CN210375257U - U-shaped Coriolis mass flowmeter and flow divider thereof - Google Patents
U-shaped Coriolis mass flowmeter and flow divider thereof Download PDFInfo
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- CN210375257U CN210375257U CN201921451554.8U CN201921451554U CN210375257U CN 210375257 U CN210375257 U CN 210375257U CN 201921451554 U CN201921451554 U CN 201921451554U CN 210375257 U CN210375257 U CN 210375257U
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Abstract
The utility model discloses a U type Coriolis mass flowmeter's branch fluid, it is including the straight tube section that connects gradually, reposition of redundant personnel section and branch pipe section, the port of straight tube section is the medium entry end, be formed with the reposition of redundant personnel curved surface on the inner wall of reposition of redundant personnel section, the inner chamber that the reposition of redundant personnel section will be shunted to the reposition of redundant personnel curved surface equally divides into two reposition of redundant personnel passageways, two reposition of redundant personnel passageways cross and form the reposition of redundant personnel curve, the reposition of redundant personnel curve is located the central symmetry plane of reposition of redundant personnel section, and the reposition of redundant personnel curve is tangent and slick and sly transitional coupling with the straight tube. Through the structural design of the split fluid, the split effect of the split fluid is optimized, the structural strength of the split fluid is increased, and the split effect of the split fluid is improved, so that the requirements on multiple aspects such as uniform split, stable flow state and guaranteed structural strength are met, and the using effect of the whole mass flow meter is improved. The utility model also discloses a U type Coriolis mass flow meter, including above-mentioned flow distribution body, survey buret, stay tube and shell.
Description
Technical Field
The utility model relates to a measure technical field, especially relate to a U type Coriolis mass flow meter's reposition of redundant personnel and U type Coriolis mass flow meter.
Background
The mass flow measurement technology is the key point of the development of the current national science and technology in the field of medium fluid process control, and in order to realize the measurement of various media under the complex environmental conditions with high accuracy and high reliability, the Coriolis mass flowmeter becomes a novel measuring instrument of the key development of the field with the superior performance.
The Coriolis mass flowmeter sensor is a novel intelligent instrument for measuring the mass, density, temperature and other parameters of fluid flowing through a pipeline based on the Coriolis effect. Specifically, when a medium fluid flows through the flow divider at a certain speed, the medium vibrates synchronously (simple harmonic vibration or circular motion) with the flow divider on one hand, and continues to pass through the pipeline at the speed on the other hand, at the moment, the medium generates a reaction force perpendicular to the flowing direction of the medium, namely 'coriolis force', under the action of the coriolis force, the synchronous vibration at the symmetrical position of the measuring tube is converted into asynchronous vibration, the asynchronous vibration is a phase difference in the waveform of a vibration signal, the value of the phase difference is in direct proportion to the mass flow rate of the medium, and the mass flow rate of the medium can be obtained by calculating the phase difference of the signal through a detection circuit.
The coriolis mass flowmeter is widely popularized and applied in the market because the coriolis mass flowmeter can directly measure the mass flow without considering the working condition, and the coriolis mass flowmeter is required to have higher accuracy and repeatability so as to meet increasingly severe measuring environments and field applications. How to improve the accuracy and repeatability of the conventional coriolis mass flowmeter is a topic worthy of study.
The measuring accuracy of the Coriolis mass flowmeter is influenced by a plurality of factors, and an internal component taking the shunt body and the shunt body as cores makes vibration motion, which is a core component part of flow measurement and is also a part most easily interfered by the outside; the external member taking the supporting tube and the shell as the core plays the roles of strength support, vibration attenuation, isolation and the like, and once the external member deforms in strength, the measuring tube directly deforms to generate a measuring error, so that the measuring precision of the Coriolis sensor is greatly reduced.
Therefore, factors such as the design of the flow splitting body, the flow splitting effect, the structural strength and the like are very important factors influencing the metering precision and the metering repeatability of the flow splitting body.
SUMMERY OF THE UTILITY MODEL
Based on it, an object of the utility model is to provide a U type Coriolis mass flow meter's reposition of redundant personnel optimizes its structure of design, promotes the reposition of redundant personnel effect, realizes multiple efficiency such as even reposition of redundant personnel, steady flow state, assurance structural strength, and then promotes the result of use of whole sensor.
Another object of the utility model is to provide a U type coriolis mass flowmeter, through to overall structure optimal design, the steady flow state improves the measurement effect to satisfy high accuracy, high repeatability's measurement requirement.
