the positive lens diffusion enough light is by measuring, gentle breeze enters lens barrel by the air compartment that the afterbody of luminous parallel light tube has dc fan, with a ventilation duct air compartment is communicated with the afterbody that receives parallel light tube, make gentle breeze enter the lens barrel that receives parallel light tube, gentle breeze blows out by the light hole of the dust excluding plate in the lens barrel.
The utility model comprises a luminous parallel light tube and receives parallel light tube, with connecting link they are linked together, and make the positive lens of luminous parallel light tube relative with the positive lens that receives parallel light tube, the center is at same axis, positive lens focus at luminous parallel light tube is installed a semiconductor infraluminescence pipe, a semiconductor is installed in the lens barrel that receives parallel light tube is received device, this element is installed in the focus place that receives the parallel light tube positive lens, and feature of the present utility model is: the positive lens of luminous parallel light tube is installed in luminous parallel light tube with lens frame respectively with the positive lens that receives parallel light tube and receives in the lens barrel of parallel light tube; Lens frame is to have the lens folder of some air vents to constitute around there is a step through hole at two middle parts, and positive lens is installed in the step through hole, is clipped between two lens folders; Three dust excluding plates of some centimetres of mutual edge distances are mutually all installed in the outside of positive lens and the outside that receives positive lens in the lens barrel of parallel light tube in the lens barrel of luminous parallel light tube, and the internal diameter of the external diameter of dust excluding plate and place lens barrel matches, and there is light hole at the middle part of dust excluding plate; At the bright dipping end of luminous parallel light tube lens barrel and the light inputting end that receives the parallel light tube lens barrel convex hull shape dust cap that an external diameter and lens barrel internal diameter match is installed respectively, there is light hole at the middle part of dust cap, the convex surface of two dust caps is relative, the radial section of dust cap is an arc, it is streamlined that a radial section is arranged, skew dust cap center, dust cap top; An air compartment is communicated with the lens barrel of luminous parallel light tube, and the tail end of this lens barrel is installed in the cover plate of air compartment, and a dc fan is installed at the air inlet place in the air compartment, at the air inlet of air compartment filter paper or sponge is installed, and air compartment has a wire guide; The tail end that receives the parallel light tube lens barrel is installed the bonnet that there is air vent at a middle part, and the accent wind lid of an air vent is arranged above the inboard air vent of bonnet place installs one; One ventilation duct is arranged, its end from outside be connected the bonnet that receives parallel light tube and be communicated with bonnet, the cover plate that the other end is connected air compartment is communicated with air compartment; The lead that is connected with semiconductor reception device stretches out from the wire guide of air compartment through air vent, the ventilation duct of bonnet, and the lead that is connected with semiconductor infraluminescence pipe stretches out from wire guide; The outside that 2-4 connecting link is clipped in two lens barrels is fixed as one with screw and lens barrel.
For between each dust excluding plate easy for installation spacer ring being arranged, each dust excluding plate and spacer ring are one.
Employed positive lens can be used simple lens, cemented doublet, three balsaming lenss.
Filter paper or sponge can be clipped between the two-layer silk screen, are fixed on the blower fan baffle plate of air vent, are installed in the air inlet of air compartment.
The light hole diameter of dust cap is 4-6mm.
During measurement the utility model is installed in the connecting tube of fly-ash separator and chimney, the utility model is communicated with testing apparatus, start dc fan and blow out gentle breeze by each through hole, send parallel light tube and send the reception of parallel infrared light reception parallel light tube, the light intensity that the big more reception parallel light tube of the concentration of coal dust, flue dust is received is more little, the light intensity that receives has reflected coal dust, the concentration of flue dust, receive device by semiconductor light intensity is converted to the electricity number of laughing at, measure the dust concentration at tested position by the electricity number of laughing at of output.
