Oil cleaning method for multi-cabin multi-pipeline cabin

Abstract

The invention relates to an oil cleaning method for a multi-cabin multi-pipeline cabin, belongs to the technical field of cleaning, and solves the problems that in the prior art, a cabin with a built-in complex pipeline is difficult to clean, and a large number of redundant substances are left. The method comprises the following steps: step 1, cleaning preparation; step 2, sub-cabin cleaning and whole-cabin cleaning; step 3, cleaning and checking the cabin body; 4, the pipeline of the cabin to be cleaned is cleaned; 5, the pipeline of the cabin to be cleaned is cleaned and checked; and 6, cleaning is completed. By means of the cleaning device, the large-size multi-cabin component with the built-in complex pipeline can be cleaned thoroughly, redundant materials are few in residue, and the cleaning efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of cleaning technology, and in particular to an oil cleaning method for a multi-chamber and multi-pipeline cabin. Background Art

[0002] With the development of the integrated design of aerospace product structure and function, the internal structure design of cabin tanks is becoming more and more complex, and more and more closed multi-cavity structures and built-in complex pipeline structures are used. At the same time, the requirements for the control of excess matter inside the cabin are also getting higher and higher. Due to the large size and complex structure of the cabin, the cabin compartment and multi-grid structure and complex pipeline structure inside the cabin lead to the problem of cleaning dead corners during the cleaning process. It is difficult to clean with conventional cleaning methods, and there are many excess residues. Summary of the invention

[0003] In view of the above analysis, an embodiment of the present invention aims to provide an oil cleaning method for a multi-chamber and multi-pipeline cabin, so as to solve the problem that a cabin with complex built-in pipelines is difficult to clean and has a lot of excess residue.

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

[0005] An oil cleaning method for a multi-chamber multi-pipeline cabin comprises the following steps:

[0006] Step 1: Cleaning and preparation;

[0007] Step 2: Cleaning of compartments and the entire compartment;

[0008] Step 3: Cabin cleaning and inspection;

[0009] Step 4: Clean the pipelines of the cabin to be cleaned;

[0010] Step 5: Clean and inspect the pipelines of the cabin to be cleaned;

[0011] Step 6: Cleaning is complete.

[0012] Furthermore, the step 1 comprises the following steps:

[0013] Step 1.1: Fix the cabin to be cleaned on the tooling;

[0014] Step 1.2: The cleaning oil in the oil storage tank of the oil filling equipment is self-circulating and filtered;

[0015] Step 1.3: Connect the oil filling equipment to the tank to be cleaned through pipes;

[0016] Step 1.4: Fill the entire tank with oil.

[0017] Furthermore, the steps before the sub-cabin cleaning and the whole-cabin cleaning in step 2 are:

[0018] When the oil level in the cabin reaches 80%, the cleaning oil inside the cabin is returned for cleaning;

[0019] The front and rear cabins are provided with cleaning oil filling ports and cleaning oil return ports to form an oil circuit circulation, through which the excess materials in the cabin are taken out;

[0020] The oil pipe of the oil return port is connected to the filtering device so that the oil discharged from the oil return port can be re-injected into the oil storage tank of the oil injection equipment for recycling after filtering.

[0021] Furthermore, the specific implementation methods of the sub-cabin cleaning and the whole-cabin cleaning in step 2 are as follows:

[0022] When cleaning the compartments separately, the front and rear compartments are filled with cleaning oil and the oil is returned. The oil filling port and the oil return port form an oil circuit cycle. Repeat the above steps repeatedly.

[0023] During the cleaning process of the sub-cabin cleaning, the pressure in the cabin is ensured not to exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 19-25L / min;

[0024] When cleaning the entire cabin, add oil to the rear end plugging port, return oil to the oil return port of the front cabin cleaning port and the oil return port of the rear cabin cleaning port; repeat the above steps repeatedly;

[0025] During the cleaning process of the entire tank, it is ensured that the pressure inside the tank does not exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 23-30L / min.

