Combined type small-caliber electromagnetic flowmeter
By using measuring tubes made of non-magnetic metal materials and insulated linings and shells made of plastic materials, small-diameter electromagnetic flowmeters are manufactured by injection molding, which solves the problems of poor integration and high cost in the prior art, and achieves high Performance, low-cost flowmeter design, suitable for industrial production.
Patent Information
- Application Number
- CN202411356843.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-13
AI Technical Summary
The existing small-diameter threaded electromagnetic flowmeter has problems such as poor integration, many parts, high material and labor costs, and the mechanical properties of non-metallic materials are poor and easy to damage. The traditional manufacturing procedures are complex and are not conducive to industrial production.
The insulated lining and shell composed of measuring tubes made of non-magnetic metal materials and plastic materials are manufactured at one time through injection molding to form an overall design, reduce parts, and improve mechanical performance and production efficiency.
It realizes a high-performance and low-cost electromagnetic flowmeter, with good sensor sensitivity and measurement accuracy, simplifies the production process, reduces labor and material costs, and is suitable for large-scale industrial production.
Smart Images
Figure CN119124282A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an electromagnetic flowmeter, and in particular to a shell, an inner lining and a connection part interface of an electromagnetic flowmeter. The present invention is applicable to the field of flow measurement based on the electromagnetic measurement principle, and is particularly applicable to heat meters, cold meters, water meters, sewage meters, etc. based on the electromagnetic measurement principle, and is also applicable to rapid filling and flow ratio systems. Background Art
[0002] Electromagnetic flowmeter is a flow measurement instrument based on Faraday's electromagnetic induction principle. Its basic principle is that when a fluid passes through a magnetic field, an induced electromotive force is generated. The magnitude of the induced electromotive force is proportional to the flow rate of the fluid. The flow rate of the fluid is obtained by measuring the induced electromotive force. Usually, an electromagnetic flowmeter consists of a sensor and a transmitter.
[0003] The sensor is mainly composed of a measuring tube, an excitation coil, a detection electrode, and a housing that meets the protection standards. The measuring tube of the existing sensor is composed of a metal pipe or a non-metallic pipe, and the connection between the measuring tube composed of a metal pipe and the housing is welded or clamped. These connection methods have poor integrity in the manufacture of small-caliber electromagnetic flowmeters, many parts, and high material and labor costs.
[0004] The measuring tube of the small-diameter threaded connection sensor is composed of a metal tube and an insulating lining, or a non-metallic pipe. When it is composed of a non-metallic insulating pipe, it is easy to be damaged during use due to the poor mechanical properties and low strength of non-metallic materials. When it is composed of a metal tube and an insulating lining, the manufacturing cost is high because the insulating lining is manufactured by a separate process.
[0005] The measuring tube of the small-diameter threaded connection sensor is composed of a metal tube and an insulating lining, and the outer shell is composed in another way. The insulating lining and the outer shell are made of different materials. When they are manufactured separately, the integrity of the electromagnetic flowmeter is poor, there are many parts, and the material and labor costs are high.
[0006] In summary, the existing small-diameter threaded electromagnetic flowmeter insulation lining and shell have the following problems: 1. When a metal pipe and an insulation lining are used, since the insulation lining and the instrument shell are manufactured separately, the electromagnetic flowmeter has poor integrity, many parts, and high material and labor costs. 2. When a non-metallic pipe is used, since non-metallic materials have poor mechanical properties and low strength, they are easily damaged during use. 3. Traditional electromagnetic flowmeters have many parts, many installation and manufacturing procedures, and high labor costs, which are not conducive to large-scale industrial production.
[0007] Therefore, it is necessary to design a composite small-caliber electromagnetic flowmeter. Summary of the invention
[0008] The purpose of the invention is to solve the problems existing in the existing small-caliber threaded electromagnetic flowmeters and to provide a high-performance, low-cost electromagnetic flowmeter that is easy to mass-produce industrially.
[0009] The electromagnetic flowmeter sensor comprises a measuring tube (1), a shell (3) and an insulating lining (2). The measuring tube (1) is made of a non-magnetic metal material, and the shell (3) and the insulating lining (2) are made of a plastic material. The sensors are manufactured in one go by an injection molding method.
[0010] The measuring tube (1) is made of a non-magnetic metal material tube, which can be made of independent non-magnetic metal material tubes at both ends of the sensor, or can be made of non-magnetic metal material tubes connected into one. The outer shell (3) can be round in shape, or other shapes with a hollow interior.
[0011] The beneficial effects of the present invention are as follows:
[0012] 1. The insulating lining and shell of the electromagnetic flowmeter sensor measuring tube are made of plastic material and are manufactured in one go by injection molding. They have good integrity, few parts, low material and labor costs, and are easy to mass-produce industrially.
[0013] 2. It is made of metal pipe and insulating lining, which has better mechanical properties than non-metallic materials, high strength and is not easy to be damaged during use.
[0014] 3. The sensors produced by injection molding method have excellent performance, good sensor sensitivity and measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic cross-sectional structural diagram of the electromagnetic flowmeter of the present invention in form 1;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of form 2 of the electromagnetic flowmeter of the present invention.
[0017] In the figure: 1. Measuring tube; 2. Insulating lining; 3. Outer shell. DETAILED DESCRIPTION
[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.
[0019] See also Figure 1-2 The electromagnetic flowmeter comprises a measuring tube 1, an insulating lining 2 and a shell 3, and the measuring tube 1, the insulating lining 2 and the shell 3 are designed as an integral whole.
[0020] The measuring tube 1 is made of a non-magnetic metal material; it can be composed of independent non-magnetic metal tubes at both ends of the sensor, or it can be composed of non-magnetic metal tubes connected into one.
[0021] The insulating lining 2 and the outer shell 3 are finished products by one-step injection molding.
[0022] The insulating lining 2 and the outer shell 3 are made of non-metallic materials.
[0023] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A composite small-caliber electromagnetic flowmeter, characterized in that: The electromagnetic flowmeter comprises a measuring tube (1), an insulating lining (2) and a housing (3).
2. The composite small-caliber electromagnetic flowmeter according to claim 1 is characterized in that: The insulating lining (2) is manufactured in one go using plastic by an injection molding method.
3. The composite small-caliber electromagnetic flowmeter according to claim 1 is characterized in that: The electromagnetic flowmeter comprises a measuring tube (1) whose interface thread is made of metal material.
4. The composite small-caliber electromagnetic flowmeter according to claim 1 is characterized in that: The electromagnetic flowmeter comprises a measuring tube (1) which is integrally cast from a non-magnetic metal material or has two ends made of metal material.