A pig

Abstract

The utility model relates to petroleum pipeline dredging technical field especially, it is a kind of pipe cleaner to alleviate existing equipment pipe cleaning efficiency is poor, easy to jam the problem of drill.This device includes the drainage device and cleaning device in the same axis;Drainage device includes the high-pressure nozzle, high-pressure spray head and high-pressure hose that communicate sequentially;Cleaning device includes dredge and connecting pipe;Dredge and connecting pipe sleeve joint;High-pressure nozzle is conical. High-pressure nozzle and rotatable high-pressure spray head cooperate, make water flow present umbrella-shaped injection, realize the preliminary flushing to pipe wall dirt, and flexible high-pressure hose cooperates righting spring, not only adapt to pipeline bend, avoid jamming, still significantly improve the advancing stability;Dredge in cleaning device adopts elastic support bowl and adjustable limiting ring design, can be according to the degree of scale flexible adjustment support bowl opening angle, give consideration to first high-efficiency removal and subsequent fine cleaning needs, extend equipment applicability.

Description

Technical Field

[0001] This utility model relates to the field of oil pipeline dredging technology, and in particular to a pipeline cleaning tool. Background Technology

[0002] Crude oil produced fluid, as a mixture generated during oilfield extraction, contains a large amount of organic matter, carbon dioxide, hydrogen sulfide, and various microorganisms and other impurities. These impurities are prone to chemical reactions and physical deposition during pipeline transportation, forming a scale layer that is difficult to remove. The scale phenomenon not only reduces the inner diameter of the pipeline and causes a decrease in transportation efficiency, but more seriously, the presence of the scale layer accelerates the corrosion process of the inner wall of the pipeline, forming a vicious cycle.

[0003] During the production fluid treatment process, scaling problems are becoming increasingly prominent, manifested as frequent blockages in key parts such as the outlet valve of the heating furnace and the outlet pipeline of the reaction tank, which seriously affects the continuous and stable operation of the surface system. The formation and deposition of scale mainly originate from the chemical reaction generated after mixing different types of produced fluids, as well as factors such as excessive dissolved oxygen and microbial growth in the system, leading to the widespread occurrence of carbonate precipitation scale and localized corrosion.

[0004] Currently, the industry commonly uses physical or chemical cleaning methods to remove wax and deposits from the inner walls of pipelines. This conventional pipeline cleaning method has significant drawbacks: it is costly, and the cleaning process poses a risk of damage to the pipeline's inner walls, affecting its long-term service life. More seriously, existing pipeline cleaning equipment is not sufficiently adaptable to high-pressure environments and cannot meet the cleaning needs of high-pressure pipelines during water injection development.

[0005] Existing pipeline cleaning equipment generally suffers from insufficient pressure-bearing capacity when dealing with high-pressure water injection pipelines, rendering it ineffective in high-pressure environments and unable to thoroughly remove deposits from the pipeline's inner walls. Furthermore, during repeated cleaning operations, the equipment's structural design fails to provide sufficient support, making it unable to effectively address secondary scaling issues on the pipeline's inner walls. This results in poor cleaning performance, shortened cleaning cycles, and increased maintenance costs and operational risks. Utility Model Content

[0006] To alleviate the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] This utility model provides a pipeline cleaning device including a drainage device and a cleaning device located on the same axis; the drainage device includes a high-pressure nozzle, a high-pressure spray head, and a high-pressure hose connected in sequence; the high-pressure spray head and the high-pressure hose are threadedly connected; the high-pressure nozzle and the high-pressure spray head are rotatably connected; the cleaning device includes a drain cleaner and a connecting pipe; the connecting pipe and the high-pressure hose are connected by a high-pressure buckle; the drain cleaner is sleeved with the connecting pipe.

[0008] Furthermore, a straightening spring is fitted onto the outer wall of the high-pressure hose.

[0009] Furthermore, the drain cleaner includes blades, a support bowl, and retaining rings; multiple retaining rings are stacked and fitted into the support bowl; multiple blades are arranged in a ring array and are engaged with the outer wall of the support bowl; the blades and the support bowl are fixedly connected by screws.

[0010] Furthermore, the connecting tube passes through the blade, the support cup, and the limiting ring in sequence.

[0011] Furthermore, the connecting pipe is fitted with at least two drain cleaners.

[0012] Furthermore, spacer rings are installed between the drain cleaners.

[0013] Furthermore, the bowl is made of a flexible material.

[0014] Furthermore, the high-pressure nozzle is conical.

