A hose, its matching automatic retracting and releasing device and its application

Abstract

The present invention relates to the technical field of oilfield nitrogen transportation, and specifically to a hose, its matching automatic retracting and releasing equipment and its application, the hose comprising an inner rubber layer and an outer rubber layer, a fiber reinforcement layer is arranged between the inner rubber layer and the outer rubber layer, and an outer fiber protective layer is sleeved on the outer wall of the outer rubber layer, an automatic retracting and releasing equipment for the hose, and an oilfield centralized nitrogen production and injection equipment, the oilfield centralized nitrogen production and injection equipment comprising an air compressor, a PSA nitrogen generator, a supercharger and a water injection pump connected in sequence. The centralized nitrogen production and injection method of the present invention can effectively reduce the power load and cost, reduce the equipment relocation cost and time, and improve the purity of the nitrogen production. The hose of the present invention can be flattened and rolled up, and can be quickly laid by matching automatic retracting and releasing equipment. The length of a single hose can reach 200 meters, which saves the construction time of short-distance frequent connections. It is connected by a quick connector, reliable and safe without welding, heat-resistant, UV-resistant, and wear-resistant, and meets the airtightness requirements of nitrogen transportation day and night in harsh outdoor environments.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield nitrogen transportation, in particular to a hose, its matching automatic retracting and releasing equipment and application thereof. Background Art

[0002] Oil reserves are declining year by year. Injecting nitrogen into oil layers to increase crude oil recovery can greatly increase the recovery rate, which is of great significance to the stable and high production of my country's oil industry.

[0003] Traditional nitrogen production and injection generally use skid-mounted pressure swing adsorption nitrogen production equipment for single-well dispersed nitrogen production and injection. There are nearly 40 sets of nitrogen production and injection equipment serving the Northwest Oilfield. With the continuous improvement of the requirements for gas injection oil production, cost reduction and efficiency improvement, problems such as frequent equipment relocation, short effective working time, and low nitrogen purity have become more prominent. If centralized nitrogen production is used, ordinary steel pipes cannot be laid and reeled quickly and frequently, ordinary reinforced hoses cannot achieve high pressure (pressure delivery above 1Mpa) or cannot be flattened, or have various defects such as poor air tightness at high temperatures outdoors, insufficient UV resistance, or small caliber and insufficient gas transmission. To this end, we propose a hose, its matching automatic retraction and release equipment and its application. Summary of the invention

[0004] The object of the present invention is to provide a hose, its matching automatic retracting and releasing device and its application, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hose, comprising an inner rubber layer and an outer rubber layer, a fiber reinforcement layer is arranged between the inner rubber layer and the outer rubber layer, an outer fiber protective layer is sleeved on the outer wall of the outer rubber layer, and the outer fiber protective layer is made of high-strength modified polyester fiber woven in a warp and weft structure.

[0006] A hose automatic retracting and releasing device comprises a carrying platform, the carrying platform comprises a base at the bottom, a chassis is arranged on the right side of the top of the carrying platform, a reduction motor is installed inside the chassis, an output end of the reduction motor extends to the outside of the chassis and is fixed with a shaft, a limiting disk 1 is fixed on the right side of the outer wall of the shaft, a limiting disk 2 is movably installed on the left end of the shaft, a reel is slidably installed on the outer wall of the shaft, two vertical poles are fixed on the front side of the top of the carrying platform, an upper cross bar is fixed between the tops of the two vertical poles, an auxiliary reel is slidably connected to the bottom of the upper cross bar, and a reel is provided on the auxiliary reel There is a channel for the hose to pass through, a friction wheel is rotatably installed inside the auxiliary reel, the top of the friction wheel extends into the inside of the channel, a central axis is fixed at the axis of the friction wheel, gears are fixed to the outer walls on both sides of the central axis, vertical guide rods are arranged on the left and right sides of the channel, racks that mesh with the gears are sleeved on the outside of the vertical guide rods, limiting grooves for the racks to move are opened on the left and right sides of the auxiliary reel, the bottom of the vertical guide rod is fixed to the bottom of the limiting groove, and an upper pressure plate for flattening the hose is connected to the top between the two racks.

