CN107086054B - 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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- CN107086054B CN107086054B CN201710167723.4A CN201710167723A CN107086054B CN 107086054 B CN107086054 B CN 107086054B CN 201710167723 A CN201710167723 A CN 201710167723A CN 107086054 B CN107086054 B CN 107086054B
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- plate
- orifice plate
- outer cover
- outlet orifice
- inlet hole
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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)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the aerosol fillters based on microfluid inertial impactor principle, comprising: entrance outer cover, outlet outer cover, inlet hole plate, outlet orifice plate, abutment sleeve, O-ring seal, screw bolt and nut；Inclined hole aperture on inlet hole plate and inclined hole aperture corresponding setting in a manner of being connected on outlet orifice plate, form the filtration channel that 126 angle thetas are 110 °.Working principle of the present invention is simple, volume is small, can realize the collection to aerosol under the premise of containment pressure decay rate in more not sliding filter paper, not influence accident.The present invention, which 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 technique
Aerosol is also referred to as gas diffuser system, is by the dispersion of liquid or solid particle, is suspended in gas medium and shape
At 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 for carrying particulate matter.
Concentration is very low under normal conditions and is in equilibrium-like 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 increased significantly, will once being released in atmospheric environment
It has serious consequences, increases the risk of accident, therefore corresponding filtering adsorpting device need to be used to avoid such radioaerosol
It is spread into atmosphere.
The aerosol filtration device in nuclear power station mainly has high efficiency particle air filter, venturi scrubber, sand heap mistake at present
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 reticular structure, timing is needed to replace filter medium, after a certain period of use time can the deposition of aerosol dramatically increase flowing resistance
Power, therefore the pressure release after obstruction nuclear accident in container.In addition, not only replacing filter medium under the conditions of high radioactivity is one
A technical problem, and used filter medium can become 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.
Summary of the invention
The purpose of the present invention is to provide a kind of aerosol fillters based on microfluid inertial impactor principle can be not
Under the premise of generating new radioactive waste, the particle of micron-scale can be collected by not needing 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, goes 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 realize that sequentially sealing connects by the cooperation of abutment sleeve and screw bolt and nut
It connects；The 70-224 inclined holes being parallel to each other are offered on the inlet hole plate, the inclined hole and horizontal plane on the inlet hole plate
Angle is 45 °~60 °, and the diameter d of the inclined hole on the inlet hole plate is 0.5~2mm, the length of the inclined hole on the inlet hole plate
Degree a is 2.5~10mm, and the distance of center circle on the inlet hole plate between two adjacent inclined holes is 1-3mm；On the outlet orifice plate
The 70-224 inclined holes being parallel to each other are offered, the angle of inclined hole and horizontal plane on the outlet orifice plate is 45 °~60 °, institute
The diameter d for stating the inclined hole on outlet orifice plate is 0.5~2mm, and the length a of the inclined hole on the outlet orifice plate is 2.5~10mm, institute
Stating the distance of center circle on outlet orifice plate between two adjacent inclined holes is 1-3mm；Inclined hole aperture on the inlet hole plate with it is described
Inclined hole aperture corresponding setting in a manner of being connected on orifice plate is exported, the filtering that 70-224 angle theta is 90 °~120 ° is formed
Channel.
Preferably, the entrance outer cover is in the flange sleeve structure of д font, and the entrance outer cover height is 66mm；Institute
The one end for stating entrance outer cover has been wholely set ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, on the ring flange
6 location holes are arranged at intervals with, the center of circle of the ring flange is nearby provided with 1 groove；The location hole of the entrance outer cover
Diameter is 10mm, and the circle center distance of center and ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover is annular
Groove, internal diameter 35mm, outer diameter 41mm, depth 2mm, the annular groove are used to place O-ring seal；The entrance
10 differential manometer interfaces are provided on 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 of two close end.
