Usage method of a natural gas pipeline cleaning device

Abstract

The invention discloses a usage method of a natural gas pipeline cleaning device, which comprises the following steps: injecting a cleaning agent into the pipeline to be cleaned; sending the natural gas pipeline cleaning device into the pipeline to be cleaned; injecting high-pressure gas into the pipeline to be cleaned to push the natural gas pipeline cleaning device to move in the pipeline; injecting a cleaning agent into the reverse pipeline of the pipeline to be cleaned that has been blocked by the cleaner; sending the natural gas pipeline cleaning device into the reverse pipeline of the pipeline to be cleaned that has been blocked by the cleaner; injecting high-pressure gas into the reverse pipeline of the pipeline to be cleaned that has been blocked by the cleaner to push the natural gas pipeline cleaning device to move in the pipeline. The invention unblocks and releases the stuck state of the blocked pipeline, and avoids unblocking the pipeline by cutting.

Description

Technical Field

[0001] The present invention relates to the technical field of storage and transportation engineering, and particularly relates to a method for using a natural gas pipeline cleaning device. Background Art

[0002] After natural gas is extracted from the ground, it needs to be transported through large-diameter natural gas transmission pipelines. Before transportation, natural gas needs to be processed, including dehydration treatment. The dehydrated natural gas is prone to generating dust impurities in the pipeline, which adhere to the inner wall of the pipeline. The dust impurities increase the transmission resistance of the gas transmission pipeline. To ensure the safe and stable operation of the pipeline, a pigging method is often adopted to remove the dirt in the pipeline. The pig is spherical in shape. The pig is deformed by extrusion and contacts the inner wall of the pipeline. The contact surface is one, and the pipeline can only be scraped off once. For impurities that are difficult to scrape off, it is necessary to repeatedly transport the pig multiple times to achieve cleaning, and the overall cleaning efficiency is low. Summary of the Invention

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a natural gas pipeline cleaning device. This device can achieve multiple scraping of the inner wall of the pipeline in one pass through the pipeline, with high cleaning efficiency, and can unclog and unlock blocked pipelines, avoiding unclogging by cutting the pipeline.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A natural gas pipeline cleaning device includes a cleaning part, and the cleaning part includes,

[0006] A first baffle plate, provided with a number of first through holes circumferentially arrayed around the axis of the first baffle plate;

[0007] A jacket part, coaxially fixed on the first side surface of the first baffle plate;

[0008] A number of scraping plates and a number of isolation plates, sleeved on the jacket part; both the isolation plates and the scraping plates are provided with second through holes matching the first through holes, and the diameter of the isolation plates is smaller than the diameter of the scraping plates;

[0009] A second baffle plate, sleeved on the jacket part; the second baffle plate is provided with third through holes corresponding to the second through holes; the scraping plates and the isolation plates are located between the first baffle plate and the second baffle plate;

[0010] A number of bolts, sequentially passing through the first through holes, the second through holes and the third through holes, and fixing the first baffle plate, the number of scraping plates, the number of isolation plates and the second baffle plate together.

[0011] Further, the first baffle plate contacts the scraping plates; the second baffle plate contacts the isolation plates;

[0012] The diameter of the second baffle plate is smaller than the diameter of the isolation plates;

[0013] The diameter of the first baffle is smaller than that of the second baffle.

[0014] Furthermore, it further includes a connecting part. One end of the connecting part is provided with a cleaning part, and the other end is provided with a second part. The structure of the second part is the same as that of the cleaning part. The second part and the cleaning part are symmetrically arranged on the connecting part in a mirror image manner. The first baffle is fixedly connected to the connecting part.

[0015] Furthermore, a through hole runs through the connecting part.

[0016] A through hole communicating with the through hole is provided on the first baffle.

[0017] An inlet hole communicating with the through hole is provided on the outer sleeve part of the cleaning part.

[0018] A groove hole communicating with the through hole is provided on the outer sleeve part of the second part. A number of spray holes communicating with the groove hole are provided on the outer sleeve part of the second part. The spray holes penetrate through the outer sleeve part of the second part. The axis of the liquid outlet of the spray hole forms an angle with the axis of the outer sleeve part.

[0019] Furthermore, the spray holes include

[0020] A number of flushing holes, which are arranged in a circumferential array around the axis of the groove hole.

[0021] A number of rotating holes, which are arranged in a circumferential array around the axis of the groove hole. The axis of the rotating hole is non-coplanar with the axis of the outer sleeve part.

[0022] Furthermore, a detachable spray nozzle is provided in the spray hole.

[0023] Furthermore, the spray nozzle includes

[0024] A direct injection part, which is internally provided with a direct injection channel. The axis of the direct injection channel is coplanar with the axis of the outer sleeve part.

