Electric connector

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

 

The technical field

The invention relates to electrical engineering, in particular to electrical connectors, and can be used to connect two conductive and gazoprovoda sites.

Prior art

Known electrical connector [USSR Author's certificate No. 1030895 from 02.04.82, CL H01R 13/44, publ. 23.07.83, author of Wababa VI "electrical connector"], contains two contact elements placed in their housings, and a protective element with corrugated walls.

The sealing function this connector is carried out by means of petals formed by slits in the protective element provides a sealing level only from dust and pollution. The protective element does not allow to separate and insulated from each other, two different gas environment, located in the inner channel and the outside when the connection is carried out in a device with a high operating temperature and at a pressure drop of gas atmospheres on the outside and in the inner channel of the electrical connector. When it is necessary to ensure the mobility of the contact elements relative to each other in any arbitrary planes with the change of the distance between them.

As the prototype was selected electrical connector [RF Patent №2226730 from 12.03.2003, CL NW 17/26, publ. 10.04.2004, auto who s in charge CENTURIES, Borodulin J.V., volberg MS and other "Line of electric utilities for the registration of nuclear radiation system control and protection of nuclear reactor], comprising a housing in the form of inputs, hermetically United with corrugated protective element in the form of flexible metal hose, the inner cavity of which is filled with a mixture of inert gas and contains a low noise cable, electrically connected to the contact elements by means of the buildings.

This electrical connector is not intended for large currents through aggressive environment, therefore, the flexible sleeve is secured with gamerevolt and subtlety going on inside sleeve of the cable. In addition, this electrical connector is not designed to change the distance between the contact elements which it connects, as it does not stretch, and only bends. It is enough for installation, but not enough for the operation, when the contact elements are shifted relative to each other in arbitrary planes with the change of the distance between them. Inert gases as a filler to protect the low power conductor from interference caused by radiation and high temperature.

Disclosure of the invention.

The task of the invention is to increase the stability of the electrical connector to IU is onionskin and electric loads in corrosive environments at elevated temperatures.

The technical result is to increase the stability of the electrical connector to a mutual displacement of the contact elements relative to each other in all planes by performing additional contact element in the form of stranded wires, laid with a stock inside of the bellows, which change their length and shape of the moving contact elements. Increase the stability of the electrical connector to the electrical loads in corrosive environments is through the use of stranded wire in the neutral environment of reducing gases, protecting it from oxidation in corrosive environment at elevated temperature.

This result is achieved that the electrical connector containing a tightly coupled with buildings corrugated protective element in an internal cavity which contains electrical conductors in the environment of gas connected to the conductive contact elements through buildings, according to the invention, the housings are formed through holes, which are combined with the internal cavity of the protective element made in the form of an elastic bellows, total and filled with a mixture of neutral reducing gases, where laid with a margin along the length of the electrical conductor in the form of stranded wire, the ends of which the CSOs formed in the form of washers, pressed and hermetically fixed in the holes of the buildings of the contact elements, in this case, the contact elements and the bellows are made of conductive material. In the first embodiment, the contact elements are in the form of bushings without holes. In the second embodiment, the contact elements are in the form of bushings with holes.

The implementation of the connector housings of the conductive material forms the outer conductors: pin elements - case - bellows. However, when using the connector at elevated temperatures mentioned conductors has a large electric resistance, which prevents the holding of large values of the currents. To reduce the electrical resistance of the connector housing on the inside of the bellows connecting the flexible electrical conductors from a material with higher conductivity than that of the bellows, but with less resistance. To protect these conductors from the effects of temperature and aggressive environment inside of the bellows supplied inert gas. When this connector passes an electrical current through its internal and external parts. This provides additional stability to the connector to an electrical load when exposed to aggressive environment and high temperatures.

Corrugated protective element PR is dstable in the form of elastic conductive bellows, in which are laid with a margin along the length of the electric conductors in the form of stranded wires. The use of flexible inelastic metal sleeve in the prototype provides flexibility prisoner in the sleeve to the wire, but does not allow you to increase the distance between the buildings. Wire laid without reserve by the length of the inside of the sleeve, is not stretched during the application of mechanical loads. That is, the length of the sleeve in the statics of L equal to the length stowed inside wire 1. If the dynamics of such sleeve to apply in installations where mechanical loads require increased spacing, the wire inside the sleeve will stretch and break under the action of these loads. If we consider the increase of the distance between the buildings and mount with the stock wire and the sleeve, the stock sleeves will cling to adjacent parts of the instrument, take up more room, close the live part in illegal places. The use of elastic bellows in these conditions excludes all the above mentioned disadvantages. Elastic bellows in statics are not experiencing stress from the outside. L is the length of the elastic bellows. Thus l is the length of the laid inside of it with a stock stranded wire. l=L+ΔL, where ΔL - the length of the bellows when the application to it of the mechanical load along the axis of symmetry. Under the application of mechanical loads to this connection is the diameter of the body of the bellows tend to move away from each other. The bellows is stretched to calculated in advance of length L+ΔL. the Wire inside of the bellows is deflected due to the stock length, laid out in the installation. When removing the load, the bellows due to the elasticity takes its original shape and length L, and the wire is placed inside the bellows. This improves the stability of the connector to mechanical loads.