[0026] Furthermore, the step 3 comprises:

[0027] The oil discharged from the sub-tank cleaning and the whole tank cleaning return oil is measured with a particle analyzer. The discharge oil particle size meets ≥NAS7 level and the number of excess materials on the tooling filter after oil return is observed to be less than 10.

[0028] Furthermore, the step 4 specifically includes:

[0029] The cleaning oil enters from the low pipe mouth of the fourth pipeline, enters the rear end frame after flowing through the fourth pipeline, fills the rear end frame, enters the skin, flows out from the skin into the middle end frame, enters the third pipeline and the front cabin from the pipe mouth of the third pipeline of the middle end frame, enters the second pipeline from the high pipe mouth of the second pipeline after filling the front cabin, and finally flows out from the low pipe mouth of the first pipeline to the rear cabin.

[0030] Furthermore, the cabin to be cleaned includes a front cabin, a rear cabin, a middle end frame, and a rear end frame;

[0031] The front cabin has two front cabin cleaning ports; the two front cabin cleaning ports are used for filling oil and returning oil when cleaning the front cabin;

[0032] The rear cabin has two rear cabin cleaning ports; the two rear cabin cleaning ports are respectively used for filling oil and returning oil when cleaning the rear cabin.

[0033] Further, the pipeline includes a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a sixth pipeline;

[0034] The third pipeline is arranged in the front cabin; the second pipeline runs through the middle end frame, one end of the second pipeline is arranged in the front cabin, and the other end is arranged in the rear cabin; the first pipeline, the fourth pipeline, the fifth pipeline, and the sixth pipeline are arranged in the rear cabin.

[0035] Furthermore, the pressure condition for oil filling in the cabin in step 1.4 is:

[0036] The pressure inside the cabin is not more than 0.05Mpa.

[0037] Furthermore, an oil cleaning device with multiple compartments and multiple oil circuits is adopted.

[0038] Furthermore, the step 2 also includes:

[0039] Use the oscillation mechanism to oscillate the chamber during the cleaning process.

[0040] Furthermore, the specific manner of the swing is:

[0041] The cabin is fixed on the top of the frame; the swing mechanism is respectively arranged on both sides of the bottom of the frame; the swing mechanism includes a motor and an eccentric shaft; the end of the eccentric shaft is connected to the outermost upper frame of the frame;

[0042] Driven by the motor and the eccentric shaft, the frame swings left and right, and the tooling and cabin swing accordingly; the swing angle is ±15°.

[0043] Furthermore, the step 2 also includes: filling with compressed gas during the cleaning process.

[0044] Furthermore, the compressed gas includes 10% of liquid nitrogen.

[0045] Furthermore, the compressed gas and liquid nitrogen are injected as follows:

[0046] During the cleaning process, a mixed gas of compressed gas and liquid nitrogen is filled into the pipe opening of the rear end frame of the fifth pipeline.

[0047] Furthermore, the filling pressure of the liquid nitrogen is: 0.16MPa-0.20MPa for sub-cabin cleaning; 0.18MPa-0.22MPa for whole-cabin cleaning.

[0048] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0049] (1) The present invention utilizes the inherent pipelines in the cabin and adopts two methods, cabin cleaning and pipeline cleaning, to clean the cabin with multiple cabin sections and multiple pipelines. This solves the problem that multiple cabin sections and multiple pipelines lead to partial cabin cleaning failure during oil cleaning, and the cabin is difficult to clean and has a lot of excess residue using conventional cleaning methods, thereby improving the cleaning efficiency and cleaning quality.

[0050] (2) The present invention forms an oil circuit between the oil filling port and the oil return port to carry out cleaning by removing excess materials; the return oil is discharged by filtering it to the standard and then injected into the cabin of the oil filling equipment for multiple recycling, thereby saving energy and reducing emissions.

