CN107086054A - A kind of aerosol fillter based on microfluid inertial impactor principle - Google Patents
A kind of aerosol fillter based on microfluid inertial impactor principle Download PDFInfo
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- CN107086054A CN107086054A CN201710167723.4A CN201710167723A CN107086054A CN 107086054 A CN107086054 A CN 107086054A CN 201710167723 A CN201710167723 A CN 201710167723A CN 107086054 A CN107086054 A CN 107086054A
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- plate
- outer cover
- orifice plate
- inlet hole
- outlet orifice
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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Abstract
The invention discloses the aerosol fillter based on microfluid inertial impactor principle, including：Entrance outer cover, outlet outer cover, inlet hole plate, outlet orifice plate, abutment sleeve, O-ring seal, screw bolt and nut；Inclined hole aperture corresponding setting in the way of turning on the inclined hole aperture on outlet orifice plate on inlet hole plate, forms the filtration channel that 126 angle thetas are 110 °.Operation principle of the present invention is simple, volume is small, can in more not sliding filter paper, do not influence to realize the collection to aerosol under accident conditions on the premise of containment pressure decay rate.The present invention has been started is applied to the precedent that nuclear power station aerosol is collected based on microfluid inertial impactor technology.
Description
Technical field
The present invention relates to nuclear engineering and nuclear technology field, containment when more particularly to for nuclear power station generation major accident
The filtration art of interior aerosol.
Background technology
Aerosol is also referred to as gas diffuser system, is to be disperseed by liquid or solid particle, be suspended in gas medium and shape
Into colloidal dispersion.The composition of aerosol is divided into two parts --- dispersed phase and decentralized medium, wherein, dispersed phase refers to hanging
Floating particulate matter, size is 10-3-102The micron order of magnitude, and decentralized medium is the gas of carrying particulate matter.
Concentration is very low and in equilibrium-like under normal circumstances for naturally radioactive aerosol in nuclear power station inner atmosphere environment
State, but when there is serious nuclear accident, the aerosol load in containment will be raised significantly, will once being released in atmospheric environment
Have serious consequences, increase the danger of accident, therefore corresponding filtering adsorpting device need to be used to avoid such a radioaerosol
Spread into air.
Aerosol filtration device in current nuclear power station mainly has high efficiency particle air filter, venturi scrubber, sand heap mistake
The several types such as filter, active carbon filter, although they can carry out certain filtering and collection to radioactive dust, it is more
For network structure, it is necessary to timing change filter medium, after a certain period of use time can aerosol deposition dramatically increase flowing resistance
Power, therefore hinder the pressure release after nuclear accident in container.In addition, it is one that filter medium is not only changed under the conditions of high radioactivity
Individual technical barrier, and used filter medium can turn into new solid radiation or liquid, cause new pollution.
Therefore the release that radioactive grain has no effect on containment internal pressure can be filtered by being badly in need of a kind of filter, simultaneously
New pollution is not increased.
The content of the invention
Can be not it is an object of the invention to provide a kind of aerosol fillter based on microfluid inertial impactor principle
On the premise of producing new radwaste, the particle of micron-scale can just be collected by being not required to change filter paper, so that it may effectively mistake
Radioaerosol in the case of filter nuclear power plant accident in containment, while nor affecting on the release of pressure in containment.
To achieve the above object, the present invention provides a kind of aerosol fillter based on microfluid inertial impactor principle,
The aerosol fillter based on microfluid inertial impactor principle includes：Entrance outer cover, outlet outer cover, inlet hole plate, go out
Oral pore plate, abutment sleeve, O-ring seal, screw bolt and nut；The entrance outer cover, O-ring seal, inlet hole plate, O-shaped sealing
Circle, outlet orifice plate, O-ring seal and outlet outer cover are realized by the cooperation of abutment sleeve and bolt and nut to be sequentially tightly connected；
The angle of the inclined hole and horizontal plane on the 70-224 inclined holes being parallel to each other, the inlet hole plate is offered on the inlet hole plate
For 45 °~60 °, the diameter d of the inclined hole on the inlet hole plate is the length a of the inclined hole on 0.5~2mm, the inlet hole plate
For 2.5~10mm, the distance of center circle on the inlet hole plate between two adjacent inclined holes is 1-3mm；Opened on the outlet orifice plate
Provided with the 70-224 inclined holes being parallel to each other, the angle of inclined hole and horizontal plane on the outlet orifice plate is 45 °~60 °, described
The diameter d for exporting the inclined hole on orifice plate is that the length a of the inclined hole on 0.5~2mm, the outlet orifice plate is 2.5~10mm, described
It is 1-3mm to export the distance of center circle on orifice plate between two adjacent inclined holes；Inclined hole aperture on the inlet hole plate with it is described go out
Inclined hole aperture corresponding setting in the way of turning on oral pore plate, forms the filtering that 70-224 angle theta is 90 °~120 ° and leads to
Road.
