CN205958421U - Sheath air current protection device and have its concentration detector - Google Patents
Sheath air current protection device and have its concentration detector Download PDFInfo
- Publication number
- CN205958421U CN205958421U CN201620901479.0U CN201620901479U CN205958421U CN 205958421 U CN205958421 U CN 205958421U CN 201620901479 U CN201620901479 U CN 201620901479U CN 205958421 U CN205958421 U CN 205958421U
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- protection device
- shell body
- outlet
- sheath air
- chamber
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- 238000001514 detection method Methods 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 4
- 238000000149 argon plasma sintering Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Abstract
The utility model relates to a sheath air current protection device and have its concentration detector. Particularly, the utility model provides a sheath air current protection device, it includes: inject the cavity that has along its length direction extension in the shell body, shell body, central through -hole and a plurality of equipartition in the central through -hole outlying hole of flow equalizing has been seted up to the baffle on, the baffle sets up in the cavity and the length direction of perpendicular to shell body to separate the cavity for being used for receiving the cushion chamber of protection gas and the play air cavity that is used for discharge protection gas, with the sample gas pipe, the length direction that the shell body is followed to the sample gas pipe extends, and passes the central through -hole of baffle, configures the transport sample gas into. Furthermore, the utility model also provides a concentration detector who has this sheath air current protection device. Through using the protection gas bag to wrap up in the sample gas, can prevent that sample gas direct injection is to the detecting tube to completely cut off the direct contact of sample gas with the detecting tube, and then the protection detecting tube etc..
Description
Technical field
The utility model is related to particle concentration detection technique field in gas, more particularly, to a kind of sheath air-flow protection device
And there is its concentration detector.
Background technology
At present, in sucking the related various scientific researches of toxicity, more particularly human health harmful substance is ground
Study carefully, such as PM2.5 etc., due to can not directly or can not first the mankind be tested, so often animal used as test to be used is carried out
Expose to suck and evaluate.Therefore, animal exposing device has extensively in industry, agricultural, medical science, environmental pollution and military science research
General application.For the Concentration Testing of the sample gas in the exposure chamber of existing animal, need sample gas to be extracted from exposure interior, so
Detected on special large-scale equipment afterwards, pipeline is long, and equipment is more complicated, for the detection commonly using now
Device, structure as shown in Figure 1, including cylindrical detection pipe 20 and for calculating, the display device 30 of display density etc., detection
Air inlet 21 and gas outlet 22 are provided with the perisporium of pipe.Inventor finds that during using sample gas easily causes detector
Pollution damage, the service life of detector is short.
Utility model content
The utility model is intended to overcome the problem of the easy contaminated damage of existing detector, provides a kind of sheath air-flow protection
Device and the concentration detector with it, it is prevented from the pollution of sample gas and damages concentration detector.
For this reason, the utility model provides a kind of sheath air-flow protection device, it includes：
Shell body, defines the cavity extending along its length in shell body；
Dividing plate, described dividing plate offers center through hole and multiple equal discharge orifice being distributed in described center through hole periphery, institute
State dividing plate to be arranged in described cavity and the length direction perpendicular to described shell body, described cavity is divided into for receiving
The cushion chamber of shielding gas and the outlet chamber for discharging described shielding gas；With
Sample tracheae, described sample tracheae extends along the length direction of described shell body, and passes through the center through hole of described dividing plate,
It is configured to convey sample gas.
Further, the outlet of described sample tracheae be located in described outlet chamber or with the outlet of described outlet chamber be in same
In plane.
Further, described shell body and described dividing plate are integrally formed.
Further, the diameter with diameter greater than described outlet chamber of described cushion chamber.
Further, described shell body offers the gas access being communicated to described cushion chamber side wall；
Described sheath air-flow protection device also includes closing cock, is arranged at one end away from described dividing plate of described cushion chamber.
Further, described sheath air-flow protection device also includes sliding shoe, offers thereon perpendicular to described shell body
The sliding chamber of length direction, and two holes being coaxially disposed and connecting described sliding chamber；Described shell body inserts a described hole
Hole, and the outlet of described outlet chamber is in described sliding chamber.
Further, described sheath air-flow protection device also includes escape pipe, and it inserts another described hole, and its import position
In described sliding chamber.
Further, the periphery wall of described shell body and described escape pipe all offers seal groove, each described sealing
It is provided with O-ring seal in groove.
Further, the inwall of described sliding shoe offers two seal grooves, two described seal grooves are located at described two
It is provided with O-ring seal in the both sides of individual hole, and each described seal groove.
The utility model additionally provides a kind of concentration detector, and it includes：
Optical detection apparatus, it utilizes forward light scattering principle to detect the concentration of particle in gas, and has detection pipe, institute
The both sides stating the perisporium of detection pipe offer air inlet and gas outlet respectively, and described air inlet and described gas outlet are coaxially disposed；
With
Any of the above-described kind of sheath air-flow protection device, described shell body inserts described air inlet, and the outlet of described outlet chamber
In described air inlet.
Sheath air-flow protection device of the present utility model and there is it concentration detector in because using shielding gas (as clean
Air) parcel sample gas, sample gas can be prevented to be directly injected in detection pipe, completely cut off the directly contact of sample gas and detection pipe, and then
Protection detection pipe etc..
