CN220037841U - Damping device for mass flowmeter - Google Patents
Damping device for mass flowmeter Download PDFInfo
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- CN220037841U CN220037841U CN202321107675.7U CN202321107675U CN220037841U CN 220037841 U CN220037841 U CN 220037841U CN 202321107675 U CN202321107675 U CN 202321107675U CN 220037841 U CN220037841 U CN 220037841U
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- damping
- damping plate
- vibration
- plate
- corrugated
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- 238000013016 damping Methods 0.000 title claims abstract description 181
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000035939 shock Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims 7
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000009499 grossing Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to a damping device of a mass flowmeter, which comprises a damping structure and damping materials in the damping structure, wherein the damping structure adopts a damping plate, and the damping materials adopt a corrugated elastic bellows damping plate. The damping plate in the damping device adopts the damping structure and the damping material, can effectively absorb the vibration energy (internal factors) transmitted when the flow measuring tube vibrates and the vibration energy (external factors) generated by the external influence on the pipeline, so that the external vibration energy of the pipeline and the like can be used for measuring the vibration allowance energy of the flow tube, the energy of the vibration is absorbed and slowed down at the damping plate, and the vibration allowance energy is released at the negative half cycle of the vibration wave, so that the amplitude of the vibration is slowed down (the amplitude frequency is unchanged), thereby effectively reducing and smoothing the amplitude of the internal vibration wave and the external vibration wave of the vibration wave, further improving the normal operation of the flow tube and the measurement stability, the measurement precision, the reliability, the effectiveness and the safety of the mass flowmeter.
Description
Technical Field
The utility model relates to a mass flowmeter, in particular to a damping device of the mass flowmeter.
Background
Currently, mass flowmeters have become one of the most accurate flow meters in flow measurement, and the accuracy of a typical flow meter is: liquid (water or oil) was measured as grade 0.5 and grade 1.0, and gas was measured as grade 1.0 and grade 1.5. While mass flow meters can measure liquids to 0.1 and 0.2 levels, and gases to 0.2 and 0.3 levels. The whole measuring circulation pipeline has no movable or rotary parts, can work reliably for a long time, has low requirements on measured media, and has low requirements on front and rear straight pipe sections of the measuring pipeline. In the design and assembly of the mass flowmeter, the most important work is to make the flow measuring tube have large amplitude (output large measurable signals) as much as possible under the condition of the same measured flow, and to make the influence of the vibration amplitude of the flow measuring tube on the shell and other parts (the professional term is called as external transmission) be reduced or eliminated as much as possible; at the same time, the vibration of the pipeline on which the mass flowmeter is mounted is also transmitted to the flow tube, and the vibration is superimposed on the vibration of the flow tube caused by normal flow, thereby causing measurement errors.
The structure of the mass flowmeter mainly comprises four parts, namely a supporting tube (with a flange, a split fluid and a supporting tube); secondly, a flow measuring tube (comprising a flow measuring tube, a driving coil, a detecting coil and a damping plate); thirdly, a shell is closed; fourthly, the header.
At present, the shock absorbing damping device and measuring flow tube mounting structure is composed of a common damping plate 1 of a mass flowmeter and a measuring flow tube 2 as shown in fig. 1. Wherein the structure of a common damping plate 1 of a mass flowmeter is shown in fig. 2 and 3.
Due to the working principle of the mass flowmeter, when the flow passes, two flow measuring tubes arranged side by side generate opposite (opposite) vibration by utilizing the coriolis force principle, and generate opposite (opposite) displacement, speed, acceleration and angle torsion, and the flow can be detected by detecting the variation (any one) and performing gauge head shaping treatment.
The current problems are: the method comprises the following steps: to obtain a stronger signal (i.e., a large amount of variation), the enhanced vibration is increased by the size and shape of the flow measurement tube. In this way, in addition to the generation of useful signals, the vibration margin of the vibration is transferred to the split body along the tail end of the measuring flow tube, and then transferred to the mounting pipeline, so that the resonance of the pipeline is caused, and the vibration is reacted to the measuring flow tube to influence the original vibration (namely, internal influence factors) of the measuring flow tube, so that the normal vibration motion is deviated, and the measurement accuracy of the mass flowmeter is influenced.
And two,: various vibrations on the outside and the pipeline can be transmitted to the flow measuring pipe through the flange and the split body, so that normal vibration movement (namely external influence factors) of the flow measuring pipe is influenced, and the measurement accuracy of the mass flowmeter is further influenced.
Therefore, it is necessary to design a vibration damping device for a mass flowmeter for ensuring that energy of housing vibration (external transmission term) and pipeline vibration caused by operating vibration of a flow measuring tube of the mass flowmeter in operation is absorbed and eliminated at the vibration damping device under the operating condition, thereby ensuring normal operation and accuracy of the mass flowmeter.