Preferably, the entrance outer cover is inThe flange sleeve structure of font, the entrance outer cover is highly 66mm；Institute
The one end for stating entrance outer cover has been wholely set ring flange, and a diameter of 85mm of ring flange, thickness are on 6mm, the ring flange
It is arranged at intervals near 6 positioning holes, the center of circle of the ring flange and is provided with 1 groove；The positioning hole of the entrance outer cover
The circle center distance of a diameter of 10mm, its center and ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover is annular
Groove, its internal diameter is 35mm, and external diameter is 41mm, and depth is 2mm, and the annular groove is used for placing O-ring seal；The entrance
10 differential manometer interfaces are provided with the barrel of outer cover, the differential manometer interface is divided into 2 groups and is separately positioned on the entrance outer cover
At the position at two ends.
Preferably, the outlet outer cover is inThe flange sleeve structure of font, the outlet outer cover is highly 66mm；Institute
The one end for stating outlet outer cover has been wholely set ring flange, and a diameter of 85mm of ring flange, thickness are on 6mm, the ring flange
It is arranged at intervals near 6 positioning holes, the center of circle of the ring flange and is provided with 1 groove；The positioning hole of the outlet outer cover
Aperture is 10mm, and the circle center distance of its center and ring flange is 30mm；Groove in the flange sleeve of the outlet outer cover is annular
Groove, its internal diameter is 35mm, and external diameter is 41mm, and depth is 2mm, and the annular groove is used for placing O-ring seal；The outlet
10 differential manometer interfaces are provided with the barrel of outer cover, the differential manometer interface is divided into 2 groups and is separately positioned on the outlet outer cover
At the position at two ends.
Preferably, the inlet hole plate is flange plate structure, and it is provided with positioning hole and groove；The inlet hole plate it is straight
Footpath is 85mm, and thickness is 4mm；The inlet hole plate is arranged at intervals with 6 positioning holes, and positioning hole and the institute of the inlet hole plate
The positioning hole stated on the ring flange of entrance outer cover is corresponding, a diameter of 10mm of the positioning hole of the inlet hole plate, its center with
The circle center distance of the inlet hole plate is 30mm；Groove on the inlet hole plate is that annular groove its internal diameter is 35mm, external diameter
For 41mm, depth is 1mm, and the annular groove is used for placing O-ring seal；Pressed inside the annular groove of the inlet hole plate
70-224 inclined hole has been placed equidistant according to hexagonal structure arrangement.
Preferably, the outlet orifice plate is flange plate structure, and it is provided with positioning hole and groove；It is described to export the straight of orifice plate
Footpath is 85mm, and thickness is 4mm；The outlet orifice plate is arranged at intervals with 6 positioning holes, and positioning hole and the institute of the outlet orifice plate
State outlet outer cover ring flange on positioning hole it is corresponding, it is described outlet orifice plate positioning hole a diameter of 10mm, its center with
The circle center distance of the outlet orifice plate is 30mm；Groove on the outlet orifice plate is annular groove, and its internal diameter is 35mm, external diameter
For 41mm, depth is 1mm, and the annular groove is used for placing O-ring seal；Pressed inside the annular groove of the outlet orifice plate
70-224 inclined hole has been placed equidistant according to hexagonal structure arrangement.
Preferably, the outlet orifice plate is identical with the structure of the inlet hole plate, and both are set in mirror-image fashion；Institute
The structure that entrance outer cover is stated with the outlet outer cover is identical, and both are connected by ring flange in mirror-image fashion.
Preferably, sealed between the entrance outer cover and the inlet hole plate by O-ring seal, and the O
Type sealing ring is arranged in the annular groove of the entrance outer cover；By O-shaped between the inlet hole plate and the outlet orifice plate
Sealing ring is sealed；And the O-ring seal is arranged on the setting of both the inlet hole plate and the outlet orifice plate mirror image
Annular groove in；And sealed between the outlet orifice plate and the outlet outer cover by O-ring seal, and it is described
O-ring seal is arranged in the annular groove of the outlet outer cover.
Preferably, the length of the abutment sleeve is 22mm, and the internal diameter of cylinder is 8mm, and external diameter is 9.8mm；The positioning
A diameter of 20mm of the bottom surface disk of sleeve, thickness is 2mm, abutment sleeve be used for the entrance outer cover, the outlet outer cover,
Position of positioning hole on the inlet hole plate and the outlet orifice plate is positioned.
Preferably, the bolt is 6 M6 types bolts and 6 matched nuts, for outer to entrance outer cover, outlet
Cover, inlet hole plate, outlet orifice plate, abutment sleeve part are fixedly connected；On the outlet orifice plate and the inlet hole plate
Micropore, can be processed using machining, laser boring or photochemistry etching；Can between the outlet orifice plate and the inlet hole plate
To be connected by flange, diffusion welding (DW) or soldering processes.
