SU792381A1 - Sealed plug-and -socket connector - Google Patents

Description

The invention relates to electrical engineering, in particular, to sealed plug connectors for operation in a current-conducting medium, and can be used for switching directly underwater high-voltage power supply circuits for underwater lighting devices with gas-discharge pulse or other lamps, as well as other underwater electrical objects. A sealed plug connector i is known in which an electrical connection is created by passing a contact through a self-sealing pre-cut hole in the diaphragm blocking the chamber filled with insulating fluid in which the sockets are located. The disadvantage of this connector is that it can only be used for docking in air, since the absence of insulating liquid on the pins can cause them to corrode. Moreover, when docked in Iorian water, it will be gripped by the surface of the pins liquid outlet. After a certain number of joints, the dielectric properties of the liquid decrease in TC. Also known is a sealed plug connector 2, the contacts of the plug and socket in which are located in sealed enclosures, while from the articulation side the contacts are closed by diaphragms made of an elastic material. The known connector allows articulation in seawater, but it is not reliable enough, since the lack of liquid filling of the cavities of the sockets and plugs leads to the fact that under high pressure of seawater, the latter, when articulated, invariably penetrates through the compressed diaphragms, since If necessary, the degree of contraction of the diaphragms. Also known is a sealed plug connector for operation in a conductive medium containing a plug and a socket in hermetically sealed. Filled with insulators with a liquid-solid casing, having compensators for varying the internal volume, respectively, at least one spring-covered pin and socket protected from external the environment by insulating parts located at the articulation side of the CT. However, this connector does not have high reliability due to the use of movable elements of the plug and socket of movable rubber rings as a seal. A thin layer of seawater and its salts will inevitably go into the inside of the plug and outlet cases, reducing the insulating properties of the liquid, and due to the aging of rubber, this process will increase over time. An increase in the electrical conductivity of a liquid leads to an increase in electrical losses and, after a series of connections, makes it impossible to use the connector as a high-voltage one. The purpose of the invention is to increase reliability and enhance operational capabilities. The goal is achieved by the fact that in a sealed plug connector for operation in a conductive medium containing a plug and a socket, in sealed enclosures filled with insulating fluid which have compensators for changing the internal volume, there are respectively at least one spring-covered pin and socket protected by from the influence of the external environment, the insulating parts located on the articulation side of the insulating parts are fixedly fixed on the housings and made in the form of diaphragms made of an elastic material with a cr At least one hole for passing the plug pin, one of the diaphragms on the joint side has a convex surface, the pin is mounted to move relative to the body in the direction of the joint, while the spring has a stiffness exceeding the total stiffness of the diaphragms, and the insulating fluid is under pressure, high environmental pressure. The achievement of this goal is also facilitated by the installation of a pin on the hollow rod, the sealing of the rolling stock with a flexible cover, for example, a bellows, one end of which is tightly connected to the rod and the other to the fixed element of the housing. In this case, the spaces under the cover communicate with the internal cavity of the fork body. The achievement of this goal is also facilitated by the placement of the pin of the fork of the hard case with an elastic tip having a hole for the passage of the pin. The cover is made of insulating material i and has the ability to move freely along the pin, and when docked, the cover moving together with the pin held by the stopper passes through the diaphragms tightly pressed to each other and forms a channel for movement of the pin that is reliably protected from the external environment protection -. the insulating material of the diaphragms, the insulating liquid and the insulating material of the hard case, while preventing the introduction of sea water or its salts into the work area, and also eliminating any conductive channel for the occurrence of leakage currents. In addition, the distinctive features of the invention are the placement in the diaphragm near the orifice of at least one elastic element for additional crimping of the forked contact pin, making holes in the diaphragms in the form of a slit, and a hard case with a pin in the shape of a double-edged knife, shaped as a lentil grain, to increase the sealing of the pin at the time of its penetration in the socket housing and to make movable end surfaces of the forks and sockets in the form of matching ends owls, one of which is fixed retainer, and another groove is formed with lead-in cone mating with a clamp for the mutual orientation of slotted holes aperture plugs and sockets. All the distinctive features listed above contribute to improving the internal cavity of the plug and socket cases from the external environment, and, consequently, to an increase in the permissible operating voltage of the connector. FIG. 1 shows a sealed plug connector in the dissected position, cross section; on ; FIG. 2 - sealing unit of the movable stem of the plug of the hermetic plug connector in the dissected position, cross section; in fig. 3 - sealing unit of the movable rod of the plug of the hermetic plug connector in the articulated position, cross section; 4, the protection node of the plug of the plug of the hermetic plug connector in the dissected position, cross section; in fig. 5 - assembly of the h-terminal of the current-carrying contacts of the hermetic plug of its connector in the articulated position, cross section; in fig. 6 protection node of the current-carrying contacts of the sealed plug connector in the articulated position, top view, cross section; Fig.7vid on the aperture of the plug in the dissected position; in fig. 8 is a view of the diaphragm of a fork of an articulated plug connector with a pin having a cross-section in the form of a double-edged, cross-section; in fig. 9 is a view of the knot protection assembly of an articulated plug connector with a pin having a cross-section in the form of a lentil grain, a cross-section; Fig, 10 - node

