Device for cleaning sticky oil of oil bailing steel wire rope

Abstract

The utility model belongs to equipment in the petroleum industry, and particularly relates to a device for cleaning sticky oil of an oil bailing steel wire rope in an oil field. A locking cylinder head is connected to the upper portion in a cylinder barrel in a threaded mode, an inner hole in the lower portion of the locking cylinder head is connected with the upper end of a piston rod in a sealed mode through a dustproof ring, an oil scraping sleeve is movably installed in the inner hole of the locking cylinder head, a plurality of round hole grooves are formed in the inner hole wall of the upper middle portion of the oil scraping sleeve at equal intervals, and inner brush rings with bristles inside are installed in the round hole grooves in a clamped mode. A T-shaped upper pressing pad is installed on the upper end face of the oil scraping sleeve, the upper end face of the upper pressing pad is connected into a groove, matched with the upper pressing pad, in the locking sleeve, the arc face of the lower end of the oil scraping sleeve is installed in an arc groove of the pressing pad in a matched mode, the outer circumference of the lower cylinder head and the outer circumference of the locking cylinder head are in threaded connection with a cylinder barrel, and an upper oil inlet and an upper oil outlet are formed in the wall of the cylinder barrel. And the lower end of the piston rod is fixedly connected with the joint body through an O-shaped sealing ring. An inner brush ring is arranged on the inner hole wall of the oil scraping sleeve, and bristles are arranged on the inner brush ring and used for brushing away sticky oil between strands of the steel wire rope.

Description

Technical Field

[0001] This utility model pertains to equipment in the petroleum industry, and specifically relates to an oil-adhesive device for cleaning and removing oil from steel wire ropes used in oil fields. Background Technology

[0002] During oil extraction, crude oil from underground adheres to the oil retrieval wire rope, especially heavy oil, which is difficult to remove from its surface. This phenomenon is more severe during winter well pump inspections, as surface temperatures are tens of degrees Celsius lower than well temperatures. Once the wire rope reaches the surface, the crude oil adhering to its surface quickly solidifies. Traditional mechanical methods for removing this oil are extremely labor-intensive and time-consuming. Current technology uses scraper sleeves to remove some of the oil from the wire rope surface, but a large amount of residual oil remains in the gaps created by the strands. Furthermore, the temperature difference between the underground and surface in cold winters causes this oil to solidify rapidly in the gaps between the strands, making removal even more difficult. Over time, this increases the weight of the wire rope, reduces its flexibility, and shortens its lifespan, ultimately impacting extraction efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a simple, easy-to-use, and thorough oil scraping device for cleaning and removing oil from steel wire ropes.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows: A device for cleaning oil-adhesive steel wire ropes includes a cylinder, a piston rod, a piston sealing ring, a connector body, and an oil scraper sleeve. Its characteristic is that a locking cylinder head is threadedly connected to the upper part of the cylinder. The upper end of the piston rod is sealed in the inner hole below the locking cylinder head via a dustproof ring. An oil scraper sleeve is movably installed in the inner hole of the locking cylinder head. Multiple circular grooves are evenly spaced on the upper part of the inner wall of the oil scraper sleeve. An inner brush ring with bristles is fitted into each of the circular grooves. A T-shaped upper pressure pad is installed on the upper end face of the oil scraper sleeve. The upper end face of the upper pressure pad is connected to… The lower end of the oil scraper sleeve is fitted into the groove of the upper pressure pad inside the locking sleeve. The lower end of the pressure pad is sealed to the upper end of the piston rod. The lower cylinder head is connected to the inner hole of the lower cylinder head by a guide ring on the outer periphery below the piston rod. The cylinder barrel is connected to the outer circumference of the lower cylinder head and the locking cylinder head by threads. There are two oil inlet and outlet ports on the cylinder wall, which are connected to the oil chamber inside the cylinder. The piston is fixed to the outer periphery of the piston rod. The outer periphery of the piston is sealed to the inner wall of the cylinder barrel by a skeleton seal. The lower end of the piston rod is fixed to the connector body by an O-ring seal.

[0005] The beneficial effects of this utility model are as follows: The oil-cleaning device for oil-collecting wire ropes has an inner brush ring on the inner wall of the oil scraper sleeve, and brush bristles on the inner brush ring. The brush bristles are hard and wear-resistant. During the upward pulling of the wire rope, the brush bristles on the inner brush ring completely wrap around the outer ring of the wire rope. With the upward pulling trend of the wire rope, the brush bristles extend into the spaces between the strands and between the wires, thereby brushing away the oil stuck in the gaps between the strands and even between the wires. This solves the problem of oil sticking in places that the oil scraper sleeve cannot scrape off. It allows the wire rope to remove oil when the oil scraping and brushing are easier at higher well temperatures. It also solves the problem of oil sticking to the surface of the wire rope after it reaches the surface and is difficult to remove, thus extending the service life of the wire rope and improving oil production efficiency. Attached Figure Description

[0006] The following description, in conjunction with the accompanying drawings, illustrates specific embodiments.