[0007] As a further configuration of the above scheme, a T-shaped slider is fixed in the middle of the top of the auxiliary reel, and a T-shaped slide groove adapted to the T-shaped slider is opened at the bottom of the upper cross bar. The T-shaped slide groove is consistent with the length of the winding tube and is located directly in front of the winding tube.

[0008] As a further configuration of the above solution, axial sliding grooves are formed at equal intervals on the outer wall of the shaft rod, and sliding strips are fixedly extended inwardly at equal intervals on the inner wall of the roller tube.

[0009] As a further configuration of the above scheme, a thread groove is provided at the left end of the shaft rod, and a thread rod matching the thread groove is fixed in the middle of the second right end of the limiting plate.

[0010] As a further configuration of the above solution, both left and right sides of the auxiliary reel are provided with limiting grooves for movement of the rack, and the bottom of the vertical guide rod is fixed to the bottom of the limiting groove.

[0011] The invention discloses a centralized nitrogen production and gas injection equipment for oil fields, comprising an air compressor, a PSA nitrogen generator, a booster and a water injection pump which are connected in sequence.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. During use, the inner rubber layer and the outer rubber layer of the hose of the present invention realize shielding between media, the fiber reinforcement layer realizes the conveying pressure, and the outer fiber protective layer realizes the functions of UV shielding, heat shielding, and wear protection. The hose can be directly used for oil field nitrogen transportation. The oil field adopts a centralized nitrogen production scheme, which reduces the construction and operation costs of the project, improves the nitrogen concentration and nitrogen production, avoids the safety hazards caused by insufficient purity of on-site nitrogen production, improves work efficiency, and enhances benefits. The hose can be flattened and rolled up, and the length of a single hose can reach 200 meters. It does not require welding or frequent connections, can be quickly and automatically retracted and released, is heat-resistant, UV-resistant, and wear-resistant, meets the airtightness requirements for outdoor day and night nitrogen transportation, and has a large gas transportation volume.

[0013] 2. The present invention starts the reduction motor to drive the shaft to rotate, causing the reel to rotate and the hose to be rolled up. The outer wall of the hose contacts the friction wheel, driving the friction wheel to rotate, causing the gear to rotate. At this time, the rotation of the gear drives the rack meshing with it to move downward, causing the upper pressure plate to move downward accordingly, thereby flattening the hose, making it easier to flatten and roll up the hose, achieving an effect of automatic and rapid winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the hose of the present invention; Figure 2 It is a structural schematic diagram of the automatic retracting and releasing device of the hose of the present invention; Figure 3 A top view of the automatic retractable hose device of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the auxiliary reel of the present invention; Figure 5 It is a schematic diagram of the internal structure of the auxiliary reel of the present invention.

[0016] In the figure: 1. Inner rubber layer; 2. Outer rubber layer; 3. Fiber reinforcement layer; 4. Outer fiber protective layer; 5. Carrying platform; 51. Base; 6. Chassis; 7. Reducer motor; 8. Shaft; 81. Axial slide; 9. Limiting plate 1; 10. Limiting plate 2; 101. Threaded rod; 11. Reel; 12. Vertical rod; 13. Upper cross bar; 14. Auxiliary reel; 141. Channel; 142. T-shaped slider; 143. Limiting groove; 15. Friction wheel; 16. Rack; 17. Vertical guide rod; 18. Middle shaft; 19. Gear; 20. Upper pressure plate. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 5 , and describes the application in detail with reference to embodiments.

