CN206656770U - The ultrasonic flowmeter of noise reduction rectifier structure and its composition - Google Patents
The ultrasonic flowmeter of noise reduction rectifier structure and its composition Download PDFInfo
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- CN206656770U CN206656770U CN201720473846.6U CN201720473846U CN206656770U CN 206656770 U CN206656770 U CN 206656770U CN 201720473846 U CN201720473846 U CN 201720473846U CN 206656770 U CN206656770 U CN 206656770U
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- ultrasonic flowmeter
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- loose structure
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Abstract
The utility model discloses a kind of noise reduction rectifier structure, including tubular construction, one-level loose structure, two level loose structure are provided with inside the tubular construction, the one-level loose structure is the loose structure that foam metal is formed, and the two level loose structure is the loose structure being made up of Aluminum Honeycomb Cores.The utility model can substitute the front and rear straight length set of existing ultrasonic flowmeter completely, greatly reduce the installation volume of ultrasonic flowmeter, the problem of eliminating signal drift existing for ultrasonic flowmeter in the prior art, effectively by the control of gas flow measurement relative error within 1%.The utility model additionally provides a kind of ultrasonic flowmeter being made up of above-mentioned noise reduction rectifier structure.
Description
Technical field
Gas dosing equipment technical field is the utility model is related to, in particular to noise reduction rectifier structure and its composition
Ultrasonic flowmeter.
Background technology
Ultrasonic flowmeter is the instrument that fluid flow in pipe is measured for principle with " speed difference method ".It employs elder generation
Multi-pulse techniques, signal digital processing technology and the error correcting technique entered, makes flow instrument be suitable for the environment of industry spot,
Metering is more convenient, economical, accurate.Product reaches domestic and international advanced level, can be widely applied to oil, chemical industry, metallurgy, electric power,
The fields such as plumbing.Ultrasonic flowmeter is the main trend of fluid metering development.
Ultrasonic flowmeter is a kind of contactless instrument, and the rate-of flow that it can both measure Large Diameter Pipeline can be used for
The measurement of medium for being not easy to contact and observing.Ultrasonic flowmeter needs gathered data signal when in use, so signal is steady
The fixed precision measured it just has a significant impact, so he has a shortcoming：Gas flow when can pass through multiple elbows,
When reducing, filter etc. easily change the fluid of airflow direction, rotation will be produced, irregular air-flow is moved and will influence to believe
Number collection, cause measurement accuracy poor.Therefore have at least 10D and 5D straight length before and after requiring ultrasonic flowmeter respectively, work as process
During a certain proportion of front and rear straight length, air-flow can flow according to same pipeline section same direction, be progressively corrected into regular flow, reach meter
Measure accurate purpose.However, ultrasonic flowmeter is front and rear no doubt to contribute to signal acquisition using sufficiently long straight length, but have
When in order to reduce the installation volume of ultrasonic flowmeter, often through cowling panel is added on straight length, so as to certain
Degree shortens straight length before and after ultrasonic flowmeter.Reason is not reached using the ultrasonic flowmeter of common cowling panel in the prior art
The rectification effect thought, with great difficulty there is not timing error in rectification effect, it is difficult to get stable signal.
Utility model content
Main purpose of the present utility model is to provide noise reduction rectifier structure and its ultrasonic flowmeter of composition, to solve
The problem of ultrasonic flowmeter is difficult to obtain stabilization signal in the prior art.
