4 results about "Compressibility" patented technology

The invention provides a gas rubber roller for a spinning machine, which is provided with a mandrel, wherein a rubber gas bag is covered on the surface of the middle part of the mandrel; the two ends of the rubber gas bag are hermetically connected with the two ends of the mandrel; and a gas filling chamber is arranged between the middle part of the rubber gas bag and the mandrel. Gas is filled into the rubber gas bag hermetically connected with the mandrel to be combined with the flexible rubber in virtue of the compressibility of the air, so that the rubber roller can meet the demands of the flexibility and rigidity in spinning; as the cotton is light, the parallelism between the fibers is high, the quality of the yarn can only be ensured when the holding power at the jaws formed by the rubber roller and the rollers is identical, and the high elastic deformation of the gas rubber roller enables the strain and the stress to be balanced at one instant; and therefore the gas rubber roller has higher practical value.

Methods, devices and systems enhance compression and decompression of data values when they comprise a plurality of semantically meaningful data fields. According to a first inventive concept of the present invention disclosure, compression is not applied to each data value as a whole, but instead to at least one of the semantically meaningful data fields of each data value, and in isolation from the other ones. A second inventive concept organizes the data fields that share the same semantic meaning together to accelerate compression and decompression as multiple compressors and decompressors can be used in parallel. A third inventive concept is a system where methods and devices are tailored to perform compression and decompression of the semantically meaningful data fields of floating-point numbers after first partitioning further at least one of said data fields into two or a plurality of sub-fields to increase the degree of value locality and improve compressibility of floating-point values.

A method of surge protection for a dynamic compressor that has a corresponding compressor map. A control system continually calculates an equivalent polytropic head parameter in order to define a surge limit line. The system then calculates a control parameter and determines the distance the control parameter to the surge limit line wherein the control parameter is dynamic to changes in compressor load and invariant to changes in suction conditions and gas compressibility. As a result of the distance of the control parameter to the surge limit line, the surge valve of a dynamic compressor is actuated to prevent surge.