Cleaning device and method for redundant materials of three-way catheter

Abstract

The cleaning device comprises a water storage tank, a main shaft box, a booster pump and an air blower, a connecting nozzle is installed in the main shaft box, and a movable connecting nozzle pipe is arranged to be matched with three-way guide pipes of different sizes and shapes; during cleaning, the inlet end branch pipe of the three-way guide pipe is connected with the mouthpiece, and the outlet end branch pipe is respectively connected with the mouthpiece pipe; before the three-way guide pipe is formed, all branch pipes are pre-cleaned, then the three-way pipe is installed in a cleaning device, a prepared cleaning agent is pumped into the cleaning device to clean redundant materials and impurities, and then an air blower is used for blowing in pressurized air to dry the interior of the three-way pipe; and finally, checking the cleaned three-way pipe, and repeatedly cleaning if the three-way pipe is not cleaned. According to the device and method, the problems that in the prior art, the cleaning quality of the three-way guide pipe of the aviation aircraft is not high, and the cleaning precision is poor can be effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cleaning the air vehicle conduit, in particular to a three-way conduit excess cleaning device and method. BACKGROUND

[0002] Stainless steel conduit is widely used in the hydraulic system of the air vehicle, which has the characteristics of small pipe diameter size, complex structure and difficult to clean. Among them, the three-way conduit is a typical form of the conduit, and its structure is more complex and difficult to clean. The existing three-way conduit forming process produces a large amount of metal excess on the inner wall, which is difficult to remove later, seriously reduces the quality of the conduit assembly, and causes great safety hazards. At present, the cleaning process of the conduit generally adopts immersion method, which has low cleaning quality and poor cleaning precision, and cannot completely remove the excess on the inner wall of the conduit. In the prior art, there is a scheme to clean the conduit by using hydraulic pressure to push the deerskin cloth. This method is fast, high in quality and can reduce labor intensity. The patent application No. 202211446474.X discloses a method of using a brush to rotate and axially move to clean the stainless steel pipe, which effectively removes the excess on the pipe wall. However, the three-way conduit has small pipe diameter and complex pipe type, so these methods cannot be effectively used for cleaning.

[0003] At present, the manufacturing quality of the air vehicle conduit is extremely strict, and the cleaning quality, precision and efficiency are also higher. The traditional three-way conduit production process cannot meet the requirements of controlling the excess on the inner wall of the conduit. SUMMARY

[0004] The purpose of the present application is to provide a three-way conduit excess cleaning device and method, which is based on the characteristics of the three-way conduit in the air vehicle, and solves the problems of low cleaning quality and poor cleaning precision of the three-way conduit.

[0005] In order to achieve the above task, the present application adopts the following technical scheme: A three-way conduit excess cleaning device, comprising a water storage tank and a main shaft box; a transmission device is arranged at the front end of the main shaft box, the transmission device is connected with a piston rod arranged in the main shaft box, and the rear end of the piston rod is provided with a mouthpiece pipe; a vertical plate is arranged at the rear end of the main shaft box, a flow divider is arranged on the inner wall of the vertical plate, and a mouthpiece is arranged on the flow divider. The water storage tank stores the prepared cleaning agent, and a booster pump and a blower are arranged outside the water storage tank; the booster pump is connected with the water storage tank through a pipeline, and the booster pump and the blower are connected with a water channel and an air channel in the flow divider through a liquid delivery pipe and a gas delivery pipe respectively; the water channel, the air channel and the mouthpiece are communicated.

[0006] Further, the transmission device comprises a hydraulic cylinder, the hydraulic cylinder is coaxially connected with the piston rod, and is used for driving the piston rod to move in the axial direction in the main shaft box.

[0007] Further, liquid flow limiting valves and gas flow limiting valves are respectively installed on the booster pump and the air blower.

[0008] Further, the cleaning device further comprises a clamp for connecting the pipe nozzle, the nozzle and the three-way conduit to be cleaned, the clamp comprising a clamp and a chuck; wherein the chuck is provided with an external threaded interface, the chuck is installed on the inlet end branch pipe of the three-way conduit, and the external threaded interface is connected with the nozzle; after the outlet end branch pipe of the three-way conduit is connected with the nozzle pipe, the clamp is fixed around the connection position; the nozzle pipe and the clamp are both provided with a drain hole for the discharge of the cleaning agent.

