Method for cleaning blade root groove of turbine wheel disc of gas turbine
By designing a device that includes a grooved plate, a cleaning cloth, a squeegee ring, and a syringe, the problem of low cleaning efficiency of the turbine blade root groove of a gas turbine was solved, achieving efficient cleaning and accurate detection.
Patent Information
- Application Number
- CN202511339228.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2025-11-18
AI Technical Summary
In the existing technology, the cleaning methods for the root grooves of gas turbine disk blades are inefficient and easily leave dirt and dust, affecting the detection sensitivity.
A device is used, comprising a trough plate, a cleaning cloth, a squeegee ring, a syringe, and a water injection pipe. The cleaning liquid is injected through the syringe, the cleaning cloth cleans the leaf root trough, and the squeegee ring intermittently presses out the contaminated liquid to achieve efficient cleaning.
It improves the cleaning efficiency and quality of the leaf root groove, ensures the accuracy of detection, and avoids the residue of dirt and dust.
Smart Images
Figure CN120961480A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a kind of turbine disc blade root slot cleaning methods. BACKGROUND
[0002] Turbine disc blade root slot is one of important components of gas turbine, because withstand turbine blade torque and centrifugal force, and high temperature gas erosion such as severe condition, its working environment is extremely bad.Therefore, effective nondestructive testing is carried out to turbine disc blade root slot, and it is an important means to ensure the safe and stable operation of gas turbine.
[0003] Currently, the surface of blade root slot needs to be kept clean before detection to ensure the detection quality.In the prior art, the surface of blade root slot is usually cleaned by a detection personnel holding a cloth and inserting it into the blade root slot.This not only affects the detection efficiency, but also leaves residues such as dirt and dust, thereby affecting the detection sensitivity. SUMMARY
[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a turbine disc blade root slot cleaning method.
[0005] The above-mentioned purpose is achieved by the following technical solutions: A turbine disc blade root slot cleaning method, the method comprising the following steps: (1) First, adjust the speed head of the second syringe dropper to open the dropper, then press the push rod of the second syringe to inject the cleaning liquid into the water distribution box through the dropper, then through each water injection pipe into the water inlet head of the slot plate, and then into the cleaning cotton cloth, so that the cleaning cotton cloth contains cleaning liquid; (2) Then, adjust the speed head of the second syringe dropper to close the dropper, then hold the square rod section of the hand-held rod, put the device into the blade root slot of the turbine disc, push the device to move, and the cleaning cotton cloth will clean the blade root slot; (3) After cleaning for a period of time, the device can be intermittently taken out of the turbine disc blade root slot, the water scraping ring is pulled by the hand-held pull ring, the contaminated cleaning liquid in the cleaning cotton cloth is pressed out by the water scraping ring, then the speed head of the first syringe dropper is adjusted to open the first syringe dropper, the push rod of the first syringe is pushed to press the water into the water distribution box through the dropper, then the water is injected into the cleaning cotton cloth through each water injection pipe, so that the cleaning cotton cloth is filled with water, and then the water scraping pipe is reciprocally pulled to clean the cleaning cotton cloth; (4) After cleaning, the speed head of the first syringe dropper is closed, the speed head of the second syringe dropper is opened, the cleaning liquid of the second syringe is continuously pushed into the cleaning cotton cloth, then the speed head of the second syringe dropper is closed to close the dropper, and the device is continuously put into the blade root slot to clean the blade root slot.
[0006] The cleaning method of the turbine disc blade root groove, the outer surface of the groove plate is bonded with a layer of cleaning cotton cloth, the front and rear ends of the inner part of the groove plate are respectively fixed with back plates, and the back plates are fixed with handheld rods; A water scraping ring is sleeved on the groove plate, a connecting plate is fixed on the water scraping ring, a pull ring is fixed on the connecting plate, and the pull ring is sleeved on the handheld rod; A base is fixed on the handheld rod, two syringes are fixed on the base, the droppers of the two syringes are connected to a water distribution box, a plurality of water injection pipes are connected to the water distribution box, and the water injection pipes are connected to different parts of the groove plate.
[0007] The cleaning method of the turbine disc blade root groove, the base comprises a bottom plate, and the bottom plate is fixed with two rib plates.
[0008] The cleaning method of the turbine disc blade root groove, the handheld rod comprises a round rod section and a square rod section. Advantages
[0009] 1. The device is matched with the shape of the blade root groove, and the device can be inserted into the blade root groove to clean the blade root groove, so that the cleaning effect is guaranteed.