[0051] (3) Compared with the prior art, the present invention is provided with a swing mechanism of a motor and an eccentric shaft, and the ends of the eccentric shaft are arranged on the two outermost upper frames of the frame. When the motor rotates, the eccentric shaft rotates, driving the frame and the cabin body to swing left and right, so that the cleaning oil in the cabin body shakes to collide with the cabin body wall and the pipe wall, and the excess materials adhering to the wall and the pipe wall are washed off by the cleaning oil, and the excess materials are taken out when the oil is returned, so that the cleaning of the cabin body is more thorough.

[0052] (4) Compared with the prior art, the present invention fills compressed gas into the cabin during the cleaning process. After the compressed gas enters the cabin, it generates airflow, which drives the cleaning oil to flow more quickly in the cabin and the piping system, forming a vortex, so that the cleaning oil can reach some cleaning dead corners, and can better flush various parts of the cabin, especially flushing away impurities, oil stains and other pollutants attached to it, thereby improving the cleaning quality and efficiency.

[0053] (5) Compared with the prior art, the present invention fills liquid nitrogen into the cabin during the cleaning process. The liquid nitrogen enters the cabin and vaporizes, causing the oil to boil and hit the tube wall and inner wall of the cabin, thereby circulating aluminum chips, dust and other excess materials out of the cleaning oil, thereby enhancing the cleaning effect.

[0054] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The drawings are only for the purpose of illustrating specific embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0056] Figure 1 It is a schematic flow chart of a cleaning method of a specific embodiment;

[0057] Figure 2It is a structural schematic diagram of a tooling of a specific embodiment;

[0058] Figure 3 It is a schematic diagram of the internal piping structure of the cabin in a specific embodiment;

[0059] Figure 4 It is a schematic diagram of the cabin cleaning port and pipe port structure of a specific embodiment.

[0060] Reference numerals:

[0061] 1-cabin body, 11-front cabin, 111-front cabin cleaning port, 12-rear cabin, 121-rear cabin cleaning port, 13-middle end frame, 14-rear end frame, 15-skin, 16-pipeline, 161-first pipeline, 162-second pipeline, 163-third pipeline, 164-fourth pipeline, 1641-fourth pipeline low pipe mouth, 165-fifth pipeline, 1651-fifth pipeline mouth, 166-sixth pipeline, 1661-sixth pipeline low pipe mouth, 1662-sixth pipeline high pipe mouth, 2-bracket, 21-tooling, 22-frame, 23-swing mechanism. DETAILED DESCRIPTION

[0062] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0063] A specific embodiment of the present invention discloses an oil cleaning method for a multi-compartment multi-pipeline cabin, such as Figure 1 As shown, the following steps are included:

[0064] Step 1: Cleaning and preparation;

[0065] Step 1.1: Fix the cabin 1 to the tooling 21;

[0066] like Figure 2 As shown, the support 2 includes a tool 21 and a frame 22. The tool 21 is used to fix the cabin 1, and the frame 22 is placed under the tool 21.

[0067] The number of tooling 21 is set according to the length of the cabin 1. In this embodiment, there are two cabins 1, and the number of tooling 21 is three.

[0068] The tooling 21 in this embodiment is a clamping ring structure, and tooling 21 with different clamping ring heights is selected according to the height of the lower supporting surface of the cabin body 1.

[0069] Lift the cabin body 1 above the bracket 2, open the clamping ring, place the cabin body 1 on the clamping ring, and insert the locking bolt to fix it.

[0070] Step 1.2: The cleaning oil in the oil storage tank 1 of the oil filling equipment is self-circulating and filtered;

[0071] The oil filling equipment has an oil outlet pipe, an oil inlet pipe and an oil return pipe. The cleaning oil in the oil storage tank of the oil filling equipment is filtered by self-circulation. Specifically, the oil outlet pipe and the oil inlet pipe of the oil filling equipment are connected, and the particle size of the cleaning oil is measured by the particle size analyzer in the online pollution detection system at a frequency of 0.5h / time until the particle size is ≥NAS4 level and the detection is stopped. The oil in the oil storage tank 1 is tested by the filter at a frequency of 1h / time until there is no obvious visible excess on the filter. The filtration accuracy of the filter in this embodiment is 10μm.

