CN207675249U - Multistage shrinks rectifier - Google Patents
Multistage shrinks rectifier Download PDFInfo
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- CN207675249U CN207675249U CN201820104089.XU CN201820104089U CN207675249U CN 207675249 U CN207675249 U CN 207675249U CN 201820104089 U CN201820104089 U CN 201820104089U CN 207675249 U CN207675249 U CN 207675249U
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- rectification
- rectifier
- pipeline section
- rectification pipeline
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Abstract
The utility model provides a kind of multistage contraction rectifier, including shell, and rectifier structure is provided in the shell, the rectifier structure includes multiple rectification pipeline sections, and for each rectification pipeline section, nozzle tapers into, and along fluid flow direction, the inclination angle of rectification pipeline section becomes smaller again after becoming larger.The utility model is by being arranged rectifier structure, and the nozzle of each rectification pipeline section itself in rectifier structure is made to taper into, the nozzle gradient of each rectification pipeline section is become smaller again after becoming larger, it can be substantially reduced the otherness of fluid flow fields in large diameter pipeline in this way, realize abundant rectification, and crushing and energy consumption can be reduced, flow measurement is carried out under the premise of rectification is sufficient, the accuracy of flow measurement can be improved.
Description
Technical field
The utility model belongs to fluid rectification field, and in particular to a kind of multistage contraction rectifier.
Background technology
It often will appear the large diameter pipeline for trandfer fluid at actual industrial scene at present, study and send out through applicant
Existing, with the gradual increase of pipe diameter, straight pipe is difficult to meet standard requirement before instrument, and pipeline flow field changes greatly, profit
With traditional flowmeter carry out flow measurement existing for error it is also bigger.Particularly, (such as curved to large diameter pipeline resistance piece
Head) output flow when measuring error bigger can extend resistance to improve the accuracy of resistance piece output flow measurement
The straight pipe being connected after power part, then flow measurement will be carried out in the straight pipe of traditional flowmeter insert the distance resistance piece farther out,
But industry spot more space can be occupied again in this way.
In order to improve fluid measurement accuracy in large diameter pipeline, before being measured to fluid, need to fluid into
Row rectification.Traditional rectifier includes bundled tube rectifier, multiaperture-type rectifier etc., but these rectifiers can not convection current
Body flow field carries out abundant rectification, even if after rectification, there is still a need for be arranged apart from large diameter pipeline resistance piece farther out straight for flowmeter
On pipeline section, and the crushing of conventional rectifier is larger, energy consumption is higher.
Utility model content
The utility model provide it is a kind of it is multistage shrink rectifier, with solve current rectifier rectification effect is poor, crushing compared with
The big and higher problem of energy consumption.
According to the utility model embodiment in a first aspect, providing a kind of multistage contraction rectifier, including shell, the shell
It is provided with rectifier structure in vivo, the rectifier structure includes multiple rectification pipeline sections, and for each rectification pipeline section, nozzle gradually becomes
Small, and along fluid flow direction, the inclination angle of rectification pipeline section becomes smaller again after becoming larger.
In an optional implementation manner, the shell is arranged in the output end of resistance of ducting part or pipeline resistance
On the connected straight pipe any position of the output end of power part.
In another optional realization method, the output end of the resistance of ducting part includes the defeated of large diameter pipeline elbow
Outlet.
In another optional realization method, the rectification pipeline section is five sections, wherein along the fluid flow direction, the
The inclination angle of one rectification pipeline section is less than the inclination angle of the second rectification pipeline section, the second rectification pipeline section inclining to the 5th rectification pipeline section
Oblique angle is gradually reduced, and the inclination angle of the 5th rectification pipeline section is 0, and the first rectification pipeline section connects with the inner walls.
In another optional realization method, fixed plate is provided between the rectifier structure and the inner walls.
In another optional realization method, it is provided with first through hole on the 5th rectification pipeline section, on the shell
It is provided with the second through-hole corresponding with the first through hole, so that flowmeter sequentially passes through second through-hole, first through hole
It is inserted into the 5th rectification pipeline section.
The utility model has the beneficial effects that：
1, the utility model is by being arranged rectifier structure, and make the nozzle of each rectification pipeline section itself in rectifier structure by
Gradual change is small, and the nozzle gradient of each rectification pipeline section is become smaller again after becoming larger, and can be substantially reduced in large diameter pipeline in this way
The otherness of fluid flow fields realizes abundant rectification, and crushing is smaller, energy consumption is relatively low, is flowed under the premise of rectification is sufficient
Measurement can improve the accuracy of flow measurement；
2, after fluid flows through resistance piece when the utility model is particularly suitable in large diameter pipeline straight pipe deficiency before instrument
Rectification；
3, the utility model, can be further by the way that flowmeter to be inserted into shell in the 5th rectification pipeline section of rectifier structure
Improve the accuracy of flow measurement；
4, the utility model between rectifier structure and inner walls by being arranged fixed plate, it is ensured that rectifier uses
Stability.