Preferably, the outlet outer cover is in the flange sleeve structure of д font, and the outlet outer cover height is 66mm；Institute
The one end for stating outlet outer cover has been wholely set ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, on the ring flange
6 location holes are arranged at intervals with, the center of circle of the ring flange is nearby provided with 1 groove；The location hole of the outlet outer cover
Aperture is 10mm, and the circle center distance of center and ring flange is 30mm；Groove in the flange sleeve of the outlet outer cover is annular
Groove, internal diameter 35mm, outer diameter 41mm, depth 2mm, the annular groove are used to place O-ring seal；The outlet
10 differential manometer interfaces are provided on 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 of two close end.
Preferably, the inlet hole plate is flange plate structure, is provided with location hole and groove；The inlet hole plate it is straight
Diameter is 85mm, with a thickness of 4mm；The inlet hole plate is arranged at intervals with 6 location holes, and the location hole of the inlet hole plate and institute
The location hole stated on the ring flange of entrance outer cover is corresponding, and the diameter of the location hole of the inlet hole plate is 10mm, center with
The circle center distance of the inlet hole plate is 30mm；Groove on the inlet hole plate is annular groove, internal diameter 35mm, outer diameter
For 41mm, depth 1mm, the annular groove is used to place O-ring seal；It is pressed inside the annular groove of the inlet hole plate
70-224 inclined hole has been placed equidistant with according to hexagonal structure arrangement.
Preferably, the outlet orifice plate is flange plate structure, is provided with location hole and groove；It is described to export the straight of orifice plate
Diameter is 85mm, with a thickness of 4mm；The outlet orifice plate is arranged at intervals with 6 location holes, and the location hole of the outlet orifice plate and institute
State outlet outer cover ring flange on location hole it is corresponding, it is described outlet orifice plate location hole diameter be 10mm, center with
The circle center distance of the outlet orifice plate is 30mm；Groove on the outlet orifice plate is annular groove, internal diameter 35mm, outer diameter
For 41mm, depth 1mm, the annular groove is used to place O-ring seal；It is pressed inside the annular groove of the outlet orifice plate
70-224 inclined hole has been placed equidistant with according to hexagonal structure arrangement.
Preferably, the outlet orifice plate is identical with the structure of the inlet hole plate, and the two is arranged in mirror-image fashion；Institute
It is identical with the outlet structure of outer cover to state entrance outer cover, the two is connected by ring flange in mirror-image fashion.
Preferably, it is 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 in both the inlet hole plate and the outlet orifice plate mirror settings
Annular groove in；And it is sealed between the outlet orifice plate and the outlet outer cover by O-ring seal, and 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 outer diameter is 9.8mm；The positioning
The diameter of the bottom surface disk of sleeve be 20mm, with a thickness of 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 type bolts and 6 matched nuts, is used for entrance outer cover, goes out
Mouth outer cover, inlet hole plate, outlet orifice plate, abutment sleeve component are fixedly connected；The outlet orifice plate and the inlet hole plate
On micropore, can be used machining, laser boring or photochemistry etching to process；The outlet orifice plate and the inlet hole plate it
Between can be connected by flange, diffusion welding (DW) or soldering processes.
Preferably, 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
For 5mm, the distance of center circle on the inlet hole plate between two adjacent inclined holes is 2mm, offers 126 on the inlet hole plate
The inclined hole being parallel to each other, and when the diameter d of inclined hole on the outlet orifice plate is also 1mm, inclined hole on the outlet orifice plate
Length a is 5mm, and the distance of center circle on the outlet orifice plate between two adjacent inclined holes is 2mm, is also opened up on 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 0.5mm, and the length a of the inclined hole on the inlet hole plate is 2.5mm, two on the inlet hole plate
Distance of center circle between a adjacent inclined hole is 1mm, offers 224 inclined holes being parallel to each other on the inlet hole plate, and described
When the diameter d of inclined hole for exporting 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 1mm, and 224 are also offered on the outlet orifice plate and is parallel to each other
Inclined hole, the maximum fluid flow of the aerosol fillter are 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 10mm, the circle on the inlet hole plate between two adjacent inclined holes
The heart is away from for 3mm, offering 70 inclined holes being parallel to each other, and the diameter of the inclined hole on the outlet orifice plate on the inlet hole plate
When d is also 2mm, the length a of the inclined hole on the outlet orifice plate is 10mm, on 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 invention proposes a kind of aerosol fillters based on microfluid inertial impactor principle, have performance height, function
Consume low, the features such as being quick on the draw, is at low cost.The device working principle is simple, volume is small, can be changed without filter paper, not shadow
The collection to aerosol is realized in the case of the accident of sound under the premise of containment pressure decay rate.The present invention has started used based on microfluid
Property impactor technology be applied to nuclear power station aerosol collect precedent.The present invention has the particle for being greater than 1um for partial size simultaneously,
Collection efficiency is 75% or more, and the particle of 2um, collection efficiency 100% are greater than for partial size.When air velocity is 6m/s, pressure
When being by force 0.407MPa, the pressure drop of one unit of filter is the advantage of 300Pa or so.