[0019] A hose, such as Figure 1 As shown, it includes an inner rubber layer 1 and an outer rubber layer 2, a fiber reinforcement layer 3 is arranged between the inner rubber layer 1 and the outer rubber layer 2, and an outer fiber protective layer 4 is sleeved on the outer wall of the outer rubber layer 2. The outer fiber protective layer 4 is not an integral structure with the inner rubber layer 1, the outer rubber layer 2, and the fiber reinforcement layer 3, and can be used as a replacement consumable, which is more economical and flexible. The outer fiber protective layer 4 is made of high-strength modified polyester fiber woven in a warp and weft structure. After the outer fiber protective layer 4 is woven and formed, it needs to go through processes such as impregnation and drying. The impregnation liquid is composed of color paste, anti-UV agent, lubricant and other components to improve the corrosion resistance of the outer fiber protective layer 4. When the hose is used, the inner rubber layer 1 and the outer rubber layer 2 realize the function of shielding and isolating the conveying medium, the fiber reinforcement layer 3 realizes the function of bearing pressure, and the outer fiber protective layer 4 realizes the functions of UV protection, heat isolation, wear resistance and the like. The diameter of the hose is 400mm, and the gas delivery volume is large. The hose can be flattened and rolled up, and the length of a single hose can reach 200 meters. It does not require welding or frequent connections, and can be quickly and automatically retracted and released. It is heat-resistant, UV-resistant, and wear-resistant, and meets the airtightness requirements for outdoor nitrogen delivery day and night.

[0020] An automatic hose retracting and releasing device, such as Figure 2-Figure 5As shown, it includes a carrying platform 5, and the carrying platform 5 includes a base 51 at the bottom. A chassis 6 is arranged on the right side of the top of the carrying platform 5. A reduction motor 7 is installed inside the chassis 6. The output end of the reduction motor 7 extends to the outside of the chassis 6 and is fixed with a shaft rod 8. A limit plate 1 9 is fixed on the right side of the outer wall of the shaft rod 8, and a limit plate 2 10 is movably installed on the left end of the shaft rod 8. A reel 11 is slidably installed on the outer wall of the shaft rod 8, and one end of the reel 11 abuts against the limit plate 2 10, and the other end abuts against the limit plate 1 9. When the limit plate 2 10 is installed on the shaft rod 8, the reel 11 is difficult to slide. Two vertical poles 12 are fixed on the front side of the top of the carrying platform 5, and an upper cross bar 13 is fixed between the tops of the two vertical poles 12. An auxiliary reel 14 is slidably connected to the bottom of the upper cross bar 13, and a channel 141 for the hose to pass through is opened on the auxiliary reel 14. A friction wheel 15 is rotatably installed inside the auxiliary reel 14. The top of the hose extends to the inside of the channel 141. When the hose passes through the channel 141, its bottom contacts the top of the friction wheel 15. The outer wall of the friction wheel 15 is evenly provided with raised particles. When the hose contacts the friction wheel 15, the friction force is large, which will drive the friction wheel 15 to rotate. A central axis 18 is fixed at the axis of the friction wheel 15. The left and right ends of the central axis 18 are rotatably connected to the auxiliary reel 14. Gears 19 are fixed to the outer walls of the left and right sides of the central axis 18. Vertical guide rods 17 are arranged on the left and right sides of the channel 141. The outside of the vertical guide rods 17 are sleeved with racks 16 that mesh with the gears 19. Limiting grooves 143 for the racks 16 to move are provided on the left and right sides of the auxiliary reel 14. The bottom of the vertical guide rod 17 is fixed to the bottom of the limiting groove 143. An upper pressing plate 20 for flattening the hose is connected to the top between the two racks 16. A guide hole for the vertical guide rod 17 to pass through is provided on the rack 16.

[0021] A T-shaped slider 142 is fixed in the middle of the top of the auxiliary reel 14, and a T-shaped slide groove adapted to the T-shaped slider 142 is opened at the bottom of the upper cross bar 13. The T-shaped slide groove is consistent with the length of the winding tube 11 and is located directly in front of the winding tube 11. The auxiliary reel 14 slides left and right at the bottom of the upper cross bar 13 through the T-shaped slider 142, so that the hose wound at different positions on the outer wall of the winding tube 11 can pass straight through the channel 141 on the auxiliary reel 14.

[0022] The outer wall of the shaft rod 8 is provided with axial sliding grooves 81 at equal intervals, and the inner wall of the reel tube 11 is provided with sliding strips extending inward at equal intervals. A threaded groove is provided at the left end of the shaft rod 8, and a threaded rod 101 matching the threaded groove is fixed in the middle of the right end of the limiting plate 10. When the rolled hose needs to be removed, the limiting plate 10 is first rotated to make the threaded rod 101 screw out of the threaded groove on the shaft rod 8, and then the reel tube 11 is pushed to make the reel tube 11 slide in the axial sliding groove 81 through the sliding strip, and finally the reel tube 11 slides out from the outer wall of the shaft rod 8, and the rolled hose can be taken out at this time.

