CN103759770A - Vortex flowmeter and production method for same - Google Patents
Vortex flowmeter and production method for same Download PDFInfo
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- CN103759770A CN103759770A CN201310672935.XA CN201310672935A CN103759770A CN 103759770 A CN103759770 A CN 103759770A CN 201310672935 A CN201310672935 A CN 201310672935A CN 103759770 A CN103759770 A CN 103759770A
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Abstract
The invention discloses a vortex flowmeter and a production method for the same, which relate to the technical field of measurement instruments, and solve the technical problem of improving flow signal stability. The flowmeter comprises a measurement tube and a vortex generation column, wherein the measurement tube is a tube body with an open left end and an open right end, and a flow induction probe is installed on the measurement tube. The flowmeter is characterized in that the measurement tube is divided into a left tube section and a right tube section, wherein the inner diameter of the left tube section is greater than the inner diameter of the right tube section, and a sleeve with an open left end and an open right end is coaxially sleeved in the left tube section; the sleeve is in interference fit with the left tube section of the measurement tube, the right end surface of the sleeve is butted with the left end surface of the right tube section of the measurement tube, the inner diameter of the sleeve is equal to the inner diameter of the right tube section of the measurement tube, and the left end of the sleeve is level with the left end of the measurement tube in the left and right; the vortex generation column is fixed in the tube cavity of the sleeve, and the both ends of the vortex generation column are embedded in the tube wall of the sleeve respectively. According to the vortex flowmeter and the production method for the same provided by the invention, the flow signal stability is high.
Description
Technical field
The present invention relates to measurement instrument technology, particularly relate to the technology of a kind of swirl flowmeter and preparation method thereof.
Background technology
The principle of work of swirl flowmeter is: insertion-individual cylindricality restraining mass (vortex generation post) in the tube chamber of measuring tube, when fluid flows through cylindricality restraining mass in the tube chamber of measuring tube, both sides, the rear portion of cylindricality restraining mass (with respect to direction of flow) will alternately produce vortex, due to the cross frequence of vortex and the flow velocity of fluid linear, as long as detect the frequency of vortex separation, can calculate flow velocity or the flow of measuring tube inner fluid.
Advantages such as swirl flowmeter is because measuring accurately, simple in structure, convenient for installation and maintenance and being widely used.As shown in Figure 4, existing swirl flowmeter is all on the tube wall of the bottom of measuring tube 41, to offer the generation post mounting hole radially connecting, during assembling, vortex generation post 42 is inserted into the tube chamber of measuring tube from there is post mounting hole, the lumen wall of measuring tube offers circular hole slot for the top embedding of vortex generation post 42, until the top of vortex generation post 42, embed after the circular hole slot of measuring tube lumen wall, by vortex generation post 42 bottoms and the hole wall firm welding that post mounting hole occurs, vortex generation post 42 can be fixed again.
Existing swirl flowmeter is because of due to its structure and assembling mode, the circular groove that can leave two radial depressions at lumen wall and the vortex generation post binding site of measuring tube, because these two circular grooves are in measuring tube tube chamber, fill up more difficult, more difficult the filling up of the narrow and small small-bore measuring tube of tube chamber (DN25 is following) particularly, when these two circular grooves can cause fluid to flow through vortex generation post, flow field is inhomogeneous, and flow signal less stable can have influence on the normal measurement of flow.
Summary of the invention
For the defect existing in above-mentioned prior art, technical matters to be solved by this invention is to provide swirl flowmeter that a kind of flow signal stability is high and preparation method thereof.
In order to solve the problems of the technologies described above, a kind of swirl flowmeter provided by the present invention, comprises measuring tube, vortex generation post, and described measuring tube is the body of a left and right both ends open, and flow sensing probe is housed on measuring tube, it is characterized in that:
Described measuring tube is divided into the first from left right side totally two pipeline sections, and the internal diameter of left pipeline section is wherein greater than the internal diameter of right pipeline section, and coaxial sleeve is equipped with the sleeve pipe of a left and right both ends open in left pipeline section;
The left pipeline section interference fit of described sleeve pipe and measuring tube, the right side of sleeve pipe engages with the left side subtend of the right pipeline section of measuring tube, and the internal diameter of sleeve pipe is consistent with the internal diameter of the right pipeline section of measuring tube, and the left end of sleeve pipe aligns with measuring tube left end left and right;
Described vortex generation post is fixed in the tube chamber of sleeve pipe, and the two ends of vortex generation post embed respectively the tube wall of sleeve pipe.