Detailed description of the invention
Fig. 1 is the schematic diagram of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 2 is the structural schematic diagram of the entrance outer cover of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 3 is the structural schematic diagram of the outlet outer cover of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 4 is the structural schematic diagram of the inlet hole plate of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 5 is the structural schematic diagram of the outlet orifice plate of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 6 is the structural schematic diagram of the abutment sleeve of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 7 is the perspective view of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 8 is the main view of the aerosol fillter based on microfluid inertial impactor principle；
Fig. 9 is cross-sectional view of the Fig. 8 along the aerosol fillter based on microfluid inertial impactor principle in the direction C-C；
Figure 10 is the main view that Fig. 8 rotates 30 degree based on the aerosol fillter of microfluid inertial impactor principle；
Figure 11 is cross-sectional view of the Figure 10 along the aerosol fillter based on microfluid inertial impactor principle in the direction F-F；
Figure 12 is the collection efficiency of the aerosol fillter based on microfluid inertial impactor principle and the relational graph of partial size.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution 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 indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In an of the invention broad embodiment: the aerosol fillter based on microfluid inertial impactor principle include: into
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 abutment sleeve 10 and the cooperation realization of 9 nut 11 of bolt；70- is offered on the inlet hole plate 13
The angle of 224 inclined holes being parallel to each other, inclined hole 7 and horizontal plane on the inlet hole plate 13 is 45 °~60 °, the entrance
The diameter d of inclined hole 7 on orifice plate 13 is 0.5~2mm, and the length a of the inclined hole 7 on the inlet hole plate 13 is 2.5~10mm, institute
Stating the distance of center circle on inlet hole plate 13 between two adjacent inclined holes 7 is 1-3mm；70-224 is offered on the outlet orifice plate 14
The angle of a inclined hole 7 being parallel to each other, the inclined hole 7 exported on orifice plate 14 and horizontal plane is 45 °~60 °, the outlet opening
The diameter d of inclined hole 7 on plate 14 is 0.5~2mm, and the length a of the inclined hole 7 on the outlet orifice plate 14 is 2.5~10mm, described
Exporting the distance of center circle on orifice plate 14 between two adjacent inclined holes 7 is 1-3mm；7 aperture of inclined hole on the inlet hole plate 13 with
It is described outlet orifice plate 14 on the corresponding setting in a manner of being connected of 7 aperture of inclined hole, is formed 70-224 angle theta for 90 °~
120 ° of filtration channel.
The entrance outer cover 12 is in the flange sleeve structure of д font, and 12 height of entrance outer cover is 66mm；It is described enter
One end of mouthful outer cover 12 has been wholely set ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, on the ring flange between
Every being provided with 6 location holes, the center of circle of the ring flange is nearby provided with 1 groove；The location hole 4 of the entrance outer cover 12
Diameter is 10mm, and the circle center distance of center and ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover 12 is ring
Connected in star 5, internal diameter 35mm, outer diameter 41mm, depth 2mm, the annular groove 5 are used to place 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 of two close end.
The outlet outer cover 15 is in the flange sleeve structure of д font, and 15 height of outlet outer cover is 66mm；It is described go out
One end of mouthful outer cover 15 has been wholely set ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, on the ring flange between
Every being provided with 6 location holes 4, the center of circle of the ring flange is nearby provided with 1 groove；The location hole 4 of the outlet outer cover 15
Aperture be 10mm, the circle center distance of center and ring flange is 30mm；It is described outlet outer cover 15 flange sleeve on groove be
Annular groove 5, internal diameter 35mm, outer diameter 41mm, depth 2mm, the annular groove 5 are used to place O-ring seal；Institute
It states and is provided with 10 differential manometer interfaces 6 on the barrel of 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 of two close end.
