CN212133751U

CN212133751U - Plug-in electromagnetic flowmeter

Info

Publication number: CN212133751U
Application number: CN202021100029.4U
Authority: CN
Inventors: 顾建欣; 段志鹏; 王占文; 曹福祝
Original assignee: Chengde Bent Star Instr Co ltd
Current assignee: Chengde Bent Star Instr Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-12-11
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses an insertion type electromagnetic flowmeter, which comprises a sensor and an installation component for installing the sensor on a measuring pipe section, wherein the sensor comprises a sensing device and a transmitter, the sensing device comprises a coil bracket, a cable protection pipe and a transmitter which are sequentially connected from bottom to top, the outer sides of the lower half sections of the coil bracket and the cable protection pipe are wrapped with a filling glue layer, and the bottom surface of the filling glue layer is oval; the middle position of the coil support is sequentially provided with a copper sleeve, a tetrafluoro gasket and positive and negative electrodes from inside to outside, the positive and negative electrodes penetrate through the filling adhesive layer, and the positive electrode and the negative electrode are symmetrically arranged on two sides of the coil support. According to the scheme, the positive electrode and the negative electrode are respectively arranged on two sides, so that the magnetic field of the electrodes is increased, and the strength of a detection signal is improved; the bottom surface of the sensor is designed to be oval, so that the streaming situation of water flow to a cylinder is reduced, the pressure difference resistance is further reduced, the separation of a boundary layer is delayed, the electrode is positioned in a high-speed stable flow field, and the stability of an electrode detection signal is improved.

Description

Plug-in electromagnetic flowmeter

Technical Field

The utility model relates to a flowmeter technical field specifically is a bayonet electromagnetic flowmeter.

Background

The flow measurement always occupies a great position in industrial production, and the production efficiency of products can be improved and the quality of the products can be ensured. As is well known, the resource consumption of China is always in the forefront of the world, how to reasonably utilize resources becomes the central importance of the current work, and the most important way is to save energy and reduce emission. In the work of energy conservation and emission reduction, flow detection is an essential part. In recent decades, electromagnetic flow meters have been used in many industries, such as sewage, water supply, agricultural irrigation, water resource management and industrial process water, but they also have many disadvantages, such as too high manufacturing cost and troublesome installation, disassembly and maintenance in large-diameter pipe measurement. Therefore, people have designed bayonet electromagnetic flowmeter on this basis, compare traditional electromagnetic flowmeter, its structure is light, and consequently its manufacturing and installation cost are very low, and it is simple to dismantle, easy maintenance, the commonality is strong, and a product can be used for the flow measurement of multiple bore pipeline, especially is fit for the measurement of heavy-calibre pipeline.

The plug-in electromagnetic flowmeter mainly comprises two parts: a sensor and a transmitter. The sensor is used for measuring the induced electromotive force generated by the fluid flow and transmitting the induced electromotive force to the converter; the converter amplifies the electrical signal and converts the electrical signal to a standard output signal. In actual measurement, the value of the induced electromotive force detected by the electrode is small, usually in the order of microvolts, so that the signal-to-noise ratio of the signal is low, and the measurement accuracy is greatly influenced.

The plug-in electromagnetic flowmeter is a flowmeter with small volume, always has high cost performance and good market prospect, but has poor signal-to-noise ratio and stability because a measurement signal is weak and is easily influenced by the flow characteristic of fluid. Therefore, the development of a novel sensor has important significance for improving the product performance of the plug-in electromagnetic flowmeter.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bayonet electromagnetic flowmeter has solved the problem that above-mentioned background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: an insertion type electromagnetic flowmeter comprises a sensor and an installation component for installing the sensor on a measuring pipe section, wherein the sensor comprises a sensing device and a transmitter, and is characterized in that the sensing device comprises a coil support and a cable protection pipe which are sequentially connected from bottom to top, the cable protection pipe is connected with the transmitter, the outer sides of the lower half sections of the coil support and the cable protection pipe are wrapped with a filling adhesive layer, and the bottom surface of the filling adhesive layer is oval; the coil support intermediate position is by interior copper sheathing, tetrafluoro gasket, copper pillar and positive and negative electrode of installing in proper order outward, positive and negative electrode runs through the filling glue film, and positive pole, negative pole symmetry are installed coil support's both sides.

