CN85102884B

CN85102884B - Electromagnetic flowmeter

Info

Publication number: CN85102884B
Application number: CN85102884A
Authority: CN
Inventors: 田中义郎; 和田矩一; 黑田正人
Original assignee: Azbil Corp
Current assignee: Azbil Corp
Priority date: 1985-04-15
Filing date: 1985-04-15
Publication date: 1988-10-19
Also published as: CN85102884A

Abstract

Has easy structure De Dian Ci flowmeter, wherein the surface, outside of interior pipe is provided with connector, and the inside/outside short circuit connector of insertion outer tube coupled together with interior tube connector, assemble easily, change and other operations thereby can in not using, manage under the situation of lead-in wire.

Description

Electromagnetic flowmeter

The present invention relates to electromagnetic flowmeter, this electromagnetic flowmeter is used for the flow rate of the fluid that flows through measuring tube is carried out electrical measurement.

Electromagnetic flowmeter utilizes the measurement of faraday (Faraday) electromagnetic induction effect to flow through the flow rate of the conductive fluid of measuring tube.Therefore, for the fluid of any kind of,, just can measure it with electromagnetic flowmeter as long as its conductance is higher than a predetermined conductivity values.For this reason.With regard to corrosion and consume that fluid causes, can adopt various isolated materials to come the interior circumferential inner wall of lining cutting measuring tube.Yet, in traditional electromagnetic flowmeter, when a kind of lining material is unsuitable for a kind of novel fluid to be measured, or when measuring tube needs replacing owing to consume, just must sends back to manufacturer to it and go to replace there.

Yet such replacement is not only time-consuming for the final user but also has a strong impact on measurement.

In order to overcome these shortcomings, provide electromagnetic flowmeter as shown in Figure 1.In this electromagnetic flowmeter, pipe 3 in the cylindrical shape is installed in the outer tube 4, pipe 3 is to make pair of electrodes 1 by integral body in this cylindrical shape, a pair of shape of a saddle drive coil 2 and miscellaneous part are made into.The lead-in wire 5 of interior pipe 3 passes shell fixed part 6 and enters in the converter shell 7, and couples together with the circuit block in the shell 78, and shell fixed part 6 is arranged on the external peripheral surface of outer tube 4.Under this set, pipe 3 can be changed in having only.During pipe, the user can change interior pipe easily in having prepared to have different lining materials a plurality of.Yet, in this electromagnetic flowmeter.Since the lead-in wire 5 by shell fixed part 6 from the inboard of outer tube 4 stretches converter shell 7.With regard to its be difficult at interval go between 5 manage in being inserted into 3 and outer tube 4 between, thereby require masterful technique.According to the state (machining state or welded condition) of interior pipe 3 and outer tube 4 or the assembled state of iron core.Lead-in wire 5 may damage or break away from, and these can make measurement carry out.Therefore, time that this job requirement is a lot of and the notice of concentrating, thus cause the reduction of assembly quality and make manufacturing expense high.

The present invention has considered above-mentioned situation, and to provide Electromagnetic Flow to count its purpose with simple structure, in this electromagnetic flowmeter, on the external peripheral surface of interior pipe, be provided with connector, and the inside/outside short circuit connector that will insert outer tube couples together with interior tube connector, thereby make assembling, replacing and other operations needn't use the lead-in wire of interior pipe, thereby be easy to carry out.

In the accompanying drawing of this instructions:

Fig. 1 is a decomposition diagram, the figure illustrates traditional electromagnetic flowmeter;

Fig. 2 is a decomposition diagram, the figure illustrates according to electromagnetic flowmeter of the present invention.

Wherein label 1 is represented electrode: 2 expression drive coils; Pipe in 3 expressions; 4 expression outer tubes; 10 expression connectors; 11 expression screws; 13 expression screw rods; 14 expression inside/outside short circuit connectors.

Below in conjunction with accompanying drawing the present invention is described.

Fig. 2 is a decomposition diagram, the figure illustrates the electromagnetic flowmeter according to one embodiment of the invention, should be noted that in Fig. 2, indicates identical part with label identical among Fig. 1, thereby has omitted the detailed description to these parts.Referring to Fig. 2, in negative connector 10 integrally is produced on certain part of the external peripheral surface of pipe 3, this part is corresponding to the shell fixed part 6 that is arranged on the outer tube 4, the terminal of connector 10 is connected with the corresponding endpoint of the lead-in wire (not shown) of a pair of electrode 1 and a pair of shape of a saddle drive coil 2, this lead-in wire is produced screw 11 by the inside of interior pipe 3 at the middle body of connector 10.Further, two end portion of interior pipe 3 have big overall diameter, thereby make this overall diameter be substantially equal to the interior diameter of outer tube 4.On these have the corresponding external peripheral surface of

large diameter part

3A and 3B, produce the ring groove (not shown), and O shape ring 20 is set with thereon.Interior pipe 3 axis directions along outer tube 4 are installed in the outer tube 4, and after this, interior pipe 3 alignings and fixing, stop screw 12 is upwards to insert outer tube 4 by stop screw 12.It should be noted that in this embodiment, thus integrally cast electrode 1 and shape of a saddle drive coil 2 make in pipe 3.Yet the present invention is not limited thereto.For example, can embed interior pipe 3 to electrode 1 and shape of a saddle drive coil 2.