The inlet hole plate 13 is flange plate structure, is provided with location hole 4 and groove；The diameter of the inlet hole plate 13
For 85mm, with a thickness of 4mm；The inlet hole plate 13 is arranged at intervals with 6 location holes 4, and the location hole 4 of the inlet hole plate 13
Corresponding with the location hole 4 on the ring flange of the entrance outer cover 12, the diameter of the location hole 4 of the inlet hole plate 13 is
The circle center distance of 10mm, center and the inlet hole plate 13 is 30mm；Groove on the inlet hole plate 13 is annular groove
8, internal diameter 35mm, outer diameter 41mm, depth 1mm, the annular groove 8 are used to place O-ring seal；In the entrance
70-224 inclined hole 7 has been placed equidistant with according to hexagonal structure arrangement inside the annular groove 8 of orifice plate 13.
The outlet orifice plate 14 is flange plate structure, is provided with location hole 4 and groove；The diameter of the outlet orifice plate 14
For 85mm, with a thickness of 4mm；The outlet orifice plate 14 is arranged at intervals with 6 location holes 4, and the location hole 4 of the outlet orifice plate 14
Corresponding with the location hole 4 on the ring flange of the outlet outer cover 15, the diameter of the location hole 4 of the outlet orifice plate 14 is
The circle center distance of 10mm, center and the outlet orifice plate 14 is 30mm；Groove on the outlet orifice plate 14 is annular groove
8, internal diameter 35mm, outer diameter 41mm, depth 1mm, the annular groove 8 are used to place O-ring seal；In the outlet
70-224 inclined hole 7 has been placed equidistant with according to hexagonal structure arrangement inside the annular groove 8 of orifice plate 14.
The outlet orifice plate 13 is identical with the structure of the inlet hole plate 14, and the two is arranged in mirror-image fashion；It is described
Entrance outer cover 12 is identical with the outlet structure of outer cover 15, and the two is connected by ring flange in mirror-image fashion.
It is sealed between the entrance outer cover 12 and the inlet hole plate 13 by O-ring seal, and 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 setting is in both the inlet hole plate 13 and the outlet orifice plate 14 mirror
In the annular groove 8 of picture setting；And it is carried out between the outlet orifice plate 14 and the outlet outer cover 15 by O-ring seal
Sealing, 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 outer diameter is 9.8mm；The abutment sleeve 10
Bottom surface disk diameter be 20mm, with a thickness of 2mm, abutment sleeve 10 be used for the entrance outer cover 12, the outlet outer cover
15,4 position of location hole on the inlet hole plate 13 and the outlet orifice plate 14 is positioned.
The bolt is 6 M6 type bolts 9 and 6 matched nuts 11, for entrance outer cover 12, outlet outer cover
15, inlet hole plate 13, outlet orifice plate 14,10 component of abutment sleeve are fixedly connected；The outlet orifice plate 14 and the entrance
Machining, laser boring or photochemistry etching can be used to process in micropore on orifice plate 13；The outlet orifice plate 14 and it is described enter
It can be connected by flange, diffusion welding (DW) or soldering processes between oral pore plate 13.
