Explosion-proof electrical connector

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

 

The invention relates to electrical engineering and can be used in cable compounds, in particular in hazardous, polluted zones.

Known coaxial cable connector (A.S. No. 1788544, CL H 01 R 17/04, publ. 15.01.93, bull. No. 2)containing the connector and socket section with a dielectric support washers interconnected by means of a conical sleeve, and provided with a dielectric cap in the form of a stepped sleeve.

The main disadvantage of this connector is the lack of integrity and protection (special measures applied to electrical equipment to avoid ignition of a surrounding explosive gas environment).

Closest to the proposed technical solution is the coaxial cable connector (Patent RF №2220484, CL MKI7H 01 R 24/02, publ. 27.12.2003,, bull. No. 36), containing the connector and socket section with dielectric washers and tightening the sleeve, and an internal cavity, providing damping of the energy of the explosion inside her without output bit pulses in the environment.

The main disadvantages of this design are its complexity, lack of integrity, dust and bryzgogasiteli, as well as the need to perform some preliminary operations when connecting and disconnecting sections to the circuit and washed the W electrical contacts occurred within the cavity damping bit pulses while maintaining the parameters of protection.

The aim of the invention is to simplify the construction, increase the reliability of protection and ensuring tightness.

This goal is achieved by the fact that the explosion-proof electrical connector containing the connector and socket sections, consisting of buildings placed in them respectively sockets and plugs, sealed compound in joining places of cables, tightening sleeve and the damping of the discharge pulse, tightening sleeve fixed retaining ring on the body of one of the sections, the casing connector and socket sections are made members of one another, separated by a sealing gasket, and have an axial length, ensuring their mutual overlap in the moments of connection and disconnection of connectors and plugs, forming the damping of the discharge pulse.

The analysis found in the patent search, the information and catalog materials for explosion-proof electrical connectors on the funds of the regional universal scientific library, Saratov allows us to conclude that the proposed device is not known from the prior art, that is new.

In addition, this device is not clear from the analyzed sources, i.e. has an inventive step.

The proposed design is vzryvozashhishhennogo electrical connector caused by operational practices, namely, that all known explosion-proof electrical connectors are not sealed, are complicated, require a series of preliminary operations for connecting and disconnecting sections for opening and closing the electrical contacts occurred inside the chamber blanking bit pulses while maintaining the parameters of protection.

Placing a seal between the connector and socket housings sections can provide tightness, dust - and splashproof explosion-proof electrical connector that ensures trouble-free operation and prolongs its service.

Performance of buildings connector and socket sections included in one another and having an axial length, ensuring their mutual overlap in the moments of connection and disconnection of electrical contacts, allows a minimal number of elements to form a chamber blanking bit pulses, i.e. achieved a clear simplify the design and increase the reliability of protection.

Fastening the tightening sleeve on the housing of one of the sections of the retaining ring simplifies the processes of connection and disconnection of the sections and eliminates the need to perform some preliminary operations, thus opening and closing the electrical contacts are guaranteed to occur is the damping bit pulses while maintaining the parameters of protection.

Consequently, the proposed explosion-proof electrical connector has industrial utility.

The invention is illustrated in the drawing, which shows a General view.

Explosion-proof electrical connector consists of a plug housing section 1 and the hull of the breeding section 2, which are placed in electrical contact, respectively, the plug 3 and socket 4.

The electrical contacts of the plugs 3 and 4 nests soldered wires cables that are sealed in the casing sections 1 and 2 of compound 5.

Housing plug 1 and socket 2 sections are connected to the screw tightening sleeve 6, which is protected from self-unfastening the nut 7. The translational movement of the tightening sleeve 6 along the axis of the connector is limited on one side by the ledge on the housing of the breeding section 2, and on the other, retaining ring 8.

In the case of the breeding section 2 has a groove, which is equipped with a seal 9.

Explosion-proof electric connector is as follows.

When assembling the connector housing plug 1 and socket 2 sections comprises one another on the surfaces with the words "Explosion" (see drawing). After tightening sleeve 6 and the thread is screwed on the body of one of the sections, for example, drawing on the plug housing section 1. When the plug 3 is fixed in the socket 4, when the e contacts are closed. Tightening sleeve 6 is fixed by a lock nut 7.

Disconnection of the connector is as simple as unscrewing the tightening sleeve 6 after the preliminary loosening the lock nut 7. As the tightening sleeve 6 fixed retaining ring 8, its rotation is converted into translational movement of the casing sections relative to each other along the axis of rotation, and the plugs 3 out of the sockets 4, the electrical contacts are opened.

In moments of shorting and breaking of electrical contacts, and the assembled housing plug 1 and socket 2 sections comprises one another on the surfaces with the words "Explosion" in the amount necessary to extinguish the bit pulses, i.e. the breaking of electrical contacts occurs inside the chamber blanking bit pulses while maintaining the parameters of protection. However, even in the event of ignition of an explosive mixture inside the chamber blanking bit pulse transmission ignition of the surrounding explosive mixture will not occur. The tightness of the camera blanking bit pulses, protection against the ingress of dust and moisture is provided by the seal 9 and compound 5.