Preferably, as the length a that the diameter d of the inclined hole on the inlet hole plate is the inclined hole on 1mm, the inlet hole plate
For 5mm, the distance of center circle on the inlet hole plate between two adjacent inclined holes is to offer 126 on 2mm, the inlet hole plate
When the diameter d of inclined hole on the inclined hole being parallel to each other, and the outlet orifice plate is also 1mm, inclined hole on the outlet orifice plate
Length a is that the distance of center circle on 5mm, the outlet orifice plate between two adjacent inclined holes is also to be opened up on 2mm, the outlet orifice plate
There are 126 inclined holes being parallel to each other, the maximum fluid flow of the aerosol fillter is 35.7L/min；When the ingate
The diameter d of inclined hole on plate is that the length a of the inclined hole on 0.5mm, the inlet hole plate is two on 2.5mm, the inlet hole plate
Distance of center circle between individual adjacent inclined hole is to offer 224 inclined holes being parallel to each other on 1mm, the inlet hole plate, and described
When the diameter d for exporting the inclined hole on orifice plate is also 0.5mm, the length a of the inclined hole on the outlet orifice plate is 2.5mm, it is described go out
Distance of center circle on oral pore plate between two adjacent inclined holes is also to offer 224 on 1mm, the outlet orifice plate to be parallel to each other
Inclined hole, the maximum fluid flow of the aerosol fillter is 15.8L/min；As the diameter d of the inclined hole on the inlet hole plate
For 2mm, the length a of the inclined hole on the inlet hole plate is the circle on 10mm, the inlet hole plate between two adjacent inclined holes
The heart is away from the diameter that the inclined hole on 70 inclined holes being parallel to each other, and the outlet orifice plate for 3mm, is offered on the inlet hole plate
When d is also 2mm, the length a of the inclined hole on the outlet orifice plate is on 10mm, the outlet orifice plate between two adjacent inclined holes
Distance of center circle be 3mm, also offer 70 inclined holes being parallel to each other, the maximum of the aerosol fillter on the outlet orifice plate
Fluid flow is 79.1L/min.
The present invention proposes a kind of aerosol fillter based on microfluid inertial impactor principle, with performance height, work(
Consumption it is low, be quick on the draw, the low feature of cost.The device operation principle is simple, volume is small, can be changed without filter paper, not shadow
Ring the collection realized under accident conditions on the premise of containment pressure decay rate to aerosol.The present invention has started used based on microfluid
Property impactor technology be applied to the precedent that nuclear power station aerosol is collected.The present invention has the particle for being more than 1um for particle diameter simultaneously,
Collection efficiency is more than 75%, 2um particle is more than for particle diameter, collection efficiency is 100%.When air velocity is 6m/s, pressure
When being 0.407MPa by force, the pressure drop of one unit of filter is 300Pa or so advantage.
Brief description of the drawings
Fig. 1 is the schematic diagram of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 2 is the structural representation of the entrance outer cover of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 3 is the structural representation of the outlet outer cover of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 4 is the structural representation of the inlet hole plate of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 5 is the structural representation of the outlet orifice plate of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 6 is the structural representation of the abutment sleeve of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 7 is the stereogram of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 8 is the front view of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 9 is sectional views of the Fig. 8 along the aerosol fillter based on microfluid inertial impactor principle in C-C directions；
Figure 10 is the front view that aerosol fillters of the Fig. 8 based on microfluid inertial impactor principle rotates 30 degree；
Figure 11 is sectional views of the Figure 10 along the aerosol fillter based on microfluid inertial impactor principle in F-F directions；
Figure 12 is the collection efficiency and the graph of a relation of particle diameter of the aerosol fillter based on microfluid inertial impactor principle.
Embodiment
To make the purpose, technical scheme and advantage of the invention implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Embodiments of the invention are described in detail with reference to accompanying drawing for face.
In a broad embodiment of the invention：Aerosol fillter based on microfluid inertial impactor principle includes：Enter
Mouth outer cover 12, outlet outer cover 15, inlet hole plate 13, outlet orifice plate 14, abutment sleeve 10, O-ring seal, bolt 9 and nut 11；
The entrance outer cover 12, O-ring seal, inlet hole plate 13, O-ring seal, outlet orifice plate 14, O-ring seal and outlet outer cover
15 are sequentially tightly connected by the cooperation realization of abutment sleeve 10 and the nut 11 of bolt 9；70- is offered on the inlet hole plate 13
The angle of inclined hole 7 and horizontal plane on 224 inclined holes for being parallel to each other, the inlet hole plate 13 is 45 °~60 °, the entrance
The diameter d of inclined hole 7 on orifice plate 13 is that the length a of the inclined hole 7 on 0.5~2mm, the inlet hole plate 13 is 2.5~10mm, institute
It is 1-3mm to state the distance of center circle on inlet hole plate 13 between two adjacent inclined holes 7；70-224 is offered on the outlet orifice plate 14
The angle of inclined hole 7 and horizontal plane on the individual inclined hole 7 being parallel to each other, the outlet orifice plate 14 is 45 °~60 °, the outlet opening
The diameter d of inclined hole 7 on plate 14 is that the length a of the inclined hole 7 on 0.5~2mm, the outlet orifice plate 14 is 2.5~10mm, described
It is 1-3mm to export the distance of center circle on orifice plate 14 between two adjacent inclined holes 7；The aperture of inclined hole 7 on the inlet hole plate 13 with
It is described outlet orifice plate 14 on the aperture of inclined hole 7 in the way of turning on it is corresponding set, is formed 70-224 angle theta be 90 °~
120 ° of filtration channel.
