Abstract:
The invention relates to a coupling device for connecting line devices, preferably quick connector, having a coupling housing comprising a connecting device that can be connected to an end section of a line device or of a second connecting device, and a valve body which can be transferred from a closed position to an open position when the end section of the line device or of the second connecting device is brought together with the coupling housing. The valve body can be actuated by means of a force deflecting device by bringing the end section of the line device or of the second connecting device together with the coupling housing.
Abstract:
An automatic feeding apparatus for an aquarium has a housing, a supply drum rotatably supported in the housing and provided with a food discharge opening, a drive device arranged in the housing for driving the supply drum. The housing has an opening which is spaced from the food discharge opening and through which outer air is supplied. The drive device has a blower and operates so that the outer air is supplied into an interior of the housing and then into the supply drum and through the supply drum to the food discharge opening so that when the blower is immovable moist air rising in a region of the supply drum near the food discharge opening produces an underpressure in a region of the food discharge opening so that the outer air is aspirated into the housing, through the supply drum and out the food discharge opening, while when the impeller is actuated outer air is blown by an inner overpressure produced by the blower in the same direction through the supply drum out of the food discharge opening to operate as a blocking air stream.
Abstract:
The invention relates to a holding system (1) for mounting a photovoltaic module (6) to a base (8) by means of ground supports (2, 2a, 44, 44a) which comprise a bearing head (4, 4a, 50, 50a), a ground support body (22) and a bearing surface (28, 48) on the bottom side which counteracts a penetration of the ground supports into the base (8), wherein the ground supports (2, 2a, 46, 46a) comprise on their head side a bearing plate (14, 14′, 14a, 14a′, 54, 54′, 54a, 54a′) that is disposed at a slanted angle (α) in relation to the base (8), and wherein the ground supports (2, 2a, 46, 46a) are provided and prepared such that, in the mounted state, the bearing plates (14, 14′, 14a, 14a′, 54, 54′, 54a, 54a′) of a ground support pair (2, 2a, 46, 46a) are spaced apart from each other vertically in relation to the base (8) and from each other horizontally in adjustment to the photovoltaic module (6) and that they are aligned with each other at least in essence.
Abstract:
A photovoltaic generator is provided that has at least one string of multiple series-connected photovoltaic modules, each of which has a plurality of series-connected photovoltaic cells. One quarter to one half of all photovoltaic modules of the at least one string can be short-circuited by means of a switch. Activation of the switch takes place when a predefined voltage value across the string is exceeded. The shorting switch is only present in some of the arrays making up the photovoltaic generator, which reduces cabling costs. Because of the parallel connection of the arrays, the voltage of the arrays without shorting switches is drawn down to a lower voltage that is safe for the inverter.
Abstract:
A base frame for a parking lot roof equipped with photovoltaic modules is proposed, wherein two mirror-symmetrically constructed halves are provided, with each half having an inner arc constructed of three inner struts and an outer arc constructed of three outer struts, which are connected with each other by cross struts. The structure is light-weight and can be easily manufactured.
Abstract:
A method for operating a first energy generator in an electric power supply system to which a plurality of electric consumers and at least the first energy generator, which is embodied as a regenerative energy generator, are connected via respectively one grid connection point each assigned thereto, wherein at least the first energy generator has an inverter of predetermined power rating, the AC voltage output of which is electrically connected to a first grid connection point assigned thereto, and wherein the operating control of the inverter regarding its reactive power feed and/or its reactive power draw into or out of the electric power supply system takes place depending on a continuously measured mains voltage value. The reactive power control in the energy grid is improved in that the mains voltage value is measured at a second grid connection point, which is different from the first grid connection point of the energy generator.
Abstract:
The photovoltaic system includes a plurality of photovoltaic modules which are connected to form a string or several strings connected in parallel, thereby forming a photovoltaic generator having a positive terminal and negative terminal. A DC constant voltage source connected to the photovoltaic generator to raise the potential of the positive terminal relative to ground potential. This reduces the flow of electrons out of the TCO layer of the modules, thereby reducing or completely eliminating cathode discharges which damage the modules.
Abstract:
An apparatus and a method for preparing connection of a photovoltaic system (Q1) as a first energy source to a power grid (13) by way of a motor generator set (5, 6, 7) is presented. The DC motor (5) is coupled to a three-phase generator (7) by way of a shaft (6), wherein the three-phase generator (7) can be connected to the power grid (13). It has been observed that connecting this type of apparatus to the small or varying power output of the photovoltaic system (Q1) can be difficult and time-consuming. To enable a clean and quick connection, the DC motor (5) is powered with electric DC current from a second DC current source (Q2), wherein the operation of the three-phase generator (7) is matched to the conditions in the power grid (13) with the help of the second DC current source (Q2), and wherein the photovoltaic system (Q1) is connected to the DC motor (5) and the second DC current source (Q2) is disconnected from the DC motor (5) only after a complete match has been attained. This enables a quick and precise connection of the photovoltaic system (Q1) to the power grid (13) with defined parameters using the three-phase generator (7).
Abstract:
Monolithic carrier matrixes are formed from high grade steel, consisting of alternating smooth and corrugated layers of sheet metal and/or screen cloth, which may be combined with layers of smooth screen cloth or of smooth or corrugated sheet metal, wherein the layers may be coated on their surfaces with a catalysis-promoting carrier material. These carrier matrixes may be used to produce catalysts for the purification of exhaust gases.
Abstract:
There is disclosed a catalytic waste gas converter for internal combustion engines of various types in which there is used as carrier for the catalyst a carrier matrix made of a steel screen arranged in a housing holder. There are employed special flow guides made of spirally wound steel matrices for the various flow through possibilities favorable to conversion of the waste gas to be purified.