摘要:
An arrangement is disclosed for supplying power to a field device used to monitor an industrial process in a plant, having an enclosure and a wireless communications interface for data communications with a central data-processing device, and having a thermoelectric converter, which converts an existing heat flow between two points at different temperatures into electrical power and supplies this power to the field device. The thermoelectric converter is arranged in a separate enclosure from the field device, and transfers the electrical power to the field device by means of electrical wires or wireless transmission.
摘要:
An arrangement is disclosed for supplying power to a field device used to monitor an industrial process in a plant, having an enclosure and a wireless communications interface for data communications with a central data-processing device, and having a thermoelectric converter, which converts an existing heat flow between two points at different temperatures into electrical power and supplies this power to the field device. The thermoelectric converter is arranged in a separate enclosure from the field device, and transfers the electrical power to the field device by means of electrical wires or wireless transmission.
摘要:
The subject of the invention is a device for suppressing high frequency current or/and voltage components, applicable in protecting electrical equipment, especially against the effects of overvoltage in electrical power networks and stations. The inventive device is characterised in that it contains a series impedance element which is at least one magnetic core reactor (1, 2) whose magnetic circuit comprises at least two active parts on which the reactor windings (3, 4) are wound, which are connected with each other in series and anti-parallel.
摘要:
A protection system for a transformer system that includes three single phase transformers with auxiliary secondary windings, respectively. The auxiliary secondary windings are connected to form an open delta configuration. The protection system is connected into the open delta configuration, between the auxiliary secondary windings of two of the transformers. The protection system includes a circuit having an element with a threshold voltage and current characteristic connected in series with a thermal protection device and a resistor.
摘要:
The subject of the invention is a protecting system for medium-voltage potential transformers, finding application in the attenuation of ferroresonant states occurring in at least one of three potential transformers in a three-phase medium-voltage network. The system according to the invention features an element with a threshold voltage and current characteristic (1) and a thermal fuse (2), which are connected in series between an attenuating resistor (R1) and the output of the auxiliary secondary winding of one of the single-phase transformers.
摘要:
A device, located in a separator vessel having an inlet and a number of outlets, through which a mixture of fluids flows, for promoting electrostatic coalescence of a first conductive fluid emulsified in a second fluid, said device comprises a number of tubular electrostatic coalescer elements extending in the flow direction which are arranged in a matrix substantially covering the entire cross sectional area of said vessel, and means to apply an electrical field to the fluids flowing through said coalescer elements.
摘要:
The subject of the invention is a device for suppressing very fast transients (1, 1a, 1b), applicable in protecting electric and/or electric power equipment, and especially transformers operating in electric power substations and in wind power plants, connected in the supply network circuit downstream of the circuit breaker and upstream of the protected equipment. The device according to the invention is a component of an induction character (1, 1a, 1b), comprising a high-frequency magnetic core (2) arranged around the current-conducting lead (3). On the magnetic core (2) there is wound at least one winding (4, 4a) with at least one pair of terminals (6) used for connecting at least one damping resistor (7). The inventive device contains an insulating body (8) in which there is located a magnetic core (2) together with a damping resistor (7) and a winding (4,4a) or contains an insulating body (8a) in which there is located a magnetic core (2) together with a damping resistor (7), a winding (4,4a) and a section of a current-conducting lead (3).
摘要:
The subject of the invention is a protection system for voltage transformers, finding application in the attenuation of ferroresonant states occurring in voltage transformers in high and medium voltage grids. The system according to the invention contains a ferroresonance detection circuit (3), connected to the terminals of the secondary winding of the voltage transformer (2) and in parallel with a damping circuit (4), containing a switching means (6) connected in series with a damping burden (7). The system according to the invention contains a control block (5) connected to the switching means (6), characterised by that the control block (5) contains a PWM (Pulse Width Modulation) generator.
摘要:
The subject of the invention is a passive indicator of voltage presence used to indicate voltage in electrical conductors, electrically powered devices, power distribution devices and transmission lines of high, medium and low voltage. The indicator according to the invention is characterized in that it has form of a multilayer plate comprising two electrically conductive layers (2, 4) and an intermediate layer (3) of a structure manifesting electrooptical properties, located between them, wherein the intermediate layer is a display element of the indicator, while the conductive layers are electrodes of that display element and they are electrically connected by means of a diode (5), and one of the conductive layers is at least partially transparent. In one of variant embodiments of the indicator according to the invention, at least one of the conductive layers is divided into smaller conductive surfaces, separated from one another and being not in contact with each other, which adhere to the intermediate layer and are electrically connected with the other conductive layer or with its individual surfaces by means of diodes.
摘要:
The subject of the invention is a method and a device for monitoring the parameters of the aqueous phase in water-in-oil emulsion wherein oil is in continuous phase and water is in dispersion phase in the form of droplets, applicable for the optimisation of the water-in-oil emulsion separation process. The method according to the invention consists in exposing the examined emulsion flowing through a test section of a pipe to an electromagnetic field in a microwave resonator and measuring the dielectric loss of the emulsion in one of the measuring systems and a second test section of the pipe is selected with the water-in-oil emulsion flowing through the pipe, which is exposed to an electromagnetic field of a frequency markedly lower than the microwave radiation frequency, and the dielectric loss of the emulsion is measured in the second measuring system. The results of the measurements are transmitted to a computer control device wherein the results of the measurements obtained simultaneously in both measuring systems are compared. The device according to the invention is characterised by having two resonant measuring systems /A/ and /B/ coupled with one another by means of a computer control device /C/, and one of the resonant measuring systems /A/ has an electromagnetic radiation generator /2/ of microwave frequencies, while die other resonant measuring system /B/ has an electromagnetic radiation generator /7/ of a frequency markedly lower than the microwave radiation frequency.
摘要翻译:本发明的主题是一种用于监测油包水乳液中的水相参数的方法和装置,其中油处于连续相,并且水以液滴的形式处于分散相,适用于优化 油包水乳液分离工艺。 根据本发明的方法包括将流经管道测试部分的检查乳液暴露于微波谐振器中的电磁场,并测量其中一个测量系统中的乳液的介电损耗和管道的第二测试部分 被流经管道的油包水乳液选出,其暴露于明显低于微波辐射频率的频率的电磁场,并且在第二测量系统中测量乳液的介电损耗。 将测量结果传送到计算机控制装置,其中在两个测量系统中同时获得的测量结果进行比较。 根据本发明的装置的特征在于具有两个谐振测量系统/ A /和/ B /借助于计算机控制装置/ C /彼此耦合,并且谐振测量系统/ A之一具有电磁辐射 发生器/ 2 /微波频率,而其他谐振测量系统/ B /具有明显低于微波辐射频率的频率的电磁辐射发生器/ 7 /。