Preferably, the mounting assembly comprises a mounting seat and a fastener.

Preferably, a stop valve is mounted on the mounting seat.

Preferably, an O-shaped rubber sealing ring is further arranged between the tetrafluoro gasket and the positive and negative electrodes.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the internal cross-sectional structure of the sensor of the present invention;

fig. 3 is a schematic view of the bottom view structure of the sensor of the present invention.

In the figure: 1. measuring a pipe section; 2. a mounting seat; 21. a stop valve; 3. a fastener; 4. a sensing device; 41. a coil support; 42. a cable protection tube; 43. a copper sleeve; 44. a tetrafluoro spacer; 45. a copper pillar; 46. positive and negative electrodes; 47. an O-shaped rubber sealing ring; 48. filling the adhesive layer; 5. and a transmitter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an insertion-type electromagnetic flowmeter, which includes a sensor and an installation component for installing the sensor on a measurement pipe section 1, wherein the sensor includes a sensing device 4 and a transmitter 5, and is characterized in that the sensing device 4 includes a coil support 41 and a cable protection tube 42 which are connected in sequence from bottom to top, the cable protection tube 42 is connected with the transmitter 5, the outer sides of the lower half sections of the coil support 41 and the cable protection tube 42 are wrapped with a filling adhesive layer 48, and the bottom surface of the filling adhesive layer 48 is oval; coil support 41 intermediate position from interior to exterior copper sheathing 43, tetrafluoro gasket 44, copper pillar 45 and positive negative electrode 46 of installing in proper order, positive negative electrode 46 runs through filling glue film 48, and just positive pole, negative pole symmetry are installed coil support 41's both sides.

Preferably, a stop valve 21 is mounted on the mounting seat 2.

Preferably, the mounting assembly comprises a mounting block 2 and a fastener 3.

Preferably, an O-ring seal 47 is further installed between the tetrafluoro gasket 44 and the positive and negative electrodes 46.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses well positive and negative electrode 46 is installed respectively in both sides, and then makes the magnetic field increase of electrode, and then has improved the intensity of detected signal.

2. The bottom surface of the sensor is designed to be oval, the long axis direction is consistent with the direction of the positive electrode and the negative electrode, and the sensor is horizontally arranged along the water flow direction, so that the streaming situation of water flow to a cylinder is reduced, the pressure difference resistance is further reduced, the separation of a boundary layer is delayed, the electrodes are positioned in a high-speed stable flow field, and the stability of electrode detection signals is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An insertion type electromagnetic flowmeter comprises a sensor and an installation component for installing the sensor on a measuring pipe section (1), wherein the sensor comprises a sensing device (4) and a transmitter (5), and is characterized in that the sensing device (4) comprises a coil support (41) and a cable protection pipe which are sequentially connected from bottom to top, the cable protection pipe is connected with the transmitter (5), the outer sides of the lower half sections of the coil support (41) and the cable protection pipe are wrapped with a filling adhesive layer (48), and the bottom surface of the filling adhesive layer (48) is oval; coil support (41) intermediate position is by interior copper sheathing (43), tetrafluoro gasket (44), copper pillar (45) and positive and negative electrode (46) of installing in proper order outward, positive and negative electrode (46) run through packing glue film (48), and positive pole, negative pole symmetry are installed the both sides of coil support (41).

2. An insertion-type electromagnetic flowmeter according to claim 1, characterized in that: the mounting assembly comprises a mounting seat (2) and a fastener (3).

3. An insertion-type electromagnetic flowmeter according to claim 2, characterized in that: and a stop valve (21) is installed on the installation seat (2).

4. An insertion-type electromagnetic flowmeter according to claim 1, characterized in that: and an O-shaped rubber sealing ring (47) is also arranged between the tetrafluoro gasket (44) and the positive and negative electrodes (46).