Connecting device for electrical connection of two gas insulated high voltage units

 

The invention is intended for electrical connection between the two high-voltage gas insulated blocks switches and contains an insulating sleeve coaxially surrounding the connecting contact is made in the form of a rigid Central rod, which is fixed to two of the receiving contact in the form of a Tulip. The size of the rod corresponds to the distance between the two blocks, and each perceives the contact in the shape of a Tulip stands for the entire length of the end parts of the sleeve inside the bushing-shaped inner surface similar to the surface shape of truncated end parts. The technical result is increased reliability and service life. 5 C.p. f-crystals, 3 ill.

The present invention relates to a connecting device for electrical connection between the two blocks containing high voltage electrical switches and enclosed in two sealed metal housing filled with an insulating gas, the role of which usually performs sulfur hexafluoride, and contains: connecting the contact associated with its opposite ends with a pair of inserts made of provideadequate in two adjacent to each other of the openings, made in metal components two buildings, an insulating sleeve made of flexible elastomeric material surrounding a coaxial manner of connecting the contact and connector insert and having two end parts in the shape of a truncated cone, closely adjacent to the inner surface of the collet seats coupling, and means for hardening the insulating sleeve in the zone of connection of contact inserts to prevent internal electrical breakdowns.

Known devices of the above-mentioned type are described in the materials of French patent number 1362997 and patents EP for rooms 199249, 199208 and 520933. In this case, the connecting contact is made either in the form of an elongated tubular element connected with connectors, either in the form of a contact set type of pin and socket, located in the Central zone. The sleeve is made of flexible elastomeric material, can be reinforced through the use of the conductive metal tube that runs coaxial way around the connecting contact. Well-known design of this type is very convenient for use in conjunction with two of the unit is of very small tolerances in the manufacturing process. If not quite correct axial alignment bushings and inserts such electrical connection will be exposed to appreciable mechanical stress, which can lead to premature wear of the connecting device.

The aim of the present invention is to provide a reliable connection devices for electrical connections between the two high-voltage units that have a high dielectric resistance.

The connecting device in accordance with the present invention differs in that the connecting contact is in the form of a rigid Central rod made of conductive material and having a dimension along an axis approximately corresponding to the distance explode for two blocks, and two receiving pins in the shape of a Tulip, mounted on opposite ends of the Central rod and acting on the entire length of the location of the end parts in the shape of a truncated cone, sleeve, and means hardening.

In accordance with one example implementation of the present invention reinforcing means include an internal basis, on which is formed an insulating sleeve, the latter through noprecizets higher stiffness, than the material of the sleeve. The thickness of the inner framework surrounding the rod of the connecting contact is smaller in the Central part to save good Flex sleeves on the case is not quite correct axial alignment of the inserts.

In accordance with another preferred example implementation of the present invention means hardening are formed through the installation without radial clearance of cylindrical receiving contacts in the form of a Tulip inside the sleeve in direct contact with the inner surface of the sleeve, which is covered from the inside with a layer of conductive paint that allows you to provide a uniform distribution of the electric field. Two of the perceiver contact Tulip-shaped fixed on ball joints installed on opposite ends of the Central rod of the connecting contact.

Other advantages, characteristics and features of the present invention will become more apparent from the report below for detailed descriptions of three examples of its implementation, which are not restrictive in relation to the scope of the invention and are discussed with reference to the accompanying cerkezi, which depict the following: On pateniemi.

In Fig.2 shows a view identical to the view of Fig.1, but for the case of alternative embodiments of the present invention.

In Fig. 3 illustrates another alternative implementation of the present invention.

Refer now to Fig.1, which shows the connecting device 10 providing full electrical isolation and the presence of a directional electric field between two high-voltage blocks switches. The active part of each switch block is embedded in a hermetically sealed metal casing containing an insulating gas, the role of which in practice usually performs air or sulfur hexafluoride SF6. The connection is performed from the side of each of the buildings through the use of two metal components 12, 14 and must be sealed in order to avoid gas leaks.

