CN103674143A - Coriolis mass flowmeter sensor and coil former thereof - Google Patents

Abstract

The invention discloses a Coriolis mass flowmeter sensor and its coil frame. The coil frame includes a coil winding part and a support part connected with the coil winding part. The support part is fixedly provided with an incoming line post and an outgoing line post. With such an arrangement, the coil bobbin of the Coriolis mass flowmeter sensor provided by the present invention can avoid the problems of messy lead wires and disconnection of lead wires.

Description

Coriolis mass flowmeter sensor and its coil skeleton

technical field

The invention relates to the technical field of sensors, in particular to a Coriolis mass flowmeter sensor and a coil frame thereof.

Background technique

Coriolis mass flowmeter, referred to as Coriolis mass flowmeter, is a kind of instrument that directly measures the mass flow rate by using the principle of Coriolis force proportional to the mass flow rate generated by the fluid flowing in the vibrating tube. It is directly used to measure the mass flow, density and temperature of the medium. It has the characteristics of high measurement accuracy, wide range ratio, good stability and low maintenance, and has been widely used in the petrochemical industry.

The mass flowmeter consists of three parts: sensor, transmitter and digital indicating accumulator. The sensor of Coriolis mass flowmeter is made according to the Coriolis effect, including measuring tube, electromagnetic driver, and electromagnetic detector. The electromagnetic driver makes the measuring tube vibrate at its natural frequency, and the introduction of the flow causes the U-shaped measuring tube to produce a distortion under the action of Coriolis force, and a phase difference is generated on its left and right sides, according to the Coriolis effect , the phase difference is proportional to the mass flow rate. The electromagnetic detector converts the phase difference into a corresponding level signal and sends it to the transmitter. After filtering, integration, amplification and other power processing, it is converted into an analog signal proportional to the quality and a frequency signal within a certain range. Output .

The measuring principle of the mass flowmeter is based on Newton's second law of motion

F=ma

In the formula, F—fluid force; m—measured medium quality; a—acceleration.

When the fluid passes through two parallel measuring tubes, an acceleration transverse to the flow velocity direction and the corresponding Coriolis force will be generated, which will cause the measuring tube to oscillate and twist. This distortion phenomenon is called Coriolis profit phenomenon.

According to Newton's second law of motion, the amount of distortion of the measuring tube is completely proportional to the mass flow through the measuring tube. When the fluid flows through the measuring tube, the fluid will be affected by the Coriolis force, and the reaction of the Coriolis force on the fluid in the measuring tube will generate a phase difference between the inlet and the outlet. When the fluid is zero, the measuring tube vibrates at the natural frequency, the measuring tube does not produce distortion, and the phase difference between the fluid inlet and outlet is zero. When fluid flows through the measuring tube, the vibration of the tube at the inlet decelerates, and the vibration of the tube at the outlet accelerates, and a phase difference occurs between the inlet and the outlet. When the mass flow rate increases, the phase difference also increases. It is detected by electromagnetic signals installed on the inlet and outlet measuring tubes. The device can measure the phase difference.

The mass flow sensor in the prior art is provided with a coil bobbin for winding the coil. However, the current coil bobbin has no mounting holes for binding posts, and the lead-in and lead-out lines are disorderly and indistinguishable, and the lead-out lines in the prior art can only be pasted On the measuring tube, when the measuring tube vibrates, it is easy to cause the lead-out line to break due to the vibration, resulting in the measurement accuracy of the flowmeter or failing to work.

Therefore, how to solve the problems of messy lead wires and easy disconnection of lead wires in the mass flow sensor in the prior art has become an important technical problem to be solved by those skilled in the art.

Contents of the invention

The invention provides a coil skeleton of a Coriolis mass flowmeter sensor, which can avoid the problems of messy lead wires and disconnection of lead wires. The present invention also provides a Coriolis mass flowmeter sensor comprising the above-mentioned coil frame.

The coil skeleton of a Coriolis mass flowmeter sensor provided by the present invention includes a coil winding part and a support part connected with the coil winding part, and the support part is fixedly provided with an incoming wire post and an outgoing wire post.

Preferably, the support part is provided with an installation hole for an incoming line post and an installation hole for an outgoing line post. .

