Vortex flowmeter

Patent metadata

Field	Value
Publication number	US-2021072065-A1
Application number	US-201816644829-A
Country	US
Kind code	A1
Filing date	Aug 24, 2018
Priority date	Sep 25, 2017
Publication date	Mar 11, 2021
Grant date	—

Abstract

In this vortex flowmeter provided with a vortex generator and a flow rate measuring unit, a seal member is mounted on a temperature sensing element including a temperature sensor adhered with an adhesive to a metal temperature sensing case. The temperature sensing element is inserted into a first insertion hole formed in a body case so as to communicate with a body passage. A distal end surface of the temperature sensing element is arranged in either a position where the distal end surface is flush with the passage surface of the body passage formed in the body case or a position more outside than the passage surface in the radial direction of the body passage.

First claim

1 . A vortex flowmeter comprising: a vortex generator; and a flow rate measuring unit placed downstream of the vortex generator and configured to detect a vortex generated by the vortex generator to measure a flow rate, the vortex flowmeter further comprising:
a temperature sensing element including a metal temperature sensing case and a temperature sensor adhered to the metal temperature sensing case with an adhesive; a body case including: a body passage in which the vortex generator is placed; and an insertion hole in which the temperature sensing element is inserted, the body passage and the insertion hole being communicated with each other; and a seal member mounted to seal between the temperature sensing element and an inner wall of the insertion hole, and wherein the temperature sensing element inserted in the insertion hole further includes a distal end face located close to the body passage, the distal end face being placed at either a position where the distal end face is flush with a passage surface of the body passage or a position more outside than the passage surface of the body passage in a radial direction of the body passage.

2 . The vortex flowmeter according to claim 1 , wherein
the temperature sensing case includes an accommodating hole configured to accommodate the temperature sensor, the accommodating hole extending in an axial direction of the temperature sensing case, and the temperature sensor is adhered in contact with an inner wall of the accommodating hole of the accommodating hole.

3 . The vortex flowmeter according to claim 1 , wherein the temperature sensing element is placed upstream of the vortex generator.

4 . The vortex flowmeter according to claim 2 , wherein the temperature sensing element is placed upstream of the vortex generator.

Assignees

• Ckd Corp

Inventors

• Ohshima Yasushi
• Eguchi Ryo
• Matsuura Takaharu
• Sakaki Yuki

Classifications

• G01F1/32 Primary

  using swirl flowmeters · CPC title

• G01K1/14

  Supports; Fastening devices; Arrangements for mounting thermometers in particular locations · CPC title

• G01K13/02

  for measuring temperature of moving fluids or granular materials capable of flow · CPC title

• G01F15/02 Primary

  Compensating or correcting for variations in pressure, density or temperature · CPC title