CN217605050U

CN217605050U - Electromagnetic vibration coil of miniature Coriolis mass flowmeter

Info

Publication number: CN217605050U
Application number: CN202221514552.0U
Authority: CN
Inventors: 孔庆胜; 程杰; 汪正
Original assignee: Anhui Tianwei Instrument Co ltd
Current assignee: Anhui Tianwei Instrument Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-10-18
Anticipated expiration: 2032-06-15

Abstract

The utility model relates to a coriolis mass flow meter technical field specifically is a miniature coriolis mass flow meter's electromagnetic type vibrating coil, the base is installed to the lower extreme of flowmeter main part, double detecting tube is installed to the lower extreme of base, and the lower extreme installation of base and the shell of double detecting tube adaptation, the shunt with double detecting tube intercommunication is installed at the both ends of base, coil assembly is all installed to the outside straight tube section of double detecting tube and the transition department of bend section. The utility model discloses simple structure, the operation is simplified, and it is convenient to use, low cost, coil pack overall structure is compact, and is small, can also can regard as the detection coil as vibration coil, adopts double-barrelled structure can reduce the sensitivity of external vibrations, realizes the measurement of phase difference easily.

Description

Electromagnetic vibration coil of miniature Coriolis mass flowmeter

Technical Field

The utility model relates to a Coriolis mass flow meter technical field specifically is a miniature Coriolis mass flow meter's electromagnetic type vibrating coil.

Background

The Coriolis mass flowmeter is a device for directly measuring mass flow by utilizing the Coriolis force principle that fluid generates direct proportion to the mass flow when flowing in a vibrating pipeline, and consists of a flow detection element and a converter.

The vibrating coil and the signal detecting coil of the mass flowmeter are important components for ensuring the normal operation of the mass flowmeter, and the coils in the prior art are usually large in size and cannot be used for driving and detecting the detecting tube at the same time, so that a person skilled in the art provides an electromagnetic vibrating coil of a miniature coriolis mass flowmeter to solve the problems in the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a miniature coriolis mass flowmeter's electromagnetic type vibrating coil to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the electromagnetic type vibration coil of the miniature Coriolis mass flowmeter comprises a flowmeter body, wherein a base is installed at the lower end of the flowmeter body, double rows of detection tubes are installed at the lower end of the base, a shell matched with the double rows of detection tubes is installed at the lower end of the base, flow dividers communicated with the double rows of detection tubes are installed at two ends of the base, and coil assemblies are installed at the transition positions of outer straight tube sections and outer bent sections of the double rows of detection tubes;

the coil pack includes that the symmetry installs the fixed pipe on double-row test tube, the bolt is all installed to the inside of fixed pipe, and the inside of one of them fixed pipe inlays and is equipped with the magnet seat, the permanent magnet is installed to the one end of magnet seat, one of them the coil seat is installed to the one end of bolt, be equipped with the coil main part with the permanent magnet adaptation on the coil seat.

As a further aspect of the present invention: the coil assembly has a total weight of less than 100g, a maximum diameter of 16mm and a length of 45mm.

As a further aspect of the present invention: the shunt comprises a main pipe embedded into the base and two branch pipes communicated with the double-row detection pipes, and a connecting flange is installed at the outer end of the main pipe.

As a further aspect of the present invention: two layers of vibration damping plates are welded at the positions, close to the upper end inlet and the upper end outlet, of the double-row detection pipes respectively.

As a further aspect of the present invention: the buckle is symmetrically installed at the upper end of the shell, and clamping grooves matched with the buckle are symmetrically formed in the two sides of the base.

As a further aspect of the present invention: the double-row detection tube is a workpiece with a U-shaped structure and is made of stainless steel.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, the operation is simplified, and it is convenient to use, low cost, coil pack overall structure is compact, and is small, can also can regard as the detection coil as vibration coil, adopts double-barrelled structure can reduce the sensitivity of external vibrations, realizes the measurement of phase difference easily.