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 2mm, and 126 are offered on the inlet hole plate and is mutually put down
Capable inclined hole, and when the diameter d of inclined hole on the outlet orifice plate is also 1mm, the length a of the inclined hole on the outlet orifice plate is
5mm, the distance of center circle exported on orifice plate between two adjacent inclined holes are 2mm, also offer 126 on the outlet orifice plate
The inclined hole being parallel to each other, the maximum fluid flow of the aerosol fillter are 35.7L/min；When oblique on the inlet hole plate
The diameter d in hole is 0.5mm, and the length a of the inclined hole on the inlet hole plate is 2.5mm, two adjacent on the inlet hole plate
Distance of center circle between inclined hole is 1mm, offers 224 inclined holes being parallel to each other, and the outlet orifice plate on 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 2.5mm, on the outlet orifice plate
Distance of center circle between two adjacent inclined holes is 1mm, also offers 224 inclined holes being parallel to each other, institute on 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 10mm, and the distance of center circle on the inlet hole plate between two adjacent inclined holes is
3mm offers 70 inclined holes being parallel to each other on the inlet hole plate, and the diameter d of the inclined hole on the outlet orifice plate is also
When 2mm, the length a of the inclined hole on the outlet orifice plate is 10mm, the circle on 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 on the outlet orifice plate away from for 3mm
Flow is 79.1L/min.
The present invention have the characteristics that performance it is high, it is low in energy consumption, be quick on the draw, be at low cost.The device working principle is simple, volume
It is small, the receipts to aerosol can be realized under the premise of containment pressure decay rate when being changed without filter paper, not influence accident
Collection.The present invention, which has been started, is applied to the precedent that nuclear power station aerosol is collected based on microfluid inertial impactor technology.This hair simultaneously
Bright to have the particle for being greater than 1um for partial size, collection efficiency is 75% or more, and the particle of 2um, collection efficiency are greater than for partial size
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 attached 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 runner that forms with the inclined hole 7 of outlet orifice plate 14 analyzes the principle of filter.The deflection angle θ of the runner is 110 °, unilateral side pipe
Long a is 5mm.Radioactive particle 3 enters in aerosol fillter with airflow direction 1, when sudden change occurs for the direction of air-flow 1
When, due to inertia, certain offset can occur for movement 2 mark of rail of particle, and it is molten that the biggish radioactive particle 3 of partial size can strike gas
On the inclined hole 7 of the inlet hole plate 13 of glue filter or 7 wall surface of inclined hole of outlet orifice plate 14, the collection of radioactive particle 3 is realized, and
The lesser tracing particle of partial size is preferable, can flow out aerosol fillter with the airflow direction 1 in runner.The main needle of the present 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 stay in
In filter, particle a part less than 2um is collected by filter, and another part is then with air-flow outflow filter.
As shown in Fig. 2, as 12 spaced set of entrance outer cover has 6 location holes 4, a groove and 10 differential manometer interfaces
6.The aperture of the location hole 4 is 10mm, and the distance of center circle with circular bottom plate is 30mm；The groove is annular groove, internal diameter
For 35mm, outer diameter 41mm, depth 2mm；The pressure difference that 6 apertures are 2mm is evenly distributed in plane apart from bottom plate 5mm
Count interface 6, in the plane apart from bottom plate 40mm evenly distributedly 4 apertures be 2mm differential manometer interface 6.
As shown in figure 3, as outlet 15 spaced set of outer cover has 6 location holes 4, a groove and 10 differential manometer interfaces
6.The aperture of the location hole 4 is 10mm, and the distance of center circle with circular bottom plate is 30mm；The groove is annular groove, internal diameter
For 35mm, outer diameter 41mm, depth 2mm；The pressure difference that 6 apertures are 2mm is evenly distributed in plane apart from bottom plate 5mm
Count interface 6, in the plane apart from bottom plate 40mm evenly distributedly 4 apertures be 2mm differential manometer interface 6.
The entrance outer cover 12 is identical with the outlet structure of outer cover 15.
As shown in figure 4, the diameter of inlet hole plate 13 is 85mm, with a thickness of 4mm.It is evenly distributed 6 location holes thereon
4, size and location is identical with entrance outer cover 12.Inlet hole plate 13 includes 126 inclined holes 7, and aperture b is 1mm, with level
The angle in face is 55 °, and completely through entire 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, internal diameter 35mm, outer diameter 41mm, depth 1mm.
As shown in figure 5, the diameter of outlet orifice plate 14 is 85mm, with a thickness of 4mm.It is evenly distributed 6 location holes thereon
4, size and location is identical with outlet outer cover 15.Exporting orifice plate 14 includes 126 inclined holes 7, and aperture b is 1mm, with level
The angle in face is 55 °, and completely through entire 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, internal diameter 35mm, outer diameter 41mm, depth 1mm.
