CN107525629A - Scanning device for filter leaks detection - Google Patents
Scanning device for filter leaks detection Download PDFInfo
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- CN107525629A CN107525629A CN201710453201.0A CN201710453201A CN107525629A CN 107525629 A CN107525629 A CN 107525629A CN 201710453201 A CN201710453201 A CN 201710453201A CN 107525629 A CN107525629 A CN 107525629A
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- 238000001514 detection method Methods 0.000 title claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000000523 sample Substances 0.000 claims description 20
- 238000012360 testing method Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 5
- 229920000271 Kevlar® Polymers 0.000 claims description 4
- 239000004761 kevlar Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/442—Auxiliary equipment or operation thereof controlling filtration by measuring the concentration of particles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/18—Testing of filters, filter elements, sealings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A kind of scanning device (100) for filter leaks detection is provided, the scanning device includes being arranged for scanning at least one scanning means (131a, 131b) of corresponding filter (122a, 122b).Each scanning means includes scanning head (132a, 132b) and travel mechanism (133a, 133b), the full duration of the corresponding filter surfaces of scanning head (132a, 132b) covering scanning means, travel mechanism (133a, 133b) are each operable such that scanning head on filter along the direction dislocation perpendicular to scanning head.Scanning device includes being disposed parallel to the elongated rotatable actuator (134) of scanning head extension.Each travel mechanism is connected to actuator.It thus provides the scanning carried out in a controlled manner, it scans several filters being disposed adjacent to from side approximated position, particularly in the side more than a filter depth close to the filter in casing.
Description
Invention field
The present invention relates to a kind of scanning device for filter leaks detection and travel mechanism.
Background of invention
Needing the air of high efficiency particulate air filter (such as efficiency particulate air (HEPA) filter or other high efficiency particulate air filters)
In ventilating system, it is known to use filter housing, in filter housing, filter unit is fixed and pressed from both sides by effectively machinery
Tightly, respective filter unit is sealed in filter housing.High efficiency filter is sealed using such machine clamping mechanism
During device, it is necessary that ensure that any bypass or leakage around sealing are permeated less than the maximum of filter.Also it is necessary that really
Saving the filter surfaces in portion from damage does not have any pin hole leak or other defect.The technology is in such as ISO14644-3 B.6 section
It is described.In national standard, such as in the Chinese Industrial Standards (CIS) of bio-safety exhaust HEPA filtration facilities, it also specify similar
And tightened up test.Can be as the single-point average (single point average) at filter rear or by close to mistake
Filter surface is scanned to be tested.Former approach need sampled at the pipe diameter of more than 20, filter rear with
Ensure that single sample is thoroughly mixed, and although later approach is preferable and more accurate, but need close to filter table
Face and the packing ring of surrounding.If fan is placed on filter rear so as to produce negative pressure, close to the latter of surface scan
Process is actually more impossible.To any close path that will open air into pipeline of filtration zone and reduction
Or the even complete stream removed by filter, so that test becomes impossible.Therefore, the present invention, which discusses, allows this scanning
System.
Filter housing as described above with filter frame component and clamp system is generally used for the filtering of key
In, such as nuclear energy, pharmacy and dangerous laboratory.Meet the very high of such as bio-safety office increasingly strict requirements
Safety standard is thus employed.Need to carry out the regular re-test of filter or even change, to meet regulatory requirement, and may
It is related to and regularly changes a large amount of filters.The above-mentioned type and other clamp systems are potentially prone to, and are changing air draught
(if for example, filter is not properly oriented, packing ring is not complete for any mistake caused by during filter in system
Work, clamp system is without correctly closing etc.) dangerous substance may be caused to leak into surrounding environment.In addition, for certain
The HEPA filters of a little types, filter surfaces are very fragile, in some instances it may even be possible to are damaged because of slight touch.
For these reasons, the filter that Compulsory Feature inspection in some applications is arranged in filter housing is nothing
Leakage and meet filtration grade.This is swept by the way that scanning head is completed including the part for filter housing by this
Probe is retouched, air is collected in the downstream of filter and is analyzed on undesirable material.With air inlet and by air sample
This offer to analyzer scanning head close to filter surfaces the distance defined at move in a controlled manner, so as to
The sample in the very small region from filter is obtained when appropriate.If analyzer be able to should be sent out in concentration increase
Now reveal, then need to detect very small region.Therefore, it is desirable to air stream will not hindered to reach situation about popping one's head in from filter
Under, probe is mounted so as to as close to filter surfaces.