The unification of the internal cavity of the bellows with the holes in the housings allows you to use the connector in two ways:

when the connector is filled with a mixture of neutral reducing gases and is sealed from the external and internal environment of the device

when the connector is sealed only from the external environment and internal environment of the device has a message.

Filling the internal cavity of the bellows and openings of buildings with a mixture of neutral reducing gases instead of a mixture of inert gases, which is used in the prototype, gives the proposed connector wider application. Temperature, which is calculated by the proposed connector, above those for which designed a prototype. Stekloizolu, which is used in the prototype, is destroyed at temperatures close to the melting temperature of the metals. So as insulation in the proposed connector is used a mixture of neutral restorative ha is impressive. Use as a filler gases which are inert, such as nitrogen (N2carbon dioxide CO2protecting the wire into the bellows from oxidation environment and the influence of elevated temperatures, expands, additionally, the list of the used shielding gases, complementing its cheaper and applicable industrial gases. And the use of reducing gases such as CO and H2that even allows you to restore the metal oxide contained in the material of the conductor in the bellows. This increases the conductivity of the wire material and, therefore, increases the resistance of the connector to the electrical loads.

Use as electrical conductors stranded wire allows you to use the connector in networks with large values of the electric current, where the enlarged cross-section of the wire while maintaining its flexibility. This allows you to increase the resistance of the connector to the electric loads. Flexible stranded wire, laid in the combined internal volume of the bellows and buildings, must have hard ends, so that with their help it was possible to fix the wire in buildings. Mount stranded wires in buildings must be efficient, reliable, resistant to mechanical loads. At the same time, it triplenegative to skip the gas inside the bellows. Properties of flexibility and looseness of multi-conductor cables are used for flexible connection between the connector housings and transmission inside the bellows gas. In order to secure flexible stranded wire in rigid housings, it is necessary to give the rigidity of its ends. Technologically the most beneficial solution is to compress the end of the wire washer. Veins, which constitute the washer after crushing, tight to each other, while maintaining the porous structure of the washer that allows gas to pass through the washer. To reduce the resistance to the passage of gas in the washer pierce a hole in the process of pressing.

When the connector is in an environment of elevated temperatures between related guides pressed in the washer, the processes of spot welding, which increases the stiffness of the washer, the strength of the connection between the washer and the housing. As a result, improves reliability and resistance to mechanical stress of the entire connector as a whole.

When the contact elements are in the form of bushings without holes, the connector is filled with a mixture of neutral reducing gases and is sealed from the external and internal environment of the device contact elements. In such embodiment the connector is mounted to the external device in any way and holds itself through ELEH the electrical current, maintaining increased resistance to mechanical and electrical loads due to its execution.

When the contact elements are in the form of bushings with holes, the connector is sealed only from the external environment and internal environment of the device has a message. In such embodiment the connector after installation in the external device holds itself through the electric current and the mixture is neutral reducing gases. Gases passing through the bellows, on the conductor are the same as in the variant of the sleeves without holes. The connector maintains its integrity on environment and this was sufficient to maintain its characteristics.

Brief description of figures and drawings.

The drawing shows a variant of the electrical connector in its longitudinal section.

Embodiments of the invention.

As shown in the drawing, the electrical connector consists of a corrugated protective element made in the form of an elastic bellows 1, hermetically sealed on two sides by buildings 2 and 3. Case 2 and 3 have through holes 4 and 5, forming with the internal cavity of the bellows 1 total. This total volume is filled with a mixture of neutral reducing gases (not shown), among which are electrical conductors in the form of stranded wires 6, Wojennej is with a stock length in the cavity of the bellows 1. The ends of the stranded wire 6 is compressed in the form of washers 7 and 8 with holes, pressed and hermetically fixed in the housings 2 and 3, the contact elements 9 and 10. Both ends of the stranded wires 6 are laid in holes of the housing 2 and the housing 3 and fixed therein by means of pressing with passing of gas through the space between the conductors of the wires 6. The length of the wire 6, arranged in the working of the bellows 1 can be found by the formula:

l=L+ΔL,

where l is the length of the wire 6 in the working of the bellows 1,

L is the length of the working part of the bellows 1 with no load,

ΔL is the stroke of the bellows 1 at its maximum extension.

Working electrical connector provides the passage of electric current between the two conductors.

