Reinforced cable used for submersible pump

Abstract

The present application relates to a reinforced cable used for submersible pump, consisting of a fluororubber sheath, a filler, wire ropes and signal cables. The wire ropes and the signal cables are arranged in a central region of the cable; the filler is filled in the surrounding, and the fluororubber sheath is extruded outside the filler; and the signal cable comprises a conductor and an insulating bush, a sintered membrane is formed on an outer wall of the conductor, and the insulating bush is extruded outside the conductor.

Claims

1. A reinforced cable used for submersible pump, consisting of a fluororubber sheath, a filler, wire ropes and signal cables, wherein the wire ropes and the signal cables are arranged in a central region of the cable, the filler is filled in the surrounding, and the fluororubber sheath is extruded outside the filler, and each of the signal cables comprises a conductor and an insulating bush which is extruded outside the conductor, and wherein a sintered membrane is provided on an outer wall of the conductor, a rope casing is provided outside the wire rope, and the wire rope has a diameter of 6-12 mm and the rope casing has a thickness of 0.4-0.6 mm.

2. The reinforced cable used for submersible pump according to claim 1, wherein the fluororubber sheath is a F46 fluororubber sheath.

3. The reinforced cable used for submersible pump according to claim 2, wherein there are four wire ropes and three signal cables, with one wire rope being arranged in the center of the cable, while the other three wire ropes and the three signal cables being uniformly arranged around the central wire rope; or there are three wire ropes and four signal cables, with one signal cable being arranged in the center of the cable, while the other three signal cables and the three wire ropes being uniformly arranged around the central signal cable.

4. The reinforced cable used for submersible pump according to claim 1, wherein the fluororubber sheath has a thickness of 0.3-2 mm and a density of 2.0-2.5 g/cm.sup.3, and the sintered membrane has a thickness of 0.1-0.5 mm and a density of 1.2-2.0 g/cm.sup.3.

5. The reinforced cable used for submersible pump according to claim 1, wherein the conductor has a diameter of 2-6 mm and the filler has a density of 1.0-1.5 g/cm.sup.3.

6. The reinforced cable used for submersible pump according to claim 1, wherein the wire rope is formed by stranding a plurality of small wire ropes.

7. The reinforced cable used for submersible pump according to claim 6, wherein a sum of a pitch of the small wire rope and a diameter of the conductor is less than a diameter of the wire rope.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a stereoscopic view of an implementation of a reinforced cable used for submersible pump according to the present application;

(2) FIG. 2 is a cross-sectional view of an implementation of the reinforced cable used for submersible pump according to the present application;

(3) FIG. 3 is a stereoscopic view of a wire rope of the reinforced cable used for submersible pump according to the present application;

(4) FIG. 4 is a cross-sectional view of the wire rope of the reinforced cable used for submersible pump according to the present application;

(5) FIG. 5 is a cross-sectional view of a second implementation of the reinforced cable used for submersible pump according to the present application;

(6) FIG. 6 is a cross-sectional view of a third implementation of the reinforced cable used for submersible pump according to the present application; and

(7) FIG. 7 is a cross-sectional view of a fourth implementation of the reinforced cable used for submersible pump according to the present application.

DETAILED DESCRIPTION

(8) To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described below in detail with reference to the accompanying drawings. It is to be noted that the embodiments of the present application and the features in the embodiments may be combined arbitrarily if not conflicted.

(9) As shown in FIG. 1 and FIG. 2, a structural diagram of an implementation of the reinforced cable used for submersible pump of the present application is shown. As shown, the cable consists of a fluororubber sheath 1, a filler 2, a wire rope and a signal cable; the wire rope and the signal cable are arranged in a central region of the cable; and the filler 2 is filled in the surrounding, and the fluororubber sheath 1 is extruded outside the filler 2. The wire rope is formed by stranding a plurality of small wire ropes 7, and a rope casing 5 is provided outside the wire rope. The signal cable comprises a conductor 4 and an insulating bush 3, a sintered membrane 6 is formed on an outer wall of the conductor 4, and the insulating bush 3 is extruded outside the conductor 4.

(10) The fluororubber sheath 1 in the present application may be made of F46 fluororubber. The F46 fluororubber is a copolymer of tetrafluoroethylene and hexafluoropropylene, i.e., fluorinated ethylene propylene (FEP), in which the content of hexafluoropropylene is about 15%. The F46 fluororubber, as modified material of polytetrafluoroethylene, can be continuously used below 200 C. The F46 fluororubber exhibits excellent chemical stability, and will not be corroded when coming into contact with other chemicals, except for the reaction with the fluoride element at high temperature, molten alkali metal, chlorine trifluoride and the like. And, in the prior art, there has been no solutions in which fluororubber, especially F46 fluororubber, is used as the sheath on the outermost layer of cables. The insulating bush in the present application may be a common polyethylene or polypropylene plastic bush, or may be an F46 fluororubber insulating bush. When an F46 fluororubber insulating bush is used, it has a thickness equal to or less than the thickness of the fluororubber sheath 1, for example, or of the thickness of the fluororubber sheath 1.

