CN201680872U

CN201680872U - Core-free conduit of electromagnetic flow meter

Info

Publication number: CN201680872U
Application number: CN2010201868131U
Authority: CN
Inventors: 郝宝珍
Original assignee: SHANGHAI KENT INTELLIGENCE METER CO Ltd
Current assignee: SHANGHAI KENT INTELLIGENCE METER CO Ltd
Priority date: 2010-05-07
Filing date: 2010-05-07
Publication date: 2010-12-22
Anticipated expiration: 2020-05-07

Abstract

The utility model provides a core-free conduit of an electromagnetic flow meter, relating to the technical field of a flow meter, and aiming at solving the technical problems that a measuring head of the existing flow meter has low measuring precision and moisture-proof capability, complex manufacture technology and high manufacture cost. The core-free conduit comprises a conduit body, a magnet exciting coil and an electrode set, wherein the electrode set is arranged at the lower end of the conduit body, and the magnet exciting coil is connected with the electrode set in series. The core-free conduit is characterized in that the conduit body is made from polyurea elastic resin, and the magnet exciting coil is packed between the inner pipe wall and the outer pipe wall of the conduit body. The core-free conduit can improve the measuring precision of the flow meter and have low cost.

Description

The coreless conduit of electromagnetic flowmeter

Technical field

The utility model relates to the technology of flowmeter, particularly relates to a kind of technology of coreless conduit of electromagnetic flowmeter.

Background technology

Electromagnetic flowmeter is a kind of flow instrument, during use its measuring head is inserted the pipeline ad-hoc location, can measure the local flow of this position.

The body of the measuring head conduit of existing electromagnetic flowmeter is all made by non-magnetic conductive metal material, and the electrode group is equipped with in the lower end of body, and the field coil that is connected in series with the electrode group is housed in the tube cavity; The measuring head conduit of existing electromagnetic flowmeter has following defective: 1) can produce relative displacement owing to the vibrations of tested pipeline between field coil and the body, thereby have influence on the symmetry and the stability in the magnetic field that field coil produces, and then influence measuring accuracy; 2) existing measuring head conduit is when wet environment uses, and extraneous wet gas (or moisture content) can leak out to field coil, and its insulating property are reduced and cisco unity malfunction.3) body of existing measuring head conduit all is the metal body, and not only material cost height, and its inwall must have corrosion-inhibiting coating, so the manufacturing process more complicated, and cost of manufacture is also higher.

The utility model content

At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of measuring accuracy height, and moistureproof ability is strong, and manufacturing process is simple, and the coreless conduit of electromagnetic flowmeter cheap for manufacturing cost.

In order to solve the problems of the technologies described above, the coreless conduit of a kind of electromagnetic flowmeter provided by the utility model, comprise body, field coil and electrode group, described electrode group is installed on the body lower end, described field coil is connected in series with the electrode group, it is characterized in that: described body is a polyureas elastic resin body, and described field coil is packaged between the inside and outside tube wall of body.

The coreless conduit of the electromagnetic flowmeter that the utility model provides, because field coil is packaged between the inside and outside tube wall of body, therefore can not produce relative displacement between field coil and the body, can guarantee the symmetry and the stability in the magnetic field that field coil produces, improve measuring accuracy; And when wet environment used, extraneous wet gas (or moisture content) can not leak out to field coil yet, can guarantee the insulating property of field coil, has very strong moistureproof ability; In addition,, therefore do not need the coated corrosion-inhibiting coating of wall within it, energy simplified manufacturing technique, reduction cost of manufacture because body is made by the polyureas elastic resin.

Description of drawings

Fig. 1 is the radial cross-section of coreless conduit of the electromagnetic flowmeter of the utility model embodiment;

Fig. 2 is the axial cut-open view of coreless conduit of the electromagnetic flowmeter of the utility model embodiment.

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.

As Fig. 1-shown in Figure 2, the coreless conduit of a kind of electromagnetic flowmeter that the utility model embodiment is provided, comprise body 1, field coil 2 and electrode group 3, described electrode group 3 is installed on body 1 lower end, described field coil 2 is connected in series with electrode group 3, it is characterized in that: described body 1 is a polyureas elastic resin body, and described field coil 2 is packaged between the inside and outside tube wall of body 1.

The method for making of the coreless conduit of the electromagnetic flowmeter that the utility model embodiment is provided is characterized in that, concrete steps are as follows:

1) field coil 2 is connected in series with electrode group 3;

2) field coil 2 is positioned between the inside and outside tube wall of making mould of body 1, and makes electrode group 3 be positioned at the lower end of the making mould of body 1;

3) adopt centrifugal casting method or spraying process the polyureas elastic resin to be injected the making mould of body 1;

4) etc. take out measuring head behind the polyureas elastic resin solidified forming from mould, measuring head is made promptly to accuse and is finished.

When the utility model embodiment was used for the less flowmeter of latus rectum, its body can adopt that centrifugal casting method is integrated poured to form.

When the utility model embodiment was used for the bigger flowmeter of latus rectum, its body can adopt the spraying process integral spray to form.

Claims

1. the coreless conduit of an electromagnetic flowmeter comprises body, field coil and electrode group, and described electrode group is installed on the body lower end, and described field coil is connected in series with the electrode group, it is characterized in that: described field coil is packaged between the inside and outside tube wall of body.