Venturi flowmeter
The utility model discloses a venturi flowmeter which comprises an upstream straight pipe with a flange, a downstream straight pipe with a flange and a throttling device. Grooves matched with the throttling device are formed in the upstream straight pipe with the flange and the downstream straight p...
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| Hauptverfasser: | , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a venturi flowmeter which comprises an upstream straight pipe with a flange, a downstream straight pipe with a flange and a throttling device. Grooves matched with the throttling device are formed in the upstream straight pipe with the flange and the downstream straight pipe with the flange, and the throttling device is clamped by the upstream straight pipe with the flange and the downstream straight pipe with the flange and fixed through studs. The throttling device is a porous throttling device, a central hole is formed in the middle, and a plurality of annular holes are formed around the central hole. Upstream and downstream chamfers, upstream fillets and downstream chamfers are carried out on the central hole and the annular hole. The upstream flanged straight pipe is provided with a pressure tapping port to obtain upstream pressure, and the middle of the throttling device is provided with a pressure tapping port to obtain throat pressure of the middle hole. The device is simpl |
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