CN110686741A - Joint structure for mass flowmeter and mass flowmeter - Google Patents
Joint structure for mass flowmeter and mass flowmeter Download PDFInfo
- Publication number
- CN110686741A CN110686741A CN201911153007.6A CN201911153007A CN110686741A CN 110686741 A CN110686741 A CN 110686741A CN 201911153007 A CN201911153007 A CN 201911153007A CN 110686741 A CN110686741 A CN 110686741A
- Authority
- CN
- China
- Prior art keywords
- flow
- tube
- joint structure
- mass flowmeter
- mass
- 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.)
- Pending
Links
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005219 brazing Methods 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 229910052786 argon Inorganic materials 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a joint structure for a mass flowmeter and the mass flowmeter. According to the invention, the reinforcing ring is arranged between the flow divider and the flow tube of the mass flowmeter, and a mode of combining argon arc welding and vacuum brazing is adopted, so that the sufficient contact between the flow tube and the flow divider is ensured, and the potential safety hazard caused by the corrosion of a brazing welding seam is prevented.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a joint structure for a mass flowmeter and the mass flowmeter.
Background
Mass flowmeters are also known as coriolis flowmeters, an important design of which is dual or multi-tube meters that employ flow splitters to split the fluid from an external conduit to two or more measurement tubes for measurement. Thus, how to connect the flow splitter and the measurement tube is an important consideration.
Vacuum brazing techniques are currently commonly used to braze the flow splitters, flow tubes, and other accessory parts together. As shown in fig. 1, a flow tube 1 and a flow splitter 4 are joined together by a braze joint 2 using a vacuum brazing process. When the medium 5 passes through the flowmeter, it will directly contact the braze weld 2 through the gap 3 between the flow tube and the flow divider. Due to the composition difference between the common nickel-based brazing filler metal and the base material and the process defects generated in the brazing process, local corrosion near a stainless steel brazing joint is often caused when the brazing joint is used in a corrosive environment.
With the widespread use of mass flowmeters, corrosion of brazed joints is of increasing concern. Particularly, under the working conditions of high-corrosive media such as strong acid, strong alkali and the like, medium leakage caused by corrosion of a brazing welding seam happens occasionally, and great potential safety hazards are caused. In addition, there is a demand for improving the compressive strength of the connection portion even for a medium which is high in pressure but is not corrosive.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a joint structure for a mass flow meter and a mass flow meter that overcome the above problems.
According to one aspect of the present invention, a joint structure for a mass flowmeter is provided that includes a flow splitter and a flow tube, and further includes a stiffening ring disposed between the flow splitter and the flow tube.
Preferably, the inside of the stiffening ring is connected to the outside of the flow tube.
Preferably, the outer side of the reinforcement ring is connected to the inner side of the shunt.
Preferably, the reinforcing ring is made of the same material as the flow tube.
Preferably, the bottom of the flow tube and the bottom of the reinforcing ring are connected by argon arc welding seams.
Preferably, the top of the reinforcing ring is connected with the flow divider through argon arc welding seams.
Preferably, the gap between the inside of the stiffening ring and the outside of the flow tube is filled with a braze weld.
Preferably, the gap between the inner side of the reinforcement ring and the inner side of the flow divider is filled with a brazing seam.
Preferably, the flow tube is a U-shaped tube, a V-shaped tube, an Ω -shaped tube, or a straight tube.
According to yet another aspect of the present invention, there is provided a mass flow meter including the aforementioned joint structure.
Compared with the prior art, the flow divider has the advantages that the reinforcing ring is arranged between the flow divider and the flow tube, and a mode of combining argon arc welding and vacuum brazing is adopted, so that the flow tube and the flow divider can be ensured to be fully contacted, and potential safety hazards caused by corrosion of a brazing welding seam can be prevented.
Drawings
Fig. 1 is a cross-sectional view of a joint structure of a mass flow meter in the related art.
Fig. 2 is a cross-sectional view of a joint structure of a mass flow meter according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of a flow tube and stiffener ring junction of a mass flow meter according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 2 to 3, in an embodiment of the present invention, a joint structure for a mass flowmeter includes a flow divider 11 and a flow tube 6, and further includes a reinforcing ring 7, where the reinforcing ring 7 is disposed between the flow divider 11 and the flow tube 6.
In one example, the inside of the stiffening ring 7 is connected to the outside of the flow tube 6.
In one example, the outside of the reinforcement ring 7 is connected to the inside of the flow splitter 11.
In one example, the stiffening ring 7 is the same material as the flow tube 6.
In one example, the bottom of the flow tube 6 is connected to the bottom of the stiffening ring 7 by an argon arc weld 13. The brazing weld 10 is prevented from being in direct contact with the medium due to the presence of the argon arc weld 13.
In one example, the top of the stiffener ring 7 is connected to the diverter 11 by an argon arc weld 9. The argon arc weld 9 ensures that the gauge does not leak in the event of corrosion of the braze weld 8.
In one example, the gap between the inside of the stiffening ring 7 and the outside of the flow tube 6 is filled with a braze weld 10.
In one example, the gap between the inside of the reinforcement ring 7 and the inside of the flow splitter 11 is filled with a braze weld 8.
In one example, the flow tube 6 is a U-tube, V-tube, omega-tube, or straight tube.
According to another embodiment of the present invention, there is provided a mass flow meter including the aforementioned joint structure.
According to the invention, the reinforcing ring 7 is arranged between the flow divider 11 and the flow tube 6, and a mode of combining argon arc welding and vacuum brazing is adopted, so that the flow tube 6 is ensured to be fully contacted with the flow divider 11, and potential safety hazards caused by corrosion of a brazing welding seam are prevented.
