CN217504870U

CN217504870U - Self-aligning orifice plate flowmeter

Info

Publication number: CN217504870U
Application number: CN202221609588.7U
Authority: CN
Inventors: 马耀飞
Original assignee: Jinan Shizhong Automation Instrument Co ltd
Current assignee: Jinan Shizhong Automation Instrument Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-27
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a from aligning orifice plate flowmeter, including left flange and right flange, be provided with the orifice plate between two flanges, all be provided with the gasket between every flange and the orifice plate, left side flange and right flange pass through a plurality of bolted connection, a plurality of bolts use the flange center to be circumference form equipartition as the centre of a circle, and the bolt is all tangent with the excircle of orifice plate, the excircle of gasket after with two flange joint. The flow meter fixes and limits the gasket and the pore plate at the center by the lateral jacking force of the mounting bolt so as to meet the requirement of concentricity with a pipeline during mounting. The measuring precision is guaranteed, meanwhile, the gasket is not easy to damage, the cost is saved, and the occurrence rate of leakage accidents is reduced.

Description

Self-aligning orifice plate flowmeter

Technical Field

The utility model relates to a flow detection field especially relates to a from aligning orifice plate flowmeter in pipeline.

Background

The orifice plate flowmeter has a long history background, reliable experimental data and perfect international (ISO 5167-2003) and national standard (GB 2624-2006). Has a huge market at home and abroad and is widely used in various fields. However, in the use process, due to the existence of installation errors, the center of the opening of the pore plate and the gasket is not concentric with the center of the pipeline, the larger the center of the opening of the pore plate deviates from the center of the pipeline, the larger the data error measured by the flow meter is, firstly, the gasket is easily damaged by the flowing medium in the pipeline, and secondly, the flow meter is easily deviated from the center of the pore plate, so that the sealing is not tight, and the leakage risk is caused. How to reduce the concentric error of the center of the orifice plate, the center of the gasket and the center of the pipeline becomes a difficult problem to be solved urgently.

Disclosure of Invention

To the above problem, the utility model discloses a from aligning orifice plate flowmeter, this flowmeter lean on the side direction top tight power of bolt for the installation with gasket and orifice plate fixed spacing at the center to with the endocentric requirement of pipeline when satisfying the installation. The measuring accuracy is guaranteed, meanwhile, the gasket is not easy to damage, the cost is saved, and the occurrence rate of leakage accidents is reduced.

The utility model provides a from aligning orifice plate flowmeter, includes left flange and right flange, is provided with the orifice plate between two flanges, all is provided with the gasket between every flange and the orifice plate, left side flange and right flange are through a plurality of bolted connection, a plurality of bolts use the flange center to be circumference form equipartition as the centre of a circle, and the bolt is all tangent with the excircle of orifice plate, the excircle of gasket after with two flange connections.

Preferably, the inner diameter of the spacer is larger than the inner diameter of the orifice plate.

Preferably, the gasket is provided with a sealing portion for preventing leakage, and the sealing portion is annularly distributed on both end surfaces of the gasket.

Preferably, the device further comprises a hoisting screw, and the hoisting screw is located between two adjacent bolts.

Preferably, the left side of the left flange and the right side of the right flange are both provided with conical bosses for connecting a pipeline to be tested.

The utility model has the advantages that:

1. the utility model discloses a can with the tangent size of bolt when increasing the excircle of gasket and orifice plate to the installation for orifice plate and gasket can effective positioning, and the center effectively coincides, and the fluid or the gas erodees the erosion phenomenon by the pipeline that prevent that the gasket skew from arousing has improved the life of gasket and orifice plate, has practiced thrift the cost of changing the flowmeter.

2. The left flange and the right flange are directly connected with a process pipeline of a client site, and the installation is economical and convenient. Through a large amount of real flow calibration data, the precision of the orifice plate flowmeter can reach 0.5 level.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

in the figure: 1. right flange, 2, orifice plate, 3, gasket, 4, hoisting screw, 5, right flange, 6, bolt, left gasket 7.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

The utility model discloses a from adjusting orifice plate flowmeter well as shown in fig. 1-2, this flowmeter includes left flange 5, left gasket 7, orifice plate 2, right gasket 3 and the right flange 1 of arranging in proper order from the left hand right side, and left flange and right flange are through a plurality of bolted connection 6, and the quantity of this bolt is eight, and eight bolts use the flange center to be circumference form equipartition as the centre of a circle, and when the bolt was as an organic whole with two flange joint, the excircle of orifice plate, the excircle of gasket all tangent with the bolt.

In order to prevent liquid or gas flowing media in the pipeline from scouring and eroding the gasket, the inner diameter of the gasket is designed to be larger than that of the pore plate, the production and processing cost is reduced while the sealing performance is ensured, the roughness processing degree of the surface of the gasket is inconsistent, the processing precision of a sealing part for preventing leakage is high, and the processing precision of other parts for connecting and supporting is low. And the thickness of the part of the gasket which is not in contact with the orifice plate is smaller than that of the part of the gasket which is in contact with the orifice plate.

In order to conveniently distinguish the front side and the back side and facilitate hoisting, the device is further provided with hoisting screws 4, the hoisting screws are installed on the flange on the side opposite to the bolts, as shown in fig. 2, the number of the hoisting screws is two, each hoisting screw is located between every two adjacent bolts, and the two hoisting screws are symmetrically distributed around the center of the flange.

For the convenience with the pipeline connection that awaits measuring of different diameters, all be provided with the conical boss that is used for connecting the pipeline that awaits measuring on the left side of left flange, the right side of right flange, because the boss is conical, so the local cross-sectional diameter of different length on the boss is also different, and this kind of structure can conveniently weld the pipeline of flange and different diameters, has increased flowmeter's commonality.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a from aligning orifice plate flowmeter, its characterized in that includes left flange and right flange, is provided with the orifice plate between two flanges, all is provided with the gasket between every flange and the orifice plate, left side flange and right flange pass through a plurality of bolted connection, a plurality of bolts use the flange center to be circumference form equipartition as the centre of a circle, and the bolt is all tangent with the excircle of orifice plate, the excircle of gasket after with two flange joint.

2. The self-aligning orifice plate flow meter of claim 1, wherein the spacer has an inner diameter greater than an inner diameter of the orifice plate.

3. A self-aligning orifice plate flow meter according to claim 1, wherein said gasket is provided with leak-proof seals annularly disposed on opposite ends of the gasket.

4. The self-aligning orifice plate flow meter of claim 1, further comprising a lifting screw, said lifting screw being positioned between two adjacent bolts.

5. The self-aligning orifice plate flow meter of claim 1, wherein the left side of the left flange and the right side of the right flange are each provided with a conical boss for connecting a pipe to be measured.