Consider the first embodiment of the connector when the contact elements are in the form of bushings without holes. Before connecting such electrical connector to the external conductors filled with a mixture of neutral reducing gases and pressurized contact elements 9 and 10 without through holes. Thus, the connector is hermetically sealed from the external environment and the internal environment of the device. When connecting the connector to an external conductors with any detachable (screw, plug, bayonet itd) or permanent (welding, soldering etc.) connection is an electrical connection of external conductors through the contact elements 9 and 10 of the housing 2, and 3, the bellows 1 and stranded wire 6 in it.

When the connector moves the contact element 9 and the housing 2 relative to the contact element 10 and the housing 3 in different planes. When the bellows 1 is deformed, stretched, stranded wire 6 it bends, straightens, producing stacked in the internal cavity of the bellows 1 and calculated in advance, the reserve length. This stock allows you not to test the wire 6 mechanical loads, aimed at his break. While maintaining electrical contact between the outer conductors through the connector. The influence of high temperature on the connector heats it. The electrical resistance of the bellows 1, in which the current increases. If this temperature would operate stranded wire 6 without the protection of the bellows 1, it would have heated up, its electrical resistance would increase, he would oxidized under the influence of aggressive environment until fracture. Placed inside of the bellows 1 stranded wire 6 is protected from oxidation by a mixture of neutral reducing gases, previously uploaded into the cavity of the bellows 1, which, in addition, inhibits the increase of temperature inside the bellows is 1, because it has low thermal conductivity.

Consider the second embodiment of the connector when the contact elements are in the form of bushings with holes. In this case, the connection of the connector to the system, simultaneously filling the connector with a mixture of neutral reducing gases and passing through it an electric current. The connector connects the contact elements 9 and 10 in the form of a bushing with a through hole by means of any kind of airtight connection to external conductors in the form of tubes through which can flow the gas (not shown). In this case, the system is considered, conductive electric current and gas at the same time. Thus, the connector is hermetically isolated only from the external environment and internal environment of the device it is connected. The input of gas into the system under pressure through the connector, the gas passes through the through hole in the contact element 9, a through bore in the housing 2 due to the fact that laid him stranded wire 6 passes between the cores of the gas. The gas passes through the internal cavity of the bellows 1 due to the tight connection of the bellows 1 with cases 2 and 3. Then the gas passes through the through hole in the housing 3 on the same principle as in case 2, and through the contact element 10 again enters the system, conducting the electric current and ha is. The gas that fills the internal cavity of the connector does not stranded wire 6 on the inside of the bellows 1 to oxidize. During operation of the system is the vibration of its individual parts, in particular of the conductors. When the connector moves the contact element 9 and the housing 2 relative to the contact element 10 and the housing 3 in different planes. When the bellows 1 is deformed, preserving the integrity and the integrity of the internal total volume formed by the holes in the housings 2 and 3 and the internal cavity of the bellows 1, softening due to its elasticity and mechanical shocks. An electric circuit when it is not terminated because stranded wire 6 in the working of the bellows 1 are stacked with a pre-designed stock. During the course of ΔL bellows 1 changes the distance between the housing 2 and the housing 3, and the supply wires 6 gives him the opportunity to stay loose.

Industrial applicability

The invention can be used in systems where you want to save electric and gas connection from the aggressive environment, vibration and mechanical loads, for example when creating a fuel cell, in metallurgy, mechanical engineering.

1. Electrical connector containing a tightly coupled with buildings corrugated protective element, in the inner cavity of which containing the electric conductors in the gas environment, connected to the conductive contact elements through buildings, characterized in that the housings are formed through holes, which are combined with the internal cavity of the protective element, is presented in the form of an elastic bellows, the total volume filled with a mixture of neutral reducing gases, where laid with a margin along the length of the electrical conductor in the form of stranded wire, the ends of which are formed in the form of washers, pressed and hermetically fixed in the holes of the buildings of the contact elements, and the housing and the bellows are made of conductive material.

2. Electrical connector according to claim 1, characterized in that the contact elements are in the form of bushings without holes.

3. Electrical connector according to claim 1, characterized in that the contact elements are in the form of bushings with holes.



 

Same patents:

The invention relates to electronic devices and can be used in the indicator devices

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

Plug connection // 2231184
The invention relates to a plug connection for connecting a cable in underground mining

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

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: 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

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

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: invention relates to a connection for high-voltage cables with the paper impregnated isolation, to the power supply line and to the method of connection of high-voltage cables. The method of connection of two high-voltage cables (10, 10a, 10b) with the paper impregnated isolation is described, each of cables contains the conducting core formed by a conductor (12a, 12b) wound by inner semiconductor layer (14a, 14b), an insulating layer (16) of the cable impregnated with viscous composition radially external with reference to the conducting core (13), an external semiconductor layer (18), radially external with reference to the insulating layer (16) of the cable, and at least one protective layer, radially external with reference to the external semiconductor layer. The connection for high-voltage cables with the paper impregnated isolation and the power supply line containing at least one connection is also described.

EFFECT: invention provides uniform electric difference in the cable connection and reduces time for connection of a cable.

18 cl, 5 dwg, 1 tbl

Up!