摘要:
A non-contact seal for rotatable shafts includes a stator ring and a rotor ring with internal pumping discs. Each of the, the stator ring pumping discs, and the rotor ring is split diametrically into two halves for mounting on a rotatable shaft at an intermediate station without having access to the end of the shaft or without having to remove other components. Various sealing components are employed between the split rings to prevent fluids within the seal from leaking out.
摘要:
On a hydraulic shaft sealing arrangement for high-temperature applications, a heat protection ring (21) and an air chamber (22) are arranged before the annulus (8) containing the sealing medium (10) for thermal insulation, while spacers (16, 17) for the generation of a pumping action are provided in the annulus continuously supplied with fresh sealing medium (oil) to accelerate liquid transport. The hazard of coking and oil carbon deposition is thereby minimized. A split design of the annulus with an inserted annular ring also provides for an improved hydraulic shaft sealing arrangement optimized for weight, overall height, manufacture and assembly time.
摘要:
A beverage bottling plant for aseptic filling of beverage bottles with a liquid beverage filling material. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
摘要:
The present invention relates to a seal assembly for use in a rotary machine. The seal assembly comprises a first member and a seal carrier mounted to the first member by a mounting member, a second member spaced from the first member and a seal running member positioned on a second member, and a hydraulic seal for preventing gas leakage from a high pressure source to a low pressure compartment through the mounting member.
摘要:
This invention sets forth a commercially viable diesel combustion system that meets environmentally acceptable levels of NOx emissions (i.e. 0.2 g/bhp-hr or lower across a full map of engine speeds and loads) without the need for use of NOx aftertreatments, and simultaneously maintains engine-out PM emissions relatively close (e.g. with smoke levels at or below 3 BSN) to environmentally acceptable PM post-aftertreatment levels. The invention achieves these results by operating within a unique combination of parameters. These parameters comprise: (1) charge-air oxygen concentration below 16%, preferably between 10% and 15%, more preferably between 11% and 14%, and most preferably between 12% and 13.5% for virtually all engine operating conditions (but not necessarily at no-load or low load conditions), (2) fuel injection pressures at or exceeding 1800 bar, preferably exceeding 2100 bar, more preferably exceeding 2300 bar, and most preferably exceeding 2500 bar, at most engine speeds and loads, and (3) charge-air mass/fuel mass ratio between 25:1 and 45:1 for medium and high loads. Furthermore, the system is preferably run continuously slightly lean of stoichiometry, providing just enough excess oxygen to facilitate completeness of combustion and to maintain an exhaust oxygen level sufficient for continuous trap regeneration at a balance point in operation.
摘要:
A method of operating an internal combustion engine wherein intake ambient air is boosted to a higher pressure by passage through at least one compressor and then introduced into the internal combustion engine. Fuel is also introduced into the internal combustion engine for providing combustion in admixture with the air charge at a combustion temperature approximating a target value. Various engine operating parameters, inclusive of torque demand, e.g., accelerator pedal depression, are sensed and the boosted pressure is changed in a manner proportional to a change in the sensed torque demand so as to maintain the combustion temperature at approximately the target value, i.e., below 2100° K.
摘要:
A rotary shaft seal is provided with a sealing fluid to seal a process fluid. The sealing fluid is admitted at a pressure just slightly higher than the pressure of the process fluid to provide a seal when the shaft is stationary and means are provided in the seal to increase this pressure as a function of rotation, with centrifugal force, to a sufficiently higher pressure than that of the process fluid pressure to prevent entrainment of the process fluid within the sealing fluid. A stable sealing fluid pressure decreasing means is provided in the seal which is also a function of rotation and which decreases the sealing fluid pressure with centrifugal force from the pressure in the high pressure area to the pressure of the process fluid at the process fluid-sealing fluid interface.