Further, between the left side of the right side of described sleeve pipe and the right pipeline section of measuring tube, be equipped with at least one regulating ring, the internal-and external diameter of described regulating ring is consistent with sleeve pipe and coaxial with sleeve pipe, and dock with the left side of the right pipeline section of measuring tube by regulating ring the right side of sleeve pipe.
Further, described vortex generation post is fixed on the tube chamber right-hand member of sleeve pipe.
The method for making of swirl flowmeter provided by the present invention, is characterized in that, concrete steps are as follows:
1) according to the design bore of flowmeter, separately make measuring tube, sleeve pipe, and at least one regulating ring;
Wherein, the internal diameter of the right pipeline section of measuring tube and the internal diameter of sleeve pipe, all consistent with the design bore of flowmeter, the internal diameter interference fit of the external diameter of sleeve pipe and the left pipeline section of measuring tube;
2) vortex generation post is embedded in sleeve pipe, and by the tube wall firm welding of the two ends of vortex generation post and sleeve pipe;
3) first utilize frock each regulating ring to be inserted in the left pipeline section of measuring tube, recycling frock is inserted sleeve pipe in the left pipeline section of measuring tube, and the right side of sleeve pipe is docked with the left side of the right pipeline section of measuring tube by regulating ring;
4) sleeve pipe left end and measuring tube left end end face are welded and fixed;
5) on measuring tube, load onto flow sensing probe.
Swirl flowmeter provided by the invention and preparation method thereof, is embedded in vortex generation post in sleeve pipe, because the tube wall of sleeve pipe is relatively thin, welding easily and be beneficial to assembling, the internal face of sleeve pipe can not leave groove yet, and flow signal stability is higher, can guarantee the normal measurement of flow.
Accompanying drawing explanation
Fig. 1 is the main pseudosection of the swirl flowmeter of the embodiment of the present invention;
Fig. 2 is the main pseudosection of the measuring tube in the swirl flowmeter of the embodiment of the present invention;
Fig. 3 is the main pseudosection of the sleeve pipe in the swirl flowmeter of the embodiment of the present invention;
Fig. 4 is the main pseudosection of existing swirl flowmeter.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As shown in Figure 1-Figure 3, a kind of swirl flowmeter that the embodiment of the present invention provides, comprises measuring tube 1, vortex generation post 2, and described measuring tube 1 is the body of a left and right both ends open, and flow sensing probe 3 is housed on measuring tube 1, it is characterized in that:
Described measuring tube 1 is divided into the first from left right side totally two pipeline sections, and the internal diameter of left pipeline section 11 is wherein greater than the internal diameter of right pipeline section 12, and at the interior coaxial sleeve of left pipeline section 11, is equipped with the sleeve pipe 4 of a left and right both ends open;
Described sleeve pipe 4 and left pipeline section 11 interference fit of measuring tube, the right side of sleeve pipe 4 engages with the left side subtend of the right pipeline section 12 of measuring tube, and the internal diameter of sleeve pipe is consistent with the internal diameter of the right pipeline section of measuring tube, and the left end of sleeve pipe aligns with measuring tube left end left and right;
Described vortex generation post 2 is fixed in the tube chamber of sleeve pipe 2, and the two ends of vortex generation post 2 embed respectively the tube wall of sleeve pipe.
In the embodiment of the present invention, between the left side of the right pipeline section 12 of the right side of described sleeve pipe 2 and measuring tube, be equipped with at least one regulating ring (not shown), the internal-and external diameter of described regulating ring is consistent with sleeve pipe and coaxial with sleeve pipe, dock with the left side of the right pipeline section of measuring tube by regulating ring the right side of sleeve pipe, regulating ring can change probe induction vortex signal frequency and amplitude, in this regulating ring, optimize the signal to noise ratio (S/N ratio) of adjust flux, thereby improve the measurement of flowmeter.
In the embodiment of the present invention, described vortex generation post 2 is fixed on the tube chamber right-hand member of sleeve pipe 2.
The method for making of the swirl flowmeter of the embodiment of the present invention, is characterized in that, concrete steps are as follows:
1) according to the design bore of flowmeter, separately make measuring tube, sleeve pipe, and at least one regulating ring;
Wherein, the internal diameter of the right pipeline section of measuring tube and the internal diameter of sleeve pipe, all consistent with the design bore of flowmeter, the internal diameter interference fit of the external diameter of sleeve pipe and the left pipeline section of measuring tube;
2) vortex generation post is embedded in sleeve pipe, and by the tube wall firm welding of the two ends of vortex generation post and sleeve pipe;
3) first utilize frock each regulating ring to be inserted in the left pipeline section of measuring tube, recycling frock is inserted sleeve pipe in the left pipeline section of measuring tube, and the right side of sleeve pipe is docked with the left side of the right pipeline section of measuring tube by regulating ring;
4) sleeve pipe left end and measuring tube left end end face are welded and fixed;
5) on measuring tube, load onto flow sensing probe.
