CN218002612U

CN218002612U - Bidirectional measurement balance flowmeter

Info

Publication number: CN218002612U
Application number: CN202222375250.6U
Authority: CN
Inventors: 马耀飞
Original assignee: Jinan Shizhong Automation Instrument Co ltd
Current assignee: Jinan Shizhong Automation Instrument Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-09
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a two-way measurement balance flowmeter, including balance sensor, install porous balance piece in the balance sensor, the left and right both sides of porous balance piece respectively are provided with two and get and press the pipe, and two that lie in porous balance piece with one side are got with the pipe and are pressed the opposite direction, and every is got and is pressed the pipe and all connect a stop valve, and a plurality of pressure pipes of getting are connected with three valves jointly, three valves are connected with differential pressure transmitter. The flowmeter is provided with two pairs of pressure sampling pipes, a positive pressure sampling device and a negative pressure sampling device are installed, when medium flows in the positive direction, a valve corresponding to the positive pressure sampling device is opened, and a valve of the negative pressure sampling device is closed; similarly, when the medium flows in the reverse direction, the valve corresponding to the reverse pressure measuring device is opened, and the valve corresponding to the forward pressure measuring device is closed, so that the universality of the flowmeter and the working efficiency of measurement can be effectively improved.

Description

Bidirectional measurement balance flowmeter

Technical Field

The utility model relates to a flow detection field especially relates to a two-way measurement balanced flowmeter in pipeline.

Background

In the existing industrial metering scheme, a balance flowmeter for largely using flow measurement is provided with only one pair of pressure measuring holes, most media for measurement are media flowing in a single direction, in a special measurement occasion, the media in some pipelines need to be measured in two directions, for example, the media need to be measured in two directions, two sides of a gas conveying pipeline need to be measured, in the prior art, the flow meter needs to be detached after one measurement for the media requiring two-way measurement, and then the flow meter needs to be installed again in the opposite direction, so that the disassembling and assembling process is complex, and the measurement process is delayed.

Disclosure of Invention

In order to solve the problems, the utility model discloses a two-way measurement balance flowmeter, which is provided with two pairs of pressure-taking pipes, a positive pressure-taking device and a negative pressure-taking device are arranged, when medium circulates in the positive direction, a valve corresponding to the positive pressure-taking device is opened, and a valve corresponding to the negative pressure-taking device is closed; similarly, when the medium flows in the reverse direction, the valve corresponding to the reverse pressure measuring device is opened, and the valve corresponding to the forward pressure measuring device is closed, so that the universality of the flowmeter and the working efficiency of measurement can be effectively improved.

The utility model provides a two-way measurement balance flowmeter, includes balance sensor, install porous balance piece in the balance sensor, the left and right both sides of porous balance piece respectively are provided with two and get and press the pipe, lie in porous balance piece with two of one side get press the pipe get opposite direction, every is got and is pressed the pipe and all connect a stop valve, a plurality of pressure of getting are pressed the pipe and are connected with three valves jointly, three valves are connected with differential pressure transmitter.

Preferably, the two pressure tapping pipes located on the same side of the porous balancing sheet are arranged symmetrically with respect to the sum axis of the sensor.

Preferably, a rectifying balance sheet is further arranged in the sensor, the rectifying balance sheet is provided with a plurality of through holes, the through holes of the rectifying balance sheet are communicated with the through holes of the porous balance sheet, and the rectifying balance sheet is located on the left side of the porous balance sheet and is arranged in parallel with the porous balance sheet.

Preferably, the pressure tapping pipe positioned on the left side of the porous balance sheet is positioned on the right side of the rectifying balance sheet.

Preferably, a sealing ring is arranged between the differential pressure transmitter and the three valve groups.

Preferably, the left end and the right end of the balance sensor are both provided with connecting flanges.

The utility model has the advantages that:

1. the utility model discloses a set up two sets of survey pipes in the sensor, realize exempting from to dismantle and to carry out bidirectional measurement to the medium flow under the condition, and only through the break-make state of transform stop valve, only need a differential pressure transmitter just can measure bidirectional flow's medium, saved time and manpower.

2. Because the balance flow sensor has the characteristic of a porous structure, the rectifying balance sheet can balance a flow field, reduce vortex, vibration and signal noise, greatly improve the stability of the flow field, and improve the accuracy by 5-10 times compared with the traditional throttling device by adopting a pressure stabilizing ring type multi-point pressure taking mode.

