CN218955835U - Fairing, fairing with fairing, and flowmeter - Google Patents
Fairing, fairing with fairing, and flowmeter Download PDFInfo
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- CN218955835U CN218955835U CN202222773291.0U CN202222773291U CN218955835U CN 218955835 U CN218955835 U CN 218955835U CN 202222773291 U CN202222773291 U CN 202222773291U CN 218955835 U CN218955835 U CN 218955835U
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Abstract
The utility model relates to the technical field of rectifying equipment, in particular to a rectifying cover, a rectifying device and a flowmeter device. The flow field flow control device aims at solving the technical problem that fluid flow in a flow field of the existing rectifying device is unstable. For this purpose, the cowling provided by the present application includes: the diversion structure comprises a diversion head part arranged on the middle flow layer and a diversion part connected with the diversion head part and gradually extending to the edge flow layer; the rectifying piece is arranged at the edge flow layer, the rectifying piece is provided with a rectifying hole communicated with the edge flow layer, and the inner side of the rectifying piece is provided with a flow layer communicated with the rectifying hole and converging the middle flow layer and the edge flow layer. The fairing of the utility model can reduce the phenomena of fast central flow velocity and slow edge flow velocity of fluid in the flow field through the diversion of the diversion structure, and can reduce the vortex phenomenon of fluid in the flow field through the rectification of the rectifying piece, and the stability of the flow field is improved through combining the diversion structure with the rectifying piece.
Description
Technical Field
The utility model relates to the technical field of rectifying equipment, in particular to a rectifying cover, a rectifying device with the rectifying cover and a flowmeter device.
Background
The metering accuracy of the flowmeter in the existing market has a great relation with the distribution condition of the fluid in the flow field. In order to achieve a better flow field for a flow meter, it is generally necessary to provide a longer straight tube section (at least 5 caliber long) in the front section of the flow meter and a straight tube section of 3 caliber long in the rear section of the flow meter.
Or a rectifying device such as an orifice plate or a honeycomb rectifying device needs to be arranged on the flowmeter. However, the rectifying device can only solve the problem of a single flow field, and if a front straight pipe section and a rear straight pipe section which are longer are installed, the space size requirement on the installation environment is high. If the space of the installation environment is narrow, the requirement of the flowmeter on the installation environment cannot be met. For the installation environment of urban commercial gas, the large installation space required by the flowmeter can also raise the installation cost of the flowmeter.
Moreover, the existing orifice plate and honeycomb rectifying device can only solve the single problem in the flow field, for example, the orifice plate rectifying device can effectively distribute the flow velocity but cannot eliminate the vortex, and the honeycomb rectifying device can effectively eliminate the vortex but has smaller adjusting effect on the flow velocity.
Disclosure of Invention
The present utility model aims to solve at least one technical problem in the related art to at least some extent.
To this end, a first aspect of the utility model provides a fairing comprising: the diversion structure comprises a diversion head part arranged on the middle flow layer and a diversion part connected with the diversion head part and gradually extending to the edge flow layer; the rectifying piece is arranged at the downstream of the flow guiding structure and is arranged on the edge flow layer, the rectifying piece is provided with a rectifying hole communicated with the edge flow layer, and a flow layer c communicated with the rectifying hole and converging the middle flow layer a and the edge flow layer b is formed at the inner side of the rectifying piece.
In addition, the fairing according to the utility model may have the following additional technical features:
according to one embodiment of the utility model, the flow dividing head is arranged as an arc-shaped head arranged opposite to the flow direction of the middle flow layer, and the flow guiding part is arranged as a conical structure with gradually increasing radial dimension along the flow direction of the middle flow layer.
According to one embodiment of the utility model, the arcuate head and the cone structure are provided as an integrally formed solid structure, and the fairing is provided as a hollow structure connected to the downstream end of the solid structure.
According to one embodiment of the utility model, the rectifying piece comprises a rectifying cylinder, the cylinder wall of the rectifying cylinder is arranged on the edge flow layer, and the cylinder wall is provided with a rectifying hole communicated with the flow guiding part.
According to an embodiment of the utility model, the fairing further comprises a mounting structure, the flow guiding structure and/or the fairing being provided with a mounting structure.