Claims (4)
1. a swirl flowmeter, comprises measuring tube, vortex generation post, and described measuring tube is the body of a left and right both ends open, and flow sensing probe is housed on measuring tube, it is characterized in that:
Described measuring tube is divided into the first from left right side totally two pipeline sections, and the internal diameter of left pipeline section is wherein greater than the internal diameter of right pipeline section, and coaxial sleeve is equipped with the sleeve pipe of a left and right both ends open in left pipeline section;
The left pipeline section interference fit of described sleeve pipe and measuring tube, dock with the left side of the right pipeline section of measuring tube the right side of sleeve pipe, and the internal diameter of sleeve pipe is consistent with the internal diameter of the right pipeline section of measuring tube, and the left end of sleeve pipe aligns with measuring tube left end left and right;
Described vortex generation post is fixed in the tube chamber of sleeve pipe, and the two ends of vortex generation post embed respectively the tube wall of sleeve pipe.
2. swirl flowmeter according to claim 1, it is characterized in that: between the right side of described sleeve pipe and the left side of the right pipeline section of measuring tube, be equipped with at least one regulating ring, the internal-and external diameter of described regulating ring is consistent with sleeve pipe and coaxial with sleeve pipe, and dock with the left side of the right pipeline section of measuring tube by regulating ring the right side of sleeve pipe.
3. swirl flowmeter according to claim 1, is characterized in that: described vortex generation post is fixed on the tube chamber right-hand member of sleeve pipe.
4. the method for making of swirl flowmeter according to claim 2, is characterized in that, concrete steps are as follows:
1) according to the design bore of flowmeter, separately make measuring tube, sleeve pipe, and at least one regulating ring;
Wherein, the internal diameter of the right pipeline section of measuring tube and the internal diameter of sleeve pipe, all consistent with the design bore of flowmeter, the internal diameter interference fit of the external diameter of sleeve pipe and the left pipeline section of measuring tube;
2) vortex generation post is embedded in sleeve pipe, and by the tube wall firm welding of the two ends of vortex generation post and sleeve pipe;
3) first utilize frock each regulating ring to be inserted in the left pipeline section of measuring tube, recycling frock is inserted sleeve pipe in the left pipeline section of measuring tube, and the right side of sleeve pipe is docked with the left side of the right pipeline section of measuring tube by regulating ring;
4) sleeve pipe left end and measuring tube left end end face are welded and fixed;
5) on measuring tube, load onto flow sensing probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672935.XA CN103759770B (en) | 2013-12-12 | 2013-12-12 | Swirl flowmeter and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310672935.XA CN103759770B (en) | 2013-12-12 | 2013-12-12 | Swirl flowmeter and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103759770A true CN103759770A (en) | 2014-04-30 |
| CN103759770B CN103759770B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310672935.XA Active CN103759770B (en) | 2013-12-12 | 2013-12-12 | Swirl flowmeter and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624182Y (en) * | 2003-04-28 | 2004-07-07 | 张川潮 | Intelligent vortex street flow gauge |
| CN2795819Y (en) * | 2005-05-20 | 2006-07-12 | 吕海东 | Vortex precession flow sensor |
| DE202006020144U1 (en) * | 2006-04-05 | 2007-11-08 | Abb Patent Gmbh | Vortex flowmeter with special sensor means to determine the flow rate |
| CN201503279U (en) * | 2009-07-14 | 2010-06-09 | 重庆嘉渝仪表有限公司 | Necking vortex street flow transmitter |
| CN203719700U (en) * | 2013-12-12 | 2014-07-16 | 上海肯特仪表股份有限公司 | Vortex flowmeter |
-
2013
- 2013-12-12 CN CN201310672935.XA patent/CN103759770B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624182Y (en) * | 2003-04-28 | 2004-07-07 | 张川潮 | Intelligent vortex street flow gauge |
| CN2795819Y (en) * | 2005-05-20 | 2006-07-12 | 吕海东 | Vortex precession flow sensor |
| DE202006020144U1 (en) * | 2006-04-05 | 2007-11-08 | Abb Patent Gmbh | Vortex flowmeter with special sensor means to determine the flow rate |
| CN201503279U (en) * | 2009-07-14 | 2010-06-09 | 重庆嘉渝仪表有限公司 | Necking vortex street flow transmitter |
| CN203719700U (en) * | 2013-12-12 | 2014-07-16 | 上海肯特仪表股份有限公司 | Vortex flowmeter |
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| CN103759770B (en) | 2017-12-22 |
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