The connecting device 10 includes a movable switching contact 16, is made of three parts and includes a rigid Central conductive rod 18 at the opposite ends of which are fixed two receiving contact in the form of a Tulip 20, 22. The movable contact 16 is enclosed in a sleeve 24 made of a flexible elastomeric material and sacrow 24, made of elastomeric material, provided with two end portions in the shape of a truncated cone, is shown in contact with the bushings 26, 28, and an intermediate connecting part with a reduced cross-sectional dimension.

Bushings 26, 28 respectively fixed on the components of the housings 12, 14, and the fastening is carried out either by using multiple screws, or by a nut 30. The necessary tightness for each housing is provided through the use of primaudaye to body " o " ring seal 32. The conductive paste 34, 36 are installed by securing to each of the sleeves 26, 28 and secure the connection between the movable contact 16 and an electric bus neighboring blocks, wherein the insertion of the electric current flowing through a specified value. Each insert 34, 36 is supplied with conical contact form to facilitate the docking contacts, the latter even in the case when the conditions for combining two units are far from ideal.

Bushings 26, 28 may include a metal screen coated with epoxy resin, which improves the electric field distribution in terms of the flow of electric current.

For preventing uchenogo cone, sleeve 24 is pressed bushings 26, 28 along the surface of their coupling 38. To this end, the sleeve 24 should be reinforced through the use of appropriate means of hardening acting on the inner diameter and on all site mates with the bushings 26, 28.

In the example illustrated in Fig.1, the mechanical reinforcement provided by the execution by overmolding sleeve 24 of a flexible elastomeric material based on 40 made of solid elastomeric material. The base 40 is less thick in the Central part, which allows to keep good flexibility for the whole structure.

The elastomeric material of the sleeve 24 is insulated, while the substrate 40, on the contrary, is conductive. Conductive rod 18 of the connecting pin 16 is under the potential of the bases 40, since the circular protrusions 42 of the latter are brought into contact with the cylindrical lateral surface of the Central rod 18.

The size of this Central part (core) 18 approximately corresponds to the size of the intermediate connecting portion of the sleeve 24.

Grounded semi-conducting layer 44 is applied by deposition or overmolding on the outer surface of the it influences.

Two receiving contact in the form of a Tulip 20, 22 movable contact 16 are fixed on two opposite ends of the rod 18 so as to ensure the ability to move when the two blocks are imperfectly stacked one against the other.

Refer now to Fig.2, where the hardening of the sleeve 24 is made in the form of perceiving cylindrical contacts in the form of a Tulip 20, 22, fixed on the inner diameter without radial clearance within the sleeve 24 for reinforcing the latter. Two receiving contact in the form of a Tulip 20, 22 are fixed preferred way on ball joints 46, 48 mounted on opposite ends of the conductive rod 18 movable contact 16.

The inner surface of the sleeve 24 in accordance with the example implementation illustrated in Fig.2, covered with a layer of conductive ink 50 to ensure uniform distribution of the electric field in terms of the flow of an electric current by moving the connecting pin 16.

In the context of two examples of implementation, illustrated in Fig.1 and 2, a rigid Central portion 18 of the connecting pin 16 is slightly greater than the size corresponding to raok 54, 56, which are made of insulating or conductive material and to which is supplied a potential phase, these tubes are operated on both sides of the sleeve 24 by means of pressing or reinforcement in elastomeric material.

Claims

1. Connecting device for electrical connection of two blocks containing high voltage electrical switches, enclosed in two metal housing filled with an insulating gas, typically sulfur hexafluoride containing the connection contact associated with its opposite ends with a pair of inserts made of conductive material and is pressed into the insulating sleeve mounted sealed in two adjacent to each other, the holes formed in the metal components of two buildings, an insulating sleeve made of flexible elastomeric material, coaxially surrounding the connecting contact and connector insert and having two end parts in the shape of a truncated cone, paired with their surfaces with the inner surfaces of the sleeves, having a similar form, means for hardening the insulating sleeve is s, characterized in that the connecting contact is made in the form of a rigid Central rod made of conductive material and having a size along the axis corresponding to the distance explode for two blocks, and two receiving pins in the shape of a Tulip, mounted on opposite ends of the Central rod and acting on the entire length of the end parts in the shape of a truncated cone sleeve and means hardening.