centering and orientation of the plug and outlet enclosures of the sealed plug connector.

In the case of plug 1 (fig. 1) one or several contact pins 2 are mounted, fixed through insulating sleeve 3 on movable rod 4. The movable rod moves in fixed sleeve 5 and in insulating sleeve 6 fixed in the case of fork, and isolating sleeve 6 serves to electrically isolate the pin from the body of the plug and ensure the orientation of the pin before docking. The internal cavities of the movable stem, fixed sleeve and insulator sleeve b, which form the internal cavity of the plug housing and filled with insulating liquid 7 with high penetrating voltage, are protected from the external environment by a diaphragm 8 made of insulating elastic material with a hole for passing the plug pin . A device 9 is attached to the plug housing to increase the pressure of the fluid inside the housing relative to the pressure of the external environment, for example, a loaded diaphragm, the preload of which is created by a screw 10 mounted in the corner 11 of the fixing membrane in the housing. In the case of the plug, devices 12 are also placed, compensating for the change in j of the internal volume of the housing when the connector articulates, caused by movement of the rod with the pin in the direction of the outlet, which can be membranes, bellows, elastic bags filled with gas, etc. The body 13 of the hermetic inlet 14 of the power cable is rigidly attached to the movable rod. The housing 13 houses a plug 15 for pouring insulating liquid into the internal cavity of the plug housing and has a flange for fastening a cap nut 17 for connecting the plug and the socket. The cap nut is loosely fastened to the cylinder 18, to which a key 19 is rigidly attached, moving in the keyway of the fork body. The electrical connection of the sealed lead-in to the pin is carried out using a conductor 20 located in the inner strips of the rod and insulating sleeve 3. The rod is returned to its original position by means of a spring 21 placed in the internal cavities of the fixed sleeve and insulating sleeve b. The elasticity of the spring is greater than the total elasticity of the diaphragms.

In the case of the socket 22, one or several contact sockets 23 are fixed in the insulating sleeve 24 rigidly fastened in the socket outlet, a plug 25 for filling the insulating

fluids 26 into the internal cavity of the outlet housing, a device 27 for increasing the pressure inside the housing relative to the pressure of the external environment, made, for example, similarly to the device 9, -. devices 28 that compensate for nemenecics of the internal volume of the housing when articulating the connector, caused by moving the pin inside the socket housing, and the housing 29 of the hermetic inlet 30 of the power cable 31.

0 A diaphragm 32 is also rigidly attached to the socket body, protecting the internal cavities of the socket housing from the external environment with the help of a flange 33. The protection assembly is designed in the same way as the assembly

5 protection 8, with this optimal option, when the shape of the contacting surfaces of the protection means 8 and 32 are both convex, but in any case, at least one of

0 them should be convex. The electrical connection of the cable to the male input is made through a conductor 34 located in the internal cavity of the socket housing.