In order to achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a U type Coriolis mass flowmeter's split stream body, this split stream body an organic whole is pour and is formed, it is including the straight tube section that connects gradually, reposition of redundant personnel section and branch pipe section, the port of straight tube section is the medium entry end, be formed with the reposition of redundant personnel curved surface on the inner wall of reposition of redundant personnel section, the inner chamber that the reposition of redundant personnel section will be equallyd divide into two reposition of redundant personnel passageways to the reposition of redundant personnel curved surface, two reposition of redundant personnel passageways intersect and form the reposition of redundant personnel curve, the reposition of redundant personnel curve is located the central symmetry plane of reposition of redundant personnel section, and the reposition of redundant personnel curve.
Wherein, the straight tube section is arranged perpendicularly with the branch pipe section, is provided with connecting portion on the outer wall of reposition of redundant personnel section.
Wherein, be provided with the supporting disk on the outer wall of branch pipe.
Wherein, all be provided with the strengthening rib between supporting disk and the connecting portion, between supporting disk and the medium entry end.
Wherein, the cross section of the supporting disk is a regular polygon.
The utility model provides a U type Coriolis mass flow meter, it includes foretell U type Coriolis mass flow meter's branch flow body, survey buret and shell, two survey burets are the same U type structure and parallel arrangement, the both ends of surveying the buret correspond the intercommunication with two branch pipes that divide the flow body, be provided with the driver part who is used for producing the resonance on surveying the U type interlude of buret, be provided with the detection part who is used for gathering vibration signal on surveying the U type side section of buret, the shell will survey buret cover and establish wherein, the both ends of shell respectively with two support disks that divide the flow body link firmly.
Wherein, still include the stay tube, the connecting portion of two reposition of redundant personnel are fixed in the both ends of stay tube respectively.
The gap between the shell and the measuring pipe is a wiring channel, the supporting pipe is hollow, a wire passing pipe for connecting inner cavities of the supporting pipe and the shell is arranged between the supporting pipe and the shell, and a wire passing port is further formed in the supporting pipe.
Wherein, the ends of the two measuring pipes are provided with damping plates for fixing the center distance between the two measuring pipes.
Wherein, the outer wall of the measuring pipe is provided with a temperature sensor.
To sum up, the beneficial effects of the utility model are that, compared with the prior art, U type Coriolis mass flowmeter's reposition of redundant personnel and U type Coriolis mass flowmeter mainly through the structural design to the reposition of redundant personnel, optimize its reposition of redundant personnel effect, increase its structural strength etc., promote the reposition of redundant personnel's reposition of redundant personnel effect, thereby reach many-sided requirements such as even reposition of redundant personnel, stable flow state, guarantee structural strength, and then promote whole mass flowmeter's result of use, in addition, cooperation U type surveys parts such as pipe, stay tube and shell, fully guarantee stable in structure, avoid surveying the impaired influence measuring result of pipe, and improved measurement sensitivity, accuracy and zero point stability, thereby improved the measurement effect, high accuracy, high repeatability's measurement requirement has been reached.
Drawings
Fig. 1 is a first cross-sectional view of a flow splitter of a U-shaped coriolis mass flowmeter according to an embodiment of the present invention;
fig. 2 is a second cross-sectional view of a flow splitter of a U-shaped coriolis mass flowmeter according to an embodiment of the present invention;
fig. 3 is a bottom view of a flow splitter of a U-shaped coriolis mass flowmeter provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a U-shaped coriolis mass flowmeter according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 3, the present embodiment provides a flow divider of a U-shaped coriolis mass flowmeter, in which the flow divider 100 is integrally cast by a precision steel casting method using a special mold, and includes a straight pipe section 110, a flow dividing section 120, and a branch pipe section 130, which are sequentially connected.
The port of the straight pipe section 110 is a medium inlet end 111, and the straight pipe section 110 is a section of cylindrical channel, which has a rectifying effect on the medium fluid 500 to optimize the medium flow state.
A shunting curved surface 121 is formed on the inner wall of the shunting section 120, the shunting curved surface 121 equally divides the inner cavity of the shunting section 120 into two shunting passages, wherein the two shunting passages are intersected to form a shunting curve 122, the shunting curve 122 is located on the central symmetry plane of the shunting section 120, and the shunting curve 122 is tangent to the straight pipe section 110 and is in smooth transition connection. The diversion curve 122 is a core factor in the whole diversion design, the position of the diversion curve is located on the axis of the diversion body 100 and is also a symmetrical line of the two branch pipes 131, and the circular arc design of the diversion curve 122 maximally realizes the effect of dividing the medium fluid 500 into two parts.
The branch pipe section 130 includes two branch pipes 131, and the branch pipes 131 are connected to the branch passage in a one-to-one correspondence, whereby the split center line is uniformly distributed to the two branch pipes 131, and the entire process is similar to an inverted Y-shaped structure.