[0072] Step 1.3: The oil filling device is connected to the tank body 1 to be cleaned by a pipeline 16;

[0073] like Figure 3 and Figure 4 As shown, the cabin body 1 to be cleaned is divided into a front cabin 11 and a rear cabin 12. The front cabin 11 has two front cabin cleaning ports 111, and the rear cabin 12 has two rear cabin cleaning ports 121. The rear cabin 12 is provided with a rear end frame 14, and a middle end frame 13 is provided between the front cabin 11 and the rear cabin 12. The upper part of the rear cabin 12 is a skin 15, and the skin 15 is connected to the rear end frame 14 and the middle end frame 13.

[0074] The tank 1 to be cleaned has a pipeline 16 inside, and the pipeline 16 includes a first pipeline 161, a second pipeline 162, a third pipeline 163, a fourth pipeline 164, a fifth pipeline 165 and a sixth pipeline 166. The first pipeline 161, the second pipeline 162, the third pipeline 163 and the fourth pipeline 164 are inherent pipelines 16 inside the tank 1. The fifth pipeline 165 is used to charge the mixed gas, and the sixth pipeline 166 is a built-in pipeline 16, which is used to check whether the tank 1 is filled with cleaning oil.

[0075] The third pipeline 163 is disposed in the front compartment 11. The lower pipe opening of the third pipeline 163 is disposed at the bottom of the front compartment 11, and the higher pipe opening of the third pipeline 163 is disposed at the partition wall between the middle end frame 13 and the front compartment 11. The third pipeline 163 is used to introduce the oil in the middle end frame 13 into the front compartment 11.

[0076] The second pipeline 162 passes through the middle end frame 13, with one end disposed in the front compartment 11 and the other end disposed in the rear compartment 12. Specifically, the high pipe opening of the second pipeline 162 is in the front compartment 11, and the low pipe opening is in the rear compartment 12. The second pipeline 162 is used to transport the oil in the front compartment 11 to the rear compartment 12.

[0077] The first pipeline 161 , the fourth pipeline 164 , the fifth pipeline 165 , and the sixth pipeline 166 are provided in the rear compartment 12 .

[0078] The high pipe opening of the first pipeline 161 is connected to the low pipe opening of the second pipeline 162; the low pipe opening of the first pipeline 161 is located at the bottom of the rear cabin 12. The fourth pipeline 164 is in a "F" shape, and the low pipe opening 1641 of the fourth pipeline is located at the bottom of the rear cabin 12, and can extend out of the bottom wall of the rear cabin 12, and is used for oil filling when the pipeline 16 is cleaned; the other end of the pipe opening is located at the rear end frame 14 and the wall of the rear cabin 12, and is used to send the cleaning oil of the rear cabin 12 into the rear end frame 14.

[0079] The fifth pipeline 165 extends from the outer wall of the rear end frame 14 into the rear cabin 12, and the fifth pipeline port 1651 is used to input a mixed gas of compressed gas and liquid nitrogen. The sixth pipeline high port 1662 is set at the top of the rear cabin 12 near the rear end frame 14, and is used to check whether the cabin body 1 is filled with cleaning oil; when checking, a transparent pipeline is inserted into the sixth pipeline high port 1662; the sixth pipeline low port 1661 is set at the bottom of the rear cabin 12 and can extend out of the bottom wall of the rear cabin 12.

[0080] When the pipeline 16 is connected, the oil discharge inlet pipe of the oil filling equipment is connected to the fifth pipeline port 1651 of the rear end frame 14 of the cabin 1, and the exhaust pipe with a pressure sensor is connected to the sixth pipeline low port 1661.