(11) As shown in FIG. 1 and FIG. 2, there are four wire ropes and three signal cables, with one wire rope being arranged in the center of the cable, while the other three wire ropes and the three signal cables being uniformly arranged around the central wire rope. The wire ropes are arranged in a Y-shape and the signal cables are arranged in a regular triangle. Each small wire rope 7 is formed by stranding a plurality of wires, and the small wire ropes form, as a whole, a bearing component having an enough bearing capacity.

(12) In the preferred implementation of the present application, the fluororubber sheath may have a thickness of 0.3-0.8 mm, preferably 0.5 mm, and a density of 2.0-2.5 g/cm.sup.3, preferably 2.2 g/cm.sup.3. The conductor 4 may have a diameter of 3-6 mm, for example 5 mm; the sintered membrane may have a thickness of 0.2-0.3 mm, preferably 0.23 mm, and a density of 1.2-2.0 g/cm.sup.3, preferably 1.6 g/cm.sup.3; and the insulating bush may have a thickness of 2-4 mm, preferably 2.5 mm. The wire rope has a diameter of 7-10 mm, preferably 8 mm; and the rope casing 5 has a thickness of 0.4-0.6 mm, for example, 0.5 mm. The filler has a density of 1.0-1.5 g/cm.sup.3, preferably 1.3 g/cm.sup.3. The cable used for submersible pump may have a total diameter of 20-30 mm.

(13) As shown in FIG. 5 to FIG. 7, cross-sectional views of another three implementations of the reinforced cable used for submersible pump of the present application are shown. As shown in FIG. 5, the positions of the wire ropes and the signal cables are interchanged with those in FIG. 2. The other arrangements are the same as FIG. 2. In this embodiment, the fluororubber sheath may have a thickness of 0.4-1.2 mm, preferably 0.8 mm, and a density of 2.0-2.5 g/cm.sup.3, preferably 2.2 g/cm.sup.3. The conductor 4 may have a diameter of 2-5 mm, for example 4 mm. The sintered membrane may have a thickness of 0.2-0.3 mm, preferably 0.23 mm, and a density of 1.2-2.0 g/cm.sup.3, preferably 1.6 g/cm.sup.3. The insulating bush may have a thickness of 1-3 mm, preferably 2 mm. The wire rope has a diameter of 8-12 mm, preferably 10 mm; and the rope casing 5 has a thickness of 0.5-0.8 mm, for example, 0.6 mm. The filler has a density of 1.0-1.5 g/cm.sup.3, preferably 1.3 g/cm.sup.3. The cable used for submersible pump may have a total diameter of 15-25 mm.

(14) As shown in FIG. 6, there may be a plurality of signal cables in the radial direction of the cable, for example, two signal cables. The arrangement of the wire ropes is the same as FIG. 2. The conductor 4 may have a diameter of 1-3 mm, for example 2.5 mm. The insulating bush may have a thickness of 1.5-2.5 mm, preferably 2 mm. The wire rope has a diameter of 12-16 mm, preferably 15 mm; and the rope casing 5 has a thickness of 1-1.5 mm, for example, 1.2 mm. The cable used for submersible pump may have a total diameter of 25-40 mm.

(15) As shown in FIG. 7, there are four wire ropes and four signal cables which are uniformly arranged in the circumferential direction of the cable. The conductor 4 may have a diameter of 4-8 mm, for example 6 mm; and the insulating bush may have a thickness of 3-4 mm, preferably 3 mm. The wire rope has a diameter of 6-10 mm, preferably 8 mm; and the rope casing 5 has a thickness of 2-3 mm, for example, 2.5 mm. The cable used for submersible pump may have a total diameter of 50-70 mm.

(16) It is to be noted that the number of wire ropes and signal cables is only exemplary, and does not form any limitations to the protection scope of the present application. It should be understood by those skilled in the art that the specific number and arrangement of wire ropes and signal cables can be adjusted according to actual needs.

(17) To ensure that the wire ropes have an enough bearing capacity, the pitch of the small wire rope, the diameter of the wire ropes and the diameter of the conductors should preferably fulfill the following condition: a sum of the pitch of the small wire rope and the diameter of the conductor is less than a diameter of the wire rope.

(18) Although the implementations of the present application have been described above, the disclosed contents are merely implementations used for understanding, but not for limiting, the present application. It will be appreciated by a person of ordinary skill in the art that any modifications or changes may be made to the implementations in form or detail without departing from the spirit and scope of the present application. The patent protection scope of the present application is subject to the scope as defined in the appended claims.