CN206556712U - Fairing - Google Patents
Fairing Download PDFInfo
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- CN206556712U CN206556712U CN201720071878.3U CN201720071878U CN206556712U CN 206556712 U CN206556712 U CN 206556712U CN 201720071878 U CN201720071878 U CN 201720071878U CN 206556712 U CN206556712 U CN 206556712U
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- rectification
- plate
- inner hole
- orifice plate
- hole
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- 239000012530 fluid Substances 0.000 claims abstract description 58
- 230000000694 effects Effects 0.000 description 20
- 238000009826 distribution Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model provides a kind of fairing, is arranged in body, including：Orifice plate and at least one rectification inner hole plate outside the rectification that the direction for flowing through body along fluid is set gradually；The outer orifice plate of rectification and each rectification inner hole plate are respectively arranged with multiple plate holes along the flow direction extension of fluid.The purpose of this utility model, which is that offer is a kind of, can carry out the fairing of multi-stage rectifying.
Description
Technical field
The utility model is related to rectifier technical field, more specifically, is related to a kind of fairing.
Background technology
Domestic and international achievement in research shows, during fluid flow metering, for example, during gas metering, orifice plate
Flowmeter, ultrasonic flowmeter and turbine flowmeter etc. require that gas has preferable fluidised form accurately to measure, but specific
In, particularly in industrial settings, more serious flowing interference, remittance tracheae, separator and tune can be produced in ducts upstream
The section interference of the common equipment to fluidised form such as valve needs straight length more than 145D (D is inside diameter of straight pipe section) to eliminate, this be because
For, when gas flows through straight length, straight length is provided for a main flow direction, so gas only flow through it is sufficiently long
After straight length, be possible to so that the chaotic gas being disturbed gradually is stablized originally.The length requirement of straight length can undoubtedly be wasted
Conduit resource.This interference is generally eliminated using rectifier (or flow conditioner) both at home and abroad at present, to shorten straight length
Length and the raising accuracy of measuring.But, current most of rectifiers only pass through a rectification, and the rectification of stream field is played really
Certain effect, but its rectification effect is poor, repeatability is low.
Utility model content
For problem present in correlation technique, the purpose of this utility model is that multi-stage rectifying can be carried out by providing one kind
Fairing.
To achieve the above object, the utility model provides a kind of fairing, is arranged in body, including：Along fluid
Flow through the outer orifice plate of rectification and at least one rectification inner hole plate that the direction of body is set gradually；In rectification outer orifice plate and each rectification
Orifice plate is respectively arranged with multiple plate holes along the flow direction extension of fluid.
According to one embodiment of the present utility model, the structure of the outer orifice plate of rectification and the plate hole on rectification inner hole plate is completely not
With or it is identical at least in part.
According to one embodiment of the present utility model, the plate hole on the outer orifice plate of rectification and the plate hole on rectification inner hole plate are each other
Alignment is biased.
According to one embodiment of the present utility model, plate hole is respectively outside rectification on orifice plate and/or each rectification inner hole plate
Equably arrange.
According to one embodiment of the present utility model, the hole area and the internal diameter of body of whole plate holes on the outer orifice plate of rectification
Area ratio is 3:5 to 4:In the range of 5.
According to one embodiment of the present utility model, the ratio between the thickness of the outer orifice plate of rectification and the internal diameter of body are 9:25 to 3:
In the range of 5.
According to one embodiment of the present utility model, the hole area and the internal diameter of body of whole plate holes on rectification inner hole plate
Area ratio is 7:10 to 9:In the range of 10.
According to one embodiment of the present utility model, the thickness of rectification inner hole plate and the internal diameter area ratio of body are 1:2
To 2:In the range of 3.
According to one embodiment of the present utility model, the outer orifice plate of rectification with rectification outside the adjacent rectification inner hole plate of orifice plate it
Between spacing and adjacent rectification inner hole plate between spacing range be L >=1D, wherein, D is the internal diameter of body.
According to one embodiment of the present utility model, the outer orifice plate of rectification with rectification outside the adjacent rectification inner hole plate of orifice plate it
Between and adjacent rectification inner hole plate between communicated with each other by bushing pipe.
