CN215524716U - Multi-electrode vortex street flow sensor - Google Patents

Abstract

The utility model discloses a multi-electrode vortex street flow sensor which comprises a shell and a fixed pipe fixedly installed at the top of the shell, wherein an anti-interference sensor is arranged at the bottom of an inner cavity of the fixed pipe, the bottom end of the anti-interference sensor sequentially penetrates through the fixed pipe and the shell and extends into the shell, a sensor compression nut is arranged in the inner cavity of the fixed pipe and positioned at the top of the anti-interference sensor, the anti-interference sensor comprises a first metal electrode and a second metal electrode, and the utility model relates to the technical field of vortex street flow sensors. This multi-electrode vortex street flow sensor because be coaxial distribution between metal electrode one and the metal electrode two, through insulating boot one down, insulating boot two and last insulating boot can completely cut off the unstable or stray electric charge that the flowmeter shell exists, avoids stray electric charge to influence the sensor and normally works, strengthens flow signal's stability and the precision of measurement effectively, and then has improved the practicality of device.

Description

Multi-electrode vortex street flow sensor

Technical Field

The utility model relates to the technical field of vortex street flow sensors, in particular to a multi-electrode vortex street flow sensor.

Background

The vortex street flow sensor is a speed type flow meter which is manufactured by using a natural vibration principle of fluid and taking a piezoelectric crystal or a differential capacitor as a detection part according to a Karman vortex street theory. The device has the advantages of no movable part, large measurement range, wide medium adaptability, high measurement precision, long verification period, long signal transmission distance, small pressure loss, simple structure, reliable operation, long service life, convenient installation and maintenance and the like. The device can be widely applied to the process metering and energy-saving management of single-phase fluids such as various liquids, gases, steam and the like in the industries of petrochemical industry, metallurgical machinery, food, papermaking, urban pipeline heat supply, water supply, coal gas and the like.

The electromagnetic type vortex shedding flowmeter among the vortex shedding flowmeter is the flow instrument that uses Faraday electromagnetic induction principle to change flow signal into the signal of telecommunication, and this type of flowmeter often constitutes the flow signal return circuit with flowmeter metal measuring tube shell and single electrode transducer, owing to receive the complicated operating mode of use scene, survey factors such as buret shell ground connection irregularity, leads to surveying the buret shell and have unstable stray charge, and this charge is superimposed on normal flow signal, influences flow signal's stability and exactness. Therefore, the multi-electrode vortex street sensor is developed, so that the interference to normal signals can be effectively inhibited or eliminated, and accurate metering is guaranteed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a multi-electrode vortex street flow sensor, which solves the problems.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a multi-electrode vortex street flow sensor, includes casing and the fixed pipe of fixed mounting at the casing top, the bottom of fixed pipe inner chamber is provided with anti-interference sensor, the bottom of anti-interference sensor runs through fixed pipe and casing in proper order and extends to the inside of casing, the inner chamber of fixed pipe and the top that is located anti-interference sensor are provided with sensor gland nut, anti-interference sensor includes metal electrode one and metal electrode two, through an insulating boot fixed connection down between the internal surface of metal electrode one and the surface of metal electrode two, the surface of metal electrode one is provided with insulating boot two down, the top of metal electrode one surface is provided with the insulating boot.

Preferably, one side of the top of the first metal electrode is electrically connected with a first electrode signal output line, an outlet groove matched with the first electrode signal output line is arranged between one side of the top of the second metal electrode and one side of the upper insulating cover, and the top of the second metal electrode is electrically connected with a second electrode signal output line.

Preferably, the inner cavity of the fixed pipe is fixedly connected with upper magnetic steel between the top of the anti-interference sensor and the bottom of the sensor compression nut.

Preferably, the middle part of the top of the shell is fixedly connected with a connecting pipe, and the top of the inner cavity of the connecting pipe is fixedly connected with lower magnetic steel matched with the upper magnetic steel.

Preferably, one end of the outer surface of the shell, which is communicated with the water inlet, is fixedly connected with a first sealing ring.

Preferably, one end of the outer surface of the shell, which is communicated with the water outlet, is fixedly connected with a second sealing ring.

Advantageous effects

The utility model provides a multi-electrode vortex street flow sensor. Compared with the prior art, the method has the following beneficial effects:

(1) this multi-electrode vortex street flow sensor, through the casing, the fixed tube, anti-interference sensor, sensor gland nut, metal electrode one, metal electrode two, insulating boot one down, insulating boot two sets up with the cooperation of last insulating boot down, because be coaxial distribution between metal electrode one and the metal electrode two, through insulating boot one down, insulating boot two and last insulating boot can completely cut off the unstable stray charge that the flowmeter shell exists down, avoid stray charge to influence the normal work of sensor, strengthen flow signal's stability and the precision of measurement effectively, and then improved the practicality of device.

(2) This multi-electrode vortex street flow sensor, through an electrode signal output line, the wire outlet groove, two electrode signal output lines, go up the magnet steel, the connecting pipe sets up with the cooperation of magnet steel down, use through the cooperation of last magnet steel with magnet steel down, produce magnetic field when the water process, and then make metal electrode one and metal electrode two all be in same fluid, so have the same basic electric potential, can restrain the interfering signal who exists in the fluid effectively, and then strengthened the accuracy of device measurement, the practicality of device has further been improved.

Drawings

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

FIG. 2 is a schematic structural connection diagram of a first metal electrode, a second metal electrode and a first lower insulating cover according to the present invention;

FIG. 3 is an enlarged view of the utility model at A in FIG. 1.

In the figure: 1. a housing; 2. a fixed tube; 3. an anti-interference sensor; 4. a sensor compression nut; 5. a first metal electrode; 6. a second metal electrode; 7. a first lower insulating cover; 8. a second lower insulating cover; 9. an upper insulating cover; 10. an electrode-signal output line; 11. an outlet groove; 12. a second electrode signal output line; 13. magnetic steel is arranged; 14. a connecting pipe; 15. a lower magnetic steel; 16. a first seal ring; 17. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a multi-electrode vortex street flow sensor comprises a shell 1 and a fixed tube 2 fixedly installed at the top of the shell 1, wherein an anti-interference sensor 3 is arranged at the bottom of an inner cavity of the fixed tube 2, the bottom end of the anti-interference sensor 3 sequentially penetrates through the fixed tube 2 and the shell 1 and extends into the shell 1, a sensor gland nut 4 is arranged in the inner cavity of the fixed tube 2 and positioned at the top of the anti-interference sensor 3, the anti-interference sensor 3 comprises a first metal electrode 5 and a second metal electrode 6, the first metal electrode 5 is electrically connected with an external power supply and is controlled by a control switch, the inner surface of the first metal electrode 5 is fixedly connected with the outer surface of the second metal electrode 6 through a first lower insulating cover 7, the second metal electrode 6 is electrically connected with the external power supply and is controlled by the control switch, a second lower insulating cover 8 is arranged on the outer surface of the first metal electrode 5, and an upper insulating cover 9 is arranged at the top of the outer surface of the first metal electrode 5, because the first metal electrode 5 and the second metal electrode 6 are coaxially distributed, unstable stray charges existing in the flowmeter shell can be isolated through the lower insulating cover 7, the lower insulating cover two 8 and the upper insulating cover 9, the influence of the stray charges on the normal work of the sensor is avoided, the stability of flow signals and the metering precision are effectively enhanced, and the practicability of the device is further improved.

Furthermore, one side of the top of the first metal electrode 5 is electrically connected with a first electrode signal output line 10, the first electrode signal output line 10 is electrically connected with an external power supply and is controlled by a control switch, an outlet groove 11 matched with the first electrode signal output line 10 is arranged between one side of the top of the second metal electrode 6 and one side of the upper insulating cover 9, the top of the second metal electrode 6 is electrically connected with a second electrode signal output line 12, and the second electrode signal output line 12 is electrically connected with the external power supply and is controlled by the control switch.

Further, the inner cavity of the fixing tube 2 is fixedly connected with upper magnetic steel 13 between the top of the anti-interference sensor 3 and the bottom of the sensor compression nut 4.

Further, the middle part fixedly connected with connecting pipe 14 at 1 top of casing, the top fixedly connected with of the inner chamber of connecting pipe 14 and the lower magnet steel 15 of last magnet steel 13 looks adaptation, use through the cooperation of last magnet steel 13 with lower magnet steel 15, produce the magnetic field when the water process, and then make metal electrode one 5 and metal electrode two 6 all be in same fluid, so have the same basic electric potential, can restrain the interfering signal who exists in the fluid effectively, and then strengthened the accuracy of device measurement, the practicality of device has further been improved.

Further, the first sealing washer 16 of one end fixedly connected with of casing 1 surface intercommunication water inlet can strengthen the leakproofness of device through first sealing washer 16, and then the measuring degree of accuracy of reinforcing device.

Furthermore, one end of the outer surface of the shell 1, which is communicated with the water outlet, is fixedly connected with a second sealing ring 17, so that the sealing performance of the device can be enhanced through the second sealing ring 17, and the measuring accuracy of the device is further enhanced.

And those not described in detail in this specification are well within the skill of those in the art.

During the use, at first communicate the one end of casing 1 inlet tube with the one end of water pipe, rivers are in through flowmeter casing 1, produce the magnetic field through last magnet steel 13 and lower magnet steel 15 when the water flows, the electric charge signal in the water is received and is transmitted to the computer to rethread metal electrode one 5 and metal electrode two 6, simultaneously through insulating boot one 7 down, unstable or stray electric charge keeps apart in the water of insulating boot two 8 and last insulating boot 9, and then guarantee the measuring precision of flowmeter.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a multi-electrode vortex street flow sensor, includes casing (1) and fixed tube (2) of fixed mounting at casing (1) top, its characterized in that: the bottom of fixed pipe (2) inner chamber is provided with anti-interference sensor (3), the bottom of anti-interference sensor (3) runs through fixed pipe (2) and casing (1) in proper order and extends to the inside of casing (1), the inner chamber of fixed pipe (2) and the top that is located anti-interference sensor (3) are provided with sensor gland nut (4), anti-interference sensor (3) are including metal electrode one (5) and metal electrode two (6), through insulating boot one (7) fixed connection down between the internal surface of metal electrode one (5) and the surface of metal electrode two (6), the surface of metal electrode one (5) is provided with insulating boot two (8) down, the top of metal electrode one (5) surface is provided with insulating boot (9).

2. A multi-electrode vortex shedding flow sensor according to claim 1, wherein: one side electric connection at the top of metal electrode (5) has electrode one signal output line (10), be provided with between one side at metal electrode two (6) top and one side of last insulating boot (9) with the outlet groove (11) of electrode one signal output line (10) looks adaptation, the top electric connection of metal electrode two (6) has electrode two signal output line (12).

3. A multi-electrode vortex shedding flow sensor according to claim 1, wherein: the inner cavity of the fixed pipe (2) is located between the top of the anti-interference sensor (3) and the bottom of the sensor compression nut (4), and the upper magnetic steel (13) is fixedly connected with the inner cavity of the fixed pipe.

4. A multi-electrode vortex shedding flow sensor according to claim 3, wherein: the middle part fixedly connected with connecting pipe (14) at casing (1) top, the lower magnet steel (15) of top fixedly connected with and last magnet steel (13) looks adaptation of connecting pipe (14) inner chamber.

5. A multi-electrode vortex shedding flow sensor according to claim 1, wherein: one end of the outer surface of the shell (1) communicated with the water inlet is fixedly connected with a first sealing ring (16).

6. A multi-electrode vortex shedding flow sensor according to claim 1, wherein: one end of the outer surface of the shell (1) communicated with the water outlet is fixedly connected with a second sealing ring (17).

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