CN2395255Y

CN2395255Y - Magnetic inductive flow meter

Info

Publication number: CN2395255Y
Application number: CN 99244750
Authority: CN
Inventors: 徐兆火
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-16
Filing date: 1999-09-16
Publication date: 2000-09-06
Anticipated expiration: 2009-09-16

Abstract

The utility model discloses a magnetic induction flow meter which is composed of a base, an impeller and an upper cover, wherein the top of the base is downwards provided with a groove and the center of the bottom of the groove is convexly provided with a short shaft. The side edge face of the base is provided with a water inlet pipeline which is communicated with the groove. The impeller is arranged in the groove of the base, and circular holes are arranged on the bottom face of the impeller. A circular hole and a permanent magnet are arranged on the top face of the impeller, and the upper cover is fixedly arranged on the top face of the base. The bottom face of the upper cover corresponding to the circular hole of the impeller is convexly and downwards provided with a short shaft. A water outlet pipeline which is communicated with the bottom face of the upper cover is arranged on the top face of the upper cover, and a magnetic induction coil is buried on the top face of the upper cover. Both ends of the magnetic induction coil are respectively connected with a signal output wire.

Description

Magnetic induction flowmeter

A kind of magnetic induction flowmeter of the utility model is relevant with flowmeter structure, is meant a kind of flowmeter that utilizes the accurate sensing fluid flow of magnetic red principle of induction especially, belongs to magnetic induction measurement equipment.

As everyone knows, traditional flowmeter all is based on the Mechanical Driven measurement, system utilizes current to promote to be arranged at wheel rotation in the inner structure, and the power transmission of utilizing this wheel rotation makes traditional flowmeter be able to reach by the mutual driving between this gear set the function of calculated flow rate to the counting gear group that is connected; Yet, these traditional flowmeters have following shortcoming in the use of reality: promptly not only have problems such as manufacturing tolerance and assembly error between each gear in this flowmeter, and the factors such as influence of impurity in component wear during long-term operation and the water, all make the measuring function of this flowmeter lose original accuracy gradually, again, the tradition flowmeter because of need with mechanical drive, make it not only very complicated on structural design, and to be can be ccontaining aforementioned machinery on the outward appearance of integral body and volume huge especially and heaviness, add the part of traditional flowmeter and the expense of assembling whole cost can be in any more, and then cause traditional flowmeter to lose the market competitiveness gradually.

The fundamental purpose of the utility model provides a kind of magnetic induction flowmeter, the current that utilize magnetic induction that each is entered in the flowmeter all can produce a magnetic force pulse signal, utilize this pulse signal to transfer in succession the electronic computing units again, thereby accurately calculate real fluid flow.Owing to adopt the basis of magnetic induction as sensing flux, so need not to come calculated flow rate in mechanically operated mode, make except that simplifying a large amount of physical construction whole volume more dwindles, also can overcome the machine error that traditional flowmeter is brought when measuring flow, make measured value more accurate.

A kind of magnetic induction flowmeter of the utility model is made up of a base, an impeller and a loam cake; Wherein, the top of this base is to having a groove, and the bottom center of this groove convexes with a minor axis, and the appropriate position of this base lateral margin face is provided with a water inlet pipe that communicates with this groove again; And this impeller system is placed in the groove of this base, and is provided with a circular hole in the bottom faces of this impeller, inserts for cover on the minor axis of this base, and the appropriate location then is provided with a circular hole and is embedded with a permanent magnet on the top surface of this impeller; And this loam cake system is fixedly arranged on the top surface of this base, and then convex with a minor axis downwards on the loam cake bottom faces with respect to the circular hole of this impeller, and be provided with an outlet conduit that is connected with its bottom faces in the top surface of this loam cake, on the top surface of this loam cake, be embedded with a magnetic induction coil again, and two ends of this magnetic induction coil are to connect respectively to set out an output line.

A kind of magnetic induction flowmeter of the utility model, its advantage is: simple in structure, easy to operate, safe in utilization, the measuring accuracy height, small product size is little, cost is low, long service life, helps producing in batches, improving the market competitiveness.