[0081] The pipe mouth and rear end sealing port of the fourth pipeline 164 are connected to the oil inlet pipe of the oil injection equipment; one of the front cabin cleaning ports 111 is the oil return port for cleaning the front cabin 11, and one of the rear cabin cleaning ports 121 is the oil return port for cleaning the rear cabin 12, and is connected to the oil return pipe of the oil injection equipment.

[0082] Step 1.4: Fill the entire tank with oil.

[0083] Specifically:

[0084] Open the oil inlet pipes and oil return pipes of all compartments; open the exhaust pipe connected to the sixth pipeline 166, control the pressure in the cabin to be no more than 0.05MPa, and fill the entire cabin with oil.

[0085] Since the sixth pipeline high pressure port 1662 is located at the highest point of the cabin 1, the sixth pipeline high pressure port 1662 is inserted into a transparent tube and extends out of the cabin wall. Only the sixth pipeline 166 exhaust pipe is opened, and other nozzles and oil filling and draining ports are closed. When filling oil, inject from one of the front cabin cleaning ports 111 to fill the front cabin 11. Inject from one of the rear cabin cleaning ports 121 to fill the rear cabin 12. Since the high end of the third pipeline 163 of the front cabin 11 has a high pressure port, when the front cabin 11 is filled with oil, the high pressure port of the third pipeline 163 discharges oil to the middle end frame 13, the rear end frame 14 and the rear cabin 12. When the sixth pipeline high pressure port 1662 discharges oil, it indicates that the oil in the entire cabin 1 is 80% full, and the oil filling is stopped.

[0086] Step 2: Cleaning of compartments and the entire compartment;

[0087] The cleaning of the cabin 1 is divided into sub-cabin cleaning and whole-cabin cleaning, and the cleaning method of the cabin 1 adopts oil return cleaning.

[0088] The oil return cleaning is to set a cleaning oil filling port and a cleaning oil return port to form an oil circuit circulation, and the excess materials in the cabin 1 are taken out through the circulation.

[0089] In order to improve the cleaning efficiency, when the oil level in the cabin 1 reaches 80% after a certain cleaning period, the cleaning oil in the cabin 1 is returned to the cabin 1.

[0090] The oil discharged from the return oil is filtered and then re-injected into the oil storage tank of the oil injection equipment for recycling.

[0091] In this embodiment, an oil circuit is formed between the oil filling port and the oil return port to carry out cleaning by removing excess materials; the return oil is discharged by filtering it to the standard and then injecting it into the oil storage tank of the oil filling equipment for multiple recycling, thereby saving energy and reducing emissions.

[0092] Step 2.1.1: Cleaning of compartments;

[0093] The compartment cleaning is to fill the front compartment 11 and the rear compartment 12 with cleaning oil and return the oil, and the oil filling port and the oil return port form an oil circuit. During the cleaning process, the pressure in the compartment body 1 is ensured not to exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 19-25L / min.

[0094] The specific cleaning methods for compartment cleaning are:

[0095] The oil filling port of the front cabin 11 is a front cabin cleaning port 111 for filling cleaning oil, and the oil return port of the front cabin 11 is another front cabin cleaning port 111. An oil circuit circulation is formed between the oil filling port and the oil return port of the front cabin 11 to take out the excess in the front cabin 11.

[0096] The oil filling port of the rear cabin 12 is a rear cabin cleaning port 121 for filling cleaning oil, and the oil return port of the rear cabin 12 is another rear cabin cleaning port 121. The oil filling port and the oil return port of the rear cabin 12 form an oil circuit circulation to take out the excess in the rear cabin 12.

[0097] Repeat the above steps for multiple cleanings.

[0098] Since the cabin 1 is large in size and complex in structure, there are many compartment structures and multi-rib structures inside the cabin 1. There are many dead corners for cleaning between the wall of the cabin 1 and the ribs, between the cabin 1 and the wall of the pipeline 16, and on the wall of the cabin 1. The cleaning oil circulates in the pipeline 16 in the cabin 1 by its own gravity or the conveying action of the pump, which is insufficient to carry away the excess. Furthermore, the present embodiment uses a swing mechanism 23 to swing the cleaning cabin 1 during the cleaning process, so that the cleaning oil shakes inside the cabin 1, collides with the cabin wall, the pipe wall, the ribs and the dead corners, and takes out the excess from the dead corners.