Brief description
Describe in detail more of the present utility model specifically real hereinafter with reference to the accompanying drawings by way of example, and not by way of limitation
Apply example.In accompanying drawing, identical reference denotes same or similar part or part.It should be appreciated by those skilled in the art that
These accompanying drawings are not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic diagram of existing detector；
Fig. 2 is the schematic diagram of the sheath air-flow protection device according to one embodiment of the utility model；
Fig. 3 is the schematic cross sectional views of sheath air-flow protection device shown in Fig. 2；
Fig. 4 is the schematic diagram of the concentration detector according to one embodiment of the utility model.
Specific embodiment
Purpose, technical scheme and advantage for making the utility model embodiment are clearer, below in conjunction with accompanying drawing to tool
Body embodiment is described in detail.
Fig. 2 is the schematic diagram of the sheath air-flow protection device 100 according to one embodiment of the utility model；Fig. 3 is
The schematic cross sectional views of the device of sheath air-flow protection shown in Fig. 2 100.As shown in Figures 2 and 3, the utility model embodiment provides
A kind of sheath air-flow protection device 100, this sheath air-flow protection device 100 may include shell body 40, dividing plate 50 and sample tracheae 60.Shell
The cavity extending along its length is defined in body 40.Center through hole is offered on dividing plate 50 and multiple is distributed in center through hole
The equal discharge orifice of periphery, dividing plate 50 is arranged in cavity and the length direction perpendicular to shell body 40, by cavity be divided into for
Receive the cushion chamber 42 of shielding gas and the outlet chamber 43 for discharging shielding gas.Sample tracheae 60 prolongs along the length direction of shell body 40
Stretch, and pass through the center through hole of dividing plate 50, be configured to convey sample gas.
The sheath air-flow protection device 100 of the utility model embodiment when using, for example, is coordinated with the detector shown in Fig. 1
Use, shell body 40 can be inserted in the air inlet 21 of the detection pipe 20 of detector shown in Fig. 1, then simultaneously to cushion chamber 42 and sample
It is passed through shielding gas and sample gas in tracheae 60.Shielding gas can be by multiple equal discharge orifices evenly into going out after buffering in cushion chamber 42
Air cavity 43, and it is distributed evenly in the periphery of sample tracheae 60.After the sample air-flow in sample tracheae 60 goes out, shielding gas is located at sample gas
Periphery flows simultaneously into the air inlet 21 of the detection pipe 20 of detector shown in Fig. 1, then flows out the detection of detector shown in Fig. 1 simultaneously
The gas outlet 22 of pipe 20, you can flowed in the detection pipe 20 of detector shown in Fig. 1 with being interpreted as that shielding gas is wrapped in sample gas.Protect
Shield gas is preferably pure air and the flow velocity of shielding gas is preferably equal with the flow velocity of sample gas.Shielding gas does not affect particle in sample gas
The concentration of thing etc., is contacted with the detection pipe 20 of detector shown in Fig. 1 prevented also from sample gas, damages detection pipe.Certainly, this practicality is new
Type sheath air-flow protection device 100 also apply be applicable in other types of detector.
In some embodiments of the present utility model, the outlet of sample tracheae 60 be located in outlet chamber 43 or with outlet chamber 43
Outlet is in same plane.Shell body 40 and dividing plate 50 are integrally formed.The diameter with diameter greater than outlet chamber 43 of cushion chamber 42.
The gas access 41 being communicated to cushion chamber 42 side wall is offered on shell body 40；Sheath air-flow protection device 100 may also include closing
Plug 70, is arranged at one end away from dividing plate 50 of cushion chamber 42.
In some embodiments of the present utility model, in order to ensure that shell body 40 is effectively and rapidly installed on detection pipe,
And after detection terminates, rapidly dismounting is preserved, and the sheath air-flow protection device 100 of this embodiment also includes sliding shoe
80.The sliding chamber of the length direction perpendicular to shell body 40 is offered on sliding shoe 80, and two are coaxially disposed and connect sliding chamber
Hole；Shell body 40 inserts a hole, and the outlet of outlet chamber 43 is located in sliding chamber.Further, sheath air-flow protection dress
Put 100 and also include escape pipe 90, it inserts another hole, and its import is located in sliding chamber.When using, sliding shoe 80 passes through to slide
Chamber is set in detection pipe, and shell body 40 inserts in a hole of sliding shoe 80, and the outlet of outlet chamber 43 is located at detection pipe
In air inlet；Escape pipe 90 inserts in another hole of sliding shoe 80, and the import of escape pipe 90 is located at the gas outlet of detection pipe
Interior.
In order to further ensure sealing property, the periphery wall of shell body 40 and escape pipe 90 all offers seal groove,
It is provided with O-ring seal in each seal groove.Two seal grooves are offered on the inwall of sliding shoe 80, two seal grooves are located at
It is provided with O-ring seal in the both sides of two circular cavities, and each seal groove.