[0025] A rotating part, which is internally provided with a rotating channel. The axis of the rotating channel is non-coplanar with the axis of the outer sleeve part.

[0026] Furthermore, it further includes a sending component. The sending component includes

[0027] A sending cylinder, the middle of which is communicated with high-pressure gas through a first valve, and the tail can be opened and closed.

[0028] A ball valve, the two ends of which are respectively communicated with the sending end of the sending cylinder and the head end of the pipeline to be cleaned.

[0029] A pressure gauge, which is communicated with the inside of the sending cylinder.

[0030] A pressure relief valve, which is communicated with the inside of the sending cylinder.

[0031] A Venturi tube, the inlet end of which is connected to high-pressure gas through a second valve, and the discharge end of which is connected to the pipeline to be cleaned;

[0032] A check valve, one end of which is connected to the vacuum end of the Venturi tube through a third valve, and the other end of which is connected to a cleaning agent container;

[0033] A fourth valve, both ends of which are respectively connected to high-pressure gas and the pipeline to be cleaned.

[0034] A method for using a natural gas pipeline cleaning device, comprising the following steps;

[0035] Inject a cleaning agent into the pipeline to be cleaned;

[0036] Send the natural gas pipeline cleaning device into the pipeline to be cleaned;

[0037] Inject high-pressure gas into the pipeline to be cleaned to push the natural gas pipeline cleaning device to move in the pipeline.

[0038] A method for using a natural gas pipeline cleaning device, comprising the following steps;

[0039] Inject a cleaning agent into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner;

[0040] Send the natural gas pipeline cleaning device into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner;

[0041] Inject high-pressure gas into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner to push the natural gas pipeline cleaning device to move in the pipeline.

[0042] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0043] A number of scraping plates and a number of isolation plates are fixed by a first baffle and a second baffle, which limits the deformation of the isolation plates and the scraping plates, and the number and arrangement of the scraping plates and the isolation plates can be conveniently adjusted by bolts, and it is convenient to disassemble the scraping plates and the isolation plates for maintenance.

[0044] Each scraping plate forms a scraper to clean the inner wall of the pipeline. Multiple scraping plates mean multiple cleaning, which can achieve a better cleaning purpose.

[0045] Other advantages, objectives and features of the present invention will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings of the present invention are described as follows:

[0047] Figure 1 It is the front view structural schematic diagram of the natural gas pipeline cleaning device in Embodiment 1.

[0048] Figure 2 It is Figure 1 the left view structural schematic diagram of.

[0049] Figure 3 It is Figure 1 the right view structural schematic diagram of.

[0050] Figure 4 It is Figure 3 the enlarged structural schematic diagram at position A in.

[0051] Figure 5 It is Figure 3 the structural schematic diagram at the B-B section in.

[0052] Figure 6 It is Figure 5 the enlarged structural schematic diagram at position C in.

[0053] Figure 7 It is Figure 5 the enlarged structural schematic diagram at position D in.

[0054] Figure 8 It is the structural schematic diagram when the natural gas pipeline cleaning device in Embodiment 1 cleans the pipeline.

[0055] Figure 9 It is the structural schematic diagram when the natural gas pipeline cleaning device in Embodiment 1 unblocks and cleans the pipeline.

[0056] Figure 10 It is the structural schematic diagram of the sending component in Embodiment 1.

[0057] Figure 11 It is the front view structural schematic diagram of the natural gas pipeline cleaning device in Embodiment 2.

[0058] Figure 12 It is Figure 11 the left view structural schematic diagram of.

[0059] Figure 13 It is Figure 11 the right view structural schematic diagram of.

[0060] Figure 14 It is Figure 13 the enlarged structural schematic diagram at position E in.

[0061] Figure 15 It is Figure 13 the structural schematic diagram at the F-F section in.

[0062] Figure 16 It isFigure 15 Schematic diagram of the enlarged structure at position G in

[0063] Figure 17 is Figure 15 Schematic diagram of the enlarged structure at position H in

[0064] Figure 18 Schematic cross-sectional structure diagram of the rotating part in Embodiment 2

[0065] Figure 19 Schematic cross-sectional structure diagram of the direct part in Embodiment 2

[0066] Figure 20 Schematic structure diagram of the natural gas pipeline cleaning device cleaning the pipeline in Embodiment 2

[0067] Figure 21 Schematic structure diagram of the natural gas pipeline cleaning device unclogging and cleaning the pipeline in Embodiment 2

[0068] Figure 22 Schematic structure diagram of the sending component in Embodiment 2

[0069] In the figure: 1. First baffle; 11. First perforation; 12. Through hole; 2. Outer sleeve part; 21. Entrance hole; 3. Scraping plate; 4. Isolation plate; 5. Second perforation; 6. Second baffle; 61. Third perforation; 7. Bolt; 8. Connecting part; 81. Through hole; 9. Second part; 10. Grooved hole; 100. Injection hole; 101. Flushing hole; 102. Rotating hole; 201. Direct part; 2011. Direct channel; 202. Rotating part; 2021. Rotating channel; 301. Sending cylinder; 302. First valve; 303. Ball valve; 304. Pressure gauge; 305. Pressure relief valve; 306. Venturi tube; 307. Second valve; 308. Check valve; 309. Third valve; 401. Fourth valve; 500. High-pressure gas; 600. Cleaner; 700. Pipeline to be cleaned; 800. Cleaning agent. Detailed implementation manners

[0070] The present invention will be further described below with reference to the accompanying drawings and embodiments. Embodiment

[0071] As Figures 1 to 10 shown, a natural gas pipeline cleaning device includes a cleaning part, and the cleaning part includes

[0072] a first baffle 1, provided with a plurality of first perforations 11 arranged in a circumferential array around the axis of the first baffle 1;

[0073] an outer sleeve part 2, coaxially and fixedly connected to the first side surface of the first baffle 1;

[0074] A number of scraping plates 3 and a number of spacer plates 4 are sleeved on the outer sleeve part 2; second through holes 5 matching the first through hole 11 are provided on both the spacer plate 4 and the scraping plate 3, and the diameter of the spacer plate 4 is smaller than that of the scraping plate 3; the scraping plate 3 and the spacer plate 4 are made of a material with a certain deformation ability, such as rubber. At the same time, the number and spacing mode of the scraping plate 3 and the spacer plate 4 can be adjusted according to the actual situation;

[0075] The spacer plate 4 supports the scraping plate 3. At the same time, a gap is formed between the spacer plate 4 and the scraping plate 3, which can accommodate a small amount of impurities. In this way, when the scraping plate 3 at the front does not scrape the impurities from the inner wall of the pipeline, but when a certain scraping plate 3 behind it scrapes the impurities, the impurities will be accommodated between the scraping plate 3 and the spacer plate 4 and will not continue to squeeze the subsequent scraping plates 3, so that the subsequent scraping plates 3 can be in seamless contact with the inner wall of the pipeline to continue scraping the impurities on the inner wall of the pipeline;

[0076] A second baffle 6 is sleeved on the outer sleeve part 2; a third through hole 61 corresponding to the second through hole 5 is provided on the second baffle 6; the scraping plate 3 and the spacer plate 4 are located between the first baffle 1 and the second baffle 6;

[0077] A number of bolts 7 pass through the first through hole 11, the second through hole 5 and the third through hole 61 in sequence to fixedly connect the first baffle 1, a number of scraping plates 3, a number of spacer plates 4 and the second baffle 6 together.

[0078] Setting a number of scraping plates 3 and a number of spacer plates 4 fixed by the first baffle 1 and the second baffle 6 restricts the deformation of the spacer plate 4 and the scraping plate 3. And through the bolts 7, it is convenient to adjust the number and arrangement mode of the scraping plates 3 and the spacer plates 4, and it is also convenient to disassemble the scraping plates 3 and the spacer plates 4 for maintenance.

[0079] Each scraping plate 3 forms a scraper to clean the inner wall of the pipeline. Multiple scraping plates 3, that is, multiple cleanings, can achieve a better cleaning purpose.

[0080] In this embodiment, the first baffle 1 is in contact with the scraping plate 3; the second baffle 6 is in contact with the spacer plate 4;

[0081] The diameter of the second baffle 6 is smaller than that of the spacer plate 4;

[0082] The diameter of the first baffle 1 is smaller than that of the second baffle 6.

[0083] The second baffle 6, the spacer plate 4 and the scraping plate 3 are arranged in sequence, which can form a structure similar to a conical tip, which can guide the device to move in the pipeline, improve the cleaning efficiency, and is not easy to get stuck.

[0084] The diameter of the first baffle 1 is smaller than that of the second baffle 6, so that the scraping plate 3 or the isolation plate 4 in contact with the second baffle 6 has a greater bending deformation ability in the direction of the first baffle 1. Therefore, when encountering impurities that cannot be scraped off, the scraping plate 3 can deform smoothly instead of rubbing hard against the impurities, damaging the edge of the scraping plate 3 and causing the scraping plate 3 to be unable to fit seamlessly with the inner wall of the pipeline.

[0085] In this embodiment, it further includes a connecting portion 8. One end of the connecting portion 8 is provided with a cleaning portion, and the other end is provided with a second portion 9; the structure of the second portion 9 is the same as that of the cleaning portion, and the second portion 9 and the cleaning portion are arranged symmetrically with respect to the connecting portion 8 in a mirror image; the first baffle 1 is fixedly connected to the connecting portion 8.

