CN2122444U - Connector of submersible oil (water) motor and cable - Google Patents

Abstract

The utility model discloses the coupling device of motors and electric cables, particularly a connector for submersible oil (water) motors and electric cables. The device is composed of an electric cable head and a socket assembly. Three cable cores led out by the electric cables are weld firmly with a male plug by screwed connection adding soldering tin, and are fixed in the electric cable head processed with an axial concave groove by an inner and an outer tongue spacing pieces. The matched socket assembly ensures the male plug to be inserted into the female plug hole after insulating grease is filled and fixed in the annular space formed by a female plug and the socket. The structure makes the axial dimension matched by the cable cores, the male plug and the female plug three parts shortened; the resistance among mating members is decreased.

Description

Connector of submersible oil (water) motor and cable

The utility model relates to a kind of motor and cable connector, especially for the device of dive oil (water) motor and cable connection.

General motor and cable connector have two big classes, i.e. (U.S. REDA company produces) wrapped formula and (U.S. ODI, CL company produce) plug-in type.The design feature of wrapped formula coupling arrangement is that the upper end of motor head has an inclined hole, is plugged with three females of being drawn by motor in the inclined hole.During following well construction, three females are hauled out in inclined hole, dock with three public plugs on the cable end respectively.Its advantage is that insulating reliability is better when operant level is higher.Shortcoming is to waste time and energy at the wrapped film in the well site of condition difference, and is difficult for sealing, in case conducting objects is arranged, then easily short circuit in the medium.The design feature of plug-in type coupling arrangement is to lay socket in the inclined hole on motor head top, and socket is fixed by wire circlip and alignment pin, and plug is installed in the upper end hole of socket, and at the lower end of cable core welding spouse plug.During following well construction, only need cable end and motor head carefully to patching, screw is fastening gets final product for usefulness.Its advantage is the easy construction of going into the well.Shortcoming is a poor reliability, and the housing of cable end is easily breakdown, in case conducting objects is arranged, the easy short circuit of its socket part in the medium.

The purpose of this utility model is to avoid the weak point in the above-mentioned technology, and a kind of labour intensity and time that can reduce wellsite applications is provided, and can improve the device of coupling reliability again.

The purpose of this utility model can solve by the following technical programs: in the cable end part; to add scolding tin again with being threaded respectively with three public plugs by three cable cores that cable is drawn fixes; in the flexible pipe of one section high insulating property of the outside of cable core insulating barrier cover, prevent because of peeling off the short trouble that protective layer damage insulating barrier causes.Process axial notch in the female thread portion of cable end housing lower end, the appropriate location of following pressure pad, being fixed with inside and outside tongue pad sheet puts in place.Rubber blanket between last pressure pad and following pressure pad, in the space between distortion back filling cable end housing and the cable conductor under the extruding that is screwed into binding ring, thereby realize the seal isolation between the rubber blanket upper and lower, effectively prevent oil well water contact plug part, improved the dielectric strength of cable end.

Spouse's socket assembly mainly is made of motor down-lead, lead terminal, female, socket with it.To weld with scolding tin from core and the lead terminal that motor is drawn, in the insulating sleeve outside of motor down-lead cover one O-ring seals, again at the whole lapped insulation adhesive tapes in the outside of lead terminal, O-ring seals and lead wire insulation sleeve pipe.Behind female outer round surface (not comprising threaded portion) the lapped insulation adhesive tape, be inserted into socket, and in the annular space that female and socket form filling insulation fat.Socket is placed in the socket aperture of motor head, is fixed by jump ring.During following well construction, public plug is plugged in the hole of female, is screwed and gets final product.

Accompanying drawing 1 is a structural representation of the present utility model, among the figure: 1-cable, 2-cable conductor; 3-cable core insulating barrier, 4-protective layer, 5-insulating adhesive tape; the 6-flexible insulated hose, 7-adhesive, 8-cable end housing; the last pressure pad of 9-, 10-rubber blanket, 11-insulating sleeve; pressure pad under the 12-is in the 13-; outer tongue pad sheet, the 14-binding ring; the 15-public plug, 16-motor down-lead, 17-insulating adhesive tape; 18-O shape sealing ring, 19-lead terminal, 20-female; 21-insulating adhesive tape, the 22-fat that insulate, the 23-socket; the 24-jump ring; the 25-sealing ring, 26-motor head, 27-screw.

