CN211013104U

CN211013104U - Micro-quantity electromagnetic flowmeter

Info

Publication number: CN211013104U
Application number: CN201922481821.2U
Authority: CN
Inventors: 许北辰
Original assignee: Kaifeng Huabang Instrument Co ltd
Current assignee: Kaifeng Huabang Instrument Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-14
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a micro-quantity electromagnetic flowmeter, include flowmeter body, U type pipe and connect in the honeycomb duct of U type pipe, U type socle portion is located to the flowmeter body, U type socle end is equipped with the blast pipe, the blast pipe upper end is equipped with many siphunculums, the honeycomb duct upper end is equipped with the drainage tube, the drainage tube other end is connected in many siphunculums a port, many siphunculums still are equipped with the seal valve, the seal valve includes valve pillar and lower valve pillar, is equipped with the step hole in the last valve pillar, the downthehole case that is equipped with of step, case both ends cover is equipped with spring I and spring II, the elasticity of spring II is less than spring I, the valve pillar center is equipped with air vent and upper end and last valve pillar threaded connection down, the valve pillar. The utility model has good bubble removing effect; and the electrode of the electromotive force signal is transmitted into the converter, and the converter amplifies, processes and outputs the signal, so that the accuracy of the micro flow measurement of the needle is greatly improved.

Description

Micro-quantity electromagnetic flowmeter

Technical Field

The utility model relates to a micro-volume electromagnetic flowmeter belongs to liquid flow measurement technical field.

Background

The electromagnetic flowmeter measures the flow of conducting fluid based on the electromotive force induced when the conducting fluid passes through external magnetic field by means of electromagnetic induction principle. The structure of the existing electromagnetic flowmeter mainly comprises a magnetic circuit system, a measuring conduit, an electrode, a shell, a lining, a converter and the like. However, after the existing electromagnetic flowmeter is installed, a plurality of bubbles exist in the pipe during measurement, and the arrangement of the bubble discharging structure cannot be too random, so that the positions where the bubbles can be discharged are few, the bubble discharging effect is poor, and the measurement is unstable and the error is large; in addition, when the existing electromagnetic flowmeter measures some tiny flows, the existing electromagnetic flowmeter cannot measure the flows and has large measurement errors. Therefore, there is a need for improvement of the prior art to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a micro-volume electromagnetic flowmeter particularly realizes through following technical scheme:

the utility model discloses a micro-quantity electromagnetic flowmeter, including flowmeter body, U type pipe and the honeycomb duct of connecting in U type pipe, the flowmeter body is located U type pipe bottom, U type pipe side is equipped with the blast pipe, the blast pipe upper end is equipped with the multi-way pipe, the honeycomb duct upper end is equipped with the drainage tube, the drainage tube other end is connected in a multi-way pipe port, the multi-way pipe still is equipped with the seal valve, the seal valve includes upper valve post and lower valve post, is equipped with the step hole in the upper valve post, be equipped with the case in the step hole, case both ends cover is equipped with spring I and spring II, the elasticity of spring II is less than spring I, the lower valve post center is equipped with the air vent and the upper end is connected with upper valve post screw thread, the lower valve post; the multi-way pipe is a five-way pipe, the number of the flow guide pipes and the number of the exhaust pipes are two, the two flow guide pipes and the two exhaust pipes are respectively arranged at the liquid inlet end and the liquid outlet end of the U-shaped pipe, the sealing valve is connected to the open end of the top of the five-way pipe, and the remaining open end is respectively connected with the two flow guide pipes and.

According to the preferable scheme, the device further comprises an overpressure alarm device, the overpressure alarm device comprises an overflow valve connected to the flow guide pipe, a liquid outlet of the overflow valve is connected with a liquid storage device, a sealing plug is arranged at the upper end of the liquid storage device, a piezoelectric switch is arranged at the upper end of the sealing, an alarm and a power module are arranged at the upper end of the liquid storage device, a liquid discharge port is arranged at the lower end of the liquid storage device, and a manual valve is.

Preferably, the U-shaped pipe and the flow guide pipe are connected through flanges, the exhaust pipe and the U-shaped pipe are of an integrally formed structure, and the flow guide pipe and the exhaust pipe are connected with the multi-way pipe through the wire aligning barrel.

