Steel wire cable terminal bearing device

Abstract

The utility model relates to a steel wire cable terminal bearing device, which comprises a salvage head, a steel wire cable terminal bearing device, a steel wire cable terminal bearing device and a steel wire cable terminal bearing device, and is characterized in that the interior of the salvage head is of a hollow structure; the steel wire cable comprises an outer-layer steel wire and an inner-layer steel wire cable, and the inner-layer steel wire cable comprises two layers of steel wires and an inner-layer cable; the lower portion of the outer-layer steel wire is tightly pressed on the inner conical face of the fishing head through a first conical block, and the position of the first conical block is tightened and fixed through a first pre-tightening screw. A clamping block is further arranged, the lower portion of the two-layer steel wire is tightly pressed on the conical surface of the clamping block through a second conical block, the position of the second conical block is tightened and fixed through a second pre-tightening screw, stress between the two layers is consistent, the pulling force borne by the terminal device of the steel wire cable is borne by the two layers of conical blocks and the conical surface, and the more the pulling force is, the tighter the pulling force is. And the safety of the electric submersible pump is ensured, and meanwhile, the internal cable is protected from influencing power transmission due to stress.

Description

Technical Field

[0001] The utility model relates to the technical field of cable terminals, in particular to a steel wire cable terminal bearing device. Background Art

[0002] During the exploitation of offshore or onshore oil fields, electric power is transmitted to the downhole permanent magnet submersible motor by using a fishing cable, which directly drives the rodless pump to lift the well fluid to the ground after pressurization. In actual use, the steel cable terminal needs to bear the load of the electric pump and separate the power cable in the cable to ensure that the power supply is not affected. In this way, the bearing device of the steel cable terminal plays a vital role. In the prior art, the installation of steel cables requires large-scale construction equipment for welding, and the exposed steel wire on the outside after connection will increase the resistance during the process of lowering into the well or pulling out. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a steel wire cable terminal bearing device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A steel wire cable terminal bearing device comprises: a fishing head, the interior of the fishing head is a hollow structure, and a steel wire cable is passed through the fishing head; the steel wire cable comprises an outer steel wire and an inner steel wire cable; the reserved portion of the outer steel wire covers the outside of the inner steel wire cable, and the inner steel wire cable is sleeved with a first conical block on the outside, the first conical block presses the lower part of the outer steel wire tightly against the inner conical surface of the fishing head, and the lower side of the first conical block is provided with a first pre-tightening screw, and the first pre-tightening screw tightens the position of the first conical block.

[0006] The length of the reserved portion of the outer layer steel wire is not less than the length of the conical surface of the first conical block.

[0007] The inner steel wire cable is sheathed with a clamping block on the outside, and the clamping block is placed on the lower side of the first pre-tightening screw; the inner steel wire cable includes two layers of steel wire and an inner cable; the reserved part of the second layer of steel wire is covered on the outside of the inner cable, and the inner cable is sheathed with a second conical block on the outside, and the second conical block presses the lower part of the two layers of steel wire tightly against the conical surface of the clamping block, and the lower side of the second conical block is provided with a second pre-tightening screw, and the second pre-tightening screw tightens the position of the second conical block.

[0008] The length of the reserved portion of the second layer of steel wire is not less than the length of the conical surface of the second conical block.

[0009] The bottom of the fishing head is connected with the penetrator through a flexible sleeve.

[0010] The beneficial effects of the utility model are as follows: the utility model uses two layers of conical blocks and conical surfaces to bear the tension of the terminal equipment of the steel wire cable, and the tension becomes tighter and tighter, which ensures the safety of the submersible electric pump while protecting the internal cables from affecting the power transmission due to the force. The construction process does not require large construction equipment or welding, which saves space. At the same time, there is no exposed steel wire on the outside after the connection, and it will not increase resistance during the process of lowering into the well or pulling out; the overall connection is similar to the use of multi-functional crimping, which is convenient to construct, short in construction period, high in efficiency and cost saving. During the maintenance process, the Christmas tree is dismantled, and the lower crosser and submersible electric pump are directly constructed to reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 is a cross-sectional view of the steel wire cable;

[0013] Figure 3 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0014] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0015] In the figure: 1-fishing head; 2-wire cable; 20-outer steel wire; 21-inner steel wire cable; 210-second steel wire; 211-inner cable; 3-first conical block; 4-first pre-tightening screw; 5-clamping block; 6-second conical block; 7-second pre-tightening screw; 8-through device; 9-slip sleeve;

[0016] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] like Figure 1-3As shown, a steel wire cable terminal bearing device comprises: a fishing head 1, the inside of the fishing head 1 is a hollow structure, and a steel wire cable 2 is inserted into the fishing head 1; the steel wire cable 2 comprises an outer steel wire 20 and an inner steel wire cable 21; the reserved part of the outer steel wire 20 covers the outside of the inner steel wire cable 21, and the outer part of the inner steel wire cable 21 is sleeved with a first conical block 3, the first conical block 3 presses the lower part of the outer steel wire 20 tightly against the inner conical surface of the fishing head 1, and the lower side of the first conical block 3 is provided with a first pre-tightening screw 4, and the first pre-tightening screw 4 tightens the position of the first conical block 3. The inner conical surface of the fishing head 1 and the first conical block 3 firmly clamp the outer steel wire 20, and the outer steel wire 20 will be tightened more and more, and the cooperation and fixation of the first pre-tightening screw 4 can prevent the outer steel wire 20 from falling off.