The entrance outer cover 12 is inThe flange sleeve structure of font, the height of entrance outer cover 12 is 66mm；It is described enter
One end of mouthful outer cover 12 has been wholely set ring flange, a diameter of 85mm of ring flange, thickness be on 6mm, the ring flange between
1 groove is provided with every being provided near 6 positioning holes, the center of circle of the ring flange；The positioning hole 4 of the entrance outer cover 12
The circle center distance of a diameter of 10mm, its center and ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover 12 is ring
Connected in star 5, its internal diameter is 35mm, and external diameter is 41mm, and depth is 2mm, and the annular groove 5 is used for placing O-ring seal；It is described
Be provided with 10 differential manometer interfaces 6 on the barrel of entrance outer cover 12, the differential manometer interface 6 be divided into 2 groups be separately positioned on it is described
Entrance outer cover 12 is at the position at two ends.
It is described outlet outer cover 15 be inThe flange sleeve structure of font, the height of outlet outer cover 15 is 66mm；It is described go out
One end of mouthful outer cover 15 has been wholely set ring flange, a diameter of 85mm of ring flange, thickness be on 6mm, the ring flange between
1 groove is provided with every being provided near 6 positioning holes 4, the center of circle of the ring flange；The positioning hole 4 of the outlet outer cover 15
Aperture be 10mm, the circle center distance of its center and ring flange is 30mm；It is described outlet outer cover 15 flange sleeve on groove be
Annular groove 5, its internal diameter is 35mm, and external diameter is 41mm, and depth is 2mm, and the annular groove 5 is used for placing O-ring seal；Institute
10 differential manometer interfaces 6 are provided with the barrel for stating outlet outer cover 15, the differential manometer interface 6 is divided into 2 groups and is separately positioned on institute
Outlet outer cover 15 is stated at the position at two ends.
The inlet hole plate 13 is flange plate structure, and it is provided with positioning hole 4 and groove；The diameter of the inlet hole plate 13
For 85mm, thickness is 4mm；The inlet hole plate 13 is arranged at intervals with 6 positioning holes 4, and the positioning hole 4 of the inlet hole plate 13
It is corresponding with the positioning hole 4 on the ring flange of the entrance outer cover 12, the positioning hole 4 of the inlet hole plate 13 it is a diameter of
The circle center distance of 10mm, its center and the inlet hole plate 13 is 30mm；Groove on the inlet hole plate 13 is annular groove
8, its internal diameter is 35mm, and external diameter is 41mm, and depth is 1mm, and the annular groove 8 is used for placing O-ring seal；In the entrance
Inside the annular groove 8 of orifice plate 13 70-224 inclined hole 7 has been placed equidistant according to hexagonal structure arrangement.
The outlet orifice plate 14 is flange plate structure, and it is provided with positioning hole 4 and groove；The diameter of the outlet orifice plate 14
For 85mm, thickness is 4mm；The outlet orifice plate 14 is arranged at intervals with 6 positioning holes 4, and the positioning hole 4 of the outlet orifice plate 14
With it is described outlet outer cover 15 ring flange on positioning hole 4 it is corresponding, it is described outlet orifice plate 14 positioning hole 4 it is a diameter of
10mm, its center and the circle center distance of the outlet orifice plate 14 are 30mm；Groove on the outlet orifice plate 14 is annular groove
8, its internal diameter is 35mm, and external diameter is 41mm, and depth is 1mm, and the annular groove 8 is used for placing O-ring seal；In the outlet
Inside the annular groove 8 of orifice plate 14 70-224 inclined hole 7 has been placed equidistant according to hexagonal structure arrangement.
The outlet orifice plate 13 is identical with the structure of the inlet hole plate 14, and both are set in mirror-image fashion；It is described
Entrance outer cover 12 is identical with the structure of the outlet outer cover 15, and both are connected by ring flange in mirror-image fashion.
Sealed between the entrance outer cover 12 and the inlet hole plate 13 by O-ring seal, and it is described O-shaped close
Seal is arranged in the annular groove 5 of the entrance outer cover 12；Pass through O between the inlet hole plate 13 and the outlet orifice plate 14
Type sealing ring is sealed；And the O-ring seal is arranged on both the inlet hole plate 13 and the outlet orifice plate 14 mirrors
In the annular groove 8 that picture is set；And carried out between the outlet orifice plate 14 and the outlet outer cover 15 by O-ring seal
Seal, and the O-ring seal is arranged in the annular groove 5 of the outlet outer cover 15.
The length of the abutment sleeve 10 is 22mm, and the internal diameter of cylinder is 8mm, and external diameter is 9.8mm；The abutment sleeve 10
Bottom surface disk a diameter of 20mm, thickness is 2mm, and abutment sleeve 10 is used for the entrance outer cover 12, the outlet outer cover
15th, the position of positioning hole 4 on the inlet hole plate 13 and the outlet orifice plate 14 is positioned.