[0015] Furthermore, the side of the bowl closest to the drainage device has a conical surface.

[0016] The beneficial effects of the pipeline cleaning device in this utility model are analyzed as follows:

[0017] The pipeline cleaning device provided in this solution effectively improves the efficiency and safety of oil and gas pipeline cleaning operations by combining a diversion device with a cleaning device. The high-pressure nozzle and the rotatable high-pressure nozzle work together to spray water in an umbrella shape, achieving initial flushing of the pipe wall dirt. The flexible high-pressure hose, combined with the straightening spring, not only adapts to pipeline bends and avoids blockage, but also significantly improves the stability of movement. The unclogging device in the cleaning device adopts an elastic support bowl and an adjustable limit ring design, which can flexibly adjust the opening angle of the support bowl according to the degree of scale buildup, taking into account both the needs of efficient initial cleaning and subsequent fine cleaning, and extending the applicability of the equipment. The combination of multiple unclogging devices and spacer rings further enhances the cleaning ability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the pig provided for an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the cleaning device.

[0021] Figure 3 This is a schematic diagram of the blade structure;

[0022] Figure 4 A schematic diagram of the structure supporting the bowl;

[0023] Figure 5 This is a schematic diagram of the limit ring structure;

[0024] Figure 6 This is a schematic diagram of the connecting pipe.

[0025] icon:

[0026] 100 - Drainage device; 110 - High-pressure nozzle; 120 - High-pressure spray head; 130 - High-pressure hose; 150 - Straightening spring;

[0027] 200-Cleaning device; 210-Drain cleaner; 211-Blade; 212-Support bowl; 213-Limiting ring; 220-Connecting pipe; 230-Spacer ring. Detailed Implementation

[0028] Existing pipeline cleaning equipment generally suffers from insufficient pressure-bearing capacity when dealing with high-pressure water injection pipelines, rendering it ineffective in high-pressure environments and unable to thoroughly remove deposits from the pipeline's inner walls. Furthermore, during repeated cleaning operations, the equipment's structural design fails to provide sufficient support, making it unable to effectively address secondary scaling issues on the pipeline's inner walls. This results in poor cleaning performance, shortened cleaning cycles, and increased maintenance costs and operational risks.

[0029] In view of this, as shown in the figure, this solution provides a pipeline pig to alleviate the above problems.

[0030] This device includes a drainage device 100 and a cleaning device 200 located on the same axis; the drainage device 100 includes a high-pressure nozzle 110, a high-pressure spray head 120 and a high-pressure hose 130 connected in sequence; the high-pressure spray head 120 and the high-pressure hose 130 are threadedly connected; the high-pressure nozzle 110 and the high-pressure spray head 120 are rotatably connected; the cleaning device 200 includes a drain cleaner 210 and a connecting pipe 220; the connecting pipe 220 and the high-pressure hose 130 are connected by a high-pressure buckle; the drain cleaner 210 is sleeved with the connecting pipe 220; the high-pressure nozzle 110 is conical.

[0031] Specifically, during the pipe cleaning operation, the entire pipe cleaner is placed into the pipe to be cleaned, and the connecting pipe 220 is connected to an external high-pressure water pump. Water flows from one side of the cleaning device 200 into the diversion device 100. When the water is sprayed out from the high-pressure nozzle 120, the high-pressure nozzle 120 rotates at high speed around the high-pressure nozzle 110 under the action of the water flow, so that the water is sprayed out in an umbrella shape, which performs preliminary cleaning of loose dirt and impurities on the inner wall of the pipe. The high-pressure hose 130 has a certain degree of flexibility and can bend and deform appropriately at the bends of the pipe.

[0032] In this design, a straightening spring 150 is fitted on the outer wall of the high-pressure hose 130. The elastic restoring force of the straightening spring 150 suppresses the eccentric vibration of the high-pressure hose 130, preventing the high-pressure hose 130 from getting stuck or deviating from the center of the pipe at bends, thus ensuring that it can pass through bends smoothly.

[0033] In this solution, as shown in the figure, the drain cleaner 210 includes blades 211, a support bowl 212, and a limiting ring 213; multiple limiting rings 213 are stacked and fitted into the support bowl 212; multiple blades 211 are arranged in a ring array and are engaged with the outer wall of the support bowl 212; the blades 211 and the support bowl 212 are fixedly connected by screws; the connecting pipe 220 passes through the blades 211, the support bowl 212, and the limiting ring 213 in sequence; at least two drain cleaners 210 are sleeved on the connecting pipe 220; a spacer ring 230 is provided between the drain cleaners 210; the support bowl 212 is made of elastic material; the side of the support bowl 212 near the drainage device 100 has a conical surface.