[0086] The cleaning portion, the second portion 9 and the connecting portion 8 together form a structure with multiple cleaning capabilities and an outer contour approximately similar to that of a circular pipe, which can not only improve the cleaning ability but also ensure the stability of the device when moving inside the pipeline, that is, the axis of the scraping plate 3 is always parallel to the axis of the pipeline, so that the scraping plate 3 can directly press and impact the inner wall of the pipeline.

[0087] In this embodiment, a through hole 81 is provided inside the connecting portion 8;

[0088] A through hole 12 communicating with the through hole 81 is provided on the first baffle 1;

[0089] An inlet hole 21 communicating with the through hole 12 is provided on the outer sleeve portion 2 of the cleaning portion;

[0090] A groove hole 10 communicating with the through hole 81 is provided on the outer sleeve portion 2 of the second portion 9, and a plurality of spray holes 100 communicating with the groove hole 10 are provided on the outer sleeve portion 2 of the second portion 9; the spray holes 100 and the groove hole 10 penetrate through the outer sleeve portion 2 of the second portion 9; the axis of the liquid outlet of the spray hole 100 forms an angle with the axis of the outer sleeve portion 2.

[0091] When the water content of the impurities inside the pipeline is relatively low, the device is likely to cause the impurities to accumulate in front of the device when moving inside the pipeline, resulting in the device being blocked inside the pipeline. At this time, the high-pressure gas 500 behind the device can be guided to the front of the device through the inlet hole 21, the through hole 12, the through hole 81, the groove hole 10 and the spray holes 100 in sequence to disperse the impurities accumulated in front of the device and prevent the device from being blocked inside the pipeline.

[0092] In this embodiment, the spray holes 100 include,

[0093] A number of flushing holes 101, which are arranged in a circumferential array around the axis of the groove hole 10;

[0094] A plurality of rotating holes 102 are arranged in a circumferential array around the axis of the groove hole 10, and the axes of the rotating holes 102 are non-coplanar with the axis of the outer sleeve portion 2.

[0095] The scraping plate 3 moves in the pipeline, and its edge inevitably rubs and moves against the impurities on the inner wall of the pipeline. If the scraping plate 3 is damaged during the friction with the impurities, such as having a notch, etc., at this time, the impurities on the inner wall of the pipeline cannot be completely scraped off at the notch. However, through the rotating holes 102, the air pressure behind the device is converted into the force to drive the device to rotate, so that the device moves forward in the pipeline and rotates by itself, enabling the undamaged scraping plate 3 to achieve comprehensive scraping through the area of the notch on the scraping plate 3.

[0096] In this embodiment, it further includes a sending component, and the sending component includes

[0097] A sending cylinder 301, the middle of which is communicated with the high-pressure gas 500 through a first valve 302, and the tail is openable and closable;

[0098] A ball valve 303, with both ends respectively communicated with the sending end of the sending cylinder 301 and the head end of the pipeline 700 to be cleaned;

[0099] A pressure gauge 304, which is communicated with the inside of the sending cylinder 301;

[0100] A pressure relief valve 305, which is communicated with the inside of the sending cylinder 301;

[0101] A Venturi tube 306, the inlet end of which is communicated with the high-pressure gas 500 through a second valve 307, and the discharge port end is communicated with the pipeline to be cleaned;

[0102] A check valve 308, which is communicated with the vacuum end of the Venturi tube 306 through a third valve 309;

[0103] A fourth valve 401, with both ends respectively communicated with the high-pressure gas 500 and the pipeline to be cleaned.

[0104] The Venturi tube 306 is used to connect the high-pressure gas 500 and the pipeline to be cleaned. Using the high-pressure gas 500 as the power, the cleaning agent 800 communicated with the check valve 308 is sucked in and then discharged into the pipeline to be cleaned. The whole process does not require the use of a filling pump and does not require a power supply, has strong environmental adaptability, and can be continuously and controllably filled during the cleaning process, providing convenience for various cleaning methods, such as multiple cleaners 600 being arranged at intervals for multiple cleanings.

[0105] This embodiment cleans the pipeline to be cleaned as follows:

[0106] Close the first valve 302, the second valve 307, and the fourth valve 401.

[0107] Connect the cleaner 800 container to the check valve 308.

[0108] Open the second valve 307 and the third valve 309. The cleaner 800 flows through the check valve 308 and the third valve 309 under the flow of the high-pressure gas 500 and enters the pipeline to be cleaned; after a certain amount of the cleaner 800 is injected into the pipeline to be cleaned, close the second valve 307 and the third valve 309.

[0109] Send the natural gas pipeline cleaning device into the sending cylinder 301, place it in front of the ball valve 303, and then seal the sending cylinder 301.

