CN211904242U - Multi-point flow measuring dynamometer flowmeter - Google Patents

Abstract

The utility model discloses a multipoint flow measurement power flowmeter, which comprises a pressure taking probe, a probe body, an inner protecting sleeve, three valve groups and a differential pressure transmitter which are connected in sequence, wherein the pressure taking probe is provided with a positive pressure taking pipe, a static pressure taking pipe and an internal pressure sensor, the left end of the inner protecting sleeve is arranged inside the probe body, and the right end of the inner protecting sleeve is connected with the three valve groups through a threaded connecting pipe; the flowmeter is characterized in that a plurality of flowmeters are installed in the pipeline during measurement, the flowmeters are uniformly arranged at intervals along the circumferential direction of the pipeline, and a differential pressure transmitter of each flowmeter is connected with a computer. The flowmeter gets rid of the defect of single pressure measurement of a plug-in type bartype flowmeter, and the precision level of the integrated multi-point measurement dynamometer reaches the unprecedented height.

Description

Multi-point flow measuring dynamometer flowmeter

Technical Field

The utility model relates to a flow detection field especially relates to a can realize high accuracy measurement's power erba flowmeter in pipeline.

Background

In the existing industrial metering scheme, the flow measuring devices for measuring the flow of fluid in a pipeline are various, and most of the flow measuring devices mainly use an inserted type bar differential pressure flowmeter for measuring a large-caliber pipe body. Such as: averaging pitot tube flow meters, pitot tubes, wishba flow meters, and the like. Due to the structural defects of most of the bar-type flowmeters, the pressure of a pipeline is measured singly, so that the measurement precision is greatly reduced.

Disclosure of Invention

To the above problem, the utility model discloses a power-erba flowmeter is measured to multiple spot flow, this flowmeter have broken away from the single drawback of getting the pressure measurement of bayonet bara flowmeter, make the precision level of integration multiple spot measurement power-erba flowmeter reach unprecedented height.

A multi-point flow measurement power-erba flowmeter comprises a pressure taking probe, a probe body, an inner protecting sleeve, three valve groups and a differential pressure transmitter which are sequentially connected, wherein the pressure taking probe is provided with a positive pressure taking pipe, a static pressure taking pipe and a built-in pressure sensor; the flowmeter is characterized in that a plurality of flowmeters are installed in the pipeline during measurement, the flowmeters are uniformly arranged at intervals along the circumferential direction of the pipeline, and a differential pressure transmitter of each flowmeter is connected with a computer.

Preferably, the inner sheath pipe is provided with a positive pressure taking device and a static pressure taking device, the positive pressure taking device is communicated with the positive pressure taking pipe, and the static pressure taking device is communicated with the static pressure taking pipe.

Preferably, the right end of the probe body is provided with a sealing gasket for sealing a gap between the probe body and the inner sheath tube.

Preferably, a sealing flange is arranged outside the sealing gasket and connected with the probe body through bolts and nuts.

Preferably, the pressure-measuring probe of each dynamometer flow meter is positioned in the pipeline, and the length of each pressure-measuring probe in the pipeline is different.

Preferably, the probe body of each dynamometer flow meter is welded with the pipeline, and the axis of each pressure sampling probe is perpendicular to the side wall of the pipeline.

The pressure-taking probe of the Limba flowmeter is communicated with a pressure diaphragm of a differential pressure transmitter, the differential pressure transmitter converts the acquired differential pressure into 4-20mA flow signals and transmits the 4-20mA flow signals to a computer, and the computer calculates all the flow signals and takes an average value.

The utility model has the advantages that:

1. the utility model discloses multiple spot flow measurement power erba flowmeter measures the fluid flow in the same pipeline in being equivalent to using the power erba flowmeter of a plurality of differences, and the average value of whole measuring results is got to the measuring result, and the measuring result is more accurate, and measurement accuracy can reach 0.5% level.

When one pressure measuring probe is blocked and a flow signal is deviated from a normal value, the average value can be obtained through a plurality of the Limb flowmeters, so that the metering precision is improved. And the pressure measuring probe which is blocked is found through the comparison of the flow signals for maintenance.

