Cleaning device and cleaning method for high-pressure compressor blade

Abstract

The invention belongs to the field of complete machine maintenance, and particularly relates to a cleaning device and method for high-pressure compressor blades, the device comprises a large cleaning basket and small cleaning baskets, the large cleaning basket and the small cleaning baskets are both of hollow structures, a plurality of small cleaning baskets are stacked in the large cleaning basket, and each small cleaning basket comprises a fixed outer basket; safety nets are arranged on the bottom face and the periphery of the fixed outer basket, a detachable partition net is hung on the side wall of the fixed outer basket and comprises a basic frame, a plurality of supporting rods are arranged in the basic frame at equal intervals, every two supporting rods form an inserting groove, and blades are placed in the inserting grooves at intervals. According to the cleaning device, one large cleaning basket can contain a plurality of small cleaning baskets, the small cleaning baskets are used for containing the compressor blades, the whole cleaning baskets are hoisted and placed in the cleaning tank to be cleaned after being placed, the requirement for cleaning multiple stages of blades at a time can be met, meanwhile, the blades do not collide or extrude one another, the blades can make full contact with a cleaning agent, and the cleaning efficiency is improved. The cleaning effect of the cleaning agent on blade surface carbon deposition is improved.

Description

Technical Field

[0001] The invention belongs to the field of whole machine maintenance, and in particular relates to a cleaning device and a cleaning method for high-pressure compressor blades. Background Art

[0002] Blades are very important rotating parts of aircraft engines, including rotor blades and stator blades. The function of compressor blades is to compress the gas through the rotation of the rotor. The compressed gas eventually enters the combustion chamber and mixes with the fuel for combustion. The structure of high-pressure compressor blades is as follows: Figure 1 As shown, it generally includes the blade tip, blade body, tenon, inlet edge, exhaust edge, blade basin, blade back, etc. High-pressure compressor blades have the following characteristics:

[0003] (1) Large number: Each stage has dozens to hundreds of blades, and each engine high-pressure compressor has thousands of blades.

[0004] (2) Relatively small size: The length of high-pressure compressor blades is generally less than 150 mm, the width is generally less than 50 mm, and the thickness is generally less than 3 mm.

[0005] (3) Light weight: The heaviest blade does not exceed 150g, and the lightest weighs only a few dozen grams.

[0006] (4) Complex structure: To meet the requirements of fluid mechanics, the compressor blades are irregular in shape and the blade body is composed of various curved surfaces.

[0007] After an aircraft engine has been working for a certain period of time, it needs to be returned to the factory for fault inspection and repair. Since the high-pressure compressor rotates and works under high temperature and high pressure, the working conditions are relatively harsh. Dust, oil, oil gas, etc. will form stubborn carbon deposits on the surface of the blades under high temperature and high pressure environment. The carbon deposits on the surface of the blades need to be cleaned during maintenance. The current process flow for cleaning blades is: basket loading → water-based detergent degreasing → rinsing → water-based detergent decarbonizing → rinsing → manual rinsing → inspection → drying. Due to the large number and small size of compressor blades, it is impossible to isolate and clean them one by one in a basket. Currently, they can only be cleaned in the form of centralized stacking. The advantage of this cleaning method is that a large number of blades can be cleaned at one time, avoiding multiple basket loading, and high efficiency, but there are the following problems:

[0008] (1) Centralized stacking can easily cause blades to squeeze and bump against each other. After cleaning, the blade surface is prone to scratches, notches, deformation and other damage, which increases the workload for subsequent inspection and repair. At the same time, the damaged position is prone to stress concentration, which brings quality and safety risks to the operation of the aircraft engine.

[0009] (2) When the blades are densely stacked, the cleaning agent can only fully soak into the outer surface of the blades during cleaning, and the blades in the center cannot fully contact with the cleaning agent, resulting in poor cleaning quality of the blade surface.

[0010] Therefore, it is necessary to design a cleaning device suitable for high-pressure compressor blades to ensure cleaning efficiency while improving cleaning quality. Summary of the invention

[0011] In view of the shortcomings of the prior art, the present invention proposes a cleaning device and a cleaning method for high-pressure compressor blades, which can effectively meet the cleaning requirements of high-pressure compressor blades, enable the blades to be cleaned in batches, and fully contact the cleaning agent with the blades. At the same time, it avoids the sharp parts such as the blade tip, the intake edge, and the exhaust edge from squeezing and bumping against each other, thereby improving the cleaning quality of the blades.