[0110] Open the first valve 302. The inside of the sending cylinder 301 is pressurized. After reaching a certain pressure, open the ball valve 303. Under the action of the pressure, the natural gas pipeline cleaning device enters the pipeline to be cleaned.

[0111] Open the fourth valve 401 and close the first valve 302. The high-pressure gas 500 continuously enters the pipeline 700 to be cleaned. The gas pushes the natural gas pipeline cleaning device to move in the pipeline 700 to be cleaned, realizing the cleaning of the inner wall of the pipeline.

[0112] At the same time, part of the high-pressure gas 500 sequentially passes through the inlet hole 21, the through hole 12, the through hole 81, the groove hole 10, and the flushing hole 101 and the rotating hole 102 to direct the high-pressure gas 500 to the inner wall of the pipeline in front of the natural gas pipeline cleaning device, blowing the dry dirt attached to the inner wall of the pipeline, and combining with the previously added cleaner 800 to stir, dilute, and degrade into a liquid state, greatly reducing the operating resistance of the natural gas pipeline cleaning device. At the same time, when the rotating hole 102 ejects the high-pressure gas 500, a torque is applied to the natural gas pipeline cleaning device, causing the natural gas pipeline cleaning device to rotate in the pipeline to be cleaned.

[0113] If the cleaner content is insufficient during the cleaning process, open the second valve 307 and the third valve 309 again. The high-pressure gas transports the cleaner 800 into the pipeline 700 to be cleaned, and then sprays it through the injection hole 100 of the natural gas pipeline cleaning device to the front of the natural gas pipeline cleaning device 700 to be mixed with the dry dust dirt.

[0114] Blow, clean, stir, degrade, dilute the dry dust dirt along the way of the natural gas pipeline cleaning device, and push the mixed liquid dirt into the cylinder body of the receiving ball cylinder of the downstream receiving ball station of the gas transmission pipeline.

[0115] If the cleaner 600 is stuck in the pipeline during pipeline cleaning, at this time, use the natural gas pipeline cleaning device to enter the pipeline 700 to be cleaned from the tail of the pipeline 700 to be cleaned. The entry operation is the same as the steps for normally cleaning the pipeline 700 to be cleaned using the natural gas pipeline cleaning device.

[0116] The natural gas pipeline cleaning device moves under the action of high-pressure gas 500. The powerful jet airflows ejected from the jet holes 100 and the rotating holes 102 decompose the plunger-shaped dry dirt and agitate the cleaner 800 to degrade and dilute the dry dirt into a liquid state, thereby eliminating the blockage, reducing the frictional resistance between the cleaner 600 and the inner wall of the pipeline, enabling the blocked pig to run backward normally, and thus realizing "unclogging and unjamming". Embodiment

[0117] As Figures 11 to 22 shown, a natural gas pipeline cleaning device includes a cleaning part, and the cleaning part includes,

[0118] The first baffle 1 is provided with a plurality of first through holes 11 arranged in a circumferential array around the axis of the first baffle 1;

[0119] The outer sleeve part 2 is coaxially fixedly connected to the first side surface of the first baffle 1;

[0120] A plurality of scraping plates 3 and a plurality of isolating plates 4 are sleeved on the outer sleeve part 2; the isolating plates 4 and the scraping plates 3 are both provided with second through holes 5 matching the first through holes 11, and the diameter of the isolating plates 4 is smaller than that of the scraping plates 3; the scraping plates 3 and the isolating plates 4 are made of a material with a certain deformation ability, such as rubber. At the same time, the number and spacing mode of the scraping plates 3 and the isolating plates 4 can be adjusted according to the actual situation;

[0121] The isolating plates 4 support the scraping plates 3. At the same time, a gap is formed between the isolating plates 4 and the scraping plates 3, which can accommodate a certain amount of impurities in a small amount. In this way, when the frontmost scraping plate 3 does not scrape the impurities from the inside of the pipeline, but after a certain scraping plate 3 behind it scrapes the impurities, the impurities will be accommodated between the scraping plates 3 and the isolating plates 4 and will not continue to squeeze the subsequent scraping plates 3, so that the subsequent scraping plates 3 can be in seamless contact with the inner wall of the pipeline to continue scraping the impurities on the inner wall of the pipeline;

[0122] The second baffle 6 is sleeved on the outer sleeve part 2; the second baffle 6 is provided with third through holes 61 corresponding to the second through holes 5; the scraping plates 3 and the isolating plates 4 are located between the first baffle 1 and the second baffle 6;

[0123] A plurality of bolts 7 sequentially pass through the first through holes 11, the second through holes 5 and the third through holes 61 to fixedly connect the first baffle 1, the plurality of scraping plates 3, the plurality of isolating plates 4 and the second baffle 6 together.

