30 results about "Entry pressure" patented technology

The invention relates to a method for monitoring the efficiency (Eta pol n) of a compressor (1), in which a mass flow, an entry pressure (Pe n), an exit pressure (Pa n), an entry temperature (Te n), an exit temperature (Ta n) of the process medium are determined and a performance factor is ascertained. In order to improve the accuracy it is suggested that - at the inlet of each stage (4, 5, 6, 7), a stage entry temperature (Ten) and a stage entry pressure (Pen) are directly or indirectly measured as measurement parameters, - at the outlet of each stage, a stage exit temperature (Tan) and a stage exit pressure (Pan) are directly or indirectly measured as measurement parameters, and each stage (4, 5, 6, 7) is assigned a module (C421 to C424) which calculates a stage efficiency (Eta pol n), for example as polytropic stage efficiency, as performance factor from the measurement parameters using the calculation means.

A tire pressure monitor system is provided including a sensor housing forming an internal housing mount chamber. An air inlet port is formed on a housing side surface and is orientated parallel to the wheel rim rotational axis. A sensor assembly including an air pressure sensor element is mounted within the internal housing mount chamber. A filter element and a gasket element are positioned between the air pressure sensor element and the air inlet port. A potting material fills the internal housing mount chamber. The filter element and the gasket element creating an air pressure flow path from the air inlet port to the air pressure sensor element.

The invention relates to an improved porous membrane. The membrane including a sheet of expanded polytetrafluoroethylene. The sheet is porous and has a gas permeability of at least 0.2 CFM according to ASTM D737 testing. The gas permeability of the membrane changes by less than 30% when the membrane is exposed to a temperature of 180 DEG C for a time of one hour. The sheet also has an average Mullen Hydrostatic Entry pressure of at least 135 psi according to ASTM D751 testing. The average Mullen Hydrostatic Entry pressure is substantially unchanged after exposure to a temperature of 180 DEG C for a time of one hour. The membrane has a bubble point value that changes by less than 20% when the membrane is exposed to a temperature of 180 DEG C for a time of one hour.

Method for making a probabilistic determination of total seal capacity for a hydrocarbon trap, simultaneously considering both capillary entry pressure and mechanical seal capacity, and where capillary entry pressure is estimated by relating it directly to the buoyancy pressure applied by the hydrocarbon column to the top seal. The method thus considers the substantial uncertainty associated with input parameters, which uncertainty limits the utility of such analyses for robust hydrocarbon column height and fluid contact predictions. The method disclosed for estimating seal capillary entry pressure, the requisite input parameter for capillary seal capacity analysis, by inverting trap parameters avoids the need for direct measurement by mercury injection capillary capacity tests on small pieces of rock, which test results often are not available for all desired locations nor are they necessarily representative of adjacent rocks in the seal.

Based on entry / exit pressures of a compressor detected by atmospheric / boost pressure sensors, a pressure ratio of compressor is calculated. Based on mass flow rate and entry temperature of intake air detected by intake air flow-rate / temperature sensors and entry pressure, a volumetric flow rate of intake air is calculated in environmental condition at a detection time using gas state equation, and is corrected into a volumetric flow rate under standard environmental condition thorough multiplication by a corrective coefficient based on entry temperature of intake air. Based on the corrected value and the calculated pressure ratio, a rotational frequency of compressor under standard environmental condition is read out in light of operating characteristic diagram for the compressor. Read-out rotational frequency is corrected into actual rotational frequency of the compressor through multiplication by a corrective coefficient based on entry temperature of intake air, which is determined as rotational frequency of turbocharger.

The invention discloses a preparation method of ultrafine decoction pieces of Morinda officinalis pure powder and the prepared product. Preparation method: after washing the fresh Morinda officinalis meat, dry it by freeze-drying technology, then crush the active ingredients of the dried Morinda officinalis meat to a particle size of less than 300 microns, and then ultrafinely pulverize it in an airflow mill to obtain the Morinda officinalis officinale The ultrafine decoction pieces of halberd meat pure powder, the conditions of ultrafine pulverization are: pulverization temperature 15-22°C, pressure when entering the ultrafine pulverizer is 1-2Mpa, pulverization pressure 2-6Mpa, air velocity 200-285m / s, the crushing time is 1‑3h. The oral preparation prepared by the preparation process has good drug effect, good dissolution property, good stability, high bioavailability, and improved odor and mouthfeel.