To achieve these goals, the utility model provides a kind of noise reduction rectifier structure, including tubular construction, the pipe knot
One-level loose structure, two level loose structure are provided with inside structure, the one-level loose structure is the loose structure that foam metal is formed,
The two level loose structure is the loose structure being made up of Aluminum Honeycomb Cores.Drop can be realized above by one-level noise reduction rectifier structure
Advance rectification is carried out to the gas of entrance while making an uproar, two level rectifier structure can be carried out again to the gas after advance rectification
Rectification, first noise reduction rectification can be realized under the conditions of above-mentioned specific structure, after rectification again effect, and can substitute completely
The front and rear straight length set of existing ultrasonic flowmeter, greatly reduces the installation volume of ultrasonic flowmeter, eliminates existing
Timing error existing for ultrasonic flowmeter in technology, so as to solve the problems, such as its signal drift, effectively measures gas stream
Relative error control is measured within 1%.Foam-like hole aperture is small, can realize aperture noise reduction, and certain rectification is played to air-flow
Effect, but gas is inconsistent by the flow direction after aperture, rectification effect does not reach preferable effect also；Honeycomb-like pores
It is relatively regular, it is good to rectification effect, by both above-mentioned combinations, preferable noise reduction rectification effect, the foam-like on aperture can be reached
The aperture in hole is less than the aperture of honeycomb-like pores naturally, it is contemplated that and the utility model is the smaller the better on installing space, and above-mentioned one
Level noise reduction rectifier structure and two level rectifier structure install compact in set location, both can be close to set.
Further, the aperture of one-level loose structure is 1-5mm, wall thickness 10-15mm.The one-level loose structure is bubble
The loose structure that foam metal is formed.The foam metal porosity can reach more than 90%, be have some strength and rigidity more
Mesoporous metal.Metal material containing foam-like stomata is compared with general sintered porous metal, the higher hole of the porosity of foam metal
Gap diameter can reach grade.Consider antirust, we have selected foam copper, foamed aluminium, nickel foam come carry out test foamed aluminium and
Its alloy is light, has sound-absorbing, heat-insulated, vibration damping, absorbs the characteristic such as impact energy and electromagnetic wave.
Further, the one-level loose structure can be a kind of foam metal structure in foam copper, foamed aluminium, nickel foam
Into loose structure.The two level loose structure is Aluminum Honeycomb Cores.Aluminium honeycomb core is bonded by laminated aluminium foil, is laminated, Ran Houla
Trail into the regular hexagon honeycomb core of rule.Aluminium honeycomb core has sharp, clearly hole wall, without burr, is adapted to high-quality
The bonding and other purposes of the core facestock of amount.Cellular board sandwich layer is hexagon aluminium honeycomb, the dense cellular mutually pind down
It is dispersible to undertake the pressure from panel direction just like many small I-beams, make plate uniform force, ensure that panel in larger face
Remain to keep very high flatness during product.In addition, hollow honeycomb can also weaken the thermal expansivity of plate body significantly.Aluminium honeycomb core material
Supply of material form is divided into aluminium honeycomb and folds the aluminium honeycomb core block after block, aluminium honeycomb core bar and stretching.
Further, the aperture of the two level loose structure is 4-10mm, wall thickness 15-30mm.
Further, the inwall of the tubular construction be provided with one week for two level rectifier structure install ledge structure, described one
Two level rectifier structure is pressed at ledge structure by level noise reduction rectifier structure by compressing structure.
Further, the compressing structure includes the bolt arrangement of pressing plate and fixation clip.
Further, the one-level loose structure and the adjacent setting of two level loose structure.
To achieve these goals, the utility model additionally provides a kind of ultrasonic wave being made up of above-mentioned noise reduction rectifier structure
Flowmeter, including ultrasonic flowmeter main body and the noise reduction rectifier structure that is arranged at ultrasonic flowmeter main body air inlet,
The noise reduction rectifier structure uses above-mentioned noise reduction rectifier structure.
Noise reduction rectifier structure in the utility model can both be built in supersonic flow when being installed on ultrasonic flowmeter
, can also be external with ultrasonic flowmeter inside gauge, two kinds of structures can be realized can be real by one-level noise reduction rectifier structure
Advance rectification is carried out to the gas of entrance while existing noise reduction, the two level rectifier structure that one-level noise reduction rectifier structure is set can be right
Rectification again is carried out to the gas after advance rectification at once, first noise reduction rectification can be realized under the conditions of above-mentioned specific structure,
The effect of rectification again afterwards, and the front and rear straight length set of existing ultrasonic flowmeter can be substituted completely, greatly reduce
The installation volume of ultrasonic flowmeter, the problem of eliminating signal drift existing for ultrasonic flowmeter in the prior art, effectively
Ground controls gas flow measurement relative error within 1%.
