CN112629598A - Wing-type fan blade flowmeter - Google Patents

Abstract

The invention discloses an airfoil fan blade flowmeter, which relates to the technical field of flowmeters and comprises a valve body, a valve cover, an impeller, an angle sensor and an elastic pressure-bearing part, wherein the valve cover is arranged on the valve body; the impeller set up in the valve body, the impeller with angle sensor transmission is connected, elasticity bearing part set up in the edge of impeller with between the valve body inner wall. The impeller is in transmission connection with the angle sensor, fluid flows through the impeller to deflect the impeller, the deflection angle of the impeller is sensed through the angle sensor to sense the flow velocity of the fluid, the flow is further determined, the impeller does not rotate continuously in the measuring process, energy loss generated by the impeller is reduced, and therefore metering is more accurate; the angle sensor is connected with the valve body through the bolt, the impeller is connected with the angle sensor through the coupler, and therefore the impeller is convenient to detach and replace.

Description

Wing-type fan blade flowmeter

Technical Field

The invention relates to the technical field of flowmeters, in particular to an airfoil fan blade flowmeter.

Background

The liquid flowmeter is a precise flow measuring instrument, and can be used for measuring the flow and the total amount of liquid by being matched with a corresponding flow calculating instrument. The liquid flowmeter is widely used in metering and controlling systems in the fields of petroleum, chemical industry, metallurgy, scientific research and the like. The liquid flowmeter with the sanitary joint can be used in the pharmaceutical industry, the blade continuously rotates to increase the energy loss when the existing liquid turbine flowmeter is used for measurement, the impeller is inconvenient to disassemble and assemble, and once the impeller is damaged, the liquid turbine flowmeter needs to be integrally replaced, so that unnecessary loss is increased.

Disclosure of Invention

In order to solve the technical problems, the invention provides the airfoil fan blade flowmeter, which reduces energy loss caused by an impeller and is convenient to disassemble and assemble the impeller.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides an airfoil fan blade flowmeter, which comprises a valve body, a valve cover, an impeller, an angle sensor and an elastic pressure-bearing part, wherein the valve cover is arranged on the valve body; the impeller set up in the valve body, the impeller with angle sensor transmission is connected, elasticity bearing part set up in the edge of impeller with between the valve body inner wall.

Optionally, the impeller includes a fan blade shaft, a plurality of fan blades, and an annular ring; one end of each fan blade is connected with the outer wall of the fan blade shaft, and the other end of each fan blade is connected with the inner wall of the annular ring; the outer wall of the annular ring is provided with a limiting part extending outwards, the limiting part is connected with one end of the elastic pressure bearing part, and one end of the fan blade shaft is connected with the angle sensor.

Optionally, the valve body orientation the one end of valve gap is provided with the spacing groove, the impeller with elasticity pressure-bearing piece all set up in the spacing inslot, just elasticity pressure-bearing piece set up in the impeller spacing portion with between the side tip of spacing groove.

Optionally, the spacing groove includes two by the valve body tip 90 degrees sector grooves inwards sunken, two 90 degrees sector grooves are followed the circumference evenly distributed of valve body, spacing portion stretches into in the 90 degrees sector grooves, elasticity pressure-bearing piece set up in 90 degrees sector grooves with between the spacing portion.

Optionally, spacing portion includes the edge the outside extension portion that extends of annular ring and the joint portion that extension portion extended to one side, joint portion with the spacing connection of elasticity bearing part.

Optionally, the fan blade shaft is connected with the angle sensor through a coupling.

Optionally, an included angle between the plurality of fan blades and the fan blade shaft is 3 degrees.

Optionally, the fan blade is an airfoil.

Optionally, a rear support is arranged inside the valve body, and the angle sensor is detachably arranged on the rear support.

Compared with the prior art, the invention has the following technical effects:

according to the wing-type fan blade flowmeter, the impeller is in transmission connection with the angle sensor, fluid flows through the impeller to deflect the impeller, the deflection angle of the impeller is sensed through the angle sensor to sense the flow velocity of the fluid, the flow is further determined, the impeller does not rotate continuously in the measuring process, energy loss generated by the impeller is reduced, and therefore metering is more accurate; the angle sensor is connected with the valve body through the bolt, the impeller is connected with the angle sensor through the coupler, and therefore the impeller is convenient to detach and replace.

Drawings

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

FIG. 1 is a schematic view of an airfoil vane flow meter according to the present invention;

FIG. 2 is a schematic top view of an airfoil vane flow meter according to the present invention;

FIG. 3 is a schematic side view of an airfoil vane flow meter according to the present invention;

FIG. 4 is a schematic view of an overall cross-sectional structure of an airfoil vane flow meter of the present invention;

FIG. 5 is a schematic view of a connection structure between an impeller and an angle sensor in the airfoil vane flow meter according to the present invention;

FIG. 6 is a schematic cross-sectional view of an airfoil vane flow meter according to the present invention;

FIG. 7 is a schematic view of the structure of the impeller of the airfoil vane flow meter of the present invention;

FIG. 8 is a schematic sectional view of the impeller of the airfoil vane flow meter at the G-G position.

Description of reference numerals: 1. a valve cover; 2. a valve body; 3. displaying an instrument panel; 4. an on/off key; 5. a shift key; 6. a display screen; 7. an impeller; 8. an angle sensor; 9. a rubber plug; 10. rear support; 11. a first flat key; 12. a second flat key; 13. a first coupling; 14. a second coupling.

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.

As shown in fig. 1 to 6, the present embodiment provides an airfoil vane flowmeter, including a valve body 2, a valve cover 1, an impeller 7, an angle sensor 8 and an elastic pressure-bearing member; the impeller 7 set up in the valve body 2, impeller 7 with angle sensor 8 transmission is connected, elasticity bearing part set up in the edge of impeller 7 with between the 2 inner walls of valve body.

In this embodiment, the valve body 2 and the bonnet 1 are connected by screws.

The impeller 7 comprises four fan blades which are wing-shaped, when fluid flows through the fan blades, pressure difference exists between the surfaces of the two sides of the fan blades, so that a rotating force is generated, and the four fan blades are simultaneously stressed to enable the impeller to rotate; the contained angle between the adjacent flabellum is 90 degrees, and every flabellum has an contained angle with fluidic flow direction on along fluidic flow direction, through setting up the contained angle, can increase the revolving force, and this contained angle is 3 degrees in this embodiment. The one end of flabellum is connected with the front end of a flabellum axle, and the other end of flabellum is connected with the inner wall of an annular ring, follows centrosymmetric on the outer wall of annular ring to be provided with two spacing portions, and every spacing portion includes along the outside joint portion that extends of the outside extension of circumference of annular ring and the outside extension to one side.

The rear end of the fan blade shaft is connected with a first coupler 13 through a first flat key 11, the front end of the angle sensor 8 is connected with a second coupler 14 through a second flat key 12, and the first coupler 13 and the second coupler 14 are connected through bolts and nuts, so that the rotation of the fan blades can be directly transmitted to the angle sensor 8, and the fan blades can be conveniently detached and replaced.

For a smaller fluid flow rate, the number of fan blades can be increased, or the included angle can be changed.

The inside back support 10 that is provided with of valve body 2, angle sensor 8 detachable set up in on the back support 10. The rear support 10 is a support frame fixed inside the valve body 2 and used for supporting the angle sensor 8. The middle part of the rear support 10 is provided with a through mounting hole, the angle sensor 8 is arranged at the front end of the mounting hole, the rear end of the mounting hole is provided with a rubber plug, and the rubber plug is used for reducing the contact between fluid and the angle sensor 8, so that the erosion to the angle sensor 8 is reduced.

The elastic bearing part is a spiral spring.

The valve body 2 orientation the one end of valve gap 1 is provided with the spacing groove, the spacing groove include two by the inside sunken 90 degrees fan-shaped grooves of 2 tip of valve body, two 90 degrees fan-shaped grooves are followed the circumference evenly distributed of valve body 2, spacing portion stretches into in the 90 degrees fan-shaped grooves, elasticity pressure-bearing piece set up in 90 degrees fan-shaped grooves with between the spacing portion.

The impeller 7 with the elasticity pressure-bearing piece all set up in the spacing inslot, just the elasticity pressure-bearing piece set up in the impeller 7 spacing portion with between the side tip of spacing groove.

When fluid flows through the impeller 7, the fluid pushes the fan blades to enable the impeller 7 to overcome the elastic force of the spiral spring to deflect, when the elastic force of the spiral spring and the thrust of the fluid are balanced, the impeller 7 keeps a fixed position, and the deflection angle of the impeller 7 is measured through the angle sensor 8, so that the flow rate of the fluid can be converted.

Furthermore, a display instrument panel 3 is arranged at the top of the airfoil fan blade flowmeter, an on/off key 4, a conversion key 5 and a display screen 6 are arranged on the display instrument panel 3, and the display screen 6 is used for displaying the flow speed. The conversion key is used for the display conversion of the instantaneous flow and the average flow.

Due to the limited rotation range of the impeller 7, the spiral springs with different elastic coefficients can be selected according to the liquid flow speed range, so that the airfoil blade flow meter is suitable for a larger measurement range.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (9)

1. An airfoil fan blade flowmeter is characterized by comprising a valve body, a valve cover, an impeller, an angle sensor and an elastic pressure-bearing part; the impeller set up in the valve body, the impeller with angle sensor transmission is connected, elasticity bearing part set up in the edge of impeller with between the valve body inner wall.

2. The airfoil fan flow meter of claim 1, wherein said impeller includes a fan shaft, a plurality of fan blades, and an annular ring; one end of each fan blade is connected with the outer wall of the fan blade shaft, and the other end of each fan blade is connected with the inner wall of the annular ring; the outer wall of the annular ring is provided with a limiting part extending outwards, the limiting part is connected with one end of the elastic pressure bearing part, and one end of the fan blade shaft is connected with the angle sensor.

3. The airfoil fan blade flowmeter as claimed in claim 2, wherein a limiting groove is formed at an end of the valve body facing the valve cover, the impeller and the elastic bearing member are both disposed in the limiting groove, and the elastic bearing member is disposed between the limiting portion of the impeller and a side end portion of the limiting groove.

4. The airfoil fan flow meter according to claim 3, wherein the limiting groove comprises two 90-degree fan-shaped grooves recessed inward from the end of the valve body, the two 90-degree fan-shaped grooves are uniformly distributed along the circumferential direction of the valve body, the limiting portion extends into the 90-degree fan-shaped grooves, and the elastic bearing member is disposed between the 90-degree fan-shaped grooves and the limiting portion.

5. The airfoil fan blade flowmeter of claim 2, wherein the limiting portion comprises an outward extending portion extending outward along the annular ring and a clamping portion extending to one side of the outward extending portion, and the clamping portion is in limiting connection with the elastic bearing member.

6. The airfoil fan flow meter of claim 2, wherein the fan shaft is coupled to the angle sensor by a coupling.

7. The airfoil fan flow meter of claim 2, wherein an angle between said plurality of fan blades and said fan blade axis is 3 degrees.

8. The airfoil fan flow meter of claim 2, wherein said fan is an airfoil.

9. The airfoil fan blade flow meter of claim 1, wherein a back support is disposed within the valve body, and the angle sensor is removably disposed on the back support.

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