Abstract: A coupling arrangement for connecting components, including a first and a second coupling part, where an end portion of the first coupling part is provided with an internal thread and an end portion of the second coupling part is provided with an external thread which is screwed into the internal thread of the first coupling part. A clamping sleeve is rotatably received on an outer surface of the end portion of the first coupling part, in which an inner surface of the clamping sleeve and the outer surface of the end portion of the first coupling part each have latch geometries which deviate from a circular geometry to provide, during a rotational movement of the clamping sleeve relative to the end portion of the first coupling part, an at least regionally elastic or elastic and plastic change in diameter for clamping the end portion of the second coupling part.

Abstract: A hinge arrangement having a first hinge part and having a second hinge part, which are connected to one another such that they can pivot, a first hinge pin being formed on the first hinge part, on which a first hinge sleeve is pivotably mounted, which forms a first sliding bearing with the first hinge pin, a dimensionally stable support part being connected to the first hinge sleeve. A first axial protrusion is formed on a first axial end face of the first hinge pin, which engages in an arcuate first groove of the first hinge sleeve, wherein a circumferential first side wall of the first groove together with the first axial end face and an inner side of an end cover fixed at the end of the first hinge sleeve delimits a working space which is filled with a damping fluid for damping a relative movement of the first axial protrusion with respect to the first groove.

Abstract: A linear accelerator system comprising a source arranged to produce a pulsed beam of charged particles, a linear accelerator string arranged to accelerate the pulsed beam up to a predetermined range of energies, and a pre-acceleration stage interposed between the source and the linear accelerator string and arranged to accelerate the pulsed beam up to an energy suitable for beam insertion into the linear accelerator string and perform bunching of the pulsed beam. An average current detector is arranged to measure an average current in the pulsed beam, the average current detector comprising at least one non-interceptive sensor placed at an input side of the linear accelerator string, downstream of the pre-acceleration stage, the sensor being responsive to the pulsed beam passing thereby.

Abstract: A linear accelerator system comprising a source arranged to produce a pulsed beam of charged particles, a linear accelerator string arranged to accelerate the pulsed beam up to a predetermined range of energies, and a pre-acceleration stage interposed between the source and the linear accelerator string and arranged to accelerate the pulsed beam up to an energy suitable for beam insertion into the linear accelerator string and perform bunching of the pulsed beam. An average current detector is arranged to measure an average current in the pulsed beam, the average current detector comprising at least one non-interceptive sensor placed at an input side of the linear accelerator string, downstream of the pre-acceleration stage, the sensor being responsive to the pulsed beam passing thereby.

Abstract: Fitting for fixing a threaded element to a wall section, including a base body which is penetrated by a recess, which recess is extended along a central axis, further including a clamping ring which is rotatably mounted on an outer surface of the base body, wherein a cam is assigned to the outer surface of the base body or to the clamping ring, which cam effectuates a change in diameter of the clamping ring during a rotary movement of the clamping ring relative to the base body, wherein a coupling part is movably received in the recess and forms with the base body a rotary coupling, wherein a threaded portion of the coupling part determines a thread axis, wherein the coupling part is accommodated in the recess with a variable orientation of the thread axis within a predetermined angular interval and/or within a predetermined distance interval to the central axis.

Abstract: A hinge arrangement having a first hinge part and having a second hinge part, which are connected to one another such that they can pivot, a first hinge pin being formed on the first hinge part, on which a first hinge sleeve is pivotably mounted, which forms a first sliding bearing with the first hinge pin, a dimensionally stable support part being connected to the first hinge sleeve. A first axial protrusion is formed on a first axial end face of the first hinge pin, which engages in an arcuate first groove of the first hinge sleeve, wherein a circumferential first side wall of the first groove together with the first axial end face and an inner side of an end cover fixed at the end of the first hinge sleeve delimits a working space which is filled with a damping fluid for damping a relative movement of the first axial protrusion with respect to the first groove.

Abstract: A linear accelerator system comprising a source arranged to produce a pulsed beam of charged particles, a linear accelerator string arranged to accelerate the pulsed beam up to a predetermined range of energies, and a pre-acceleration stage interposed between the source and the linear accelerator string and arranged to accelerate the pulsed beam up to an energy suitable for beam insertion into the linear accelerator string and perform bunching of the pulsed beam. An average current detector is arranged to measure an average current in the pulsed beam, the average current detector comprising at least one non-interceptive sensor placed at an input side of the linear accelerator string, downstream of the pre-acceleration stage, the sensor being responsive to the pulsed beam passing thereby.

