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Rectifying device and flowmeter

A technology of rectification device and fluid passage, which is applied in the direction of measuring device, fluid flow, liquid/fluid solid measurement, etc., can solve the problems of long rectification tube and low rectification effect of rectification device, and achieve low cost and high rectification effect

Inactive Publication Date: 2004-09-29
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The rectification effect of the rectification device using the net is low, and the rectification device using the rectification tube has a high rectification effect, but it has the disadvantage of a long rectification tube

Method used

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  • Rectifying device and flowmeter
  • Rectifying device and flowmeter
  • Rectifying device and flowmeter

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Figure 1A Embodiment 1 of the rectifying device of the present invention is shown. The rectifying device of embodiment 1 is that the position 2 to be rectified is arranged in the straight fluid passage 1, and only the upstream ( Figure 1A Inside the fluid channel 1 in the center is the left side) there is provided an inner protruding part 3 protruding inwardly from the fluid channel wall by a predetermined size and the same or substantially the same amount of protrusion. The rectification-required portion 2 is a portion where the detection portion of the detector, etc. is disposed, and the detection portion of the detector, etc. is supported by the support 4 in the vicinity of the centerline (r=0) of the fluid passage 1 . In Embodiment 1, the straight fluid passage is made at least from the inner protrusion to a position behind the part to be rectified (a position where no deviation or turbulence occurs in the flow of the part to be rectified).

[0024] The inner prot...

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PUM

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Abstract

The objectiv e is to obtain a straightening apparatus, having a small size and a highly straightening effect by eliminating disadvantages of a long straightening tube of the conventional straightening apparatuses, using the straightening tube and having high-straightening effect and of low-straightening effect of the conventional straightening apparatuses using a net. A straightening requisite site 2 is disposed in a straight fluid passage 1, and inward protrusions 3 or 3A, 3B are arranged in the passage at an upstream of the site 2. Inward protrusions 3C, 3 may be arranged in the passage of the upstream or downstream side of the site 2. Using such a simple constitution, the high-straightening effect, having no disorder or deflection in the flow, is exhibited at the site 2.

Description

technical field [0001] The present invention relates to a rectifying device and a flowmeter for rectifying the flow of fluid in a portion to be rectified (for example, a portion where a detection unit of a measuring instrument is disposed) in a fluid passage. Background technique [0002] For example, in a flowmeter with a flow detection part arranged on the inner peripheral surface of the fluid passage, an elbow is connected to the upstream side of the flow meter, and when a deflection or turbulent flow occurs in the flow of the fluid near the flow detection part, it will cause Measurement error. In order to prevent measurement errors, a rectification device is used to rectify the flow of fluid in the fluid passage in the flowmeter. As the rectification device, there is a device in which a net is arranged on the entire cross-section in the fluid passage upstream and downstream of the flow detection part, and a rectification tube (inner diameter and fluid passage of the mea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/00F15D1/02G01F1/50G01F1/684G01F15/12
Inventor 许宏庆谢峻石李杰杨岱强
Owner SMC CORP