The inlet hole plate 13 is identical with the outlet structure of orifice plate 14.
As shown in fig. 6, the diameter of 10 lower part plectane of abutment sleeve is 20mm, with a thickness of 2mm, the internal diameter of top cylinder is
8mm, outer diameter 9.8mm, a height of 20mm.
As shown in fig. 7, being 140mm based on the separate aerosol fillter height of microfluid inertia impact comprising 6 spiral shells
9,6, bolt abutment sleeve 10,6,11,1, nut entrance outer cover 12,1 outlet orifice plate 14,1 of inlet hole plate 13,1 outlet
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 being arranged between outlet outer cover 15.Aerosol fillter guarantees 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 biggish displacement, finally, by 6 spiral shells
All components are fixed together by bolt attaching nut.
It as described in Figure 8, is the main view of aerosol fillter.
It as described in Figure 9, is cross-sectional view of the Fig. 8 along C-C.
It as described in Figure 10, is the main view of 30 degree of Fig. 8 aerosol fillter rotation.
It as described in Figure 11, is cross-sectional view of the Figure 10 along F-F.
Aerosol fillter of the invention includes the filtration channel that 126 deflection angles are 110 °, and maximum flow design is
35.7L/min.The partial size of particle that the present invention is used to collect mainly concentrates on 1-3um, and radioaerosol is from entrance outer cover
12 inlet enters aerosol fillter and is filtered to aerosol, respectively along 126 after aerosol arrival inlet hole plate 13
For a runner to flowing down, in inlet, some particles hit the wall surface of 14 inclined hole 7 of inlet hole plate, most of to enter bend with air-flow
Interior, since the particulate matter quality of different-grain diameter section is different, partial size is different, and the impact velocity and impact distance of this particulate matter are each
Different, the small particle speed of partial size is high, and partial size it is big granule impact speed it is low, due to inertia, the small particulate matter of partial size be easy with
Air-flow flows directly out pipe and leaves runner outside or after shock wall surface through rebound, and the biggish particulate matter of partial size then hits wall surface and is detained
In runner.Finally, air-flow is flowed out by outlet orifice plate 14 from outlet outer cover 15, the mistake to the aerosol of certain partial size is realized
Filter.Since 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 removed and is rinsed with giant.
For the aerosol fillter of the design, takes out one of unit and carried out simulation calculating, obtained collection effect
Rate and the relationship of partial size are as shown in figure 12.It is greater than the particle of 1um for partial size, collection efficiency is 75% or more, big for partial size
In the particle of 2um, collection efficiency is 100%. when air velocity is 6m/s, and pressure is 0.407MPa, one unit of filter
Pressure drop be 300Pa or so.
By following table, to the distance of center circle between different pore size, unilateral length of tube, Kong Yukong, the hole count of inclined hole, turnover
The relationship between collection rate such as angle, the maximum stream flow at angle is stated.It is 1mm for aperture, unilateral pipe range is the gas of 5mm
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, the particle of 1um is greater than for partial size, collection efficiency is 75% or more, and partial size is greater than
The particle of 2um, collection efficiency 100%.
It is 0.5mm for aperture, unilateral pipe range is the aerosol fillter of 2.5mm, and it includes 224 inclined holes, Kong Yukong
Between distance of center circle be 1mm, maximum stream flow 15.8L/min.The aerosol fillter complete one that remaining size and aperture are 1mm
It causes.It is the filter of 110 degree of this specific dimensions for deflection angle, takes in the incoming particle of different-grain diameter, collection efficiency is such as
Shown in lower:
It is 2mm for aperture, unilateral pipe range is the aerosol fillter of 10mm, it includes 70 inclined holes, between Kong Yukong
Distance of center circle be 3mm, maximum stream flow 79.1L/min.Remaining size and the aerosol fillter that aperture is 1mm are completely the same.