The bolt is 6 M6 types bolts 9 and 6 matched nuts 11, for entrance outer cover 12, outlet outer cover
15th, inlet hole plate 13, outlet orifice plate 14, the part of abutment sleeve 10 are fixedly connected；The outlet orifice plate 14 and the entrance
Micropore on orifice plate 13, can be processed using machining, laser boring or photochemistry etching；It is described outlet orifice plate 14 and it is described enter
It can be connected between oral pore plate 13 by flange, diffusion welding (DW) or soldering processes.
When the diameter d of the inclined hole on the inlet hole plate is 1mm, the length a of the inclined hole on the inlet hole plate is 5mm,
Distance of center circle on the inlet hole plate between two adjacent inclined holes is to offer 126 on 2mm, the inlet hole plate mutually to put down
When the diameter d of inclined hole on capable inclined hole, and the outlet orifice plate is also 1mm, the length a of the inclined hole on the outlet orifice plate is
Distance of center circle on 5mm, the outlet orifice plate between two adjacent inclined holes is also to offer 126 on 2mm, the outlet orifice plate
The inclined hole being parallel to each other, the maximum fluid flow of the aerosol fillter is 35.7L/min；When oblique on the inlet hole plate
The diameter d in hole is 0.5mm, the length a of the inclined hole on the inlet hole plate be on 2.5mm, the inlet hole plate two it is adjacent
Distance of center circle between inclined hole is to offer 224 inclined holes being parallel to each other, and the outlet orifice plate on 1mm, the inlet hole plate
On the diameter d of inclined hole when being also 0.5mm, the length a of the inclined hole on the outlet orifice plate is on 2.5mm, the outlet orifice plate
Distance of center circle between two adjacent inclined holes is also to offer 224 inclined holes being parallel to each other, institute on 1mm, the outlet orifice plate
The maximum fluid flow for stating aerosol fillter is 15.8L/min；When the diameter d of the inclined hole on the inlet hole plate is 2mm, institute
The length a for stating the inclined hole on inlet hole plate is that the distance of center circle on 10mm, the inlet hole plate between two adjacent inclined holes is
Offer 70 inclined holes being parallel to each other on 3mm, the inlet hole plate, and the diameter d of the inclined hole on the outlet orifice plate is also
During 2mm, the length a of the inclined hole on the outlet orifice plate is the circle on 10mm, the outlet orifice plate between two adjacent inclined holes
The heart also offers 70 inclined holes being parallel to each other, the maximum fluid of the aerosol fillter away from for 3mm on the outlet orifice plate
Flow is 79.1L/min.
The present invention has that performance is high, low in energy consumption, be quick on the draw, the low feature of cost.The device operation principle is simple, volume
It is small, filter paper can be changed without, do not influenceing to realize the receipts to aerosol under accident conditions on the premise of containment pressure decay rate
Collection.The present invention has been started is applied to the precedent that nuclear power station aerosol is collected based on microfluid inertial impactor technology.While this hair
Bright to have the particle for being more than 1um for particle diameter, collection efficiency is more than 75%, and 2um particle, collection efficiency are more than for particle diameter
For 100%. when air velocity is 6m/s, and pressure is 0.407MPa, the pressure drop of one unit of filter is the excellent of 300Pa or so
Gesture.
Embodiments herein is described in detail below according to accompanying drawing 1-11.
As shown in figure 1, the inclined hole 7 by inlet hole plate 13 in the aerosol fillter based on microfluid inertia impact drive principle
The principle of filter is analyzed with the runner of the composition of inclined hole 7 of outlet orifice plate 14.The deflection angle θ of the runner is 110 °, one side pipe
Long a is 5mm.Radioactive particle 3 enters in aerosol fillter with airflow direction 1, when suddenly change occurs for the direction of air-flow 1
When, due to inertia, certain skew can occur for the motion mark of rail 2 of particle, and it is molten that the larger radioactive particle 3 of particle diameter can strike gas
On the inclined hole 7 of the inlet hole plate 13 of glue filter or the wall of inclined hole 7 of outlet orifice plate 14, the collection of radioactive particle 3 is realized, and
The less tracing particle of particle diameter preferably, can flow out aerosol fillter with the airflow direction 1 in runner.Main pin of the invention
The particulate of 2um in nuclear power plant containment shell is designed, therefore the particle in air-flow more than or equal to 2um can be stayed in
In filter, the particle part less than 2um is collected by filter, and another part is then with air-flow outflow filter.
As shown in Fig. 2 as the spaced set of entrance outer cover 12 has 6 positioning holes 4, a groove and 10 differential manometer interfaces
6.The aperture of the positioning hole 4 is 10mm, and the distance of center circle with circular bottom plate is 30mm；The groove is annular groove, its internal diameter
For 35mm, external diameter is 41mm, and depth is 2mm；The pressure difference that 6 apertures are 2mm is evenly distributed in bottom plate 5mm plane
Count interface 6, in bottom plate 40mm plane evenly distributedly 4 apertures be 2mm differential manometer interface 6.
