CN203011450U - Multi-tube mass flowmeter - Google Patents
Multi-tube mass flowmeter Download PDFInfo
- Publication number
- CN203011450U CN203011450U CN 201220713339 CN201220713339U CN203011450U CN 203011450 U CN203011450 U CN 203011450U CN 201220713339 CN201220713339 CN 201220713339 CN 201220713339 U CN201220713339 U CN 201220713339U CN 203011450 U CN203011450 U CN 203011450U
- Authority
- CN
- China
- Prior art keywords
- flowtube
- porous
- groups
- mass flowmeter
- shunting body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000013016 damping Methods 0.000 claims abstract description 24
- 239000011148 porous material Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 8
- 238000009877 rendering Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000005219 brazing Methods 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
Disclosed is a multi-tube mass flowmeter which is provided with cylindrical porous splitters. One side of each porous splitter is of a plane and the other side of the porous splitter is of a cambered surface; the cambered surface is of a conical end face, and a flow cavity is reserved at the center of the cambered surface and provided with four to eight through orifices; the orifices are tangent with the conical surface, and the tangent plane is a bevel face. Each of 4-8 flow tubes is in the shape of a trapezoid with four bends, and radiuses of the four bends are equal. The quantity of the flow tubes is equal to that of the porous flow splitter. Through holes in number equal to that of the orifices of each of the porous splitter are reserved on a damping plate circumferentially. The four to eight flow tubes are grouped by every two, the flow tubes in each group are parallel, straight sections of two ends of each group of the flow tubes penetrate through holes in two damping plates which are integrated with each other, are communicated with the orifices of the porous splitters, and the bevel faces of the porous flow splitters are fixedly connected with the damping plates. The multi-tube mass flowmeter is compact in integral structure, small in size, high in assembling precision and low in noise, and has wide development space.
Description
Technical field
The utility model relates to the improvement to the coriolis mass flowmeters structure.
Background technology
The bigbore development of coriolis mass flowmeters is a bottleneck always, and its analysis of causes is as follows:
Mass flowmeter mostly is single tube and two-tube as the sensing original paper at present.As the flowtube of sensing original paper, the heavy caliber instrument will strengthen its caliber; And the caliber increasing will improve the power of magnetoelectricity system, and then cause safety installations to be difficult to realize.
The flow caliber strengthens, and the flowtube manufacture difficulty also strengthens thereupon.Now in order to solve this difficult problem, take the flowtube sectional making, but assembly welding is difficult to guarantee precision, finally causes accuracy of instrument low.
The flow caliber strengthens, and just must strengthen wall thickness for guaranteeing working pressure; Wall thickness strengthens, and just must lengthen the length of flowtube for keeping better suited frequency of operation, namely can cause the overall dimension of instrument to strengthen.Strengthen the rigidity that has improved flowtube due to wall thickness, frequency of operation is improved, reduce amplitude, the signal of collection is reduced, thereby increased the difficulty of Electric signal processing.And heavy caliber sensor shell precision is difficult to improve, because the low accuracy of instrument that causes of shell precision is inferior.
Damping sheet should be two of every group of flowtube according to conventional design, if three groups of flowtube are arranged, six dampings will be arranged; If fill six damping sheets, easily occurrence frequency vibration, the vector force that its amplitude produces is mutually interfered and is produced very large noise.
Comprehensively above-mentioned, all difficult problems have caused the obstacle of heavy caliber mass flowmeter development.
The utility model content
The multitube mass flowmeter is characterized in that, the porous shunting body is right cylinder, and porous shunting body one side is the plane, and another side is cambered surface;
The end face of cambered surface is the conical surface, and the core of cambered surface is fluid an actor's rendering of an operatic tune; Have the pore of four～eight perforations on fluid an actor's rendering of an operatic tune; Pore and the conical surface are tangent, and the phase tangent plane is groove face;
Flowtube be shaped as four curved trapezoidal, four curved radiuses all equate; The quantity of flowtube equates with the quantity of porous shunting body pore;
Damping sheet has the through hole that equates with porous shunting body pore number along excircle part;
Four～eight flowtube are arranged, and every two flowtube are one group, during installation, every group of flowtube is parallel to each other, the two ends straight line pipeline section of every group of flowtube passes respectively the through hole in the damping sheet of two integral body, is communicated with the pore sealing of porous shunting body, and groove face and the damping sheet of porous shunting body are affixed.
Adopt porous structure on shunting body, its effect is in order to dwindle caliber, and one-piece construction is simplified, and integral body is more compact, is convenient to equilibrium of forces; Adopt arc shape can greatly reduce the generation of fluid vortex.
Flowtube be shaped as four curved trapezoidal, this four isometrical curved structures can be convenient to forming operation on CNC tube bending machine, thereby have improved accuracy of instrument; And damping sheet is arranged in the straight line pipeline section, can improve the instrument assembly precision.During installation, every group of flowtube is parallel to each other, and the purpose of this structure is to be difficult for the bubble that condenses in pipe when guaranteeing the installation of instrument level.
Damping sheet plays the effect of elastic damping in mass flowmeter, the seismic inertia of its flowtube of damping is subdued the vibration unofficial biography, in case cause interference noise to produce.The utility model adopts two monoblock type damping sheets, can make designs simplification, and containing frequency of operation and vector force are convenient to equilibrium of forces, greatly reduce noise; Its straight-line segment that is arranged in flowtube can improve assembly precision.
The utility model flowtube adopts the multitube structure, can make the mass flowmeter compact overall structure, and volume reduces, and has improved the assembly precision of instrument, and noise reduces greatly; Flowtube multitube structure provides the space to the development of mass flowmeter.
Description of drawings
Accompanying drawing 1 a kind of example structure schematic diagram of the utility model.
Accompanying drawing 2 the utility model are porous shunting body structural representations.
Accompanying drawing 3 is rear views of Fig. 2.
Accompanying drawing 4 is the utility model flowtube structural representations.
Accompanying drawing 5 is the utility model damping sheet structural representations.
Accompanying drawing 6 is the utility model the second example structure schematic diagram.
Accompanying drawing 7 is the third example structure schematic diagram of the utility model.
1 joint flange,
2 damping sheets, 21 through holes,
3 porous shunting bodies, 31 cambered surfaces, 32 conical surfaces, 33 fluid an actor's rendering of an operatic tune, 34 pores, 35 planes, 36 groove faces, 37 expanded tube hole grooves
4 trapezoidal flowtube, 41 straight line pipeline sections, 42 trapezoidal small ends,
Embodiment
Multitube mass flowmeter, its structure be, porous shunting body 3 is right cylinder, and porous shunting body one side is plane 35, and another side is cambered surface 31; The end face of cambered surface is the conical surface 32, and the core of cambered surface is fluid an actor's rendering of an operatic tune 33; Have the pore 34 of six perforations on fluid an actor's rendering of an operatic tune; Pore and the conical surface are tangent, and the phase tangent plane is groove face 36; Flowtube 4 be shaped as four curved trapezoidal, four curved radiuses all equate; Damping sheet 2 has six through holes 21 along excircle part;
Six flowtube are arranged, every two flowtube are one group, the two ends straight line pipeline section 41 of every group of flowtube passes respectively the through hole in the damping sheet 2 of two integral body, be communicated with pore 34 sealings of porous shunting body, every group of flowtube is parallel to each other, wherein two groups of flowtube levels are installed, and another group flowtube is that the downward vertical of trapezoidal small end 42 is installed; The groove face 36 of porous shunting body is affixed with damping sheet.
The flowtube external diameter is determined according to the caliber ratio:
Wherein, d is the flowtube external diameter,
DN is flange 1 engineering bore,
N is the flowtube number.
In the present embodiment, the flowtube external diameter is Φ 108 mm, and wall thickness is 2.5mm.
The plane 35 of two flowtube is affixed with two joint flanges 1 respectively.
Flowtube is connected employing expanded and welded tube joint technique with the porous shunting body; The characteristics of this structure be pipe tube pitch---official's bridge is little, dwindled gap between pipe, can make compact conformation, reduce volume, optimize to use install.
Flowtube adopts copper base vacuum brazing technique with being connected of damping sheet, can make it in conjunction with densification, meets the technological requirement of dye penetrant inspection in ASME31.3.
Described flowtube has two groups four, and during installation, two groups of flowtube are set up in parallel up and down, and the downward vertical of trapezoidal small end is installed.
Other structures are with embodiment 1.
Described flowtube has four groups eight, and wherein two groups of flowtube are set up in parallel up and down, and the downward vertical of trapezoidal small end is installed; Another two groups of flowtube levels are installed relatively, and trapezoidal small end is outside.
Other structures are with embodiment 1.
Claims (5)
1. the multitube mass flowmeter, is characterized in that, the porous shunting body is right cylinder, and porous shunting body one side is the plane, and another side is cambered surface;
The end face of cambered surface is the conical surface, and the core of cambered surface is fluid an actor's rendering of an operatic tune; Have the pore of four～eight perforations on fluid an actor's rendering of an operatic tune; Pore and the conical surface are tangent, and the phase tangent plane is groove face;
Flowtube be shaped as four curved trapezoidal, four curved radiuses all equate; The quantity of flowtube equates with the quantity of porous shunting body pore;
Damping sheet has the through hole that equates with porous shunting body pore number along excircle part;
Four～eight flowtube are arranged, and every two flowtube are one group, during installation, every group of flowtube is parallel to each other, the two ends straight line pipeline section of every group of flowtube passes respectively the through hole in the damping sheet of two integral body, is communicated with the pore sealing of porous shunting body, and groove face and the damping sheet of porous shunting body are affixed.
2. according to multitube mass flowmeter claimed in claim 1, it is characterized in that, described flowtube has two groups four, and two groups of flowtube are set up in parallel up and down, and the downward vertical of trapezoidal small end is installed;
Described flowtube has three groups six, and wherein two groups of flowtube levels are installed relatively, and trapezoidal small end is outside, and another group flowtube is that the downward vertical of trapezoidal small end is installed;
Described flowtube has four groups eight, and wherein two groups of flowtube are set up in parallel up and down, and the downward vertical of trapezoidal small end is installed; Another two groups of flowtube levels are installed relatively, and trapezoidal small end is outside.
3. according to the described multitube mass flowmeter of claim 1 or 2, it is characterized in that,
The flowtube external diameter is determined according to the caliber ratio:
Wherein, d is the flowtube external diameter,
DN is flange 1 engineering bore,
N is the flowtube number.
4. according to multitube mass flowmeter claimed in claim 3, it is characterized in that, the plane of two flowtube is affixed with two joint flanges respectively.
5. according to multitube mass flowmeter claimed in claim 4, it is characterized in that, flowtube is connected employing expanded and welded tube joint technique with the porous shunting body; Flowtube adopts copper base vacuum brazing technique with being connected of damping sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713339 CN203011450U (en) | 2012-12-21 | 2012-12-21 | Multi-tube mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220713339 CN203011450U (en) | 2012-12-21 | 2012-12-21 | Multi-tube mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011450U true CN203011450U (en) | 2013-06-19 |
Family
ID=48603036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220713339 Expired - Fee Related CN203011450U (en) | 2012-12-21 | 2012-12-21 | Multi-tube mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884394A (en) * | 2012-12-21 | 2014-06-25 | 上海一诺仪表有限公司 | Multi-pipe mass flowmeter |
-
2012
- 2012-12-21 CN CN 201220713339 patent/CN203011450U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884394A (en) * | 2012-12-21 | 2014-06-25 | 上海一诺仪表有限公司 | Multi-pipe mass flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |