Method for dismounting and transporting a runner of a pelton turbine

Abstract

The application discloses a method for dismounting and transporting an impulse water turbine runner, and belongs to the technical field of water turbine equipment. The method adopts a two-stage dismounting mode of a hydraulic force amplifier and a hand-operated hoist. In the first stage, the hydraulic force amplifier is used to separate the impulse runner from a main shaft and to dismount the first stage, so that the installation space of the hand-operated hoist is obtained. In the second stage, the hand-operated hoist is used to separate the hydraulic force amplifier from the impulse runner and to dismount the second stage, so that the dismounting and transporting of the large-scale impulse water turbine runner are realized. The method does not need to change the water turbine main shaft, reduces the requirement of the dismounting conditions, and can realize the dismounting of the impulse runner under the small repair condition, so that the quick repair of the runner and the quick replacement of the standby runner are ensured, the repair period is greatly shortened, the operation difficulty is reduced, and the work efficiency is improved. The method has simple principles, is easy to implement, and has good popularization and application values.

Description

Technical Field

[0001] This invention belongs to the technical field of water turbine equipment, specifically relating to a method for dismantling and transporting the runner of an impulse water turbine. Background Technology

[0002] Impulse turbines are widely used in high-head power stations, and the bucket runner is its core component. During operation, the bucket runner often withstands the enormous impact force of high-speed, sediment-laden water flow, making it prone to wear, cavitation, and cracking. Its maintenance cycle is generally shorter than other turbine types. Furthermore, unlike other reaction turbines, the impulse turbine runner is exposed to the air when the unit is shut down. This eliminates the need for complete unit disassembly during major overhauls, allowing for inspection and maintenance within the runner chamber. This enables the replacement of spare runners, nozzles, and spray needles, shortening maintenance time and improving power station efficiency. With the development of hydropower, the weight of a single impulse turbine runner may exceed 100 tons, increasing the risk of turbine failure. Therefore, it is necessary to consider and research unconventional maintenance methods. Due to the large runner weight, limited space above the runner, and difficulty in installing large-tonnage lifting lugs, the technical challenges of disassembling and transporting the impulse turbine runner will be significantly increased.

[0003] Currently, methods for dismantling large impulse turbine runners have been proposed. For example, Chinese patent CN202110930410 discloses a method for dismantling an impulse runner. This method connects the servo piston to the main shaft and the servo cylinder to the runner. By using pressurized oil to raise or lower the servo cylinder, the runner moves, causing it to slide naturally to the lowest point or the highest point, thus achieving the dismantling and installation of the runner and realizing the dismantling of the impulse runner. However, this method has certain drawbacks, specifically: First, implementation... The above method requires the following conditions: First, the turbine main shaft lower flange must have an inner flange to fix the servo piston, which needs to bear the weight of the servo and the runner during disassembly. However, the main shaft is generally a hollow structure, making it difficult to meet this condition. Second, a long screw is required during disassembly to connect the runner and maintain its position as the servo passes through it. The addition of a long screw not only increases the difficulty of disassembly and assembly but also increases costs. Third, the connection between the servo piston, cylinder, runner, and main shaft is complex and requires multiple pressurization and depressurization processes, making the entire disassembly process complicated.

[0004] It is evident that the existing method for dismantling the runner of an impulse turbine requires modifications to the turbine's main shaft and necessitates the use of a long screw, resulting in high requirements for dismantling conditions and complex procedures. Summary of the Invention

[0005] The purpose of this invention is to provide a method for dismantling and transporting the runner of an impulse turbine, in order to solve the technical problems of existing methods for dismantling the runner of an impulse turbine, which require modifications to the turbine's main shaft and the use of long screws, and have high requirements for dismantling conditions and complex procedures.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for dismantling and transporting an impulse turbine runner, including the dismantling and transport process:

[0008] S1: Secure the hydraulic relay to the transport vehicle so that the hydraulic relay is located directly below the impact wheel;

[0009] S2: Pressurize the rodless chamber of the hydraulic servo drive to raise the piston rod to the lower end face of the impact wheel; connect the piston rod support flange to the impact wheel with bolts; continue to pressurize the rodless chamber of the hydraulic servo drive until the pressure value is greater than the total weight of the impact wheel, piston rod and piston rod support flange;

[0010] S3: Separate the impulse runner from the turbine's main shaft;

[0011] S4: Guide rods are evenly distributed around the spindle and the impact wheel, while oil is drained from the rodless chamber of the hydraulic servo and oil is replenished to the rod chamber of the hydraulic servo, so that the impact wheel descends along the guide rods to the fully closed position of the piston rod.

[0012] S5: Install spindle end lifting lug bolts on the lower end face of the spindle, suspend the hand chain hoist on the spindle end lifting lug bolts, and fix the hand chain hoist to the upper end face of the impact wheel through the wheel end lifting lug bolts;

[0013] S6: Separate the impact wheel from the piston rod support flange, and simultaneously pull the impact wheel up to the preset height using a hand chain hoist;

[0014] S7: Use a transport vehicle to move the hydraulic relay out; move the transport vehicle directly under the impact wheel, use a chain hoist to lower the impact wheel onto the transport vehicle, and then use the transport vehicle to move the impact wheel out of the wheel chamber.

[0015] Furthermore, in S1, the transport vehicle is pre-arranged on a transport track located below the impact wheel, and the transport track is I-shaped.

[0016] Furthermore, the pressure-bearing weight of the hydraulic relay is at least 1.5 times that of the impact wheel.

[0017] Furthermore, the specific steps of S3 are as follows:

[0018] Using a hydraulic tensioner or hydraulic wrench, loosen the bolts connecting the impact impeller and the main shaft of the turbine symmetrically, and then disassemble them separately to separate the impact impeller from the main shaft.

[0019] Furthermore, in S4, three guide rods are installed circumferentially on the main shaft and the impact wheel.

[0020] Furthermore, in S6, a hand-operated hoist is used to pull the impact wheel up to 18-22cm.

[0021] Furthermore, the manual chain hoist is an electric hoist.

[0022] Furthermore, before removing the impact wheel, several lifting lug holes are pre-drilled on the upper end face of the impact wheel and several lifting lug holes are pre-drilled on the lower end face of the impact wheel.

[0023] Furthermore, the means of transportation is an electric vehicle.

[0024] Furthermore, it also includes a wheel reloading process, which is executed in the reverse order of the unloading and transportation processes.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This invention provides a method for dismantling and transporting an impulse turbine runner. The method employs a two-stage dismantling approach using a hydraulic jack and a hand-operated hoist. The first stage uses the hydraulic jack to separate the impulse runner from the main shaft and perform the first-stage dismantling, creating space for the hand-operated hoist. The second stage uses the hand-operated hoist to separate the hydraulic jack from the impulse runner and perform the second-stage dismantling, thus enabling the dismantling and transport of the large impulse turbine runner. This method requires no modification to the turbine main shaft, reducing the requirements for dismantling. It allows for the dismantling of the impulse runner even under minor repair conditions, ensuring rapid runner maintenance and replacement with a spare runner, significantly shortening the maintenance period, reducing operational difficulty, and improving work efficiency. The method is simple in principle, easy to implement, and has good application value.

[0027] Preferably, in this invention, the use of a transport vehicle pre-arranged on a transport track ensures accurate and stable movement during the removal of the rotating wheel, thereby improving the accuracy and safety of the operation.

[0028] Preferably, in this invention, the hydraulic relay is designed to have a bearing capacity at least 1.5 times that of the impact wheel, so that the bearing capacity of the hydraulic relay exceeds the weight of the wheel, ensuring that the wheel can be stably supported and moved during operation, and preventing safety accidents caused by insufficient load-bearing capacity.

[0029] Preferably, in this invention, the separation of the main shaft and the impact wheel is achieved by symmetrical loosening and disassembling one by one, which ensures the accuracy and safety of the operation and avoids equipment damage caused by improper disassembly.

[0030] Preferably, in this invention, the guide rod enables the wheel to remain stable during descent, preventing safety accidents caused by shaking and improving operational accuracy.

[0031] Preferably, in this invention, by precisely controlling the lifting height of the hand chain hoist, i.e., 18-22cm, preferably 20cm, the wheel can be safely and stably separated from the piston rod support flange, avoiding operational errors caused by improper height control.

[0032] Preferably, in this invention, an electric hoist can be used to replace a manual hoist. The use of an electric hoist increases the degree of automation of the operation, reduces the difficulty and labor intensity of manual operation, and at the same time improves work efficiency and safety.

[0033] Preferably, in this invention, the impact wheel, through the setting of the lifting lug hole, can be easily fixed and moved by the lifting tool during the dismantling of the wheel, thereby improving the convenience and safety of operation.

[0034] Preferably, in this invention, the electric vehicle, as a means of transportation, is flexible and efficient, and can quickly and accurately transport the wheel out of the wheel chamber, thereby improving work efficiency.