Drawings

FIG. 1 is a schematic diagram of an electromagnetic vibrating coil of a miniature Coriolis mass flowmeter;

FIG. 2 is a side view of an electromagnetic vibrating coil of a micro Coriolis mass flowmeter;

FIG. 3 is a schematic diagram of the internal structure of an electromagnetic vibrating coil of a miniature Coriolis mass flowmeter;

fig. 4 is a schematic view of the mounting structure of a U-shaped tube in an electromagnetic vibrating coil of a micro coriolis mass flowmeter;

FIG. 5 is a schematic diagram of a shunt in an electromagnetic vibrating coil of a micro Coriolis mass flowmeter;

fig. 6 is a schematic diagram of a coil assembly in an electromagnetic vibrating coil of a micro coriolis mass flowmeter.

In the figure: 1. a flow meter body; 2. a housing; 3. a base; 4. a flow divider; 5. double rows of detection tubes; 6. a vibration damping plate; 7. a coil assembly; 71. a bolt; 72. fixing the tube; 73. a coil holder; 74. a magnet base; 75. a permanent magnet; 76. a coil body.

Detailed Description

Referring to fig. 1 to 6, in an embodiment of the present invention, an electromagnetic vibration coil of a micro coriolis mass flowmeter includes a flowmeter body 1, a base 3 is installed at a lower end of the flowmeter body 1, a double-row detection tube 5 is installed at a lower end of the base 3, a housing 2 adapted to the double-row detection tube 5 is installed at a lower end of the base 3, shunts 4 communicated with the double-row detection tube 5 are installed at two ends of the base 3, coil assemblies 7 are installed at transitions of outer straight tube sections and outer bent sections of the double-row detection tube 5, and the housing 2 is installed by a U-shaped tube design of the double-row detection tube 5, so that the electromagnetic vibration coil is easy to bend and form, and meanwhile, the electromagnetic vibration coil has a more compact structure, a reduced volume, and can reduce sensitivity of external vibration by using a double-tube structure, and easily achieve measurement of a phase difference, and in addition, the housing 2 is installed by a clamping between a clamping groove and a buckle, thereby reducing interference of an external environment and improving accuracy in detection;

the coil assembly 7 comprises fixed tubes 72 symmetrically installed on the double-row detection tube 5, bolts 71 are installed inside the fixed tubes 72, a magnet seat 74 is embedded inside one of the fixed tubes 72, a permanent magnet 75 is installed at one end of the magnet seat 74, a coil seat 73 is installed at one end of one of the bolts 71, a coil main body 76 matched with the permanent magnet 75 is arranged on the coil seat 73, the positions of the magnet seat 74 and the coil seat 73 are respectively fixed through the two bolts 71, when the coil assembly 7 is used as an electromagnetic vibration coil, after alternating current is introduced into the coil main body 76, an alternating magnetic field can be generated inside the coil main body 76, and the alternating magnetic field can generate repulsion and attraction on the permanent magnet 75, so that the double-row detection tube 5 is pushed or attracted to do reverse motion, the double-row detection tube 5 generates vibration, and the frequency of the introduced alternating current is controllable, so the vibration frequency of the double-row detection tube 5 can be controllable; when the coil assembly 7 is used as a magnetoelectric signal detection coil, the reverse motion of the double-row detection tube 5 allows the permanent magnet 75 to cut a magnetic induction line in the coil body 76, so that the coil body 76 generates induced electromotive force, and the coil assemblies 7 installed on the left and right sides of the double-row detection tube 5 simultaneously generate two paths of electric signals to measure the phase difference.

In fig. 6, the coil block 7 has a total weight of less than 100g, a maximum diameter of 16mm, a length of 45mm, and a small volume. The double-row detection tube 5 has light weight, reduces the influence on the double-row detection tube 5, improves the detection accuracy, and can be used as a vibration coil and a detection coil.

In fig. 3 and 5, the flow divider 4 comprises a main pipe embedded in the base 3 and two branch pipes communicated with the double-row detection pipe 5, which is beneficial to realizing flow division, so that the large-flow detection is realized, and the outer end of the main pipe is provided with a connecting flange which is convenient for externally connecting a pipeline.