Description of the drawings
Fig. 1 is one embodiment structural schematic diagram that the utility model multistage shrinks rectifier；
Fig. 2 is the enlarged view of region A in Fig. 1；
Fig. 3 is another example structure schematic diagram that the utility model multistage shrinks rectifier；
Fig. 4 is the B-B views of deflector in Fig. 1.
Specific implementation mode
In order to make those skilled in the art more fully understand the technical scheme in the embodiment of the utility model, and make this reality
Can be more obvious and easy to understand with the above objects, features, and advantages of new embodiment, below in conjunction with the accompanying drawings to the utility model reality
Technical solution in example is applied to be described in further detail.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " connection " should be done extensively
Reason and good sense solution, for example, it may be mechanical connection or electrical connection, can also be the connection inside two elements, can be directly connected,
It can also understand as the case may be indirectly connected through an intermediary, for the ordinary skill in the art
The concrete meaning of above-mentioned term.
Referring to Fig. 1, one embodiment circuit diagram of rectifier is shunk for the utility model multistage.The flowmeter can be with
Including shell 1, rectifier structure 4 is provided in the shell, in conjunction with shown in Fig. 2, the rectifier structure 4 includes multiple rectifying tubes
Section, for each rectification pipeline section, nozzle tapers into, and along fluid flow direction, the inclination angle of rectification pipeline section become larger after again
Become smaller.
In the present embodiment, the utility model rectifier, which can be directly installed on the large diameter pipeline there is no resistance piece, to be made
With being particularly suitable for appointing mounted on the connected straight pipe of the output end of resistance of ducting part or the output end of the resistance of ducting part
It anticipates on position.The output end of the resistance piece includes the output end of large diameter pipeline elbow.The rectification pipeline section can be five sections,
Along the fluid flow direction, the inclination angle of the first rectification pipeline section 41 is less than the inclination angle of the second rectification pipeline section 42, and described second
The inclination angle of 42 to the 5th rectification pipeline section 45 of rectification pipeline section is gradually reduced, and the inclination angle of the 5th rectification pipeline section 45 is 0, and
The first rectification pipeline section 41 connects with the inner walls, whole to be carried out to all fluids being delivered in the shell
Stream.The utility model is not the structure progress rectification shunk step by step using smooth nozzle when carrying out rectification to fluid, and
It is to carry out rectifications using sharp-featured multiple rectification pipeline sections, the nozzle of each rectification pipeline section itself tapers into and each whole
The nozzle gradient of flow tube section is become smaller again after becoming larger, and can be substantially reduced the difference of fluid flow fields in large diameter pipeline in this way
Property, it realizes abundant rectification, reduces crushing and energy consumption, flow measurement is carried out under the premise of rectification is sufficient, flow survey can be improved
The accuracy of amount.Since mixed flow vibration can occur in switching process, between fluid, therefore in order to ensure that rectifier uses steady
It is qualitative, it is provided with fixed plate between 1 inner wall of rectifier structure 4 and shell.
In order to further increase the accuracy of flow measurement, in conjunction with shown in Fig. 1 and Fig. 2, on the 5th rectification pipeline section 45
It is provided with first through hole, the second through-hole corresponding with the first through hole is provided on the shell 1, so that flowmeter is successively
It is inserted into the 5th rectification pipeline section 45 across second through-hole, first through hole.Since the fluid after rectified flows into greatly
After caliber pipe, still can be designed by large diameter pipeline itself is influenced and keeps fluid flow fields otherness very big, if will stream
Gauge is inserted into the other positions in shell, then there are still the relatively low problems of accuracy of measurement, therefore the utility model will be by that will flow
Gauge is inserted into the 5th rectification pipeline section, can further increase the accuracy of flow measurement.
As seen from the above-described embodiment, the utility model is by being arranged rectifier structure, and makes each rectification in rectifier structure
The nozzle of pipeline section itself tapers into, and the nozzle gradient of each rectification pipeline section is become smaller again after becoming larger, in this way can be significantly
The otherness for reducing fluid flow fields in large diameter pipeline realizes abundant rectification, crushing and energy consumption is reduced, in the sufficient premise of rectification
Lower carry out flow measurement, can improve the accuracy of flow measurement.
Referring to Fig. 3, another example structure schematic diagram of rectifier is shunk for the utility model multistage.Fig. 3 and Fig. 1 institutes
Show that difference lies in along fluid flow direction, be provided with and the shell multistage contraction rectifier at the rear of the rectifier structure 4
The deflector 2 and straightening flowing plate 3 of 1 cross-sections match of body.
