CN202255499U

CN202255499U - Conical rectifier

Info

Publication number: CN202255499U
Application number: CN2011203620370U
Authority: CN
Inventors: 付涛; 赵清华; 徐军
Original assignee: Weihai Ploumeter Co Ltd
Current assignee: Weihai Ploumeter Co Ltd
Priority date: 2011-09-26
Filing date: 2011-09-26
Publication date: 2012-05-30
Anticipated expiration: 2021-09-26

Abstract

The utility model relates to the technical field of fluid measurement instruments, in particular to a conical rectifier which is characterized by being provided with a locating ring, a conical rectifying body and a rectifying bottom circle, wherein the conical rectifying body is formed by splicing and fixing spacing bars between every two rectifying rings with different diameters so that a rectifying gap is formed between every two rectifying rings; and the large end of the conical rectifying body is fixedly connected with the locating ring through the spacing bars, and the small end of the conical rectifying body is fixedly connected with the rectifying bottom circle through the spacing bars. Due to the adoption of the structure, the measuring precision is improved, and the conical rectifier has the advantages of novel structure, low fluid resistance, precision in measurement and the like.

Description

The taper rectifier

Technical field

The utility model relates to fluid measurement apparatus technical field, a kind of specifically taper rectifier that regime flow is provided for the ultrasonic flow meter measurement.

Background technology

As everyone knows; Ultrasonic flow meter is in the principle of utilizing ultrasound wave in liquid, to propagate; Through record sound wave forward, reverse propagation speed differential calculates flow rate of fluid, had the pipeline section area of flow velocity and flowmeter just to calculate flow, yet flowmeter is when practical application; Complex situations because of the flowmeter front end; As receive the influence of bend pipe, reducing, valve, filtrator etc., and being difficult to obtain the stable ideal fluid flowmeter of flowing through, unstable fluid is affected the accuracy of data measured.In order to eliminate the effects of the act, obtain stable fluid, the way that adopts usually is straight formula rectifier is installed in the porch of flowmeter, but because shown the influence of body length, it is very short that straight formula rectifier can only be done, thereby the rectified action of being played is also very little.

Through retrieval, CN201589634U discloses a kind of patent No. and has been: 201020300588X, patent name are: a kind of flowmeter is with the utility model patent of rectifier, and it is the multilayer circular ring structure of the donut formation of a plurality of different radiis; Each donut percent of pass dowel links to each other, and leaves the gap that fluid passes through between adjacent two donuts, and outer annulus is provided with the limit of turning back that is used for axial limiting; The axial length of said multilayer circular ring structure is 0.2 ~ 0.5 times of flowmeter caliber, in use, owing to leave the gap that fluid passes through between adjacent two donuts; The turbulence state of fluid is tended to be steady under the interception of multilayer annulus, and the flow speed of passing through from the gap between the multilayer annulus reaches plateau, realizes the rectification of convection cell; The deficiency of this structure is: owing to shown the influence of body length; It is very short that this rectifier can only be done, and the rectified action of playing is limited, and because the end face of each donut is respectively the plane; When fluid passes through; Form certain resistance to fluid easily, upset the fluidised form of fluid, increased the ripple amplitude of fluid; The rate of diffusion of body inner fluid momentum, energy is increased, and then the data that flowmeter is recorded have deviation.

Summary of the invention

The purpose of the utility model is the deficiency that solves above-mentioned prior art; Provide a kind of novel structure, fluid velocity to stablize, measure accurately, make fluid maintenance stable equilibrium fluid when the entering ultrasonic flow meter is received and dispatched supersonic zone, thereby realize the accurately taper rectifier of measurement rate of flow of fluid, raising ultrasonic flow meter precision.

The utility model solves the technical scheme that its technical matters adopted:

A kind of taper rectifier; Justify at the bottom of it is characterized in that being provided with locating ring, taper rectification body and rectification; The taper rectification body be by the collector ring of different-diameter successively through between muscle peg graft separately and fixedly form, form the rectification gap between two collector rings, muscle is fixedly connected with locating ring between the big end warp of taper rectification body; Small end through between muscle be fixedly connected with justifying at the bottom of the rectification; And the center of circle to comply with flow rate of fluid curve in the pipeline, reaches the effect of arrangement fluid, raising measuring accuracy at the bottom of locating ring, collector ring and the rectification on same straight line.

