CN212539284U

CN212539284U - Turbine and flowmeter

Info

Publication number: CN212539284U
Application number: CN202021289568.7U
Authority: CN
Inventors: 高善旺
Original assignee: Jiangmen Hehua Intelligent Technology Co ltd
Current assignee: Dongguan Flow Meter Co.,Ltd.
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-02-12
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a turbine and flowmeter, include: the first body is provided with a first shaft, a first blade positioned in the radial direction of the first shaft and a first cavity positioned on the end face of the first blade; a magnet disposed in the first chamber; and the second body is fixed with the first body and is provided with a second shaft coaxial with the first shaft and a second blade which is attached to and fixes the magnet with the first blade. The utility model discloses a turbine and flowmeter, location and sealed magnet that can be good avoid the magnet to be corroded, ensure that flowmeter measuring result is stable, and accurate, reliable.

Description

Turbine and flowmeter

Technical Field

The utility model relates to a fluid measurement equipment, in particular to turbine and flowmeter.

Background

A flow meter is a device applied to fluid measurement. The structure of a common flow meter in the market at present is as follows: the device comprises a flow passage, a turbine positioned in the flow passage, a preamplifier, a signal receiver and a reading display. When the flow meter is used, fluid passes through the flow channel, so that the fluid drives the turbine to rotate, meanwhile, the magnet arranged on the turbine and the turbine rotate synchronously, so that the magnetic field changes, further, the rotating speed of the turbine is obtained by detecting the change of the magnetic field, and then, the related conversion is carried out, so that the flow of the fluid is obtained, wherein the unit is cubic meter per second.

However, in practical use, the magnet is easily corroded by fluid, and particularly, the application in the fields of chemical engineering and the like is serious.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a turbine and flowmeter, sealed magnet that can be good avoids the magnet to be corroded.

The utility model discloses a realize through following technical scheme:

the utility model discloses a first aspect provides a turbine, include: the first body is provided with a first shaft, a first blade positioned in the radial direction of the first shaft and a first cavity positioned on the end face of the first blade; a magnet disposed in the first chamber; and the second body is fixed with the first body and is provided with a second shaft coaxial with the first shaft and a second blade which is attached to and fixes the magnet with the first blade.

According to the utility model discloses a turbine of first aspect, the magnet is cylindricly, the axis of magnet is followed the radial direction setting of primary shaft.

According to the utility model discloses a turbine of first aspect, the second blade is provided with the second chamber, first chamber with second chamber cooperation location the magnet.

According to the utility model discloses a turbine of first aspect, the primary shaft with be provided with axial region and holding between the secondary shaft the hole of axial region, the internal surface of hole with be provided with location arch and holding between the surface of axial region the bellied positioning groove in location.

According to the first aspect of the present invention, the hole portion penetrates both ends of the body.

According to the utility model discloses a turbine of first aspect, the axial region is provided with the centre bore that runs through affiliated body.

According to the utility model discloses an aspect a turbine, first body sets up the axial region, the terminal surface of first body is provided with the protruding circle of welding usefulness, first chamber set up in the inboard of protruding circle.

According to the utility model discloses a turbine of first aspect, first body or the terminal surface of this body of second is provided with the protruding circle of welding usefulness, first chamber set up in the inboard of protruding circle.

According to the utility model discloses an aspect a turbine, the inboard of protruding circle is provided with the splice bar, the splice bar with arrange in the region that the protruding circle encloses first chamber.

A second aspect of the present invention provides a flow meter, including a turbine according to any one of the above aspects.

Has the advantages that: compared with the prior art, the utility model discloses a turbine and flowmeter is through setting up first body and second body to, make first body and second body together fixed, thereby, the mode that utilizes first body and second body laminating is sealed with the magnet, avoids fluid contact and corruption magnet, ensures the reliable, accurate measurement of flowmeter.

And simultaneously, the utility model discloses a turbine and flowmeter is through setting up first body and second body to, form first chamber installation magnet earlier, make magnet location accurate, installation deviation little, the magnetic field intensity response is stable, improves measurement accuracy.

In addition, still through setting up first chamber at the terminal surface of first blade to, in the use, the radial skew of taking place of first blade can not followed to the magnet, and then, the flowmeter obtains stable signal, has improved the reliability of flowmeter.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Reference numerals: 100-first body, 110-first shaft, 120-first blade, 130-first cavity, 140-magnet, 150-second body, 160-second shaft, 170-second blade, 180-second cavity, 190-shaft part, 200-hole part, 210-positioning projection, 220-positioning groove, 230-central hole, 240-convex ring and 250-connecting rib.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The present invention is directed to an embodiment of a flow meter, or a turbine flow meter, and more specifically to a turbine, impeller or rotor of a flow meter, hereinafter referred to as a turbine.

Referring to fig. 1 and 2, the turbine mainly has a first body 100 and a second body 150 made of plastic, wherein the first body 100 and the second body 150 are arranged along an axial direction of the turbine.

Specifically, the first body 100 has a first shaft 110, a first vane 120 located in a radial direction of the first shaft 110, and a first cavity 130 located at an end surface of the first vane 120.

Referring to fig. 1 and 2, the number of the first blades 120 is three, but may be increased or decreased according to actual needs.

The end surface of the first blade 120 is a surface in the axial direction of the first shaft 110, and does not mean a distal end surface of the first blade 120 away from the first shaft 110, and of course, the end surface of the first blade 120 is not required to be perpendicular to the axis of the first shaft 110.

Referring to fig. 1 and 2, the drawings illustrate a case where an end surface of the first blade 120 is perpendicular to an axis of the first shaft 110, thereby facilitating manufacturing.

Referring to fig. 2, the second body 150 is similar to the first body 100, and includes a second shaft 160 coaxial with the first shaft 110 and a second blade 170 attached to the first blade 120 to fix the magnet 140.

In order to fix the first body 100 and the second body 150 together, a seal ring and a bolt may be used, or they may be bonded.

In consideration of the shape, thickness, and manufacturing difficulty of the first and

second blades

120 and 170, it is preferable that the first and

second bodies

100 and 150 are welded and fixed.

Among the welding methods, ultrasonic welding is preferable, and thus, in use, it is not easily deteriorated by aging.

To perform the function of the flowmeter, magnets 140 are further disposed between the first body 100 and the second body 150, and as shown, the number of magnets 140 is 3, and one magnet 140 is allocated to one blade.

Of course, the number of blades can be increased or decreased according to the design requirement.

Referring to fig. 2, the magnet 140 has a cylindrical shape, and the axis of the magnet 140 is disposed in the radial direction of the first shaft 110, so that, preferably, both poles of the magnet 140 are disposed in the radial direction of the turbine, so that the flowmeter measurement is accurate.

Referring to fig. 2, in order to accurately fix the magnet 140, the second blade 170 may be provided with a second cavity 180, and the first and

second cavities

130 and 180 cooperate to position the magnet 140.

Thus, the area to which the magnet 140 is attached can be increased, and the movement of the magnet 140 can be prevented.

In order to accurately assemble the first body 100 and the second body 150, a shaft portion 190 and a hole portion 200 receiving the shaft portion 190 may be provided between the first shaft 110 and the second shaft 160, and a positioning protrusion 210 and a positioning groove 220 receiving the positioning protrusion 210 may be provided between an inner surface of the hole portion 200 and an outer surface of the shaft portion 190.

Referring to fig. 2, a shaft portion 190 is provided on a first shaft 110, a hole portion 200 is provided on a second shaft 160, a positioning projection 210 is provided on the shaft portion 190, and a positioning groove 220 is provided on the hole portion 200.

Of course, equivalent alternatives are possible, such as the shaft portion 190 being provided on the second shaft 160, the hole portion 200 being provided on the first shaft 110, the positioning projection 210 being provided on the shaft portion 190, and the positioning groove 220 being provided on the hole portion 200.

Alternatively, the shaft portion 190 is provided on the second shaft 160, the hole portion 200 is provided on the first shaft 110, the positioning boss 210 is provided on the hole portion 200, and the positioning recess 220 is provided on the shaft portion 190.

As is apparent from the solution of fig. 2, the volume of the positioning protrusion 210 and the positioning groove 220 can be reduced, which facilitates the manufacture and, at the same time, avoids reducing the strength of the first body 100 and the second body 150.

In some preferred embodiments, the hole parts 200 may penetrate both ends of the body.

Therefore, the flowmeter is assembled by the hole 200, the use of the hole 200 is expanded, and the turbine structure is made compact.

In some preferred embodiments, the shaft portion 190 may be provided with a central bore 230 through the body.

Similarly, the central bore 230 is utilized for assembly of the flowmeter.

Due to manufacturing reasons, there may be a gap between the shaft portion 190 and the hole portion 200, and thus, a stepped shaft may be provided such that the stepped shaft is inserted into the central hole 230 and the hole portion 200, such that the first shaft 110 and the second shaft 160 are concentrically fixed, thereby reducing misalignment between the first blade 120 and the second blade 170, providing a smooth transition between the first blade 120 and the second blade 170, and reducing an influence of manufacturing or assembling factors on measurement.

In some preferred embodiments, the first body 100 may be provided with the shaft portion 190, the end surface of the first body 100 is provided with a convex ring 240 for welding, and the first cavity 130 is disposed inside the convex ring 240.

That is, when the ultrasonic welding is performed, the bead 240 melts to weld the first body 100 and the second body 150 together.

Thus, it is possible to fix both the first body 100 and the second body 150, and also to avoid reducing the overall height of the first body 100 and the second body 150, so that the size of the turbine is satisfactory, while at the same time, since only the collar 240 needs to be melted, the energy consumption is low and the cost is dominant.

Of course, the second body 150 may be provided with the convex ring 240 without difficulty.

In some preferred embodiments, the inner side of the bead 240 may be provided with a connecting rib 250, and the first cavity 130 is disposed in an area enclosed by the connecting rib 250 and the bead 240.

Therefore, a small sealing ring is formed, the sealing reliability is improved, and the two rings of convex rings 240 are not required to be arranged, so that the turbine has a compact structure and is beneficial to miniaturization.

Thus, the present embodiment has the following effects:

1. in the embodiment, the first body 100 and the second body 150 are arranged, and the first body 100 and the second body 150 are fixed together, so that the magnet 140 is sealed by the way that the first body 100 is attached to the second body 150, the fluid is prevented from contacting and corroding the magnet 140, and the reliable and accurate metering of the flowmeter is ensured.

Excellent, avoid using glue, avoid the condition that the fluid corrodes magnet 140 after the glue drops to appear.

2. This embodiment is through setting up first body 100 and second body 150 to, form first chamber 130 earlier and install magnet 140, make magnet 140 location accurate, installation deviation little, the magnetic field intensity response is stable, improves measurement accuracy.

3. In the embodiment, the first cavity 130 is arranged on the end surface of the first blade 120, and the magnet 140 is prevented from being installed in the radial slot of the blade, so that the magnet 140 cannot be shifted along the radial direction of the first blade 120 in the use process, and further, the flowmeter obtains stable signals, and the reliability of the flowmeter is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A turbine, comprising:

a first body (100) having a first axis (110), a first vane (120) located radially of the first axis (110), a first cavity (130) located at an end face of the first vane (120);

a magnet (140) disposed in the first cavity (130);

and a second body (150) fixed to the first body (100), the second body having a second shaft (160) coaxial with the first shaft (110), and a second blade (170) which is bonded to the first blade (120) and fixes the magnet (140).

2. A turbine according to claim 1, wherein the magnets (140) are cylindrical, the axis of the magnets (140) being arranged in a radial direction of the first shaft (110).

3. A turbine according to claim 1 or 2, wherein the second blade (170) is provided with a second cavity (180), the first cavity (130) and the second cavity (180) cooperating to locate the magnet (140).

4. A turbine according to claim 1, wherein a shaft portion (190) and a hole portion (200) accommodating the shaft portion (190) are provided between the first shaft (110) and the second shaft (160), and a positioning projection (210) and a positioning groove (220) accommodating the positioning projection (210) are provided between an inner surface of the hole portion (200) and an outer surface of the shaft portion (190).

5. A turbine according to claim 4, characterized in that said holes (200) penetrate both ends of said body.

6. A turbine according to claim 4 or 5, characterised in that the shaft part (190) is provided with a central bore (230) through the body.

7. Turbine according to claim 4, wherein the first body (100) is provided with the shaft part (190), the end face of the first body (100) is provided with a bead (240) for welding, and the first cavity (130) is provided inside the bead (240).

8. A turbine according to claim 1, characterized in that the end face of the first body (100) or the second body (150) is provided with a bead (240) for welding, the first cavity (130) being provided inside the bead (240).

9. Turbine according to claim 7 or 8, wherein the inner side of the collar (240) is provided with a connecting rib (250), and the first cavity (130) is arranged in the area enclosed by the connecting rib (250) and the collar (240).

10. A flow meter comprising a turbine according to any one of claims 1 to 9.