Further, when noise reduction rectifier structure and ultrasonic flowmeter are external, the tubular construction is to be external in supersonic flow
The adapter of gauge main body inlet port.
Further, when noise reduction rectifier structure is built in inside ultrasonic flowmeter, the tubular construction is ultrasonic flow
Count valve body.
It can be seen that the utility model can substitute the front and rear straight length set of existing ultrasonic flowmeter completely, it is substantially reduced
The installation volume of ultrasonic flowmeter, the problem of eliminating signal drift existing for ultrasonic flowmeter in the prior art, have
Effect ground is by the control of gas flow measurement relative error within 1%.The utility model is suitable for gas flow measurement technical field,
Be particularly suitable for use in the application on ultrasonic flowmeter.
The utility model is described further with reference to the accompanying drawings and detailed description.What the utility model added
Aspect and advantage will be set forth in part in the description, and partly will become apparent from the description below, or pass through this practicality
New practice is recognized.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for aiding in understanding of the present utility model, provided in accompanying drawing
Content and its relevant explanation in the utility model can be used for explaining the utility model, but do not form to it is of the present utility model not
Work as restriction.In the accompanying drawings：
The structural representation of the utility model ultrasonic flowmeter when Fig. 1 is built in noise reduction rectifier structure.
The structural representation of the utility model noise reduction rectifier structure when Fig. 2 is built in noise reduction rectifier structure.
Fig. 3 is the structural representation of the utility model ultrasonic flowmeter when noise reduction rectifier structure is external.
Fig. 4 is the structural representation of the utility model noise reduction rectifier structure when noise reduction rectifier structure is external.
Embodiment
Clear, complete explanation is carried out to the utility model below in conjunction with the accompanying drawings.Those of ordinary skill in the art based on
The utility model can be realized in the case of these explanations.It is before being illustrated with reference to accompanying drawing to the utility model, it is necessary to special
It is not pointed out that：
(1) technical scheme in the utility model provided in each several part including the description below and technology are special
Sign, in the case where not conflicting, these technical schemes and technical characteristic can be mutually combined.
(2) embodiment of the present utility model being related in the description below is generally only the implementation of the utility model part
Example, rather than whole embodiments.Therefore, do not had based on the embodiment in the utility model, those of ordinary skill in the art
The every other embodiment obtained on the premise of making creative work, it should all belong to the scope of the utility model protection.
(3) on the explanation to term in the utility model.Specification and claims of the present utility model and relevant
Part in term " one-level ", " two level " etc. be easily to cause the object confused for distinguishing, without specific for describing
Order or precedence.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive
Include.Term refers to " with intensity " with the ability that destruction is resisted in the presence of external force, the one-level in the utility model
Loose structure, two level loose structure can resist gas by the pressure formed in the case of air-flow is constantly by ground, keep it
Original form is constant.Term " relative error " is the error between the flow and standard calibration device tested out.In national standard
The required precision of ultrasonic flowmeter controls above-mentioned gas flow measurement relative error at 1.0 grades.Wherein term " aperture " is
The average diameter of the general hole referred to.
Noise reduction rectifier structure, including tubular construction, the tubular construction inside are provided with one-level loose structure 2, two level loose structure
3, the one-level loose structure 2 is the loose structure that foam metal is formed, and the two level loose structure 3 is to be made up of Aluminum Honeycomb Cores
Loose structure.
The aperture of one-level loose structure 2 is 1-5mm, wall thickness 10-15mm.
The one-level loose structure 2 is the loose structure that foam metal is formed.
The one-level loose structure 2 can be a kind of the porous of foam metal composition in foam copper, foamed aluminium, nickel foam
Structure.
The two level loose structure 3 is Aluminum Honeycomb Cores.
The aperture of the two level loose structure 3 is 4-10mm, wall thickness 15-30mm.
The inwall of the tubular construction is provided with one week ledge structure installed for two level loose structure 3, the porous knot of one-level
Two level loose structure 3 is pressed at ledge structure by structure 2 by compressing structure.
The compressing structure includes the bolt arrangement of pressing plate 4 and fixation clip 4.
The one-level loose structure 2 and the 3 adjacent setting of two level loose structure.
Ultrasonic flowmeter, including ultrasonic flowmeter main body and be arranged at ultrasonic flowmeter main body air inlet
Noise reduction rectifier structure, the noise reduction rectifier structure use above-mentioned noise reduction rectifier structure.
The tubular construction is the adapter A for being external in ultrasonic flowmeter main body air inlet.
The tubular construction is ultrasonic flowmeter valve B.
The structural representation of the utility model ultrasonic flowmeter when Fig. 1 is built in noise reduction rectifier structure.As shown in figure 1,
The utility model ultrasonic flowmeter includes ultrasonic flowmeter main body and and ultrasonic flow when built in noise reduction rectifier structure
The connected adapter A of main body is counted, the ultrasonic flowmeter main body includes ultrasonic flowmeter valve B, is arranged at ultrasonic flow
Count the flowmeter body 5 on valve B and the transducer 7 being arranged on ultrasonic flowmeter valve B.
The structural representation of the utility model noise reduction rectifier structure when Fig. 2 is built in noise reduction rectifier structure.As shown in Fig. 2
The adapter A includes adapter main body 1 and is arranged at the flange at the both ends of adapter main body 1, the inlet port of the adapter main body 11
Inwall is provided with adapter ledge structure 12, and pressing plate 4, one-level loose structure 2, two level are sequentially provided with from the inlet port of adapter main body 1
Loose structure 3, wherein one-level loose structure 2 are the plate-like porous structure that foam metal is formed, and two level loose structure 3 is honeycomb aluminum
The plate-like porous structure that core is formed, the pressing plate 4 are connected by bolt arrangement with inlet port flange 11, are tightening the bolt
Above-mentioned one-level loose structure 2 and two level loose structure 3 are pressed on adapter ledge structure 12 by pressing plate 4 during structure.The adapter
Main body 1 is short tube.
With reference to Fig. 1 and Fig. 2, the ultrasonic flowmeter valve B includes tubulose valve body 6 and is arranged at tubulose valve body
The flange at 6 both ends, the outlet port flange 13 of the adapter main body 1 pass through bolt 130 and the inlet port flange of tubulose valve body 6
61 are connected, and are tightened afterwards by nut 610, and it is overall thus to form ultrasonic flowmeter.
Fig. 3 is the structural representation of the utility model ultrasonic flowmeter when noise reduction rectifier structure is external.As shown in figure 3,
The utility model ultrasonic flowmeter includes ultrasonic flowmeter valve B, is arranged at supersonic flow when noise reduction rectifier structure is external
Flowmeter body 5 on gauge valve B and the transducer 7 being arranged on ultrasonic flowmeter valve B.
As shown in figure 4, the ultrasonic flowmeter valve B includes tubulose valve body 6 and is arranged at 6 liang of tubulose valve body
The flange at end, the inwall of the entrance point of the tubulose valve body 6 are provided with valve body ledge structure 62, and the tubulose valve body 6 enters
Mouth end is sequentially provided with pressing plate 4, one-level loose structure 2, two level loose structure 3, and wherein one-level loose structure 2 is that foam metal is formed
Plate-like porous structure, two level loose structure 3 is the plate-like porous structure that Aluminum Honeycomb Cores are formed, and the pressing plate 4 passes through bolt knot
Structure is connected with valve body inlet port flange 61, and when tightening the bolt arrangement, pressing plate 4 is by above-mentioned one-level loose structure 2 and two level
Loose structure 3 is pressed on valve body ledge structure 62.Foam metal enables to the porosity ＞ 90% of one-level loose structure 2.
The above-mentioned ultrasonic flowmeter by noise reduction rectifier structure when external is in volume compared to by noise reduction rectifier structure
Ultrasonic flowmeter when putting is bigger, and both do not have significant difference in using effect.
Below by way of the rating test of ultrasonic flowmeter of different structure, the utility model is described in further detail.It is above-mentioned
Experiment includes embodiment 1-3, comparative example 1-24.
The rating test of ultrasonic flowmeter is demarcated by the way that ultrasonic flowmeter is connected with negative pressure caliberating device,
Scaling method is scaling method of the prior art, will not be described here, -250pa negative pressure is used uniformly in above-mentioned experiment
Demarcated.