Particularly, the straight pipe section 110 and the branch pipe section 130 are arranged vertically, and for the corner structure, the diversion curved surface 121 is a surface directly contacting the medium fluid 500, so that a transition arc design is adopted, and a large cavity is formed between the diversion curved surface 121 and the medium inlet end 111, so that a buffer area is constructed, and the medium fluid 500 is smoothly diverted and rapidly circulated.
The outer wall of the shunt segment 120 is provided with a connection part 123 for installing the shunt body 100, and particularly, the medium inlet end 111 and the connection part 123 are arranged coaxially, so that the structural performance is improved.
The outer wall of the branch pipe 131 is provided with a supporting plate 132, the cross section of the supporting plate 132 is preferably a regular polygon, the embodiment is illustrated by a regular octagon, the supporting plate has a certain thickness, a butt welding platform extends outwards at a certain angle, and the design of the regular polygon plate surface ensures the strength of the whole machine and simultaneously improves the attractiveness and identification degree of the product.
Reinforcing ribs 133 are arranged between the supporting disc 132 and the connecting portion 123 and between the supporting disc 132 and the medium inlet end 111, and the reinforcing ribs 133 at two positions are trapezoidal block structures with certain thicknesses and play roles in supporting and reinforcing. The reinforcing ribs 133 can also be produced by integral casting.
On the basis, referring to fig. 4, the present embodiment further provides a U-shaped coriolis mass flowmeter, which includes the flow divider 100, the measurement pipe 200, the support pipe 300, and the housing 400.
The straight pipe section 110 of the splitter 100 is fixedly connected with the connecting flange by welding.
The two sub-fluids 100 are arranged back to back, and the connecting portions 123 thereof are respectively fixed to both ends of the support tube 300. The support tube 300 is a cylindrical tube with rabbets at two ends, and is assembled and connected with the shunt body 100 in a welding manner, and butt welding rabbets are arranged on welding parts of the support tube and the shunt body, so that assembly is facilitated.
The two measuring tubes 200 are in the same U-shaped structure and are arranged in parallel, the branch tubes 131 of the two shunt bodies 100 are cylindrical cavity pipelines with spigot designs, and the spigots of the branch tubes are connected with the measuring tubes 200 and fixed by argon arc welding, so that the sealing property is ensured. The U-shaped middle section 210 and the U-shaped side sections 220 on the two sides are in transitional connection in a circular arc tangent mode, and the optimal vibration form is found through the optimized design of the structure and the size of the measuring pipe 200, so that the purpose of high-precision measurement is achieved.
The U-shaped middle section 210 of the measuring tube 200 is provided with a drive member 230 for generating resonance, and the U-shaped side section 220 of the measuring tube 200 is provided with a detection member 240 for detecting vibration signals.
The ends of the two measuring tubes 200 are provided with a damping plate 250, which damping plate 250 is a rectangular stainless steel plate perforated in the middle for fixing the two measuring tubes 200. The two ends of the measuring tube 200 are respectively provided with two damping plates 250, and the center distance of the two measuring tubes 200 is ensured to be consistent through the fixation of the damping plates 250, so that the symmetry and the parallelism of the two measuring tubes are ensured.
A temperature sensor 260 is arranged on the outer wall of the measuring tube 200 for measuring the temperature of the medium fluid 500 in the measuring tube 200.
The measuring tube 200 is covered by a housing 400, and both ends of the housing 400 are respectively fixedly connected with the supporting discs 132 of the two branch fluids 100. The housing 400 is a casing structure having a cross section of a regular polygon, and is formed to conform to the shape of the support plate 132, and is connected to the support plate 132 by welding.
The gap between the casing 400 and the measuring tube 200 is a wiring channel 410, the supporting tube 300 is hollow, a wiring tube 420 connecting the inner cavities of the supporting tube 300 and the casing 400 is arranged between the supporting tube 300 and the casing 400, and a wiring port 310 is further arranged on the supporting tube 300. The detection component 240, the driving component 230, and the temperature sensor 260 are routed from the wire channel 410, through the wire conduit 420, the support tube 300, and finally out of the wire port 310.
When the U-shaped coriolis mass flowmeter is in operation, a medium fluid 500 enters the flow splitting body 100 from the medium inlet end 111 after passing through the connecting flange, and is split into two branch pipes 131 and then enters the two measuring pipes 200, the measuring pipes 200 generate resonance under the action of the driving component 230, according to the coriolis effect, the measuring pipes 200 at the moment receive a reaction force from the medium fluid 500, i.e., coriolis force, so that the vibrations of the measuring pipes 200 at symmetrical positions are asynchronous, which means that the vibrations of the measuring pipes 200 at the symmetrical positions are time difference, i.e., phase difference, and the value of the phase difference is proportional to the mass flow of the medium, and the mass flow of the medium fluid 500 can be obtained by collecting vibration signals through the detecting component 240 and adopting a digital.