In fig. 3 and 4, two vibration damping plates 6 are welded at positions of the double-row detection tube 5 near the upper end inlet and outlet respectively, so that the working environment of the double-row detection tube 5 is more stable, and the interference of external vibration is avoided.

In fig. 1 and 3, the upper end of the housing 2 is symmetrically provided with buckles, and the two sides of the base 3 are symmetrically provided with clamping grooves adapted to the buckles.

In fig. 3 and 4, the double row detection tube 5 is a U-shaped workpiece made of stainless steel.

The utility model discloses a theory of operation is: the utility model discloses simple structure, the operation is simplified, in the time of using, with flange and external pipe connection, through the design of "U" type pipe type of double-row detecting tube 5, the shaping of easily buckling, make the structure of this equipment compacter simultaneously, the volume reduces, adopt double-barrelled structure can reduce the sensitivity of external vibrations, the measurement of phase difference is realized easily, in addition, when coil pack 7 is used for electromagnetic vibration coil, after coil main part 76 lets in alternating current, coil main part 76 can produce alternating magnetic field inside, alternating magnetic field can produce repulsion and appeal to permanent magnet 75, thereby promote or attract double-row detecting tube 5 to do reverse motion, make double-row detecting tube 5 produce the vibration, because the alternating current frequency that lets in is controllable, so the vibration frequency of double-row detecting tube 5 also can be controlled; when the coil assembly 7 is used as a magnetoelectric signal detection coil, the reverse motion of the double-row detection tube 5 allows the permanent magnet 75 to cut a magnetic induction line in the coil body 76, so that the coil body 76 generates induced electromotive force, and the coil assemblies 7 installed on the left and right sides of the double-row detection tube 5 simultaneously generate two paths of electric signals to measure the phase difference.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The electromagnetic type vibration coil of the miniature Coriolis mass flowmeter comprises a flowmeter body (1) and is characterized in that a base (3) is installed at the lower end of the flowmeter body (1), double rows of detection tubes (5) are installed at the lower end of the base (3), a shell (2) matched with the double rows of detection tubes (5) is installed at the lower end of the base (3), shunts (4) communicated with the double rows of detection tubes (5) are installed at two ends of the base (3), and coil assemblies (7) are installed at transition positions of outer straight tube sections and outer bending sections of the double rows of detection tubes (5);

coil pack (7) are including fixed pipe (72) of symmetry installation on double-row test tube (5), bolt (71) are all installed to the inside of fixed pipe (72), and the inside of one of them fixed pipe (72) inlays and is equipped with magnet seat (74), permanent magnet (75) are installed to the one end of magnet seat (74), one of them coil seat (73) are installed to the one end of bolt (71), be equipped with on coil seat (73) with coil main part (76) of permanent magnet (75) adaptation.

2. The electromagnetic vibration coil of a miniature coriolis mass flowmeter of claim 1 wherein said coil assembly (7) has a total weight of less than 100g, a maximum diameter of 16mm and a length of 45mm.

3. The electromagnetic vibration coil of a miniature coriolis mass flowmeter of claim 1 characterized in that said flow splitter (4) comprises a main tube embedded inside said base (3) and two branch tubes communicating with said double row of sense tubes (5), said main tube having a connecting flange mounted to its outer end.

4. The electromagnetic vibratory coil of a miniature coriolis mass flowmeter of claim 1 wherein said double row of sense tubes (5) have two vibration stop plates (6) welded to them near the entrance and exit of the upper end.

5. The electromagnetic vibration coil of the miniature coriolis mass flowmeter of claim 1, wherein said housing (2) has symmetrically mounted snaps at its upper end, and said base (3) has symmetrically formed slots on both sides for mating with said snaps.

6. The electromagnetic vibratory coil of a miniature coriolis mass flowmeter of claim 1 wherein said double row sense tube (5) is a U-shaped piece of material formed of a stainless steel.