[0010] 2. The syringes are provided with cleaning liquid, the cleaning liquid is distributed through the water distribution box, and then distributed to the plurality of water injection pipes, so that the cleaning liquid is distributed to different parts of the cleaning cotton cloth, and the cleaning effect of the blade root groove is guaranteed.
[0011] 3. The water scraping ring can intermittently take out the device from the turbine disc blade root groove, and the pull ring is pulled by hand to press out the contaminated cleaning liquid in the cleaning cotton cloth, so that the cleaning efficiency and quality are improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a top view of the present application; Figure 2 is a front view of the present application; Figure 3 is Figure 1 a B-B sectional view of Figure 4 is Figure 1 an enlarged view of A part of Figure 5 is Figure 1 an enlarged view of C part of Figure 6 is a top view of the water scraping ring; Figure 7 is a front view of the wiper ring; Figure 8 is a front view of the wiper ring in use; Figure 9 is a top view of the wiper ring in use; Figure: 1, wiper ring; 2, connecting plate; 3, rib plate; 4, syringe; 5, round rod section; 6, back plate; 7, cleaning cotton cloth; 8, slot plate; 9, pull ring; 10, water injection pipe; 11, water distribution box; 12, square rod section; 13, bottom plate; 14, dropper; 15, speed regulating head; 16, first syringe; 17, second syringe; 18, turbine disc; 19, blade root slot; 20, water inlet head. DETAILED DESCRIPTION
[0013] Reference Figures 1-7 A turbine disc blade root slot cleaning method, the method comprising the following steps: (1) First, adjust the speed regulating head of the second syringe dropper so that the dropper is open, then press the push rod of the second syringe to inject the cleaning liquid into the water distribution box through the dropper, then through each water injection pipe into the water inlet head of the slot plate, and then into the cleaning cotton cloth, so that the cleaning cotton cloth contains cleaning liquid; (2) Then adjust the speed regulating head of the second syringe dropper so that the dropper is closed, then hold the square rod section of the hand-held rod and place the device into the turbine disc blade root slot, push the device to move, and the cleaning cotton cloth will clean the turbine disc blade root slot; (3) After a period of cleaning, the device can be intermittently removed from the turbine disc blade root slot, the wiper ring is pulled by the pull ring, the contaminated cleaning liquid in the cleaning cotton cloth is pressed out by the wiper ring, then the speed regulating head of the first syringe dropper is adjusted to open the first syringe dropper, the push rod of the first syringe is pushed to inject water into the water distribution box through the dropper, then through each water injection pipe into the cleaning cotton cloth, so that the cleaning cotton cloth is filled with water, and then the wiper pipe is reciprocally pulled to clean the cleaning cotton cloth; (4) After cleaning, the speed regulating head of the first syringe dropper is closed, the speed regulating head of the second syringe dropper is opened, the cleaning liquid of the second syringe is continuously pushed into the cleaning cotton cloth, then the speed regulating head of the second syringe dropper is closed to close the dropper, and the device is continuously placed into the turbine disc blade root slot to clean the turbine disc blade root slot.
[0014] A turbine wheel disc blade root groove cleaning method, which comprises a groove plate 8 matched with the shape of the turbine wheel disc blade root groove, the outer surface of the groove plate is bonded with a layer of cleaning cotton cloth 7, the cleaning cotton cloth should have a certain loft, and the thickness of the cleaning cotton cloth should be not less than the gap between the groove plate and the inner wall of the turbine wheel disc blade root groove, so that the gap between the cleaning cloth and the inner wall of the turbine wheel disc blade root groove can be avoided to affect the cleaning quality, the front and rear ends of the inside of the groove plate are respectively fixed with back plates 6, the back plates are fixed with hand-held rods, the hand-held rods comprise a round rod section 5 and a square rod section 12, the round rod section is fixed with the back plate, and the wiper ring pull ring is sleeved on the round rod section, the pull ring is a three-quarter circular ring structure; The groove plate is sleeved with a wiper ring 1, the shape of the wiper ring is also matched with the shape of the turbine wheel disc blade root groove, but the width of the wiper ring is less than the gap between the groove plate and the inner wall of the turbine wheel disc blade root groove, so that the device can be pulled in the blade root groove without affecting the cleaning, the wiper ring is fixed with a connecting plate 2, the connecting plate is fixed with a pull ring 9, and the pull ring is sleeved on the hand-held rod; The hand-held rod is fixed with a base, the base is fixed with two syringes, the two syringes are a first syringe 16 and a second syringe 17, the first syringe is filled with water, and the second syringe is filled with cleaning liquid, the drip tubes 14 of the two syringes are connected to a water distribution box 11, the drip tubes are sleeved with speed regulating heads 15, the speed regulating heads are the same as the speed regulating heads of hospital drip, and play the role of valves, the water distribution box is connected with a plurality of water injection pipes 10, the water injection pipes are connected to different parts of the groove plate, the water injection pipes are two groups on the left and right sides, each group has 4-6 pipes, one end of each water injection pipe is connected to the water outlet head of the water distribution box, and the other end is inserted into the water inlet head of the groove plate, the plurality of water inlet heads on the groove plate are distributed on different concave and convex surfaces, so that the water injection pipes can be completely distributed in the area of the cleaning cotton cloth, and the water and the cleaning liquid can be injected into different parts of the cleaning cotton cloth; The base comprises a bottom plate 13, and the bottom plate is fixed with two rib plates 3.