Abstract: Removal of the rotor of a large electrical machine is costly and time consuming, and in particular the outage time of a power plant, which is needed for the removal of a generator rotor, is very expensive and should be minimized. To avoid opening of the generator for inspection and maintenance instrument carriages can be used. A method allows the reliable guidance for an in-situ instrument carrier inside the annular gap of a generator and a corresponding instrument carrier. The method avoids the use of sensors and active control systems for the guidance of the instrument carrier. A passively self-guiding system and method takes advantage of the internal structure of a generator and uses the passive centering properties of magnets to guide the instrument carrier through the annular gap of a generator.

Abstract: A method is provided for determination of an operating temperature in a thermally highly loaded device. Multiple individual passive measurement elements, having a measurable physical parameter depending on a constant temperature set during heat treatment, are provided. The parameter is set differently for each of the different measurement elements which are combined to form an array. In a first measurement, values of the physical parameter for the array are determined before the array is subjected to the operating temperature. The array is subjected to the operating temperature in the device and in a second measurement, values are determined for all the measurement elements in the array. First and second measurement values of the physical parameter for each of the measurement elements are compared and the temperature of the heat treatment of that measurement element whose value of the physical parameter has changed the least is taken as the measured temperature.

Abstract: A method for drilling or cutting a pin surrounded by solid material includes the use of a water jet tool having a nozzle that is arranged at an angle with respect to a main body of the water jet tool. The water jet is directed over a portion of the surface of the pin, and removes that portion thereby fragmenting the pin. In order to minimize damage to the surrounding material, the portions removed touches the interface between the pin and the surrounding solid material at a minimal number of points and over a minimal extent of the interface. The method is applicable in particular to the removal of pins used in a press-fit for the securing of blades on a turbine rotor. The method facilitates “in situ” removal of pins within a confined space in a short time and at reduced cost.

Abstract: An apparatus for inspection of a gap between two surfaces, at least one of which is ferromagnetic, for example in a generator, includes a sensor platform (26) for one or more sensors (26a) and an elongated mount (23), which can be moved out, for the sensor platform (26). The mount (23) can be moved in and out of the gap through an access opening, can be moved out over the length of the gap and can be rolled up outside the gap by a drive (24). In its moved-out state, the mount (23) has a curvature in a lateral cross section. In addition, the mount (23) has a plurality of magnets (27) by which the mount (23) is brought into contact with a ferromagnetic surface. The magnets (27) are attached to the side of the mount (23) facing away from the ferromagnetic surface, ensuring that the mount (23) slides along a ferromagnetic surface. The apparatus allows inspection of gaps from a height of 4 mm and is distinguished by a simple and physically small design.

Abstract: An automotive device for the inspection of internal spaces having ferromagnetic surfaces includes at least two magnetic wheels (3) or caterpillars, or at least two magnetic legs for the advancement of the device along the surfaces to be inspected. According to the invention, the device includes actively powered rotating arms (1) attached to a wheel (3), caterpillar, or leg of the device. Each rotating arm (1) has a length longer than the shortest distance between the point of attachment of the rotating arm to the device and the surface. When the device is in a position, where there is magnetic contact to the surface in two or more points and the device is no longer able to advance due to the strength of the magnetic forces, the rotating arms are brought into non-magnetic contact with the surface in order to create an air gap between the surface and the magnetic wheel and thus reduce the magnetic forces. The device is thereby enabled to overcome the magnetic forces and advance the device along the surface.

Abstract: A method for drilling or cutting a pin surrounded by solid material includes the use of a water jet tool having a nozzle that is arranged at an angle with respect to a main body of the water jet tool. The water jet is directed over a portion of the surface of the pin, and removes that portion thereby fragmenting the pin. In order to minimise damage to the surrounding material, the portions removed touches the interface between the pin and the surrounding solid material at a minimal number of points and over a minimal extent of the interface. The method is applicable in particular to the removal of pins used in a press-fit for the securing of blades on a turbine rotor. The method facilitates “in situ” removal of pins within a confined space in a short time and at reduced cost.