For fixed sleeve 5 forks

5 (FIG. 2) is rigidly fixed with a flange 35 to one end of a flexible cover 36, for example, a bellows, the other end of which with the help of a flange 37 is rigidly fixed on a movable rod 4. The space of 0 under the cover is filled with the same liquid 7, and the internal cavity of the fork housing.

The proposed OPH-4a bellows cover is optimal, so

5 as it allows to keep constant n-. The amount of fluid under the cover 7, both in the disconnection and in the docked connector positions.

Pin 2 plugs (Fig. 4) posted

0 in a hard case 38 of insulating material, the tip 39 of which is made elastic. In the undocked position, the tip is placed inside the protection means 8 of the plug, and the rear end plane of the cover 38 is in contact with 5 s with the stopper 40,

In the docked position (Fig. 5), the stopper comes into contact with the stop 41 and rises, releasing the cover 38, and the pin 2 falls into the contact socket 0 to 23 sockets.

On the pin 2, the protrusions 42 are made, and on the inner surface of the cover 38, the protrusions 43 interacting with them (Fig. 6). In diaphragms 8 and 32, at least one elastic element 44, for example, a lyrhocrane-spring, is positioned near the opening for passage of the pin.

The holes 45 in the diaphragms 8 and 32 (Fig. 7) are made in the form of a slit, and

O hard case 38 with the contact pin 2 placed in it is made (FIG. 8) in the form of a thin double-edged knife, the shape of the contact pin is irrelevant. The most optimal

five

(Fig. 8) The cover 38 with pin 2 is a form of lentil grain, but it is more difficult to manufacture. The shape of the cover and the pin is determined by the magnitude of the current. If the current values are small, and, consequently, the small dimensions of the cross section of the pin, it can be of circular cross section. At high current values, a circular cross section is unacceptable due to the large residual deformation of the diaphragm, which leads to the non-closure of the walls of the hole after removing the pin from it.

A cone 46 is fixed on the front end surface of the fork casing (Fig. 10) by means of a spring 47 and a key 48, which prevents the cone from rotating relative to the fork casing. A groove 49 is made in the front part of the cone, with a lead-in cone 50. A cone 51 is made on the front end surface of the socket housing, matching with 4 onus 1 46, with a cone 51), a retainer 52 is fitted tightly into the groove 49. The orientation of the latch 52 and the groove $ strictly corresponds to the orientation of Chy & and holes 45 or spaced pins in a multi-pin connector. In a multiple-slot connector with single-section pins for — size and mass reduction of the connector, the diaphragm is made common to all pins, with the pin and hole being located as close as possible to the center.

In a multi-pin connector, pins of different cross sections to increase sealing reliability while reducing the size and weight of the connector, each pair of contacts is provided with a separate pair of diaphragms with holes, the shape of which is determined by the cross sections of the pin. Possible in the connector is a combined method of protection using one diaphragm on several pins in combination with several separate diaphragms on the number of high-current pins.

When the connector is docked under water in conditions of low water transparency, the front end of the plug housing is brought into contact with the front end of the outlet body and, rotating the plug housing in one direction or another, inserts the retainer 52 into the feed cone 50 and the groove 49 until the cones 46 and 51, and then tighten the flare nut 17 onto the threaded part of the socket housing. Further docking is carried out by progressive movement of the plug with a nut 17, which is provided by sliding the key 19, in the groove groove of the fork housing. In this case, centered cone 46 and 51 and oriented by an orientation system consisting of a groove 49, a retainer 52 and keys 19 and 48, diaphragms 8 and 32 touch and squeeze seawater

from the area of the holes and the periphery. Since the elasticity of the spring 21 is greater than the total elasticity of the diaphragms, the rod 4 with the pin 2 begins to move toward the outlet only after the end spherical surfaces of the protective equipment are fully pressed together and have ensured that the seawater is completely squeezed out of the orifice zone.

The rod 4, moving in the direction of the outlet, causes pin 2 and cover 38, which is held by corkscrew 40, to move simultaneously. The tip of the cover passes through the diaphragms, preventing the pin from contact with sea water in the contact area of the diaphragm 8hJ, as well as in the inner surface of the holes 45 When the tip of the boot with the pin approaches the rear surface of the diaphragm 32 sockets, the stop 51 raises the stopper 40, the case does not stop into the cavity of the outlet body, but the pin moves forward, passes through the elastic tip and enters the socket. Socket 23. As the internal volume of the plug decreases when the stock moves forward, the insulating liquid 7, the internal volume of the case, is filled into compensators 12, the cover 36 provides reliable protection of the movable joint from the external environment.