[0099] Specifically, considering the weight of the tooling 21 and the cabin 1, the swing angle is ±15°.

[0100] The swinging mode of the cabin 1 is as follows:

[0101] The bracket 2 includes a tool 21, a frame 22 and a swing mechanism 23. The cabin 1 is fixed above the frame 22. Two swing mechanisms 23 are provided, which are respectively arranged on both sides below the frame 22. The swing mechanism 23 includes a motor and an eccentric shaft. The ends of the two eccentric shafts are respectively connected to the outermost upper frame of the frame 22. The eccentric shaft is arranged on the main shaft of the motor. The eccentric shaft rotates, thereby driving the frame 22 to swing, and the tool 21 and the cabin 1 on the upper part of the frame 22 swing accordingly.

[0102] Compared with the prior art, the present embodiment is provided with a swing mechanism 23 of a motor and an eccentric shaft, and the ends of the eccentric shaft are arranged on the two outermost upper frames of the frame 22. When the motor rotates, the eccentric shaft rotates, driving the frame 22 and the cabin body 1 to swing left and right, so that the cleaning oil in the cabin body 1 shakes to collide with the wall surface and the pipe wall of the cabin body 1, and the excess materials stuck to the wall surface and the pipe wall are washed off by the cleaning oil, and the excess materials are taken out when the oil is returned, so that the cleaning of the cabin body 1 is more thorough.

[0103] Furthermore, during the cleaning process, compressed gas is charged into the fifth pipeline external nozzle 1651 .

[0104] Compared with the prior art, the present embodiment fills compressed gas into the cabin 1 during the cleaning process. After the compressed gas enters the cabin 1, airflow is generated, which drives the cleaning oil to flow faster in the cabin 1 and the pipeline 16 system, forming a vortex, so that the cleaning oil can reach some cleaning dead corners, and can better flush various parts of the cabin 1, especially flushing away impurities, oil stains and other pollutants attached thereto, thereby improving the quality and efficiency of cleaning.

[0105] Furthermore, in this embodiment, the compressed gas contains 10% liquid nitrogen.

[0106] Compared with the prior art, in the present embodiment, liquid nitrogen is filled into the cabin 1 during the cleaning process. The liquid nitrogen enters the cabin 1 and vaporizes, causing the oil to boil and hit the tube wall and the inner wall of the cabin 1, thereby circulating aluminum chips, dust and other excess materials out of the cleaning oil, thereby improving the cleaning effect.

[0107] It should be noted that the nitrogen pressure during compartment cleaning is 0.16MPa~0.20Mpa.

[0108] Step 2.1.2: Return oil to the entire tank for cleaning.

[0109] When the entire cabin is cleaned, oil is added to the rear end plugging port, and oil is returned from the oil return port of the front cabin cleaning port 111 and the oil return port of the rear cabin cleaning port 121.

[0110] The oil filling port and the oil return port form an oil circuit circulation, through which the excess materials in the cabin 1 are taken out. During the cleaning process, the pressure in the cabin 1 is ensured not to exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 23-30L / min.

[0111] Repeat the above process and perform cleaning multiple times.

[0112] Similar to the cleaning of the sub-cabins, in the cleaning of the whole cabin, the motor and the swing mechanism 23 on both sides of the eccentric shaft connecting frame 22 are used to swing the cabin body 1; during the cleaning process, the cabin body 1 is filled with compressed gas containing 10% liquid nitrogen.

[0113] It should be noted that the nitrogen pressure is 0.18MPa~0.22MPa when the entire cabin is cleaned.