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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

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

FIG. 2 is a perspective view of the present invention;

in the figure: 1. the balance sensor comprises a balance sensor body, 2 parts of a porous balance sheet, 3 parts of a connecting flange, 4 parts of a bolt and a nut, 5 parts of a first positive pressure tapping pipe, 6 parts of a first positive stop valve, 7 parts of a first negative pressure tapping pipe, 8 parts of a first negative stop valve, 9 parts of a second negative stop valve, 10 parts of a second negative pressure tapping pipe, 11 parts of a second positive stop valve, 12 parts of a second positive pressure tapping pipe, 13 parts of a three-valve group, 14 parts of a differential pressure transmitter, 15 parts of a rectification balance sheet.

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 obtained by a person of ordinary skill in the art based on the embodiments of the present application without making any creative effort belong to 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 two-way measurement balance flowmeter as shown in fig. 1-2, this flowmeter has set gradually rectification balance piece 15 and porous balance piece 2 from the left hand right side in sensor 1, every balance piece all is provided with a plurality of through-holes, the difference is, the rectangle structure is constituteed to four through-holes of rectification balance piece, rectification balance piece is equipped with a small-size through-hole at its center, radial evenly sets up a plurality of great size through-holes around the small-size through-hole, some of through-hole and the partial through-hole coincidence on the porous balance piece on the rectification balance piece, so set up can make medium flow more stable in the pipeline, measuring result is more accurate.

Be provided with first negative pressure sampling pipe 7 and second positive pressure sampling pipe 12 between rectification balance piece and porous balance piece, two pressure sampling pipes are the symmetric form distribution about the axis of sensor pipeline, and external factors such as the medium degree of depth, the velocity of flow when passing through two pressure sampling pipes are the same promptly, so set up and can reduce the measuring error that external factor arouses. A first positive pressure taking pipe 5 and a second negative pressure taking pipe 10 are arranged on the right side of the porous balance sheet, and the two pressure taking pipes are also symmetrically arranged about the axis of the sensor pipeline. And each pressure tapping pipe is provided with a stop valve for controlling the on-off between the pressure tapping pipe and the measuring equipment. The pressure sampling pipes are communicated with three valve groups 13 together, and the other ends of the three valve groups are communicated with a differential pressure transmitter 14.

The device is when using, through bolt and nut 4 with the pipeline with 3 firm in connection at the flange at flowmeter sensor both ends, when the flow parameter of medium from the left hand right side in the needs measuring pipe, closes first negative direction stop valve 8 and first positive stop valve 6, opens second positive direction stop valve 11 and second negative direction stop valve 9 for the second group is got and is pressed pipe and 13 and differential pressure transmitter 14 intercommunications of three valves, and first group is got and is pressed the pipe and seal and not lead to. When the flow parameters of media in the pipeline from right to left need to be measured, the first negative stop valve 8 and the first positive stop valve 6 are opened, and the second positive stop valve 11 and the second negative stop valve 9 are closed, so that the first group of pressure tapping pipes are communicated with the three valve banks 13 and the differential pressure transmitter 14, and the second group of pressure tapping pipes are closed and are not communicated.

The method does not need to disassemble and assemble the flowmeter for many times, and can effectively improve the universality and the efficiency of test preparation work.

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 two-way measurement balance flowmeter, its characterized in that, includes balanced sensor, install porous balance piece in the balanced sensor, the left and right both sides of porous balance piece respectively are provided with two and get and press the pipe, and two that lie in porous balance piece with one side are got with pressing the pipe and are pressed the opposite direction, and every is got and presses the pipe and all connects a stop valve, and a plurality of are got and are pressed the pipe and be connected with three valves jointly, three valves are connected with differential pressure transmitter.

2. The flowmeter of claim 1, wherein the two pressure taps on the same side of the porous balance plate are symmetrically arranged about the sum axis of the transducers.

3. The flowmeter of claim 1, wherein a rectifying balance plate is further disposed in the sensor, the rectifying balance plate has a plurality of through holes, the through holes of the rectifying balance plate are partially communicated with the through holes of the porous balance plate, and the rectifying balance plate is disposed on the left side of the porous balance plate and parallel to the porous balance plate.

4. A bidirectional measurement balanced flow meter according to claim 3, characterized in that the pressure tapping pipe on the left side of the porous balance piece is located on the right side of the rectifying balance piece.

5. The flowmeter of claim 1, wherein a sealing ring is disposed between said differential pressure transmitter and said three-valve set.

6. The flowmeter of claim 1, wherein the balance sensor has a connecting flange at each of the left and right ends.