Have been developed that movement and conceived with scanning the different of the test probe of filter area.A kind of its test probe is long
The test probe of shape, length or width extension of the elongated test probe along filter, and it is manual or motor-driven by some
Mechanism, such as cylinder, drive screw, move back and forth perpendicular to its Longitudinal extending direction, to scan the area near filter surfaces
Domain.Typical elongated test probe is made up of the pipe with several ingates and central outlet, and several ingates are worn
Cross distribution of lengths of the tube wall along test probe.
Summary of the invention
Advantageously, there is provided a kind of replacement and improved scanning device and the travel mechanism for scanning device, it is
Durable and cost benefit is high, and it is easily changed and installed.Furthermore it is advantageous that provide a kind of be applied to more
The scanning device of the filter housing of individual filter unit.
In order to preferably solve this problem, first aspect of the present invention it is proposed a kind of be used at least one filtering
The scanning device of the filter leaks detection of device, the scanning device are arranged for scanning respective filter including at least one
Scanning means.Each scanning means includes scanning head and travel mechanism, and scanning head covers the corresponding filtering of scanning means
The full duration on device surface, travel mechanism are operable such that scanning head on filter along perpendicular to the direction of scanning head
Dislocation.Scanning device includes being disposed parallel at least one elongated rotatable actuator of scanning head extension.Each
Travel mechanism is connected to actuator.If desired, even if single rotary actuator can simplify structure and therefore be preferred
, it can also use the actuator (such as extension type actuator) of one group of rotatable arranged concentric, or along identical longitudinal direction
The adjacent actuators of one group of connection of axis arrangement.
Scanning device, which is advantageously arranged to that several can be scanned from side approximated position in a controlled manner, to be adjacently positioned
Filter, particularly more than the side of a filter depth close to the mistake in casing (side access cabinet)
Filter.Because each scanning head covers the full duration (or length) of each filter unit, it preferably includes filter unit
Seal section, therefore total filter surfaces region of filter housing can be advantageously scanned in single sweep operation.It is in addition, logical
Cross and provided on moving range (being preferably chosen to highly consistent with filter unit) along relative to scanning head
The movement in the vertical direction in Longitudinal extending direction, there is provided be scanned with same scan speed to the filter of assorted size.
For example, the filter of filter unit and 610x305 (mm) size comprising 610x610 (mm) (high x is wide) size
The side of unit will undergo identical sweep speed/time of two filter units close to casing, because scanning is along phase
What same distance (such as between top and bottom of each filter unit) performed.
The function of actuator is to provide the scanning head movement being mechanically coupled, and this can control multiple scannings with same actuator
Device.It is noted that the moving direction of scanning head can be alternatively along depth direction, i.e., when filter unit is arranged to push up
Face is arranged and filter unit is so as to when flatly arranging.
According to the embodiment of scanning device, travel mechanism includes being connected to the driving wheel of actuator, such as pulley, crank
Axle, gear (cog wheel), and including the driving element by drive wheel.
According to the embodiment of scanning device, the movement that travel mechanism also includes being arranged for guiding scanning head is led
Rail, this is favourable.By providing the guide rail of the movement for scanning head, the tolerance of the movement of driving element in itself increases,
Scanning without damaging scanning head.
According to the embodiment of scanning device, travel mechanism also includes being arranged for the sliding block moved along guide rail, and
Scanning head is fixed to or is releasably attached on the sliding block.
When scanning head moves, guide rail and sliding block are advantageously scanning head and provide lateral stability.Guide rail is advantageously
The preset distance of fixation between scanning head and filter surfaces is provided.
According to the embodiment of scanning device, driving element is arranged in upper end position and lower end position (preferably respectively
Be arranged at the top and bottom of filter) between extend.Scanning head can be directly attached in driving element.