[0009] A cleaning method for the three-way conduit excess, comprising: Step 1, configure the cleaning agent of the three-way pipe; the composition of the cleaning agent includes surfactant, organic acid, chelating agent, corrosion inhibitor, alcohol solvent, thickening agent, base; Step 2, before the three-way conduit to be cleaned is welded and formed, each branch pipe constituting the three-way conduit is pre-cleaned, and after pre-cleaning, the three-way conduit is formed; Step 3, open the air blower, the booster pump and the transmission device; determine the inlet end branch pipe of the three-way conduit, connect the chuck with the inlet end branch pipe, and connect the external threaded interface with the nozzle; then move the pipe nozzle to the appropriate position by driving the piston rod through the transmission device, so as to connect the outlet end branch pipe of the three-way conduit with the nozzle pipe, and fix the clamp around the connection position; Step 4, inject the cleaning agent into the water storage tank, open the liquid flow limiting valve, close the gas flow limiting valve, and start the booster pump; the booster pump pressurizes the cleaning agent in the water storage tank, and then inputs it into the water channel of the flow divider through the infusion tube, and flows into the inlet end branch pipe connected with the nozzle; the cleaning agent carries the excess and impurities in the inlet end branch pipe to flow through the other two outlet end branch pipes, and then is discharged to the water storage tank arranged in the main shaft box through the drain holes at the nozzle pipe and the clamp; After cleaning, close the booster pump and tighten the liquid flow limiting valve; open the gas flow limiting valve, start the air blower, and blow the pressurized air into the nozzle through the air channel of the flow divider, and blow into the three-way conduit until the cleaning agent volatilizes; Step 5, inspect the cleaned three-way conduit, and if it is not clean, repeat step 4.

[0010] Further, the mass percentage of the surfactant is 10% to 12%; the mass percentage of the organic acid is 10% to 15%; the mass percentage of the chelating agent is 5% to 8%; the mass percentage of the corrosion inhibitor is 2% to 4%; the mass percentage of the alcohol solvent is 5% to 10%; the mass percentage of the thickening agent is 0.5% to 1%; and the rest is the base.

[0011] Further, in the cleaning agent, the surfactant is selected from alkyl glycoside, the organic acid is selected from gluconic acid or citric acid, the chelating agent is selected from sodium gluconate, the corrosion inhibitor is selected from sodium silicate, the alcohol solvent is selected from ethanol or isopropyl alcohol, and the thickening agent is selected from xanthan gum, and the base is deionized water.

[0012] Further, each branch pipe of the tee conduit is pre-cleaned, specifically: Capron threads are used to tie the fine cloth soaked with the cleaning agent, and the fine cloth is moved from one end to the other end of each branch pipe by means of clean pressurized air; if there are oil stains or excess particles on the surface of the fine cloth, the above operation is repeated.

[0013] Further, the cleaned tee conduit is tested, including: The blower is closed and the clamp is loosened, a piece of white cotton cloth is placed outside the outlet end of the branch pipe, the blower is reopened, and the white cloth is blown by pressurized air from the mouthpiece for a certain period of time, and it is visually checked whether there are excess particles or oil stains on the white cloth; if there are excess particles or oil stains on the white cloth, it indicates that the cleaning is not complete.

[0014] Further, the pressure of the pressurized air in step 2 is 0.3-0.6 MPa; the pressure of the cleaning agent in step 4 is not less than 1.0 MPa, and the pressure of the pressurized air is 0.4-0.5 MPa; the pressure of the pressurized air in step 5 is 0.5-0.7 MPa.

[0015] Compared with the prior art, the present application has the following technical features: The present application can clean the tee conduit of multiple types and multiple shapes on an aircraft, and the cleaning quality of the tee conduit can be effectively improved by using the method, and the excess material on the inner wall of the conduit is completely removed, and the cleaning efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of a tee conduit excess material cleaning device of the present application; Figure 2 It is a structure schematic view of a clamp and chuck part; Figure 3 It is a top view schematic view of the cleaning device in the present application; Figure 4 It is a structure schematic view of a tee pipe of an aircraft hydraulic system to be cleaned in an embodiment of the present application; Figure 5 It is a structure exploded view of each branch pipe of the tee pipe in the embodiment.