The positive connector 14 of inside/outside short circuit is inserted the shell fixed part 6 of outer tube 4 together with screw rod 13, thereby positive connector 14 is coupled together with negative connector 10.Positive connector 14 is sleeved on the screw rod 13 rotationally and can moves along its axis direction.On the external peripheral surface of positive connector 14, integrally produce outshot 15.When outshot 15 pack into slidably this mounting groove 16 of mounting groove 16-be produced on along the axis direction of shell fixed part 6 on the inner circumferential surface of shell fixed part 6-and when making its downward landing, just can stop the rotation of connector 14.Thereby make the connection between connector 10 and 14 rapid and firm.At this moment, the part 13A that is carved with screw thread that is produced on screw rod 13 end portion is screwed into screw 11, thereby makes interior pipe 3 fully aim at and be fixed on the precalculated position of outer tube 4 inside by screw rod 13 and stop screw 12.When screw rod 13 is screwed into,, thereby can couple together positive connector 14 with negative connector 10 satisfactorily because the lower surface of its wing nut 13B has compressed the upper surface that integrally is produced on cylinder part 14a together with positive connector 14.It should be noted that by means of part 13A that is carved with screw thread and wing nut 13B, stoped positive connector 14 to break away from screw rod 13.Label 17 indications are used to connect the lead of positive connector 14 and circuit block 8.In addition, outer tube 4 is coupled together with being responsible for (not shown) together with interior pipe 3, treat that fluid measured just flows through this root and is responsible for.

As mentioned above, in electromagnetic flowmeter according to the present invention, on the external peripheral surface of interior pipe, be provided with connector, be provided with parts such as electrode, coil in the pipe in this.Pipe is installed in the outer tube along the axis direction of outer tube in being somebody's turn to do, and inside/outside short circuit connected device is inserted outer tube so that its connector with interior pipe is coupled together.Adopt this set, just needn't carry out lead is passed the operation that outer tube couples together with converter shell, thereby greatly improve the operability of assembling, replacement and other operations.Owing to do not have the guide passage of exposure, thereby prevented the damage or the disengaging of lead, thereby the flowmeter of easy operating is provided.

Claims

1, a kind of electromagnetic flowmeter comprises:

Electric connector, it has a first and a second portion that can be separated with described first, and the setting of this second portion can match it with described first, thereby the separation conductive path by described electrical connector is provided;

Pipe in cylindrical, it comprises the described first of an electrode, a drive coil and described electrical connector, described first is positioned on the surface, outside of described pipe, and is electrically connected with described electrode and described coil;

One along its hold described in the outer tube of pipe, this outer tube has along the opening that is horizontally through described outer tube;

-electric connector bracing or strutting arrangement, it injects the described opening of described outer tube from the outside, in order to the described second portion of support and connection apparatus, make it to match with the described first of described electrical connector selectively.

2, electromagnetic flowmeter as claimed in claim 1, wherein said electric connector bracing or strutting arrangement has threaded end, so that match with the described first of described electrical connector.

3, electromagnetic flowmeter as claimed in claim 1, wherein said electric connector bracing or strutting arrangement comprise a sleeve pipe and pass the bar of this sleeve pipe vertically, and described bar has screwed end, so that match with the described first of described electrical connector.

4, electromagnetic flowmeter as claimed in claim 3, wherein said electric connector bracing or strutting arrangement comprises locating device, is used to prevent that described sleeve pipe from rotating when described bar is screwed into the described first of described electrical connector.

5, electromagnetic flowmeter as claimed in claim 3, wherein said arrangements of electric connection comprise the electrical lead device that is connected with the described first of described electrical connector by described sleeve pipe.

6, electromagnetic flowmeter as claimed in claim 1, wherein said first has a plurality of pins and receives jack, and described second portion comprises a plurality of pins, the setting of these pins makes it to match with described jack.

7, electromagnetic flowmeter as claimed in claim 3, wherein said bar has the part that is used to hold at the other end relative with described threaded end, and this part that is used to hold is adjacent with described sleeve pipe.

8, electromagnetic flowmeter as claimed in claim 4, wherein said outer tube comprises stationary installation, is used to make described interior pipe that fixing position is arranged in described outer tube.