According to the embodiment of scanning device, the gear number (gear) of driving wheel is selected with the sweep speed of offer pre-selection.Can
There is provided the actuator of pre-selection each revolution of sweep speed to select sweep speed.Advantageously, driving wheel can be replaceable, and
And different sweep speeds can be selected, such as drive wheel diameter to provide the different gear drives of driving wheel by changing
(gearing)。
In a preferred embodiment of the invention, the gear number of driving wheel is selected to provide actuator every scanning for turning 5cm/s
Speed, this meets the requirement B.6 saved in standard ISO14644-3.By the way that the driving wheel in the form of gear is connected to pre-
Select the actuator (drive shaft) of the number of teeth, can select scanning head along perpendicular to the direction of scanning head move and actuator
The gearratio of the revolution (rpm) of (such as when by crank or motor driving).This advantageously makes scanning device easily be proposed not
The different testing standards of same linear scanning probe speed are used.
According to the embodiment of scanning device, driving element is one in cingulum, chain, flat rubber belting and rope.When driving member
Part is cingulum and when driving wheel is gear, there is provided the controlled movement of scanning head, this allows for the position of scanning head
The disclosure (revelation) advantageous by position computing is put to calculate.
According to the embodiment of scanning device, driving element includes the rope reinforced, particularly fine with steel or Kevlar
The rope that (Kevlar) is reinforced is tieed up, which improves the mechanical stability of driving element, such as prevents driving element from stretching over time
Exhibition, so that tension mechanism is unnecessary.
According to the embodiment of scanning device, actuator be by crank handle, motor, by scanning equipment (it can be wrapped
Include computer, analyzer and valve) motor device of control or the drive shaft of some other applicable rotating mechanism rotations.This is carried
A kind of system for being easy to manipulate is supplied, without using long mobile bar etc., long mobile bar etc. is when performing scanning process from mistake
Filter module casing extends.
According to the embodiment of scanning device, the range of movement of scanning head is by first end position and the second end position
Define, i.e., scanning head can along perpendicular to the direction in its Longitudinal extending direction in first end position and the second end position
Between move, and actuator arrangement is in the range of movement, i.e. actuator arrangement is into the Longitudinal extending parallel to scanning head
Direction, but in the scanning area of filter, so as to provide being approached relative to the side of filter housing for actuator.
According to the embodiment of scanning device, at least one scanning head is seamlessly to cover each filter surfaces and close
Seal section overall length one group of probe, multi-chamber probe, have along test probe length pass through tube wall distribution several
One in pipe and V-type the filters scan probe of ingate.
According to the embodiment of scanning device, actuator includes the actuator of one group of arranged concentric, and (such as extension type causes
Dynamic device), or the adjacent actuators of one group of connection along identical longitudinal axis arrangement.
According to the one side of present inventive concept, there is provided a kind of scanning means for filter leaks detection, the scanning
Device includes elongated rotatable actuator and at least one travel mechanism, and at least one travel mechanism is operable such that phase
Answer direction dislocation of the elongated scanning head along the longitudinal direction perpendicular to scanning head on corresponding filter, the length
The scanning head of shape covers the full duration on its respective filter surface, and at least one travel mechanism is connected to elongated revolve
The actuator turned, elongated rotatable actuator arrangement extend into the longitudinal direction parallel to scanning head.If desired
Words, actuator is the actuator (such as extension type actuator) of one group of rotatable arranged concentric, or along identical longitudinal axis
The adjacent actuators of one group of connection of line arrangement.However, simplifying structure using single rotatable actuator and being therefore excellent
Choosing.This scanning means is described above with reference to the embodiment of the scanning device for employing scanning means of present inventive concept
Different embodiments and advantage.
Brief description
Now, by refer to the attached drawing and the present invention is more fully described, in the accompanying drawings：
Fig. 1 a and Fig. 1 b are the filterings for schematically showing the embodiment including the scanning device according to present inventive concept
The perspective view of device shell；
Fig. 2 a and Fig. 2 b respectively illustrate the embodiment of the travel mechanism according to present inventive concept decomposition diagram and
Perspective view；With
Fig. 3-Fig. 5 is the perspective view for the embodiment for showing present inventive concept.