It is the filter of 110 degree of this specific dimensions for deflection angle, takes in the incoming particle of different-grain diameter, the following institute of collection efficiency
Show:
For different deflection angles, the aerosol fillter of different inlet diameters, when the partial size of incoming particle is 1.5um,
Its filter efficiency is as shown in the table:
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (10)
1. a kind of aerosol fillter based on microfluid inertial impactor principle, characterized by comprising: 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 pass through the cooperation of abutment sleeve and screw bolt and nut
Realization is sequentially tightly connected；The inclined holes that 70-224 is parallel to each other are offered on the inlet hole plate, on the inlet hole plate
The angle of inclined hole and horizontal plane is 45 °~60 °, and the diameter d of the inclined hole on the inlet hole plate is 0.5~2mm, the ingate
The length a of inclined hole on plate is 2.5~10mm, and the distance of center circle on the inlet hole plate between two adjacent inclined holes is 1-3mm；
The 70-224 inclined holes being parallel to each other are offered on the outlet orifice plate, the angle of inclined hole and horizontal plane on the outlet orifice plate
It is 45 °~60 °, the diameter d of the inclined hole on the outlet orifice plate is 0.5~2mm, the length a of the inclined hole on the outlet orifice plate
For 2.5~10mm, the distance of center circle exported on orifice plate between two adjacent inclined holes is 1-3mm；On the inlet hole plate
Inclined hole aperture with it is described outlet orifice plate on the corresponding setting in a manner of being connected of inclined hole aperture, forming 70-224 angle theta is
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
The flange sleeve structure that entrance outer cover is in д font is stated, the entrance outer cover height is 66mm；In one end one of the entrance outer cover
Body is provided with ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, is arranged at intervals with 6 positioning on the ring flange
The center of circle in hole, the ring flange is nearby provided with 1 groove；The diameter of the location hole of the entrance outer cover is 10mm, center
Circle center distance with ring flange is 30mm；Groove in the flange sleeve of the entrance outer cover is annular groove, internal diameter 35mm,
Outer diameter is 41mm, depth 2mm, and the annular groove is used to place O-ring seal；It is provided on the barrel of the entrance outer cover
10 differential manometer interfaces, the differential manometer interface are divided into 2 groups and are separately positioned on the entrance outer cover at the position of two close end.
3. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that: institute
The flange sleeve structure that outlet outer cover is in д font is stated, the outlet outer cover height is 66mm；In one end one of the outlet outer cover
Body is provided with ring flange, and the flange disk diameter is 85mm, with a thickness of 6mm, is arranged at intervals with 6 positioning on the ring flange
The center of circle in hole, the ring flange is nearby provided with 1 groove；The aperture of the location hole of the outlet outer cover is 10mm, center
Circle center distance with ring flange is 30mm；It is described outlet outer cover flange sleeve on groove be annular groove, internal diameter 35mm,
Outer diameter is 41mm, depth 2mm, and the annular groove is used to place O-ring seal；It is provided on the barrel of the outlet outer cover
10 differential manometer interfaces, the differential manometer interface are divided into 2 groups and are separately positioned on the outlet outer cover at the position of two close end.
4. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that: institute
Stating inlet hole plate is flange plate structure, is provided with location hole and groove；The diameter of the inlet hole plate is 85mm, with a thickness of
4mm；The inlet hole plate is arranged at intervals with 6 location holes, and the method for the location hole of the inlet hole plate and the entrance outer cover
Location hole on blue disk is corresponding, and the diameter of the location hole of the inlet hole plate is 10mm, center and the inlet hole plate
Circle center distance is 30mm；Groove on the inlet hole plate is annular groove, internal diameter 35mm, outer diameter 41mm, and depth is
1mm, the annular groove are used to place O-ring seal；According to hexagonal structure inside the annular groove of the inlet hole plate
Arrangement has been placed equidistant with 70-224 inclined hole.
5. the aerosol fillter according to claim 1 based on microfluid inertial impactor principle, it is characterised in that: institute
Stating outlet orifice plate is flange plate structure, is provided with location hole and groove；The diameter of the outlet orifice plate is 85mm, with a thickness of
4mm；The outlet orifice plate is arranged at intervals with 6 location holes, and the method for the location hole of the outlet orifice plate and the outlet outer cover
Location hole on blue disk is corresponding, and the diameter of the location hole of the outlet orifice plate is 10mm, center and the outlet orifice plate
Circle center distance is 30mm；Groove on the outlet orifice plate is annular groove, internal diameter 35mm, outer diameter 41mm, and depth is
1mm, the annular groove are used to place O-ring seal；According to hexagonal structure inside the annular groove of the outlet orifice plate
Arrangement has been placed equidistant with 70-224 inclined hole.
