CN215524715U

CN215524715U - Inserted vortex shedding flowmeter capable of absorbing vibration

Info

Publication number: CN215524715U
Application number: CN202121816596.4U
Authority: CN
Inventors: 唐贤昭; 李洋
Original assignee: Jiangsu Wini Electronic Co ltd
Current assignee: Jiangsu Wini Electronic Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-14
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses an inserted vortex shedding flowmeter for absorbing vibration, which relates to the field of vortex shedding flowmeters and comprises an inserted steel pipe, wherein the inserted steel pipe consists of a lower connecting rod, a connecting pipe and an upper connecting rod which are concentric with a central shaft; the lower connecting rod and the upper connecting rod are communicated through the central through hole, the outer diameter of the lower connecting rod is smaller than the inner diameter of the connecting pipe, and rubber is filled in a gap between the connecting pipe and the lower connecting rod. According to the utility model, the rubber absorbs the vibration, so that the problem caused by the vibration of the insertion tube can be reduced, the measurement precision is improved, and the fracture risk is reduced.

Description

Inserted vortex shedding flowmeter capable of absorbing vibration

Technical Field

The utility model relates to the field of vortex street flowmeters, in particular to an insertion type vortex street flowmeter for absorbing vibration.

Background

At present, large-diameter pipelines often need to be subjected to flow detection in an industrial field, and a commonly used solution for flow measurement of the large pipelines is to use plug-in flow meters.

In the using process, the longer the plug-in flowmeter used correspondingly for the pipeline with the larger caliber is, the longer the cantilever beam is formed by the whole structure, the fluid in the pipeline cannot flow through the pipeline at a constant speed, the cantilever beam can vibrate under the acting force of the fluid, the measuring accuracy of the flowmeter is influenced, and the plug-in steel pipe can be broken more seriously to cause production accidents.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an insertion type vortex shedding flowmeter for absorbing vibration.

The utility model has the innovation points that the rubber absorbs the vibration, so that the problem caused by the vibration of the insertion tube can be reduced, the measurement precision is improved, and the fracture risk is reduced.

In order to realize the purpose of the utility model, the technical proposal of the utility model is as follows: an inserted vortex shedding flowmeter for absorbing vibration comprises an inserted steel pipe, wherein the inserted steel pipe consists of a lower connecting rod, a connecting pipe and an upper connecting rod which are concentric with a central shaft, the upper connecting rod is hermetically connected with the top of the connecting pipe, the lower connecting rod is inserted into the connecting pipe and extends to be close to the upper connecting rod, and the interface of the lower connecting rod and the connecting pipe is welded and sealed; the lower connecting rod and the upper connecting rod are communicated through the central through hole, the outer diameter of the lower connecting rod is smaller than the inner diameter of the connecting pipe, and rubber is filled in a gap between the connecting pipe and the lower connecting rod. According to the utility model, the rubber absorbs the vibration, so that the problem caused by the vibration of the insertion tube can be reduced, the measurement precision is improved, and the fracture risk is reduced.

Furthermore, the top of the connecting pipe is welded and sealed after the connecting rod is screwed on the top of the connecting pipe in a threaded manner. Prevent the screw thread from loosening, increase the connection rigidity.

Furthermore, a circle of convex ring is arranged at the position, close to the upper end, of the outer wall of the lower connecting rod, a counter bore for accommodating the convex ring is formed in the inner wall of the upper end opening of the connecting pipe, and the diameter of the counter bore is larger than that of the convex ring. The lower connecting rod is hung in the connecting pipe, and the lower connecting rod is prevented from falling.

Furthermore, a circle of groove is arranged on the inner wall of the connecting pipe close to the lower end face, and the wall thickness from the bottom of the groove to the lower end face of the connecting pipe is 0.5-1.5 mm. The rigidity of the connection between the small pipe and the lower connecting rod is reduced, and the vibration absorption efficiency is improved.

The utility model has the beneficial effects that:

1. according to the utility model, the rubber absorbs the vibration, so that the problem caused by the vibration of the insertion tube can be reduced, the measurement precision is improved, and the fracture risk is reduced.

2. According to the utility model, the rigidity of the connection between the small pipe and the lower connecting rod is reduced, and the vibration absorption efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1: as shown in fig. 1, an insertion type vortex shedding flowmeter for absorbing vibration comprises an insertion type steel pipe 1, wherein the insertion type steel pipe is composed of a lower connecting rod 1.1, a connecting pipe 1.2 and an upper connecting rod 1.3 which are concentric with a central shaft, the upper connecting rod 1.3 is hermetically connected with the top of the connecting pipe 1.2, the top of the connecting pipe 1.2 is welded and sealed after being screwed with the upper connecting rod 1.1, the lower connecting rod 1.1 is inserted into the connecting pipe and extends to be close to the upper connecting rod 1.3, and the joint of the lower connecting rod 1.1 and the connecting pipe 1.2 is welded and sealed; lower connecting rod 1.1 and upper connecting rod 1.3 central through hole just to the intercommunication, lower connecting rod 1.1 external diameter is less than connecting pipe 1.2 internal diameter, be filled with rubber 1.4 in the space between connecting pipe 1.2 and the lower connecting rod 1.1, the nearly upper end department of lower connecting rod 1.1 outer wall is equipped with round bulge loop 1.11, be equipped with the counter bore 1.21 that holds bulge loop 1.11 on the connecting pipe 1.2 upper end mouth inner wall, counter bore 1.21 diameter is greater than bulge loop diameter 1.11, the nearly lower terminal surface department of connecting pipe inner wall 1.2 is equipped with round recess 1.22, the wall thickness of recess 1.22 bottom to connecting pipe 1.2 lower terminal surface is 0.5 ~ 1.5 mm.

When the connecting pipe is installed, the lower connecting rod 1.1 and the rubber 1.4 are put into the connecting pipe 1.2 from the upper end, the convex ring 1.11 is placed in the counter bore 1.21, the joint of the lower connecting rod 1.1 and the connecting pipe 1.2 is welded, the upper connecting pipe 1.3 is screwed on the top of the connecting pipe 1.2, and then the welding and the sealing are carried out.

The described embodiments are only some embodiments of the utility model, not all 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.

Claims

1. An inserted vortex shedding flowmeter for absorbing vibration comprises an inserted steel pipe and is characterized in that the inserted steel pipe consists of a lower connecting rod, a connecting pipe and an upper connecting rod which are concentric with a central shaft, the upper connecting rod is hermetically connected with the top of the connecting pipe, the lower connecting rod is inserted into the connecting pipe and extends to be close to the upper connecting rod, and the joint of the lower connecting rod and the connecting pipe is welded and sealed; the lower connecting rod and the upper connecting rod are communicated through the central through hole, the outer diameter of the lower connecting rod is smaller than the inner diameter of the connecting pipe, and rubber is filled in a gap between the connecting pipe and the lower connecting rod.

2. The inserted vortex shedding flowmeter for absorbing vibration of claim 1, wherein the top of the connecting pipe is screwed with a connecting rod and then welded and sealed.

3. The inserted vortex shedding flowmeter for absorbing vibration of claim 1, wherein a ring of convex rings are provided on the outer wall of the lower connecting rod near the upper end portion, and a counter bore for accommodating the convex rings is provided on the inner wall of the upper end opening of the connecting rod, and the diameter of the counter bore is larger than that of the convex rings.

4. The inserted vortex shedding flowmeter for absorbing vibration of claim 1, wherein a circle of grooves is formed in the inner wall of the connecting pipe near the lower end surface, and the wall thickness from the bottom of the groove to the lower end surface of the connecting pipe is 0.5-1.5 mm.