Abstract:
Die Erfindung betrifft ein Verfahren zum Betreiben einer Strömungsmaschine mit mindestens einer Strömungsmaschinen-Stufe. Gemäß dem Verfahren werden folgende Verfahrensschritte durchgeführt: a) Erfassen einer zeitlichen Änderung eines Drehmoments der Rotations-Welle und b) Verändern mindestens eines Betriebsparameters der Strömungsmaschinen-Stufe in Abhängigkeit von der zeitlichen Änderung des Drehmoments. Vorzugsweise wird das Drehmoment magnetoelastisch gemessen. Darüber hinaus wird eine Strömungsmaschine mit mindestens einer Strömungsmaschinen- Stufe angegeben, die mindestens eine Rotations-Welle aufweist, wobei die Strömungsmaschine eine Vorrichtung zur Durchführung des Verfahrens aufweist. Die Strömungsmaschine ist beispielsweise ein Turboverdichter, der mehrere Verdichter-Stufen (Strömungsmaschinen-Stufen) aufweist. Jede der Verdichter-Stufen kann separat geregelt werden. Mit der Erfindung sind effiziente Pumpbegrenzung und effizienter Pumpschutz möglich.
Abstract:
The present invention pertains to a quick-release vacuum pump, which is designed to quickly release a vacuum and negative pressure formed by a device. The vacuum pump according to the present invention includes a release section and a filter material in addition to a pump section. The release section includes: a supporting pipe formed at the upper side of a casing suction hole; a skirt-shaped check valve for opening and closing the upper side of the supporting pipe by vertical movement due to air pressure; and a pressure chamber formed at an end of a path, which communicates with an inlet and passes through a valve skirt. The filter material is disposed between the suction hole and the supporting pipe. The filter material passes exhaust air, which is sucked in at the time of the pumping operation, to the upper side so as to filter the same, and is cleaned by pressurized air, which passes to the lower side via the supporting pipe at the time when the pumping operation stops. According to the present invention, the vacuum pump may be simply designed and implemented in comparison with conventional designs which depend on electronic mechanisms. In particular, the release of the vacuum is carried out in a short time. In addition, the cleaning of the filter material may be appropriately carried out even without any additional cleaning.
Abstract:
L'invention porte sur une installation de distribution de vide comprenant une ligne principale de vide (11) comprenant un orifice d'entrée (11a) et un orifice de sortie (11b); au moins une pompe à vide (4); une ligne annexe de soutirage de vide (12) raccordée fluidiquement, via une extrémité amont (12a), à la ligne principale de vide (11) et via une extrémité aval (12b), à la pompe à vide (4); un capteur de pression (10) comportant une prise de pression gazeuse raccordée fluidiquement à la ligne principale de vide (11); et un système de pilotage (5) raccordé au capteur de pression (10) et commandant ladite une pompe à vide (4) en réponse à au moins une mesure de pression opérée par le capteur de pression (10) au sein de la ligne principale de vide (11).
Abstract:
The invention relates to a gas turbine composite workpiece (10), notably a workpiece (10) forming a part of a gas turbine casing. The workpiece (10) comprises least two components (12, 14, 14a) joined by at least one weld seam (40, 42). In order to reduce thermal stresses of the workpiece (10) during operation, the weld seam (40, 42) is interrupted by at least one aperture (46). In order to reduce the exchange of gasses between the workpiece's (10) sides, the workpiece (10) may be equipped with means (70) for preventing gas flow through the aperture (46).
Abstract:
An apparatus (40) for measuring erosion of an edge (32) of an aerofoil portion (30) of a fan blade (26) comprises a laser source (42) to direct light at a position on the edge (32) of the fan blade (26). A detector (44) detects light reflected from the position on the edge (32) of the fan blade (26). A computer (480 measures the distance from the laser source (42) to points on the edge (32) of the fan blade (26) to produce a profile of the edge (32) in terms of x and z coordinates. The computer (48) calculates the radial distances of points on the edge (32) of the fan blade (26) from a centroid of the profile. The computer (48) detects local peaks (P) in the distance of points from the centroid of the profile. The computer (48) selects two local peaks (P1, P2) with the greatest distance there between. The computer (48) determines the distance (D1) between the two local peaks (P1, P2) and compares the determined distance (D1) and a predetermined distance to determine if there is unacceptable erosion.
Abstract:
The invention relates to a compressor system (16) for the compressed air supply of a utility vehicle (14), wherein said compressor system (16) comprises a compressor (18) for compressed air generation, a transmission (20) for transmitting torque from a drive motor (12) to said compressor (18), a clutch (22) for disconnecting the connection between compressor (18) and drive motor (12), and a control unit (10) for opening and closing said clutch (22). According to the invention, it is provided that the control unit (10) is capable of opening the clutch (22) in the event a settable maximum allowed compressor speed or motor speed of the drive motor (12) is exceeded and to close the open clutch (22) temporarily when the motor speed is greater than the maximum allowed motor speed. Furthermore, the invention relates to a method for controlling a compressor system.
Abstract:
Disclosed herein are turbocharger systems and methods for their operation. In one embodiment a turbocharger system is disclosed. The turbocharger system comprises a turbine, a compressor, an air inlet, a first sensor, a second sensor, and a controller. The turbine is mechanically connected to the compressor and the air inlet is connected in fluid communication to the compressor. The first sensor and the second sensor are connected in operational communication with the air inlet and disposed a sufficient distance from one another to be capable of measuring a temperature differential caused by a hot boundary layer. The controller is connected in operational communication with the first sensor and the second sensor, and the controller is configured to detect surge precursors.