Abstract: A method for drilling or cutting a pin (31) surrounded by solid material (32) includes the use of a water jet tool (10) having a nozzle (11) that is arranged at an angle with respect to a main body (12) of the water jet tool (10). The water jet is directed over a portion of the surface of the pin (31), and removes that portion thereby fragmenting the pin (31). In order to minimise damage to the surrounding material, the portions removed touches the interface between the pin and the surrounding solid material at a minimal number of points and over a minimal extent of the interface. The method is applicable in particular to the removal of pins (31) used in a press-fit for the securing of blades (3) on a turbine rotor (1). The method facilitates “in situ” removal of pins within a confined space in a short time and at reduced cost.

Abstract: A drive unit (10) for an inspection vehicle which can be used on ferromagnetic bases (19), especially in generators, which drive unit includes a motor-powered crawler track (18) and also magnetic devices for holding the drive unit (10) on the base (19). An improved insensitivity to uneven spots in the base is achieved by the crawler track (18), in the region where it bears upon the base (19), being guided via inner, spring-mounted running wheels (12), and by the magnetic devices being integrated in the running wheels (12).

Abstract: An apparatus for inspection of a gap between two surfaces, at least one of which is ferromagnetic, for example in a generator, includes a sensor platform (26) for one or more sensors (26a) and an elongated mount (23), which can be moved out, for the sensor platform (26). The mount (23) can be moved in and out of the gap through an access opening, can be moved out over the length of the gap and can be rolled up outside the gap by a drive (24). In its moved-out state, the mount (23) has a curvature in a lateral cross section. In addition, the mount (23) has a plurality of magnets (27) by which the mount (23) is brought into contact with a ferromagnetic surface. The magnets (27) are attached to the side of the mount (23) facing away from the ferromagnetic surface, ensuring that the mount (23) slides along a ferromagnetic surface. The apparatus allows inspection of gaps from a height of 4 mm and is distinguished by a simple and physically small design.

Abstract: A method is provided for determination of an operating temperature in a thermally highly loaded device. Multiple individual passive measurement elements, having a measurable physical parameter depending on a constant temperature set during heat treatment, are provided. The parameter is set differently for each of the different measurement elements which are combined to form an array. In a first measurement, values of the physical parameter for the array are determined before the array is subjected to the operating temperature. The array is subjected to the operating temperature in the device and in a second measurement, values are determined for all the measurement elements in the array. First and second measurement values of the physical parameter for each of the measurement elements are compared and the temperature of the heat treatment of that measurement element whose value of the physical parameter has changed the least is taken as the measured temperature.

Abstract: The invention concerns an inertial sensor or an actuator based on diamagnetic levitation, said inertial sensor or actuator comprising support means serving as main support body for an inertial sensor or for an actuator, a two dimensional array of permanent magnets and a diamagnetic element facing the said array characterized in that said diamagnetic material constitutes the inertial mass or the moving part of the actuator.

Abstract: Removal of the rotor of a large electrical machine is costly and time consuming, and in particular the outage time of a power plant, which is needed for the removal of a generator rotor, is very expensive and should be minimized. To avoid opening of the generator for inspection and maintenance instrument carriages can be used. A method allows the reliable guidance for an in-situ instrument carrier inside the annular gap of a generator and a corresponding instrument carrier. The method avoids the use of sensors and active control systems for the guidance of the instrument carrier. A passively self-guiding system and method takes advantage of the internal structure of a generator and uses the passive centering properties of magnets to guide the instrument carrier through the annular gap of a generator.

Abstract: A method for non-destructive testing the teeth of a high power electrical generator rotor includes the steps of: providing a plurality of ultrasonic pulse echo transducers (22, . . . ,25) being arranged in an array (20), and being positioned and aligned in such a way as to provide a range of different inspection angles for the tooth geometry; positioning the array (20) on top of the rotor tooth; exciting at least one of the plurality of ultrasonic pulse echo transducers (22, . . . ,25) to produce a transmission beam for the interrogation of wedge angle on the underside of the tooth; and conditioning the acquired data from the at least one of the plurality of ultrasonic pulse echo transducers (22, . . . ,25) to capture reflection from the flaws within the tooth.