Because the utility model is taked said structure, luminous parallel light tube and the positive lens that receives parallel light tube are installed in separately the lens barrel, and three dust excluding plate and dust caps that light hole is arranged are installed in the outside of positive lens in each lens barrel, by air-supply arrangement gentle breeze is outwards blown out through light hole around positive lens, so the utility model can prevent effectively that coal dust, flue dust from flying to positive lens, prevent the contamination of flue dust to optical element, thereby the long-term continuous detecting of energy, and make the photodetection of dust concentration simple; Rotate the camera lens folder and can adjust joint air quantity size, it is fixing to mix up the back, and accommodation is wider, also can be used for the cement mill to the detection to coal powder density in the air of airborne cement flour concentration, colliery.
Detailed structure of the present utility model is provided by embodiment and accompanying drawing thereof.
Fig. 1 is the longitudinal sectional view of the utility model embodiment.
Fig. 2 is the cut-open view along A-A direction among Fig. 1.
Fig. 3 is the cut-open view along B-B line among Fig. 1.
Fig. 1, Fig. 2 has described the detailed structure of the utility model embodiment, the positive lens of luminous parallel light tube (26) is installed on the picture frame of being made up of two lens folders (27), lens folders (27) have 6 air vents (28) on every side and are installed in the lens barrel (1), there are 3 middle parts that the dust excluding plate of light hole (2) is arranged in the lens barrel (1), (3), (4), the convex hull shape dust cap (5) of an evagination is installed at the bright dipping end of lens barrel (1), there is light hole at anti-lid (5) middle part, the positive lens (10) that receives parallel light tube is installed on the picture frame of being made up of two lens folders (11), lens folders (11) have 6 air vents (12) to be installed in the lens barrel (21) on every side, the dust excluding plate (7) that there is light hole at 3 middle parts is installed in lens barrel (21), (8), (9), the convex hull shape dust cap (6) of an evagination is installed at the light inputting end of lens barrel (21), there is a light hole at this lid middle part, dust excluding plate (2), (3), (4), (7), (8), (9) be one all with adjacent spacer ring, 2 connecting links (22), (23) be clipped in the outside of lens barrel (1) and (21), 12 screws (25) are their edge joints one, at the focus place of positive lens (10) semiconductor is installed and is received device (13), this element is installed on the support (14), the afterbody of lens barrel (21) is equipped with bonnet (15), there is air vent (16) at this lid middle part, there is one to transfer wind lid (19) in bonnet (15) inboard, transfer wind lid (19) that air vent (18) is arranged, the cover plate (30) that the afterbody of lens barrel (1) is installed in air compartment (34) upward connects as one with volution (29), semiconductor infraluminescence pipe (37) is installed on the support (38) of the interior volution of air compartment (34) (29), air compartment (34) has air inlet (33), at air inlet (33) installed inside dc fan (31), at air inlet (33) blower fan baffle plate (32) is installed, filter paper is clipped in is installed between the two-layer silk screen on the blower fan baffle plate (32), this baffle plate has air vent, filter paper guarantees to enter the air cleaner of air compartment, ventilation duct (20) one ends are connected bonnet (15) with fastening volution (17) and are communicated with air vent (16), the cover plate (30) that the other end is connected air compartment (34) is communicated with air compartment, the lead (24) that semiconductor receives device (13) connection passes from wire guide (35) by ventilation duct (20), the lead (36) that is connected with semiconductor infraluminescence pipe (37) also passes from wire guide (35), and the size that the present embodiment semiconductor receives device and semiconductor infraluminescence pipe is respectively 7 * 7mm
2With φ 5mm.
When present embodiment is installed in tested pipeline, see Fig. 3 along the dust cap (5) of flue dust flow direction, the radial cross-section of (6), streamlining, flue dust resistance to flow and the pressure of executing to the dust cap center are reduced in the center that dust cap is departed from top (39), (40).
Positive lens of present embodiment (26) and positive lens (10) can adopt simple lens, cemented doublet, three balsaming lenss.
Distance between present embodiment lens barrel (1) and the lens barrel (21) is 200mm, and the distance between the utility model two lens barrels can strengthen, reduce according to tested spot size.
(17) be fastening volution.