According to one embodiment of the utility model, the diameter of the large diameter end of the cone-shaped structure is D, and the inner diameter of the arc-shaped head ranges from 0.5D to 0.7D.
According to one embodiment of the present utility model, the diameter of the rectifying hole of the rectifying member is set to 5mm, the hole pitch is set to be not smaller than the diameter of the rectifying hole, and the minimum distance of the rectifying hole from the end of the rectifying member is 10mm.
According to one embodiment of the utility model, the inlet side of the rectifying hole is provided with an arc chamfer structure, and the radius R of the arc chamfer structure ranges from 0.3mm to 0.5mm.
A second aspect of the present utility model provides a flow meter device comprising: the rectifying device comprises a shell and a fairing, wherein a flow channel is formed in the shell, the fairing is arranged in the flow channel, and the fairing is a fairing according to the first aspect of the utility model; the flowmeter is arranged at the downstream of the rectifying device and is communicated with the rectifying device.
According to one embodiment of the utility model, the flow guiding structure of the fairing is arranged at the inlet position of the flow channel, and the fairing of the fairing is arranged at the outlet position of the flow channel.
The beneficial effects of the utility model are as follows: 1) The phenomenon that the fluid has fast central flow velocity and slow edge flow velocity in the flow field can be reduced by the diversion of the diversion structure; 2) The vortex phenomenon of fluid in a flow field can be reduced by rectification of the rectifying piece; 3) The flow stability of the fluid in the fairing can be improved by combining the flow guiding structure with the fairing, a stable flow field can be provided for the flowmeter, and the metering accuracy of the flowmeter is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of a flow meter apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a rectifying device according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of the fairing of FIG. 2;
FIG. 4 is an isometric view of a fairing of an embodiment of the utility model;
fig. 5 is a front view of a fairing according to an embodiment of the utility model.
Wherein, the reference numerals are as follows:
100. a flow meter device;
10. a rectifying device; 101. a fastener; 11. a housing; 111. mounting eaves; 112. a flange; 12. a fairing; 120. a flow guiding structure; 121. a shunt head; 122. a flow guiding part; 123. a rectifying member; 1231. a rectifying hole; 124. a mounting structure;
20. a flow meter;
a. a medium flow layer; b. an edge flow layer; c. and a flow layer.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, the application of the fairing to the flowmeter device is only a preferred embodiment, and is not a limitation on the application range of the fairing of the present utility model, for example, the fairing of the present utility model may also be applied to other fluid devices, etc., and such adjustment falls within the protection range of the fairing of the present utility model.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or the like, may include one or more such features, either explicitly or implicitly. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
For ease of description, spatially relative terms, such as "end," "middle," "upstream," "inner," "outer," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.
The existing rectifying device can only solve the problem of a single flow field, if the existing rectifying device can effectively distribute flow velocity but cannot eliminate vortex, and if the existing rectifying device can effectively eliminate vortex but has smaller adjusting effect on the flow velocity, or the problem of higher requirement on the space size of the installation environment exists.
In order to solve the technical problem that fluid flow in a flow field of existing rectifying equipment is unstable, an embodiment of the application provides a fairing, a rectifying device and a flowmeter device, and the fairing improves the stability of the flow field in a mode of combining a flow guiding structure with a rectifying piece.
FIG. 1 is a schematic diagram of a flow meter apparatus according to an embodiment of the present utility model; FIG. 2 is a schematic diagram of a rectifying device according to an embodiment of the present utility model; FIG. 3 is a cross-sectional view of the fairing of FIG. 2;
FIG. 4 is an isometric view of a fairing of an embodiment of the utility model; fig. 5 is a front view of a fairing according to an embodiment of the utility model.
As shown in fig. 1, the flow meter device 100 includes a fairing 12 and a flow meter 20, the flow meter 20 being disposed downstream of the fairing 12 and in communication with the fairing 12 for measuring the flow of fluid rectified by the fairing 12. As shown in fig. 2 and 3, the fairing 10 includes a housing 11 and a fairing 12, a flow passage is formed in the housing 11, the fairing 12 is disposed in the flow passage and is in clearance fit with the housing 11, and the fairing 12 is used for adjusting the fluid stability of the flow passage of the housing 11.
