CN2141607Y

CN2141607Y - Improved winding type cable plug

Info

Publication number: CN2141607Y
Application number: CN 92239934
Authority: CN
Inventors: 钱文臣
Original assignee: TIANJIN ELECTRICAL MACHINERY G
Current assignee: Tianjin J Bo Taco submersible electric pump Co., Ltd.
Priority date: 1992-11-07
Filing date: 1992-11-07
Publication date: 1993-09-01
Anticipated expiration: 2002-11-07

Abstract

The utility model relates to an improved winding type cable plug. In the utility model, the middle between a housing and a supporting seat is provided with a positioning pin; the inner of the convex port of the housing is in screw connection with a pressing sleeve, and the middle between the pressing sleeve and the excircle side face of the step ladder of the supporting seat is provided with an aluminium pad; the outer circle and the end face of the convex port of the housing are both provided with an O-shaped sealing ring. The plugging post of the utility model can position accurately, which easily guarantees the combination between the utility model and a socket hole; the utility model can improve the sealing performance between a device and the improved winding type cable plug; the field work of the utility model is easy to master, and the installation is quick.

Description

Improved winding type cable plug

The utility model relates to the improved wound form cable plug that is specifically designed to flat cable.

In recovering the oil in the oil field later stage at present, extensively utilizing oil-immersed pump, to manufacture special cable end and draw feed cable from extraneous power distribution cabinet, to realize fast, directly connecting the submersible electric machine with oil of oil-immersed pump, be its operation conduct electrical power, because its operational environment is more abominable, as containing corrosive substance such as sulfide in the high temperature of the high pressure that will bear 10-15MPa, 100-150 ℃ and the down-hole crude oil, so comparatively strict to the structural requirement of cable end.Known cable end structure can reduce two classes, first plug-in type, and it is similar to civilian plug, directly combines with socket, and its outside epoxy resin and butyronitrile carboxylic of adopting cooperates, or vulcanized rubber carries out encapsulation process.Its weak point is: said sealing because heat-resistance index is low and poor with the metal material adhesive bond, causes useful life very low.It two is wound forms, and it has the housing of individual metal, twines nude section, the tape insulation interval of lead earlier with insulating tape, and the lead termination is equipped with seal with the screwed connection inserting column and with the support seat supports with separate between lead and the housing.

It can improve the sealing of device effectively, but still the weak point that has is: be difficult to inserting column is accurately located, cause to be not easy to combine with the jack of socket; Field operation requires technical conditions higher.

The purpose of this utility model is to avoid the weak point of known technology, and a kind of improved wound form cable connector is provided, and it can improve peg graft sealing and realization grafting fast effectively.

The purpose of this utility model is achieved in that between housing and the support seat and is provided with alignment pin.With the screwed connection gland, between the ladder cylindrical side of gland and support seat lead pad is housed in the body nose mouth.Cylindrical, the end face of housing nose mouth are equipped with O-ring seals.

Advantage of the present utility model: the inserting column accurate positioning is easy to ensure and the combining of socket aperture; The sealing that can improve device and combine with socket; Field operation is easy to grasp, and is quick for installation.

Description of drawings:

Fig. 1 is the main cutaway view of improved wound form cable plug (expression combine with it socket).

Describe details and working condition in detail below in conjunction with Fig. 1 according to the concrete device that the utility model proposes.

This device comprises the housing made from nihard 3, its one section section is the square hull shape, and the cylindrical of another section is shaped on the ring flange that has two symmetrical through holes that assumes diamond in shape substantially, interior circle is shaped on ladder nose mouth and nose mouth cylindrical round and interior screw thread and is provided with concave ring groove.Flat cable 1 after the reeve housing square hull shape section; peel off the external protection of cable; make three strands of leads respectively have corresponding to substantially band inner insulating layer section, nude section and its outer silk termination; outside tape insulation interval and nude section; twine suitable level continuously with insulating tape, form the winding layer 4a of an integral body.Suit has the circular seal cushion block 5 of three through holes outside an end of this layer, and its side contacts with a ladder circle side of housing.Between winding layer 4a and one section flat cable (referring to have external protection) and the housing, perfusion insulated enclosure material and the perfusion layer 2 that can solidify.The seal block 5 that reclines is installed the circular seal piece made from fluorubber 7 that has three through holes, and adhesive-applying between outer surface and the associated part.The outer silk termination of each lead is connecting the cylindrical inserting column 12 of a metal, and is shaped on winding layer 4b as previously mentioned.Support with the circle support seat made from insulating material with three through holes 9 between each inserting column and separate, and each through hole respectively with give the not shown corresponding jack that will peg graft and be positioned on the same direction of axis line, and cylindrical is made Step Circular.The excircle of support seat slightly larger in diameter is shaped on 1-3 semicircle orifice, its quantity, position and be shaped on other semicircle orifice in housing 3 corresponding, installing and locating pin 8 in the hole.In the interior screw thread nose mouth of housing, install and to be shaped on outer silk and, between the ladder cylindrical side of gland end face and support lead pad 13 is housed for the gland 11 of screwing with end opening.When screwing gland, because the restriction of alignment pin, the support seat can only move and can not rotate along axis direction, realizes that the design attitude of inserting column 12 is constant like this.Oppress lead pad 13, sealing block 7 and seal block 5 simultaneously and be out of shape separately, realize reinforced seal flat cable.Interior and the end face of the concave ring groove of housing nose mouth cylindrical, each installs an O-ring seals 10, and the through hole that passes the shell flange dish is respectively installed the silk hole of a hexagon socket head cap screw 6 gang socket correspondences.

Working condition is such, the installation of this device and flat cable, in aforementioned, done introduction, as for the installation of submersible electric machine with oil socket and working condition be in the jack with inserting column 12 direct sockets, should keep each O-ring seals 10 and the corresponding position of socket that excellent contact is arranged simultaneously.Screw hexagon socket head cap screw 6, this device not only has firm being connected with socket, and the O-ring seals compressive deformation, realizes sealing.

Claims

1, a kind of improved wound form cable plug, by in the housing (3) of the ring flange of being with through hole and interior screw thread nose mouth, after inserting flat cable (1), three strands of leads respectively have the nude section, tape insulation interval and outer silk termination, the outer segmentation of lead is provided with winding layer (4a and 4b), be provided with the outer suit seal block (5) of a perfusion layer (2) and an end between winding layer (4a) and housing, the seal block that reclines is installed sealing block (7), the outer silk termination of each lead is connecting an inserting column (12), support seat (9) by insulation supports, the through hole that passes the shell flange dish is provided with the hexagon socket head cap screw formations such as (6) of energy gang socket, it is characterized in that being provided with alignment pin (8) between housing (3) and the support seat (9); With screwed connection gland (11), between the ladder cylindrical side of gland and support seat lead pad (13) is housed in the housing nose mouth; Cylindrical, the end face of housing nose mouth is equipped with O-ring seals (10).