2. The connecting device according to p. 1, characterized in that the means of hardening include an internal basis, which is performed by overmolding the insulating sleeve of flexible elastomeric material, the base material is conductive and is characterized by a higher hardness compared to the elastomeric material of the sleeve.

3. The connecting device according to p. 2, wherein the base thickness is set smaller in the Central part surrounding the rod connecting the contact to maintain flexibility of the hose in case of discrepancy of positions of the axes of the inserts.

4. The connecting device according to p. 1, characterized in that the means of hardening are formed through the installation without axial clearance of the cylindrical receiving contacts who th inks to ensure uniform distribution of the electric field.

5. The connecting device according to p. 1, wherein the two receiving contact Tulip-shaped fixed to opposite ends of the Central rod connecting contact on the ball joints.

6. The connecting device according to p. 1, characterized in that the means of hardening contain a tube of insulating or conductive material, which run on both sides of the sleeve by pressing or reinforcement in elastomeric material.

 

Same patents:

FIELD: electrical engineering; connectors for cable including those used in explosive and gas-laden areas.

SUBSTANCE: proposed explosion-proof connector has plug section shroud and socket section shroud accommodating plugs and sockets, respectively. Cable conductors are soldered to plug pins and socket jacks and sealed in shrouds by means of sealing compound. Shrouds of plug and socket sections are joined together by threaded bracing bushing provided with lock nut to prevent their spontaneous turn-out. Translational movement of bracing bushing along connector axis is limited on one end by projection provided on socket section shroud and on other end, by lock ring. Socket section shroud has groove to receive packing.

EFFECT: simplified design, enhanced reliability of explosion protection due to reliable sealing.

1 cl, 1 dwg

FIELD: electrical engineering; high-voltage connectors for power distribution systems.

SUBSTANCE: connector shroud with through passage has first layer abutting against this passage, second layer enclosing first one and made of thermoplastic elastomer (TPE insulating material), and third layer enclosing second one and made of low-conductivity material (below 108 Ohm-cm) which can be also made of TPE material. TPE layers are press-fitted one on top of other.

EFFECT: facilitated manufacture, enhanced electrical characteristics.

23 cl, 13 dwg

Electric connector // 2306645

FIELD: electrical engineering.

SUBSTANCE: proposed electric connector has corrugated shielding member in the form of flexible bellows tightly closed on both ends with shrouds provided with through holes forming common space with inner cavity of bellows filled with mixture of neutrally reduced gases wherein electric conductor in the form of stranded wire is disposed to protect it against oxidation in chemically active medium at enhanced temperature, its conservative length being placed within bellows varying its length and shape when contact members are moving. Stranded wire ends are compressed to form washers with holes which are tightly secured by means of contact members within shrouds. Both ends of stranded wire are passed through shroud holes and secured therein by molding to allow for gas passage through space between wire strands.

EFFECT: enhanced resistance of connector to electric loads in chemically active media at enhanced temperature.

3 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: electric connecting element (1) for connection of at least a conductor (6) with a circuit board (10) comprises a body (2), at least one gripping connector (5) for the conductor (6), and also at least two connecting terminals (3) for a connection with the circuit board (10), preferably the one suitable for soldering. The body (2) on the lower side (2a) that faces the circuit board (10) in the mounting position has at least one protruding separating element (4) of an insulating material, which at least on sections between the connecting terminals (3) and in the mounting position passes through the circuit board (10). At the same time even in case there is a distance between the connecting terminals (3), which is less than prescribed by according standards for safe gaps, a sufficient protection is ensured against a hazard of breakthrough between the energised connecting terminals (3).

EFFECT: realisation of an electric connecting element with smaller dimensions.

19 cl, 8 dwg

FIELD: electrical engineering.