[0007] Figure 1 This is a partial sectional view of the hydraulic oil scraping device.

[0008] Figure 2 yes Figure 1 Enlarged AA sectional view.

[0009] In the diagram, 1-locking sleeve; 2-locking cylinder head; 3-pressure pad; 4-cylinder locking wrench; 5-piston; 6-lower cylinder head; 7-connector body; 8-locking sleeve wrench; 9-upper pressure pad; 10-inner brush ring; 10-1-brush bristles; 11-oil scraper sleeve; 11-1-round hole groove; 12-dustproof ring; 13-cylinder; 14-skeleton seal; 15-oil inlet / outlet; 16-guide ring; 17-piston rod; 18-O-ring seal; 19-steel wire rope; A-piston rod center hole; B-oil chamber. Detailed Implementation

[0010] Example, see attached document Figure 1The oil-cleaning device for the steel wire rope is connected to the upper end of the piston rod 17 via a dustproof ring 12 in the inner hole below the locking cylinder head 2. An oil scraper sleeve 11 is movably installed in the inner hole of the locking cylinder head 2. Four circular grooves 11-1, arranged from top to bottom, are evenly spaced on the upper middle part of the inner wall of the oil scraper sleeve 11. An inner brush ring 10 with bristles 10-1 is fitted into each circular groove 11-1. The inner brush ring 10 can be a tensioning ring fitted into the circular groove 11-1, or it can be multiple arc-shaped inner brush rings spliced ​​together to form a complete circle inner brush ring 10, fixed to the inner wall of the circular groove 11-1. The inner brush ring 10 can be disassembled and replaced. The round hole groove 11-1 is recessed into the inner wall of the oil scraper sleeve 11. The inner brush ring 10 installed in the round hole groove 11-1 is also recessed into the inner wall of the oil scraper sleeve 11. This allows the bristles 10-1 on the inner wall of the inner brush ring 11 to make contact with the advancing wire rope 19, so that the bristles 10-1 can complete the work of brushing away the oil remaining between the strands of the wire rope 19, without affecting the movement of the wire rope 19 in the oil scraper sleeve 11.

[0011] The bristles 10-1 are made of nylon, which is hard and wear-resistant, and can thoroughly remove oil from the gaps formed by the braiding of the multiple strands of the steel wire rope. A T-shaped upper pressure pad 9 is mounted on the upper end face of the oil scraper sleeve 11, and the upper end face of the upper pressure pad 9 is connected to a groove inside the locking sleeve 1 that mates with the upper pressure pad 9. The arc-shaped surface at the lower end of the oil scraper sleeve 11 is fitted into the arc-shaped groove of the pressure pad 3, and the lower end face of the pressure pad 3 is sealed to the upper end face of the piston rod 17. A guide ring 16 connects to the inner hole of the lower cylinder head 6 on the lower periphery of the piston rod 17. The upper and lower ends of the cylinder barrel 13 are fixedly connected by the locking cylinder head 2 and the lower cylinder head 6 via external circumferential threads. Two oil inlet and outlet ports 15 are provided on the wall of the cylinder barrel 13, connecting to the oil chamber B inside the cylinder barrel 13. The piston 5 is fixed to the periphery of the piston rod 17, and the periphery of the piston 5 is sealed to the inner wall of the cylinder barrel 13 by a skeleton seal 14. The piston rod 17 has a center hole A, with the lower end of the center hole A corresponding to the connector body 7 and the upper end corresponding to the center hole of the oil scraper sleeve 11. The connector body 7 is fixedly connected to the lower end of the piston rod 17 using an O-ring seal 18. Concentric center holes are provided on the piston rod 17, pressure pad 3, oil scraper sleeve 11, upper pressure pad 9, and locking sleeve 1. The center hole of the oil scraper sleeve 11 has the same diameter as the wire rope, while the diameters of the other center holes are larger than the diameter of the center hole of the oil scraper sleeve 11. Locking sleeve wrenches 8 are symmetrically fixed around the locking sleeve 1, and a cylinder locking wrench 4 is fixed above and around the cylinder barrel 13.

