SU877647A1

SU877647A1 - High-voltage electric apparatus

Info

Publication number: SU877647A1
Application number: SU802883544A
Authority: SU
Inventors: Павел Денисович Андрейчук; Виктор Антонович Луковец; Роман Иванович Гордиенко
Original assignee: За витель .i-«,K В.А.Луковец и Р.И.Гордиенкб ., ,- ) - ,,
Priority date: 1980-02-18
Filing date: 1980-02-18
Publication date: 1981-10-30

Description

(54) ВЫСОКОВОЛЬТНЫЙ ЭЛЕКТРИЧЕСКИЙ АППАРАТ(54) HIGH-VOLTAGE ELECTRICAL APPARATUS

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Изобретение относитс к констоук ци м высоковольтных электрических аппаратов,This invention relates to cones of high-voltage electrical apparatus,

Известны высоковольтные электри-. ческие аппараты, содержащие расположенные на открытом воздухе токоведущий контур о подвижным и неподвижным контактами, первый из кОторых выполнен в виде контактного стержн с возвратно-поступательным движением, а второй - в виде закрепленной на неподвижном основании контактной розетки Cl. ЛKnown high-voltage electrical. Medical devices containing an open-ended current-carrying circuit with movable and fixed contacts, the first of which are made in the form of a contact rod with a reciprocating motion, and the second in the form of a contact socket Cl mounted on a fixed base. L

недостатком известных конструкций вл етс то, что в начальном периоде отключени дл выхода токоведущего стержн из контактной розетки и, следовательно , преодолени сил трени ламелей розетки об токоведущий стержень к нему необходимо приложить сравнительно большие усили Так как через токоведущий контур электричесг кого аппарата протекают токи большой величины, дл уменьшени нагоева контактные давлени ламелей розетки на стержень должны быть значительны. При передвижении токоведущего стержн эти давлени и вызывают большие силы трени . Поэтому начальна скррость отключени незначительна и процесс отключени может зат гиватьс , что неблагопри тно будет сказыватьс на услови х коммутации и эффективности дугогашени , св занного с подвижным контактным стержнем дугогасительного устройства.A disadvantage of the known constructions is that in the initial period of disconnection to release the current-carrying rod from the contact socket and, therefore, to overcome the friction force of the socket lamellae, the current-carrying rod requires relatively large forces to be applied. Since large currents flow through the current-carrying circuit of the electrical apparatus , to reduce the nagoi contact lamella contact pressure on the rod should be significant. When moving a current-carrying rod, these pressures also cause great friction forces. Therefore, the initial shutdown rate is insignificant and the shutdown process may be delayed, which will adversely affect the switching conditions and the arc suppression efficiency associated with the moving contact rod of the arc suppressor.

Таким образом, дл успешного отключени электрического аппарата тре10 буетс в зависимости от конкретной конструкции аппарата повышение мощности отключающих пружин, что влечет за собой повышение включающей мощности привода, или же применение привода Thus, for successful shutdown of an electrical apparatus, depending on the specific design of the apparatus, an increase in the power of the breaking springs is required, which entails an increase in the switching power of the drive, or the use of a drive

15 с повышенной в начальный период отключени мощностью- Вместе с тем в конце операции включени подвижные части аппарата обладают значительным запасом кинетической энергии, вызываю20 щей механические удары, что приводит к повышенному механическому износу, а в отдельных случа х и к поломке элементов аппарата. Поэтс у дл частичного поглощени этой энергии обыч25 но примен ют специальные демпферные устройства.15 with increased power in the initial period of shutdown. However, at the end of the switching-on operation, the moving parts of the apparatus have a considerable reserve of kinetic energy, causing mechanical shocks, which leads to increased mechanical wear and, in some cases, to breakage of the components of the apparatus. Therefore, special damping devices are commonly used to partially absorb this energy.

Claims

The purpose of the invention is to improve the switching conditions, reduce the impact of the RU-30, increase the efficiency and reliability of the arc suppression without increasing the power of the drive used. The goal is achieved by having a hole in the fixed base of the contact socket coaxially with the contact rod and an additional rod installed in it, and a bracket is fixed in the upper part of the fixed base of the socket, moreover, between the base and the bracket coaxially with the indicated hole and the additional rod a cylindrical spring is installed, with one end abutting against the top of the bracket and the other against the specified additional rod, driving it into interaction at the end of switching on and the beginning of switching off In the drawing, the contact shaft is shown a high voltage electrical apparatus. The proposed apparatus is a rigid structure containing a current-carrying circuit with movable and fixed contacts located in air. The movable contact of the circuit is made in the form of a vertically mounted contact rod 1 with a reciprocating motion. The fixed contact is made in the form of a multidiscipline socket 2 mounted on a fixed base and installed in the upper part of the electric apparatus. In the lower part of the device, a sliding or roller current collector 4 is installed, through which the contact rod passes through the latter by means of cable 5 and lever 6, connected to the shaft 7 of the mechanism of the device, which is connected to actuator 11 through arms 8 and cable 10. The arcing device of the apparatus, consisting of an arcing chamber of a stationary rosette contact, a movable arcing contact rod, current collection, and other elements, is placed in an insulating body 12 filled with transformer oil. An aperture 13 is made in the fixed base of the contact socket coaxially with the contact rod 1. An additional rod (or rod) 14 is installed in this hole. For it is determined by the conditions of operation of the apparatus. A clamp 15 is fixed to the base of the socket 2 in its upper part. A cylindrical spring 16 is installed between the base of the socket 2 and the clamp 15 coaxially with the hole 13 and the additional rod 14, with the other end abutting the apex at the top 15, and the other end against the stop 14. The kinematics of moving the main current-carrying contact rod and the suppressive contact rod are selected in such a way that, when turned on, the main current-carrying contacts of the device close somewhat later than the arcs, and when disconnected about before. When the electrical apparatus is switched on, the arcing contacts are first closed, which are placed in the insulating housing 12. The arrangement, the arcing contacts of their structures, as well as the design of the arcing device in general, may be different. Then the main current-carrying contact rod 1 enters the contact socket 2 and acts on the additional rod 14. Having a significant stock of kinetic energy along with other moving parts of the device, the contact rod 1 moves the additional rod 14 to the upper extreme position, simultaneously compressing the cylindrical spring 16. In this way, a part of the kinetic energy is transformed into potential shock loads in the apparatus, significantly reduced, in the switched on position the moving elements of the apparatus ivayuts locking drive device (not shown). When the apparatus is disconnected, an additional rod 14 under the action of the potential energy of the coil spring 16, acting on the contact rod 1, accelerates its exit from the contact socket 2, helping the disconnecting springs or actuator to disconnect the apparatus. Moreover, when the device is switched on and off, the additional rod 14 contacts the rod 1 only in a predetermined portion of the stroke, which is determined by the operating conditions of the device. The use of the proposed device in comparison with the known allows improving switching conditions, increasing the reliability and efficiency of the arcing device associated with the moving contact rod, reducing the shock loads in the apparatus, simplifying and eliminating the use of damping devices in some cases. There is also no need to increase the power of the opening springs or the actuator, as done in the known device. Therefore, the invention will find wide application in various types of electrical apparatus. The invention is a high-voltage electrical apparatus containing a current-carrying circuit with movable and fixed contacts, the first of which is made in the form of a contact rod with a reciprocating motion, and the second in the form of a contact socket fixed on a fixed base, which