Preferably, the lead-out wire post is clamped in the lead-out wire mounting hole, and the incoming wire post is clipped in the incoming wire post installation hole.

Preferably, the lead-out post is welded to the lead-out installation hole, and the lead-in post is welded to the lead-in post installation hole.

Preferably, the outgoing wire post is screwed to the outgoing line installation hole, and the incoming wire post is screwed to the incoming wire post installation hole.

A Coriolis mass flowmeter sensor provided by the present invention includes a coil bobbin and a coil arranged on the coil bobbin, the coil bobbin is the coil bobbin described in any one of the above, and the lead wire of the coil is fixedly arranged on The lead-in wire post and the lead-in wire of the coil are fixedly arranged on the lead-in wire post.

Preferably, the outgoing wire of the coil is welded to the outgoing wire post, and the incoming wire of the coil is welded to the incoming wire post.

Preferably, the outgoing wire of the coil is bound to the outgoing wire post, and the incoming wire of the coil is bound to the incoming wire post.

A coil skeleton provided by the present invention includes a coil winding part and a support part connected to the coil winding part, and the support part is fixedly provided with an incoming wire post and an outgoing wire post. With this setting, the lead-in line of the coil of the Coriolis mass flowmeter sensor can be fixed on the lead-in line column, and the lead-out line can be fixed on the lead-out line column, which avoids the confusion of the lead-in and lead-out lines, and the lead-in and lead-in lines do not have to be fixed on the On the measuring tube of the sensor, the problem of disconnection of the lead-out line and the lead-in line due to the vibration of the measuring tube is avoided.

The present invention also provides a Coriolis mass flowmeter sensor, comprising a coil bobbin and a coil arranged on the coil bobbin, the coil bobbin is the above-mentioned coil bobbin, and the lead wire of the coil is fixedly arranged on the coil bobbin The lead-in wire column is fixedly arranged on the lead-in wire column of the coil. With such an arrangement, the Coriolis mass flowmeter sensor provided by the present invention avoids the problem of messy lead-in wires and lead-out wires and the problem of disconnection of the lead-in wires and lead-in wires due to the vibration of the measuring tube.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

1 is a schematic diagram of a coil skeleton of a Coriolis mass flowmeter sensor in a specific embodiment of the present invention;

2 is a schematic diagram of a fixed structure of a bobbin in a specific embodiment of the present invention;

In Figure 1:

Coil winding part-11, support part-12, lead-in post installation hole-13, lead-out post installation hole-14;

In Figure 2:

Coil bobbin-21, fixed plate assembly-22, baffle plate-23.

Detailed ways

This specific embodiment provides a coil bobbin of a Coriolis mass flowmeter sensor, which can avoid the problems of messy lead wires and disconnection of lead wires. The specific embodiment also provides a Coriolis mass flowmeter sensor comprising the above-mentioned coil frame.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, a coil skeleton of a Coriolis mass flowmeter sensor provided in this specific embodiment includes a coil winding part 11 and a support part 12 connected to the coil winding part 11, and the support part 12 is fixedly provided with an introduction line post and Lead out the line post.

With this setting, the lead-in line of the coil of the Coriolis mass flowmeter sensor can be fixed on the lead-in line column, and the lead-out line can be fixed on the lead-out line column, which avoids the confusion of the lead-in and lead-out lines, and the lead-in and lead-in lines do not have to be fixed on the On the measuring tube of the sensor, the problem of disconnection of the lead-out line and the lead-in line due to the vibration of the measuring tube is avoided.

As a preference and example, the supporting part 12 is provided with an incoming line post installation hole 13 and an outgoing line post installation hole 14 , the incoming line post is fixedly arranged in the incoming line post installation hole 13 , and the outgoing line post is fixedly arranged in the outgoing line post installation hole 14 . For example, the lead-out line post can be clamped in the lead-out line mounting hole through an interference fit, and the lead-in line post can also be clamped in the lead-in line post mounting hole 13 through an interference fit. Of course, other installation methods can also be used. For example, the outgoing line post can be connected to the outgoing line post mounting hole 14 by means of welding or screwing, and the incoming line post can also be connected to the incoming line post mounting hole 13 by welding or screwing.

This specific embodiment also provides a Coriolis mass flowmeter sensor, which includes a coil bobbin and a coil arranged on the coil bobbin. The lead-in line is fixedly arranged on the lead-in line column.