[0019] The reserved length of the outer layer steel wire 20 is not less than the conical surface length of the first conical block 3 .

[0020] like Figure 4 As shown, the inner steel wire cable 21 is provided with a clamping block 5 on the outside, and the clamping block 5 is placed on the lower side of the first pre-tightening screw 4; the inner steel wire cable 21 includes two layers of steel wires 210 and an inner cable 211; the reserved portion of the two layers of steel wires 210 covers the outside of the inner cable 211, and the inner cable 211 is provided with a second conical block 6 on the outside, and the second conical block 6 presses the lower part of the two layers of steel wires 210 tightly against the conical surface of the clamping block 5, and the second pre-tightening screw 7 is provided on the lower side of the second conical block 6, and the second pre-tightening screw 7 tightens the position of the second conical block 6. The inner conical surface of the clamping block 5 and the second conical block 6 firmly clamp the two layers of steel wires 210, and the two layers of steel wires 210 will be tightened more and more, and the cooperation and fixation of the second pre-tightening screw 7 can prevent the two layers of steel wires 210 from falling off.

[0021] The reserved length of the second layer of steel wire 210 is not less than the conical length of the second conical block 6 .

[0022] like Figure 1 As shown, the bottom of the fishing head 1 is connected to the crossing device 8 through a joint sleeve 9. The joint sleeve 9 can ensure that the direction of the crossing device 8 is not changed and the crossing device 8 is not rotated, which not only ensures the crossing of the steel wire cable, but also ensures the connection of the crossing device. During the construction and maintenance process, the lower crossing device 8 can be separated from the cable by directly disassembling the joint sleeve 9 without connecting the device, thereby reducing the construction process and improving the construction efficiency.

[0023] In summary, the utility model firmly fixes the two layers of steel wires of the steel wire cable 2, and the force between the two layers is consistent. The tension borne by the terminal equipment of the steel wire cable is borne by the two layers of conical blocks and the conical surface, and the tension becomes tighter and tighter, which ensures the safety of the submersible electric pump and protects the internal cables from affecting power transmission due to the force.

[0024] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A steel wire cable terminal bearing device, characterized in that: include: A salvage head (1), wherein the interior of the salvage head (1) is a hollow structure, and a steel wire cable (2) is inserted into the interior of the salvage head (1); the steel wire cable (2) comprises an outer steel wire (20) and an inner steel wire cable (21); a reserved portion of the outer steel wire (20) covers the outside of the inner steel wire cable (21), and a first conical block (3) is sleeved on the outside of the inner steel wire cable (21), and the first conical block (3) presses the tail of the outer steel wire (20) tightly against the inner conical surface of the salvage head (1), and a first pre-tightening screw (4) is provided on the tail side of the first conical block (3), and the first pre-tightening screw (4) tightens the position of the first conical block (3).

2. A steel wire cable terminal bearing device according to claim 1, characterized in that: The length of the reserved portion of the outer layer steel wire (20) is not less than the length of the conical surface of the first conical block (3).

3. A steel wire cable terminal bearing device according to claim 1, characterized in that: The inner layer steel wire cable (21) is provided with a clamping block (5) on the outside, and the clamping block (5) is placed on the tail side of the first pre-tightening screw (4); the inner layer steel wire cable (21) comprises two layers of steel wire (210) and an inner layer cable (211); the reserved portion of the two layers of steel wire (210) is covered on the outside of the inner layer cable (211), and the inner layer cable (211) is provided with a second conical block (6) on the outside, and the second conical block (6) presses the tail of the two layers of steel wire (210) tightly against the conical surface of the clamping block (5); the tail side of the second conical block (6) is provided with a second pre-tightening screw (7), and the second pre-tightening screw (7) tightens and fixes the position of the second conical block (6).

4. A steel wire cable terminal bearing device according to claim 3, characterized in that: The length of the reserved portion of the second layer of steel wire (210) is not less than the length of the conical surface of the second conical block (6).

5. A steel wire cable terminal bearing device according to any one of claims 1 to 4, characterized in that: The bottom of the fishing head (1) is connected to the crossing device (8) via a flexible sleeve (9).

Images