Dynamic coating stripping device and operation method
Through dynamic plating removal device and operation method, the problem of large flow resistance caused by the plating of the thrust chamber of the liquid rocket engine and the gas generator assembly is solved, and the efficient removal of the plating is achieved, the product qualification rate and efficiency are improved, and it is suitable for complex Components of structure and different forming methods.
Patent Information
- Application Number
- CN202411167225.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-01-03
AI Technical Summary
The problem of large flow resistance caused by the plating of regenerative cooling components such as the thrust chamber of the liquid rocket engine and gas generator is difficult to effectively solve the problem of regeneration cooling components such as the plating layer, and the traditional plating removal method is inefficient and long time, which affects the product qualification rate.
A dynamic plating removal device is designed, including a controller, output pump, flowmeter, output conduit, solution tank, input conduit and exhaust pipe. By controlling the operation of the output pump, the flow rate of the plating removal solution in the flow channel is ensured. Within the range of 0-10m/s, non-metallic acid-resistant corrosion-resistant materials are used, conical exhaust pipes and recycled plating removal solution are used, and combined with simple operation methods, efficient removal of plating is achieved.
The complete removal of the plating layer is achieved, the coating removal time is shortened, the efficiency is improved, and the product reworking pass rate is increased. It is suitable for recycled cooling components with complex structures and different forming methods. The device has a simple structure and high safety.
Smart Images
Figure CN119243158A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of mechanical manufacturing, and in particular relates to a dynamic coating stripping device and an operating method. Background Art
[0002] The regenerative cooling components of the thrust chamber and gas generator of liquid rocket engines usually have the characteristics of high processing precision and strict liquid flow test requirements. For regenerative cooling components with small actual flow resistance, the flow resistance of regenerative cooling components can be improved by methods such as dynamic chemical plating, but there is also the risk of large flow resistance due to plating.
[0003] To this end, we provide a dynamic coating stripping device and operation method to solve the problem of large flow resistance caused by flow channel coating in regenerative cooling components such as liquid rocket engine thrust chambers and gas generators. Compared with traditional coating stripping methods, the dynamic coating stripping device can completely strip the coating inside the cooling channel, reducing the coating stripping time, improving the coating stripping efficiency, and increasing the qualified rate of product repairs. Summary of the invention
[0004] The purpose of the present invention is to provide a dynamic coating stripping device and an operating method to solve the problem of large flow resistance caused by coating in regenerative cooling components such as thrust chambers of liquid rocket engines and gas generators.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] The present invention discloses a dynamic coating stripping device, comprising: a controller, an output pump, a driving device, a flow meter, an output conduit, a solution tank, an input conduit and an exhaust pipe, wherein:
[0007] A controller is used to control the driving device to drive the output pump to work, so as to supply the coating stripping solution from the solution tank to the coating flow channel inlet of the regeneration cooling component through the input conduit, the output pump, the flow meter and the output conduit;
[0008] The exhaust pipe is located directly above the outlet of the regenerative cooling assembly and is used to collect and discharge the toxic gases generated during the coating stripping process;
[0009] A flow meter is used to measure the flow rate of the coating stripping solution flowing through the input conduit.
[0010] Furthermore, in the above device, the output pump, flow meter, output conduit, solution tank and input conduit are all made of non-metallic acid-resistant corrosion materials.
[0011] Furthermore, in the above-mentioned device, the controller controls the operation of the output pump by controlling the output power of the driving device, and according to the flow channel size of the regeneration cooling component, the flow velocity V of the coating stripping solution in the flow channel is within the range of 0-10m / s to prevent the solution from flowing too fast and causing a violent reaction to get out of control.
[0012] Furthermore, in the above device, the flow rate is calculated as follows: V=Q / S, wherein V is the flow rate; Q is the flow rate; and S is the area of the smallest flow channel cross section of the regenerative cooling component.
[0013] Furthermore, in the above device, the exhaust pipe adopts a tapered pipe structure.
[0014] Furthermore, in the above-mentioned device, the solution in the solution tank is a coating stripping solution, which passes through the regeneration cooling component flow channel to strip the surface coating and then flows back to the solution tank to achieve continuous recycling. During the stripping process, it is allowed to add solution to the solution tank.