As shown in fig. 3 to 5, the fairing 12 includes a flow guiding structure 120 and a rectifying member 123, the flow guiding structure 120 includes a flow guiding portion 121 disposed on the middle flow layer a, and a flow guiding portion 122 connected to the flow guiding portion 121 and gradually extending toward the edge flow layer b, the rectifying member 123 is disposed downstream of the flow guiding structure 120, the rectifying member 123 is disposed on the edge flow layer b, the rectifying member 123 is provided with a rectifying hole 1231 communicating with the edge flow layer b, and a flow layer c communicating with the rectifying hole 1231 and converging the middle flow layer a and the edge flow layer b is formed on the inner side of the rectifying member 123.
In this embodiment, the flow guiding structure 120 includes a solid cone column or a hollow cone column, the outline of the outer wall of the flow guiding structure 120 is set to be a straight line or an arc surface, the rectifying part 123 includes a filter cylinder or a filter plate, the flow guiding structure 120 and the rectifying part 123 can be set to be integrated structures, and can also be set to be splice components formed by splicing, and these structures all belong to the protection scope of the embodiments of the present application.
The flow division of the flow guide structure 120 by the fairing 12 provided by the embodiment of the utility model can reduce the phenomena of fast central flow velocity and slow edge flow velocity of fluid in the flow field, and the vortex phenomenon of fluid in the flow field can be reduced by the rectification of the rectifying piece 123, so that the stability of the flow field is improved by combining the flow guide structure 120 with the rectifying piece 123.
Specifically, the utility model has the beneficial effects that: 1) The diversion through the diversion structure 120 can reduce the phenomena of fast central flow velocity and slow edge flow velocity of fluid in the flow field; 2) The flow rectification by the rectifying piece 123 can reduce the eddy current phenomenon of the fluid in the flow field; 3) By combining the flow guiding structure with the rectifying piece, the flow stability of the fluid in the rectifying cover 12 can be improved, a stable flow field can be provided for the flowmeter 20, and the metering accuracy of the flowmeter 20 is improved.
As shown in fig. 3 to 5, according to an embodiment of the present utility model, the diverting head 121 is provided as an arc-shaped head disposed facing the flow direction of the middle stream layer a, and the diverting part 122 is provided as a cone-shaped structure having a gradually increasing radial dimension along the flow direction of the middle stream layer a.
In this embodiment, the flow guiding portion 122 includes a small diameter end connected to the arc-shaped head portion and a large diameter end connected to the rectifying member 123, the outer contour of the arc-shaped head portion is set to be parabolic or spherical, taking the diameter D of the large diameter end of the flow guiding portion 122 as an example, the inner diameter range of the arc-shaped head portion is 0.5D-0.7D, and the inner diameter of the arc-shaped head portion is preferably 0.6D, so as to improve the flow splitting effect of the arc-shaped head portion, the inner diameter of the arc-shaped head portion is too small, the radial flow splitting effect of the arc-shaped head portion can be affected, and the inner diameter of the arc-shaped head portion is too large, so that fluid flowing through the arc-shaped head portion cannot flow along the flow guiding portion 122 in the radial direction excessively. Taking the example that the outer contour of the arc-shaped head is hemispherical, the small diameter end of the flow guiding part 122 intersects with the hemispherical center line of the arc-shaped head, and the total length of the arc-shaped head and the flow guiding part 122 is L 1 The inner diameter of the rectifying member 123 is D, and the total length of the rectifying member 123 is L 2 ，L1＝L 2＝ D, the diameter of the rectifying hole 1231 of the rectifying member 123 is set to 5mm, the hole pitch is set to be not smaller than the diameter of the rectifying hole 1231, the hole pitch is preferably set to 6mm, and the plurality of rectifying holes 1231 on the rectifying member 123 are set to be uniformly distributed, so that the rectifying effect of the rectifying member 123 is improved, if the hole pitch is set to be smaller than the diameter of the rectifying hole 1231, a large amount of fluid can be caused to flow to the inside of the rectifying member 123 directly through the rectifying hole 1231, the phenomenon that fluid at two adjacent rectifying holes 1231 is disturbed can occur, and the effect that the plurality of rectifying holes 1231 are independently rectified can not be achieved.
