A 35mm diameter steel wire rope for petroleum and its manufacturing method

Abstract

A 35mm diameter petroleum steel wire rope and a manufacturing method thereof, the steel wire rope comprises metal core strands, filling strands and outer strands from the inside to the outside, together forming a 6×26WS+3×19W structure, and the steel wire rope grade is 1960; wherein the metal core strand structure is 1×19W, with 3 strands; the filling strand is twisted by a high molecular polymer, with 3 strands; the outer strand structure is 1×26WS, with 6 strands. The manufacturing method comprises the steps of wire matching, strand twisting and rope twisting. The metal rope core composed of 3 strands of metal core strands of the present invention has good anti-rotation performance and belongs to the type of non-rotating steel wire rope. Compared with the metal rope core composed of 6 strands, the stress of the metal rope core after twisting is small, thereby ensuring that the structure of the steel wire rope is more stable. Compared with the steel wire rope of the same specification and structure, the metal density coefficient of the steel wire rope structure of the present invention is more than 3% greater than that of the ordinary 6-strand metal rope core.

Description

Technical Field

[0001] The invention relates to a special structure of a 35mm diameter petroleum steel wire rope product and a manufacturing method thereof, belonging to the technical field of metal product processing. Background Art

[0002] With the continuous development of oil field exploitation, deep well oil production has higher and higher performance requirements for wire ropes, which are highlighted by: high breaking tension, structural stability, and good anti-rotation performance.

[0003] Changing the structure of the wire rope and solving the rotation and structural stability of the wire rope during use are undoubtedly the fundamental problems that must be solved to increase the service life of petroleum wire ropes. Summary of the invention

[0004] The present invention aims to solve the technical problem of how to improve the structural stability, rotation resistance and breaking force of the steel wire rope.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A 35mm diameter steel wire rope for petroleum, comprising metal core strands, filling strands and outer strands from the inside to the outside, together forming a 6×26WS+3×19W structure, and the steel wire rope grade is 1960; wherein the metal core strand structure is 1×19W, the number of which is 3 strands; the filling strands are twisted by a high molecular polymer, the number of which is 3 strands; the outer strand structure is 1×26WS, the number of which is 6 strands.

[0007] A method for manufacturing a 35mm diameter petroleum steel wire rope, comprising the following steps:

[0008] Step 1: Wire rope matching:

[0009] The steel wires of the metal rope core strands are arranged from inside to outside as 1-6-6+6, which are the center wire, the first layer wire, the second layer large wire and the small wire. The diameter of the center wire is 1.50mm, the diameter of the first layer wire is 1.40mm, the diameter of the second layer large wire is 1.41mm, and the diameter of the second layer small wire is 1.0mm.

[0010] The outer strands of steel wire are arranged from inside to outside as 1-5-5+5-10, which are divided into center wire, first layer wire, second layer large wire, second layer small wire, and outer layer wire. The diameter of the center wire is 1.0mm, the diameter of the first layer wire is 1.50mm, the diameter of the second layer large wire is 1.80mm, the diameter of the second layer small wire is 1.38mm, and the diameter of the outer layer wire is 2.55mm.

[0011] Step 2: Twisting:

[0012] 1) When twisting, the wire pressing shoe is selected according to the diameter of the strand. The specification of the wire pressing shoe is selected according to 0.96 times the theoretical strand diameter. There shall be no twisting defects such as broken wire, damaged wire and collapsed wire during the production process; twisting process parameters: metal rope core strand diameter 6.35mm, twist pitch 47.0mm; outer strand diameter 11.41mm, twist pitch 92.0mm;

[0013] 2) The filling strands are prepared by mesh tear film according to the number of strands and twisted into high molecular polymer strands on a stranding machine, with a diameter of 4.40-4.60 mm and a twist pitch of 39.0 mm;

[0014] Step 3: Twisting the rope:

[0015] 1) The metal rope core is twisted from 3 strands of 19W structure. Process parameters: metal rope core diameter 13.90mm, lay length 68.0mm, lay length multiple 4.89, the ratio of lay length to metal rope core diameter, the twist type and direction are right alternating lay;

[0016] 2) The filling strands are embedded between the two grooves of the metal rope core by adopting the wire drum method, and then the 6-strand 26WS structure is wrapped outside and twisted. The wire rope lay length is 230.0mm, and the twist type and direction are right alternating twist.

[0017] The beneficial effects of adopting the above technical solution are:

[0018] 1. The metal rope core composed of three metal rope core strands of the present invention has good anti-rotation performance and belongs to the type of non-rotating steel wire rope. Compared with the metal rope core composed of six strands, the stress of the metal rope core after twisting is small, thereby ensuring that the structure of the steel wire rope is more stable.

[0019] 2. Compared with steel wire ropes of the same specification and structure, the metal density coefficient of the steel wire rope structure of the present invention is more than 3% greater than that of the ordinary 6-strand metal rope core. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the steel wire rope structure of the present invention.

[0021] In the figure: 1-metal core strand, 2-filling strand, 3-outer strand. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1As shown: a 35mm diameter petroleum steel wire rope, which includes a metal rope core strand 1, a filling strand 2 and an outer strand 3 from the inside to the outside, together forming a 6×26WS+3×19W structure, and the wire rope grade is 1960; wherein the metal rope core strand 1 has a structure of 1×19W and has 3 strands; the filling strand 2 is twisted by a high molecular polymer and has 3 strands; the outer strand 3 has a structure of 1×26WS and has 6 strands.