6. one of -5 aerosol fillter based on microfluid inertial impactor principle according to claim 1, special
Sign is: the outlet orifice plate is identical with the structure of the inlet hole plate, and the two is arranged in mirror-image fashion；Outside the entrance
Cover is identical with the outlet structure of outer cover, and the two is 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
It states and is sealed between entrance outer cover and the inlet hole plate by O-ring seal, and the O-ring seal is arranged described
In the annular groove of entrance outer cover；It is sealed between the inlet hole plate and the outlet orifice plate by O-ring seal；And
The O-ring seal is arranged in both the inlet hole plate and the outlet orifice plate annular groove of mirror settings；And institute
It states and is sealed between outlet orifice plate and the outlet outer cover by O-ring seal, and the O-ring seal is arranged 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 outer diameter is 9.8mm；The bottom surface disk of the abutment sleeve it is straight
Diameter is 20mm, and with a thickness of 2mm, 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
State bolt be 6 M6 type bolts and 6 matched nuts, for entrance outer cover, outlet outer cover, inlet hole plate,
Outlet orifice plate, abutment sleeve component are fixedly connected；Micropore on the outlet orifice plate and the inlet hole plate, can be used machine
Processing, laser boring or photochemistry etching are to process；Flange, expansion can be passed through between the outlet orifice plate and the inlet hole plate
Dissipate 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 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, the entrance
Distance of center circle on orifice plate between two adjacent inclined holes is 2mm, offered on the inlet hole plate 126 be parallel to each other it is oblique
Hole, and when the diameter d of inclined hole on the outlet orifice plate is also 1mm, the length a of the inclined hole on the outlet orifice plate is 5mm, institute
Stating the distance of center circle on outlet orifice plate between two adjacent inclined holes is 2mm, and 126 are also offered on the outlet orifice plate and is mutually put down
Capable inclined hole, the maximum fluid flow of the aerosol fillter are 35.7L/min；It is straight when the inclined hole on the inlet hole plate
Diameter d is 0.5mm, and the length a of the inclined hole on the inlet hole plate is 2.5mm, on the inlet hole plate two adjacent inclined holes it
Between distance of center circle be 1mm, 224 inclined holes being parallel to each other are offered on the inlet hole plate, and oblique on the outlet orifice plate
When the diameter d in hole is also 0.5mm, the length a of the inclined hole on the outlet orifice plate is 2.5mm, two phases on the outlet orifice plate
Distance of center circle between adjacent inclined hole is 1mm, also offers 224 inclined holes being parallel to each other on the outlet orifice plate, the gas is molten
The maximum fluid flow of glue filter is 15.8L/min；When the diameter d of the inclined hole on the inlet hole plate is 2mm, the entrance
The length a of inclined hole on orifice plate is 10mm, and the distance of center circle on the inlet hole plate between two adjacent inclined holes is 3mm, described
Offer 70 inclined holes being parallel to each other on inlet hole plate, and when the diameter d of the inclined hole on the outlet orifice plate is also 2mm, institute
The length a for stating the inclined hole on outlet orifice plate is 10mm, and the distance of center circle on the outlet orifice plate between two adjacent inclined holes is
3mm also offers 70 inclined holes being parallel to each other on the outlet orifice plate, and the maximum fluid flow of the aerosol fillter is
79.1L/min。
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| CN108526735B (en) * | 2018-03-20 | 2020-09-18 | 北京控制工程研究所 | Method for manufacturing multi-layer pore plate multi-channel throttling assembly of micro-flow control device |
| CN113740253B (en) * | 2021-07-28 | 2022-06-28 | 西安交通大学 | Test device, system and method for determining initial cavitation number of orifice plate under high temperature and high pressure |
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