The minimum distance between the rectifying hole 1231 and the end part of the rectifying piece 123 is 10mm, the inlet side of the rectifying hole 1231 is provided with a tiny arc chamfer structure, and the radius R of the arc chamfer structure is about 0.3-0.5 mm, so that the purpose of guiding fluid through the arc chamfer structure is achieved, the rectifying effect of the rectifying piece 123 is improved, and if the minimum distance between the rectifying hole 1231 and the end part of the rectifying piece 123 is too large, the phenomenon that the fluid at the rectifying hole 1231 collides with the end part of the rectifying piece 123 to cause body disorder is caused, and the rectifying effect of the rectifying hole 1231 is reduced.
As shown in fig. 4 and 5, according to an embodiment of the present utility model, the arc-shaped head and the cone structure are provided as an integrally formed solid structure, and the rectifying member 123 is provided as a hollow structure connected to the downstream end portion of the solid structure.
In this embodiment, the rectifying member 123 is configured as a cylindrical thin plate structure or an arc thin plate structure, and the arc head, the cone structure and the rectifying member 123 are connected by welding, so that the welded portion has high tightness.
According to the embodiment of the application, the arc-shaped head and the cone-shaped structure are arranged to be of the solid structure which is integrally formed, so that the sealing performance between the arc-shaped head and the cone-shaped structure can be improved, and the backflow and vortex phenomena of fluid in the arc-shaped head and the cone-shaped structure can be reduced.
As shown in fig. 3 to 5, according to an embodiment of the present utility model, the rectifying member 123 includes a rectifying cylinder, a cylinder wall of which is disposed at the edge flow layer b, and the cylinder wall is provided with a rectifying hole 1231 communicating with the flow guiding part 122.
In this embodiment, the rectifying cylinder is circumferentially disposed around the middle flow layer a, so as to improve the flow uniformity of the fluid in the peripheral region of the middle flow layer a, thereby reducing the occurrence of vortex or turbulence phenomena of the fluid in the peripheral region of the middle flow layer a due to the flow velocity difference.
As shown in fig. 4 and 5, according to an embodiment of the present utility model, the flow guiding structure 120 and the rectifying member 123 are provided as a unitary structure.
In this embodiment, the flow guiding structure 120 and the rectifying element 123 are connected by welding, and the welded portion has high tightness, so that the smoothness of fluid flowing between the flow guiding structure 120 and the rectifying element 123 can be improved.
Specifically, taking the diameter D of the large diameter end of the flow guiding portion 122 as an example, the inner diameter of the arc-shaped head portion is about 0.6D, the small diameter end of the flow guiding portion 122 intersects with the hemispherical center line of the arc-shaped head portion, the inner diameter D of the rectifying member 123 is set to be the same as the diameter D of the large diameter end of the flow guiding portion 122, and a welding foundation is provided for welding the flow guiding structure 120 and the rectifying member 123.
As shown in fig. 4 and 5, the fairing 12 further includes a mounting structure 124, and the flow directing structure 120 and/or the fairing 123 are provided with the mounting structure 124 in accordance with an embodiment of the utility model.
In this embodiment, the fairing 12 is configured as an independent component, and the fairing 12 is mounted to the fairing 10 or the flowmeter 100 through the mounting structure 124, so that the fairing 12 does not affect the structural design of the fairing 10 or the flowmeter 100, thereby effectively improving the universality of the fairing 12, facilitating the maintenance and upgrading of the fairing 12, and reducing the maintenance cost of products.
According to one embodiment of the present utility model, the diameter of the large diameter end of the cone-shaped structure (the flow guiding part 122) is D, the inner diameter of the arc-shaped head ranges from 0.5D to 0.7D, and the inner diameter of the arc-shaped head is preferably 0.6D.
In this embodiment, the flow guiding portion 122 includes a small diameter end connected to an arc-shaped head portion and a large diameter end connected to the rectifying member 123, the outer contour of the arc-shaped head portion is parabolic or spherical, the diameter D of the large diameter end of the flow guiding portion 122 is taken as an example, the inner diameter of the arc-shaped head portion is about 0.6D, the outer contour of the arc-shaped head portion is taken as a hemispherical example, the small diameter end of the flow guiding portion 122 intersects with the hemispherical center line of the arc-shaped head portion, and the total length of the arc-shaped head portion and the flow guiding portion 122 is L 1 The inner diameter of the rectifying member 123 is D, and the total length of the rectifying member 123 is L 2 ，L1＝L 2＝ D, thereby improving the flow efficiency of the flow guiding portion 122.