[0124] It is set that a plurality of scraping plates 3 and a plurality of isolating plates 4 are fixed by the first baffle 1 and the second baffle 6 to limit the deformation of the isolating plates 4 and the scraping plates 3. Moreover, the number and arrangement mode of the scraping plates 3 and the isolating plates 4 can be conveniently adjusted through the bolts 7, and it is convenient to disassemble the scraping plates 3 and the isolating plates 4 for maintenance.

[0125] Each scraping plate 3 forms a scraping blade to clean the inner wall of the pipeline. Multiple scraping plates 3, i.e., multiple cleanings, can achieve a better cleaning purpose.

[0126] In this embodiment, the first baffle 1 is in contact with the scraping plate 3; the second baffle 6 is in contact with the isolation plate 4;

[0127] The diameter of the second baffle 6 is smaller than the diameter of the isolation plate 4;

[0128] The diameter of the first baffle 1 is smaller than the diameter of the second baffle 6.

[0129] The second baffle 6, the isolation plate 4 and the scraping plate 3 are arranged in sequence, which can form a structure similar to the tip of a cone, which can guide the device to move in the pipeline, improve the cleaning efficiency, and is not easy to get stuck.

[0130] The diameter of the first baffle 1 is smaller than that of the second baffle 6, so that the scraping plate 3 or the isolation plate 4 in contact with the second baffle 6 has a greater bending deformation ability in the direction of the first baffle 1. Thus, when encountering impurities that cannot be scraped off, the scraping plate 3 can deform smoothly instead of rubbing hard against the impurities, damaging the edge of the scraping plate 3 and causing the scraping plate 3 to not fit seamlessly with the inner wall of the pipeline.

[0131] In this embodiment, it further includes a connecting portion 8. One end of the connecting portion 8 is provided with a cleaning portion, and the other end is provided with a second portion 9; the structure of the second portion 9 is the same as that of the cleaning portion, and the second portion 9 and the cleaning portion are symmetrically arranged on the connecting portion 8 in a mirror image; the first baffle 1 is fixedly connected to the connecting portion 8.

[0132] The cleaning portion, the second portion 9 and the connecting portion 8 form a structure with multiple cleaning capabilities and an outer contour approximately regarded as a circular pipe, which can not only improve the cleaning ability but also ensure the stability of the device when moving inside the pipeline, that is, the axis of the scraping plate 3 is always parallel to the axis of the pipeline, so that the scraping plate 3 can directly press against and impact the inner wall of the pipeline.

[0133] In this embodiment, a through hole 81 runs through the connecting portion 8;

[0134] A through hole 12 communicating with the through hole 81 is provided on the first baffle 1;

[0135] An inlet hole 21 communicating with the through hole 12 is provided on the outer sleeve portion 2 of the cleaning portion;

[0136] A groove hole 10 communicating with the through hole 81 is provided on the outer sleeve portion 2 of the second part 9, and a plurality of injection holes 100 communicating with the groove hole 10 are provided on the outer sleeve portion 2 of the second part 9; the injection holes 100 and the groove hole 10 penetrate through the outer sleeve portion 2 of the second part 9; the axis of the liquid outlet of the injection hole 100 forms an angle with the axis of the outer sleeve portion 2.

[0137] The water content of impurities inside the pipeline is relatively low. When the device moves inside the pipeline, it is easy for impurities to accumulate in front of the device, resulting in the blockage of the device inside the pipeline. At this time, the high-pressure gas 500 behind the device can be guided to the front of the device through the inlet hole 21, the through hole 12, the through hole 81, the groove hole 10, and the injection hole 100 in sequence, so as to disperse the impurities accumulated in front of the device and prevent the device from being blocked inside the pipeline.

[0138] In this embodiment, a detachable injection nozzle is provided inside the injection hole 100.

[0139] The injection nozzle with a suitable caliber can be selected according to the actual situation to meet the requirements of injecting high-pressure gas 500.

[0140] In this embodiment, the injection nozzle includes

[0141] A direct injection part 201 with a direct injection channel 2011 inside, and the axis of the direct injection channel 2011 is coplanar with the axis of the outer sleeve portion 2;

[0142] A rotating part 202 with a rotating channel 2021 inside, and the axis of the rotating channel 2021 is non-coplanar with the axis of the outer sleeve portion 2.

[0143] The scraping plate 3 moves inside the pipeline, and its edge inevitably rubs and moves against the impurities on the inner wall of the pipeline. If the scraping plate 3 is damaged during the friction with the impurities, such as having a notch, etc., the impurities on the inner wall of the pipeline cannot be completely scraped off at the notch at this time. However, through rotation, the air flow pressure behind the device is converted into the force to drive the rotation of the device, so that the device moves forward inside the pipeline and rotates by itself, enabling the undamaged scraping plate 3 to completely scrape off the area passing through the notch on the scraping plate 3.

