CN208937112U - A kind of balanced flow measuring device and Flow Measuring System - Google Patents

Abstract

The utility model relates to a kind of balanced flow measuring device and Flow Measuring Systems, including balanced flow sensor, the balanced flow sensor is fixed on inside measurement pipeline by supporting element, and the pressure short tube that balanced flow covers disposed on sensor is set extend out to measurement pipeline external, the measurement pipe diameter matches with the process pipe diameter to measurement of discharge, pipe ends are measured equipped with the connection structure for connecting with to measurement of discharge process pipe, the balanced flow measuring device of the utility model meets the flow measurement demand of heavy caliber (DN500-DN3000) pipeline internal medium.

Description

A kind of balanced flow measuring device and Flow Measuring System

Technical field

The utility model relates to flow measurement equipment technical fields, and in particular to a kind of balanced flow measuring device and flow Measuring system.

Background technique

Balanced flow measuring device belongs to a kind of differential pressure type flow instrument, and working principle, which is all based in closed conduct, to flow Weight conservation (continuity equation) and the conservation of energy (Bernoulli equation) law, current balanced flow measuring device can only be used In the measurement of small-bore process pipe flow, it is unable to satisfy the measurement of heavy caliber (DN500-DN3000) process pipe flow.

Utility model content

Purpose of the utility model is to overcome the deficiencies of the above prior art and provide a kind of balanced flow measuring device, Meet the measurement demand of heavy caliber (DN500-DN3000) process pipe flow.

To achieve the above object, the utility model adopts the following technical solutions:

A kind of balanced flow measuring device, including balanced flow sensor, the balanced flow sensor pass through supporting element It is fixed on inside measurement pipeline, and the pressure short tube that balanced flow covers disposed on sensor is set extend out to measurement pipeline external, the survey Amount pipe diameter matches with the process pipe diameter to measurement of discharge, and measurement pipeline can connect the process duct that heavy caliber waits for measurement of discharge Road, meets rate-of flow measurement demand in heavy caliber process pipe, measurement pipe ends be equipped with for to measurement of discharge technique The connection structure of pipeline connection.

Further, the balanced flow sensor is using porous plate flow sensor or rectifier type flow sensor or tune Shaping flow sensor.

Further, the supporting element uses steel pipe, and described steel pipe one end is fixedly connected with balanced flow sensor, another It holds and is fixedly connected with the inner surface of measurement pipeline.

Further, the balanced flow sensor and measurement pipeline coaxial arrangement.

Further, the measurement pipeline is equipped with through-hole, and the pressure short tube on the balanced flow sensor passes through logical Hole extend out to measurement pipeline external, is sealed between pressure short tube outer wall and through-hole.

Further, the connection structure uses connecting flange.

The invention also discloses a kind of Flow Measuring Systems, including the balanced flow measuring device, the survey The both ends in buret road are connect with the process pipe to measurement of discharge, and the pressure short tube of balanced flow sensor passes through pressure guiding pipe connection three Valve group, three valve group are connect with differential pressure transmitter.

Further, when medium temperature to be measured is higher than 80 DEG C, condenser is set between pressure guiding pipe and three valve groups.

Further, when the medium of measurement of discharge is gas, pressure short tube and pressure guiding pipe are towards to measurement of discharge process pipe Surface, three valve groups and differential pressure transmitter are located at the surface to measurement of discharge process pipe.

Further, when the medium of measurement of discharge is liquid, pressure short tube and pressure guiding pipe are towards to measurement of discharge process pipe Underface, three valve groups and differential pressure transmitter are located at the underface to measurement of discharge process pipe.

The utility model has the beneficial effects that

The balanced flow measuring device structure of the utility model is simple, easy to process, by passing existing balanced flow Sensor is installed in measurement pipeline, and measurement pipeline matches with bigbore to measurement of discharge process pipe, meets the big mouth of measurement The demand of rate-of flow in diameter process pipe overcomes traditional balanced flow sensor and is unable to measure heavy caliber (DN500- DN3000) in process pipe the problem of rate-of flow.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.