[0114] Step 3: Clean and inspect the cabin 1;

[0115] During the process of cleaning the compartments or the entire compartment, the tank 1 needs to be cleaned with oil return multiple times. After a period of cleaning, the cleaning inspection is carried out. During the cleaning inspection, the oil discharged from the oil return is measured with a particle analyzer. The oil discharge particle size meets ≥NAS7 level, and the number of excess materials on the filter screen after the oil return is observed to be less than 10.

[0116] Step 4: cleaning the pipeline 16;

[0117] The cabin body 1 has a compartment structure and has a plurality of pipelines 16. The pipelines 16 need to be cleaned after the cabin body 1 is cleaned.

[0118] Since there are many oil passages in the cabin 1 and their diameters are small, in order to prevent the slow oil speed from causing high pressure in the pipeline 16 and creating the risk of bursting, the diameter of the oil outlet is increased when cleaning the pipeline 16 compared to the cabin 1, so as to speed up the cleaning speed and reduce the pressure in the pipeline 16.

[0119] Specifically, the cleaning path of pipeline 16 is:

[0120] Since the fifth pipeline 165 is used for compressed air filling and the sixth pipeline 166 is only used as a mark to indicate whether the cabin 1 is full when oil is filled, the fifth pipeline 165 and the sixth pipeline 166 do not need to be cleaned. Therefore, this embodiment only cleans the first pipeline 161, the second pipeline 162, the third pipeline 163, and the fourth pipeline 164.

[0121] The flow path of the cleaning oil during cleaning is: entering from the lower pipe opening 1641 of the fourth pipeline, entering the rear end frame 14 after flowing through the fourth pipeline 164, filling the rear end frame 14, entering the skin 15, flowing out from the skin 15 into the middle end frame 13, entering the third pipeline 163 from the pipe opening of the third pipeline 163 of the middle end frame 13, and entering the front cabin 11, entering the second pipeline 162 from the high pipe opening of the second pipeline 162 after filling the front cabin 11, and finally flowing out from the lower pipe opening of the first pipeline 161 to the rear cabin 12.

[0122] When the pipeline 16 is cleaned, the cabin 1 needs to be shaken by using the swing mechanism 23 .

[0123] Step 5: Clean and inspect pipeline 16;

[0124] After pipeline 16 is cleaned, the discharged oil in the return oil is filtered multiple times. The condition for stopping cleaning is: the detection cleanliness meets the particle number of 50-100 microns per milliliter of 22 particles, 25-50 microns per milliliter of 126 particles, 15-25 microns per milliliter of 712 particles, and 5-15 microns per milliliter of 4000 particles.

[0125] Step 6: Cleaning is complete.

[0126] The present embodiment utilizes the inherent pipeline 16 in the cabin 1, and adopts two methods of cleaning the cabin 1 and cleaning the pipeline 16. The cabin 1 is swung by the swing mechanism 23 during the cleaning process, compressed gas is filled in to generate vortex to accelerate the oil speed, and liquid nitrogen is filled in to make the oil boil and take away excess materials. This solves the problem that part of the cabin 1 cannot be cleaned properly during the oil cleaning process due to the compartment structure and multiple pipelines, and it is difficult to ensure the cleaning quality requirements of the cabin 1 by using conventional cleaning methods, thereby improving the cleaning efficiency and cleaning quality.

[0127] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for cleaning oil in a multi-compartment and multi-pipeline cabin, characterized in that: The following steps are involved: Step 1: Cleaning and preparation; Step 2: Cleaning of compartments and the entire compartment; Step 3: Cabin cleaning and inspection; Step 4: Cleaning the pipeline (16) of the cabin (1) to be cleaned; Step 5: Cleaning and inspecting the pipeline (16) of the cabin (1) to be cleaned; Step 6: Cleaning is complete.

2. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 1 is characterized in that: The step 1 comprises the following steps: Step 1.1: Fix the cabin body (1) to be cleaned on the tooling (21); Step 1.2: The cleaning oil in the oil storage tank of the oil filling equipment is self-circulating and filtered; Step 1.3: Connect the oil filling equipment to the tank to be cleaned (1) through pipelines; Step 1.4: Fill the entire tank with oil.

3. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 1 is characterized in that: The steps before the sub-cabin cleaning and the whole-cabin cleaning in step 2 are: When the oil level in the cabin reaches 80%, the cleaning oil inside the cabin is returned for cleaning; A cleaning oil filling port and a cleaning oil return port are provided on the front cabin (11) and the rear cabin (12) to form an oil circuit circulation, and excess materials in the cabin are taken out through the circulation; The oil pipe of the oil return port is connected to the filtering device so that the oil discharged from the oil return port can be re-injected into the oil storage tank of the oil injection equipment for recycling after filtering.

4. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 3 is characterized in that: The specific implementation methods of the sub-cabin cleaning and the whole-cabin cleaning in step 2 are as follows: When cleaning the compartments, the front compartment (11) and the rear compartment (12) are respectively filled with cleaning oil and the oil is returned, and the oil filling port and the oil return port form an oil circuit circulation; the above steps are repeated repeatedly; During the cleaning process of the sub-cabin cleaning, the pressure in the cabin is ensured not to exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 19-25L / min; When cleaning the entire cabin, add oil to the rear end plugging port, return oil to the oil return port of the front cabin cleaning port (111) and the oil return port of the rear cabin cleaning port (121); repeat the above steps; During the cleaning process of the entire tank, the pressure inside the tank does not exceed 0.05Mpa, and the cleaning flow rate of each oil circuit is 23-30L / min.

5. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 1, characterized in that: The step 3 comprises: The oil discharged from the sub-tank cleaning and the whole tank cleaning return oil is measured with a particle analyzer. The discharge oil particle size meets ≥NAS7 level and the number of excess materials on the filter after oil return is observed to be less than 10.

6. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 1, characterized in that: The step 4 specifically includes: The cleaning oil enters from the lower pipe opening of the fourth pipeline (164), enters the rear end frame (14) after flowing through the fourth pipeline (164), fills the rear end frame (14), enters the skin (15), flows out from the skin (15) into the middle end frame (13), enters the third pipeline (163) and the front cabin (11) from the pipe opening of the third pipeline (163) of the middle end frame (13), enters the second pipeline (162) from the higher pipe opening of the second pipeline (162) after filling the front cabin (11), and finally flows out from the lower pipe opening of the first pipeline (161) to the rear cabin (12).

7. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 2, characterized in that: The cabin body (1) to be cleaned comprises a front cabin (11), a rear cabin (12), a middle end frame (13) and a rear end frame (14); The front cabin (11) has two front cabin cleaning ports (111); the two front cabin cleaning ports (111) are respectively used for filling oil and returning oil when cleaning the front cabin (11); The rear cabin (12) has two rear cabin cleaning ports (121); the two rear cabin cleaning ports (121) are respectively used for oil filling and oil return when cleaning the rear cabin (12).

8. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 1, characterized in that: The pipeline (16) comprises a first pipeline (161), a second pipeline (162), a third pipeline (163), a fourth pipeline (164), a fifth pipeline (165) and a sixth pipeline (166); The third pipeline (163) is arranged in the front cabin (11); the second pipeline (162) passes through the middle end frame (13); one end of the second pipeline (162) is arranged in the front cabin (11), and the other end is arranged in the rear cabin (12); the first pipeline (161), the fourth pipeline (164), the fifth pipeline (165), and the sixth pipeline (166) are arranged in the rear cabin (12).

9. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to claim 2, characterized in that: The pressure condition for oil filling in the cabin in step 1.4 is: The pressure inside the cabin is not more than 0.05Mpa.

10. The oil cleaning method for a multi-compartment and multi-pipeline cabin according to any one of claims 1 to 9, characterized in that: An oil cleaning device with multiple compartments and multiple pipelines is used.

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