[0144] If the positions and angles of the injection holes 100 are determined, and the coaxial hole rotating part 202 and direct injection part 201 are used, the air flow injection angle will be fixed. However, the direct injection part 201 and rotating part 202 with offset holes can be selected, as shown in Figure 18 and Figure 19 shown, so as to achieve the purpose of guiding the high-pressure air flow to impact the accumulated impurities at different angles and applying a certain torque to the device.

[0145] In this embodiment, a sending component is further included, and the sending component includes

[0146] The sending cylinder 301 is connected to the high-pressure gas 500 through a first valve 302 in the middle, and the tail is openable and closable;

[0147] The ball valve 303 has two ends respectively connected to the sending end of the sending cylinder 301 and the head end of the pipeline 700 to be cleaned;

[0148] The pressure gauge 304 is connected to the inside of the sending cylinder 301;

[0149] The pressure relief valve 305 is connected to the inside of the sending cylinder 301;

[0150] The Venturi tube 306 has its inlet end connected to the high-pressure gas 500 through a second valve 307, and its discharge end is connected to the pipeline to be cleaned;

[0151] The check valve 308 is connected to the vacuum end of the Venturi tube 306 through a third valve 309;

[0152] The fourth valve 401 has two ends respectively connected to the high-pressure gas 500 and the pipeline to be cleaned.

[0153] The Venturi tube 306 is used to connect the high-pressure gas 500 and the pipeline to be cleaned. Using the high-pressure gas 500 as the power, the cleaning agent 800 connected to the check valve 308 is sucked in and then discharged into the pipeline to be cleaned. The whole process does not require the use of a filling pump and does not require a power supply, has strong environmental adaptability, and during the cleaning process, continuous and controllable filling can be carried out, providing convenience for various cleaning methods, such as multiple cleaners 600 being arranged at intervals for multiple cleanings.

[0154] The pipeline to be cleaned is cleaned in this embodiment as follows:

[0155] According to the impurity content and adhesion condition in the pipeline 700 to be cleaned, the rotating part 202 and the direct injection part 201 with appropriate inclination angles and inner diameters are selected and installed on the natural gas pipeline cleaning device.

[0156] Then close the first valve 302, the second valve 307, and the fourth valve 401.

[0157] Connect the cleaning agent 800 container to the check valve 308.

[0158] Open the second valve 307 and the third valve 309. The cleaning agent 800 flows through the check valve 308 and the third valve 309 into the pipeline to be cleaned under the flow of the high-pressure gas 500; after a certain amount of the cleaning agent 800 is injected into the pipeline to be cleaned, close the second valve 307 and the third valve 309.

[0159] Send the natural gas pipeline cleaning device into the sending cylinder 301, place it in front of the ball valve 303, and then seal the sending cylinder 301.

[0160] Open the first valve 302. The inside of the sending cylinder 301 is pressurized. After reaching a certain pressure, open the ball valve 303. Under the action of the pressure, the natural gas pipeline cleaning device enters the pipeline to be cleaned.

[0161] Open the fourth valve 401 and close the first valve 302. The high-pressure gas 500 continuously enters the pipeline 700 to be cleaned. The gas pushes the natural gas pipeline cleaning device to move in the pipeline 700 to be cleaned, realizing the cleaning of the inner wall of the pipeline.

[0162] At the same time, part of the high-pressure gas 500 sequentially passes through the inlet hole 21, the through hole 12, the through hole 81, the groove hole 10, and the direct injection part 201 and the rotating part 202 to direct the high-pressure gas 500 towards the inner wall of the pipeline in front of the natural gas pipeline cleaning device, blowing the dry dirt attached to the inner wall of the pipeline, and combining with the previously added cleaning agent 800 to stir, dilute, and degrade it into a liquid state, greatly reducing the operating resistance of the natural gas pipeline cleaning device. At the same time, when the rotating part 202 ejects the high-pressure gas 500, a torque is applied to the natural gas pipeline cleaning device, causing the natural gas pipeline cleaning device to rotate in the pipeline to be cleaned.

[0163] If the content of the cleaning agent is insufficient during the cleaning process, then open the second valve 307 and the third valve 309. The high-pressure gas transports the cleaning agent 800 into the pipeline 700 to be cleaned, and then sprays it through the injection hole 100 of the natural gas pipeline cleaning device in front of the natural gas pipeline cleaning device 700 to be mixed with the dry dust dirt.

[0164] Along the way, the natural gas pipeline cleaning device blows and cleans, stirs and degrades, dilutes the dry dust dirt, and pushes the mixed liquid dirt into the cylinder body of the pig receiver at the downstream of the gas transmission pipeline.