Disclosure of Invention
Aiming at the problem of external transmission of vibration energy of the mass flowmeter, the utility model provides the damping device of the mass flowmeter, which is safe, reliable, simple in structure and easy to produce.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a damping device of a mass flowmeter comprises a damping structure and damping materials in the damping structure, wherein the damping structure adopts a damping plate, and the damping materials adopt a corrugated elastic bellows damping plate.
Further, the shock absorbing damping plate is provided with a connecting hole for connecting the measuring flow tube.
Further, the damping plate is a damping I-type damping plate and comprises an upper damping plate I, a middle damping plate I, a lower damping plate I and fastening bolts. The upper damping plate I, the middle damping plate I and the lower damping plate I are sequentially stacked and fixedly connected together through two fastening bolts, wherein the lengths and the widths of the upper damping plate I, the middle damping plate I and the lower damping plate I are outwards extended in sequence to form a gradual damping I type damping plate.
Further, the damping plate is a damping II type damping plate and comprises an upper damping plate II, a middle damping plate II, a lower damping plate II and fastening bolts. The upper damping plate II, the middle damping plate II and the lower damping plate II are sequentially stacked and fixedly connected together through two fastening bolts, wherein the widths of the upper damping plate II, the middle damping plate II and the lower damping plate II are the same, and the lengths of the upper damping plate II, the middle damping plate II and the lower damping plate II are outwards sequentially extended to form a gradual damping type II damping plate.
Further, the corrugated elastic membrane box damping plate consists of an upper corrugated membrane box sheet and a lower corrugated membrane box sheet, wherein the upper corrugated membrane box sheet and the lower corrugated membrane box sheet are of symmetrical structures and are connected into a whole through welding, and a cavity is formed in the middle of the upper corrugated membrane box sheet and the lower corrugated membrane box sheet.
Further, the surfaces of the upper corrugated bellows sheet and the lower corrugated bellows sheet are provided with corrugated grooves, and the corrugated grooves are annular and respectively encircle the connecting hole of the middle single measuring flow tube and the connecting holes of the two measuring flow tubes.
The utility model has the beneficial effects that: the damping plate in the damping device adopts a damping structure and damping materials, can effectively absorb vibration energy (internal factors) transmitted when the flow measuring tube vibrates and vibration energy (external factors) generated by external influences on the pipeline, so that the external vibration energy of the pipeline and the like can be used for measuring the vibration allowance energy of the flow tube, the energy of the vibration is absorbed and slowed down at the damping plate and released at the negative half cycle of the vibration wave, thus the amplitude (amplitude frequency is unchanged) of the vibration wave is slowed down, the amplitude of the internal vibration wave and the external vibration wave of the vibration wave is effectively reduced and smoothed, the normal operation of the flow tube is further improved, the stability, the measurement accuracy, the reliability and the effectiveness of the measurement of the mass flowmeter are improved, and the safety is improved.
Drawings
FIG. 1 is a diagram of a shock absorbing damping device and a measuring flow tube installation;
FIG. 2 is a schematic diagram of a front view of a prior art damping plate;
FIG. 3 is a schematic diagram of a right side view of a prior art damping plate;
FIG. 4 is a front view of a shock absorbing I-type damping plate of the shock absorbing device of the present utility model;
FIG. 5 is a top view of a shock absorbing I-type damping plate of the shock absorbing device of the present utility model;
FIG. 6 is a front view of a damping II type damping plate of the damping device of the present utility model;
FIG. 7 is a top view of a shock absorbing type II damping plate of the shock absorbing device of the present utility model;
FIG. 8 is a front view of a bellows damper plate of the damper device of the present utility model;
FIG. 9 is a top view of a bellows damper plate of the damper device of the present utility model;
in the figure: the mass flowmeter comprises a common damping plate 1, a measuring flow tube 2, an upper damping plate I3, a middle damping plate I4, a lower damping plate I5, a fastening bolt 6, an upper damping plate II 7, a middle damping plate II 8, a lower damping plate II 9, an upper corrugated bellows sheet 10 and a lower corrugated bellows sheet 11.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
As shown in fig. 4 to 9, the vibration damping device of the mass flowmeter according to the present utility model adopts a vibration damping structure and a vibration damping material, so that vibration energy (internal factor) transmitted during vibration of the flow measuring tube and vibration energy (external factor) generated by external influence of the pipeline can be effectively absorbed, external vibration energy such as the pipeline is enabled, vibration allowance energy of vibration of the flow measuring tube is measured, and the energy is absorbed and relieved at the vibration damping plate and released at the negative half cycle of the vibration wave, thereby reducing and smoothing amplitude (amplitude frequency is unchanged) of the vibration wave, thereby effectively reducing and smoothing amplitude of internal and external vibration wave of the vibration wave, further improving normal operation of the flow measuring tube, and improving stability, measurement accuracy, reliability, effectiveness and safety of measurement of the mass flowmeter.
