发明名称 |
DETECTION OF NOZZLE CLOGGING |
摘要 |
PURPOSE:To discover nozzle clogging in an early period without requiring considerable personnel expenses with such a nozzle which injects a liquid refrigerant to be cyclically used by detecting the resistance between a pair of electrodes provided in the injection range of the liquid. CONSTITUTION:For example, cooling water is forced to the two-fluid nozzles 2 by a pump 5 and air is forced thereto by a blower 6. The cooling water is made into fine water drops 6 by air jets and is injected from the nozzles 2 so as to be sprayed together with the air onto a hot steel sheet 3. The cooling water used to cool the hot steel sheet 3is recovered in a tank 4 and is supplied again to the nozzles 2 after cooling. A pair of the electrodes 11, 11' to be impressed with a voltage by a power source 12 are provided in water drop group 8. The resistance value to be determined by the cooling water exists between a pair of the electrodes if the nozzle 2 is normal and the cooling water exists between the electrodes 11 and 11'. The certain specified voltage is then measured by a meter 15. The voltage different from the above-mentioned voltage is measured by the meter 15 if the cooling water does not exist between the electrodes 11 and 11' as a result of the nozzle clogging. The clogging of the nozzle 2 is, therefore, discovered. |
申请公布号 |
JPS62174319(A) |
申请公布日期 |
1987.07.31 |
申请号 |
JP19860013710 |
申请日期 |
1986.01.27 |
申请人 |
MITSUBISHI HEAVY IND LTD;KAWASAKI STEEL CORP |
发明人 |
MAKIHARA KATSUMI;MIHARA KAZUMASA;TAKEMOTO MASARU;HIRAI KOICHI;SHIRAISHI NORIHISA;IDEMOTO AKIBUMI |
分类号 |
C21D1/00;B21B45/02;C21D9/573 |
主分类号 |
C21D1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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