Fig. 4 is the schematic diagram of the concentration detector according to one embodiment of the utility model.As shown in figure 4, this
Utility model embodiment additionally provides a kind of concentration detector, and it includes the sheath in optical detection apparatus and any of the above-described embodiment
Air-flow protection device 100.This optical detection apparatus is the concentration detecting particle in gas using light scattering principle.Specifically, should
Optical detection apparatus has detection pipe 210, and the both sides of the perisporium of detection pipe 210 offer air inlet and gas outlet, air inlet respectively
Mouth and gas outlet are coaxially disposed.The shell body 40 of sheath air-flow protection device 100 inserts air inlet, and the outlet of outlet chamber 43 is located at
In air inlet.
The above is only preferred embodiment of the present utility model it is noted that common skill for the art
For art personnel, on the premise of without departing from the utility model principle, any improvements and modifications made also should be regarded as this reality
With new protection domain.
Claims (10)
1. a kind of sheath air-flow protection device is it is characterised in that include：
Shell body, defines, in described shell body, the cavity extending along its length；
Dividing plate, described dividing plate offers center through hole and multiple equal discharge orifice being distributed in described center through hole periphery, described every
Plate is arranged in described cavity and the length direction perpendicular to described shell body, and described cavity is divided into for receiving protection
The cushion chamber of gas and the outlet chamber for discharging described shielding gas；With
Sample tracheae, described sample tracheae extends along the length direction of described shell body, and passes through the center through hole of described dividing plate, configuration
Become conveying sample gas.
2. sheath air-flow protection device according to claim 1 it is characterised in that
The outlet of described sample tracheae is located in described outlet chamber or is in same plane with the outlet of described outlet chamber.
3. sheath air-flow protection device according to claim 1 it is characterised in that
Described shell body and described dividing plate are integrally formed.
4. sheath air-flow protection device according to claim 1 it is characterised in that
The diameter with diameter greater than described outlet chamber of described cushion chamber.
5. sheath air-flow protection device according to claim 1 it is characterised in that
The gas access being communicated to described cushion chamber side wall is offered on described shell body；
Described sheath air-flow protection device also includes closing cock, is arranged at one end away from described dividing plate of described cushion chamber.
6. sheath air-flow protection device according to claim 1 is it is characterised in that also include：
Sliding shoe, offers the sliding chamber of the length direction perpendicular to described shell body thereon, and two are coaxially disposed and connect
The hole in described sliding chamber；Described shell body inserts a described hole, and the outlet of described outlet chamber is located in described sliding chamber.
7. sheath air-flow protection device according to claim 6 is it is characterised in that also include：
Escape pipe, it inserts another described hole, and its import is located in described sliding chamber.
8. sheath air-flow protection device according to claim 7 it is characterised in that
All offer seal groove on the periphery wall of described shell body and described escape pipe, in each described seal groove, be provided with annular
Sealing ring.
9. sheath air-flow protection device according to claim 6 it is characterised in that
Two seal grooves are offered on the inwall of described sliding shoe, two described seal grooves are located at the both sides of described two holes,
And it is provided with O-ring seal in each described seal groove.
10. a kind of concentration detector is it is characterised in that include：
Optical detection apparatus, it utilizes light scattering principle to detect aerocolloidal concentration, and described optical detection apparatus has detection pipe,
The both sides of the perisporium of described detection pipe offer air inlet and gas outlet respectively, and described air inlet and described gas outlet coaxially set
Put；With
Sheath air-flow protection device any one of claim 1 to 9, described shell body inserts described air inlet, and described
The outlet of outlet chamber is located in described air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901479.0U CN205958421U (en) | 2016-08-18 | 2016-08-18 | Sheath air current protection device and have its concentration detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620901479.0U CN205958421U (en) | 2016-08-18 | 2016-08-18 | Sheath air current protection device and have its concentration detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958421U true CN205958421U (en) | 2017-02-15 |
Family
ID=57976332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620901479.0U Expired - Fee Related CN205958421U (en) | 2016-08-18 | 2016-08-18 | Sheath air current protection device and have its concentration detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205958421U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198095A (en) * | 2020-09-27 | 2021-01-08 | 山东诺方电子科技有限公司 | Particle sensor sheath gas protective structure |
| JP2022535160A (en) * | 2019-08-13 | 2022-08-04 | ティーエスアイ インコーポレイテッド | Curtain flow design of optical chamber |
-
2016
- 2016-08-18 CN CN201620901479.0U patent/CN205958421U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022535160A (en) * | 2019-08-13 | 2022-08-04 | ティーエスアイ インコーポレイテッド | Curtain flow design of optical chamber |
| JP7214038B2 (en) | 2019-08-13 | 2023-01-27 | ティーエスアイ インコーポレイテッド | Curtain flow design of optical chamber |
| US11604122B2 (en) | 2019-08-13 | 2023-03-14 | Tsi Incorporated | Curtain flow design for optical chambers |
| CN112198095A (en) * | 2020-09-27 | 2021-01-08 | 山东诺方电子科技有限公司 | Particle sensor sheath gas protective structure |
| CN112198095B (en) * | 2020-09-27 | 2022-11-01 | 山东诺方电子科技有限公司 | Particle sensor sheath gas protective structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 |