[0017] Explanation of reference numerals in the attached drawings: 1. Water tank; 2. Hydraulic cylinder; 3. Spindle box; 4. Piston rod; 5. Connecting nozzle; 6. Diverter block; 7. Nozzle; 8. Liquid delivery pipe; 9. Gas delivery pipe; 10. Gas flow control valve; 11. Liquid flow control valve; 12. Baffle; 13. Blower; 14. Booster pump; 15. Vertical plate; 16. Clamp with drain outlet; 17. Chuck; 18. External threaded nozzle. Detailed Implementation

[0018] Considering the characteristics of T-junction conduits used in aircraft—small diameter, complex structure, numerous bends, and the accumulation of large amounts of metal residue on their inner walls during manufacturing, making them difficult to clean—this invention first provides a device for cleaning the residue from T-junction conduits. (See [link to relevant documentation]). Figures 1 to 3 The device includes a water storage tank 1, a working area, and a transmission module, wherein: The working area includes a spindle box 3. A transmission device is provided at the front end of the spindle box 3. The transmission device is connected to a piston rod 4 that is axially mounted in the spindle box 3. A nozzle tube 5 is provided at the rear end of the piston rod 4. A vertical plate 15 is provided at the rear end of the spindle box 3. A flow divider 6 is arranged axially on the inner wall of the vertical plate 15. A nozzle 7 is installed on the flow divider 6. Optionally, the transmission device includes a hydraulic cylinder 2. The hydraulic cylinder 2 is coaxially connected to the piston rod 4 and is used to drive the piston rod 4 to move axially in the spindle box 3.

[0019] The water storage tank 1 is installed at the lower part of the main shaft box 3, and the main shaft box 3 and the water storage tank 1 are separated by a baffle 12. A booster pump 14 and a blower 13 are provided on the outside of the water storage tank. The booster pump 14 is connected to the water storage tank 1 through a pipeline. The booster pump 14 and the blower 13 are respectively equipped with a liquid flow limiting valve 11 and a gas flow limiting valve 10 and are connected to the water channel and gas channel of the diversion block 6 through a liquid delivery pipe 8 and a gas delivery pipe 9. The water channel and the gas channel are connected to the connector 7.

[0020] The number of nozzles 5 corresponds to the number of inlet branch pipes of the three-way conduit to be cleaned; the number of nozzles 7 corresponds to the number of outlet branch pipes of the three-way conduit; in practical applications, multiple piston rods can be installed, with one nozzle 5 at the end of each piston rod, such as... Figure 3 As shown; this not only allows for cleaning of the three-way catheter, but also allows for the adaptation of catheters with more interfaces.

[0021] The cleaning device also includes a clamp for connecting the nozzle 5, nozzle 7, and the three-way conduit to be cleaned. The clamp includes a clamp 16 and a chuck 17. The chuck 17 is provided with an external threaded interface 18. The chuck 17 is installed on the inlet branch pipe of the three-way conduit, and the external threaded interface 18 is connected to the nozzle 7. After the outlet branch pipe of the three-way conduit is connected to the nozzle pipe 5, the clamp 16 is fixed around and fixed in the connection position. Both the nozzle pipe 5 and the clamp 6 are provided with drainage holes for the discharge of cleaning agent.

[0022] Based on the above technical solutions, the present invention further provides a method for cleaning excess material from a three-way catheter, comprising: Step 1: Prepare the cleaning agent for the T-connector.

[0023] Develop an environmentally friendly cleaning agent for cleaning tee conduits. The cleaning agent's components include: Surfactants, organic acids, chelating agents, corrosion inhibitors, alcohol solvents, thickeners, and substrates.