[0024] A method for manufacturing a 35mm diameter petroleum steel wire rope, comprising the following steps:

[0025] Step 1: Wire rope matching:

[0026] The steel wires of the metal rope core strand 1 are arranged from inside to outside as 1-6-6+6, which are center wire, first layer wire, second layer large wire and small wire in sequence. The diameter of the center wire is 1.50 mm, the diameter of the first layer wire is 1.40 mm, the diameter of the second layer large wire is 1.41 mm, and the diameter of the second layer small wire is 1.0 mm.

[0027] The steel wires of the outer strand 3 are arranged from inside to outside as 1-5-5+5-10, and are divided into a center wire, a first layer wire, a second layer large wire, a second layer small wire, and an outer layer wire. The diameter of the center wire is 1.0 mm, the diameter of the first layer wire is 1.50 mm, the diameter of the second layer large wire is 1.80 mm, the diameter of the second layer small wire is 1.38 mm, and the diameter of the outer layer wire is 2.55 mm.

[0028] Step 2: Twisting:

[0029] 1) When twisting, the wire pressing shoe is selected according to the diameter of the strand. The specification of the wire pressing shoe is selected according to 0.96 times the theoretical strand diameter. There shall be no twisting defects such as broken wire, damaged wire, collapsed wire, etc. during the production process; Twisting process parameters: the diameter of the metal rope core strand 1 is 6.35mm, and the twist pitch is 47.0mm; the diameter of the outer strand 3 is 11.41mm, and the twist pitch is 92.0mm;

[0030] 2) Filling strand 2: Made of mesh tear film prepared according to the number of strands and twisted on a strand rope machine, with a diameter of 4.40-4.60mm and a twist pitch of 39.0mm;

[0031] Step 3: Twisting the rope:

[0032] 1) The metal rope core is twisted into 3 strands, the process parameters are: the metal rope core diameter is 13.90mm, the lay length is 68.0mm, the lay length multiple is 4.89 (the ratio of the lay length to the metal rope core diameter), and the twisting type and direction are right alternating twist;

[0033] 2) The filling strands are embedded between the two grooves of the metal rope core by adopting the wire drum method, and then 6 strands of 26WS are wrapped outside to form a twisted wire rope. The lay length of the wire rope is 230.0mm, and the twist type and direction are right alternating twist.

[0034] 1. The steel wire rope consists of a metal core consisting of 3 strands, an outermost layer consisting of 6 strands, and an intermediate layer consisting of high molecular polymer strands.

[0035] 2. The metal rope core lay length multiple is 4.5 to 5.0 times, and the alternating lay method is adopted.

[0036] 3. The strands in the metal rope core are of 19W structure and the strands in the outermost layer are of 26WS structure.

[0037] 4. The polymer strands are embedded between the metal rope core and the outermost layer.

Claims

1. A 35mm diameter steel wire rope for petroleum, characterized by: It comprises, from the inside to the outside, a metal core strand (1), a filling strand (2) and an outer strand (3), which together form a 6×26WS+3×19W structure, and the steel wire rope grade is 1960; wherein the metal core strand (1) has a structure of 1×19W and a number of 3 strands; the filling strand (2) is twisted from a high molecular polymer and has a number of 3 strands; the outer strand (3) has a structure of 1×26WS and has a number of 6 strands; The metal rope core strand (1) has a strand diameter of 6.35 mm and a lay pitch of 47.0 mm; The outer strand (3) has a strand diameter of 11.41 mm and a lay pitch of 92.0 mm; The filling strand (2) has a diameter of 4.40-4.60 mm and a twist pitch of 39.0 mm.

2. The method for manufacturing a steel wire rope according to claim 1, comprising the following steps: Step 1: Wire rope matching: The steel wires of the metal rope core strand (1) are arranged from inside to outside in the form of 1-6-6+6, which are center wire, first layer wire, second layer large wire and small wire in sequence. The diameter of the center wire is 1.50 mm, the diameter of the first layer wire is 1.40 mm, the diameter of the second layer large wire is 1.41 mm, and the diameter of the second layer small wire is 1.0 mm. The steel wires of the outer strand (3) are arranged from inside to outside in the form of 1-5-5+5-10, and are divided into a center wire, a first layer wire, a second layer large wire, a second layer small wire, and an outer layer wire. The diameter of the center wire is 1.0 mm, the diameter of the first layer wire is 1.50 mm, the diameter of the second layer large wire is 1.80 mm, the diameter of the second layer small wire is 1.38 mm, and the diameter of the outer layer wire is 2.55 mm. Step 2: Twisting: 1) When twisting the strands, select the wire pressing shoe according to the strand diameter. The specification of the wire pressing shoe should be selected according to 0.96 times the theoretical strand diameter. There should be no twisting defects such as broken wire, damaged wire and collapsed wire during the production process; 2) Filling strand (2): Made by twisting a mesh tear film according to the number of strands on a stranding machine; Step 3: Twisting the rope: 1) The metal rope core is twisted into 3 strands, and the process parameters are: the metal rope core diameter is 13.90mm, the lay length is 68.0mm, the lay length multiple is 4.89, and the lay length multiple refers to the ratio of the lay length to the metal rope core diameter. The twisting type and direction are right alternating twists; 2) The filling strands are embedded between the two grooves of the metal rope core by adopting the wire drum method, and then 6 strands of 26WS are wrapped outside to form a twisted wire rope. The lay length of the wire rope is 230.0mm, and the twist type and direction are right alternating twist.

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