As shown in figure 3, as the outlet spaced set of outer cover 15 has 6 positioning holes 4, a groove and 10 differential manometer interfaces
6.The aperture of the positioning hole 4 is 10mm, and the distance of center circle with circular bottom plate is 30mm；The groove is annular groove, its internal diameter
For 35mm, external diameter is 41mm, and depth is 2mm；The pressure difference that 6 apertures are 2mm is evenly distributed in bottom plate 5mm plane
Count interface 6, in bottom plate 40mm plane evenly distributedly 4 apertures be 2mm differential manometer interface 6.
Described entrance outer cover 12 is identical with the structure of outlet outer cover 15.
As shown in figure 4, a diameter of 85mm of inlet hole plate 13, thickness is 4mm.6 positioning holes are evenly distributed thereon
4, size and location is identical with entrance outer cover 12.Inlet hole plate 13 includes 126 inclined holes 7, and its aperture b is 1mm, with level
The angle in face is 55 °, and completely through whole inlet hole plate 13, the distance of center circle between inclined hole 7 and inclined hole 7 is 2mm；Inlet hole plate 13
On groove be annular groove 8, its internal diameter be 35mm, external diameter is 41mm, and depth is 1mm.
As shown in figure 5, a diameter of 85mm of outlet orifice plate 14, thickness is 4mm.6 positioning holes are evenly distributed thereon
4, size and location is identical with outlet outer cover 15.Export orifice plate 14 and include 126 inclined holes 7, its aperture b is 1mm, with level
The angle in face is 55 °, and completely through whole outlet orifice plate 14, the distance of center circle between inclined hole 7 and inclined hole 7 is 2mm；Export orifice plate 14
On groove be annular groove 8, its internal diameter be 35mm, external diameter is 41mm, and depth is 1mm.
Described inlet hole plate 13 is identical with the structure of outlet orifice plate 14.
As shown in fig. 6, a diameter of 20mm of the bottom plectane of abutment sleeve 10, thickness is 2mm, and the internal diameter of top cylinder is
8mm, external diameter is 9.8mm, a height of 20mm.
As shown in fig. 7, being highly 140mm based on the remote aerosol fillter of microfluid inertia impact, it includes 6 spiral shells
9,6, bolt, 11,1, the nut entrance outer cover 12,1 of abutment sleeve 10,6 inlet hole plate 13,1 outlet, 14,1 outlet of orifice plate
Outer cover 15, and between entrance outer cover 12 and inlet hole plate 13, inlet hole plate 13 and outlet orifice plate 14 between, outlet orifice plate 14
3 O-ring seals set between outlet outer cover 15.Aerosol fillter ensures the close of filter layer by O-ring seal
Feng Xing, abutment sleeve 10 makes inlet hole plate 13 and outlet orifice plate 14 in the horizontal direction without larger displacement, finally, by 6 spiral shells
All parts are fixed together by bolt attaching nut.
As described in Figure 8, its be aerosol fillter front view.
As described in Figure 9, it is sectional views of the Fig. 8 along C-C.
As described in Figure 10, it is that Fig. 8 aerosol fillters rotate 30 degree of front view.
As described in Figure 11, it is sectional views of the Figure 10 along F-F.
The aerosol fillter of the present invention includes the filtration channel that 126 deflection angles are 110 °, and maximum flow design is
35.7L/min.The particle diameter of particle that the present invention is used for collecting, which is mainly, concentrates on 1-3um, and radioaerosol is from entrance outer cover
12 porch is filtered into aerosol fillter to aerosol, and aerosol is reached after inlet hole plate 13 respectively along 126
Individual runner is to flowing down, and in porch, some particles hit the wall of the inclined hole 7 of inlet hole plate 14, most of to enter bend with air-flow
Interior, because the particulate matter quality of different-grain diameter section is different, particle diameter is different, and the impact velocity and impact distance of this particulate matter are each
Different, the small particle speed of particle diameter is high, and the big granule impact speed of particle diameter is low, due to inertia, the small particulate matter of particle diameter easily with
Air-flow flows directly out pipe and leaves runner through bounce-back outside or after shock wall, and the larger particulate matter of particle diameter then hits wall and is detained
In runner.Finally, air-flow flows out by outlet orifice plate 14 from outlet outer cover 15, realizes the mistake to the aerosol of certain particle diameter
Filter.Because inlet hole plate 13 and outlet orifice plate 14 can be dismantled arbitrarily, so after long-play, inlet hole plate 13 and outlet opening
Plate 14 can be pulled down and is rinsed with giant.
For the aerosol fillter of the design, take out one of unit and carried out simulation calculating, obtained collection effect
Rate and the relation of particle diameter are as shown in figure 12.It is more than 1um particle for particle diameter, collection efficiency is more than 75%, big for particle diameter
In 2um particle, collection efficiency is one unit of filter 100%. when air velocity is 6m/s, and pressure is 0.407MPa
Pressure drop for 300Pa or so.