[0034] Specifically, the pipe cleaning tool moves forward continuously under the impetus of the flow, and the unblocking device 210 comes into contact with the blockage on the inner wall of the pipe and applies a certain pressure to it, thereby physically clearing it;

[0035] During the initial pipe cleaning operation, the limiting ring 213 can be omitted from the drain cleaner 210. At this time, the support bowl 212 opens naturally at its smallest angle, improving the pipe cleaner's passage and facilitating the initial scraping of heavily scaled areas while avoiding blockages. During the secondary pipe cleaning operation, a limiting ring 213 of appropriate size can be added according to the scale condition in the pipe. After installing the limiting ring 213, the expansion angle of the support bowl 212 is increased, allowing the outer wall of the support bowl 212 to fully contact the inner wall of the pipe, thereby improving its cleaning efficiency.

[0036] Sensors can also be installed inside the 212-type pig to monitor its position and speed in real time and transmit the information to external devices via wireless signals. This ensures that when the pig encounters a blockage, the location of the blockage can be identified in a timely manner, allowing operators to take appropriate measures and ensuring the smooth completion of the pigging operation.

[0037] This solution has at least the following beneficial effects:

[0038] The pipeline cleaning device provided in this solution effectively improves the efficiency and safety of oil and gas pipeline cleaning operations by combining a diversion device with a cleaning device. The high-pressure nozzle and the rotatable high-pressure nozzle work together to spray water in an umbrella shape, achieving initial flushing of the pipe wall dirt. The flexible high-pressure hose, combined with the straightening spring, not only adapts to pipeline bends and avoids blockage, but also significantly improves the stability of movement. The unclogging device in the cleaning device adopts an elastic support bowl and an adjustable limit ring design, which can flexibly adjust the opening angle of the support bowl according to the degree of scale buildup, taking into account both the needs of efficient initial cleaning and subsequent fine cleaning, and extending the applicability of the equipment. The combination of multiple unclogging devices and spacer rings further enhances the cleaning ability.

[0039] Meanwhile, the drain cleaner can integrate sensors to achieve real-time monitoring of position and speed, making it easy to detect blockages in a timely manner and improve the controllability of operations. The overall solution achieves efficient, stable and intelligent pipe cleaning operations under high pressure without relying on additional pressure support for the pipeline, significantly improving the safety, reliability and service life of pipeline maintenance, and reducing energy consumption and leakage risks.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipeline pig, characterized in that: Includes a drainage device (100) and a cleaning device (200) located on the same axis; The drainage device (100) includes a high-pressure nozzle (110), a high-pressure nozzle (120), and a high-pressure hose (130) connected in sequence. The high-pressure nozzle (120) is threadedly connected to the high-pressure hose (130); The high-pressure nozzle (110) is rotatably connected to the high-pressure nozzle (120); The cleaning device (200) includes a drain cleaner (210) and a connecting pipe (220). The connecting pipe (220) and the high-pressure hose (130) are connected by a high-pressure buckle; The drain cleaner (210) is sleeved with the connecting pipe (220).

2. The pigging device according to claim 1, characterized in that: The outer wall of the high-pressure hose (130) is fitted with a straightening spring (150).

3. The pigging device according to claim 2, characterized in that: The drain cleaner (210) includes a blade (211), a support bowl (212), and a retaining ring (213). Multiple limiting rings (213) are stacked and then fitted into the support bowl (212); The multiple blades (211) are arranged in a ring array and are engaged with the outer wall of the support cup (212); The blade (211) and the support bowl (212) are fixedly connected by screws.

4. The pigging device according to claim 3, characterized in that: The connecting tube (220) passes through the blade (211), the support cup (212), and the limiting ring (213) in sequence.

5. The pigging device according to claim 4, characterized in that: The connecting pipe (220) is fitted with at least two of the drain cleaners (210).

6. The pigging device according to claim 5, characterized in that: Spacer rings (230) are provided between the drain cleaners (210).

7. The pigging device according to claim 6, characterized in that: The support bowl (212) is made of an elastic material.

8. The pigging device according to claim 7, characterized in that: The high-pressure nozzle (110) is conical.

9. The pigging device according to claim 8, characterized in that: The support bowl (212) has a conical surface on the side near the drainage device (100).

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