CN210570866U

CN210570866U - U-shaped mass flow meter

Info

Publication number: CN210570866U
Application number: CN201921777983.4U
Authority: CN
Inventors: 范泽; 余奎; 吕鹏; 倪江
Original assignee: Shanghai Yinuo Instrument Co Ltd
Current assignee: Shanghai Yinuo Instrument Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-05-19
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to a mass flow meter technical field discloses a U type mass flow meter. Wherein U type mass flowmeter includes: the shell is provided with a mounting cavity; the number of the flow tubes is at least two, and the at least two flow tubes are arranged in the installation cavity in parallel and are U-shaped flow tubes; an inflation fitting mounted on the housing; the flow divider comprises a first flow divider and a second flow divider, and the first flow divider and the second flow divider are respectively arranged at two ends of the flow tube; one end of the supporting tube is communicated with the first shunt, and the other end of the supporting tube is communicated with the second shunt; the transmitter assembly is arranged in the middle of the supporting tube; and the electromagnetic detection assembly is positioned in the mounting cavity and is arranged on the outer side of the flow tube. The utility model discloses a U type mass flow meter compact structure, the inflation joint of design on the shell can fill gas into the installation cavity, makes the installation cavity keep at dry state, has reduced the humidity in the installation cavity, has prolonged magnetoelectricity determine module's life.

Description

U-shaped mass flow meter

Technical Field

The utility model relates to a mass flow meter technical field especially relates to a U type mass flow meter.

Background

When measuring the mass flow of a medium, the prior art generally adopts the mass flow to measure, in addition, the mass flow meter can also measure the density of the medium and indirectly measure the temperature of the medium, and meanwhile, the mass flow meter also has the advantages of flexible configuration, powerful function and high cost performance, so that the mass flow meter is widely applied. However, the existing mass flow meter has large humidity inside the mass flow meter due to the fact that the mass flow of liquid is measured frequently, so that an electromagnetic detection assembly of the mass flow meter is damaged frequently, and the service life of the mass flow meter is shortened.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a U type mass flow meter has solved that prior art exists because mass flow meter's inside humidity is great for mass flow meter's electromagnetic detection subassembly often takes place to damage, causes mass flow meter's the problem that life subtracts the weak point.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a U-shaped mass flow meter comprising: the device comprises a shell, a connecting piece and a connecting piece, wherein a mounting cavity is arranged on the shell; the number of the flow tubes is at least two, and the at least two flow tubes are arranged in the installation cavity in parallel and are all U-shaped flow tubes; an inflation fitting mounted on the housing and configured to inflate gas into the mounting cavity; the flow divider comprises a first flow divider and a second flow divider, and the first flow divider and the second flow divider are respectively arranged at two ends of the flow tube; one end of the supporting pipe is communicated with the first shunt, and the other end of the supporting pipe is communicated with the second shunt; the transmitter assembly is arranged in the middle of the supporting tube; and the electromagnetic detection assembly is positioned in the mounting cavity and is arranged on the outer side of the flow tube.

As a preferred scheme of the U-shaped mass flowmeter, each flow tube includes a first straight tube section, a first arc section, a second straight tube section, a second arc section, and a third straight tube section, which are connected in sequence, the first straight tube section and the third straight tube section are parallel, the second straight tube section is perpendicular to the first straight tube section and the third straight tube section, and the flow tube is axisymmetric with respect to a vertical direction.

As a preferred scheme of the U-shaped mass flowmeter, the electromagnetic detection assembly comprises a vibration exciter, the vibration exciter is arranged on the outer side of the second straight pipe section, and a coil and magnetic steel of the vibration exciter are respectively arranged on different flow tubes.

As a preferred scheme of the U-shaped mass flowmeter, the electromagnetic detection assembly further comprises a first detector and a second detector, the first detector and the second detector are respectively arranged on two sides of the vibration exciter, a coil and magnetic steel of the first detector are respectively arranged on different flow tubes, and a coil and magnetic steel of the second detector are respectively arranged on different flow tubes.

As a preferable scheme of the U-shaped mass flow meter, the first detector is disposed on a lower portion of the first straight pipe section or the first circular arc section, and the second detector is disposed on a lower portion of the third straight pipe section or the second circular arc section.