[0024] In one embodiment, the surfactant is selected from alkyl glycosides, accounting for 10% to 12% by mass; the organic acid is selected from gluconic acid or citric acid, accounting for 10% to 15% by mass; the chelating agent is selected from sodium gluconate, accounting for 5% to 8% by mass; the corrosion inhibitor is selected from sodium silicate, accounting for 2% to 4% by mass; the alcohol solvent is selected from ethanol or isopropanol, accounting for 5% to 10% by mass; the thickener is selected from xanthan gum, accounting for 0.5% to 1% by mass; the remainder is the base; the base is deionized water.

[0025] Step 2, pre-cleaning of the three-way catheter.

[0026] Before forming the T-joint conduit, each branch tube constituting the T-joint is pre-cleaned using a cloth strip washing method. Each branch tube includes an inlet branch tube and an outlet branch tube. A fine, flat cloth soaked in cleaning agent is tied to a 0.6mm diameter capryllium thread, and the cloth is moved from one end of each branch tube to the other using clean, pressurized air at 0.3MPa~0.6MPa. If oil or excess particles are present on the surface of the cloth, the above operation is repeated. After pre-cleaning, the branch tubes are welded together to form a complete T-joint conduit.

[0027] Step 3, install the T-connector.

[0028] Connect the power supply, turn on the blower 13, booster pump 14 and transmission device, and check whether each mechanism of the entire cleaning device is operating normally; then, locate the inlet branch of the three-way conduit, connect the chuck 17 to the inlet branch, and connect the external thread interface 18 to the connector 7; then drive the piston rod 4 through the transmission device to move the connector 5 to a suitable position so that the outlet branch of the three-way conduit can be connected to the connector 5; after the outlet branch is connected to the connector 5, fix the clamp 16 around the connection position.

[0029] Step 4, the cleaning process of the three-way catheter.

[0030] Inject cleaning agent into water tank 1, open liquid flow limiting valve 11, close gas flow limiting valve 10, start booster pump 14, and adjust the pressure of cleaning agent; booster pump 14 pressurizes the cleaning agent in water tank 1 to 1.0 MPa and then inputs it into the water channel of diverter block 6 through delivery pipe 8, and flows into the inlet branch pipe connected to nozzle 7; the cleaning agent carries excess and impurities in the inlet branch pipe through the other two outlet branch pipes, and is discharged into the water storage tank set in spindle box 3 through the drain hole at nozzle pipe 5 and clamp 16; due to the large pressure during cleaning, nozzle pipe 5 and clamp 16 can effectively fix the outlet branch pipe.

[0031] After the preset cleaning time, turn off the booster pump 14 and tighten the liquid flow control valve 11; open the gas flow control valve 10, start the blower 13, and blow 0.4~0.5Mpa pressurized air into the nozzle 7 through the air passage of the distributor block 6 and into the three-way conduit until the cleaning agent evaporates.

[0032] Step 5: Inspection of the three-way catheter after cleaning.

[0033] Turn off blower 13 and loosen clamp 16. Place a piece of white cotton cloth 50mm from the outlet of the branch pipe. Turn blower 13 back on and blow pressurized air from nozzle 7 onto the white cloth for 2 minutes. Visually inspect the white cloth for any foreign particles or oil spots. If foreign particles or oil spots appear on the white cloth, repeat step 4. In this step, the pressure of the pressurized air is 0.5~0.7MPa.

[0034] Step 6: After cleaning is complete, turn off blower 13, disconnect the power supply, and drain the contaminated cleaning agent.

[0035] Example: In this embodiment, the three-way conduit to be cleaned has the following shape: Figure 4 As shown, the material specification is JG8X0.8mm, and the material used is 1Cr18Ni10Ti stainless steel. The specific steps include: (1) Prepare a cleaning agent for cleaning three-way conduits, wherein the components of the cleaning agent include (by mass percentage): 10% alkyl glycoside, 12% citric acid, 6% sodium gluconate, 4% sodium silicate, 10% ethanol, 1% xanthan gum, and 57% deionized water; add alkyl glycoside, sodium gluconate and ethanol to a mixing tank and stir for 30 minutes until homogeneous, add citric acid and sodium silicate to the mixing tank and stir for 10 minutes until completely dissolved, finally add xanthan gum to adjust the viscosity and then add deionized water to obtain the prepared cleaning agent.