SUBSTANCE: plug-in HV input (D) serves for connection of a current lead to the HV installation component (T) filled with an insulating medium and encapsulated inside a metal housing. The input is designed to be rotationally symmetrical relative to axis (A) and contains a centrally position current lead (10), a field control device and (enveloping the current lead) an insulator (20) with a tapering section (21) that, after the input (D) insertion into the plug-in part (60) covering the component (T) in a manner impermeable for the insulating medium, dielectrically strengthens the gap (F) positioned between the plug-in part (60) insulating bushing (64) and the insulator (21) tapering section. The field control device is designed as a capacitor roll (40), the capacitor roll (40) containing capacitor armatures (41) electrically insulated from each other, retained (in the radial direction) by an insulating film (42) with a gap relative to each other and embedded into the insulator (20) by way of the capacitor roll (40) sealing in consolidated polymer mass; the capacitor armatures (41) pass through the installation flange (30) towards the insulator (20) tapering section (21).

EFFECT: creation of an input of comparatively simple and robust design, applicable for efficient control of active electric field in case of the input operating at very high operational voltages.

13 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: connecting surfaces (12) of a connecting electrode (10) have flat shape. Connecting devices (12, 12') comprise a conducting insert (24) in a crushable insulating elastomer (14), cast and coated with a screen (20). Connecting surfaces (26, 28) of conducting inserts (24) are arranged with displacement relative to connecting surfaces (16, 18) of an insulating support (14). After the connection has been made, insulating surfaces (16, 16') contact with each other, and compression is carried out, making it possible to implement an air impermeable connection, at the same time conducting surfaces (26, 26') enter in contact with each other. The unit is in compressed condition with the help of a central screw (50), which is preferably connected with a locking device (52), for the connecting surface (18), not used for electric connection.

EFFECT: simplified connection between electric devices, higher speed, flexibility and reliability of a connection due to simplification of an allowance for terminals arrangement, and provides for levelling by arrangement of connected poles.

19 cl, 4 dwg

Electrical element // 2524379

FIELD: electricity.

SUBSTANCE: electrical element includes two or more current-conducting elements, through which current flows, and an insulator retaining the corresponding current-conducting elements in an insulated state. Resistive body (13) is created in a circumferential direction of at least one of current-conducting elements (11) on surface of insulator (12). Resistive body (13) distributes voltage applied to surface of insulator (12) between two adjacent current-conducting elements (11), and as a result, difference of potentials, which is distributed along the surface of insulator (12), becomes equal to voltage of the beginning of the charge or is lower than it.

EFFECT: improving reliability of electrical element insulation.

14 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: invention relates to an insulator for a tight shell of a connector of end termination of an electric cable, which provides for electric connection between end termination of the cable (132, 134) and a domestic contact terminal. In accordance with the invention the insulator (100) comprises the first installation channel (102) to hold the domestic contact terminal (208) and the second assembly channel (104) to partially hold the cable (132, 134), besides, the second installation channel (104) has a contact area (112), in which in the mounted condition there is a cable tip located subject to electric contact impact, and a sealing area (114), which may become a support as capable of sealing of the end termination of the cable, and in which the central axis (118) of the sealing area (114) is located as shifted relative to the central axis (116) of the connection area (112).

EFFECT: higher tightness between a channel and a cable in a wide range of diameters of used cables.

18 cl, 23 dwg

FIELD: electricity.

SUBSTANCE: through connector (100) extends partially or completely through the hole in a wall (202) of underwater containers (200). The connector contains a conductive rod (102), with a conic part (104) with an external diameter increasing in a longitudinal direction (108), and also electrical insulator (136), with a conic part (138) with an internal surface (140), directed towards the conic part (104) of the rod, and with an external surface (142), opposing the internal surface (140), directed towards the conic part (104) of the rod. The outer diameter (144) of the surface (142) of the conic part (138) of the insulator is increased in a longitudinal direction (108), which passes from internal space (204) of the container towards external space (206).

EFFECT: improvement of leakproofness of connection and prevention of the connector destruction as a result of significant pressure drops between external and internal spaces of the container.

19 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: invention is referred to the connector with closed conductive parts comprised of cable assembly and connecting device, wherein screen of insulation and metal earthing are insulated from a part of outer semiconductor layer of the connecting device, which forms part of a chamber with at least a part of the cable assembly in it. The connector is applied to cross connection.

EFFECT: charge and heat accumulation is prevented in metal screening layer of cables in result of earth current passing through metal screening layer and leading to degradation of the cable.

15 cl, 10 dwg

Up!