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Rigid variable cross-section device

A technology with variable rigidity and cross-section, applied in measuring devices, instruments, volume measurement, etc., it can solve the problems of complicated control process, reduced installation space, complicated measurement pipeline, etc., and achieves the effect of extending the turndown ratio, reducing the scale, and being easy to operate.

Pending Publication Date: 2020-04-10
姜春林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a fluid flow measurement system, which is used to overcome the defects in the prior art such as complex measurement pipeline, high cost, complicated control process and large installation space, etc., by changing the cross-sectional area of ​​the fluid pipeline during the measurement process to improve The turndown ratio of flow measurement greatly reduces the number of measuring devices, simplifies the measurement control program, reduces the installation space, and reduces the cost of installation, maintenance and overhaul, and provides the possibility of rigid detection of pipe variable cross-section, and the action is flexible and reliable , high sensitivity, easy to operate

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] as attached figure 1 As shown, the embodiment of the present invention provides a rigid cross-sectional device, including a detection pipeline 1, a driving component and an execution component, the detection pipeline 1 is used for passing the fluid to be tested, and is made of rigid material; the driving component is used for the execution component Provide driving force; the actuator is connected to the power output end of the actuator, installed on the inner wall of the detection pipeline 1, and includes at least one deformation that can act under the action of the driving force to change the gap between the actuator and the installation wall The unit is used to change the internal cross-sectional area of ​​the detection pipeline 1 by deforming the unit.

[0029] The detection pipeline 1 here can be made of a rigid material (such as a steel pipe), and the cross-section of the pipeline can be a general circular or square shape;

[0030] The deformation unit refers to ...

Embodiment 2

[0040] As a modification of the first embodiment above, see Figure 4 , the deformation unit includes an interference layer 37 and a deformable film layer 38; the interference layer 37 is arranged on the inner wall of the detection pipeline 1; the deformable film layer 38 connects the edge of the interference layer 37 and the inner wall of the detection pipeline 1, and the driving force acts Next, deformation occurs as the interference layer 37 approaches or moves away from the inner wall of the detection pipeline 1 in the radial direction; the interference layer 37, the deformable film layer 38, and the inner wall of the detection pipeline 1 covered by the interference layer 37 jointly form a sealed cavity 30; the detection pipeline 1 is provided with a through hole 301 communicating with the sealed cavity 30, and the through hole 301 is connected to the driving part 2 through a connecting pipe; the driving part 2 includes a gas source or a liquid source and is used for The i...

Embodiment 3

[0050] As another variation of Embodiment 1, see Figure 6-9 , the deformation unit also includes: two rectifying plates and two guide grooves; each rectifying plate is respectively located on the outside of an inner runner side plate, and one end of the two rectifying plates is hinged to both ends of the inner runner type panel (through The other ends of the two rectifying plates are respectively equipped with guide shafts; the two guide grooves are arranged on the cover plate of the detection pipeline, and are close to the adjacent side plates, and are respectively located on the sides of the two inner runners. The outer side of the whole formed by the connection of the inner runner plate and the inner runner type panel; one end of each guide shaft is located in a guide groove, and moves in the guide groove with the action of the inner runner type panel; the driving part includes a motor, and the motor The output shaft of the worm drive mechanism drives one of the inner chan...

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Abstract

The invention discloses a rigid variable cross-section device, which comprises a detection pipeline, a driving component and an executing component, wherein the detection pipeline is used for allowinga to-be-detected fluid to pass through and is made of a rigid material; the driving component is used for providing driving force for an executing component; and the executing component is in transmission connection with the power output end of the driving component, is mounted on the inner wall of the detection pipeline and comprises at least one deformation unit which can act under the action of the driving force so as to change a gap between the executing component and the mounting wall surface, and the cross section area in the detection pipeline is changed through the deformation unit. The problem that the detection pipeline is complex, high in cost, large in mounting space and the like in the prior art is solved, the measuring range ratio is increased by changing the cross section of the detection pipeline online, the cost is greatly reduced, the mounting space is reduced, the implementability of variable cross section of the rigid detection pipeline is provided, the action is flexible and reliable, the sensitivity is high, and the operation is easy.

Description

technical field [0001] The invention relates to the field of flow measurement, in particular to a rigid cross-sectional device for changing the cross-sectional area of ​​a fluid pipeline used in the flow measurement process. It can also be used in fields such as Venturi tube mixing or dust removal, and flow control valves. Background technique [0002] For the flow measurement of liquid and gas, by installing a sensor on the pipeline through which the fluid flows, the electrical signal is measured by the sensor, and the electrical signal can reflect the pressure difference of the fluid inside the pipeline, and the flow velocity of the fluid can be calculated through the pressure difference, according to the fluid The relationship between density ρ, flow velocity v and cross-section A and flow Q is: Q=ρ×v×A can obtain flow; due to the limitation of the range of sensor measurement, the pressure difference Δp that can be sensed is within Δp min ~Δp max Between, for the same m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34G01F15/00
CPCG01F1/34G01F15/001
Inventor 吴宇清姜春林
Owner 姜春林
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