[0023] A centralized nitrogen production and gas injection equipment for oil fields, comprising an air compressor, a PSA nitrogen generator, a booster and a water injection pump (not shown) connected in sequence. The specific connection structures and action mechanisms of the air compressor, the PSA nitrogen generator, the booster and the water injection pump are all prior art and will not be described in detail here. By changing the decentralized nitrogen production and nitrogen injection method to the centralized nitrogen production and gas injection method, the power load and cost can be effectively reduced, the equipment relocation cost and time can be reduced, and the purity of the nitrogen produced can be improved.

[0024] Working principle: When an automatic hose retracting and releasing device is used, the shaft 8 is driven to rotate by turning on the reduction motor 7, so that the reel 11 rotates and the hose is reeled in. The hose passes through the channel 141 from the front of the auxiliary reel 14 and is reeled on the outer wall of the reel 11. During this process, the outer wall of the hose contacts the friction wheel 15, driving the friction wheel 15 to rotate clockwise, causing the central axis 18 to rotate clockwise, causing the gear 19 to rotate clockwise. At this time, the gear 19 rotates and drives the rack 16 meshing therewith to move downward. The two racks 16 move downward at the same time, causing the upper pressure plate 20 to move downward accordingly, thereby pressing the top of the hose downward and flattening the hose, which is convenient for flattening and reeling the hose. A limit groove 143 is provided to limit the range of movement of the rack 16, so that the upper pressure plate 20 will not crush the hose or hinder the movement of the hose.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic hose retracting and releasing device, comprising a carrying platform (5), characterized in that: The carrying platform (5) comprises a base (51) at the bottom, a case (6) is arranged on the right side of the top of the carrying platform (5), a reduction motor (7) is installed inside the case (6), an output end of the reduction motor (7) extends to the outside of the case (6) and is fixed with a shaft (8), a first limit plate (9) is fixed on the right side of the outer wall of the shaft (8), a second limit plate (10) is movably installed on the left end of the shaft (8), a reel (11) is slidably installed on the outer wall of the shaft (8), two vertical poles (12) are fixed on the front side of the top of the carrying platform (5), an upper cross bar (13) is fixed between the tops of the two vertical poles (12), an auxiliary reel (14) is slidably connected to the bottom of the upper cross bar (13), a channel (141) for the hose to pass through is opened on the auxiliary reel (14), a friction wheel (15) is rotatably installed inside the auxiliary reel (14), and the top of the friction wheel (15) The auxiliary reel (14) is provided with a central axis (18) fixed at the axis center of the friction wheel (15), and gears (19) are fixed to the outer walls on both sides of the central axis (18). Vertical guide rods (17) are provided on both sides of the channel (141), and racks (16) meshing with the gears (19) are sleeved on the outer sides of the vertical guide rods (17). An upper pressure plate (20) for flattening the hose is connected to the top between the two racks (16); a T-shaped slider (142) is fixed to the middle of the top of the auxiliary reel (14), and a T-shaped slide groove adapted to the T-shaped slider (142) is provided at the bottom of the upper cross bar (13), and the T-shaped slide groove is consistent with the length of the reel (11) and is located directly in front of the reel (11); axial slide grooves (81) are provided at equal distances on the outer wall of the shaft rod (8), and slide bars are fixed to the inner wall of the reel (11) extending inward at equal distances.

2. The automatic hose retracting and releasing device according to claim 1, characterized in that: A threaded groove is formed at the left end of the shaft rod (8), and a threaded rod (101) that cooperates with the threaded groove is fixed in the middle of the right end of the second limiting plate (10).

3. The automatic hose retracting and releasing device according to claim 1, characterized in that: The auxiliary reel (14) is provided with limit slots (143) on both left and right sides for the rack (16) to move, and the bottom of the vertical guide rod (17) is fixed to the bottom of the limit slot (143).

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