Accompanying drawing discloses entire infrastructure of the present utility model, below in conjunction with accompanying drawing the utility model is done further detailed description.Fig. 1 is the structure chart of this coupling arrangement.Form by two parts, wherein a part is called cable end, mainly by jump lead (1), insulating adhesive tape (5), flexible insulated hose (6), adhesive (7), cable end housing (8), last pressure pad (9), rubber blanket (10), insulating sleeve (11), following pressure pad (12), inside and outside tongue pad sheet (13), binding ring, (14), public plug (15) are formed.Last pressure pad (9), rubber blanket (10) all are three hole pads (as shown in Figure 2); following pressure pad (12) is reducing three hole pads (as shown in Figure 3); public plug (15) adds scolding tin with cable conductor (2) with being threaded to be fixed; at the flexible pipe (6) of one section high insulating property of the outside of cable core insulating barrier (3) cover, prevent because of peeling off the short trouble that protective layer (4) damage insulating barrier (3) causes.Female thread portion in cable end housing (8) lower end reaches the periphery processing axial notch of pressure pad (12) down, between binding ring (14) and following pressure pad (12), lay inside and outside tongue pad sheet (13) (as shown in Figure 4), its outer tongue is stuck in the groove of cable end housing (8) just, and interior tongue is stuck in down in the groove of pressure pad (12).When rotation lock ring (14), following pressure pad (12) is not followed rotation like this, thereby each public plug (15) that can guarantee cable end is all in correct position.Last pressure pad (9) is made by the strong material of rigidity, is screwed into binding ring (14) and can makes the space between the filling cable end housing (8) and cable after rubber blanket (10) extrusion, has realized the seal isolation under the rubber blanket, between the below.

Spouse's socket assembly is made up of motor down-lead (16), O-ring seals (18), lead terminal (19), female (20), socket (23) with it.Socket (23) has three groups of reducing holes, is the hole corresponding (as shown in Figure 5) with last pressure pad (9), rubber blanket (10), following pressure pad (12).The core of motor down-lead (16) and lead terminal (19) weld with scolding tin.Insulating sleeve outside at motor down-lead (16) is overlapped with O-ring seals (18), again at the whole lapped insulation adhesive tapes in the outside of lead terminal (19), O-ring seals (18) and lead wire insulation sleeve pipe (17).Like this, even oil well water can enter the motor down-lead part, can guarantee its dielectric strength owing to the seal isolation effect of O-ring seals.Behind the outer round surface of female (20) (not comprising screw thread) the lapped insulation adhesive tape (21), be inserted into socket (23) and filling insulation fat (22) in the annular space of female and socket formation.

Socket is placed in the socket aperture of motor head (26), and is fixing by jump ring (24).During following well construction, on the O-ring seals groove of cable end housing (8) and lower end step, lay sealing ring (25), then public plug (15) is plugged in the hole of female (20), cable end is fastened on the motor head (26) with screw (27).Public plug (15) all inserts in the hole of female (20), and from radially projecting, cable core (2) is in the hole of female (20) with the coupling part of public plug (15).This structure makes above-mentioned three to cooperate shared axial dimension to shorten, and has reduced the contact resistance between the counterpart.

The utility model compared with prior art, its advantage is: it is convenient to peg graft, and need not lapped insulation film on the well site of condition difference, has avoided carrying conducting objects in the medium, and has caused lead short circuit fault and the breakdown drawback of end housing. Improve the reliability of latent oil (water) motor and cable connection, effectively prolonged the service life of latent oil (water) electric pump unit.

Claims (6)

1, a kind of coupling arrangement that is used for latent oil (water) motor and cable, by cable conductor (2), public plug (15), last pressure pad (9), following pressure pad (12), rubber blanket (10), inside and outside tongue pad sheet (13), binding ring (14) is formed cable end, spouse's socket assembly is by motor down-lead (16) with it, O-ring seals (18), lead terminal (19), female (20) socket (23) is formed, it is characterized in that: socket (23) is placed in the socket aperture of motor head (26), fixing by jump ring (24), during following well construction, public plug (15) is plugged in the hole of female (20), cable end is fastened on the motor head (26) with screw (27).

2, coupling arrangement according to claim 1 is characterized in that the outside of every cable core insulating barrier (3) is with the flexible pipe (6) of one section high insulating property.

3, coupling arrangement according to claim 1, it is characterized in that the female thread portion in cable end housing (8) lower end reaches the periphery processing axial notch of pressure pad (12) down, between binding ring (14) and following pressure pad (12), lay inside and outside tongue pad sheet (13), its outer tongue is stuck in the groove of cable end housing (8), and interior tongue is stuck in down in the groove of pressure pad (12).

4, coupling arrangement according to claim 1 is characterized in that filling insulation fat (22) in the annular space that socket (23) and female (20) form.

5, coupling arrangement according to claim 1 is characterized in that at the outside of lead-in wire sleeve pipe (16) cover with O-ring seals (18).

6, coupling arrangement according to claim 1 is characterized in that laying two seals circle (25) between cable end housing (8) and motor head (26).

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