Explosion-proof electrical connector containing the connector and socket sections, consisting of buildings placed in them respectively sockets and plugs, ger is lizirovania compound in joining places of cables, tightening sleeve and the damping of the discharge pulses, characterized in that the tightening sleeve is fixed retaining ring on the body of one of the sections, the casing connector and socket sections are made members of one another, separated by a sealing gasket, and have an axial length, ensuring their mutual overlap in the moments of connection and disconnection of connectors and plugs, forming the damping of the discharge pulse.



 

Same patents:

The invention relates to electrical engineering and can be used in cable connections

The invention relates to electrical engineering and can be used in cable connections

The invention relates to the field of electrical engineering

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

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; cable connectors.

SUBSTANCE: proposed coaxial cable connector has socket and plug sections with insulating washers, plug and clamping bushings with inner thread at end disposed in plug section, as well as coupling bushing disposed in socket section, flange and fastenings on connector in the form of mating pairs (holes and screws). Clamping bushing is stretched outside the socket-section flange; it encloses the latter and is tightly joined directly with coupling bushing by means of outer thread provided on the latter to form enclosed outer shell; fastening screws are moving within coupling-bushing flange from plug to socket sections so as to clamp flange to coupling bushing that has blind holes for the purpose. In this way single enclosed inner cavity is formed to provide for suppressing explosion energy inside connector without escape of discharge pulses into surrounding atmosphere thereby preventing bursts of all kinds and inflammation outside the cable connector.

EFFECT: enhanced explosion protection and manufacturability.

1 cl, 1 dwg

Connector // 2284617

FIELD: electrical engineering; connecting electric circuits.

SUBSTANCE: proposed device has internally threaded shroud, contact separated by means of insulator and designed for connection to central core of coaxial cable, and coaxially mounted contact sleeve used for connection to cable braiding. Novelty is that it is provided with threaded sleeve having annular projection and threaded ring. In addition, it is provided with contact that has annular projection and annular slot whose threaded part is brought in contact with threaded ring of threaded sleeve incorporating spring member and holds spring-loaded contact in initial position by means of insulating rings mounted on contact and brought in contact with annular projection of threaded sleeve and with contact sleeve end. Third C-shaped insulating ring is installed in annular slot of contact. Threaded sleeve is installed inside connector shroud so that it contacts internal thread of the latter.

EFFECT: simplified design, facilitated maintenance, enlarged functional capabilities.

1 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: invention is attributed to electric engineering, specifically to electric connectors and can be used for multicore cables interconnection or connection with measuring devices used in nuclear reactors. Electric connector is performed as two shells telescoping into each other. Contact group of one shell is performed as rod on which electric contacts are installed which contacts are made in the form of mutually isolated current-conducting rings to which the cores of one cable part are connected, and contact group of the second part is installed inside cylinder and has a form of ceramic collars where resilient contacts are fixed. Resilient contacts has a form of turning around balls of current-conductive material to the sockets of which cores of the second cable part are connected. Cable connections are performed by simple inserting the rod of the first shell into collars of the second shell.

EFFECT: getting possibility to use connector in space-limited environment of nuclear reactor whilst providing possibility to connect or disconnect a cable virtually "blindly" in short period on time that is important for operation in conditions of neutron irradiation at nuclear reactor.

10 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention suggests multifunction connecting cord having data transfer and power supply interfaces for personal computer and also audio signal transfer interface for headphones. Multifunction connecting cord contains splitter; audio plug at one side of splitter purposed for formation of audio signal transmitting channel at connection to multimedia device; data/power connector installed nearby audio plug protruding from splitter and purposed for formation of data transfer channel and power supply line at connection to peripheral unit; USB connector connected by cable with audio plug and data/power connector through splitter, socket holder installed at one side of USB connector having audio socket purposed for audio plug.

EFFECT: cord provides interfaces for audio signals, data transfer and power supply.

12 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: device comprises holder, at least one socket arranged in holder and having the first receiving hole for insertion of connected wire, and guide accessory arranged upstream the first receiving hole of at least one socket. Besides the first receiving hole has cross section, and guide accessory includes at least one guide channel passing through guide accessory and coaxial to the first receiving hole of at least one socket for sending the wire into the first receiving hole of socket. At least one guide channel includes opposite far and near ends, near end is directed towards the side of the first receiving hole, and far end is directed from the first receiving hole, in at least one socket. Near end has cross section of not more than cross section of the first receiving hole of at least one socket. Far end has cross section, which is more than cross section of near end.

EFFECT: development of compact and easy-to-fix connection, which is convenient to use.

9 cl, 6 dwg

Up!