CN207675234U - Flowmeter suitable for large diameter pipeline flow measurement - Google Patents
Flowmeter suitable for large diameter pipeline flow measurement Download PDFInfo
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- CN207675234U CN207675234U CN201820102683.5U CN201820102683U CN207675234U CN 207675234 U CN207675234 U CN 207675234U CN 201820102683 U CN201820102683 U CN 201820102683U CN 207675234 U CN207675234 U CN 207675234U
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Abstract
The utility model provides a kind of flowmeter suitable for large diameter pipeline flow measurement, including shell, it is disposed with along shell described in fluid flow direction and the matched deflector of the housing section and straightening flowing plate, the rectifier structure and flow sensor that nozzle is shunk step by step, it is fluid flow direction described in arc-shaped tubular structure and sensitive nostril face that the flow sensor, which is inserted into the detecting head in the shell, the rectifier structure includes multiple rectification pipeline sections, for each rectification pipeline section, its nozzle tapers into, and along the fluid flow direction, the inclination angle of rectification pipeline section becomes smaller again after becoming larger.The utility model is by being arranged deflector, straightening flowing plate and rectifier structure, the flow field difference of flow in large diameter pipeline can be reduced, it to improve flow measurement accuracy, and is designed by the shape of the detecting head of flow sensor, accuracy of measurement can be further increased.
Description
Technical field
The utility model belongs to field of flow measurement, and in particular to a kind of flow suitable for large diameter pipeline flow measurement
Meter.
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.
For example, in industrial pollution industry, the generally use large diameter pipeline when discharging flue gas is inserted into large diameter pipeline
Flowmeter counts smoke discharge amount, and traditional flowmeter measurement error is larger, and one side measured value is more than actual value, meeting
Increase pollutant discharge of enterprise expense, another aspect measured value is less than actual value, can enforce the law to environmental protection administration and bring certain difficulty, thus may be used
See, the flow of large diameter pipeline, which accurately measures to have in terms of law enforcement for environmental protection, to have very great significance.
Utility model content
The utility model provides a kind of flowmeter suitable for large diameter pipeline flow measurement, to solve current flux measurement
Measure the relatively low problem of accuracy.
According to the utility model embodiment in a first aspect, providing a kind of flow suitable for large diameter pipeline flow measurement
Meter, including shell are disposed with and the matched deflector of the housing section and whole along shell described in fluid flow direction
Direct current plate, the rectifier structure and flow sensor that nozzle is shunk step by step, the flow sensor are inserted into the spy in the shell
Gauge head is fluid flow direction described in arc-shaped tubular structure and its sensitive nostril face, and the rectifier structure includes multiple rectifications
Pipeline section, for each rectification pipeline section, nozzle tapers into, and along the fluid flow direction, and the inclination angle of rectification pipeline section becomes
Become smaller again after big.
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 deflector is two layers, and every layer of deflector is all mutually parallel by multiple
Flow deflector forms, and the both ends of each flow deflector are separately connected the inner wall of the shell, and flow deflector phase in upper layer and lower layer deflector
Mutual square crossing.
In another optional realization method, the straightening flowing plate is cellular, is supported by corrugated metal item to being connected
It forms.
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, 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, the detecting head sequentially passes through second through-hole, first through hole
It is inserted into the rectifier structure.
In another optional realization method, the detecting head is inserted into the 5th rectifying tube perpendicular to large diameter pipeline
In section.
In another optional realization method, the flow sensor is target formula pitot tube flow sensor.
In another optional realization method, the detecting head is two be oppositely arranged, one of detecting head
Fluid flow direction described in sensitive nostril face.
In another optional realization method, fixed plate is provided between the rectifier structure and the inner walls.
The utility model has the beneficial effects that：
1, the utility model can reduce large diameter pipeline flow field by the way that deflector, straightening flowing plate and rectifier structure is arranged
Difference to improve flow measurement accuracy, and is designed, Ke Yijin by the shape of the detecting head of flow sensor
One step improves accuracy of measurement；
2, fluid flows through resistance when the utility model flowmeter is particularly suitable in large diameter pipeline straight pipe deficiency before instrument
Flow measurement after power part；
3, the utility model is cellular by the way that straightening flowing plate to be designed as, and is supported by corrugated metal item and is formed to being connected, can
To reduce difficulty of processing, production efficiency is improved；
4, the utility model is not to be carried out using the structure that smooth nozzle is shunk step by step when carrying out rectification to fluid
Rectification, but rectification is carried out using sharp-featured multiple rectification pipeline sections, the nozzle of each rectification pipeline section itself tapers into simultaneously
And the inclination angle of each rectification pipeline section is become smaller again after becoming larger, and can be substantially reduced fluid flow fields in large diameter pipeline in this way
Otherness realizes abundant rectification, and flow measurement is carried out under the premise of rectification is sufficient, can improve the accuracy of flow measurement；
5, the utility model can be carried further by the way that flow sensor to be inserted into the 5th rectification pipeline section of rectifier structure
The accuracy that high flow capacity measures；
6, the utility model designs target formula pitot tube flow sensor, its detecting head is designed as arc-shaped pipe
Small-sized wind tunnel calibration can be used in shape, velocity head coefficient, and thus flow sensor not only can be adapted for greatly in the utility model
Caliber pipe flow measurement, and calibration difficulty and calibration cost are reduced, improve flow measurement accuracy；
7, the utility model between rectifier structure and inner walls by being arranged fixed plate, it is ensured that flowmeter uses
Stability.