The description of embodiment
With reference now to Fig. 1 a and Fig. 1 b, the filter assemblies 100 for air filter unit include filter housing
110, the filter housing 110 is adapted to mount in air ventilation systems.Filter housing 110 includes casing 111, casing 111
With upstream air inlet 115, downstream air-outlet 113, relative side wall 117,118 and relative roof 119 and bottom wall
120, upstream air inlet 115 is defined by air intake framework 116, and downstream air-outlet 113 is defined by air outlet slit framework 114
(see Fig. 1 b) and at air intake 115, relative side wall 117,118 has the spatial orientation shown in Fig. 1 b and can
It is referred to as the first side wall 117 and second sidewall 118, relative roof 119 and bottom wall 120 are in air intake framework 116 and air
Extend between outlet frame 114 and be attached with it.Door 112 is arranged at the first side wall 117.When door 112 closes, door 112 is close
Seal the first side wall 117.
Roof and bottom wall are also used as side wall, and wherein installation of the filter housing 110 in air ventilation systems is different.
Therefore, in this application, the reference in space is related to by the air stream of filter housing, i.e. upstream and downstream reference.First
Side wall 117 and second sidewall 118 are opened between air intake framework 116 and air outlet slit framework 114 and in roof 119 and before
Extend between mouth framework 116, and be connected thereto.
Door 112 is arranged to optionally to seal filter to be configured to just close to port 121, the filter close to port 121
In filter unit 122a, 122b (it is shown as installment state in Figure 1b) are installed in filter housing 110 (and move
Except filter unit 122a, 122b).Installation includes receiving and clamps filter unit, so that filter unit and air intake
The face (such as on flange) of the (not shown in detail) of framework 116 sealingly engages.Door 112 is connected to casing by articulated elements 123
111.Door includes seal (invisible), and the seal engages when door 112 is in the close position with the face of the first side wall 117,
So as to seal filter close to port.
With reference now to Fig. 1 b, according to the embodiment of the scanning device 130 of the present invention in the internal volume of casing 111 cloth
Put in filter unit 122a, 122b downstream.(for simplicity, eliminate in the accompanying drawings with outlet frame 114 hermetically
The lid with exhaust structure of engagement.) scanning device 130 is configured to have two single scanning means 131a, 131b, should
Two scanning means 131a, 131b are each positioned at respective filter unit 122a, 122b.This be arranged such that can approach
It is each in filter frame and surface, to realize that the leakage of desired specific (space) resolution ratio (resolution) is examined
Survey.Each scanning means has elongated scanning head 132a, 132b and associated travel mechanism 133a, 133b, moving machine
Structure 133a, 133b are operable such that its respective scanned pops one's head in 132a and 132b along perpendicular to the vertical of scanning head 132a, 132b
To the direction of bearing of trend, dislocation, two end positions are distinguished between two end positions (in Figure 1b labeled as A and B)
At its respective filter unit 122a, 122b top and bottom.Due to scanning means 131a, 131b each scanning head
(i.e. filter unit region is optional for full distance necessary to 132a, 132b covering scan its respective filter unit 122a, 122b
Ground adds the width of its sealing area), therefore need only be along the movement perpendicular to scanning head 132a, 132b a direction
To cover the scanning to whole filter surfaces.Along the scope moved perpendicular to scanning head 132a, 132b direction by
First end position A at the roof 119 of shell and the second end position B at the bottom wall 120 of shell are defined, or are replaced
Dai Di, moving range can be defined as the distance between upper end position and lower end position, upper end position and lower end position difference cloth
Put at the top and bottom of filter area.
Each corresponding travel mechanism 133a, 133b perpendicular to the Longitudinal extending direction of scanning head roof 119 interior table
Extend between the inner surface of face and bottom wall 120.The embodiment of travel mechanism is described in more detail below with reference to Fig. 2.
Referring still to Fig. 1 a and Fig. 1 b, elongated and rotatable actuator (or one group of actuator) is arranged in filter
Along the direction extension parallel to scanning head 132a, 132b in shell 111, and travel mechanism 133a and 133b couples here
To same actuator 134.If desired, even if single rotatable actuator can simplify structure and therefore be preferred
, the rotatable actuator of one group of arranged concentric can also be used.Actuator 134 is also by being arranged in the first side wall 117
Airtight penetrating member 140 be connected to rotating mechanism, rotating mechanism is herein can be from the crank 135 of the peripheral operation of casing 111.
Other applicable rotating driving devices for revolving actuator include such as motor or the motor by scanning equipment control is set
It is standby.
According to the embodiment of present inventive concept, actuator arrangement/be positioned at the scanned range of movement covering popped one's head in
In region, that is, it is positioned between first end position A and the second end position B.
