초록 ▼

The liquid jet cutting apparatus contains a cutter head with a nozzle block and a jet exit opening which communicates with a jet discharge passage. A jet of a pressurized liquid cutting medium is formed in the cutter head and the jet exiting from the jet exit opening passes through the jet discharge

The liquid jet cutting apparatus contains a cutter head with a nozzle block and a jet exit opening which communicates with a jet discharge passage. A jet of a pressurized liquid cutting medium is formed in the cutter head and the jet exiting from the jet exit opening passes through the jet discharge passage without contacting the wall thereof. The jet discharge passage communicates through an opening in its wall with a pressure transmission line connecting a gas space formed in the jet discharge passage with a pressure sensor. A transmitter is operatively associated with the pressure sensor and is operated when the pressure in the gas space of the jet discharge passage exceeds or drops below a predetermined pressure threshold value. The transmitter acts upon an actuator or control member of a cut-off device or throughflow regulator which is arranged in the liquid supply line which supplies the pressurized liquid cutting medium to the cutter head.

대표청구항 ▼

A liquid jet cutting apparatus comprising: a high-pressure installation for pressurizing a liquid cutting medium to a predetermined high pressure; a cutter head; supply lines connecting said high-pressure installation and said cutter head and supplying said pressurized liquid cutting medium from sai

A liquid jet cutting apparatus comprising: a high-pressure installation for pressurizing a liquid cutting medium to a predetermined high pressure; a cutter head; supply lines connecting said high-pressure installation and said cutter head and supplying said pressurized liquid cutting medium from said high-pressure installation to said cutter head; said cutter head containing a housing provided with a jet exit opening from which, during a cutting operation, there exits a liquid cutting jet formed by said pressurized liquid cutting medium; control means for controlling the supply of said pressurized liquid cutting medium to said jet exit opening; wall means defining a jet discharge passage and a gas space through which flows said liquid cutting jet formed by the pressurized liquid cutting medium; a pressure sensor connected to said gas space defined by said wall means and provided with means for adjustment of said pressure sensor to a predetermined pressure threshold value; said pressure sensor being responsive to the pressure prevailing in said gas space defined by said wall means; a transmitter operatively associated with said pressure sensor; warning means; and said transmitter operatively associated with said pressure sensor being operatively connected to said warning means and activating said warning means whenever said pressure prevailing in said gas space rises above or drops below said predetermined pressure threshold value to which said pressure sensor is adjusted, in order to thereby indicate an undesirable condition of said liquid cutting jet formed by said pressurized liquid cutting medium.