With such arrangement, the Coriolis mass flowmeter sensor provided in this specific embodiment avoids the problem of messy lead-in wires and lead-out wires and the problem of disconnection of the lead-in wires and lead-in wires due to the vibration of the measuring tube. The derivation process of this beneficial effect is generally similar to the derivation process of the beneficial effect brought by the above-mentioned coil bobbin, so it will not be repeated here.

It should be noted that the lead-out wire of the coil can be welded to the lead-out wire post, and the lead-in wire of the coil can also be welded to the lead-in wire post. Of course, it can also be connected in other ways. For example, the lead-out wire of the coil can also be bound to the lead-in wire post through a wire tie, and similarly, the lead-in wire of the coil can also be bound to the lead-in wire post through a wire tie.

In the preferred solution of this specific embodiment, please refer to FIG. 2 , one side of the coil bobbin 21 is connected to the fixed plate assembly 22, and the side of the coil bobbin 21 connected to the fixed plate assembly 22 is a polygonal side, and the fixed plate assembly 22 is A baffle 23 is fixedly arranged, and the baffle 23 abuts against one side of the polygon to prevent the coil skeleton 21 from rotating.

So set, the bobbin fixing structure provided by this specific embodiment, because the side of the coil bobbin 21 connected with the fixed sheet assembly 22 is a polygonal side, and the baffle plate 23 arranged on the fixed sheet assembly 22 is against one side of the polygonal side That is, the baffle plate 23 forms a limiting structure with one side of the polygonal side, which can prevent the coil bobbin 21 from rotating relative to the fixed piece assembly 22 .

As a preference and an example, the side of the coil bobbin 21 provided in this specific embodiment connected to the fixed sheet assembly 22 may be a rectangular side.

Preferably, there are two baffles 23 fixedly arranged on the fixed plate assembly 22, and the two baffles 23 respectively correspond to two opposite sides of the rectangular side.

With this arrangement, the two baffles 23 and the fixing plate assembly 22 can form a U-shaped limiting structure, and the coil bobbin 21 is limited by the U-shaped limiting structure, which has higher reliability.

The above-mentioned baffle plate 23 may be of an integrated structure with the fixed plate assembly 22, of course, it may also be of a separate structure connected together by welding or the like. The sides where the coil bobbin 21 is connected to the fixed plate assembly 22 may also be other types of polygonal sides, for example, triangular, hexagonal, octagonal and so on.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A coil skeleton of a Coriolis mass flowmeter sensor, comprising a coil winding portion and a support portion connected to the coil winding portion, characterized in that, the support portion is fixedly provided with an incoming wire post and an outgoing wire post. 2. The bobbin according to claim 1, wherein the supporting part is provided with an installation hole for an incoming wire post and an installation hole for an outgoing wire post, and the incoming wire post is fixedly arranged in the installation hole for the incoming wire post, and the The lead-out post is fixedly arranged in the installation hole of the lead-out post. 3 . The bobbin according to claim 2 , wherein the lead-out post is clamped in the lead-out mounting hole, and the lead-in post is clamped in the lead-in mounting hole. 4 . 4 . The bobbin according to claim 2 , wherein the lead-out post is welded to the lead-out installation hole, and the lead-in post is welded to the lead-in post installation hole. 5 . The bobbin according to claim 2 , wherein the lead-out post is screwed to the lead-out mounting hole, and the lead-in post is threaded to the lead-in mounting hole. 6 . 6. A Coriolis mass flowmeter sensor, comprising a bobbin and a coil arranged on the bobbin, characterized in that, the bobbin is the bobbin according to any one of claims 1-5, said The lead-out wire of the coil is fixedly arranged on the lead-out wire post, and the lead-in wire of the coil is fixedly arranged on the lead-in wire post. 7. The Coriolis mass flowmeter sensor according to claim 6, wherein the lead-out wire of the coil is welded to the lead-out wire post, and the lead-in wire of the coil is welded to the lead-in wire post. 8 . The Coriolis mass flowmeter sensor according to claim 6 , wherein the lead-out wire of the coil is bound to the lead-out wire post, and the lead-in wire of the coil is bound to the lead-in wire post.

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