According to one embodiment of the present utility model, the diameter of the rectifying holes 1231 of the rectifying member 123 is set to 5mm, the hole pitch is set to be not smaller than the diameter of the rectifying holes, the hole pitch is preferably set to 6mm, and the minimum distance of the rectifying holes 1231 from the end of the rectifying member 123 is 10mm.
In this embodiment, the end of the rectifying hole 1231 away from the rectifying piece 123 includes the end of the rectifying hole 1231 connected with the flow guiding structure 120 away from the rectifying piece 123, and includes the end of the rectifying hole 1231 away from the flow guiding structure 120 away from the rectifying piece 123, which improves the flow efficiency of the fluid flowing from the rectifying piece 123 by reasonably distributing the rectifying holes 1231.
According to one embodiment of the present utility model, the inlet side of the rectification hole 1231 is provided with a circular arc chamfer structure having a radius R ranging from 0.3mm to 0.5mm.
In this embodiment, the inlet side of the rectifying hole 1231 is provided with a minute circular arc chamfer structure, and the radius R of the circular arc chamfer structure is about 0.3mm to R0.5mm, so as to achieve the purpose of guiding the fluid through the circular arc chamfer structure.
As shown in fig. 1 to 3, a second aspect of the present utility model provides a flow meter device 100, the flow meter device 100 including a flow meter 10 and a flow meter 20, the flow meter 10 including a housing 11 and a fairing 12, a flow passage being formed inside the housing 11, the fairing 12 being provided in the flow passage, the fairing 12 being the fairing 12 according to the first aspect of the present utility model, the flow meter 20 being provided downstream of the flow meter 10 and communicating with the flow meter 10.
In the present embodiment, the flowmeter apparatus 100 may be provided with the housing 11 outside the fairing 12, or may be provided with the flange 112 attached to the flowmeter 20 without providing the housing 11 outside the fairing 12, and in the case where the housing 11 is provided outside the fairing 12.
Specifically, since the total length of the arc-shaped head portion and the flow guiding portion 122 is L 1 The inner diameter of the rectifying member 123 is D, and the total length of the rectifying member 123 is L 2 ，L 1 ＝L 2 =d, therefore, the embodiment of the present application proposes to set the length of the housing 11 to 2L 1 Or L 2 Or D so that the housing 11 has enough interior space to house the arcuate head portion, the flow guide 122, and the fairing 123.
As shown in fig. 2 and 3, according to an embodiment of the present utility model, the flow guiding structure 120 of the fairing 12 is disposed at an inlet position of the flow channel, and the fairing 123 of the fairing 12 is disposed at an outlet position of the flow channel.
In this embodiment, the flow dividing head 121 of the flow guiding structure 120 is disposed at an inlet position of the flow channel, and is used for dividing the fluid at the middle flow layer a of the inlet position, dividing the fluid at the inlet position to the edge flow layer b, reducing the phenomena of fast central flow rate and slow edge flow rate of the fluid in the flow channel, and the rectifying member 123 is disposed at an outlet position of the flow channel, and is used for rectifying the fluid at the edge flow layer b, and reducing the phenomena of vortex or turbulence of the fluid at the edge flow layer b.
As shown in fig. 2 and 3, according to an embodiment of the present utility model, the housing 11 is provided at an outlet position with a mounting brim 111 extending in a direction of the flow path, and the mounting brim 111 cooperates with a mounting structure 124 of the rectifying member 123 to seal a gap outlet between the rectifying member 123 and the housing 11.
In the present embodiment, by the fitting of the mounting eave 111 and the mounting structure 124, not only the fairing 12 and the housing 11 but also the clearance outlet between the fairing 123 and the housing 11 are sealed, and the leakage phenomenon of the fluid in the housing 11 at the clearance between the fairing 123 and the housing 11 without passing through the fairing holes 1231 of the fairing 12 is reduced.
Specifically, the mounting eaves 111 and the mounting structure 124 are each provided in an annular structure, and the mounting eaves 111 and the mounting structure 124 are each provided with fastening holes, and the mounting eaves 111 and the mounting structure 124 are connected by the fasteners 101.