With reference now to Fig. 2 a, according to embodiment of the present invention, scanning means 131 includes travel mechanism 133, travel mechanism
133 include driving wheel 135, and driving wheel 135, which is arranged to, to be received actuator 134 (being not shown in fig. 2) and connect with actuator 134
Close so that when actuator 134 rotates, driving wheel 135 rotates.Driving element 136 is suspended on the end of first end wheel 137 and second
Between portion's wheel 138.First end wheel and the second end wheel can be gear or freewheel.First end wheel 137 is arranged in suspension
In support component 139, suspension strut element 139 is fixed to the first end position 157 of supporting rail 154.Suspension strut element 139
Applicable fastener (such as screw, rivet, Quick connection part etc., be not shown) is arranged with to be fixed in shell 111
Roof 119 at.Corresponding device is provided for the second end wheel 138, the second end wheel 138 is arranged in suspension strut element
In 140, suspension strut element 140 is fixed at the second end part 158 of supporting rail 154.Suspension strut element 140 is also arranged
The bottom in shell 111 is fixed on into using applicable fastener (such as screw, rivet, Quick connection part etc., be not shown)
At wall 120.
Driving element 136 is arranged vertically relative to actuator and scanning head 132.Driving element 136 also with driving wheel 135
Engagement, driving wheel 135 rotates with the rotation of actuator, so as to drive the driving element 136.Guide rail 154 is long herein
The shape of shape, there is the first side 155 and the second side 156 and relative first end part 157 and the second end part
158.For stabilized driving wheel 135 and the transverse shifting of driving element 136 is limited, it is substantially U-shaped cross section and with support lugn
Driving element is held in place by supporting construction 143, and is provided for installing driving wheel 135 and alternatively installing guide wheel 142
Base portion.Supporting construction 143 is attached to the second side 156 of guide rail 154, and driving element 136 is vertical along it around guide rail 154
Circumferentially hung to direction, see Fig. 2 b, Fig. 2 b show end wheel 137,138 and guide rail 154 be how to be driving element 136
Guide rail 144 is provided, driving element 136 is also engaged by guide wheel 142 with driving wheel 135.Sliding block 141 is in driving element
The part being arranged on the first side 155 of guide rail 154 on be attached to driving element 136.Sliding block 141 and guide rail 154 are provided with
Complementary track 160,161 (receiving mutually) so that when the driving wheel 135 of actuator 134/ moves driving element 136, sliding block
141 followed by guide rail 154.Alternatively, scanning head 132 can be directly attached in driving element.
According to an embodiment, driving wheel 135 is gear, and driving element 136 is cingulum.In the exemplary embodiment party
In case, actuator is the drive shaft of circular section, and it is received and engaged with gear 135 by gear 135 so that when actuator rotates
When, gear sliding tooth band 136.The other shapes of actuator section are applicable, such as square, tooth form.As shown in Figure 2 b, scanning is visited
First 132 are connected to the sliding block 141 being arranged on guide rail 154.Sliding block 141 carries scanning head 132.Driving element (cingulum) 136
It is also about upper end position gear 137 and lower end position gear 138 is hung, upper end position gear 137 and the cloth of lower end position gear 138
It is set to predetermined diameter.The diameter of upper end position gear 137 and lower end position gear 138 is selected, so that probe sliding block can
The top and lowermost end of filter are moved to, so as to scan whole filter surfaces in being circulated in single pass.
Cingulum can be reinforced by steel or Kevlar fabric rope, to prevent cingulum from stretching over time, so that
It is unnecessary to obtain tension mechanism.
It is suitable to implement using Quick connection part according to the scanning device of the present invention, so that equipment is readily disassembled and again pacified
Dress, for example, repairing or being adapted if desired in existing filter unit casing.
According to embodiment of the present invention, the gear number of driving wheel is selected to provide the sweep speed of pre-selection.In scanning device
An embodiment in, actuator is crank axle, and select the gear number of driving wheel and crank with provide 5cm/s scanning speed
Degree.For the typical filter unit size that height is 60 centimetres, scanning needs 12 seconds, and crank needs rotation 12 times.
Referring now to Figure 3, it is arranged according to the scanning device 230 of the present invention in filter housing 200, filter housing
200 have the casing 211 for being arranged for assembling three filter units (being not shown in the accompanying drawings) being adjacently positioned.Scanning is set
Standby 230 have the arrangement similar with the embodiment shown in above-mentioned Fig. 1, but include three travel mechanisms being adjacently positioned herein
231a, 231b and 231c, this three travel mechanism 231a, 231b and 231c being adjacently positioned connect with common actuator 234
Close, actuator 234 extends parallel to scanning head 132a, 132b, 132c of each travel mechanism.Each scanning head 132a,
132b, 132c are here adapted to filter unit of the scanning with same widths and height.In an alternative embodiment, it is adjacent
The scanning head of arrangement is suitable to scanning with different in width but with mutually level filter unit.
Fig. 4 and Fig. 5 shows two other embodiment of the scanning device 330 and 430 according to the present invention, wherein scanning
Equipment 330 and 430 is arranged in the filter housing 300 and 400 with casing 311 and 411, and casing 311 and 411 is distinguished
It is arranged for four filter units and the single filter unit that assembling is adjacently positioned.
In the scanning device 330 shown in Fig. 4, four travel mechanisms 331a, 331b, 331c, 331d are positioned at accordingly mistake
At filter module (not shown).Two actuator 334a and 334b parallel to each corresponding travel mechanism 331a, 331b,
331c, 331d scanning head 332a, 332b, 332c, 332d extension.Crank handle 335a and 335b are arranged in shell 311
Outside, and thereby enable and start the scanning of filter unit when filter unit is arranged in filter housing.Each
Scanning head 332a, 332b, 332c are here adapted to filter unit of the scanning with same widths and height.In the reality of replacement
Apply in scheme, the scanning head being adjacently positioned is suitable to scanning with different in width but with mutually level filter unit.
In addition, it will be understood to those of skill in the art which feature of different embodiments can be combined, although above
It is not expressly written.
Although explaining and describing in the description of the present invention in accompanying drawing and above, this explanation and description
It is considered as illustrative or exemplary, rather than restricted；The present invention is not limited to disclosed embodiment.
Other modifications of disclosed embodiment can put into practice invention claimed by those skilled in the art
When, with reference to the accompanying drawings, the research of disclosure and appended claims understands and realizes.In the claims, word " including
(comprising) " be not excluded for other element or steps, and indefinite article " one (a) " or " one (an) " be not excluded for it is more
It is individual.The fact that only describe some measures in mutually different dependent claims is not offered as the combination of these measures not
It can be advantageously used.Any reference marker in claim should not be construed as limited to the scope.
Claims (14)
1. a kind of scanning device, it is used for the filter leaks detection of at least one filter, and the scanning device includes arrangement
Into at least one scanning means for scanning corresponding filter,
Each scanning means includes：
Scanning head, it covers the full duration of its corresponding filter surfaces；With
Travel mechanism, its can operate so that the scanning head on the filter along perpendicular to the scanning head
Direction dislocation,
The scanning device includes being used at least one elongated rotatable actuator for starting the travel mechanism, the cause
Dynamic device is disposed parallel to the scanning head extension, and wherein each travel mechanism is connected to the actuator.
2. scanning device according to claim 1, wherein the travel mechanism includes driving wheel and driving element, the drive
Driving wheel is connected to the actuator, and the driving element is by the drive wheel.
3. scanning device according to claim 1 or 2, wherein the travel mechanism also includes guide rail, the guide rail arrangement
Into the movement for guiding the scanning head.
4. scanning device according to claim 3, wherein the travel mechanism also includes sliding block, the sliding block is arranged to use
Moved in along the guide rail, and the scanning head is attached on the sliding block.
5. the scanning device according to any one of claim 2 to 4, wherein the driving element is arranged in upper end position
Put and extend between lower end position, the upper end position and the lower end position are arranged in the top and bottom of the filter
At portion.
6. the scanning device according to any one of claim 2 to 5, wherein the gear number of the driving wheel is selected as carrying
For the sweep speed of pre-selection.
7. the scanning device according to any one of claim 2 to 6, wherein the driving element is cingulum, chain, put down
One in band and rope.
8. the scanning device according to any one of claim 2 to 7, wherein the driving element includes the rope reinforced
Rope, the rope particularly with steel or Kevlar fabric.
9. according to the scanning device described in any one preceding claims, wherein the actuator is drive shaft, the drive shaft
Rotated by crank handle, motor, by the motor device of scanning equipment control.
10. according to the scanning device described in any one preceding claims, wherein the range of movement of the scanning head is by first
End position and the second end position are defined, and wherein described actuator arrangement is in the range of movement.
11. according to the scanning device described in any one preceding claims, wherein at least one scanning head be it is following in one
It is individual：Seamlessly cover one group of probe of the overall length of each filter surfaces and seal section, multi-chamber is popped one's head in, is had along test
Pipe and V-type filters scan probe of the length of probe through several ingates of tube wall distribution.
12. according to the scanning device described in any one preceding claims, wherein the actuator includes one group of arranged concentric
The adjacent actuators of actuator, extension type actuator or one group of connection along identical longitudinal axis arrangement.
13. a kind of scanning means, the filter leaks at least one filter detect, and the scanning means includes：
Elongated rotatable actuator；With
At least one travel mechanism, its can operate so that corresponding elongated scanning head on corresponding filter along
Perpendicular to the direction dislocation of the longitudinal direction of the scanning head, the scanning head covers the overall with of corresponding filter surfaces
Degree；And at least one travel mechanism is connected to the elongated rotatable actuator and by described elongated rotatable
Actuator start, the elongated rotatable actuator arrangement into parallel to the scanning head longitudinal direction extension.
14. a kind of filter housing, it includes the scanning device according to any one of claim 1 to 12, or according to
Scanning means described in claim 13.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1650849 | 2016-06-15 | ||
| SE1650849-1 | 2016-06-15 | ||
| SE1651059 | 2016-07-14 | ||
| SE1651059-6 | 2016-07-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107525629A true CN107525629A (en) | 2017-12-29 |
| CN107525629B CN107525629B (en) | 2021-03-12 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720697994.6U Active CN207622931U (en) | 2016-06-15 | 2017-06-15 | Scanning device, scanning means and filter housing |
| CN201710453201.0A Active CN107525629B (en) | 2016-06-15 | 2017-06-15 | Scanning device for filter leak detection |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720697994.6U Active CN207622931U (en) | 2016-06-15 | 2017-06-15 | Scanning device, scanning means and filter housing |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN207622931U (en) |
| WO (1) | WO2017216316A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274736A (en) * | 2019-07-19 | 2019-09-24 | 苏州凯尔森气滤系统有限公司 | A kind of bag goes out the leak detection sweep mechanism of filter into bag |
| CN112673214A (en) * | 2018-09-07 | 2021-04-16 | 美国空气过滤器股份有限公司 | Filter testing apparatus and method |
| CN114544084A (en) * | 2022-01-06 | 2022-05-27 | 苏州凯尔森气滤系统有限公司 | Vertical scanning leak detection mechanism |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3030245C (en) * | 2016-08-01 | 2024-02-06 | Curium Us Llc | Automated hepa filter integrity testing |
| CN114894387B (en) * | 2022-04-24 | 2023-03-21 | 苏州英德尔室内空气技术有限公司 | PAO leakage detection equipment for high-efficiency filter |
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- 2017-06-15 CN CN201720697994.6U patent/CN207622931U/en active Active
- 2017-06-15 CN CN201710453201.0A patent/CN107525629B/en active Active
- 2017-06-15 WO PCT/EP2017/064719 patent/WO2017216316A1/en active Application Filing
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| US4683762A (en) * | 1985-07-10 | 1987-08-04 | Aurich John P | Containment system |
| WO2007106003A1 (en) * | 2006-03-14 | 2007-09-20 | Camfil Ab | Air filter housing with means for measuring particle concentration |
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| CN112673214A (en) * | 2018-09-07 | 2021-04-16 | 美国空气过滤器股份有限公司 | Filter testing apparatus and method |
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| CN110274736A (en) * | 2019-07-19 | 2019-09-24 | 苏州凯尔森气滤系统有限公司 | A kind of bag goes out the leak detection sweep mechanism of filter into bag |
| CN114544084A (en) * | 2022-01-06 | 2022-05-27 | 苏州凯尔森气滤系统有限公司 | Vertical scanning leak detection mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN207622931U (en) | 2018-07-17 |
| WO2017216316A1 (en) | 2017-12-21 |
| CN107525629B (en) | 2021-03-12 |
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