[0036] (2) In this embodiment, the three-way conduit to be cleaned includes an inlet branch pipe A and two outlet branch pipes B and C; before welding, each branch pipe A, B, and C is treated as follows: Thoroughly saturate a clean, fine cloth with cleaning agent. Tie a 0.6mm diameter capryllium thread to one end of the cloth and tightly tuck the cloth into the welded end of the branch pipe and tee connector. Figure 5 (See the "in" end) and pass the capryllium thread through the branch pipe from the "in" end to the "out" end; adjust the pressure of the spray gun connected to dry pressurized air to 0.6MPa, and push the fine flat cloth through the guide tube; if there is oil or excess particles on the surface of the fine flat cloth that has been passed through, replace the fine flat cloth and repeat the above operation.

[0037] (3) Connect the power supply, check the cleaning equipment, and ensure that each mechanism is operating normally.

[0038] (4) Select clamps 16 and chucks 17 that are appropriate for the size of the three-way conduit. Use chucks 17 and external threaded interface 18 to connect the inlet branch pipe A to the connector 7. Use clamps 16 to connect the two outlet branch pipes B and C to the connector pipe 5 respectively.

[0039] (5) Add cleaning agent to water tank 1, start booster pump 14, adjust working pressure to 1.0MPa, so that cleaning agent flows into inlet branch pipe A connected to nozzle 7 through infusion pipe 8 and diversion pipe 6. The cleaning agent carries excess and impurities in the pipe through the other two outlet branch pipes B and C, and is discharged into water tank through the drain hole at clamp 16. After cleaning, turn off booster pump 14, start blower 13, adjust working pressure to 0.5MPa, and use pressurized air to dry the conduit until no cleaning agent is discharged from outlet branch pipes B and C, and it has completely evaporated. (6) Turn off blower 13 and loosen clamp 16. Place a piece of white cotton cloth 50mm away from the outlet of branch pipes B and C at the outlet end. Turn blower 13 back on and blow the white cloth with 0.7MPa pressurized air from the inlet for 2 minutes. Visually check whether there are any foreign particles or oil spots on the white cloth. If there are foreign particles or oil spots on the white cloth, repeat the above cleaning operation.

[0040] (7) After cleaning, turn off the blower 13, disconnect the power supply, and drain the contaminated cleaning agent.

[0041] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A device for cleaning excess material from a three-way conduit, characterized in that, It includes a water storage tank (1) and a spindle box (3); the front end of the spindle box (3) is provided with a transmission device, which is connected to a piston rod (4) assembled in the spindle box (3), and a nozzle pipe (5) is provided at the rear end of the piston rod (4); a vertical plate (15) is provided at the rear end of the spindle box (3), and a diverter block (6) is arranged on the inner wall of the vertical plate (15), and a nozzle (7) is installed on the diverter block (6); The water tank (1) stores the prepared cleaning agent. A booster pump (14) and a blower (13) are provided on the outside of the water tank. The booster pump (14) is connected to the water tank (1) through a pipeline. The booster pump (14) and the blower (13) are connected to the water channel and air channel in the diversion block (6) through the liquid delivery pipe (8) and the air delivery pipe (9), respectively. The water channel and the air channel are connected to the nozzle (7).

2. The cleaning device for excess material in a three-way conduit according to claim 1, characterized in that, The transmission device includes a hydraulic cylinder (2), which is coaxially connected to the piston rod (4) and is used to drive the piston rod (4) to move axially within the spindle box (3).

3. The cleaning device for excess material in a three-way conduit according to claim 1, characterized in that, Liquid flow limiting valve (11) and gas flow limiting valve (10) are installed on booster pump (14) and blower (13), respectively.

4. The cleaning device for excess material in a three-way conduit according to claim 1, characterized in that, The cleaning device also includes a clamp for connecting the nozzle (5), the connector (7) and the three-way conduit to be cleaned. The clamp includes a clamp (16) and a chuck (17). The chuck (17) is provided with an external threaded interface (18). The chuck (17) is installed on the inlet branch pipe of the three-way conduit, and the external threaded interface (18) is connected to the connector (7). After the outlet branch pipe of the three-way conduit is connected to the connector pipe (5), the clamp (16) is fixed around the connection position. Both the connector pipe (5) and the clamp (6) are provided with drain holes for the discharge of cleaning agent.