Advantageous effects of the present utility model are：
The fairing that the utility model is related to, by setting orifice plate and at least one rectification endoporus outside rectification in body
Plate, can be to carrying out multi-stage rectifying so that the fluid for flowing through fairing is uniform and stable by the fluid of fairing.
Brief description of the drawings
Fig. 1 is the scheme of installation according to the utility model one embodiment fairing.
Embodiment
Below with reference to accompanying drawing, embodiment of the present utility model is described in detail.
As shown in figure 1, one embodiment of the present utility model provides a kind of fairing.The fairing is arranged on pipe
In body 12, also, the fairing includes：Orifice plate 14 and at least outside the rectification that the direction for flowing through body 12 along fluid is set gradually
One rectification inner hole plate 16；The outer orifice plate 14 of rectification and each rectification inner hole plate 16 are respectively arranged with the flow direction extension along fluid
Multiple plate holes.
So, fluid enters after fairing, first passes around the outer orifice plate 14 of rectification and carries out one-level rectification, then passes sequentially through whole
Stream inner hole plate 16 carries out rectification again.
In the above-described embodiments, by setting orifice plate 14 and at least one rectification inner hole plate 16 outside rectification in body 12,
Can be to carrying out multi-stage rectifying by the fluid of fairing so that the fluid for flowing through fairing is uniform and stable.
According to one embodiment of the present utility model, the structure of the outer orifice plate 14 of rectification and the plate hole on rectification inner hole plate 16 can
With entirely different.Or, in another embodiment, the structure of the outer orifice plate 14 of rectification and the plate hole on rectification inner hole plate 16 is at least
It is partly identical.
According to one embodiment of the present utility model, the plate hole on the outer orifice plate 14 of rectification and the plate hole on rectification inner hole plate 16
It can be in alignment with each other.Or, in another embodiment, the plate hole on the outer orifice plate 14 of rectification and the plate hole on rectification inner hole plate 16
It can also offset with respect to each.
According to one embodiment of the present utility model, plate hole orifice plate 14 and/or each rectification inner hole plate outside rectification respectively
Equably arranged on 16.So, when fluid enters fairing, the VELOCITY DISTRIBUTION of fluid is uniform.
According to one embodiment of the present utility model, the hole area and body 12 of whole plate holes on the outer orifice plate 14 of rectification
Internal diameter area ratio is 3:5 to 4:In the range of 5.
Preferably, in one embodiment, the internal diameter of the hole area and body 12 of whole plate holes on the outer orifice plate 14 of rectification
Area ratio is 3:5.This is because, when area than it is too small when, the pressure loss is larger.For example, by analog simulation in flow velocity
25m/s, area ratio is less than 3:When 5, the pressure loss is larger, more than 2KPa.On the other hand, when plate product than it is too big when, again can be because of
Reduction to fluid barrier effect, influences rectification effect.
According to one embodiment of the present utility model, the ratio between the thickness of the outer orifice plate 14 of rectification and the internal diameter of body 12 are 9:25
To 3:In the range of 5.
If the outer thickness of orifice plate 14 of rectification is too thin, the effect of rectification is not had；If the outer thickness of orifice plate 14 of rectification is too big, again
The pressure loss can be increased.It is preferred that in one embodiment, the internal diameter of the thickness and body 12 of the outer orifice plate 14 of rectification
The ratio between be 9:25, so, the fluid of Non-Uniform Flow is sufficiently expressed in plate hole, sufficiently mixing is enabled a fluid to, obtains
To homogeneous (uniform) fluid.
According to one embodiment of the present utility model, hole area and the body 12 of whole plate holes on rectification inner hole plate 16
Internal diameter area ratio is 7:10 to 9:In the range of 10.Certainly, as the case may be, above-mentioned area ratio can also be in other models
Enclose, the utility model is not limited to this.
In addition, when above-mentioned area ratio is less than 7:When 10, the pressure loss is larger；And area than it is too big when, rectification is not had again
Effect.And, although area ratio is 7:10 to 9:During 10 scope, the rectification effect of fluid is more or less the same, but area ratio
9:Pressure Loss Ratio 7 when 10:Crushing is small when 10, therefore, in a preferred embodiment, whole plate holes on rectification inner hole plate 16
The internal diameter area ratio of hole area and body 12 is 9:10.
According to one embodiment of the present utility model, the thickness of rectification inner hole plate 16 exists with the internal diameter area ratio of body 12
1:2 to 2:In the range of 3.