[0015] Working principle: refer to Figures 8-9In use, first adjust the speed head of the second syringe dropper to open the dropper, then press the plunger of the second syringe to inject the cleaning liquid into the water distribution box through the dropper, then through the water injection pipes into the water inlet head 20, then into the cleaning cloth, so that the cleaning cloth is filled with cleaning liquid, then adjust the speed head of the second syringe dropper to close the dropper, then hold the square rod section of the handle rod, put the device into the blade root groove 19 of the turbine disc 18, push the device to move, the cleaning cloth will clean the blade root groove, after cleaning for a period of time, the device can be intermittently taken out of the turbine disc blade root groove, pull the wiper ring by the handle pull ring, so that the wiper ring press out the contaminated cleaning liquid in the cleaning cloth, then adjust the speed head of the first syringe dropper to open the first syringe dropper, press the plunger of the first syringe to inject water into the water distribution box through the dropper, then through the water injection pipes into the cleaning cloth, so that the cleaning cloth is filled with water, then reciprocally pull the wiper pipe to clean the cleaning cloth, after cleaning, close the speed head of the first syringe dropper, open the speed head of the second syringe dropper, continue to push the cleaning liquid of the second syringe into the cleaning cloth, then close the speed head of the second syringe dropper to close the dropper, continue to put the device into the blade root groove to clean the blade root groove.
Claims
1. A method for cleaning the root grooves of a gas turbine rotor blade, characterized in that: The method includes the following steps: (1) First, adjust the speed control head of the second syringe dropper to open the dropper, then press the plunger of the second syringe to inject the cleaning solution into the water distribution box through the dropper, and then enter through the water inlet head of the groove plate through each water injection pipe, and then seep into the cleaning cotton cloth so that the cleaning cotton cloth contains cleaning solution. (2) Then adjust the speed control head of the second syringe dropper to close the dropper, then hold the square rod section of the hand lever and put the device into the blade root groove of the turbine wheel. Push the device to move, and the cleaning cloth will clean the blade root groove. (3) After cleaning for a period of time, the device can be removed from the turbine wheel blade root groove intermittently. The water scraper ring is pulled by hand to make the water scraper ring squeeze out the contaminated cleaning fluid from the cleaning cloth. Then, the speed control head on the first syringe dropper is adjusted to open the first syringe dropper. The push rod of the first syringe is pushed to make the water flow into the water distribution box through the dropper. Then, the water is injected into the cleaning cloth through each water injection pipe to fill the cleaning cloth with water. Then, the water scraper pipe is pulled back and forth to clean the cleaning cloth. (4) After cleaning, close the speed control head of the first syringe dropper, open the speed control head of the second syringe dropper, continue to push the cleaning solution of the second syringe into the cleaning cotton cloth, then close the speed control head of the second syringe dropper to close the dropper, and continue to put the device into the leaf root groove to clean the leaf root groove.
2. The method for cleaning the root grooves of a gas turbine disk blade according to claim 1, characterized in that: A layer of cleaning cotton cloth is bonded to the outer surface of the grooved plate, and a back plate is fixed to the front and rear ends of the inner side of the grooved plate, and the back plate is fixed to the hand handle. A wiper ring is fitted onto the grooved plate, a connecting plate is fixed onto the wiper ring, a pull ring is fixed onto the connecting plate, and the pull ring is fitted onto the handle. A base is fixed to the handheld handle, and two syringes are fixed to the base. The droppers of the two syringes are connected to the water distribution box. Multiple water injection pipes are connected to the water distribution box and are connected to different parts of the trough plate.
3. The method for cleaning the root grooves of a gas turbine disk blade according to claim 2, characterized in that: The base includes a base plate, on which two ribs are fixed.
4. The method for cleaning the root grooves of a gas turbine disk blade according to claim 3, characterized in that: The handheld handle includes round and square sections.