Preferably, the U-shaped pipe comprises a stainless steel outer pipe and a liner made of F46 resin.

The utility model has the advantages that: the flowmeter body is located U type socle portion and blast pipe and drainage tube and is got rid of the bubble in the pipeline of flowmeter body department, and its bubble position of exhausting arranges rationally and can the many places get rid of the bubble, and the bubble gets rid of the effect good. The utility model discloses the electromotive force signal in the electrode conveys the converter, the converter is with signal amplification processing output, very big improvement the rate of accuracy of the small flow measurement of needle. Other advantageous effects of the present invention will be further described with reference to the following embodiments.

Drawings

The invention will be further described with reference to the following figures and examples:

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

fig. 2 is a schematic view of a sealing valve structure;

FIG. 3 is a schematic cross-sectional view of a U-shaped tube;

FIG. 4 is a schematic view of a filament tube;

fig. 5 is a schematic view of the flowmeter body structure.

Detailed Description

As shown in the figure: the utility model relates to a micro-quantity electromagnetic flowmeter, which comprises a flowmeter body 1, a U-shaped pipe 2 and a flow guide pipe 3 connected with the U-shaped pipe 2, the flowmeter body 1 is arranged at the bottom of the U-shaped pipe 2, an exhaust pipe 4 is arranged at the side end of the U-shaped pipe 2, the upper end of the exhaust pipe 4 is provided with a multi-way pipe, the upper end of the draft tube 3 is provided with a drainage tube 5, the other end of the drainage tube 5 is connected with one end opening of the multi-way pipe, the multi-way pipe is also provided with a sealing valve 7, the sealing valve 7 comprises an upper valve column 701 and a lower valve column 702, a step hole 703 is arranged in the upper valve column 701, a valve core 704 is arranged in the stepped hole 703, two ends of the valve core 704 are sleeved with a spring I705 and a spring II 706, the elasticity of the spring II 706 is smaller than that of the spring I705, a vent hole is formed in the center of the lower valve column 702, the upper end of the lower valve column 702 is in threaded connection with the upper valve column 701, and the lower valve column 702 is connected with the multi-way pipe.

When the valve core 704 is normally used, the valve core 704 is suspended in the air hole under the support of the spring I705 and the spring II 706, the air hole is not closed, and when air bubbles exist, the air bubbles are discharged from the air hole through the exhaust pipe 4 and the drainage pipe 5. And adverse effects on detection caused by bubbles are avoided. When the pipeline is in failure, the pressure in the pipeline rises, liquid flows into the multi-way pipe from the drainage pipe 5, the flowing high-pressure liquid breaks the state supported by the spring I705 and the spring II 706, the valve core 704 is pushed to move upwards, and at the moment, the valve core 704 closes the air hole to prevent the liquid from being sprayed out from the exhaust position.

In this embodiment, in order to accelerate the removal of bubbles, the multi-way pipe is a five-way pipe 6, the flow guide pipe 3 and the exhaust pipe 4 are both provided with two, and are respectively arranged at the liquid inlet end and the liquid outlet end of the U-shaped pipe 2, the sealing valve 7 is connected to the top opening end of the five-way pipe 6, and the remaining opening ends are respectively connected with the two flow guide pipes 3 and the exhaust pipe 4. This embodiment has increased the bubble position of exhausting, can get rid of the bubble in the honeycomb duct 3, more can get rid of the bubble in the U type pipe 2 nearby in time, very big promotion get rid of the effect of bubble.

On the basis of the above scheme, overpressure alarm device has been add to this embodiment, reminds maintainer when the pipeline breaks down, and the function of this electromagnetic flowmeter assembly has greatly been richened to very big branch. Specifically, the overpressure alarm device comprises an overflow valve 8 connected to the flow guide pipe 3, a liquid outlet of the overflow valve 8 is connected with a liquid storage device 9, a sealing plug 10 is arranged at the upper end of the liquid storage device 9, a piezoelectric switch 11 is arranged at the upper end of the sealing, an alarm 12 and a power module (not shown) are arranged at the upper end of the liquid storage device 9, a liquid discharge port 13 is arranged at the lower end of the liquid storage device 9, and a manual valve 14 is arranged at the liquid discharge port 13. When the pipeline pressure is too high, the overflow valve 8 is opened, liquid flows into the liquid storage device 9 and pushes the sealing plug 10 to move upwards, and finally the piezoelectric switch 11 is closed to switch on the alarm 12. When the failure is eliminated, the solution can be discharged from the liquid outlet 13, and the sealing plug 10 is manually pushed downwards to prepare for triggering the piezoelectric switch 11 next time.

In the above embodiment, the connection manner in this embodiment may be preferentially selected, specifically: the U-shaped pipe 2 and the draft tube 3 are connected by flanges, the exhaust tube 4 and the U-shaped pipe 2 are of an integrally formed structure, and the draft tube 5 and the exhaust tube 4 are connected with the multi-way pipe by the fiber aligning barrel 15. Second, preferably, the U-shaped tube 2 includes an outer tube 201 made of stainless steel and a second liner 202 made of F46 resin. The lining serves to insulate the medium in the pipeline from the conduction of the U-tubes 2 and secondly to protect the U-tubes 2 from corrosion.

In another preferred embodiment, the flowmeter body comprises a conduit 101, a liner 102 inside the conduit, a coil 103 around the periphery of the conduit 101, an electrode 104 mounted on the conduit 101 and the liner 102, a transducer 105, and an enclosure 106. The coil 103 is preferably made of all copper wire. The working principle is as follows: after the converter 105 is electrified, exciting current is output to the coil 103, so that the coil 103 generates a magnetic field to form magnetic induction lines, a conductive medium flows through the lining I102 and makes a cutting magnetic induction line movement through the magnetic field, the medium carries electromotive force (voltage) signals, the electromotive force signals are transmitted into the converter through electrodes 104 arranged on the conduit 101 and the lining I102, and the converter 105 amplifies the signals so as to calculate the flow rate and the flow rate.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A micro-volume electromagnetic flowmeter, characterized by: the flow meter comprises a flow meter body, a U-shaped pipe and a flow guide pipe connected with the U-shaped pipe, wherein the flow meter body is arranged at the bottom of the U-shaped pipe, an exhaust pipe is arranged at the side end of the U-shaped pipe, a multi-way pipe is arranged at the upper end of the exhaust pipe, a drainage pipe is arranged at the upper end of the flow guide pipe, the other end of the drainage pipe is connected with one end of the multi-way pipe, the multi-way pipe is also provided with a sealing valve, the sealing valve comprises an upper valve post and a lower valve post, a step hole is formed in the upper valve post, a valve core is arranged in the step hole, a spring I and a spring II are sleeved at the two ends of the valve core, the; the multi-way pipe is a five-way pipe, the number of the flow guide pipes and the number of the exhaust pipes are two, the two flow guide pipes and the two exhaust pipes are respectively arranged at the liquid inlet end and the liquid outlet end of the U-shaped pipe, the sealing valve is connected to the open end of the top of the five-way pipe, and the remaining open end is respectively connected with the two flow guide pipes and.

2. The micro-miniature electromagnetic flow meter of claim 1, wherein: the flowmeter body comprises a guide pipe, a lining I in the guide pipe, a coil on the periphery of the guide pipe, electrodes arranged on the guide pipe and the lining I, a converter and a packaging shell.

3. The micro-miniature electromagnetic flow meter of claim 1, wherein: still include overpressure alarm device, overpressure alarm device is including connecting the overflow valve on the honeycomb duct, the liquid outlet of overflow valve is connected with the reservoir, the reservoir upper end is equipped with the sealing plug, and sealed upper end is equipped with piezoelectric switch, the reservoir upper end is equipped with alarm and power module, the reservoir lower extreme is equipped with the leakage fluid dram, leakage fluid dram department is equipped with manual valve.

4. The micro-miniature electromagnetic flow meter of claim 1, wherein: the U-shaped pipe and the flow guide pipe are connected through flanges, the exhaust pipe and the U-shaped pipe are of an integrally formed structure, and the flow guide pipe and the exhaust pipe are connected with the multi-way pipe through the wire aligning barrel.

5. The micro-miniature electromagnetic flow meter of claim 1, wherein: the U-shaped pipe comprises a stainless steel outer pipe and a second liner made of F46 resin.