If the thickness of rectification inner hole plate 16 is too small, rectification effect can be caused poor；If the thickness of rectification inner hole plate 16
It is too big, the pressure loss can be increased.Therefore, in a preferred embodiment, the thickness of rectification inner hole plate 16 and body 12
Internal diameter area ratio is 1:2.
According to one embodiment of the present utility model, the outer orifice plate 14 of the rectification rectification endoporus adjacent with the outer orifice plate 14 of rectification
Spacing range between spacing between plate 16 and adjacent rectification inner hole plate 16 is L >=1D, wherein, D is interior for body 12
Footpath.
According to one embodiment of the present utility model, the outer orifice plate 14 of the rectification rectification endoporus adjacent with the outer orifice plate 14 of rectification
Communicated with each other between plate 16 and between adjacent rectification inner hole plate 16 by bushing pipe 18.Bushing pipe 18 by orifice plate outside rectification 14 with
The rectification inner hole plate 16 adjacent with orifice plate outside rectification 14 and adjacent rectification inner hole plate 16 are isolated, multistage whole to be formed
Fluid space structure.
As shown in figure 1, one embodiment of the present utility model provides a kind of fairing, orifice plate 14, rectification outside rectification
Inner hole plate 16 is constituted.Wherein, the fluid in body 12 enters after fairing, and the rectification orifice plate first passed around is the outer orifice plate of rectification
14, remaining rectification orifice plate is rectification inner hole plate 16.
During the effect of the outer orifice plate 14 of rectification first order rectification is provided for fluid；Rectification inner hole plate 16 is used to provide many for fluid
Level rectification.It is to be understood that in fairing, being provided with least one rectification inner hole plate 14.
In one further embodiment, fairing also includes, and bushing pipe 18 can also be set between rectification orifice plate.
Bushing pipe 18 can be isolated multiple rectification orifice plates, form multi-stage rectifying space structure.
The plate hole structure of the outer orifice plate 14 of rectification and rectification inner hole plate 16 can be triangle, square, polygon, circular hole
The plate hole structure of the structures such as shape, honeycombed, the outer orifice plate 14 of rectification and rectification inner hole plate 16 be able to can also be differed with identical.
The outer plate hole between orifice plate 14 and rectification inner hole plate 16 and rectification inner hole plate 16 of rectification can align setting,
Setting can not lined up.
Specifically, in an alternative embodiment, the outer orifice plate 14 of rectification is perfectly even distributed the circular plate hole of multiple size identicals.
Equally distributed advantage is：When fluid enters fairing, the VELOCITY DISTRIBUTION of fluid is uniform, and asymmetric plate hole may
Aggravate the inhomogeneities of VELOCITY DISTRIBUTION, be uniformly distributed it is advantageous to plate hole.
Preferably, it is equally distributed on the outer orifice plate 14 of rectification and/or rectification inner hole plate 16 to have 19 or 37 plate holes.Plate hole number
Mesh can cause fluid flow area to diminish too much, and crushing becomes big；Plate hole number is very few, can not have the effect of rectification.
The plate hole area sum of whole plate holes of the outer orifice plate 14 of rectification and the measurement internal diameter area ratio about 3 of body 12:5 to 4：
5, preferably 3:5.The reasons why selecting this number range be：On the one hand, area than it is too small when, the pressure loss is larger.For example, passing through mould
Intend emulation in flow velocity 25m/s, area ratio is less than 3:When 5, the pressure loss is larger, more than 2KPa.On the other hand, plate hole area ratio is too
When big, rectification effect can be influenceed because of the reduction to fluid barrier effect again.
The ratio of the thickness of orifice plate 14 and the internal diameter of body 12 is 9 outside rectification:25 to 3:5, preferably 9:25, select this numerical value
The reasons why scope is：The fluid of Non-Uniform Flow is sufficiently expressed in plate hole, sufficiently mixing is enabled a fluid to, obtains
Uniform flow body.The thickness of the outer orifice plate 14 of rectification is too thin, does not have the effect of rectification；The thickness of the outer orifice plate 14 of rectification is too thick, can make again
Pressure loss increase is obtained, is considered, the thickness of the outer orifice plate 14 of rectification and the suitable scope of the ratio of the internal diameter of body 12 are 9:25
To 3:5, effect most preferably 9:25.