Fig. 1 is the utility model balanced flow measuring device overall structure diagram；

Fig. 2 is the measuring system structural schematic diagram that the utility model is used to measure gas medium flow；

Fig. 3 is the measuring system structural schematic diagram that the utility model is used to measure high-temp liquid rate-of flow；

Wherein, 1. balanced flow sensor, 1-1. pressure short tube, 2. measurement pipelines, 3. steel pipes, 4. flange arrangements, 5. pads Piece, 6. process pipes, 7. pressure guiding pipes, 8. 3 valve groups, 9. differential pressure transmitters, 10. condensers.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the utility model, only indicate and attached drawing The upper and lower, left and right direction of itself is consistent, not to structure rise restriction effect, it is only for convenient for description the utility model and Simplify description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific orientation construction And operation, therefore should not be understood as limiting the present invention.

As background technique is introduced, existing balanced flow measuring device is unable to measure medium in large diameter pipeline Flow, in view of the above-mentioned problems, present applicant proposes a kind of balanced flow measuring devices.

In a kind of exemplary embodiment of the application, as shown in Figure 1, a kind of balanced flow measuring device, including equiulbrium flow Quantity sensor 1, the balanced flow sensor are fixed on inside measurement pipeline 2 by supporting element, and on balanced flow sensor The pressure short tube 1-1 of setting extend out to measurement pipeline external, the measurement pipe diameter and the process pipe diameter to measurement of discharge Match, measurement pipe ends are equipped with the connection structure for connecting with to measurement of discharge process pipe.

The balanced flow sensor uses existing flow sensor, and porous plate flow sensor or rectifier type can be used Flow sensor or adjustment shape flow sensor.Existing above-mentioned flow sensor is unable to measure the large-diameter pipe of DN500 or more Road meets the measurement demand of large diameter pipeline by being fixed with inside measurement pipeline.

The measurement pipeline uses metal tube, and the interior media temperature that can be born reaches as high as 850 DEG C, the pressure that can be born Power reaches as high as 42Mpa, and corrosion-resistant, stain resistance.

The supporting element uses steel pipe 3, and balanced flow sensor upper end and one end of two steel pipes are welded and fixed, and two Steel pipe is symmetrically distributed in the pressure short tube two sides of balanced flow sensor, one end of balanced flow sensor lower end and a steel pipe It is welded and fixed, which is located at the middle part of balanced flow sensor, and the other end of three steel pipes is welded with the inner surface of measurement pipe Connect fixation.

The equal length of three steel pipes makes balanced flow sensor and measurement pipeline coaxial arrangement, when measurement, balanced flow Sensor improves the accuracy of measurement result to measurement of discharge media interior stress equalization.

It is set on the measurement pipeline there are two through-hole, the pressure short tube of balanced flow sensor is stretched out by the through-hole To the outside of measurement pipeline, welded seal is carried out between pressure short tube outer circumference surface and through-hole, is prevented to be measured in measurement pipeline Measure dielectric leakage.

The connection structure for measuring pipe ends uses flange arrangement 4, by flange arrangement and to the process pipe of measurement of discharge Connection can also be used and connect to folder, straight weldering or square tube with the process pipe to measurement of discharge, and specific connection type is according to product situation Depending on, the rate-of flow of bidirectional flow can be measured.

The balanced flow measuring device of the utility model can measure within the scope of DN500-DN3000 caliber and be situated between in process pipe The flow of matter, precision reach 1.0, and the process pipe flow development length to be measured before balanced flow measuring device requires to be at least up to 5 times of process pipe diameter to be measured, the process pipe flow development length to be measured after balanced flow measuring device require at least Reach the diameter of 2 times of process pipe to be measured, the range ratio of balanced flow measuring device is 10:1 or more, and repeatability is 0.1%, the circulation area ratio β range of measurement pipeline internal balance flow sensor is 0.25-0.9, balanced flow measuring device The flow of two-way flow medium can be measured, and the flow of various media can be measured.

The invention also discloses a kind of measuring systems to measure pipeline using the balanced flow measuring device Both ends are connect by flange arrangement and gasket 5 with the process pipe 6 of flow to be measured, the pressure of the balanced flow sensor Short tube is connect by pressure guiding pipe 7 with three valve groups 8, and three valve group is connect with differential pressure transmitter 9, and pressure short tube and pressure guiding pipe draw The connection type of pressure pipe and three valve groups, three valve groups and differential pressure transmitter uses the connection type of existing flow sensor, herein Without describing in detail.