[0012] The working process of this utility model is as follows: the inner brush ring 10 with bristles 10-1 set on the inner surface is installed in the round hole groove 11-1 of the oil scraper sleeve 11, the steel wire rope 19 passes through the central hole of the whole device, and then the upper pressure pad 9, the oil scraper sleeve 11, and the pressure pad 3 are pressed into the oil cylinder locking cylinder head 2 by the locking sleeve 1, and manually locked by the locking sleeve wrench 8. When oil scooping begins, as the wire rope rises and is lifted, oil enters through the inlet / outlet 15 at the lower end of the cylinder 13, pushing the piston 5 upward. The piston rod 17 presses upward against the pressure pad 3. The lowermost end of the oil scraper sleeve 11 is designed as a tapered opening, wider at the top and narrower at the bottom. Under pressure, the pressure pad 3 squeezes the tapered opening at the lowermost end of the oil scraper sleeve 11 upward, causing the tapered opening of the oil scraper sleeve 11 to contract inward. This effectively grips the upward-moving wire rope 19, scraping off the oil adhering to the surface of the wire rope 19. As the wire rope 19 continues to move upward to the upper middle part of the oil scraper sleeve 11, this position is far from the squeezing kinetic energy of the pressure pad 3 on the oil scraper sleeve 11. The orifice diameter of the oil scraper sleeve 11 tends to be a stable and normal size, and there is no longer a tendency to grip the wire rope 19. The inner wall of the oil scraper sleeve 11... There are some gaps between the wire rope 19 and the inner brush ring 10. When the wire rope 19 passes through the four inner brush rings 10 from bottom to top, the hard bristles 10-1 on the inner surface of the inner brush ring 10 will come into contact with the wire rope 19. The upward relative movement of the wire rope 19 with respect to the bristles 10-1 causes countless dense bristles 10-1 to brush off the sticky oil in the gaps between the strands of the wire rope 19. The fine bristles 10-1 will also penetrate into the gaps between the wires of the wire rope 19 to brush off the sticky oil there as well. This solves the problem that the oil scraper sleeve 11 can only scrape off the sticky oil on the surface of the wire rope 19, greatly reducing the sticky oil remaining after the wire rope 19 enters the ground and increasing the service life of the wire rope 19. Multiple sets of inner brush rings 10 can be set from bottom to top as needed. When the wire rope 19 is lifted upwards, it passes through multiple sets of inner brush rings 10, and the bristles 10-1 on them gradually brush away the oil adhering to the wire rope 19. During maintenance and repair, the inner brush rings 10 can be removed from the round hole groove 11-1 for replacement, thereby ensuring that the bristles 10-1 continue to remove oil.

Claims

1. A device for cleaning oil-adhesive steel wire ropes, comprising a cylinder, a piston rod (17), a piston seal ring, a connector body (7), and an oil scraper sleeve (11), characterized in that, A locking cylinder head (2) is threaded into the upper part of the cylinder barrel. The upper end of the piston rod (17) is sealed in the inner hole below the locking cylinder head (2) by a dust seal. An oil scraper sleeve (11) is movably installed in the inner hole of the locking cylinder head (2). Multiple round hole grooves (11-1) are evenly spaced on the upper part of the inner hole wall of the oil scraper sleeve (11). An inner brush ring (10) with bristles (10-1) is installed in the round hole groove (11-1). A T-shaped upper pressure pad (9) is installed on the upper end face of the oil scraper sleeve (11). The upper end face of the upper pressure pad (9) is connected to the groove in the locking sleeve (1) that mates with the upper pressure pad (9). The lower end arc surface of the oil scraper sleeve (11) is fitted into the arc groove of the pressure pad. Inside, the lower end face of the pressure pad (3) is sealed and connected to the upper end face of the piston rod (17). The inner hole of the lower cylinder head (6) is connected by a guide ring (16) on the periphery below the piston rod (17). The cylinder barrel is connected to the outer circumference of the lower cylinder head (6) and the locking cylinder head (2). Two oil inlets and outlets (15) are provided on the wall of the cylinder barrel. The two oil inlets and outlets (15) are connected to the oil chamber inside the cylinder barrel. The piston (5) is fixed on the periphery of the piston rod (17). The inner wall of the cylinder barrel is sealed by a skeleton seal (14) on the periphery of the piston (5). The connector body (7) is fixed and connected by an O-ring seal (18) at the lower end of the piston rod (17). The steel wire rope (19) is threaded through the center hole of the entire device.

2. The device for cleaning oil-adhesive steel wire ropes according to claim 1, characterized in that, The inner brush ring (10) on the inner wall of the circular groove (11-1) can be removed and replaced.

3. The device for cleaning oil-adhesive steel wire ropes according to claim 1, characterized in that, The bristles (10-1) are made of a hard material.

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