As a preferable scheme of the U-shaped mass flow meter, the U-shaped mass flow meter further includes two distance plates, the two distance plates are respectively disposed on the first straight pipe section and the third straight pipe section, each distance plate is provided with at least two through holes, and the at least two flow tubes penetrate through the through holes.

As a preferable embodiment of the U-shaped mass flow meter, the gas is nitrogen.

As a preferred scheme of the U-shaped mass flowmeter, the transmitter assembly comprises a connecting pipe and a transmitter, one end of the connecting pipe is fixedly connected to the middle of the supporting pipe, and the other end of the connecting pipe is connected with the transmitter.

As a preferable scheme of the U-shaped mass flowmeter, the shell is a U-shaped hexagonal tube, and the flow tube is a U-shaped flow tube.

The utility model has the advantages that: the utility model discloses a U type mass flow meter compact structure, the inflation joint of design on the shell can fill gas into the installation cavity, makes the installation cavity keep at dry state, has reduced the humidity in the installation cavity, has prolonged magnetoelectric detection subassembly's life, installs the changer subassembly at stay tube middle part and has increased U type mass flow meter's aesthetic property and compactedness, makes U type mass flow meter more stable simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic diagram of a U-shaped mass flow meter according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a U-shaped mass flow meter with a casing removed according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a U-shaped mass flowmeter according to an embodiment of the present invention.

In the figure:

11. a housing; 12. an inflation joint;

2. a flow tube; 21. a first straight pipe section; 22. a first arc segment; 23. a second straight tube section; 24. a second arc segment; 25. a third straight tube section;

3. a flow divider; 31. a first splitter; 32. a second flow splitter;

41. supporting a tube; 42. a transducer assembly; 421. a connecting pipe; 422. a transmitter;

5. a distance plate.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a U-shaped mass flowmeter, as shown in fig. 1 to 3, the U-shaped mass flowmeter includes a casing 11, two flow tubes 2, an inflation joint 12, a flow divider 3, a support tube 41, a transmitter assembly 42, and an electromagnetic detection assembly (not shown in the figure), the casing 11 is provided with two installation cavities, the two flow tubes 2 are arranged in parallel in the installation cavities and are both U-shaped flow tubes, and two ends of the two flow tubes 2 are flush. Of course, in other embodiments of the present invention, the number of flow tubes 2 is not limited to two in this embodiment, and may be more than two, and the number of flow tubes 2 is specifically set according to actual detection requirements. The gas charging connector 12 is mounted on the housing 11 and configured to charge gas into the mounting cavity, the flow divider 3 includes a first flow divider 31 and a second flow divider 32, the first flow divider 31 and the second flow divider 32 are respectively disposed at two ends of the two flow tubes 2, one end of the support tube 41 is communicated with the first flow divider 31, the other end is communicated with the second flow divider 32, the first flow divider 31 is provided with an inlet and two outlets, one inlet is communicated with the support tube 41, and the two outlets are respectively communicated with the inlets of the two flow tubes 2. The second flow divider 32 is provided with two inlets and one outlet, as shown in fig. 3, the two inlets are respectively communicated with the outlets of the two flow tubes 2, and the one outlet is communicated with the support tube 41. A transducer assembly 42 is provided in the middle of the support tube 41 and an electromagnetic sensing assembly is located in the mounting chamber and outside the flow tube 2.

Specifically, the gas that lets in the installation cavity of this embodiment is dry nitrogen gas, and nitrogen gas can prevent that the electromagnetic detection subassembly from because being oxidized in the great environment of humidity for the electromagnetic detection subassembly is in comparatively dry installation cavity always. Of course, in other embodiments of the present invention, the gas may be other dry gases, such as dry inert gas, which is selected according to actual needs.

Further, the transmitter assembly 42 of the present embodiment includes a connecting pipe 421 and a transmitter 422, one end of the connecting pipe 421 is fixedly connected to the middle of the supporting pipe 41, the other end of the connecting pipe is connected to the transmitter 422, the lower end of the transmitter 422 is connected to an aviation plug (not shown in the figure), the aviation plug is located in the connecting pipe 421, and the aviation plug is fastened to the transmitter 422 through an outer hexagon screw.