[0165] If the cleaner 600 is stuck in the pipeline during pipeline cleaning, at this time, use the natural gas pipeline cleaning device to enter the pipeline 700 to be cleaned from the tail of the pipeline 700 to be cleaned. The entry operation is the same as the steps for the natural gas pipeline cleaning device to normally clean the pipeline 700 to be cleaned. Specifically, all rotating parts 202 can be installed in the injection hole 100 to fully stir the plunger-shaped dry dirt and improve the efficiency of unblocking.

[0166] The natural gas pipeline cleaning device moves under the action of the high-pressure gas 500. The powerful jet airflow ejected by the injection part 201 and the rotating part 202 decomposes the plunger-shaped dry dirt and stirs the cleaning agent 800 to degrade and dilute the dry dirt into a liquid state, thereby eliminating the blockage, reducing the frictional resistance between the cleaner 600 and the inner wall of the pipeline, enabling the stuck pig to run normally in the reverse direction, and thus realizing "unblocking and unjamming".

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the present technical solution, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A method for using a natural gas pipeline cleaning device, characterized in that Including the following steps: Inject a cleaning agent into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner; Send the natural gas pipeline cleaning device into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner; Inject high-pressure gas into the reverse pipeline of the pipeline to be cleaned that has been blocked by a cleaner to push the natural gas pipeline cleaning device to move inside the pipeline; The following natural gas pipeline cleaning device is used, including a cleaning part, and the cleaning part includes: A first baffle plate, provided with a number of first through holes arranged in a circumferential array around the axis of the first baffle plate; An outer sleeve part, coaxially fixedly connected to the first side surface of the first baffle plate; A number of scraping plates and a number of partition plates, sleeved on the outer sleeve part; the partition plates and the scraping plates are both provided with second through holes matching the first through holes, and the diameter of the partition plates is smaller than the diameter of the scraping plates; A second baffle plate, sleeved on the outer sleeve part; the second baffle plate is provided with third through holes corresponding to the second through holes; the scraping plates and the partition plates are located between the first baffle plate and the second baffle plate; A number of bolts, sequentially passing through the first through holes, the second through holes and the third through holes to fixedly connect the first baffle plate, a number of scraping plates, a number of partition plates and the second baffle plate together; A connecting part, one end of the connecting part is provided with a cleaning part, and the other end is provided with a second part; the structure of the second part is the same as the structure of the cleaning part, and the second part and the cleaning part are symmetrically arranged on the connecting part in a mirror image; the first baffle plate is fixedly connected to the connecting part; A through hole is provided inside the connecting part; A through hole communicating with the through hole is provided on the first baffle plate; An inlet hole communicating with the through hole is provided on the outer sleeve part of the cleaning part; A groove hole communicating with the through hole is provided on the outer sleeve part of the second part, and a number of injection holes communicating with the groove hole are provided on the outer sleeve part of the second part; the injection holes penetrate through the outer sleeve part of the second part; the axis of the liquid outlet of the injection hole forms an angle with the axis of the outer sleeve part; The injection hole includes: A number of flushing holes, arranged in a circumferential array around the axis of the groove hole; A number of rotating holes, arranged in a circumferential array around the axis of the groove hole, and the axis of the rotating hole is non-coplanar with the axis of the outer sleeve part; A sending component, and the sending component includes, A sending cylinder, the middle part is communicated with high-pressure gas through a first valve, and the tail part can be opened and closed; A ball valve, the two ends are respectively communicated with the sending end of the sending cylinder and the head end of the pipeline to be cleaned; A pressure gauge, communicated with the inside of the sending cylinder; A pressure relief valve, communicated with the inside of the sending cylinder; A Venturi tube, the inlet end is communicated with high-pressure gas through a second valve, and the discharge port end is communicated with the pipeline to be cleaned; A check valve, one end is communicated with the vacuum end of the Venturi tube through a third valve; the other end is communicated with the cleaning agent container; A fourth valve, the two ends are respectively communicated with high-pressure gas and the pipeline to be cleaned.

2. The usage method of the natural gas pipeline cleaning device according to claim 1, characterized in that, The first baffle plate is in contact with the scraping plate; the second baffle plate is in contact with the partition plate; The diameter of the second baffle plate is smaller than the diameter of the partition plate; The diameter of the first baffle plate is smaller than the diameter of the second baffle plate.

3. The method of using the natural gas pipeline cleaning device according to claim 1, characterized in that, A detachable injection nozzle is provided inside the injection hole.

4. The method of using the natural gas pipeline cleaning device according to claim 3, characterized in that, The injection nozzle includes, A direct injection part, internally provided with a direct injection channel, and the axis of the direct injection channel is coplanar with the axis of the outer sleeve part; A rotating part, internally provided with a rotating channel, and the axis of the rotating channel is non-coplanar with the axis of the outer sleeve part.

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