[0035] Preferably, the present invention also includes a wheel reinstallation process, providing clear wheel reinstallation instructions to ensure the accuracy and safety of the reinstallation process, while avoiding equipment damage or safety accidents caused by improper operation. Attached Figure Description

[0036] Figure 1 A flowchart illustrating a method for dismantling and transporting an impulse turbine runner, as provided in an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram showing the connection between the impact wheel and the hydraulic relay provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the first section of the impact wheel being disassembled according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram showing the connection between the impact wheel and the hand chain hoist provided in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the second section of the impact wheel being disassembled according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of an impact-type rotating wheel being placed flat on an electric vehicle according to an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of an impact-type rotary conveyor provided in an embodiment of the present invention;

[0043] Figure 8 A schematic diagram of an impact wheel provided in an embodiment of the present invention; wherein, (a) is a side view; and (b) is a top view.

[0044] Figure label:

[0045] 1-Main shaft, 2-Impact wheel, 3-Hydraulic relay, 4-Piston rod support flange, 5-Electric vehicle, 6-Transport track, 7-Wheel chamber door, 8-Guide rod, 9-Hand chain hoist, 10-Main shaft end lifting lug bolt, 11-Wheel end lifting lug bolt, 12-Support, 13-Hook;

[0046] 1-1- Bolt connecting the impeller and the main shaft; 1-2- Bolt hole on the main shaft flange; 1-3- Lifting lug hole on the main shaft flange; 2-1- Bolt hole on the impeller; 2-2- Lifting lug hole on the upper end face of the impeller; 2-3- Lifting lug hole on the lower end face of the impeller; 3-1- Piston rod; 3-2- Upper end cover of the hydraulic cylinder; 3-3- Piston; 3-4- Bolt on the upper end cover of the hydraulic cylinder; 3-5- Hydraulic cylinder; 3-6- Connecting bolt for the lower end cover of the servo drive; 3-7- Bolt connecting the lower end cover of the servo drive to the vehicle; 3-8- Lower end cover of the servo drive; 3-9- Inlet and outlet oil pipes for the rod chamber of the servo drive; 3-10- Inlet and outlet oil pipes for the rodless chamber of the servo drive; 4-1- Connecting bolt for the piston rod support flange; 5-1: Wheel; 5-2: Motor. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0048] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0049] Example 1

[0050] As mentioned in the background section, the current method for dismantling the runner of an impulse turbine has certain limitations, specifically: First, the implementation of this method requires that the turbine main shaft lower flange has an inner flange for fixing the servo piston, which needs to bear the weight of the servo and the runner during dismantling. However, the main shaft is generally a hollow structure, making it difficult to meet this condition. Second, a long screw is required during dismantling to connect the runner and maintain its position as the servo passes through it. The addition of a long screw not only increases the difficulty of dismantling but also increases costs. Third, the connection between the servo piston, cylinder, runner, and main shaft is complex and requires multiple pressurization and depressurization cycles, making the entire dismantling process complicated.

[0051] To address the aforementioned issues, this embodiment provides a method for dismantling and transporting an impact turbine runner. It utilizes a hydraulic relay and a hand-operated hoist for this process, requiring no modifications to the turbine's main shaft and eliminating the need for a long screw. Only one oil filling and draining process is required with the relay. The method is safe and efficient, enabling the efficient and rapid dismantling, reassembly, and transport of large impact turbine runners within the runner chamber.

[0052] like Figure 1 As shown in the figure, this embodiment provides a method for dismantling and transporting the runner of an impulse turbine, which specifically includes the following steps:

[0053] S1: Fix the hydraulic relay 3 to the electric vehicle 5 so that the hydraulic relay 3 is located directly below the impact wheel 2.

[0054] S2: Pressurize the rodless chamber of the hydraulic servo drive 3 so that the piston rod 3-1 rises to the lower end face of the impact wheel 2; connect the piston rod support flange 4 to the impact wheel 2 with bolts; continue to pressurize the rodless chamber of the hydraulic servo drive 3 until the pressure value is greater than the total weight of the impact wheel 2, piston rod 3-1 and piston rod support flange 4.

[0055] S3: Separate the impact runner 2 from the main shaft 1 of the water turbine.

[0056] S4: Guide rods 8 are evenly distributed around the main shaft 1 and the impact wheel 2. At the same time, oil is drained from the rodless chamber of the hydraulic servo 3 and oil is replenished to the rod chamber of the hydraulic servo 3, so that the impact wheel 2 descends along the guide rods 8 to the fully closed position of the piston rod 3-1.

[0057] S5: Install spindle end lifting lug bolt 10 on the lower end face of spindle 1, suspend hand chain hoist 9 on spindle end lifting lug bolt 10, and fix hand chain hoist 9 to the upper end face of impact wheel 2 through wheel end lifting lug bolt 11.