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 block diagram of a Limbar flow meter;

FIG. 2 is a block diagram of a plurality of Limbar meters connected to a pipeline;

in the figure: 1. the pressure difference transmitter comprises a pressure difference transmitter body, 2, a three-valve group, 3, a threaded connection pipe, 4, an inner protective sleeve, 5, a nut, 6, a bolt, 7, a sealing gasket, 8, a probe body, 9, a positive pressure measuring device 10, a static pressure measuring device, 11 and a pressure measuring probe.

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.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The utility model discloses a force elba flowmeter is measured to multiple spot flow as shown in fig. 1-2, this flowmeter is from the left hand right side in proper order for getting pressure probe 11, the probe originally, 8, inner sheath pipe 4, three valves 2 and differential pressure transmitter 1, it is provided with malleation pressure-taking pipe and static pressure-taking pipe to get pressure probe 11, all be provided with pressure sensor in every pressure-taking pipe, inner sheath pipe 4 is provided with positive pressure-taking device 9 and static pressure-taking device 10, positive pressure-taking device and malleation pressure-taking pipe intercommunication, static pressure-taking device and static pressure-taking pipe intercommunication. 8 suits of probe body are outside at the inner sheath pipe, the right-hand member of inner sheath pipe stretches out the probe body outside, is provided with the seal gasket 7 that is used for sealing the gap between probe body and the inner sheath pipe at the probe body right-hand member, and this seal gasket is the metal winding pad, and the seal gasket outside is provided with sealing flange, and sealing flange and probe body clamp seal gasket in the middle to it is fixed to connect through bolt 6 and nut 5. The right end of the inner protecting sleeve is connected with the three-valve group 2 through a threaded connecting pipe 3, a pressure diaphragm is arranged in the differential pressure transmitter, and the pressure diaphragm is electrically connected with a pressure sensor in the pressure taking probe. The differential pressure transmitter converts the pressure signal into a 4-20mA flow signal by acquiring the differential pressure of the pressure taking probe.

When carrying out flow measurement to the pipeline, a plurality of power elba flowmeters of installation in the pipeline, a plurality of power elba flowmeters evenly set up along the circumferencial direction interval of pipeline, every power elba flowmeter's probe body all with the pipeline welding, the axis of probe body sets up with the pipeline wall is perpendicular, every power elba flowmeter's pressure probe all is located the pipeline, every pressure probe is located the length inequality in the pipeline. The differential pressure transmitter of each flowmeter is connected with a computer.

The signal output end of each Limba flow sensor is connected with the signal input end of the corresponding differential pressure transmitter, the differential pressure transmitters convert the collected differential pressure into 4-20mA flow signals and transmit the flow signals to the computer, and the computer calculates all the flow signals and averages the flow signals.

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 (6)

1. The multi-point flow measurement power-erba flowmeter is characterized by comprising a pressure taking probe, a probe body, an inner protecting sleeve, three valve groups and a differential pressure transmitter which are sequentially connected, wherein the pressure taking probe is provided with a positive pressure taking pipe, a static pressure taking pipe and a built-in pressure sensor; the flowmeter is characterized in that a plurality of flowmeters are installed in the pipeline during measurement, the flowmeters are uniformly arranged at intervals along the circumferential direction of the pipeline, and a differential pressure transmitter of each flowmeter is connected with a computer.

2. The flowmeter of claim 1, wherein the inner sheath tube is provided with a positive pressure taking device in communication with the positive pressure taking tube and a static pressure taking device in communication with the static pressure taking tube.

3. The flowmeter of claim 2, wherein the right end of the probe body is provided with a sealing gasket for sealing a gap between the probe body and the inner sheath.

4. The flowmeter of claim 3, wherein the sealing gasket is externally provided with a sealing flange, and the sealing flange is connected with the probe body through bolts and nuts.

5. The multi-point flowmeter of claim 1, wherein the pressure probes of each of the plurality of flowmeters are located within the conduit, and wherein the pressure probes are each located within the conduit at unequal lengths.

6. The multi-point flowmeter of claim 1, wherein the probe body of each of the flowmeters is welded to the pipe, and the axis of each pressure probe is perpendicular to the side wall of the pipe.

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