By following form, to the distance of center circle between different pore size, unilateral length of tube, Kong Yukong, the hole count of inclined hole, turnover
The relation between collection rate such as angle, the maximum stream flow at angle is stated.It is 1mm for aperture, unilateral pipe range is 5mm gas
Aerosol filter, maximum flow is 35.7L/min, for the incoming particle of different-grain diameter, the aerosol mistake of different deflection angles
The collection efficiency of filter is as shown in the table：
As can be seen from the above table, 1um particle is more than for particle diameter, collection efficiency is more than 75%, is more than for particle diameter
2um particle, collection efficiency is 100%.
It is 0.5mm for aperture, unilateral pipe range is 2.5mm aerosol fillter, and it includes 224 inclined holes, Kong Yukong
Between distance of center circle be 1mm, maximum stream flow is 15.8L/min.Remaining size and the aerosol fillter complete one that aperture is 1mm
Cause.For the filter that deflection angle is 110 degree of this specific dimensions, the incoming particle of different-grain diameter is taken in, its collection efficiency is such as
Shown in lower：
It is 2mm for aperture, unilateral pipe range is 10mm aerosol fillter, and it is included between 70 inclined holes, Kong Yukong
Distance of center circle be 3mm, maximum stream flow is 79.1L/min.Remaining size is completely the same for 1mm aerosol fillter with aperture.
For the filter that deflection angle is 110 degree of this specific dimensions, the incoming particle of different-grain diameter, the following institute of its collection efficiency are taken in
Show：
For different deflection angles, the aerosol fillter of different inlet diameters, when the particle diameter of incoming particle is 1.5um,
Its filter efficiency is as shown in the table：
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
The present invention is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the essence of various embodiments of the present invention technical scheme
God and scope.
Claims (10)
1. a kind of aerosol fillter based on microfluid inertial impactor principle, it is characterised in that including：Entrance outer cover, outlet
Outer cover, inlet hole plate, outlet orifice plate, abutment sleeve, O-ring seal, screw bolt and nut；The entrance outer cover, O-ring seal,
Inlet hole plate, O-ring seal, outlet orifice plate, O-ring seal and outlet outer cover are real by the cooperation of abutment sleeve and bolt and nut
Now sequentially it is tightly connected；Offered on the inlet hole plate oblique on the 70-224 inclined holes being parallel to each other, the inlet hole plate
The angle of hole and horizontal plane is that the diameter d of the inclined hole on 45 °~60 °, the inlet hole plate is 0.5~2mm, the inlet hole plate
On the length a of inclined hole be 2.5~10mm, the distance of center circle on the inlet hole plate between two adjacent inclined holes is 1-3mm；Institute
The angle for stating the inclined hole and horizontal plane that are offered on outlet orifice plate on the inclined holes that 70-224 is parallel to each other, the outlet orifice plate is
45 °~60 °, the diameter d for exporting the inclined hole on orifice plate is that the length a of the inclined hole on 0.5~2mm, the outlet orifice plate is
Distance of center circle on 2.5~10mm, the outlet orifice plate between two adjacent inclined holes is 1-3mm；It is oblique on the inlet hole plate
The corresponding setting in the way of turning on the inclined hole aperture on the outlet orifice plate of hole aperture, forms 70-224 angle theta for 90 °
~120 ° of filtration channel.
2. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
Stating entrance outer cover is inThe flange sleeve structure of font, the entrance outer cover is highly 66mm；In one end of the entrance outer cover
Ring flange is wholely set, a diameter of 85mm of ring flange, thickness are to be arranged at intervals with 6 positioning on 6mm, the ring flange
1 groove is provided near hole, the center of circle of the ring flange；A diameter of 10mm of the positioning hole of the entrance outer cover, its center
Circle center distance with ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover is annular groove, and its internal diameter is 35mm,
External diameter is 41mm, and depth is 2mm, and the annular groove is used for placing O-ring seal；It is provided with the barrel of the entrance outer cover
10 differential manometer interfaces, the differential manometer interface is divided into 2 groups and is separately positioned on the entrance outer cover at the position at two ends.
3. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
Stating outlet outer cover is inThe flange sleeve structure of font, the outlet outer cover is highly 66mm；In one end one of the outlet outer cover
Body is provided with ring flange, and a diameter of 85mm of ring flange, thickness are to be arranged at intervals with 6 positioning on 6mm, the ring flange
1 groove is provided near hole, the center of circle of the ring flange；The aperture of the positioning hole of the outlet outer cover is 10mm, its center
Circle center distance with ring flange is 30mm；Groove in the flange sleeve of the outlet outer cover is annular groove, and its internal diameter is 35mm,
External diameter is 41mm, and depth is 2mm, and the annular groove is used for placing O-ring seal；It is provided with the barrel of the outlet outer cover
10 differential manometer interfaces, the differential manometer interface is divided into 2 groups and is separately positioned on the outlet outer cover at the position at two ends.
4. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
Inlet hole plate is stated for flange plate structure, it is provided with positioning hole and groove；A diameter of 85mm of the inlet hole plate, thickness is
4mm；The inlet hole plate is arranged at intervals with 6 positioning holes, and the method for the positioning hole of the inlet hole plate and the entrance outer cover
Positioning hole on blue disk is corresponding, a diameter of 10mm of the positioning hole of the inlet hole plate, its center and the inlet hole plate
Circle center distance is 30mm；Groove on the inlet hole plate is annular groove, and its internal diameter is 35mm, and external diameter is 41mm, and depth is
1mm, the annular groove is used for placing O-ring seal；According to hexagonal structure inside the annular groove of the inlet hole plate
Arrangement has been placed equidistant 70-224 inclined hole.
5. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
It is flange plate structure to state outlet orifice plate, and it is provided with positioning hole and groove；A diameter of 85mm of the outlet orifice plate, thickness is
4mm；The outlet orifice plate is arranged at intervals with 6 positioning holes, and the method for the positioning hole of the outlet orifice plate and the outlet outer cover
Positioning hole on blue disk is corresponding, a diameter of 10mm of the positioning hole of the outlet orifice plate, its center and the outlet orifice plate
Circle center distance is 30mm；Groove on the outlet orifice plate is annular groove, and its internal diameter is 35mm, and external diameter is 41mm, and depth is
1mm, the annular groove is used for placing O-ring seal；According to hexagonal structure inside the annular groove of the outlet orifice plate
Arrangement has been placed equidistant 70-224 inclined hole.
6. the aerosol fillter based on microfluid inertial impactor principle according to one of claim 1-5, it is special
Levy and be：The outlet orifice plate is identical with the structure of the inlet hole plate, and both are set in mirror-image fashion；Outside the entrance
Cover is identical with the structure of the outlet outer cover, and both are connected by ring flange in mirror-image fashion.
7. the aerosol fillter according to claim 6 based on microfluid inertial impactor principle, it is characterised in that：Institute
State and sealed between entrance outer cover and the inlet hole plate by O-ring seal, and the O-ring seal be arranged on it is described
In the annular groove of entrance outer cover；Sealed between the inlet hole plate and the outlet orifice plate by O-ring seal；And
The O-ring seal is arranged in the annular groove of both the inlet hole plate and the outlet orifice plate mirror image setting；And institute
State and sealed between outlet orifice plate and the outlet outer cover by O-ring seal, and the O-ring seal be arranged on it is described
In the annular groove for exporting outer cover.
8. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
The length for stating abutment sleeve is 22mm, and the internal diameter of cylinder is 8mm, and external diameter is 9.8mm；The bottom surface disk of the abutment sleeve it is straight
Footpath is 20mm, and thickness is 2mm, and abutment sleeve is used for the entrance outer cover, the outlet outer cover, the inlet hole plate and described
Position of positioning hole on outlet orifice plate is positioned.
9. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：Institute
Bolt is stated for 6 M6 types bolts and 6 matched nuts, for entrance outer cover, outlet outer cover, inlet hole plate, outlet
Orifice plate, abutment sleeve part are fixedly connected；Micropore on the outlet orifice plate and the inlet hole plate, can be added using machine
Work, laser boring or photochemistry etch to process；Flange, diffusion can be passed through between the outlet orifice plate and the inlet hole plate
Weldering or soldering processes connection.
10. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that：
When the length a that the diameter d of the inclined hole on the inlet hole plate is the inclined hole on 1mm, the inlet hole plate is ingate described in 5mm
Distance of center circle on plate between two adjacent inclined holes is to offer 126 inclined holes being parallel to each other on 2mm, the inlet hole plate,
And the diameter d of the inclined hole on the outlet orifice plate, when being also 1mm, the length a of the inclined hole on the outlet orifice plate is 5mm, described
It is also to offer 126 on 2mm, the outlet orifice plate to be parallel to each other to export the distance of center circle on orifice plate between two adjacent inclined holes
Inclined hole, the maximum fluid flow of the aerosol fillter is 35.7L/min；When the diameter of the inclined hole on the inlet hole plate
D is 0.5mm, and the length a of the inclined hole on the inlet hole plate is on 2.5mm, the inlet hole plate between two adjacent inclined holes
Distance of center circle be 1mm, the inclined hole on 224 inclined holes being parallel to each other, and the outlet orifice plate is offered on the inlet hole plate
Diameter d when being also 0.5mm, the length a of the inclined hole on the outlet orifice plate be on 2.5mm, the outlet orifice plate two it is adjacent
Inclined hole between distance of center circle be 1mm, also offer 224 inclined holes being parallel to each other, the aerosol on the outlet orifice plate
The maximum fluid flow of filter is 15.8L/min；When the diameter d of the inclined hole on the inlet hole plate is 2mm, the ingate
The length a of inclined hole on plate is 10mm, and the distance of center circle on the inlet hole plate between two adjacent inclined holes is 3mm, it is described enter
It is described when the diameter d that the inclined hole on 70 inclined holes being parallel to each other, and the outlet orifice plate is offered on oral pore plate is also 2mm
The length a for exporting the inclined hole on orifice plate is that the distance of center circle on 10mm, the outlet orifice plate between two adjacent inclined holes is 3mm,
Also 70 inclined holes being parallel to each other are offered on the outlet orifice plate, the maximum fluid flow of the aerosol fillter is
79.1L/min。
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| CN107086054B (en) | 2019-02-05 |
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