To sum up, foretell U type Coriolis mass flowmeter's reposition of redundant personnel and U type Coriolis mass flowmeter are mainly through the structural design to the reposition of redundant personnel, optimize its reposition of redundant personnel effect, increase its structural strength etc., promote the reposition of redundant personnel effect, thereby reach even reposition of redundant personnel, stable flow state, guarantee many-sided requirements such as structural strength, and then promote whole mass flowmeter's result of use, in addition, cooperation U type surveys buret, parts such as stay tube and shell, fully guarantee stable in structure, avoid surveying the impaired influence measuring result of buret, and improved measuring sensitivity, accuracy nature and zero point stability, thereby the measurement effect has been improved, high accuracy has been reached, high repeatability's measurement requirement.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The flow divider of the U-shaped Coriolis mass flowmeter is characterized in that the flow divider (100) is cast integrally and comprises a straight pipe section (110), a flow dividing section (120) and a branch pipe section (130) which are connected in sequence,
the port of the straight pipe section (110) is a medium inlet end (111),
a shunting curved surface (121) is formed on the inner wall of the shunting section (120), the shunting curved surface (121) divides the inner cavity of the shunting section (120) into two shunting channels, the two shunting channels are intersected to form a shunting curve (122), the shunting curve (122) is positioned on the central symmetry plane of the shunting section (120), and the shunting curve (122) is tangent to the straight pipe section (110) and is in smooth transition connection,
the branch pipe section (130) comprises two branch pipes (131), and the branch pipes (131) are connected with the diversion channels in a one-to-one correspondence mode.
2. The flow splitter of a U-shaped coriolis mass flowmeter of claim 1, further comprising: the straight pipe section (110) and the branch pipe section (130) are vertically arranged, and the outer wall of the flow dividing section (120) is provided with a connecting part (123).
3. The flow splitter of a U-shaped coriolis mass flowmeter of claim 2, further characterized by: and a supporting disc (132) is arranged on the outer wall of the branch pipe (131).
4. The flow splitter of a U-shaped coriolis mass flowmeter of claim 3, further characterized by: reinforcing ribs (133) are arranged between the supporting disc (132) and the connecting portion (123) and between the supporting disc (132) and the medium inlet end (111).
5. The flow splitter of a U-shaped coriolis mass flowmeter of claim 3, further characterized by: the cross section of the supporting disc (132) is a regular polygon.
6. U-shaped Coriolis mass flow meter, comprising the flow dividing body (100), the measuring tube (200) and the housing (400) of the U-shaped Coriolis mass flow meter according to any one of claims 1 to 5,
the two measuring tubes (200) are of the same U-shaped structure and are arranged in parallel, the two ends of the measuring tubes (200) are correspondingly communicated with the two branch tubes (131) of the flow dividing body (100), a driving component (230) for generating resonance is arranged on the U-shaped middle section (210) of the measuring tubes (200), a detection component (240) for collecting vibration signals is arranged on the U-shaped side section (220) of the measuring tubes (200),
the shell (400) covers the measuring pipe (200) and is arranged in the measuring pipe, and two ends of the shell (400) are fixedly connected with the supporting discs (132) of the two flow dividing bodies (100) respectively.
7. The U-shaped coriolis mass flowmeter of claim 6 characterized in that: the flow distribution device further comprises a supporting pipe (300), and the connecting parts (123) of the two flow distribution bodies are respectively fixed at two ends of the supporting pipe (300).
8. The U-shaped coriolis mass flowmeter of claim 7 characterized in that: the utility model discloses a line passageway (410) is walked to casing (400) with clearance between survey buret (200), stay tube (300) cavity, stay tube (300) with be provided with between casing (400) and connect both inner chambers cross line pipe (420), still be provided with on stay tube (300) and walk line mouth (310).
9. The U-shaped coriolis mass flowmeter of claim 6 characterized in that: the ends of the two measuring tubes (200) are provided with damping plates (250) for fixing the center distance between the two.
10. The U-shaped coriolis mass flowmeter of claim 6 characterized in that: and a temperature sensor (260) is arranged on the outer wall of the measuring pipe (200).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921451554.8U CN210375257U (en) | 2019-09-02 | 2019-09-02 | U-shaped Coriolis mass flowmeter and flow divider thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921451554.8U CN210375257U (en) | 2019-09-02 | 2019-09-02 | U-shaped Coriolis mass flowmeter and flow divider thereof |
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| CN210375257U true CN210375257U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2019
- 2019-09-02 CN CN201921451554.8U patent/CN210375257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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