[0058] S6: Separate the impact wheel 2 from the piston rod support flange 4, and simultaneously pull the impact wheel 2 up to the preset height using a hand chain hoist.

[0059] S7: Use electric vehicle 5 to move hydraulic relay 3 out; move electric vehicle 5 directly under impact wheel 2, use hand chain hoist 9 to lower impact wheel 2 onto electric vehicle 5 and have electric vehicle 5 transport impact wheel 2 out of wheel chamber.

[0060] Among them, electric vehicle 5 is used as a means of transportation. Electric vehicle 5 includes wheels 5-1 and motor 5-2. Electric vehicle 5 has the advantages of high mobility and flexibility.

[0061] Example 2

[0062] This embodiment, based on Embodiment 1, provides a more detailed explanation and description of the method for dismantling and transporting the impulse turbine runner involved in this invention. The specific steps are as follows:

[0063] Step S1: Fix the hydraulic relay 3 to the center of the electric vehicle 5. Transport the electric vehicle 5 and relay 3 through the pre-arranged transport track 6 via the wheel chamber door 7 to the impact-type wheel chamber water-stabilizing grid, located directly below the impact-type wheel 2. Then lock the electric vehicle 5 onto the track. In this embodiment, the preferred solution is as follows:

[0064] First, the transport track 6 adopts an I-shaped track, and the load-bearing capacity of the water stabilization grid and the track must meet the load-bearing requirements of the wheel and disassembly tools.

[0065] Second, the hydraulic relay 3 is selected to bear the weight of the impact wheel 2, which is more than 1.5 times its own weight. The hydraulic cylinder of the hydraulic relay 3 is preferably 80cm in diameter and 10MPa in rated pressure.

[0066] Third, the piston end of the hydraulic relay 3 is equipped with a piston rod support flange 4, and the piston rod support flange 4 has bolt holes, the positions of which correspond to the lifting lug holes 2-3 on the lower end face of the impact wheel 2.

[0067] Fourth, the hydraulic relay 3 consists of a cylinder 3-5, a piston rod 3-1, a piston 3-3, an upper cylinder cover 3-2, a lower relay cover 3-8, rod chamber inlet and outlet oil pipes 3-9, and rodless chamber inlet and outlet oil pipes 3-10. In the design, with the piston retracted into the cylinder, the total height of the relay 3 and the electric vehicle 5 is 2.2 meters. Simultaneously, it must be ensured that when the piston extension is less than 95%, the upper end face of the piston rod support flange 4 at the end of piston 3-3 reaches the lower end face of the impact wheel 2.

[0068] Step S2: As Figure 2As shown, the rodless chamber of the hydraulic servo drive 3 is pressurized, causing the piston rod 3-1 to rise to the lower end face of the impact wheel 2. The piston rod support flange 4 is then connected to the impact wheel 2 via the piston rod support flange connecting bolt 4-1. After connection, the rodless chamber of the servo drive is further pressurized through the servo drive's rodless chamber inlet / outlet oil pipe 3-10. The pressure value is greater than the total weight of the wheel, piston rod, and connecting flange, approximately 8.0 MPa. In this embodiment, the preferred solution is as follows:

[0069] First, such as Figure 8 As shown in Figures (a) and (b), a ring of evenly distributed bolt holes matching the piston rod support flange 4 is provided within the area of ​​the impact wheel 3. Generally, there are 8 threaded holes, of which 4 are the lower end face lifting lug holes 2-3 for lowering the wheel, and 4 are the upper end face lifting lug holes 2-1 for raising the wheel. The diameter of the threaded holes and the bolt material meet the stress requirements.

[0070] Second, when installing the piston rod support flange connecting bolts 4-1, maintain the stability of the hydraulic pressure of the hydraulic relay 3.

[0071] Step S3: As Figure 3 As shown, by using a hydraulic tensioner or hydraulic wrench, the connecting bolts 1-1 between the impact runner 2 and the main shaft 1 of the water turbine are loosened symmetrically, and then disassembled separately to separate the impact runner 2 from the main shaft 1 of the water turbine.

[0072] Step S4: As Figure 4 As shown, three guide rods 8 are installed on the three evenly distributed main shaft flange bolt holes 1-2 of the turbine main shaft 1 and the impact runner 2. At the same time, the rodless chamber of the servo motor is drained and depressurized with a small opening through the oil inlet and outlet pipes 3-10 of the rodless chamber of the servo motor. Meanwhile, the rod chamber of the servo motor is replenished with oil through the oil inlet and outlet pipes 3-9 of the rod chamber of the servo motor, so that the impact runner 2 slowly descends to the fully closed position of the servo motor piston rod.