Description of the drawings
Fig. 1 is one embodiment structural representation for the flowmeter that the utility model is suitable for large diameter pipeline flow measurement
Figure；
Fig. 2 is the A-A views of deflector in Fig. 1；
Fig. 3 is the enlarged view of region B 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, it is suitable for one embodiment circuit of the flowmeter of large diameter pipeline flow measurement for the utility model
Schematic diagram.The flowmeter may include shell 1, is disposed with along shell described in fluid flow direction 1 and is cut with the shell 1
The matched deflector 2 in face and straightening flowing plate 3, the rectifier structure 4 and flow sensor 5 that nozzle multistage is shunk, the flow pass
It is fluid flowing side described in arc-shaped tubular structure and its sensitive nostril face that sensor 5, which is inserted into the detecting head 51 in the shell 1,
To the rectifier structure 4 includes multiple rectification pipeline sections, and for each rectification pipeline section, nozzle tapers into, and along the fluid
Flow direction, the inclination angle of rectification pipeline section become smaller again after becoming larger.
In the present embodiment, in conjunction with shown in Fig. 2, 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.In conjunction with shown in Fig. 3, the rectification pipeline section can be five sections, along the fluid flow direction, the first rectification pipeline section
41 inclination angle is less than the inclination angle of the second rectification pipeline section 42, the inclination of 42 to the 5th rectification pipeline section 45 of the second rectification pipeline section
Angle is gradually reduced, and the inclination angle of the 5th rectification pipeline section 45 is 0, and the first rectification pipeline section 41 and the inner walls
Connect, to carry out rectification to all fluids being delivered in the shell.The utility model to fluid carry out rectification when, and
It does not use instead of the structure that smooth nozzle is shunk step by step to carry out rectification, is carried out using sharp-featured multiple rectification pipeline sections whole
Stream, the nozzle of each rectification pipeline section itself tapers into and the inclination angle of each rectification pipeline section is become smaller again after becoming larger, this
Sample can be substantially reduced the otherness of fluid flow fields in large diameter pipeline, realize abundant rectification, under the premise of rectification is sufficient into
Row flow measurement can improve the accuracy of flow measurement.Since mixed flow vibration can occur in switching process, between fluid,
Therefore in order to ensure stability that flowmeter uses, fixed plate is provided 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, it is provided on the 5th rectification pipeline section 45
First through hole is provided with the second through-hole corresponding with the first through hole on the shell 1, and the detecting head 51 sequentially passes through
Second through-hole, first through hole are inserted into the 5th rectification pipeline section 45 in the rectifier structure 4.Due to the stream after rectified
After body flows into large diameter pipeline, still can be designed by large diameter pipeline itself is influenced and keeps fluid flow fields otherness very big,
If flow sensor is inserted into the other positions in shell, there are still the relatively low problem of accuracy of measurement, therefore this practicality
It is novel by by flow sensor be inserted into shell in rectifier structure in, the accuracy of flow measurement can be further increased.
Currently used flow sensor includes mainly S types pitot tube flow sensor and matrix form total cross-section flow sensing
Device, S type pitot tube flow sensors are to calculate flow based on the point flow velocity in detecting head, but since it is just for carrying out
Flow velocity measures, and is not particularly suited for measuring the flow for the large diameter pipeline that Flow Field Distribution changes greatly.Therefore heavy caliber is being measured at present
Generally use matrix form total cross-section flow sensor when the flow of pipeline, but this flow sensor is needed to large diameter pipeline
Section carry out calibration measurement, since diameter mouth size, the shape of industry spot large diameter pipeline differ, using matrix form it is complete
It is larger that difficulty is demarcated when the flow sensor of section.Through applicants have found that, traditional pitot tube flow sensor detecting head
Sensitive nostril is inclined surface, and compared to inclined surface, detecting head is designed as arc-shaped tubulose by the utility model, can improve flow
Accuracy of measurement.For this purpose, the utility model designs target formula pitot tube flow sensor, its detecting head is designed as justifying
Small-sized wind tunnel calibration can be used in arced tube, velocity head coefficient, and thus the utility model flow sensor can be not only applicable in
In large diameter pipeline flow measurement, and calibration difficulty and calibration cost can be reduced, improve flow measurement accuracy.Wherein,
The detecting head that target formula pitot tube flow sensor is inserted into the 5th rectification pipeline section of rectifier structure in the utility model is arc-shaped
Tubular structure, and perpendicular to the large diameter pipeline.The detecting head is two be oppositely arranged, one of detecting head it is quick
Feel fluid flow direction described in the face of nostril.