The utlity model has following accompanying drawing:

Fig. 1 is the schematic perspective view of the utility model.

Fig. 2 a, b, c are the three-dimensional exploded view of the utility model.

Fig. 3 is an A-A diagrammatic cross-section among Fig. 2 a.

Fig. 4 is a B-B diagrammatic cross-section among Fig. 2 a.

Fig. 5 is a C-C diagrammatic cross-section among Fig. 2 b.

Fig. 6 is a D-D diagrammatic cross-section among Fig. 2 c.

Number in the figure is as follows:

10 bases, 11 grooves, 12,31 minor axises

13 water inlet pipes, 20 impellers, 21,22 circular holes

23 permanent magnets, 30 loam cakes, 32 outlet conduits

33 magnetic induction coils, 34 output line A electronic computing units

Now lift preferred embodiment and cooperate graphic being described in detail as follows:

See also Fig. 1 to shown in Figure 6, a kind of magnetic induction flowmeter of the utility model is made up of a base 10, an impeller 20 and a loam cake 30; Wherein, the top of this base 10 is to having a groove 11, and the bottom center of this groove 11 convexes with a minor axis 12, and the appropriate position of these base 10 lateral margin faces is provided with a water inlet pipe 13 that communicates with this groove 11 again; This impeller 20 is to be placed in the groove 11 of this base 10, and the bottom faces in this impeller 20 is provided with a circular hole 21, insert for cover on the minor axis 12 of this base 10, the appropriate location then is provided with a circular hole 22 and is embedded with a permanent magnet 23 on the top surface of this impeller 20; In addition, this loam cake 30 is to be fixedly arranged on the top surface of this base 10 with ultrasonic, then convex with a minor axis 31 downwards on loam cake 30 bottom faces with respect to the circular hole 22 of this impeller 20, and the top surface in this loam cake 30 is provided with an outlet conduit 32 that is connected with its bottom faces, on the top surface of this loam cake 30, be embedded with a magnetic induction coil 33 again, and two ends of this magnetic induction coil 33 are to have to connect respectively to set out an output line 34, utilize this output line 34 to be able to the magnetic induction pulses signal from magnetic induction coil 33 is transferred among the phase electronic computing units A in succession (as shown in Figure 1), to calculate accurate data on flows.

Please continue to consult Fig. 2 a, b, shown in the c, when using the utility model, first water inlet pipe 13 with base 10 connects and places a water source supply place, make current be able to directly enter in the groove 11 of base 10 from this water inlet pipe 13, and discharge by the outlet conduit 32 of this loam cake 30, this moment, current entered in the process of this base 10, can promote this impeller 20 continuously rotates, and make these impeller 20 revolutions moving once, permanent magnet 23 on it promptly can produce a magnetic induction pulses signal to the magnetic induction coil in the loam cake 30 33, and this magnetic induction pulses signal promptly can transfer among the electronic computing units A via this output line 34, calculates correct flow with accumulation; That is to say: promptly utilize the magnetic force on this permanent magnet 23, the number of times that makes current promote these impeller 20 rotations is changed into a continual magnetic induction, and get a correct flow number again by the output of magnetic induction, whole process need not extra electric power, and need not complicated physical construction and calculate, even if use also very safe in the occasion of high risk.

Claims

1. a kind of magnetic induction flowmeter of the utility model, it is characterized in that: this flowmeter is made up of a base, an impeller and a loam cake; Wherein, the top of this base is to having a groove, and the bottom center of this groove convexes with a minor axis, and this base lateral margin face place is provided with a water inlet pipe that communicates with this groove again; And this impeller system is placed in the groove of this base, and is provided with a circular hole in the bottom faces of this impeller, inserts for cover on the minor axis of this base, then is provided with a circular hole on the top surface of this impeller and is embedded with a permanent magnet; And this loam cake system is fixedly arranged on the top surface of this base, and then convex with a minor axis downwards on the loam cake bottom faces with respect to the circular hole of this impeller, and be provided with an outlet conduit that is connected with its bottom faces in the top surface of this loam cake, on the top surface of this loam cake, be embedded with a magnetic induction coil again, and two ends of this magnetic induction coil are to connect respectively to set out an output line.