RU2319989C1 - Method of selaing port of optical cable' coupling to provide output of conductors from armor to earth electrodes - Google Patents

Abstract

FIELD: fiver-optic engineering.

SUBSTANCE: method can be during mounting of building lengths of optical cables in couplings to provided output of conductors from earth electrodes. Washers are moved apart according to template for distance being equal to distance between grooves of coupling's port. Space between washers is filled with sealing compound. Conductor with washers is mounted in port of lower part of coupling's case in such a way that washers come into grooves of coupling's port. Lower and top ports of coupling's case are connected together. Washers with openings, number of which openings equals to number of earth electrodes to be introduced, are put one atop other in such a manner that openings are brought in coincidence. Earth electrode is inserted into any opening in such a way that single earth electrode goes through any opening to pass through both washers. After that washers are moved apart to follow template for distance being equal to distance between grooves of coupling's port. Space between washers is filled with sealing compound. Earth conductor with washers is inserted into port of lower part of coupling's case in such a way that washers enter grooves of coupling's port and top and lower parts of case are connected together to provide sealing of coupling's port of optical cable where earth conductors are outputted from armor to earth conductors.

EFFECT: widened area o application.

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Description

The invention relates to fiber optic technology and can be used in the installation of building lengths of optical cables in couplings for outputting conductors from armor to grounding conductors.

A known method [1] sealing the port of the connecting sleeve of an optical coupling cable of a dead end type with a lead of conductors from the armor to the ground electrodes, comprising a housing, a shell and an arm, in which cassettes with lodges are installed to fix the splices of the fibers of the optical cable, as well as a headband with metal and insulating plates and nozzles for inputting the ends of the optical cable to be connected, which consists in individually inserting seals into the nozzles of a large diameter of the mating part of the coupling body - the headband fittings bathtubs on an optical cable with armored assembly assemblies with contact plates extending from them with mounting assemblies for copper-sealed ground wires exiting the head of the coupling through small-diameter nozzles with metal sleeves installed for screws that secure the contact plates to a common steel plate. A transitional cone is put on a thin copper sealed grounding wire, heat-shrinkable tubes (TUT) are put on the joints of the transitional cone with the grounding wire and a small diameter pipe through which the grounding wire is output, Then HERE is heated, which ensures their shrinkage and sealing of the conductors from the armor to the ground electrodes. In this case, each of the grounding wires occupies one branch pipe (port) of the coupling. This limits the ability to enter more than one additional armored optical cable during installation of the branching coupling and, accordingly, the scope of the method.

A known method [2] sealing the port of the connecting sleeve of an optical communication cable with the output of the conductors from the armor to the earthing switch, containing two half-shells - the upper and lower parts, which consists in the fact that an insulating element made in the factory for the size of the coupling port of the coupling is installed in the coupling port for connection grounding wires to the armor with terminals for connecting armor on one side of the element, with terminals for connecting grounding wires on the other side of the element and conductors inside the insulating housing of the element Joining corresponding terminals disposed on both sides. The upper and lower parts of the housing are connected, which provides sealing of the coupling port with an insulating element installed in it for connecting the ground wires to the armor. The implementation of this method of sealing in the case of the withdrawal of ground wires from the armor of two cables is illustrated in figure 1. The cost of the factory-made insulating element for connecting the ground wires to the armor is quite high, which significantly increases the cost of the coupling kit. If it is necessary to enter an additional armored optical cable into the coupling, an additional insulating element is required to connect the ground wires to the armor. That is, one more port will be required for connecting the ground wires, which limits the possibility of introducing even one additional armored optical cable and, as a result, mounting a branch coupling. Thus, the scope of the method is limited.

A known method [3] of sealing the port of the connecting sleeve of an optical communication cable containing two half-bodies - the upper and lower parts, which consists in putting on two input gaskets in the form of a washer, the outer diameter of which corresponds to the inner diameter of the grooves in the ports of the lower and upper parts the coupling housing, and their inner diameter - to the outer diameter of the input cable, the gaskets are pushed according to the template by a distance equal to the distance between the grooves of the coupling port, the space between the gaskets is filled with a sealing composition, a conductor with gaskets is installed in the port of the lower part of the coupling body so that the gaskets enter the grooves of the coupling port, connect the lower and upper parts of the coupling body, providing sealing of the coupling port. In this case, one ground wire occupies one coupling port. This limits the ability to enter more than one additional armored optical cable during installation of the branching coupling and, accordingly, the scope of the method.

A known method [4] of sealing the port of the connecting sleeve of an optical communication cable containing two half-shells - the upper and lower parts, which consists in the fact that one, two or more input cables put on two gaskets in the form of washers, the outer diameter of which corresponds to the inner diameter of the grooves in ports of the lower and upper parts of the coupling body, and their inner diameter allows you to put them on all the input cables together, the gaskets are pushed along the template by a distance equal to the distance between the grooves of the coupling port (as shown in figa .) The space between the gaskets is filled with a sealing compound, the conductor with gaskets is installed in the port of the lower part of the coupling body so that the gaskets enter the grooves of the coupling port, as shown in Fig.2b. Then, the lower and upper parts of the coupling housing are connected, providing sealing of the coupling port. This method is designed to seal the port when entering one or more station optical cables. If the coupling is located on the track - in the ground, in the container, etc. - Due to the temperature difference inside the housing, significant pressure arises. As a result, when using the method in question for sealing the port of the connecting sleeve of an optical communication cable with the output of the conductors from the armor to the ground electrodes, the sealing composition will be extruded through the holes between the gaskets and the input wires, which will lead to a violation of the tightness of the coupling. This excludes the possibility of using this method for introducing conductors from armor to earthing when mounting couplings located outdoors on the line.