The invention is suitable for various known flow tube types, including but not limited to U-shaped tubes, V-shaped tubes, omega-shaped tubes, straight tubes and the like;
the invention is suitable for various known mass flow meter materials, including but not limited to 316L, Hastelloy, super dual-phase steel, titanium alloy and the like.
The above description is only for explaining the present invention, so that the person skilled in the art can fully implement the present invention, but not for limiting the present invention, and after reading the present specification, the person skilled in the art can make modifications without inventive contribution to the present embodiment, which are all non-inventive modifications. But are protected by the patent statutes within the scope of the appended claims.
Claims (10)
1. A joint structure for a mass flowmeter comprises a flow divider and a flow tube and is characterized by further comprising a reinforcing ring, wherein the reinforcing ring is arranged between the flow divider and the flow tube.
2. The joint structure for a mass flow meter according to claim 1, characterized in that an inner side of said reinforcing ring is connected to an outer side of said flow tube.
3. The joint structure for a mass flow meter according to claim 1, characterized in that an outer side of the reinforcement ring is joined to an inner side of the flow diverter.
4. The joint structure for a mass flow meter according to claim 1, wherein a material of said reinforcing ring is the same as a material of said flow tube.
5. The joint structure for a mass flow meter according to claim 1, wherein the bottom of said flow tube and the bottom of said reinforcing ring are joined by argon arc welding.
6. The joint structure for a mass flow meter according to claim 1, wherein the top of the reinforcing ring and the flow divider are joined by argon arc welding.
7. The joint structure for a mass flow meter according to claim 2, characterized in that a gap between an inner side of the reinforcing ring and an outer side of the flow tube is filled with a brazing weld.
8. The joint structure for a mass flow meter according to claim 1, characterized in that a gap between an inner side of the reinforcement ring and an inner side of the flow divider is filled with a brazing weld.
9. The joint structure for a mass flow meter according to claim 1, wherein said flow tube is a U-shaped tube, a V-shaped tube, an Ω -shaped tube, or a straight tube.
10. A mass flow meter, characterized in that it comprises a joint construction according to claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153007.6A CN110686741A (en) | 2019-11-22 | 2019-11-22 | Joint structure for mass flowmeter and mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153007.6A CN110686741A (en) | 2019-11-22 | 2019-11-22 | Joint structure for mass flowmeter and mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686741A true CN110686741A (en) | 2020-01-14 |
Family
ID=69117347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911153007.6A Pending CN110686741A (en) | 2019-11-22 | 2019-11-22 | Joint structure for mass flowmeter and mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686741A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030079554A1 (en) * | 2000-09-22 | 2003-05-01 | Micro Motion, Inc. | Method and apparatus for bonding a connecting ring to a flow tube and balance bar having different thermal coefficients of expansion in a Coriolis flowmeter |
| US6598489B1 (en) * | 2002-03-29 | 2003-07-29 | Micro Motion, Inc. | Balance bar having a reduced axial thermal stress resulting from high temperature manufacturing methods |
| DE59511087D1 (en) * | 1995-06-14 | 2007-12-06 | Endress & Hauser Deutschland A | Coriolis mass flow sensor with a single measuring tube |
| CN101745721A (en) * | 2008-12-09 | 2010-06-23 | 上海一诺仪表有限公司 | Welding method of damper plate and flow tube in Coriolis mass flowmeter |
| CN201637449U (en) * | 2010-04-22 | 2010-11-17 | 成都安迪生测量有限公司 | Inlet and outlet combined type distribution cone of Coriolis mass flow meter |
| CN203241091U (en) * | 2013-05-08 | 2013-10-16 | 瑞大集团有限公司 | Streamline type mass flow meter flow divider |
| CN107559541A (en) * | 2017-07-24 | 2018-01-09 | 黑龙江省易爱蒽新材料科技发展有限公司 | Anticorrosion structure and its manufacturing process in a kind of pipe welding port |
| CN110388967A (en) * | 2019-09-02 | 2019-10-29 | 上海一诺仪表有限公司 | The shunting body of U-shaped Coriolis mass flowmeter and U-shaped Coriolis mass flowmeter |
-
2019
- 2019-11-22 CN CN201911153007.6A patent/CN110686741A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59511087D1 (en) * | 1995-06-14 | 2007-12-06 | Endress & Hauser Deutschland A | Coriolis mass flow sensor with a single measuring tube |
| US20030079554A1 (en) * | 2000-09-22 | 2003-05-01 | Micro Motion, Inc. | Method and apparatus for bonding a connecting ring to a flow tube and balance bar having different thermal coefficients of expansion in a Coriolis flowmeter |
| US6598489B1 (en) * | 2002-03-29 | 2003-07-29 | Micro Motion, Inc. | Balance bar having a reduced axial thermal stress resulting from high temperature manufacturing methods |
| CN101745721A (en) * | 2008-12-09 | 2010-06-23 | 上海一诺仪表有限公司 | Welding method of damper plate and flow tube in Coriolis mass flowmeter |
| CN201637449U (en) * | 2010-04-22 | 2010-11-17 | 成都安迪生测量有限公司 | Inlet and outlet combined type distribution cone of Coriolis mass flow meter |
| CN203241091U (en) * | 2013-05-08 | 2013-10-16 | 瑞大集团有限公司 | Streamline type mass flow meter flow divider |
| CN107559541A (en) * | 2017-07-24 | 2018-01-09 | 黑龙江省易爱蒽新材料科技发展有限公司 | Anticorrosion structure and its manufacturing process in a kind of pipe welding port |
| CN110388967A (en) * | 2019-09-02 | 2019-10-29 | 上海一诺仪表有限公司 | The shunting body of U-shaped Coriolis mass flowmeter and U-shaped Coriolis mass flowmeter |
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| PB01 | Publication | ||
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