When the medium temperature of measurement of discharge is higher than 80 DEG C, it is connected with condenser 10 between pressure guiding pipe and three valve groups, treats The medium of measurement of discharge cools down, and prevents high-temperature medium from damaging to differential pressure transmitter.

When the medium of measurement of discharge is gas, pressure short tube and pressure guiding pipe are towards the position directly above of measurement pipeline, i.e., Three valve groups and differential pressure transmitter are located at the surface of measurement pipeline, and the impurity such as mixed water droplet can be under gravity in gas Sink, differential pressure transmitter will not be entered by pressure guiding pipe, improve the accuracy of measurement result.

When the medium of measurement of discharge is liquid, sampling short tube and pressure guiding pipe are towards measurement pipeline following location directly, i.e., Three valve groups and differential pressure transmitter are located at the underface of measurement pipeline, and differential pressure transmitter is supported using supporter, avoid impulse Pipe deformation leaks, and mixed bubble floating in liquid will not enter differential pressure transmitter by pressure guiding pipe, improve measurement result Accuracy.

When being measured using the measuring system of the utility model, the medium in process pipe to be measured flows through the equiulbrium flow Measuring device, medium flow through measurement pipe road and measure the balanced flow sensor in pipeline, utilize balanced flow sensor two End generates the measurement that pressure difference realizes flow, and differential pressure transmitter detects to obtain this pressure difference, and pressure difference is converted into corresponding Flow value realizes the measurement to rate-of flow, and working principle is identical as existing balanced flow sensor, herein without detailed Thin narration.

Using this measuring system, the flow of a variety of media can measure, measurement result is accurate, and meets in large diameter pipeline The measurement demand of rate-of flow.

It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model Within enclosing.

Claims (10)

1. a kind of balanced flow measuring device, which is characterized in that including balanced flow sensor, the balanced flow sensor is logical It crosses supporting element to be fixed on inside measurement pipeline, and the pressure short tube that balanced flow covers disposed on sensor is set is extend out to outside measurement pipeline Portion, the measurement pipe diameter match with the process pipe diameter to measurement of discharge, measurement pipe ends be equipped with for it is to be measured The connection structure of flow process pipe connection.

2. a kind of balanced flow measuring device as described in claim 1, which is characterized in that the balanced flow sensor is adopted With porous plate flow sensor or rectifier type flow sensor or adjustment shape flow sensor.

3. a kind of balanced flow measuring device as described in claim 1, which is characterized in that the supporting element uses steel pipe, institute It states steel pipe one end to be fixedly connected with balanced flow sensor, the other end is fixedly connected with the inner surface of measurement pipeline.

4. a kind of balanced flow measuring device as described in claim 1, which is characterized in that the balanced flow sensor and survey The coaxial arrangement of buret road.

5. a kind of balanced flow measuring device as described in claim 1, which is characterized in that the measurement pipeline is equipped with logical Hole, pressure short tube on the balanced flow sensor extend out to measurement pipeline external by through-hole, pressure short tube outer wall and logical It is sealed between hole.

6. a kind of balanced flow measuring device as described in claim 1, which is characterized in that the connection structure uses connection method It is blue.

7. a kind of Flow Measuring System using balanced flow measuring device described in any one of claims 1-6, feature exist In the both ends of the measurement pipeline are connect with the process pipe to measurement of discharge, and the pressure short tube of balanced flow sensor is by drawing Pressure pipe connects three valve groups, and three valve group is connect with differential pressure transmitter.

8. Flow Measuring System as claimed in claim 7, which is characterized in that when medium temperature to be measured is higher than 80 DEG C, impulse Condenser is set between Guan Yusan valve group.

9. Flow Measuring System as claimed in claim 7, which is characterized in that when the medium of measurement of discharge is gas, pressure is short Pipe and pressure guiding pipe are located at towards the surface to measurement of discharge process pipe, three valve groups and differential pressure transmitter to measurement of discharge process pipe Surface.

10. Flow Measuring System as claimed in claim 7, which is characterized in that when the medium of measurement of discharge is liquid, pressure is short Pipe and pressure guiding pipe are located at towards the underface to measurement of discharge process pipe, three valve groups and differential pressure transmitter to measurement of discharge process pipe Underface.