The U type mass flow meter that this embodiment provided compact structure, the gas charging connector 12 of design on the shell can fill gas into the installation cavity, makes the installation cavity keep in dry state, has reduced the humidity in the installation cavity, has prolonged magnetoelectric detection subassembly's life, installs changer subassembly 42 in the middle part of stay tube 41 and has increased U type mass flow meter's aesthetic property and compactedness, makes U type mass flow meter more stable simultaneously.

Specifically, as shown in fig. 2, each flow tube 2 of the present embodiment includes a first straight tube section 21, a first circular arc section 22, a second straight tube section 23, a second circular arc section 24, and a third straight tube section 25, which are connected in sequence, and the first straight tube section 21, the first circular arc section 22, the second straight tube section 23, the second circular arc section 24, and the third straight tube section 25 are welded in sequence to form the flow tube 2, wherein the first straight tube section 21 and the third straight tube section 25 are parallel, the second straight tube section 23 is perpendicular to the first straight tube section 21 and the third straight tube section 25 at the same time, and the flow tube 2 is axially symmetric with respect to the vertical direction.

Further, corresponding to the U-shaped flow tube, as shown in fig. 1, the case 11 of the present embodiment is a U-shaped hexagonal tube, and the U-shaped hexagonal tube is formed by a folded plate process, so that the U-shaped hexagonal tube not only can ensure the matching between the U-shaped hexagonal tube and the flow divider 3, but also can increase the rigidity of the U-shaped mass flow meter, and avoid the resonance phenomenon between the U-shaped hexagonal tube and the flow tube 2, thereby ensuring the metering accuracy and stability of the U-shaped mass flow meter, and ensuring the accuracy of measurement.

As shown in fig. 1 and 2, in order to connect the flow divider 3 with the U-shaped hexagonal tube in a sealing manner, a hexagonal disc is provided on the outer periphery of the flow divider 3 of the present embodiment, the hexagonal disc being provided corresponding to the U-shaped hexagonal tube, and the hexagonal disc can be connected with the U-shaped hexagonal tube in a sealing manner to increase the sealing performance of the installation cavity. Of course, if the housing 11 of the present embodiment is an octagonal tube or other structure, in order to ensure the sealing performance between the flow divider 3 and the housing 11, a sealing structure corresponding to the housing 11 is provided on the outer periphery of the flow divider 3 to increase the sealing performance of the installation cavity.

The electromagnetic detection assembly of this embodiment includes vibration exciter, first detector and second detector, and vibration exciter, first detector and second detector are connected with changer 422 electricity respectively, and wherein, vibration exciter fixed connection is in the outside of second straight tube section 23, and the coil and the magnet steel of vibration exciter are located respectively on two flowtubes 2. The first detector and the second detector are respectively positioned at two sides of the vibration exciter, namely the first detector and the second detector are respectively fixedly connected at the upstream and the downstream of the vibration exciter. Specifically, the first detector is located at the lower part of the first straight pipe section 21, the second detector is located at the lower part of the third straight pipe section 25, the coil and the magnetic steel of the first detector are respectively arranged on the two flow pipes 2, and the coil and the magnetic steel of the second detector are respectively arranged on the two flow pipes 2. Of course, in other embodiments of the present invention, the first detector is not limited to the case of the embodiment located at the lower portion of the first straight pipe section 21, and the second detector is also not limited to the case of the embodiment located at the lower portion of the third straight pipe section 25, the first detector may also be located on the first circular arc section 22, and the second detector may also be located on the second circular arc section 24, that is, in other embodiments, the first detector may be located at the lower portion of the first straight pipe section 21 or at the first circular arc section 22, and the second detector may be located at the lower portion of the third straight pipe section 25 or at the second circular arc section 24, and is specifically set according to actual requirements.