The invention discloses a waste magnetic suspension liquid processing method and device, wherein the method comprises four steps of coagulation, pre-filming, filtering and backwashing. The device comprises a raw liquid tank, a coagulating bath in conduct connection with the raw liquid tank through a sewage water pump and valves, a pre-filming tank in conduct connection with the coagulating bath through valves, a filter in conduct connection with the pre-filming bath through clean pumps and valves, and a pressure control apparatus for controlling the pressure difference between the entry pressure and outlet pressure of the filter.

The invention belongs to the technical field of the design of a nuclear reactor of a pressurized water reactor nuclear power plant, and particularly relates to an automatic measuring device for the assembly clearance of a radial support key. The automatic measuring device for the assembly clearance of the radial support key comprises a probe, a camera, a horizontal telescopic support, a vertical telescopic support and an installation platform. The camera is installed on one side of the probe. The other side of the probe is connected with the front end of the horizontal telescopic support. The rear end of the horizontal telescopic support is connected with the upper end of the vertical telescopic support. The lower end of the vertical telescopic support is connected with the installation platform. The automatic measuring device for the assembly clearance of the radial support key has the advantages of automatic measurement and high precision. A data acquisition device is controlled outside a pressure container so that the probe can be moved to measure the assembly clearance between different positions of the radial support key and a reactor core support block and the assembly clearance between the different positions of the radial support key and an insert of the radial support key; in this way, defects of manual measurement conducted by operation personnel in the prior art are overcome, and the limitation that the operation personnel must enter the pressure container to conduct measurement is avoided.

The invention discloses a method for detecting the pressure distribution in an oil cavity of a hydrostatic guideway. The method comprises the following steps: 1, hydraulic oil is sent by a hydraulic station into each oil cavity through an oil inlet channel and a throttling device, so that a guideway moving part can be floated; 2, the guideway moving part is moved to an oil cavity pressure measuring station, pressure oil in the oil cavity enters a pressure measuring channel, a pressure sensor takes a signal pressure signal as the input and begins to read the pressure value at a certain positon in the oil cavity, and the signal processing and the real-time display are performed; 3, after that, the oil cavity pressure of a corresponding position is recorded each time after the guideway moving part is moved by a small displacement, so that a curve of the pressure distribution in the oil cavity of the hydrostatic guideway can be obtained; and 4, according to the obtained curve of the pressure distribution, the impact of the pressure distribution in the oil cavity on the performance of the hydrostatic guideway is researched. According to the method disclosed by the invention, an oil cavity pressure testing point is arranged on the hydrostatic guideway, thereby effectively solving the problem about how to detect the pressure distribution in the oil cavity of the hydrostatic guideway.

A pressure vessel (10) includes a shell (18), a liner (20) and a boss (16). A liner (20) is positioned within the shell (18) and defines an interior environment (17). The boss (16) is located at a first interface (60) between the shell (18) and the liner (20). The boss (16) includes a cavity (27) and a vent structure (28) located in the cavity (27). The cavity (27) is located at the second interface (62) between the liner (20) and the boss (16), and the cavity (27) is located on the inner surface (31) of the boss (16), and the inner environment (17) connected. A gas discharge path (54) is defined from the first interface (60), through the vent structure (28), and into the interior environment (17) of the pressure vessel (10). The present disclosure also describes a boss (16) for a pressure vessel (10) and a method of making the boss (16). Boss (16) includes port (26), flange (24), chamber (27) and gas vent structure (28). The cavity (27) and gas vent structure (28) are located on the interior (37) of the flange (24).

The invention discloses a single-feed-cylinder capillary rheometer. A feed cylinder of the capillary rheometer is a single feed cylinder; the front end of the feed cylinder is provided with a plunger, the rear end of the feed cylinder is provided with a traveling nut, an electric heater is arranged around the feed cylinder, a long capillary die, a support part and a zero-length capillary die / short capillary die are arranged in the feed cylinder, and the outer diameter of the long capillary die, the outer diameter of the zero-length capillary die / short capillary die and the outer diameter of the support part all are matched with the inner diameter of the feed cylinder. The single-feed-cylinder capillary rheometer can be used for measuring extensional flow and shear flow parameters of polymer melt simultaneously, can eliminate entry pressure drop well, has the same function as a double-feed-cylinder capillary rheometer, and also has the advantages of saving raw materials, facilitating dismounting, purging easily, reducing artificial influences, realizing higher precision, and the like.