[0015] The present invention discloses an operating method of a dynamic coating stripping device, comprising:
[0016] M1. Calculate the maximum allowable flow rate Q max , minimum solution volume V rym ;
[0017] M2. Brush glue to protect the non-stripped surface of the regenerative cooling component, and connect the output conduit to the flow channel inlet of the regenerative cooling component;
[0018] M3. Connect the input conduit, output pump, flow meter, and output conduit, place the regenerative cooling assembly in the solution tank, and then add the prepared solution larger than the minimum volume V rym Pour the coating stripping solution into the solution tank, and pass the input conduit into the solution;
[0019] M4, calculate the target time t, turn on the controller switch, the drive device drives the output pump to start working, and start timing;
[0020] M5, adjust the controller to control the output pump, the flow meter does not exceed the maximum allowable flow Q max ;
[0021] M6, when the timing reaches the target time t, the controller is turned off;
[0022] M7. Check the coating removal status. If coating still exists, return to M4.
[0023] Furthermore, in the above method, the minimum volume of the solution poured into the solution tank is calculated as follows: V rym =2×(V r +V b +Vl +V c +V z ), where V rym V is the minimum volume of solution in the solution tank; r is the volume of the input duct; V b is the volume of the output pump; V l V is the volume of the flow meter; c is the volume of the output duct; V z is the volume of the regenerative cooling component.
[0024] Furthermore, in the above method, the target time is calculated by the formula t=h / w, wherein t is the target time; h is the estimated coating thickness; and w is the estimated coating stripping rate.
[0025] Furthermore, in the above method, the inspection of coating removal is specifically: using an endoscope to inspect the surface coating condition of the inlet and outlet of the regenerative cooling component, and the surface with the coating removed cleanly is the metallic color of the base material of the regenerative cooling component.
[0026] The beneficial effects of the present invention are:
[0027] (1) The present invention is not limited by the design structure of the regenerative cooling component and is particularly suitable for stripping coatings in flow channels with complex structures.
[0028] (2) The present invention is not limited by the forming method of the regenerative cooling component, and can be used for the removal of the coating of the regenerative cooling component formed by the machining + welding forming method, and can also be used for the removal of the coating of the regenerative cooling component formed directly by additive manufacturing.
[0029] (3) The dynamic coating stripping device of the present invention has a simple structure, high reliability, and low safety risk, and can achieve continuous and stable output of the solution only through the controller.
[0030] (4) The operation method of the present invention is simple, and only a few simple steps are needed to realize the stripping of the coating, and the stripping time is short and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic diagram of a dynamic coating stripping device;
[0032] Figure 2 The following is a flow chart of the operation method. DETAILED DESCRIPTION
[0033] The present invention discloses a dynamic coating stripping device, comprising: a controller 1, an output pump 2, a driving device 3, a flow meter 4, an output conduit 5, a solution tank 6, an input conduit 7 and an exhaust pipe 8, wherein:
[0034] The controller 1 is used to control the driving device 3 to drive the output pump 2 to work, and supply the coating stripping solution from the solution tank 6 through the input conduit 7, the output pump 2, the flow meter 4, and the output conduit 5 to the coating flow channel inlet of the regeneration cooling component;
[0035] The exhaust pipe 8 is located directly above the outlet of the regenerative cooling assembly and is used to collect and discharge the toxic gases generated during the coating stripping process;
[0036] The flow meter 4 is used to measure the flow rate of the coating stripping solution flowing through the input conduit 7.
[0037] Preferably, the output pump 2, the flow meter 4, the output conduit 5, the solution tank 6 and the input conduit 7 are all made of non-metallic acid-resistant materials.
[0038] Preferably, the controller 1 controls the operation of the output pump 2 by controlling the output power of the driving device 3, and makes the flow velocity V of the coating stripping solution in the flow channel within the range of 0-10m / s according to the flow channel size of the regeneration cooling component, so as to prevent the solution from flowing too fast and causing a violent reaction to get out of control.
[0039] Preferably, the flow rate is calculated as follows: V=Q / S, wherein V is the flow rate; Q is the flow rate; and S is the area of the smallest flow channel cross section of the regenerative cooling component.
[0040] Preferably, the exhaust pipe 8 adopts a tapered pipe structure.
[0041] Preferably, the solution in the solution tank 6 is a coating stripping solution, which passes through the regeneration cooling component flow channel to strip the surface coating and then flows back to the solution tank to achieve continuous recycling. During the stripping process, it is allowed to add solution to the solution tank 6.