The U-shaped mass flowmeter of the present embodiment further includes two distance plates 5, the two distance plates 5 are perpendicular to the first straight pipe section 21, as shown in fig. 2 and 3, the distance plates 5 are disposed on the first straight pipe section 21 and the third straight pipe section 25, the distance plates 5 are provided with two through holes for the two flow tubes 2 to pass through respectively, and the two flow tubes 2 pass through the through holes of the distance plates 5. Each spacer plate 5 is used to hold two parallel flow tubes 2 in place. For example, the distance plates 5 can be simultaneously attached to both flow tubes 2 by vacuum brazing. This arrangement does not cause deformation of flow tubes 2 so that the properties of both flow tubes 2 are identical. At the same time, the change in the position of the distance plates 5 in the first straight tube section 21 and the third straight tube section 25 will change the resonance frequency of the U-shaped mass flowmeter when providing the limited twisting and bending required for flow measurement, and the specific position of the distance plates 5 in the upper part of the first straight tube section 21 and the third straight tube section 25 can be determined according to the designed resonance frequency.

In the utility model discloses an in other embodiments, in order to reduce the vibration coupling of flow tube 2 for flow tube 2's interference immunity is strong, further, can also be equipped with a plurality of distance plates 5, and a plurality of distance plates 5 averagely divide into two sets ofly, and the longitudinal distance of every adjacent two distance plates 5 of group generally establishes to 20mm-40 mm. Of course, in other embodiments, the longitudinal distance between each set of two adjacent distance plates 5 is not limited to 20mm-40mm, and the longitudinal distance between two adjacent distance plates 5 can also be selected according to actual needs.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A U-shaped mass flow meter, comprising:

the device comprises a shell (11), wherein an installation cavity is arranged on the shell (11);

the number of the flow tubes (2) is at least two, and the at least two flow tubes (2) are arranged in the mounting cavity in parallel;

an inflation fitting (12), the inflation fitting (12) being mounted on the housing (11) and configured to inflate gas into the mounting cavity;

the flow divider (3) comprises a first flow divider (31) and a second flow divider (32), and the first flow divider (31) and the second flow divider (32) are respectively arranged at two ends of the flow pipe (2);

a support pipe (41), one end of the support pipe (41) is communicated with the first flow divider (31), and the other end is communicated with the second flow divider (32);

the transmitter assembly (42), the transmitter assembly (42) is arranged in the middle of the supporting pipe (41);

and the electromagnetic detection assembly is positioned in the mounting cavity and is arranged on the outer side of the flow tube (2).

2. A U-shaped mass flowmeter according to claim 1, wherein each of said flow tubes (2) comprises a first straight tube section (21), a first circular arc section (22), a second straight tube section (23), a second circular arc section (24) and a third straight tube section (25) connected in series, said first straight tube section (21) and said third straight tube section (25) being parallel and said second straight tube section (23) being perpendicular to both said first straight tube section (21) and said third straight tube section (25), said flow tubes (2) being axisymmetric with respect to a vertical direction.

3. A U-shaped mass flowmeter according to claim 2, wherein said electromagnetic detection assembly comprises an exciter arranged outside said second straight tube section (23), the coil and the magnetic steel of said exciter being arranged on different ones of said flow tubes (2).

4. A U-shaped mass flowmeter according to claim 3, wherein said electromagnetic detection assembly further comprises a first detector and a second detector, said first detector and said second detector are respectively disposed on both sides of said vibration exciter, said first detector has its coil and magnetic steel respectively disposed on different ones of said flow tubes (2), and said second detector has its coil and magnetic steel respectively disposed on different ones of said flow tubes (2).

5. A U-shaped mass flow meter according to claim 4, characterized in that the first detector is provided on the lower part of the first straight pipe section (21) or on the first circular arc section (22), and the second detector is provided on the lower part of the third straight pipe section (25) or on the second circular arc section (24).

6. A U-shaped mass flowmeter according to claim 2, further comprising two distance plates (5), wherein the two distance plates (5) are respectively arranged on the first straight pipe section (21) and the third straight pipe section (25), and wherein each distance plate (5) is provided with at least two through holes through which at least two flow tubes (2) pass.

7. A U-shaped mass flow meter according to any of claims 1 to 6, characterized in that the gas is nitrogen.

8. U-shaped mass flowmeter according to any of claims 1 to 6, characterized in that said transmitter assembly (42) comprises a connecting tube (421) and a transmitter (422), said connecting tube (421) having one end fixedly connected to the middle of said support tube (41) and the other end connected to said transmitter (422).

9. U-shaped mass flowmeter according to any of claims 1 to 6, characterized in that said case (11) is a U-shaped hexagonal tube and said flow tubes (2) are U-shaped flow tubes.