The essence of the invention is the expansion of the scope of the method of sealing the port of the coupling of the optical cable with the conclusion of the conductors from the armor to the ground.

This essence is achieved by the fact that according to the method of sealing the coupling port of the optical cable with the output of the grounding conductors from the armor to the ground electrodes, containing two half-bodies - the upper and lower parts, two gaskets, in which the outer diameter corresponds to the inner diameter of the grooves in the ports of the lower and upper parts of the coupling body , the gaskets are expanded according to the template by a distance equal to the distance between the grooves of the coupling port, the space between the gaskets is filled with a sealing compound, the conductor with gaskets is installed in the port the lower part of the coupling body so that the gaskets fit into the grooves of the coupling port, connect the lower and upper parts of the coupling housing, and the gaskets with holes, the number of which is equal to the number of grounding wires inserted, are superimposed so that the holes coincide, they are inserted into each hole grounding conductor so that one grounding conductor enters one hole and passes through both gaskets, after which the gaskets are pushed according to the template to a distance equal to the distance between the grooves of the coupling port, the space between the dkami filled with sealing compound, the grounding conductor with spacers placed in the bottom of port coupling body so that the gasket includes a coupling grooves port connects the lower and upper parts of the coupling body to seal the coupling port of the optical cable with conductors from the ground terminal to the earth electrodes armor.

Figure 1 presents the implementation of the sealing method in the case of the withdrawal of ground wires from the armor of two cables [2]; figure 2 presents a diagram of the implementation of the method of sealing the port of the connector of the optical communication cable [4]; figure 3 presents the appearance of the coupling; figure 4 presents a diagram of a device for implementing the proposed method.

The device contains two half-bodies - the upper 1 and lower 2 parts of the coupling body, which have input ports 3 with grooves 4, gaskets with holes 5, grounding conductors 6 and a sealing compound 7, while the outer diameter of the gaskets 5 corresponds to the internal diameter of the grooves 4 in the input ports 3 lower 2 and upper 1 parts of the coupling body, the number of holes in the gaskets 5 is equal to the number of input grounding conductors 6, and the inner diameter of the holes of the gaskets 5 is equal to the outer diameter of the grounding conductors 6.

The method is as follows.

When connecting the upper 1 and lower 2 parts of the coupling housing, the sealing compound 7 due to the pressure of the surfaces of the input port 3 of the upper 1 and lower 2 parts of the coupling housing fills the free space between the grounding conductors 6 and the gaps between the grounding conductors 6 and the gaskets 5, which ensures the tightness of the port couplings of an optical communication cable with a conclusion of grounding conductors from armor to grounding conductors.

The proposed method allows the input of a sufficiently large number of grounding conductors through one port of the optical cable coupling. As a result, when additional armored cables are inserted, additional ports are not required for the input of grounding conductors. This allows an increase in the number of optical cables mounted in the coupling and, thus, expands the scope of the method of sealing the port of the optical cable coupling with the conclusion of the conductors from the armor to the ground. At the same time, due to the small gap between the boundaries of the gasket openings and the grounding conductors passing through them, the sealing compound will not be squeezed out of the coupling when the pressure increases in it due to the temperature difference, which will ensure the tightness of the port during operation of the coupling.

LITERATURE

1. Yushchenko N.I., Komarov O.M., Matveev E.A., Sosulin G.V. Dead end sleeve for an optical cable with sealed fittings for input and output of optical cables with sealed conductors - leads from the armor to the ground. - Patent RU 99125727 A. Publ. 10/10/2001.

2178-LS EGI External Ground Isolation Kit for the 2178 and 2178-L / S Series Fiber Optic Splice Cases, 1997.

3.2178-L / S Family Fiber Optic Splice Case with Gasket, November 1998.

4.2178-L / S Family Fiber Optic Splice Case with Gasket, March 2003.

Claims (1)

A method of sealing an optical cable coupling port with an output of grounding conductors from the armor to the ground electrodes, containing two half-bodies - the upper and lower parts, two gaskets, in which the outer diameter corresponds to the internal diameter of the grooves in the ports of the lower and upper parts of the coupling body, namely, that the gaskets extend according to the template to a distance equal to the distance between the grooves of the coupling port, the space between the gaskets is filled with a sealing compound, the conductor with gaskets is installed in the port of the lower part of the housing the couplings so that the gaskets fit into the grooves of the coupling port, connect the lower and upper parts of the coupling housing, characterized in that the gaskets with holes, the number of which is equal to the number of grounding conductors inserted, are superimposed so that the holes coincide, they are inserted into each hole grounding conductor so that one grounding conductor enters one hole and passes through both gaskets, after which the gaskets are pushed according to the template to a distance equal to the distance between the grooves of the coupling port, the space between the gaskets and filled with a sealing compound, the grounding conductor with gaskets is installed in the port of the lower part of the coupling body so that the gaskets enter the grooves of the coupling port, connecting the lower and upper parts of the coupling housing, providing sealing of the optical cable coupling port with the conclusion of the grounding conductors from the armor to the ground electrodes.

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