[0042] like Figure 2 As shown, the present invention discloses a method for operating a dynamic coating stripping device, comprising:
[0043] M1. Calculate the maximum allowable flow rate Q max , minimum solution volume V rym ;
[0044] M2, brush the non-stripping surface of the regenerative cooling component with glue for protection, and connect the output conduit 5 to the flow channel inlet of the regenerative cooling component;
[0045] M3, connect the input conduit 7, output pump 2, flow meter 4, output conduit 5, place the regenerative cooling component in the solution tank 6, and then add the prepared solution larger than the minimum volume V rym The coating stripping solution is poured into the solution tank 6, and the input conduit 7 is passed into the solution;
[0046] M4, calculate the target time t, turn on the switch of the controller 1, the driving device 3 drives the output pump 2 to start working, and start timing;
[0047] M5, adjust the controller 1, control the output pump 2 to ensure that the flow meter 4 does not exceed the maximum allowable flow Q max ;
[0048] M6, when the timing reaches the target time t, the controller 1 is turned off;
[0049] M7. Check the coating removal status. If coating still exists, return to M4.
[0050] Preferably, the minimum volume of solution poured into the solution tank is calculated as: V rym =2×(V r +V b +V l +V c +V z ), where V rym V is the minimum volume of solution in the solution tank; r V is the volume of the input conduit 7; b is the volume of output pump 2; V l V is the volume of the flow meter 4; c V is the volume of the output conduit 5; z is the volume of the regenerative cooling component.
[0051] Preferably, the target time is calculated by a formula of t=h / w, wherein t is the target time; h is the estimated coating thickness; and w is the estimated coating stripping rate.
[0052] Preferably, the coating removal condition is checked, specifically: using an endoscope to check the surface coating condition of the inlet and outlet of the regenerative cooling component, the surface after the coating is removed cleanly is the metallic color of the base material of the regenerative cooling component.
[0053] Example 1
[0054] like Figure 1 As shown, the present invention designs a dynamic nickel layer stripping device and an operating method. The dynamic coating stripping device can completely strip the coating inside the cooling channel, thereby reducing the coating stripping time, improving the coating stripping efficiency, and increasing the qualified rate of product repair.
[0055] (1) Dynamic nickel layer removal device such as Figure 1 As shown, it includes a controller 1, an output pump 2, a driving device 3, a flow meter 4, an output conduit 5, a solution tank 6, an input conduit 7, and an exhaust pipe 8. Calculate the maximum allowable flow rate Q max =v max ×S=10×0.01=0.1m 3 / s, where v max is the maximum allowable flow rate; calculate the minimum solution volume V rym =2×(V r +V b +V l +V c +V z )=2×(0.1+0.2+0.01+0.1+0.3)=1.42m 3 The base material of the regenerative cooling component will react with the plating stripping solution, so the non-stripping surface of the regenerative cooling component is brushed with glue for protection, and the output conduit is connected to the plating flow channel inlet of the regenerative cooling component.
[0056] (2) The non-stripped surface of the regenerative cooling component is protected by brushing glue, and the output conduit is connected to the flow channel inlet of the regenerative cooling component. Both the output conduit and the input conduit are made of non-metallic acid-resistant materials.
[0057] (3) Connect the input conduit, output pump, flow meter, and output conduit, place the regeneration cooling assembly in the solution tank, and then add 1.42m3 of the prepared coating stripping solution. 3 Pour into the solution tank and insert the input catheter into the solution.
[0058] (4) Calculate the target time t = h / w = 30 / 0.5 = 60 min, turn on the controller switch, the drive device drives the output pump to start working, and start timing.
[0059] (5) Adjust the controller to control the output pump, and the flow meter should not exceed Q max =0.1m 3 / s.
[0060] (6) When the timing reaches the target time t = 60 min, turn off the controller.
[0061] (7) Use an endoscope to check the surface coating of the inlet and outlet of the regenerative cooling component. The clean surface after the coating is removed is the metallic color of the base material of the regenerative cooling component.
[0062] Example 2
[0063] (1) Dynamic nickel layer removal device such as Figure 1 As shown, it includes a controller 1, an output pump 2, a driving device 3, a flow meter 4, an output conduit 5, a solution tank 6, an input conduit 7, and an exhaust pipe 8. Calculate the maximum allowable flow rate Q max =v max ×S=10×0.02=0.2m 3 / s, where v max is the maximum allowable flow rate; calculate the minimum solution volume V rym =2×(V r+V b +V l +V c +V z )=2×(0.05+0.2+0.01+0.05+0.3)=1.22m 3 The base material of the regenerative cooling component will react with the plating stripping solution, so the non-stripping surface of the regenerative cooling component is brushed with glue for protection, and the output conduit is connected to the plating flow channel inlet of the regenerative cooling component.
[0064] (2) The non-stripped surface of the regenerative cooling component is protected by brushing glue, and the output conduit is connected to the flow channel inlet of the regenerative cooling component. Both the output conduit and the input conduit are made of non-metallic acid-resistant materials.
