JPS6199017U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 shows a schematic configuration diagram of a Karman vortex flowmeter to which the present invention is applied, and Fig. 1A is a front sectional view thereof;
Figure B shows a side sectional view, Figure 2 is a schematic diagram of an embodiment of the present invention, Figure 3 is a schematic diagram of the leaf spring in Figure 2, and Figure A is its front view. Figure B is its plan view, Figure 4 is the overall configuration of the Karman vortex flowmeter, Figure 5 is a sectional view taken along line AA of the vortex generator in Figure 4,
Figure 6 is an enlarged cross-sectional view of the vortex detector viewed from the fluid flow direction, Figure 7 is a plan view of the vibrator, Figure 8 is a side sectional view of the vortex detector, and Figure 9 is the main part of Figure 8. Enlarged view,
10 and 11 are explanatory diagrams for explaining the problems of the embodiment shown in FIGS. 1 to 3. FIG. 11A is a front view of the leaf spring, and FIG. 11B is a plane view thereof. Figure 11C is a diagram of the spring angle addition state, Figure 12 is a schematic configuration diagram of the main parts of the present invention, Figure 1
Figure 3 shows a schematic configuration of the leaf spring in Figure 12, where Figure A is a front view, Figure B is a top view, Figure C is a state diagram of the spring angle added, and Figure D is a B-B of A.
14 is a schematic configuration diagram of the main parts of yet another different embodiment of the present invention, FIG. 15 is a schematic configuration of the leaf spring in FIG. 14, and FIG. 14A is a front view thereof. B is a sectional view taken along the line AA in FIG. A, and C is a partially enlarged view taken in the direction of the arrow P in FIG. 1: Pipeline, 2: Vortex generator, 3: Vortex detection section, 8:
Vibrator, 9: Diaphragm, 10A, 10B: Spun band, 38: Tension adding mechanism, 42: Space, 43
: Leaf spring, 44: Leaf spring restraining plate.

Claims (1)

[Claims for Utility Model Registration] 1. A vibrating member that vibrates in response to pressure fluctuations that alternately occur near both sides of a Karman vortex generator inserted into a fluid flow, and a vibrating member that supports this vibrating member. In the Karman vortex flowmeter, the Karman vortex flowmeter is equipped with a vibrator consisting of a pair of span bands that serve as rotational axes, and tension applying means for applying tension to the span bands of this vibrator, using a leaf spring as the tension applying means. A Karman vortex flowmeter characterized by: 2. In the flowmeter according to claim 1 of the utility model registration claim, the leaf spring is made of a single plate piece, one end is used as a fixed end, and the middle part is slightly bent in one direction with respect to the one end. and the other end is further bent in the same direction, and a rounded folded part is formed at the other bent end, and this folded part is brought into contact with the spun band. A Karman vortex flowmeter characterized by: 3 Utility Model Registration The Karman vortex flowmeter according to claim 2, characterized in that a reinforcing rib is formed on the bent portion formed at the other end of the leaf spring. 4 Utility Model Registration The flowmeter according to claim 2 or 3, characterized in that the intermediate portion of the leaf spring is formed to become narrower from the one end toward the other end. Karman vortex flow meter. 5 Utility Model Registration In the flowmeter according to any one of claims 2 to 4, a groove is formed in the contact portion of the folded portion with the span band, and the span band is inserted into the groove. A Karman vortex flow meter characterized by being guided by.