[0012] A cleaning device for high-pressure compressor blades comprises a large cleaning basket and a small cleaning basket. Both the large cleaning basket and the small cleaning basket are hollow structures. A plurality of small cleaning baskets are stacked in the large cleaning basket. The small cleaning basket comprises a fixed outer basket. A safety net is arranged on the bottom and around the fixed outer basket. A detachable partition net is hung on the side wall of the fixed outer basket. The detachable partition net comprises a basic frame. A plurality of support rods with the same spacing are arranged in the basic frame. Every two support rods form a slot. Blades are placed in the slot at intervals.

[0013] A positioning rod is arranged on the side wall of the fixed outer basket, and the detachable partition net is hung on the positioning rod.

[0014] The size of the large cleaning basket matches the size of the cleaning tank and can accommodate more than 10 small cleaning baskets.

[0015] The top of the large cleaning basket is provided with a hanging point, and the side is provided with a detachable door.

[0016] Positioning stops are arranged at the four corners of the top of the small cleaning basket, which are used for positioning the small cleaning baskets when they are stacked and preventing them from shaking during cleaning.

[0017] The fixed outer basket is provided with a retractable handle, which includes a handle, a hook is provided at the bottom of the handle, and a fixing ring is provided on the fixed outer basket. The handle is stretched so that the hook of the handle is clamped on the fixing ring for extending the handle, and the handle is pushed so that the handle is clamped above the fixing ring for contracting the handle.

[0018] A fixed handle is provided on the detachable partition net.

[0019] The large cleaning basket, the fixed outer basket, the retractable handle, the basic frame, and the support rod are all made of stainless steel bars, and the outside of the stainless steel bars of the support rod is also wrapped with a Teflon tube.

[0020] A cleaning method for a high-pressure compressor blade cleaning device is implemented based on the above device and specifically includes the following steps:

[0021] Step 1: Place the leaves one by one in the slots of the removable mesh of the small cleaning basket, with a row of leaves placed every other slot;

[0022] Step 2: Remove the removable door of the large cleaning basket, and place the small cleaning basket with the blades in the large cleaning basket. When placing, place the bottom of a small cleaning basket on the positioning stop of another small cleaning basket. After placing the small cleaning baskets, install the removable door;

[0023] Step 3: Use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the water-based degreasing tank for degreasing;

[0024] Step 4: After degreasing, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the rinsing tank for rinsing;

[0025] Step 5: After rinsing, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the alkaline cleaning tank to remove carbon deposits;

[0026] Step 6: After removing the carbon deposits, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the rinsing tank for rinsing;

[0027] Step 7: After rinsing, lift the large cleaning basket with the small cleaning basket to the lifting point with a crane and place it in the manual cleaning area;

[0028] Step 8: Remove the removable door on the large cleaning basket, take out the small cleaning basket manually, and check the cleaning quality of the blade surface. If it is clean, put the blade in the drying box to dry, and then send it to the next process after drying; if the inspection finds that the cleaning is not clean, repeat the cleaning process of steps 3 to 7 until the blade is clean.

[0029] The beneficial effects of the present invention are as follows:

[0030] The cleaning device of the present application adopts a large cleaning basket inside a small cleaning basket. A large cleaning basket can hold multiple small cleaning baskets. The small cleaning baskets are used to place compressor blades. After being placed, they are hoisted as a whole and placed in a cleaning tank for cleaning. This can meet the needs of cleaning multiple stages of blades at one time. At the same time, the blades are placed in an orderly and isolated manner to avoid collision and squeezing between the blades, and the blades and the cleaning agent can fully contact each other. The carbon deposits cleaned can be dissolved in the cleaning agent in time, thereby improving the cleaning effect of the cleaning agent on the carbon deposits on the blade surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the compressor blade structure of the present invention;

[0032] Figure 2 The overall structural diagram of the cleaning device of the present invention;

[0033] Figure 3 A schematic structural diagram of a large cleaning basket of the present invention;

[0034] Figure 4A schematic diagram of the overall structure of the loading blades of the small cleaning basket of the present invention;

[0035] Figure 5 A schematic diagram of the disassembly structure of the small cleaning basket of the present invention;

[0036] Figure 6 A schematic diagram of the assembly structure of the small cleaning basket of the present invention;

