摘要:
A method for fault detection in the operation of sensors with at least two decoupled signal-transmitting elements with contacts and with a closed conductor loop includes delaying, a first test output by a defined switching delay with reespect to a second test output and evaluating the input channels in accordance with a defined expectation. Faults being inferred from deviations between actual and expected signal variations and time intervals.
摘要:
In a switching center having input and output lines, a switching matrix includes primary switching elements, bus structures for respectively connecting one subset of input lines to the primary switching elements, and at least three assemblies each having some of the primary switching elements and at least one output interface. The primary switching elements are supported by a common supporting element and are connected on their input side to the subset of input lines by a same common bus structure. The interface input side is connected to primary switching elements of at least two of the assemblies connected to different subsets of input lines. The output interfaces are respectively disposed at the assemblies between the primary switching elements and a subset of output lines. Each of the assemblies has one of the output interfaces connected on its input side to primary switching elements of at least two of the assemblies.
摘要:
The Nuclear Power Plant Containment Construction includes the spherical steel safety enclosure for the reactor and the equipment associated with the reactor and requiring this type of enclosure. This steel enclosure is externally structurally protected against accident by a concrete construction providing a foundation for the steel enclosure and having a cylindrical wall and a hemispherical dome, these parts being dimensioned to form an annular space surrounding the spherical steel enclosure, the latter and the concrete construction heretofore being concentrically arranged with respect to each other. In the disclosed construction the two parts are arranged with their vertical axis horizontally offset from each other so that opposite to the offsetting direction of the concrete construction a relatively large space is formed in the now assymetrical annular space in which reactor auxiliary equipment not requiring enclosure by the steel containment vessel or safety enclosure, may be located outside of the steel containment vessel and inside of the concrete construction where it is structurally protected by the latter.
摘要:
The excitation winding arrangement for an electric machine with salient poles includes flat, disc-shaped coils wound of flat conductors in a single layer with insulated turns. The flat conductors are impregnated with a hardenable compound and are hardened so that the coils form self-supporting structural components which are placed over the insulated pole shank without additional mounting devices and are held with spacing relative to each other as well as to the yoke and pole shoe.
摘要:
A coupling arrangement is provided for a compressed-gas circuit breaker such as a high-voltage power breaker or the like having a contact system mounted in a gas-containing enclosure. An actuator rod connected to the contact system actuates the same and has a plunger portion extending from the enclosure. The plunger portion in turn is operated by a hydraulic drive having a piston rod. The coupling arrangement includes a coupling for connecting the plunger portion to the piston rod of the hydraulic drive and an air-filled housing for receiving the coupling therein. The housing is arranged between the hydraulic drive and the enclosure.
摘要:
The invention concerns nuclear reactors with replaceable fuel elements. According to the invention, parts of the reactor core burned up in a first nuclear reactor are used for the first core of a second nuclear reactor. This permits considerable savings, particularly in pressurized-water reactors.
摘要:
A contact member for high electrical loads has a plurality of component parts. One of these parts is made of a nonwelding material resistant to burn-off and another part is made of a solderable material having electrically conductive properties. The material of each of the parts is configured as a porous skeleton structure. The parts are disposed next to each other and an impregnating metal impregnates both of the parts to preclude the occurrence of a boundary layer at the interface of the parts.
摘要:
A new method is disclosed for preparing electrodes containing Raney nickel to be employed for the electrochemical conversion of hydrazine, in which a thiocyanate is introduced into the electrodes, advantageously by impregnating the electrodes with a thiocyanate solution. Electrodes prepared according to the invention generally contain a thiocyanate approximately in the range of between about 5 and about 25% by weight, based upon the amount of Raney nickel therein, and are useful as anodes in hydrazine/oxygen fuel cells.
摘要:
An X-ray diagnosis apparatus wherein the filament of the X-ray tube is connected to a tapping point of the secondary winding of the high-voltage transformer and provided with a time switch for determining the exposure time, is particularly characterized by a blocking circuit connected with the time switch and releasing it when the X-ray tube current, after the switching on of the X-ray tube, exceeds a predetermined amount. The blocking circuit contains a device for determining the change in the phase displacement between the primary current of the high-voltage transformer and the line voltage during the rise of the X-ray tube current.
摘要:
A contact arrangement is disclosed for a high voltage power circuit breaker wherein compressed gas is blown through the arc developed when the breaker is switched. The contact arrangement includes at least two contact pieces having respective hollow interiors for accommodating the discharge of the gas blown through the arc. Arcing electrodes between which the arc is drawn when the breaker is switched to the open position are electrically and mechanically joined to the contact pieces respectively. Each arcing electrode and the corresponding contact piece conjointly define an interface whereat the arc electrode is joined to the electrode piece. An electrically conductive supplement is contained in the electrodes in the region thereof next to the interface. The supplement comprises at least one metal and the arcing electrodes are made of carbon bodies and have a nozzle-like configuration. With the contact arrangement of the invention, increased mechanical strength is imparted to the graphite electrode and large differences in conductivity at the interface are obviated.