In the present embodiment, in conjunction with shown in Fig. 4, the deflector 2 is two layers 21 and 22, and every layer of deflector is all by multiple mutual
Parallel flow deflector 20 forms, and the both ends of each flow deflector are separately connected the inner wall of the shell 1, and are led in upper layer and lower layer deflector
Flow is mutually perpendicular to intersect.The straightening flowing plate 3 is cellular, is supported by corrugated metal item and is formed to being connected, wave when connected
The protrusion of shape wave metal strip and the protrusion of adjacent wave shape metal strip support pair.The utility model is by using corrugated metal
Item is made cellular straightening flowing plate, rather than processes honeycomb shape on entire metallic plate, can reduce difficulty of processing, carry
High efficiency.Currently used flowmeter includes mainly S types pitot tube flowmeter and matrix form total cross-section flowmeter, S type skins
Trustship flowmeter is to calculate flow based on the point flow velocity in detecting head, but since it is just for carrying out a flow velocity measurement, and
It is not suitable for measuring the flow for the large diameter pipeline that Flow Field Distribution changes greatly.Therefore at present when measuring the flow of large diameter pipeline
Generally use matrix form total cross-section flowmeter, but this flowmeter needs to carry out calibration measurement to the section of large diameter pipeline,
It is difficult using calibration when matrix form total cross-section flowmeter since diameter mouth size, the shape of industry spot large diameter pipeline differ
It spends larger.Through applicants have found that, the sensitive nostril of traditional pitot tube flowmeter detecting head is inclined surface, compared to inclination
Detecting head is designed as arc-shaped tubulose, can improve flow measurement accuracy by face.For this purpose, the utility model is to target Shi Pituo
Flowmeter for pipe is designed, its detecting head is designed as arc-shaped tubulose, and small-sized wind tunnel calibration can be used in velocity head coefficient,
Thus the target formula pitot tube flowmeter that the utility model redesigns not only can be adapted for large diameter pipeline flow measurement, but also
Calibration difficulty and calibration cost can be reduced, flow measurement accuracy is improved.Wherein, the utility model is by target formula Pitot Tube Flow
The detecting head that meter is inserted into the shell is arc-shaped tubular structure, and perpendicular to the large diameter pipeline.The detecting head is
Two be oppositely arranged, the sensitive nostril face fluid flow direction of one of detecting head.
Fluid in input shell 1 is transported to straightening flowing plate 3 after 2 water conservancy diversion of deflector, by straightening flowing plate 3 that fluid is whole
Direct current is flowed into, fluid is transported to rectifier structure 4 after the processing of straightening flowing plate 3, further rectification is done to fluid, further to drop
The otherness of fluid flow fields in low large diameter pipeline.After fluid flows through deflector 2, straightening flowing plate 3 and rectifier structure 4 as a result, greatly
The flow field otherness of each region fluid is gradually reduced in caliber pipe, and flowmeter 5 can be with accurately measure large diameter pipeline
Interior flow.In addition, the sensitive nostril that traditional flowmeter is inserted into the detecting head in pipeline is inclined-plane, the utility model pass through by
Detecting head is set as arc-shaped tubular structure, can further increase the accuracy of large diameter pipeline flow measurement.In addition, through Shen
It asks someone the study found that flow field otherness when fluid is exported from large diameter pipeline elbow is very big, and fluid passes through the utility model
Flow field otherness is substantially reduced after rectification.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
Novel other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and include undocumented skill of the utility model
Common knowledge in art field or conventional techniques.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are indicated by the following claims.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
Claims (6)
1. a kind of multistage contraction rectifier, which is characterized in that including shell, rectifier structure is provided in the shell, it is described whole
Flow structure includes multiple rectification pipeline sections, and for each rectification pipeline section, nozzle tapers into, and along fluid flow direction, rectification
The inclination angle of pipeline section becomes smaller again after becoming larger.
2. multistage contraction rectifier according to claim 1, which is characterized in that the shell is arranged in resistance of ducting part
On the connected straight pipe any position of the output end of output end or the resistance piece.
3. multistage rectifier is shunk according to claim 2, which is characterized in that the output end of the resistance of ducting part includes
The output end of large diameter pipeline elbow.
4. multistage contraction rectifier according to claim 1, which is characterized in that the rectification pipeline section is five sections, wherein edge
The fluid flow direction, the inclination angle of the first rectification pipeline section are less than the inclination angle of the second rectification pipeline section, second rectifying tube
The inclination angle of five rectification pipeline sections of Duan Zhi is gradually reduced, and the inclination angle of the 5th rectification pipeline section is 0, the first rectification pipeline section
Connect with the inner walls.
5. multistage contraction rectifier according to claim 1 or 4, which is characterized in that the rectifier structure and the shell
Fixed plate is provided between inner wall.
6. multistage rectifier is shunk according to claim 4, which is characterized in that the is provided on the 5th rectification pipeline section
One through-hole is provided with the second through-hole corresponding with the first through hole on the shell so that flowmeter sequentially pass through it is described
Second through-hole, first through hole are inserted into the 5th rectification pipeline section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820104089.XU CN207675249U (en) | 2018-01-22 | 2018-01-22 | Multistage shrinks rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820104089.XU CN207675249U (en) | 2018-01-22 | 2018-01-22 | Multistage shrinks rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207675249U true CN207675249U (en) | 2018-07-31 |
Family
ID=62973659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820104089.XU Active CN207675249U (en) | 2018-01-22 | 2018-01-22 | Multistage shrinks rectifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207675249U (en) |
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2018
- 2018-01-22 CN CN201820104089.XU patent/CN207675249U/en active Active
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