[0037] In the attached drawings: 1. large cleaning basket; 101. hanging point; 102. removable door; 2. small cleaning basket; 201. fixed outer basket; 202. safety net; 203. removable partition net; 204. basic frame; 205. support rod; 206. blades; 207. positioning rod; 208. positioning stop; 209. handle; 210. fixing ring; 211. fixed handle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Aiming at the problem that the compressor blades are large in number, small in size, light in weight, and of many specifications, and the blade tips, inlet edges, exhaust edges, and other parts on the blades are relatively sharp, and stacking and cleaning are likely to cause damage to the blade body, blade root, blade basin, blade back, and other parts, the present application proposes a cleaning device for high-pressure compressor blades, such as Figures 2 to 6 As shown, it includes a large cleaning basket 1 and a small cleaning basket 2. Both the large cleaning basket 1 and the small cleaning basket 2 are hollow structures. A plurality of small cleaning baskets 2 are stacked in the large cleaning basket 1. The size of the large cleaning basket 1 matches the size of the cleaning tank and can accommodate more than 10 small cleaning baskets 2. A hanging point 101 is provided on the top of the large cleaning basket 1 for hanging during the cleaning process, and a detachable door 102 is provided on the side for easy access to the small cleaning basket 2. The large cleaning basket 1 is welded with SUS304 stainless steel bars as a whole to enhance corrosion resistance and adapt to immersion in alkaline cleaning agents.

[0040] The four corners of the top of the small cleaning basket 2 are provided with positioning stoppers 208. The positioning stoppers 208 are used to position the small cleaning baskets 2 when they are stacked, and at the same time, the small cleaning baskets 2 are prevented from shaking during the cleaning process.

[0041] The small cleaning basket 2 includes a fixed outer basket 201, and a safety net 202 is provided on the bottom and around the fixed outer basket 201 to prevent the blades 206 from falling during the cleaning process; a positioning rod 207 is provided on the side wall of the fixed outer basket 201, and a detachable partition net 203 is hung on it, and the detachable partition net 203 includes a basic frame 204, and a plurality of support rods 205 with the same spacing are provided in the basic frame 204, and every two support rods 205 form a slot, and the blades 206 are placed in the slots at intervals. More than 50 slots are designed in each small cleaning basket 2 to ensure that each small cleaning basket 2 can hold at least one level of blades, and the support rod 205 is a SUS304 stainless steel bar, and the stainless steel bar of the support rod 205 is also wrapped with a Teflon tube on the outside to prevent the blades 206 from directly contacting the metal after being placed;

[0042] The fixed outer basket 201 is provided with a retractable handle, which includes a handle 209. A hook is provided at the bottom of the handle 209. A fixing ring 210 is provided on the fixed outer basket 201. The handle 209 is stretched so that the hook of the handle 209 is clamped on the fixing ring 210 for extending the handle 209. The handle 209 is pushed so that the handle 209 is clamped on the top of the fixing ring 210 for retracting the handle 209, which is convenient for turnover and transportation. A fixed handle 211 is provided on the detachable partition net 203 for easy disassembly. The fixed outer basket 201, the retractable handle and the basic frame 204 are all welded from SUS304 stainless steel bars.

[0043] The cleaning device of the present application adopts the method of a large cleaning basket 1 with a small cleaning basket 2. The small cleaning basket 2 is used to place the compressor blades, but is not suitable for being placed directly in the cleaning tank. When using the cleaning device, the small cleaning basket 2 with the blades installed is placed in the large cleaning basket 1. A large cleaning basket 1 can hold multiple small cleaning baskets 2. After being placed, the whole cleaning basket is hoisted and placed in the cleaning tank for cleaning, which increases the cleaning volume at one time and improves the cleaning capacity; and the small cleaning basket 2 can realize the blades to be placed in a graded, orderly and isolated manner to avoid collision and squeezing between the blades; the small cleaning basket 2 is designed with positioning stoppers, safety nets, movable handles, etc. to prevent the blades from being squeezed during the placement process and to prevent the blades from falling, which is convenient for loading and unloading and turnover; the cleaning device of the present application can fully contact the blades with the cleaning agent, and the carbon deposits cleaned can be dissolved in the cleaning agent in time, thereby improving the cleaning effect of the cleaning agent on the carbon deposits on the blade surface. At the same time, it can meet the needs of cleaning multiple stages of blades at one time, improve the cleaning efficiency and quality of compressor blades, and has significant economic benefits.

[0044] A cleaning method for a high-pressure compressor blade cleaning device is implemented based on the above device and specifically includes the following steps:

[0045] Step 1: Place the blades 206 one by one in the slots of the removable partition net 203 of the small cleaning basket 2, with a row of blades placed every other slot;

[0046] Step 2: Remove the removable door 102 of the large cleaning basket 1, and place the small cleaning basket 2 with the blades in the large cleaning basket 1, placing the bottom of a small cleaning basket 2 on the positioning stop 208 of another small cleaning basket. After placing the small cleaning baskets 2, install the removable door 102.