During the main function of rectification inner hole plate 16：Because eddy flow and bias current are done basic handling by the outer orifice plate 14 of rectification, whole
It is again uniform and stable fluid by remaining eddy flow and bias current rectification to flow inner hole plate 16.
Preferably, the plate hole area sum of whole plate holes of rectification inner hole plate 16 with measurement the internal diameter area ratio of body 12 and/
Or the number of plate hole is no less than the outer orifice plate 14 of rectification.
The plate hole area sum of whole plate holes of rectification inner hole plate 16 is 7 with measurement body 12 internal diameter area ratio:10 to 9:
10, preferably 9:10, reason is：On the one hand it is because area ratio is less than 7:When 10, the pressure loss is larger；Area than it is too big when, again
The effect of rectification is not had；In addition, area ratio is 7:10 to 9:During 10 scope, the rectification effect of fluid is more or less the same, because
Area ratio is 9:Pressure Loss Ratio 7 when 10:Crushing is small when 10, and it is advantageous to 9:10.
The honeycomb-shaped structure that rectification inner hole plate 16 is perfectly even distributed.It is other shapes because honeycomb-shaped structure compares
Pore structure, can have larger plate hole area.
The thickness of rectification inner hole plate 16 is not limited.When detected fluid be disturbed degree it is more serious when, rectification inner hole plate 16
Thickness can be more than the thickness of the outer orifice plate 14 of rectification；When detected fluid be disturbed degree it is relatively low when, the thickness of rectification inner hole plate 16
Degree can be less than the thickness of the outer orifice plate 14 of rectification, can be a millimetre-sized thin slice.Preferably, the thickness of rectification inner hole plate 16 with
The ratio of the internal diameter of body 12 is 1:2 to 2:3, most preferably 1:2.The thickness of rectification inner hole plate 16 is too thin, and rectification effect is poor；In rectification
The thickness of orifice plate 16 is too big, the pressure loss can be increased.Consider in rectification effect and the pressure loss, most preferred rectification
The thickness of orifice plate 16 and the ratio of the internal diameter of body 12 are 1:2.
Preferably, when rate of flow of fluid is 25m/s, the whole fairing pressure loss is less than 3KPa, wherein rectification exit orifice
The pressure loss of plate 14 is less than 2KPa, and the pressure loss of rectification inner hole plate 16 is less than 1KPa.
In one embodiment, air-flow passes through after fairing, is measured by sensor, sensor distance rectification
The certain distance of inner hole plate 16, preferably 2D to 10D, most preferably 2.5D.Reason is：The fluid flowed out from fairing is jet
State, it is necessary to pass through straight-run of pipe, is sufficiently mixed fluid, forms one and is well mixed stable Flow Field Distribution state, ability
Enable the sensor to perceive the true flow velocity of fluid.Shown by a large amount of analog simulation results, apart from rectification inner hole plate 16
When distance is not less than 2D, fluid flow state may be at stable uniform admixture；When apart from ＞ 10D, it can increase again tested
The length of fluid body, wastes body resource and measurement apparatus volume.
Between the outer orifice plate 14 of rectification and the rectification inner hole plate 16 adjacent the outer orifice plate 14 of rectification and adjacent rectification endoporus
Spacing range between plate 16 is L >=1D, and it is the internal diameter of body 12 preferably to take 1.5D, wherein D, and L is between two orifice plate
Spacing.Because, fluid stream is after previous orifice plate, and the process expanding equivalent to fluid, can make the stream of fluid in bushing pipe 18
Field distribution is further well mixed.In theory, L is bigger, and effect is more obvious, but in actual applications due to body overall length
Degree limitation, preferably takes 1.5D.
The working method of fairing：Fluid enters whole for the first time through the progress of orifice plate outside over commutation 14 after test body 12
Stream：Air-flow from body 12 flow into rectification outside orifice plate 14 when, due to orifice plate 14 outside rectification plate hole area sum be less than body 12 in
Footpath area, fluid is extruded speedup, can be expressed to the heterogeneous fluid of diverse location in one plate hole, be mixed,
In one section of the downstream region of plate hole, fluid meets general hole jet flow rule, has a uniform jet cone, in jet cone
Downstream and the interval of surrounding, form stronger turbulent jet flow, and jet internal flow is quickly mixed with surrounding fluid.Due to fairing
In, there are multiple plate hole structures, multiple hole jets will be formed, then stronger mixed process also occurs between jet and jet.