The utility model flowmeter can be directly installed on the large diameter pipeline there is no resistance piece and use.Input shell
Fluid in 1 is transported to straightening flowing plate 3 after 2 water conservancy diversion of deflector, and disorderly fluid is rectified into direct current by straightening flowing plate 3,
Fluid is transported to the rectifier structure 4 at rear after the processing of straightening flowing plate 3, further rectification is done to fluid, to further decrease
The otherness of fluid flow fields in large diameter pipeline.After fluid flows through deflector 2, straightening flowing plate 3 and rectifier structure 4 as a result, big mouth
The flow field otherness of each region fluid is gradually reduced in diameter pipeline, and flow sensor 5 can be with accurately measure large-diameter pipe
Flow in road.In addition, the sensitive nostril that traditional flow sensor is inserted into the detecting head in pipeline is inclined-plane, the utility model
By setting detecting head to arc-shaped tubular structure, the accuracy of large diameter pipeline flow measurement can be further increased.Separately
Outside, through applicants have found that, flow field otherness when fluid is exported from the various elbows of large diameter pipeline is very big, and fluid passes through
Flow field otherness is substantially reduced after the utility model rectification.The utility model flowmeter is particularly suitable for being mounted on pipeline as a result,
On the connected straight pipe any position of the output end of the output end of resistance piece or the resistance of ducting part.The resistance piece it is defeated
Outlet includes the output end of the various elbows of large diameter pipeline.As seen from the above-described embodiment, the utility model by be arranged deflector,
Straightening flowing plate and rectifier structure can reduce the flow field difference of flow in large diameter pipeline, to improve flow measurement accuracy,
And it is designed by the shape of the detecting head of flow sensor, accuracy of measurement can be further increased.
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 (10)
1. a kind of flowmeter suitable for large diameter pipeline flow measurement, which is characterized in that including shell, along fluid flow direction
It is disposed in the shell with the matched deflector of the housing section and straightening flowing plate, the rectifying junction that nozzle is shunk step by step
Structure and flow sensor, it is arc-shaped tubular structure and its sensitivity that the flow sensor, which is inserted into the detecting head in the shell,
Fluid flow direction described in the face of nostril, the rectifier structure includes multiple rectification pipeline sections, for each rectification pipeline section, nozzle
It tapers into, and along the fluid flow direction, the inclination angle of rectification pipeline section becomes smaller again after becoming larger.
2. flowmeter according to claim 1, which is characterized in that the shell be arranged resistance of ducting part output end or
On the connected straight pipe any position of the output end of resistance of ducting part described in person.
3. flowmeter according to claim 1, which is characterized in that the deflector is two layers, and every layer of deflector is all by more
A flow deflector composition that is mutually parallel, the both ends of each flow deflector are separately connected the inner wall of the shell, and upper layer and lower layer deflector
Middle flow deflector is mutually perpendicular to intersect.
4. flowmeter according to claim 1, which is characterized in that the straightening flowing plate is cellular, by corrugated metal
Item is supported to be formed to being connected.
5. flowmeter according to claim 1, which is characterized in that the rectification pipeline section is five sections, wherein along 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, the second rectification pipeline section to the 5th
The inclination angle of rectification pipeline section is gradually reduced, and the inclination angle of the 5th rectification pipeline section is 0, the first rectification pipeline section and the shell
Internal wall connects.
6. flowmeter according to claim 5, which is characterized in that it is provided with first through hole on the 5th rectification pipeline section,
The second through-hole corresponding with the first through hole is provided on the shell, it is logical that the detecting head sequentially passes through described second
Hole, first through hole are inserted into the rectifier structure.
7. flowmeter according to claim 5, which is characterized in that the detecting head is perpendicular to described in large diameter pipeline insertion
In 5th rectification pipeline section.
8. flowmeter according to claim 7, which is characterized in that the flow sensor senses for target formula Pitot Tube Flow
Device.
9. flowmeter according to claim 8, which is characterized in that the detecting head is two be oppositely arranged, wherein one
Fluid flow direction described in the sensitive nostril face of a detecting head.
10. flowmeter according to claim 1, which is characterized in that set between the rectifier structure and the inner walls
It is equipped with fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102683.5U CN207675234U (en) | 2018-01-22 | 2018-01-22 | Flowmeter suitable for large diameter pipeline flow measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102683.5U CN207675234U (en) | 2018-01-22 | 2018-01-22 | Flowmeter suitable for large diameter pipeline flow measurement |
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| Publication Number | Publication Date |
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| CN207675234U true CN207675234U (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820102683.5U Active CN207675234U (en) | 2018-01-22 | 2018-01-22 | Flowmeter suitable for large diameter pipeline flow measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318090A (en) * | 2018-01-22 | 2018-07-24 | 重庆市环境科学研究院 | Flowmeter suitable for large diameter pipeline flow measurement |
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2018
- 2018-01-22 CN CN201820102683.5U patent/CN207675234U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318090A (en) * | 2018-01-22 | 2018-07-24 | 重庆市环境科学研究院 | Flowmeter suitable for large diameter pipeline flow measurement |
| CN108318090B (en) * | 2018-01-22 | 2023-11-07 | 重庆市生态环境科学研究院 | Flowmeter suitable for large-caliber pipeline flow measurement |
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