[0047] Step 3: Use a crane to lift the large cleaning basket 1 loaded with the small cleaning basket 2 to the lifting point 101 and place it in a water-based degreasing tank for degreasing;

[0048] Step 4: After degreasing, the large cleaning basket 1 loaded with the small cleaning basket 2 is hoisted to the lifting point 101 by a crane and placed in the rinsing tank for rinsing;

[0049] Step 5: After rinsing, the large cleaning basket 1 loaded with the small cleaning basket 2 is hoisted to the lifting point 101 by a crane and placed in the alkaline cleaning tank to remove carbon deposits;

[0050] Step 6: After removing the carbon deposits, the large cleaning basket 1 loaded with the small cleaning basket 2 is hoisted to the lifting point 101 by a crane and placed in the rinsing tank for rinsing;

[0051] Step 7: After rinsing, the large cleaning basket 1 loaded with the small cleaning basket 2 is hoisted to the lifting point 101 by a crane and placed in the manual cleaning area;

[0052] Step 8: Remove the removable door 102 on the large cleaning basket 1, manually take out the small cleaning basket 2, and check the surface cleaning quality of the blade 206. If it is clean, put the blade 206 in a drying box to dry, and then send it to the next process after drying; if the inspection finds that the cleaning is not clean, repeat the cleaning process of steps 3 to 7 until the blade 206 is clean.

Claims

1. A cleaning device for high pressure compressor blades, characterized in that: It includes a large cleaning basket and a small cleaning basket. Both the large cleaning basket and the small cleaning basket are hollow structures. Multiple small cleaning baskets are stacked in the large cleaning basket. The small cleaning basket includes a fixed outer basket. Safety nets are arranged on the bottom and around the fixed outer basket. A detachable partition net is hung on the side wall of the fixed outer basket. The detachable partition net includes a basic frame. Multiple support rods with the same intervals are arranged in the basic frame. Every two support rods form a slot. Blades are placed in the slot at intervals.

2. A cleaning device for high pressure compressor blades according to claim 1, characterized in that: A positioning rod is arranged on the side wall of the fixed outer basket, and the detachable partition net is hung on the positioning rod.

3. A cleaning device for high pressure compressor blades according to claim 1, characterized in that: The size of the large cleaning basket matches the size of the cleaning tank and can accommodate more than 10 small cleaning baskets.

4. A cleaning device for high pressure compressor blades according to claim 1, characterized in that: The top of the large cleaning basket is provided with a hanging point, and the side is provided with a detachable door.

5. The cleaning device for high pressure compressor blades according to claim 1, characterized in that: Positioning stops are arranged at the four corners of the top of the small cleaning basket, which are used for positioning the small cleaning baskets when they are stacked and preventing them from shaking during cleaning.

6. A cleaning device for high pressure compressor blades according to claim 1, characterized in that: The fixed outer basket is provided with a retractable handle, which includes a handle, a hook is provided at the bottom of the handle, and a fixing ring is provided on the fixed outer basket. The handle is stretched so that the hook of the handle is clamped on the fixing ring for extending the handle, and the handle is pushed so that the handle is clamped above the fixing ring for contracting the handle.

7. A cleaning device for high pressure compressor blades according to claim 1, characterized in that: A fixed handle is provided on the detachable partition net.

8. The cleaning device for high pressure compressor blades according to claim 1, characterized in that: The large cleaning basket, the fixed outer basket, the retractable handle, the basic frame, and the support rod are all made of stainless steel bars, and the outside of the stainless steel bars of the support rod is also wrapped with a Teflon tube.

9. A cleaning method for a high-pressure compressor blade cleaning device, based on the device according to claim 1, characterized in that: The specific steps include: Step 1: Place the leaves one by one in the slots of the removable mesh of the small cleaning basket, with a row of leaves placed every other slot; Step 2: Remove the removable door of the large cleaning basket, and place the small cleaning basket with the blades in the large cleaning basket. When placing, place the bottom of a small cleaning basket on the positioning stop of another small cleaning basket. After placing the small cleaning baskets, install the removable door; Step 3: Use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the water-based degreasing tank for degreasing; Step 4: After degreasing, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the rinsing tank for rinsing; Step 5: After rinsing, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the alkaline cleaning tank to remove carbon deposits; Step 6: After removing the carbon deposits, use a crane to lift the large cleaning basket with the small cleaning basket to the lifting point and place it in the rinsing tank for rinsing; Step 7: After rinsing, lift the large cleaning basket with the small cleaning basket to the lifting point with a crane and place it in the manual cleaning area; Step 8: Remove the removable door on the large cleaning basket, take out the small cleaning basket manually, and check the cleaning quality of the blade surface. If it is clean, put the blade in the drying box to dry, and then send it to the next process after drying; if the inspection finds that the cleaning is not clean, repeat the cleaning process of steps 3 to 7 until the blade is clean.

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