Claims (3)
1, a kind of photoelectric probe of measuring dust concentration, it comprises a luminous parallel light tube and receives parallel light tube, with connecting link they are linked together, and make the positive lens of luminous parallel light tube relative with the positive lens that receives parallel light tube, the center is at same axis, positive lens focus at luminous parallel light tube is installed a semiconductor infraluminescence pipe, a semiconductor is installed in the lens barrel that receives parallel light tube is received device, this element is installed in the focus place that receives the parallel light tube positive lens, it is characterized in that:
The positive lens of-luminous parallel light tube is installed in luminous parallel light tube with lens frame respectively with the positive lens that receives parallel light tube and receives in the lens barrel of parallel light tube;
-lens frame is to have the lens folder of some air vents to constitute around there is a step through hole at two middle parts, and positive lens is installed in the step through hole, is clipped between two lens folders;
-three dust excluding plates of some centimetres of mutual edge distances are mutually all installed in the outside of positive lens and the outside that receives positive lens in the lens barrel of parallel light tube in the lens barrel of luminous parallel light tube, and the internal diameter of the external diameter of dust excluding plate and place lens barrel matches, and there is light hole at the middle part of dust excluding plate;
-at the bright dipping end of luminous parallel light tube lens barrel and the light inputting end that receives the parallel light tube lens barrel convex hull shape dust cap that an external diameter and lens barrel internal diameter match is installed respectively, there is light hole at the middle part of dust cap, the convex surface of two dust caps is relative, the radial section of dust cap is an arc, it is streamlined that a radial section is arranged, skew dust cap center, dust cap top;
-one air compartment is communicated with the lens barrel of luminous parallel light tube, and the tail end of this lens barrel is installed in the cover plate of air compartment, and a dc fan is installed at the air inlet place in the air compartment, at the air inlet of air compartment filter paper or sponge is installed, and air compartment has a wire guide;
The tail end of-reception parallel light tube lens barrel is installed the bonnet that there is air vent at a middle part, and the accent wind lid of an air vent is arranged above the inboard air vent of bonnet place installs one;
-ventilation duct arranged, its end from outside be connected and receive the bonnet of parallel light tube and being communicated with of bonnet, the cover plate that the other end is connected air compartment is communicated with air compartment;
-receiving the lead that device is connected with semiconductor stretches out from the wire guide of air compartment through air vent, the ventilation duct of bonnet, and the lead that is connected with semiconductor infraluminescence pipe stretches out from wire guide;
The outside that-2-4 connecting link is clipped in two lens barrels is fixed as one with screw and lens barrel.
2, according to the photoelectric probe of the described measurement dust concentration of claim 1, it is characterized in that:
---filter paper or sponge are clipped between the two-layer silk screen, are fixed on the blower fan baffle plate of air vent, are installed in the air inlet of air compartment.
3, according to the photoelectric probe of claim 1,2 described measurement dust concentrations, the light hole diameter that it is characterized in that dust cap is 4-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211786 CN2155017Y (en) | 1993-05-04 | 1993-05-04 | Fume photoelectric detecting probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93211786 CN2155017Y (en) | 1993-05-04 | 1993-05-04 | Fume photoelectric detecting probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2155017Y true CN2155017Y (en) | 1994-02-02 |
Family
ID=33793293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93211786 Expired - Fee Related CN2155017Y (en) | 1993-05-04 | 1993-05-04 | Fume photoelectric detecting probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2155017Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061898A (en) * | 2014-06-16 | 2014-09-24 | 苏州理欧电子科技有限公司 | Automatic detection device for accuracy of horizontal angle measurement |
| CN113640242A (en) * | 2021-08-23 | 2021-11-12 | 北京信息科技大学 | Portable liver total reserve function detector and method based on infrared light absorption |
-
1993
- 1993-05-04 CN CN 93211786 patent/CN2155017Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061898A (en) * | 2014-06-16 | 2014-09-24 | 苏州理欧电子科技有限公司 | Automatic detection device for accuracy of horizontal angle measurement |
| CN113640242A (en) * | 2021-08-23 | 2021-11-12 | 北京信息科技大学 | Portable liver total reserve function detector and method based on infrared light absorption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |