CN211147755U

CN211147755U - Cavitation-resistant device of glass rotameter

Info

Publication number: CN211147755U
Application number: CN201921705008.2U
Authority: CN
Inventors: 孙昕
Original assignee: Suzhou Industrial Park Liming Instrument Co ltd
Current assignee: Suzhou Industrial Park Liming Instrument Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-31
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to a glass rotameter technical field, and disclose a glass rotameter anti-cavitation erosion device, this glass rotameter anti-cavitation erosion device, through setting up the inducer, when the fluid gets into the casing through the pipeline, because the inducer is the heliciform setting, the fluid can drive the pivot rotatory, the velocity of flow of fluid has been reduced, the fluid after the inducer passes through the through-hole of seting up on the impeller, the resistance and the frictional loss of fluid have been increased, the velocity of flow of fluid medium through the through-hole has been reduced, the fluid is dispersed into many bundles of fluids after passing through the through-hole, the fluid of mutual striking forms the torrent, the torrent makes the gas bubble that separates out in the fluid medium take place to break, avoid the bubble to get into the internal surface explosion of flow machine body, the destruction to internal of flow machine body has been reduced, the production of suppression cavitation; through the first magnet and the second magnet that set up repulsion each other, drive the support rotation for the pressure everywhere of casing inner wall is located evenly, thereby reaches the appearance that prevents the cavitation phenomenon.

Description

Cavitation-resistant device of glass rotameter

Technical Field

The utility model relates to a glass rotameter technical field specifically is a glass rotameter cavitation prevention device.

Background

The main measuring elements of the glass rotameter are a vertically mounted conical glass tube with a small lower part and a large upper part and a float which can move up and down in the glass tube. When fluid passes through the conical glass tube from bottom to top, a pressure difference is generated between the upper part and the lower part of the floater, and the floater rises under the action of the pressure difference. When the rising force, the buoyancy and viscous lifting force on the float are equal to the gravity of the float, the float is in a balanced position. Therefore, the fluid flow rate of the glass rotameter has a certain proportional relationship with the rising height of the floater, namely the flow area of the glass rotameter, and the position height of the floater can be used as a flow rate measurement.

Glass rotameter is when using, often link to each other with external pipe, the junction is sealed through the sealing washer, but the sealing washer is used for a long time or under temperature variation's influence, cause sealed not firm problem that leads to having gas to get into, and glass rotameter is when using, inside liquid flow is certain, consequently, the in-process pressure variation that is too fast at the velocity of flow makes the inside cavitation phenomenon that produces of glass rotameter, consequently, the in-process of long-term use, produce great damage to glass rotameter's inside, glass rotameter's life has been influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a glass rotameter anti-cavitation device possesses the appearance advantage that prevents the cavitation phenomenon, has solved the problem of above-mentioned problem.

(II) technical scheme

For the purpose of realizing the aforesaid appearance that prevents the cavitation, the utility model provides a following technical scheme: the cavitation-resistant device for the glass rotameter comprises a flowmeter body and a casing, wherein the flowmeter body is connected with the casing through a flange, one end of the casing, far away from the flowmeter body, is connected with a pipeline, the outer surface of the joint of the pipeline and the flowmeter body is provided with a rubber sealing ring, the outer surface of the rubber sealing ring is provided with a group of telescopic rods, the outer surface of each telescopic rod is sleeved with a spring, one end of each telescopic rod, far away from the sealing ring, is fixedly connected with a mounting ring, the inside of the casing is rotatably connected with a rotating shaft through a bearing seat, the outer surface of the rotating shaft is fixedly connected with an inducer, the outer surface of the rotating shaft is sleeved with an impeller, the impeller is positioned below the inducer, the outer surface of the rotating shaft is fixedly connected with a mounting sleeve, the mounting sleeve is positioned below the, two the support is kept away from the first magnet of fixedly connected with of installation cover, two second magnets of inner wall fixedly connected with of casing, two the second magnet about installation cover symmetric distribution, first porcelain body with the second magnet is the homopolar.

Preferably, the number of the telescopic rods is not less than four, and the telescopic rods are arranged on the outer surface of the sealing ring in an annular array.

Preferably, the inducer is spirally welded on the outer surface of the rotating shaft.

Preferably, the outer surface of the impeller is provided with a group of through holes, the through holes are uniformly distributed on the outer surface of the impeller, and the number of the through holes is not less than four.

Preferably, the support is in a diamond shape, and the support and the mounting sleeve are welded.

Preferably, the first magnet is strip-shaped, and the second ceramic body is arc-shaped and is matched with the casing.

(III) advantageous effects

Compared with the prior art, the utility model provides a glass rotameter cavitation prevention device possesses following beneficial effect:

(1) this glass rotameter cavitation prevention device, through setting up the telescopic link, when using, the telescopic link makes the junction of rubber circle and casing and pipeline closely laminate under the effort of spring deformation, has solved rubber seal and has expanded with heat and contract with cold easily under the influence of temperature, takes place deformation and leads to sealed not firm problem to reach the effect that improves the device leakproofness.

(2) The cavitation-resistant device of the glass rotameter is characterized in that the inducer is arranged, when fluid enters the casing through the pipeline, the inducer is spirally arranged, the fluid can drive the rotating shaft to rotate, the flow velocity of the fluid is reduced, the fluid passing through the inducer passes through the through hole formed in the impeller, the resistance and the friction loss of the fluid are increased, the flow velocity of a fluid medium passing through the through hole is reduced, the fluid is dispersed into a plurality of beams of fluid after passing through the through hole, the fluid colliding with each other forms a turbulent flow, a buffer area and a pressure recovery area are formed, the turbulent flow enables gas bubbles separated out from the fluid medium to break at the position far away from the surface of a metal part, the bubbles are prevented from exploding when entering the surface of an internal part of a flow machine body, the damage to the internal part of the flow machine body is reduced; through the first magnet and the second magnet that set up repulsion each other, drive the support rotation, drive the fluid rotational speed in the casing for the pressure everywhere of casing inner wall is located evenly, thereby reaches the appearance that prevents the cavitation phenomenon.

Drawings

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

fig. 2 is a schematic top view of the mounting ring of the present invention;

fig. 3 is a schematic side view of the mounting sleeve of the present invention.

In the figure: the flowmeter comprises a flowmeter body 1, a casing 2, a pipeline 3, a rubber sealing ring 4, an expansion rod 5, a spring 6, a mounting ring 7, a rotating shaft 8, an inducer 9, a through hole 10, an impeller 11, a mounting sleeve 12, a support 13, a first magnet 14 and a second magnet 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an anti-cavitation device for a glass rotameter comprises a meter body 1 and a casing 2, wherein the meter body 1 is connected with the casing 2 through a flange, one end of the casing 2, which is far away from the meter body 1, is connected with a pipeline 3, the outer surface of the joint of the pipeline 3 and the meter body 1 is provided with a rubber sealing ring 4, the outer surface of the rubber sealing ring 4 is provided with a set of telescopic rods 5, the outer surface of each telescopic rod 5 is sleeved with a spring 6, one end of each telescopic rod 5, which is far away from the sealing ring 4, is fixedly connected with a mounting ring 7, the inside of the casing 2 is rotatably connected with a rotating shaft 8 through a bearing seat, the outer surface of the rotating shaft 8 is fixedly connected with an inducer 9, the outer surface of the rotating shaft 8 is sleeved with an impeller 11, the impeller 11 is positioned below the inducer 9, the outer surface of the rotating, two supports 13 keep away from the first magnet 14 of fixedly connected with of installation cover 12, and the inner wall fixedly connected with of casing 2 has two second magnets 15, and two second magnets 15 are about installation cover 12 symmetric distribution, and first porcelain body 14 is the homopolar with second magnet 15.

Furthermore, the number of the telescopic rods 5 is not less than four, and the telescopic rods 5 are annularly arrayed on the outer surface of the sealing ring 4, so that the stress of the rubber sealing ring 4 is uniform, and the effect of improving the sealing performance is achieved.

Furthermore, inducer 9 is the heliciform welding and is in the surface of the pivot 8 that rotates, through welded connected mode, has improved the job stabilization nature of device.

Furthermore, a group of through holes 10 are formed in the outer surface of the impeller 11, the through holes 10 are uniformly distributed on the outer surface of the impeller 11, the number of the through holes 10 is not less than four, the resistance and the friction loss of fluid are increased, and the flow velocity of a fluid medium passing through the through holes 10 is reduced.

Furthermore, the support 13 is in a diamond shape, so that the flow guiding effect is achieved, the support 13 and the mounting sleeve 12 are welded, and the working stability of the device is improved.

Furthermore, the first magnet 14 is strip-shaped, the second ceramic body 15 is arc-shaped, and is matched with the casing 2 to drive the bracket 13 to rotate, so as to drive the fluid rotating speed in the casing 2, and thus the pressure intensity of the inner wall of the casing 2 is uniform everywhere.

To sum up, this glass rotameter cavitation erosion prevention device through setting up telescopic link 5, when using, telescopic link 5 makes rubber ring 4 closely laminate with casing 2 and pipeline 3's junction under the effort of spring 6 deformation, has solved rubber seal 4 and has expanded with heat and contract with cold easily under the influence of temperature, takes place deformation and leads to the not firm problem of sealing to reach the effect that improves the device leakproofness.

According to the cavitation-resistant device for the glass rotameter, the inducer 9 is arranged, when fluid enters the casing 1 through the pipeline 3, the inducer 9 is spirally arranged, the fluid can drive the rotating shaft 8 to rotate, the flow velocity of the fluid is reduced, the fluid after passing through the inducer 9 passes through the through hole 10 formed in the impeller 11, the resistance and the friction loss of the fluid are increased, the flow velocity of the fluid medium passing through the through hole 10 is reduced, the fluid is dispersed into a plurality of beams of fluid after passing through the through hole 10, the fluid which mutually collides forms a turbulent flow, a buffer area and a pressure recovery area are formed, the turbulent flow enables gas bubbles separated out from the fluid medium to break at the position far away from the surface of a metal part, the bubbles are prevented from exploding when entering the surface of an internal part of the flow machine body 1, the damage to the internal part of the flow machine body 1 is reduced; the bracket 13 is driven to rotate by the first magnet 14 and the second magnet 15 which are mutually repulsive, so that the rotating speed of the fluid in the machine shell 2 is driven, the pressure intensity of the inner wall of the machine shell 2 is uniform everywhere, and the cavitation erosion phenomenon is prevented.

It is to be noted that 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a glass rotameter cavitation prevention device, includes flowmeter body (1) and casing (2), its characterized in that: the flowmeter comprises a flowmeter body (1) and a casing (2) which are connected through flanges, wherein one end of the flowmeter body (1) far away from the casing (2) is connected with a pipeline (3), the outer surface of the joint of the pipeline (3) and the flowmeter body (1) is provided with a rubber sealing ring (4), the outer surface of the rubber sealing ring (4) is provided with a set of telescopic rod (5), the outer surface of the telescopic rod (5) is sleeved with a spring (6), one end of the telescopic rod (5) far away from the sealing ring (4) is fixedly connected with a mounting ring (7), the inside of the casing (2) is rotatably connected with a rotating shaft (8) through a bearing seat, the outer surface of the rotating shaft (8) is fixedly connected with an inducer (9), the outer surface of the rotating shaft (8) is sleeved with an impeller (11), and the impeller (11) is, the utility model discloses a rotor blade of motor, including casing (2), the outer fixed surface of pivot (8) is connected with installation cover (12), installation cover (12) are located the below of impeller (11), the outer fixed surface of installation cover (12) is connected with support (13) of two symmetries, two support (13) are kept away from the first magnet (14) of fixedly connected with of installation cover (12), two second magnet (15) of inner wall fixedly connected with of casing (2), two second magnet (15) about installation cover (12) symmetric distribution, first magnet (14) with second magnet (15) are the same sex.

2. The anti-cavitation device of a glass rotameter as set forth in claim 1, wherein: the number of the telescopic rods (5) is not less than four, and the telescopic rods (5) are arranged on the outer surface of the sealing ring (4) in an annular array.

3. The anti-cavitation device of a glass rotameter as set forth in claim 1, wherein: the inducer (9) is spirally welded on the outer surface of the rotating shaft (8).

4. The anti-cavitation device of a glass rotameter as set forth in claim 1, wherein: a group of through holes (10) are formed in the outer surface of the impeller (11), the through holes (10) are evenly distributed in the outer surface of the impeller (11), and the number of the through holes (10) is not less than four.

5. The anti-cavitation device of a glass rotameter as set forth in claim 1, wherein: the support (13) is in a diamond shape, and the support (13) and the mounting sleeve (12) are welded.

6. The anti-cavitation device of a glass rotameter as set forth in claim 1, wherein: the first magnet (14) is long and the second magnet (15) is arc-shaped and is matched with the shell (2).