초록 ▼

A valve arrangement is provided for a feed line to supply fuel from a tank to a combustion engine consisting of a valve housing with an inlet channel and outlet channel, and a valve with a movable valve head to seal the outlet channel from the inlet channel, whereby a feed pump is assigned to the fe

A valve arrangement is provided for a feed line to supply fuel from a tank to a combustion engine consisting of a valve housing with an inlet channel and outlet channel, and a valve with a movable valve head to seal the outlet channel from the inlet channel, whereby a feed pump is assigned to the feed line, and the valve head is in closed position when there is no feed pressure from the feed pump. The danger of feed line leakage for combustion engines that burn liquid fuel is eliminated using a coaxial second valve using no additional space to solve the problem. The other essentially coaxial valve within the main valve is in open position opposite the feed direction when the pressure at the outlet channel is greater than the feed pressure. The valve arrangement functions as a check valve when the combustion engine is running, and as an overpressure valve when it is off. The solution does not requiring additional installation space, and can be economically integrated into existing fuel systems without any substantial installation effort.

대표청구항 ▼

A valve arrangement is provided for a feed line to supply fuel from a tank to a combustion engine consisting of a valve housing with an inlet channel and outlet channel, and a valve with a movable valve head to seal the outlet channel from the inlet channel, whereby a feed pump is assigned to the fe

A valve arrangement is provided for a feed line to supply fuel from a tank to a combustion engine consisting of a valve housing with an inlet channel and outlet channel, and a valve with a movable valve head to seal the outlet channel from the inlet channel, whereby a feed pump is assigned to the feed line, and the valve head is in closed position when there is no feed pressure from the feed pump. The danger of feed line leakage for combustion engines that burn liquid fuel is eliminated using a coaxial second valve using no additional space to solve the problem. The other essentially coaxial valve within the main valve is in open position opposite the feed direction when the pressure at the outlet channel is greater than the feed pressure. The valve arrangement functions as a check valve when the combustion engine is running, and as an overpressure valve when it is off. The solution does not requiring additional installation space, and can be economically integrated into existing fuel systems without any substantial installation effort. the second refrigerant. 8. A method according to claim 7, wherein the second refrigerant is nitrogen. 9. A method according to claim 1, wherein crushing the cooled, shredded material includes crushing with a hammer mill. 10. A system for grinding an elastomeric material with liquefied natural gas, the system comprising: a. a supply of liquefied natural gas; b. a heat exchanger for transferring heat from the material to the liquefied natural gas for creating cryogenically glassified material; c. a mill for grinding the cryogenically glassified material into ground material; d. a transporter for removing ground material; and e. a distribution network for providing vaporized natural gas to customers. 11. A system according to claim 10 wherein the heat exchanger comprises a container to which liquefied natural gas is added and from which natural gas is removed and to which material is added and from which cooled material is removed. 12. A system according to claim 10, wherein the heat exchanger comprises: a. a pipe into which the material enters at one end and from which cooled material leaves at the other end; and b. a jacket surrounding the pipe having an input into which liquefied natural gas enters and an output from which a combination of liquefied natural gas and natural gas is extracted.