When disconnecting the connector, the nut 17 rotates in the opposite direction, while the pin 2 comes out of contact with the sockets 23, does not spark in the case of an emergency disconnection, since the contacts are opened in the insulating liquid. Continuing the return movement, the pin goes inside the cover 38, held in place by the elastic forces of the compressed diaphragms 8 and 32, the stopper 40 occupies the initial position, the protrusions 42 mate with the protrusion 43 and move the cover 38 together with the pin 2 towards the plug. The elasticity of the spring 21 provides compression of the diaphragms 8 and 32 to return the cover with the pin to its original position. The thickness of the front wall of the sleeve provides placement

In it, the part of the cover that is located at the - butt-in in the diaphragm 32, therefore, any traces of salt inside the plug's body are excluded. Further movement of the nut 17 releases diaphragms, the reliability of sealing the openings of which is provided by elastic elements 44 and excessive pressure of the liquid 7, which is created by the devices 9 and 27 for increasing the pressure of the liquid inside the housing relative to the external pressure.

Claims (3)

This embodiment of the sealed plug connector allows to increase the allowable operating voltage of the connector by improving the isolation of current-carrying contacts from the external environment and, consequently, the possibility of using it as a high-voltage one, while allowing an emergency connection or splitting of the connector under high voltage. by living. Claim 1. A sealed plug connector for operation in a conductive medium containing a plug and socket in hermetic, filled with insulating fluid housings having compensators for changing the internal volume, respectively, at least one spring-covered pin and socket protected from external environment insulating parts located on the side of the joint, characterized in that, in order to increase reliability and expand operational capabilities, insulating details whether they are fixedly mounted on the housings and made in the form of diaphragms made of elastic material with at least one hole for passing the plug pin, at least one of the diaphragms at the articulation side has a convex surface, the pin is mounted for movement relative to the body in the articulation direction, In this case, the spring has a stiffness greater than the total stiffness of the diaphragms, and the insulating fluid is under a pressure greater than the ambient pressure. 2. The connector according to claim 1, characterized in that the pin is rigidly fixed on the hollow stem, movable relative to the housing, while between the housing and. stem mounted sealing unit. 3. Connector for working in a conductive medium according to claims. 1. and 2, about the fact that the sealing assembly is made in the form of a flexible cover, for example, a bellows connected to the stem and the housing, the internal space of which communicates with the internal cavity of the housing. 4. Connector according to p. 1-2, characterized in that the plug pin is housed in a hard case with an elastic one. a tip having an opening for passage of the pin, the cover being made of an insulating material and mounted for movement along the pin, with matching protrusions on the pin and the inner surface of the cover. 5. The connector on the PP. 1-3, characterized in that it is provided with at least one elastic element located in the diaphragm and enclosing the pin hole. 6. Connector according to paragraphs 1-4, characterized in that each hole of the diaphragm is made in the form of a gap, or, and the hard case with the contact pin of the plug placed in it is made in the form of a double-edged knife. 7. Connector according to paragraphs 1-5, characterized in that the cross section of the hard case with the contact pin of the plug placed in it has the shape of a lentil grain. 8. A dispenser according to claims 1-6, characterized in that the end surfaces of the body of the plug and the socket on the articulation side are made in the form of matching cones, one of which has a retainer fixed, a. in the other there is a corresponding groove, which interacts with a lock for the relative orientation of the slit-like holes in the diaphragms of the plug and the socket. Sources of information taken into account in the examination 1. US patent 3,643,207, cl. 339-96, 1972. 2. US patent 270387, cl. 339-94, 1955. 3. USSR author's certificate number 274176, cl. H 01 R 19/60, 1976. /four / J  8 4g f 4J 6 f / FIG. eight 7 4tf 58 F «2 4c 47,