The flowmeter device 100 provided by the embodiment of the utility model has the beneficial effects that:
the fairing 12 is independent of the flowmeter device 100, the fairing 12 does not influence the structural design of the flowmeter device 100, the universality of products is effectively improved, the maintenance and upgrading of old products are facilitated, and the maintenance cost of the products is reduced;
compared with the flowmeter device 100 without the fairing 12, the flowmeter device 100 of the embodiment of the application can effectively reduce the pipe diameter size of the flowmeter device 100, requires smaller installation space, reduces the requirement of the flowmeter device 100 on the use environment, and reduces the installation cost of the flowmeter device 100;
the flow entering the fairing 12 can reduce the phenomena of fast central flow velocity and slow edge flow velocity of the fluid in the flow field after being split by the flow guiding structure 120, and can obtain a flow field with more uniform flow velocity;
the fluid entering the fairing 12 can reduce the eddy current phenomenon of the fluid in the flow field by rectifying through the rectifying piece 123, eliminate the flow field fluctuation caused by the pressure change of the pipeline, and eliminate the influence of the pressure jump on the metering accuracy of the flowmeter device 100;
by combining the flow guiding structure 120 and the rectifying member 123, the stability of the flow field is improved, layering and vortex phenomena in the flow field are effectively eliminated, and the metering accuracy of the flowmeter device 100 is improved.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. A fairing, the fairing comprising:
the diversion structure comprises a diversion head part arranged on the middle flow layer and a diversion part connected with the diversion head part and gradually extending to the edge flow layer;
the rectifying piece is arranged at the downstream of the flow guiding structure, the rectifying piece is arranged on the edge flow layer, the rectifying piece is provided with a rectifying hole communicated with the edge flow layer, and the inner side of the rectifying piece is provided with a flow layer communicated with the rectifying hole and converging the middle flow layer and the edge flow layer.
2. The fairing as recited in claim 1, wherein said diverter head is configured as an arcuate head disposed head-on with respect to a flow direction of said middling flow layer, said diverter being configured as a tapered structure of progressively increasing radial dimension along the flow direction of said middling flow layer.
3. The fairing as recited in claim 2, wherein said arcuate head is provided as an integrally formed solid structure with said cone structure and said fairing is provided as a hollow structure attached to a downstream end of said solid structure.
4. The fairing as recited in claim 1, wherein said fairing comprises a fairing cylinder, a cylinder wall of said fairing cylinder is disposed in said edge flow layer, and said cylinder wall is provided with said fairing holes in communication with said flow guide.
5. The fairing as recited in claim 1, wherein said fairing further comprises a mounting structure, said flow guiding structure and/or said fairing being provided with said mounting structure.
6. The fairing of claim 2 wherein said cone-shaped structure has a major diameter end diameter D and said arcuate head has an inner diameter in the range of 0.5D to 0.7D.
7. The fairing as recited in claim 1, wherein said fairing holes of said fairing are set to 5mm in diameter, a hole spacing is set to be no less than a diameter of said fairing holes, and a minimum distance of said fairing holes from an end of said fairing is 10mm.
8. The fairing according to claim 1, wherein the inlet side of the fairing holes is provided with a circular arc chamfer structure having a radius R in the range of 0.3mm to 0.5mm.
9. A flow meter device, the flow meter device comprising:
a fairing comprising a housing and a fairing, the interior of the housing being formed with a flow passage, the fairing being provided in the flow passage, the fairing being a fairing according to any one of claims 1 to 8;
the flowmeter is arranged at the downstream of the rectifying device and is communicated with the rectifying device.
10. The flowmeter device of claim 9, wherein the flow directing structure of the fairing is disposed at an inlet location of the flow path and the fairing is disposed at an outlet location of the flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222773291.0U CN218955835U (en) | 2022-10-20 | 2022-10-20 | Fairing, fairing with fairing, and flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222773291.0U CN218955835U (en) | 2022-10-20 | 2022-10-20 | Fairing, fairing with fairing, and flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218955835U true CN218955835U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222773291.0U Active CN218955835U (en) | 2022-10-20 | 2022-10-20 | Fairing, fairing with fairing, and flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218955835U (en) |
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2022
- 2022-10-20 CN CN202222773291.0U patent/CN218955835U/en active Active
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