The damping structure adopts the damping plate, and the damping design is carried out on the material and the shape of the damping plate under the condition of not changing the original design.
Compared with the original damping plate, the damping plate has two aspects, namely, a damping structure (damping I, II type damping plate) is adopted; and the second is to use damping material (corrugated elastic bellows damping plate).
As shown in fig. 4 and 5, the damping I-type damping plate consists of an upper damping plate I3, a middle damping plate I4, a lower damping plate I5 and a fastening bolt 6. The damping plate I3, the middle damping plate I4 and the lower damping plate I5 are sequentially stacked and fixedly connected together through two fastening bolts 6. The length and the width of the damping plate I3, the middle damping plate I4 and the lower damping plate I5 are outwards extended in sequence to form a gradual damping type I damping plate. The damping I-shaped damping plate is provided with a connecting hole for connecting the measuring flow tube 2.
As shown in fig. 6 and 7, the damping plate ii is composed of an upper damping plate ii 7, a middle damping plate ii 8, a lower damping plate ii 9 and a fastening bolt 6. The upper damping plate II 7, the middle damping plate II 8 and the lower damping plate II 9 are sequentially stacked and fixedly connected together through two fastening bolts 6. The upper damping plate II 7, the middle damping plate II 8 and the lower damping plate II 9 are the same in width and are outwards extended in sequence to form a gradual damping type II damping plate. The damping plate II is also provided with a connecting hole for connecting the measuring flow tube 2.
Damping materials in the damping I type damping plate and the damping II type damping plate are corrugated elastic bellows damping plates.
As shown in fig. 8 and 9, the bellows elastic bellows damping plate is composed of an upper bellows sheet 10 and a lower bellows sheet 11. The upper corrugated bellows sheet 10 and the lower corrugated bellows sheet 11 are of symmetrical structure, are connected into a whole by welding, and have a cavity in the middle. The surfaces of the upper corrugated bellows sheet 10 and the lower corrugated bellows sheet 11 are provided with corrugated grooves, and the corrugated grooves are annular and respectively encircle the connecting hole of the single measuring flow tube 2 in the middle and the connecting holes of the two measuring flow tubes 2.
Claims (5)
1. A vibration damping device of a mass flowmeter, characterized in that: the damping structure comprises a damping structure and damping materials in the damping structure, wherein the damping structure adopts a damping plate, and the damping materials adopt a corrugated elastic bellows damping plate; the corrugated elastic diaphragm capsule damping plate consists of an upper corrugated diaphragm capsule sheet and a lower corrugated diaphragm capsule sheet, wherein the upper corrugated diaphragm capsule sheet and the lower corrugated diaphragm capsule sheet are of symmetrical structures and are connected into a whole through welding, and a cavity is formed in the middle of the upper corrugated diaphragm capsule sheet and the lower corrugated diaphragm capsule sheet.
2. The mass flow meter vibration damping device of claim 1, wherein: the shock absorption damping plate is provided with a connecting hole for connecting the measuring flow tube.
3. The mass flow meter vibration damping device of claim 1, wherein: the damping plate is a damping I-type damping plate and is composed of an upper damping plate I, a middle damping plate I, a lower damping plate I and fastening bolts, wherein the upper damping plate I, the middle damping plate I and the lower damping plate I are sequentially stacked and fixedly connected together through the two fastening bolts, and the lengths and the widths of the upper damping plate I, the middle damping plate I and the lower damping plate I are outwards sequentially extended to form a gradual damping I-type damping plate.
4. The mass flow meter vibration damping device of claim 1, wherein: the damping plate is a damping II type damping plate and is composed of an upper damping plate II, a middle damping plate II, a lower damping plate II and fastening bolts, wherein the upper damping plate II, the middle damping plate II and the lower damping plate II are sequentially stacked and fixedly connected together through the two fastening bolts, the widths of the upper damping plate II, the middle damping plate II and the lower damping plate II are the same, and the lengths of the upper damping plate II, the middle damping plate II and the lower damping plate II are outwards extended to form a gradual damping II type damping plate.
5. The mass flow meter vibration damping device of claim 1, wherein: the surfaces of the upper corrugated bellows sheet and the lower corrugated bellows sheet are provided with corrugated grooves which are annular and respectively encircle the connecting hole of the middle single measuring flow tube and the connecting holes of the two measuring flow tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321107675.7U CN220037841U (en) | 2023-05-09 | 2023-05-09 | Damping device for mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321107675.7U CN220037841U (en) | 2023-05-09 | 2023-05-09 | Damping device for mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220037841U true CN220037841U (en) | 2023-11-17 |
Family
ID=88732527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321107675.7U Active CN220037841U (en) | 2023-05-09 | 2023-05-09 | Damping device for mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220037841U (en) |
-
2023
- 2023-05-09 CN CN202321107675.7U patent/CN220037841U/en active Active
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