After it have passed through extruding, jet and mixed zone, fluid will become relatively more uniform；But only through over commutation exit orifice plate 14 1
Secondary rectification, fluid can also the remaining non-uniform Distribution such as eddy flow and bias current fluid flow state, the fluid that orifice plate 14 comes out outside rectification,
After bushing pipe 18, into rectification inner hole plate 16, one or more rectification inner hole plates 16 can be non-by remaining eddy flow and bias current etc.
Equally distributed fluid flow state rectification is uniform and stable fluid.Carried out via rectification inner hole plate 16 after multi-stage rectifying, fluid meeting
Uniform and stable fluidised form is formed, and then the detection air-flow stablized is provided for sensor.
Above-described embodiment to fluid by carrying out multi-stage rectifying so that fluid forms uniform and stable after fairing
Flow field, so that flow sensor detection is more accurate.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of fairing, is arranged in body (12), it is characterised in that including：The body (12) is flowed through along fluid
The outer orifice plate (14) of rectification and at least one rectification inner hole plate (16) that direction is set gradually；The outer orifice plate (14) of the rectification and each
The rectification inner hole plate (16) is respectively arranged with multiple plate holes along the flow direction extension of fluid.
2. fairing according to claim 1, it is characterised in that the outer orifice plate (14) of the rectification and the rectification endoporus
The structure of the plate hole on plate (16) is entirely different or identical at least in part.
3. fairing according to claim 1, it is characterised in that the plate hole on the outer orifice plate (14) of the rectification with
The plate hole on the rectification inner hole plate (16) is in alignment with each other or biased.
4. fairing according to claim 1, it is characterised in that plate hole orifice plate (14) outside the rectification respectively
And/or equably arranged on each rectification inner hole plate (16).
5. fairing according to claim 1, it is characterised in that the whole plate on the outer orifice plate (14) of the rectification
The internal diameter area ratio of the hole area in hole and the body (12) is 3:5 to 4:In the range of 5.
6. fairing according to claim 1, it is characterised in that the thickness and the pipe of the outer orifice plate (14) of the rectification
The ratio between internal diameter of body (12) is 9:25 to 3:In the range of 5.
7. fairing according to claim 1, it is characterised in that the whole plate on the rectification inner hole plate (16)
The internal diameter area ratio of the hole area in hole and the body (12) is 7:10 to 9:In the range of 10.
8. fairing according to claim 1, it is characterised in that the thickness of the rectification inner hole plate (16) and the pipe
The internal diameter area ratio of body (12) is 1:2 to 2:In the range of 3.
9. fairing according to claim 1, it is characterised in that the outer orifice plate (14) of the rectification with and the rectification outside
Between spacing between the adjacent rectification inner hole plate (16) of orifice plate (14) and the adjacent rectification inner hole plate (16)
Spacing range is L >=1D, wherein, D is the internal diameter of the body (12).
10. fairing according to claim 1, it is characterised in that the outer orifice plate (14) of the rectification and and the rectification
Pass through lining between the adjacent rectification inner hole plate (16) of outer orifice plate (14) and between the adjacent rectification inner hole plate (16)
Pipe (18) communicates with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071878.3U CN206556712U (en) | 2017-01-20 | 2017-01-20 | Fairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720071878.3U CN206556712U (en) | 2017-01-20 | 2017-01-20 | Fairing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556712U true CN206556712U (en) | 2017-10-13 |
Family
ID=60359822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720071878.3U Active CN206556712U (en) | 2017-01-20 | 2017-01-20 | Fairing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556712U (en) |
-
2017
- 2017-01-20 CN CN201720071878.3U patent/CN206556712U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230511 Address after: 300392 North 2-204 Industrial Incubator-5-1039, No. 18, Haitai West Road, Huayuan Industrial Zone, Binhai New Area, Tianjin Patentee after: Tianjin Xinzhi Perception Technology Co.,Ltd. Address before: 065001 B, South District, new Austrian Science and Technology Park, Huaxiang Road, Langfang economic and Technological Development Zone, Hebei Patentee before: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |