CN215639600U

CN215639600U - Hall flowmeter

Info

Publication number: CN215639600U
Application number: CN202121919178.8U
Authority: CN
Inventors: 黎航艺; 何瑞东; 苏翠云; 王志伟
Original assignee: Shenzhen Hero Laser Equipment Co ltd
Current assignee: Shenzhen Hero Laser Equipment Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-01-25
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a Hall flowmeter, which is used for measuring the flow of fluid and comprises a shell, a sliding mechanism and a Hall sensor, wherein an accommodating cavity is formed in the shell, the shell is also provided with an inlet and an outlet which are communicated with the accommodating cavity, the inlet and the outlet are oppositely arranged, the sliding mechanism is slidably arranged between the inlet and the outlet, the sliding mechanism divides the accommodating cavity into two non-communicated spaces, a magnetic part is also fixed on the sliding mechanism, the Hall sensor is fixed on the outer side of the accommodating cavity, and the Hall sensor and the magnetic part are correspondingly arranged; fluid flows into the accommodating cavity through the inlet to drive the sliding mechanism to move relative to the shell. The technical scheme of the utility model aims to prolong the service life of the Hall flowmeter.

Description

Hall flowmeter

Technical Field

The utility model relates to the technical field of flow metering equipment, in particular to a Hall flowmeter.

Background

The hall flowmeter can measure the flow of fluid such as liquid or gas. The existing hall flowmeter is generally provided with a magnetic rotor inside a pipeline, and a hall element is arranged outside the pipeline. When fluid flows through the magnetic rotor, the magnetic rotor rotates, the Hall element senses the change of a magnetic field and outputs a pulse signal, and the flow rate of the fluid is calculated by recording the pulse number output by the Hall element in unit time. If the Hall flowmeter needs to obtain higher flow accuracy, the magnetic rotor needs to rotate for a plurality of circles continuously, and the measurement time is prolonged, namely longer reaction time is needed. In addition, the hall flowmeter has the following defects that when the measured fluid is gas, the magnetic rotor cannot be lubricated, the rotating parts are easily damaged, and the service life of the hall flowmeter is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a Hall flowmeter and aims to prolong the service life of the Hall flowmeter.

In order to achieve the above object, the present invention provides a hall flowmeter for measuring a flow rate of a fluid, including:

the shell is internally provided with an accommodating cavity, the shell is also provided with an inlet and an outlet which are communicated with the accommodating cavity, and the inlet and the outlet are oppositely arranged;

the sliding mechanism is arranged between the inlet and the outlet in a sliding manner, divides the accommodating cavity into two disconnected spaces, and is also fixed with a magnetic part; and

the Hall sensor is fixed on the outer side of the accommodating cavity and is arranged corresponding to the magnetic part;

fluid flows into the accommodating cavity through the inlet to drive the sliding mechanism to move relative to the shell.

In an embodiment of the present invention, the sliding mechanism includes:

the sliding rod is fixed in the accommodating cavity and extends along the arrangement direction of the inlet and the outlet;

the sliding block is provided with a through hole, the sliding rod penetrates through the through hole so as to be connected with the sliding rod in a sliding mode, the peripheral wall of the sliding block is abutted against the inner wall surface of the accommodating cavity and divides the accommodating cavity into two non-communicated spaces, and the magnetic part is arranged on the side edge of the sliding block; and

the elastic piece is arranged on one side, deviating from the inlet, of the sliding block, and the elastic piece can drive the sliding block to move towards one side of the outlet.

In an embodiment of the present invention, the elastic member is a spring, the spring is sleeved on the surface of the sliding rod, and two ends of the spring are respectively abutted against the sliding block and a cavity wall of the accommodating cavity.

In an embodiment of the present invention, the sliding mechanism further includes an adjusting member, the adjusting member is movably connected to the sliding rod, the adjusting member is located on a side of the sliding block away from the flow inlet, two ends of the spring respectively abut against the spring and the adjusting member, and the adjusting member moves relative to the sliding rod to adjust a range of the spring.

In an embodiment of the present invention, a blind hole is further concavely disposed on a surface of the slider facing the inlet, a sliding rod is disposed in the through hole, and the blind hole is disposed corresponding to the inlet.

In an embodiment of the present invention, the number of the through holes is two, and the blind hole is located between the two through holes.

In an embodiment of the utility model, the housing is further provided with a mounting hole communicated with the accommodating cavity, one end of the sliding rod penetrates through the mounting hole and extends into the accommodating cavity, and the hall flowmeter further comprises a sealing element, wherein the sealing element is fixed on the surface of the sliding rod and is abutted against the side wall surface of the mounting hole.

In an embodiment of the present invention, the hall flowmeter further includes a main control board, the housing is further provided with a fixing groove, the main control board is disposed in the fixing groove, and the hall sensor is fixed to the main control board.

In an embodiment of the utility model, the housing is further provided with a relief hole communicated with the fixing groove.

In an embodiment of the utility model, the housing includes a base and a cover, the base and the cover are detachably connected and enclose to form the accommodating cavity, the flow inlet and the flow outlet are both disposed on the base, and the sliding mechanism is slidably fixed on the base.

The Hall flowmeter in the technical scheme of the utility model comprises a shell, a sliding mechanism and a Hall sensor. Wherein, the casing is inside to be equipped with and to hold the chamber and set up entry and export relatively, and slide mechanism is located between entry and the export to will hold the chamber and separate for the space of two non-intercommunications, the last magnetic part that still is fixed with of slide mechanism, the fixed chamber outside that holds of hall sensor, and correspond the setting with the magnetic part. When no fluid flows into the inlet, the magnetic part and the Hall flowmeter are arranged oppositely; when fluid flows into the containing cavity at the inlet, the containing cavity is divided into two non-communicated spaces by the sliding mechanism, and the pressure of the fluid after flowing in can drive the sliding mechanism to move and drive the magnetic part fixed on the sliding mechanism to move. At this time, the hall sensor can obtain the flow of the fluid flowing into the accommodating cavity by detecting the change of the magnetic force of the induction magnetic part. In the technical scheme of the utility model, the sliding mechanism is used for replacing a magnetic rotating part in the prior art to realize the detection of the fluid flow, the accurate flow can be obtained by detecting the sliding distance of the sliding mechanism, repeated tests are not required to be carried out on the rotating part for multiple times, the abrasion of a movable part is reduced, and the service life of the Hall flowmeter can be prolonged. Meanwhile, due to the fact that the technical scheme of the utility model can obtain better measuring precision without repeated testing, the detecting time is shortened, the Hall flowmeter can quickly obtain a testing result, and the reaction efficiency of the Hall flowmeter is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of one embodiment of a Hall flow meter according to the utility model;

FIG. 2 is a schematic diagram of the internal structure of the Hall flow meter of FIG. 1;

FIG. 3 is an exploded view of the Hall flow meter of FIG. 1;

fig. 4 is a cross-sectional view of a hall flowmeter of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Hall flowmeter	30	Sliding mechanism
10	Shell body	31	Sliding bar
				11	Base body	33	Sliding block
111	Inlet port	331	Blind hole
				113	An outlet	333	Through hole
114	Containing cavity	35	Elastic piece
				115	Fixing groove	36	Magnetic member
116	Mounting hole	37	Adjusting part
				117	Hole of stepping down	39	Sealing element
118	Sealing groove	40	Main control board
				13	Cover body	50	Joint

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a hall flow meter 100.

Referring to fig. 1 to 4, in an embodiment of the present invention, the hall flowmeter 100 is a hall flowmeter 100 provided in the present invention, for measuring a flow rate of a fluid, including:

the device comprises a shell 10, wherein a containing cavity 114 is formed inside the shell 10, the shell 10 is further provided with an inlet 111 and an outlet 113 which are communicated with the containing cavity 114, and the inlet 111 and the outlet 113 are oppositely arranged;

the sliding mechanism 30 is slidably arranged between the inlet 111 and the outlet 113, the sliding mechanism 30 divides the accommodating cavity 114 into two disconnected spaces, and a magnetic part 36 is further fixed on the sliding mechanism 30; and

a hall sensor (not labeled) fixed to the outer side of the accommodating cavity 114, the hall sensor being arranged corresponding to the magnetic member 36;

fluid flows into the accommodating cavity 114 through the inlet 111 to drive the sliding mechanism 30 to move relative to the housing 10.

The hall flowmeter 100 according to the present invention includes a housing 10, a slide mechanism 30, and a hall sensor. The housing 10 is provided therein with an accommodating chamber 114 and an inlet 111 and an outlet 113 disposed opposite to each other, the sliding mechanism 30 is located between the inlet 111 and the outlet 113 and divides the accommodating chamber 114 into two spaces that are not communicated, the sliding mechanism 30 is further fixed with a magnetic member 36, and the hall sensor is fixed outside the accommodating chamber 114 and disposed corresponding to the magnetic member 36. When no fluid flows into the inlet 111, the magnetic member 36 is opposite to the hall flowmeter 100; when fluid flows into the accommodating chamber 114 from the inlet 111, the accommodating chamber 114 is divided into two non-communicated spaces by the sliding mechanism 30, and the pressure of the fluid after flowing in can drive the sliding mechanism 30 to move and drive the magnetic element 36 fixed on the sliding mechanism 30 to move. At this time, the hall sensor detects a change in the magnetic force of the sensing magnetic member 36, and thus can obtain the flow rate of the fluid flowing into the accommodating chamber 114. In the technical scheme of the utility model, the sliding mechanism 30 is used for replacing a magnetic rotating part in the prior art to realize the detection of the fluid flow, the accurate flow can be obtained by detecting the sliding distance of the sliding mechanism 30, repeated tests are not required to be carried out on the rotating part for multiple times, the abrasion of a movable part is reduced, and the service life of the Hall flowmeter 100 can be prolonged. Meanwhile, due to the fact that the technical scheme of the utility model can obtain better measuring precision without repeated testing, the detection time is shortened, the Hall flowmeter 100 can quickly obtain a test result, and the reaction efficiency of the Hall flowmeter 100 is improved.

The fluids that can be tested by the hall flow meter 100 of the present invention include gases, liquids, and the like. The housing 10 includes a base 11 and a cover 13, and the base 11 and the cover 13 can be detachably connected by screws to mount the sliding mechanism 30 in the accommodating cavity 114, and also to facilitate maintenance of the components of the accommodating cavity 114 during use. Wherein, the seat body 11 is internally formed with an accommodating space, and the flow inlet 111 and the flow outlet 113 are both disposed on the seat body 11, so as to slidably mount the sliding mechanism 30 on the seat body 11. The cover 13 covers the seat 11 and forms a sealed accommodating cavity 114 with the seat 11. It can be understood that an alignment mechanism is further formed between the cover 13 and the base 11, and specifically, a sealing groove 118 is formed on the surface of the base 11, and a protruding rib (not shown) is convexly formed on the surface of the cover 13, and the protruding rib is inserted into the sealing groove 118. In order to improve the sealing performance of the housing 10, a sealing ring structure or the like may be provided between the cover 13 and the seat 11.

It is understood that, in order to facilitate fluid access, a connector 50 may be further provided on both the inlet 111 and the outlet 113 of the housing 11, so as to connect the hall flowmeter 100 with a conveying pipeline, so as to facilitate fluid access or fluid output.

The magnetic member 36 may be a permanent magnetic material, a soft magnetic material, or a piezomagnetic material, and the like, which is not limited herein. In one embodiment, the magnetic member 36 is a magnetic metal, such as electrical steel, nickel-based alloy, rare earth alloy, or ferrite material. The material of the magnetic member 36 is not specifically listed here. The hall sensor may sense a change in the magnetic force of the magnetic member 36 and detect the formation of the sliding mechanism 30 by sensing the change in the magnetic force.

Referring to fig. 2 to 4, in an embodiment of the present invention, the sliding mechanism 30 includes:

a sliding rod 31, wherein the sliding rod 31 is fixed in the accommodating cavity 114, and the sliding rod 31 extends along the arrangement direction of the inlet 111 and the outlet 113;

the sliding block 33, the sliding block 33 is provided with a through hole 333, the sliding rod 31 penetrates through the through hole 333, so that the sliding block 33 is connected to the sliding rod 31 in a sliding manner, the peripheral wall of the sliding block 33 is abutted against the inner wall surface of the accommodating cavity 114 and divides the accommodating cavity 114 into two non-communicated spaces, and the magnetic part 36 is arranged on the side edge of the sliding block 33; and

the elastic piece 35, the elastic piece 35 is arranged on the side of the sliding block 33 departing from the inlet 111, and the elastic piece 35 can drive the sliding block 33 to move towards the side of the outlet 113.

In the technical solution of an embodiment of the present invention, the sliding rod 31 may be an optical axis, an optical axis screw, or a pin. The slide bar 31 is used to fix the slider 33 and guide the movement of the slider 33. It is understood that the side wall surface of the slide bar 31 is as smooth as possible to reduce the sliding resistance of the slider 33 and improve the accuracy of the flow direction test. Specifically, the inner wall surface of the accommodating cavity 114 is further provided with a mounting hole 116 to facilitate fixing of the two ends of the sliding rod 31. In order to facilitate the installation of the sliding rod 31 and improve the installation efficiency, one of the installation holes 116 may be provided as a through hole 333, so that the sliding rod 31 may be inserted into the accommodation chamber 114 from the outside of the accommodation chamber 114. In this case, in order to ensure the sealing property of the housing chamber 114, the seal 39 may be fitted to the surface of the slide rod 31, and the seal 39 may be brought into contact with the surface of the slide rod 31 and the side wall surface of the mounting hole 116 to seal them, thereby preventing the fluid in the housing chamber 114 from flowing out through the mounting hole 116 and ensuring the accuracy of the flow rate test. The seal 39 may be an O-ring or a Y-ring. The material of the sealing member 39 may be rubber or silicone.

Further, in order to improve the stability of the sliding blocks 33 during the sliding process, each sliding block 33 is connected with two sliding rods 31, wherein the inlet 111 is located at the middle position of the two sliding rods 31, so that the fluid exerts a driving force on the sliding block 33 from the middle position, the force on the sliding block 33 is stable, the sliding can be ensured to be stable, and further, the accurate sliding distance is obtained.

The shape of the sliding block 33 is matched with the cross-sectional shape of the accommodating cavity 114, so that the accommodating cavity 114 is divided into two disconnected spaces, and the accuracy of the flow test is improved. In order to make the pressure of the fluid act on the sliding block 33 better, a blind hole 331 may be further provided at a position of the sliding block 33 facing the inlet 111, and the fluid passes through the inlet 111 and directly flows into the blind hole 331, and applies a vertical pushing force to the blind hole 331 to push the sliding block 33 to move in the accommodating cavity 114. It can be understood that, in order to balance the stress of the sliding block 33, the central axis of the blind hole 331 coincides with the central line of the sliding block 33, and the two sliding rods 31 are symmetrically disposed on two sides of the central line of the blind hole 331. It should be noted that the inner surface of the accommodating chamber 114 is further provided with a communicating groove structure, and the communicating groove structure can communicate two spaces of the accommodating chamber 114 after the slider 33 reaches the maximum range, so that the fluid can flow out through the outlet 113.

Further, the elastic component 35 is arranged on one side of the sliding block 33 departing from the inlet 111, and the elastic component 35 can drive the sliding block 33 to move towards one side of the outlet 113 after the flow test is finished, so that the sliding block 33 is driven to reset. Specifically, the elastic element 35 may be a spring, the spring is sleeved on the surface of the sliding rod 31, and two ends of the spring are respectively abutted against the sliding block 33 and the cavity wall of the accommodating cavity 114. When the slider 33 moves toward the outlet 113, the spring is compressed, and when no fluid flows in, the compression force of the spring is released, and the spring is driven to return. It is understood that the elastic member 35 may be an elastic plate or the like in addition to the spring, and the elastic member 35 is not illustrated here.

Referring to fig. 3 and 4, in an embodiment of the present invention, the sliding mechanism 30 further includes an adjusting member 37, the adjusting member 37 is movably connected to the sliding rod 31, the adjusting member 37 is located on a side of the sliding block 33 away from the flow inlet 111, two ends of the spring respectively abut between the spring and the adjusting member 37, and the adjusting member 37 moves relative to the sliding rod 31 to adjust a range of the spring.

In the technical solution of an embodiment of the present invention, the adjusting member 37 is an adjusting plate, the adjusting plate is fastened and fixed on a side wall surface of the sliding rod 31, correspondingly, a plurality of slots (not labeled) may be arranged at intervals on the side wall of the sliding rod 31, and the adjusting member 37 is fastened and fixed in the slots. The distance between the adjusting plate and the sliding block 33 is adjusted by inserting the adjusting plate into different clamping grooves, and then the range of the spring is adjusted.

Referring to fig. 3 and 4, in an embodiment of the present invention, the hall flowmeter 100 further includes a main control board 40, the housing 10 is further provided with a fixing groove 115, the main control board 40 is disposed in the fixing groove 115, and the hall sensor is fixed to the main control board 40.

In the technical solution of an embodiment of the present invention, the main control board 40 is provided with a circuit structure, so as to calculate the signal detected by the hall sensor, further obtain the flow rate, and output the measurement result. It will be appreciated that the fixing groove 115 is disposed closely adjacent to the receiving cavity 114 so that the hall sensor is disposed close to the magnetic member 36. In order to improve the stability of the main control panel 40, two opposite sidewalls of the fixing groove 115 are further provided with positioning grooves into which two opposite sides of the main control panel 40 are inserted. Further, the housing 10 is further provided with a relief hole 117 communicating with the fixing groove 115. The signal line connected to the main control board 40 passes through the escape hole 117 to output the detection signal.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A hall flowmeter for measuring a flow rate of a fluid, comprising:

2. The hall flow meter of claim 1 wherein the slide mechanism comprises:

3. The Hall flow meter according to claim 2, wherein said elastic member is a spring, said spring is sleeved on the surface of said sliding rod, and two ends of said spring are respectively abutted against said sliding block and the wall of said accommodating cavity.

4. The hall flowmeter of claim 3 wherein the slide mechanism further comprises an adjustment member, the adjustment member is movably connected to the slide bar, the adjustment member is located on a side of the slider away from the flow inlet, two ends of the spring are respectively abutted between the spring and the adjustment member, and the adjustment member moves relative to the slide bar to adjust the range of the spring.

5. The hall flowmeter of claim 2 wherein the surface of the slider facing the inlet is further recessed with a blind hole, the blind hole being disposed in correspondence with the inlet.

6. The Hall flow meter according to claim 5, wherein said number of through holes is two, one said through hole being provided with one said slide bar, said blind hole being located between two said through holes.

7. The hall flowmeter of claim 2, wherein the housing further comprises a mounting hole communicating with the accommodating cavity, one end of the slide rod extends into the accommodating cavity through the mounting hole, and the hall flowmeter further comprises a sealing member fixed to a surface of the slide rod and abutting against a side wall surface of the mounting hole.

8. The hall flowmeter of claim 1, further comprising a main control board, wherein the housing further comprises a fixing groove, the main control board is disposed in the fixing groove, and the hall sensor is fixed to the main control board.

9. The hall flowmeter of claim 8 wherein the housing further comprises a relief hole in communication with the retaining groove.

10. The hall flowmeter of any one of claims 1 to 9, wherein the housing comprises a base and a cover, the base and the cover are detachably connected and enclose to form the receiving cavity, the flow inlet and the flow outlet are both disposed on the base, and the sliding mechanism is slidably fixed to the base.