CN201203442Y

CN201203442Y - Energy-saving low maintenance flowmeter

Info

Publication number: CN201203442Y
Application number: CNU2008200125346U
Authority: CN
Inventors: 贾会安
Original assignee: 贾会安
Current assignee: Liaoning Focus Technology Co.,Ltd.
Priority date: 2008-05-05
Filing date: 2008-05-05
Publication date: 2009-03-04
Anticipated expiration: 2018-05-05

Abstract

An energy-saving maintenance flowmeter comprises a testing tube body characterized that a solid with two sides of internal concave arc is arranged in the testing tube body, a pressure measuring hole is also arranged on the testing tube body at both sides of the solid, wherein the arc edge of the solid both sides internal concave arc is a 90 degrees arc line, the space between the arc edge lower ends of the solid both sides internal concave arc transition; the pressure measuring hole on the testing tube body is in a range of 0.2D-1.5D near the solid edges, the diameter of the pressure measuring hole is 14-89mm. The energy-saving maintenance flowmeter not only suits for the medium flow measurement of the ordinate gas, liquid and steam, but also has good effect for the low pressure and dirty medium, has advantages of low pressure loss, anti-abrasion, anti-smudginess, high differential pressure, energy-saving and low maintenance.

Description

A kind of energy-conservation low flowmeter of safeguarding

Technical field

The utility model relates to a kind of flowmeter, particularly relates to a kind of have degree of precision, energy-conservation, the low energy-conservation low flowmeter of safeguarding of safeguarding of differential pressure type, is to the improvement of existing differential pressure flowmeter structure, belongs to differential pressure type flow measurement instrument manufacturing technology.

Background technology

At present, differential pressure flowmeter is to use maximum a kind of measurement instruments. generally by restriction device, differential pressure transmitter and integrating instrument three parts are formed. and restriction device commonly used has standard orifice plate, nozzle, Venturi tube, wedge shape flowmeter etc., this type of restriction device differential pressure value height, but crushing is big, the usually stifled guiding tube of dirty medium.Recent years newly occurred Verabar, pipe is clung in holder, and V awl waits the novel throttling device, and the pressure loss reduces greatly, but dirty medium is still had no idea, and is very little because of the differential pressure value of the little generation of throttling to low flow rates of fluid, makes and measures instability.

The utility model content

The purpose of this utility model is to overcome the prior art above shortcomings, and the energy-conservation low flowmeter of safeguarding that a kind of crushing is little, can measure low pressure and dirty medium is provided.This is energy-conservation lowly safeguards that flowmeter removes and is applicable to common gases that liquid outside rate-of flows such as steam are measured, has good result equally to low pressure and dirty medium, has that crushing is little, wear-resistant, a dirt that bears dirty, differential pressure value height, energy-conservation, the low characteristics of safeguarding.

The technical scheme that the utility model provides is: this energy-conservation low flowmeter of safeguarding, include the test body, and be characterized in the described test body solid that to be built-in with both sides be the indent arc, also be provided with pressure port on the test body of these solid both sides.

For better finishing the purpose of this utility model, the arc limit of the solid both sides indent arc in the described test body is 90 degree camber lines, is arc transition between the arc limit lower extreme point of solid both sides indent arc.

For better finishing the purpose of this utility model, the pressure port on the described test body is located in 0.2D～1.5D scope apart from the solid edge, and the diameter of pressure port is 14～89 millimeters, and wherein D is the diameter of test body.

When fluid flows through ducted test body, because the variation of flow section before and after the test body, has produced certain pressure reduction, read differential pressure information, according to the funtcional relationship of differential pressure and flow, thereby draw pipeline flow.

According to the needs of flow range in the practicality, the restriction of the demand of the throttling element pressure loss and flowmeter length can be adjusted physical dimension of the present utility model, such as, ratio of height to diameter H/D etc., wherein H is the height of solid.

Compared with prior art, the beneficial effects of the utility model are: remove and be applicable to common gases, liquid is outside rate-of flows such as steam are measured, low pressure and dirty medium there are good result equally, have that crushing is little, wear-resistant, a dirt that bears dirty, differential pressure value height, energy-conservation, the low characteristics of safeguarding.

Description of drawings

Fig. 1 provides the structural representation of embodiment for the utility model;

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

Embodiment

As Fig. 1～shown in Figure 2, this energy-conservation low flowmeter of safeguarding, include test body 1, the solid 2 that it is the indent arc that described test body 1 is built-in with both sides, also be provided with pressure port 3 on the test body 1 of these solid 2 both sides, the arc limit R1 that wherein tests the solid 2 both sides indent arcs in the body 1 is 90 degree camber lines, is circular arc R 2 transition between the arc limit R1 lower extreme point of solid 2 both sides indent arcs, and the circular arc R 2 of this transition can be 180 degree semicircles; The pressure port 3 of test on the body 1 is located in 0.5D～1.0D scope apart from solid 2 edge A, and the diameter of pressure port is 25～60 millimeters, and wherein D is the diameter of test body.

During use, with test body 1 of the present utility model connect with pipeline in, when fluid flows through ducted test body 1, because the existence of solid 2 in the test body 1, make flow section that variation take place, the camber line of solid 2 both sides indent curved surfaces shrinks fluid gradually, plays the effect of rectifier, even small differential pressure is also very stable, owing in solid 2 front and back, produced certain pressure reduction, read differential pressure information, the funtcional relationship of root a tree name differential pressure and flow, thus draw pipeline flow.Can be according to the needs of flow range in the practicality, the demand of the throttling element pressure loss and the restriction of flowmeter length, adjust the utility model physical dimension, such as ratio of height to diameter H/D etc.

Because solid 2 bottoms are circular-arc entity, do not have acute angle, are not afraid of wearing and tearing, pressure port 3 is away from vortex region, and pressure port 3 diameters are thick, can not allow dirty medium stop up.

Claims

1. the energy-conservation low flowmeter of safeguarding includes the test body, it is characterized in that the described test body solid that to be built-in with both sides be the indent arc, also is provided with pressure port on the test body of these solid both sides.

2. the energy-conservation low flowmeter of safeguarding according to claim 1, the arc limit that it is characterized in that the solid both sides indent arc in the described test body are 90 degree camber lines, are arc transition between the arc limit lower extreme point of solid both sides indent arc.

3. the energy-conservation low flowmeter of safeguarding according to claim 1 and 2 is characterized in that pressure port on the described test body is located in 0.2D～1.5D scope apart from the solid edge, and the diameter of pressure port is 14～89 millimeters.