It is 10mm, aperture 2mm that embodiment 1-3 noise reduction rectifier structure first passes through wall thickness according to gas in above-mentioned experiment
Foam copper perforated plate-like structure, after by wall thickness be 15mm, aperture is the priority time of 6mm Aluminum Honeycomb Cores perforated plate-like structure
Sequence is installed；Comparative example 1-3 and embodiment 1-3 is distinguished as before and after comparative example 1-3 ultrasonic flowmeter main body not in structure
Noise reduction rectifier structure is set；Comparative example 4-6 and the noise reduction rectifier structures that is distinguished as comparative example 4-6 of the embodiment 1-3 in structure
10D straight length is set using ultrasonic flowmeter body front part, and rear portion sets 5D straight length；Comparative example 7-9 and embodiment
The noise reduction rectifier structures that is distinguished as comparative example 7-9 of the 1-3 in structure is only 5mm, aperture 10mm by wall thickness according to gas
Aluminum Honeycomb Cores perforated plate-like structure installation；Comparative example 10-12 and embodiment 1-3 is distinguished as comparative example 10-12 in structure
Noise reduction rectifier structure according to gas be only 15mm by wall thickness, the Aluminum Honeycomb Cores perforated plate-like structure that aperture is 10mm is installed；
The noise reduction rectifier structures that is distinguished as comparative example 13-15 of the comparative example 13-15 and embodiment 1-3 in structure only passes through according to gas
Wall thickness is 15mm, and the Aluminum Honeycomb Cores perforated plate-like structure that aperture is 6mm is installed；Comparative example 16-18 noise reduction rectifier structure according to
Gas is only 10mm by wall thickness, and the foam copper perforated plate-like structure that aperture is 2mm is installed；Comparative example 18-21 noise reduction rectification
Structure is only 10mm by wall thickness according to gas, and the foam copper perforated plate-like structure that aperture is 1mm is installed；Comparative example 22-24's
It is 15mm that noise reduction rectifier structure first passes through wall thickness according to gas, and aperture is 6mm Aluminum Honeycomb Cores perforated plate-like structure, after by wall
Thickness is 10mm, and the foam copper perforated plate-like structure that aperture is 2mm is installed.Comparative example 25-27 and areas of the embodiment 1-3 in structure
Not Wei comparative example 25-27 one-level loose structure aperture ＜ 1mm, wall thickness ＜ 10mm；The aperture ＜ 4mm of two level loose structure,
Wall thickness ＜ 15mm.Comparative example 28-30 and the one-level loose structures that is distinguished as comparative example 25-27 of the embodiment 1-3 in structure
Aperture ＞ 5mm, wall thickness ＞ 15mm；The aperture ＞ 10mm of two level loose structure, wall thickness ＞ 30mm.
Specific experiment see the table below 1.
Table 1
As seen from the above table, only relative errors of the embodiment 1-3 under each test pressure is controlled within 1.0% completely,
The problem of thereby eliminating signal drift existing for ultrasonic flowmeter in the prior art, it is effectively that gas flow measurement is relative
Control errors are within 1%, while before the noise reduction rectifier structure in embodiment 1-3 can substitute existing ultrasonic flowmeter completely
The straight length set afterwards, the installation volume of ultrasonic flowmeter is greatly reduced, its gas rectification effect is substantially better than existing skill
The front and rear structure that straight length is set of intraoperative ultrasound low.By embodiment 1-3 and comparative example 7-24, this is only taken
The mounting structure of noise reduction rectifier structure and erection sequence can reach above-mentioned preferable rectification effect in utility model.It is above-mentioned
Foam copper in experiment could alternatively be foamed aluminium, nickel foam, not have obvious area on gas rectification effect with embodiment 1-3
Not.
Continue noise reduction experiment to above-mentioned utility model embodiment 1-3, Mike is first used before and after ultrasonic flowmeter
Wind testing background noise when gas in pipelines is static, then by testing attenuation of the frequency noise in 200KHz, noise
Attenuation can reach 15 decibels.Above-mentioned the utility model embodiment 1-3 test proves that, can effectively reduce gas circulation
During caused noise, can first pass through while the noise reduction rectifier structure of foam metal perforated plate-like structure realizes noise reduction pair
The gas of entrance carries out advance rectification, the Aluminum Honeycomb Cores perforated plate-like structure set afterwards can at once to advance rectifying noise-reduction it
Gas afterwards carries out rectification again, thus reaches excellent noise reduction rectification effect.
In addition, the foam copper perforated plate-like structure in the utility model embodiment as one-level loose structure
Aperture be also an option that 1mm, 1.5mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm,
2.9mm, 3.0mm, 3.5mm, 4mm, 4.5mm, 5mm equal-specification, wall thickness can select 10.5mm, 11mm, 11.5mm, 12mm,
12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm equal-specification；Aluminum Honeycomb Cores perforated plate-like as two level loose structure
The aperture of structure can select 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.1mm, 6.2mm, 6.3mm, 6.4mm, 6.5mm,
6.6mm、6.7mm、6.8mm、6.9mm、7.0mm、7.1mm、7.2mm、7.3mm、7.4mm、7.5mm、7.6mm、7.7mm、
7.8mm, 7.9mm, 8.0mm, 8.5mm, 9mm, 9.5mm, 10mm equal-specification, wall thickness can select 16mm, 17mm, 18mm, 19mm,
20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm equal-specification, above-mentioned specification can be any
Combination is equally reached above-mentioned using effect of the present utility model.
Claims (10)
1. noise reduction rectifier structure, including tubular construction, it is characterised in that one-level loose structure (2), two are provided with inside the tubular construction
Level loose structure (3), the loose structure that the one-level loose structure (2) is formed for foam metal, the two level loose structure (3)
For the loose structure being made up of Aluminum Honeycomb Cores.
2. noise reduction rectifier structure as claimed in claim 1, it is characterised in that the aperture of one-level loose structure (2) is 1-5mm,
Wall thickness is 10-15mm.
3. noise reduction rectifier structure as claimed in claim 1, it is characterised in that the one-level loose structure (2) is foam copper, bubble
The loose structure that a kind of foam metal in foam aluminium, nickel foam is formed.
4. noise reduction rectifier structure as claimed in claim 1, it is characterised in that the aperture of the two level loose structure (3) be 4~
10mm, wall thickness are 15~30mm.
5. noise reduction rectifier structure as claimed in claim 1, it is characterised in that the inwall of the tubular construction supplied two level provided with one week
The ledge structure of loose structure (3) installation, the one-level loose structure (2) are pressed two level loose structure (3) by compressing structure
Tightly at ledge structure.
6. noise reduction rectifier structure as claimed in claim 5, it is characterised in that the compressing structure is including pressing plate (4) and admittedly
The bolt arrangement of fixed pressuring plate (4).
7. noise reduction rectifier structure as claimed in claim 1, it is characterised in that the one-level loose structure (2) and the two level
Loose structure (3) adjacent setting.
8. ultrasonic flowmeter, including ultrasonic flowmeter main body and the drop that is arranged at ultrasonic flowmeter main body air inlet
Make an uproar rectifier structure, it is characterised in that the noise reduction rectifier structure is the drop described in any one claim in claim 1-7
Make an uproar rectifier structure.
9. ultrasonic flowmeter as claimed in claim 8, it is characterised in that the tubular construction is to be external in ultrasonic flowmeter
The adapter (A) of main body air inlet.
10. ultrasonic flowmeter as claimed in claim 8, it is characterised in that the tubular construction is ultrasonic flowmeter valve body
(B)。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014450A (en) * | 2017-04-29 | 2017-08-04 | 成都伦慈仪表有限公司 | The ultrasonic flowmeter of noise reduction rectifier structure and its composition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014450A (en) * | 2017-04-29 | 2017-08-04 | 成都伦慈仪表有限公司 | The ultrasonic flowmeter of noise reduction rectifier structure and its composition |
| CN107014450B (en) * | 2017-04-29 | 2023-11-14 | 成都伦慈仪表有限公司 | Noise reduction rectifying structure and ultrasonic flowmeter comprising same |
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