Collector ring in the utility model is to be surrounded by the strip stainless steel substrates; The upper end is provided with the interior inclined-plane that equates with taper rectification body gradient; The lower end is provided with the outer inclined-plane that equates with taper rectification body gradient; Be beneficial to fluid through out-of-date, reduce the resistance of fluid, reach fluid velocity and stablize, measure effect accurately.

Gap between the adjacent collector ring in the utility model is not less than 2.5 times of collector ring wall thickness, is beneficial to reduce the resistance of fluid.

The utility model is owing to adopt said structure, is fixed with short collector ring at the big end of cone, adapts to the table body length; And through each collector ring that adopts countersunk arrangement disorderly fluid is mixed fully in the cone space of rectifier, thus again through the rectification gap through obtaining stable fluid, have advantages such as novel structure, fluid resistance is little, measurement is accurate.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the vertical view of Fig. 1.

Reference numeral: circle 6, collector ring 7, a muscle 8, interior inclined-plane 10, outer inclined-plane 11 at the bottom of locating ring 5, the rectification.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified:

Shown in accompanying drawing: a kind of taper rectifier; Justify 6 at the bottom of it is characterized in that being provided with locating ring 5, taper rectification body and rectification; The taper rectification body be by the collector ring 7 of different-diameter successively through between muscle 8 pegs graft separately and fixedly forms, make formation rectification gap between the adjacent collector ring 7, muscle 8 is fixedly connected with locating ring 5 between the big end warp of taper rectification body; Muscle 8 is fixedly connected with circle 6 at the bottom of the rectification between the small end warp; And the center of circle 6 to comply with flow rate of fluid curve in the pipeline, reaches the effect of arrangement fluid, raising measuring accuracy at the bottom of locating ring 5, collector ring 7 and the rectification on same straight line.

Collector ring 7 in the utility model is to be surrounded by the strip stainless steel substrates; The upper end is provided with the interior inclined-plane 10 that equates with taper rectification body gradient; The lower end is provided with the outer inclined-plane 11 that equates with taper rectification body gradient; Be beneficial to fluid through out-of-date, reduce the resistance of fluid, reach fluid velocity and stablize, measure effect accurately.

Collector ring 7 in the utility model and the gap between the collector ring 7 are not less than 2.5 times of collector ring 7 wall thickness, are beneficial to reduce the resistance of fluid.

The utility model taper rectifier is installed in the pipeline of ultrasonic flow meter; And taper rectifier big opening end is towards the fluid inlet end; And be positioned at the ultrasonic flow meter inlet end; The taper rectifier is installed in before following current and the adverse current ultrasonic transducer, and purpose is for ultrasonic transducer provides stable fluid, when the fluid of the disorder inlet end from ultrasonic flow meter gets into; The following current ultrasonic transducer and the adverse current ultrasonic transducer at taper rectifier two ends send pulse signal respectively; Make the sound wave of the fluid of the taper rectifier of flowing through recorded the velocity contrast of fluid respectively by the reception of adverse current ultrasonic transducer and following current ultrasonic transducer, because the fluidised form of the metastable fluid that kept during the rectification gap of fluid between the collector ring of taper rectifier of flowing through flowing, this moment, ultrasonic wave energy was propagated in the fluid of equalization stable; And the factor that is not changed by the external world is disturbed; Thereby make the ultrasound wave of transmitting-receiving in opposite directions of following current ultrasonic transducer and adverse current ultrasonic transducer, can accurately measure rate of flow of fluid, improved the measuring accuracy of ultrasonic flow meter greatly.

The utility model has improved measuring accuracy owing to adopt said structure, has advantages such as novel structure, fluid resistance is little, measurement is accurate.

Claims

1. taper rectifier; Justify at the bottom of it is characterized in that being provided with locating ring, taper rectification body and rectification; The taper rectification body be by the collector ring of different-diameter successively through between muscle peg graft separately and fixedly form, make formation rectification gap between the adjacent collector ring, the gap between the adjacent collector ring is not less than 2.5 times of collector ring wall thickness; Collector ring is to be surrounded by the strip stainless steel substrates; The collector ring upper end is provided with the interior inclined-plane that equates with taper rectification body gradient, and the lower end is provided with the outer inclined-plane that equates with taper rectification body gradient, and muscle is fixedly connected with locating ring between the big end warp of taper rectification body; Small end through between muscle be fixedly connected with circle at the bottom of the rectification, and the center of justifying at the bottom of the collector ring of locating ring, different-diameter and the rectification is on same straight line.