5. A method for cleaning excess material from a three-way catheter, based on the cleaning apparatus according to any one of claims 1-4; the method comprising: Step 1: Prepare a cleaning agent for the three-way pipe; the cleaning agent comprises surfactants, organic acids, chelating agents, corrosion inhibitors, alcohol solvents, thickeners, and a base material. Step 2: Before the T-connector to be cleaned is welded and formed, each branch pipe that makes up the T-connector is pre-cleaned, and the T-connector is formed after pre-cleaning. Step 3: Turn on the blower (13), booster pump (14) and transmission device; determine the inlet branch pipe of the three-way conduit, connect the chuck (17) to the inlet branch pipe, and connect the external thread interface (18) to the connector (7); then drive the piston rod (4) through the transmission device to move the connector (5) to a suitable position so that the outlet branch pipe of the three-way conduit can be connected to the connector pipe (5), and fix the clamp (16) around the connection position. Step 4: Inject cleaning agent into water tank (1), open liquid flow limiting valve (11), close gas flow limiting valve (10), and start booster pump (14); booster pump (14) pressurizes the cleaning agent in water tank (1) and inputs it into the water channel of the diversion block (6) through the delivery pipe (8), and flows into the inlet end branch pipe connected to the nozzle (7); the cleaning agent carries the excess and impurities in the inlet end branch pipe through the other two outlet end branch pipes, and is discharged into the water storage tank set in the spindle box (3) through the drain hole at the nozzle pipe (5) and clamp (16); After cleaning, turn off the booster pump (14) and tighten the liquid flow restrictor valve (11); open the gas flow restrictor valve (10), start the blower (13), and blow pressurized air into the nozzle (7) through the air passage of the splitter block (6) until the cleaning agent evaporates. Step 5: Inspect the cleaned three-way conduit. If it is not cleaned properly, repeat step 4.

6. The method for cleaning excess material from a three-way catheter according to claim 5, characterized in that, The surfactant comprises 10% to 12% by mass; the organic acid comprises 10% to 15% by mass; the chelating agent comprises 5% to 8% by mass; the corrosion inhibitor comprises 2% to 4% by mass; the alcohol solvent comprises 5% to 10% by mass; the thickener comprises 0.5% to 1% by mass; and the remainder is the base material.

7. The method for cleaning excess material from a three-way catheter according to claim 5, characterized in that, In the cleaning agent, the surfactant is selected as alkyl glycoside, the organic acid is selected as gluconic acid or citric acid, the chelating agent is selected as sodium gluconate, the corrosion inhibitor is selected as sodium silicate, the alcohol solvent is selected as ethanol or isopropanol, the thickener is selected as xanthan gum, and the substrate is deionized water.

8. The method for cleaning excess material from a three-way catheter according to claim 5, characterized in that, Each branch of the three-way catheter is pre-cleaned, specifically as follows: Tie a fine cloth soaked in detergent to a caprylic thread, and use clean pressurized air to move the cloth from one end of each branch tube to the other; if there is oil or excess particles on the surface of the cloth, repeat the above operation.

9. The method for cleaning excess material from a three-way catheter according to claim 5, characterized in that, The cleaned tee tube was inspected, including: Turn off the blower (13) and loosen the clamp (16). Place a piece of white cotton cloth outside the outlet of the branch pipe at the outlet end. Turn the blower (13) back on and blow pressurized air from the nozzle (7) onto the white cloth for a certain period of time. Visually check whether there are any foreign particles or oil spots on the white cloth. If there are foreign particles or oil spots on the white cloth, it indicates that it has not been cleaned properly.

10. The method for cleaning excess material from a three-way catheter according to claim 5, characterized in that, In step 2, the pressure of the pressurized air is 0.3 MPa to 0.6 MPa; in step 4, the pressure of the cleaning agent is not less than 1.0 MPa, and the pressure of the pressurized air is 0.4 to 0.5 MPa; in step 5, the pressure of the pressurized air is 0.5 to 0.7 MPa.

Images