[0065] (3) Connect the input conduit, output pump, flow meter, and output conduit, place the regeneration cooling assembly in the solution tank, and then add 1.22m3 of the prepared coating stripping solution. 3 Pour into the solution tank and insert the input catheter into the solution.
[0066] (4) Calculate the target time t = h / w = 45 / 0.5 = 90 min, turn on the controller switch, the drive device drives the output pump to start working, and start timing.
[0067] (5) Adjust the controller to control the output pump, and the flow meter should not exceed Q max =0.2m 3 / s.
[0068] (6) When the timing reaches the target time t = 90 min, turn off the controller.
[0069] (7) Use an endoscope to check the surface coating of the inlet and outlet of the regenerative cooling component. The clean surface after the coating is removed is the metallic color of the base material of the regenerative cooling component.
Claims
1. A dynamic coating stripping device, characterized in that: include: A controller (1), an output pump (2), a driving device (3), a flow meter (4), an output conduit (5), a solution tank (6), an input conduit (7) and an exhaust pipe (8), wherein: The controller (1) is used to control the driving device (3) to drive the output pump (2) to work, so as to supply the coating stripping solution from the solution tank (6) through the input conduit (7), the output pump (2), the flow meter (4), and the output conduit (5) to the coating flow channel inlet of the regeneration cooling component; An exhaust pipe (8), located directly above the outlet of the regenerative cooling assembly, is used to collect and discharge toxic gases generated during the coating stripping process; The flow meter (4) is used to measure the flow rate of the coating stripping solution flowing through the input conduit (7).
2. A dynamic coating stripping device according to claim 1, characterized in that: The output pump (2), flow meter (4), output conduit (5), solution tank (6) and input conduit (7) are all made of non-metallic acid-resistant materials.
3. A dynamic coating stripping device according to claim 1, characterized in that: The controller (1) controls the output power of the driving device (3) to control the operation of the output pump (2), and according to the flow channel size of the regeneration cooling component, the flow velocity V of the coating stripping solution in the flow channel is within the range of 0-10 m / s, thereby preventing the solution from flowing too fast and causing a violent reaction to run away.
4. A dynamic coating stripping device according to claim 3, characterized in that: The flow rate is calculated as follows: V=Q / S, wherein V is the flow rate; Q is the flow rate; and S is the area of the smallest flow channel cross section of the regenerative cooling component.
5. A dynamic coating stripping device according to claim 1, characterized in that: The exhaust pipe (8) adopts a tapered pipe structure.
6. A dynamic coating stripping device according to claim 1, characterized in that: The solution in the solution tank (6) is a coating stripping solution. The coating stripping solution passes through the regeneration cooling component flow channel to strip the coating on its surface and then flows back to the solution tank, thereby achieving continuous recycling. During the stripping process, the solution tank (6) is allowed to be supplemented with solution.
7. A method for operating a dynamic coating stripping device, characterized in that: include: M1. Calculate the maximum allowable flow rate Q max , minimum solution volume V rym ; M2, brushing glue to protect the non-stripping surface of the regenerative cooling component, and connecting the output conduit (5) to the flow channel inlet of the regenerative cooling component; M3. Connect the input conduit (7), output pump (2), flow meter (4), and output conduit (5), place the regenerative cooling assembly in the solution tank (6), and then add the prepared solution with a volume greater than the minimum volume V. rym Pour the coating stripping solution into the solution tank (6), and pass the input conduit (7) into the solution; M4, calculate the target time t, turn on the controller (1), the drive device (3) drives the output pump (2) to start working, and start timing; M5, regulating controller (1), controlling the operation of output pump (2), flow meter (4) does not exceed the maximum allowable flow Q max ; M6, when the timing reaches the target time t, turn off the controller (1); M7. Check the coating removal status. If coating still exists, return to M4.
8. The method for operating a dynamic coating stripping device according to claim 7, characterized in that: The minimum volume of solution poured into the solution tank is calculated as: V rym =2×(V r +V b +V l +V c +V z ), where V rym V is the minimum solution volume in the solution tank; r V is the volume of the input conduit (7); b V is the volume of the output pump (2); l V is the volume of the flow meter (4); c V is the volume of the output conduit (5); z is the volume of the regenerative cooling component.
9. The method for operating a dynamic coating stripping device according to claim 7, characterized in that: The target time is calculated by the formula t=h / w, where t is the target time; h is the estimated coating thickness; and w is the estimated coating stripping rate.
10. The method for operating a dynamic coating stripping device according to claim 7, characterized in that: The inspection of coating removal is specifically as follows: using an endoscope to inspect the surface coating conditions of the inlet and outlet of the regenerative cooling component, and the surface cleanly removed of the coating is the metallic color of the base material of the regenerative cooling component.