[0073] Step S5: As Figure 5 As shown, spindle end lifting lug bolts 10 are symmetrically installed at the spindle flange lifting lug holes 1-3, and four large-tonnage 25-ton hand chain hoists 9 are suspended. The other end of the hand chain hoist 9 is connected to four wheel end lifting lug bolts 11 at the wheel bolt hole 2-1. The wheel end lifting lug bolts 11 are installed on the lifting lug hole 2-1 on the upper end face of the wheel.

[0074] Here, as a preferred embodiment, an electric hoist can be used to replace the manual hoist. The use of an electric hoist increases the degree of automation of the operation, reduces the difficulty and labor intensity of manual operation, and at the same time improves work efficiency and safety.

[0075] Step S6: As Figure 6As shown, remove the bolts 4-1 connecting the impact wheel 2 and the piston rod support flange, thus separating the impact wheel 2 from the piston rod support flange. Simultaneously, use a hand chain hoist 9 to lift the impact wheel 2 to a certain height, approximately 20cm.

[0076] Step S7: As Figure 7 As shown, the electric vehicle 5 and the hydraulic relay 3 are moved out of the wheel chamber, and the hydraulic relay 3 is lifted away from the electric vehicle 5; then the electric vehicle 5 is moved to the bottom of the wheel again, and the hand chain hoist 9 is used to lower the impact wheel 2 onto the support 12 of the electric vehicle 5, and the impact wheel 2 is transported out of the wheel chamber. The impact wheel 2 is then transferred to the installation room by the hook (13) of the factory bridge crane.

[0077] Step S8: This also includes the wheel reinstallation process, in which the method of reinstalling the new wheel or the repaired wheel is performed in reverse order of the disassembly and transportation process, so as to achieve wheel reinstallation.

[0078] Therefore, this embodiment provides a method for dismantling and transporting the runner of an impulse turbine, which has the following advantages:

[0079] (1) The method for removing the impeller of the present invention can remove the impeller under minor repair conditions, realize the quick repair or replacement of the impeller, and greatly shorten the repair period.

[0080] (2) The present invention adopts a two-stage disassembly method of hydraulic relay + hand chain hoist to realize the disassembly of large impact turbine runner. At the same time, this method only requires setting 4 or 8 threaded lifting holes on the runner, without modifying the turbine main shaft lower flange, and without setting a large tonnage lifting lug on the top of the runner chamber.

[0081] (3) During the dismantling process of this invention, the stability of the wheel in the first stage of descent is ensured by the cooperation of the hydraulic relay and the long guide screw. At the same time, the descent space of the relay can be used to install a flexible hand chain hoist to perform the second stage of descent of the wheel. The whole process is simple to operate and does not require repeated movement of large tools such as the relay, thus reducing safety risks.

[0082] (4) This invention utilizes a two-stage dismantling method of hydraulic relay + hand chain hoist, which greatly reduces the intensity of manual labor by using hydraulic operation and electric trolley transportation, and is applicable to different wheel heights and different door heights.

[0083] In summary, this invention provides a method for dismantling and transporting the runner of an impulse turbine, which has the following advantages compared to existing dismantling methods:

[0084] This invention provides a comprehensive, systematic, and detailed method for dismantling and transporting an impulse turbine runner, ensuring safety and efficiency during the process. Firstly, precise step design and tool selection reduce operational risks and improve reliability. Secondly, the use of a hydraulic relay for stable runner support and lifting ensures safety and controllability during dismantling. Thirdly, the method of symmetrically loosening and dismantling bolts one by one avoids equipment damage or accidents caused by uneven stress. The use of guide rods ensures the stability of the runner during descent, preventing accidental swaying. Fourthly, precise control of the pull-up height ensures smooth separation of the runner from the support flange. The entire method not only focuses on the dismantling and transportation process but also considers equipment protection and maintenance, extending the equipment's service life. This method ensures safety and efficiency during runner dismantling and transportation, possessing practical value and potential for wider application.

[0085] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0086] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and the disclosed concept of the present invention, should be covered within the scope of protection of the present invention.

[0087] The further detailed description provided in this publication should not be construed as limiting the specific embodiments of the present invention to this extent. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered as falling within the scope of protection of the present invention as defined by the submitted claims.

Claims

1. A method for dismantling and transporting the runner of an impulse turbine, characterized in that, Including the dismantling and transportation process: S1: Fix the hydraulic relay (3) to the transport vehicle so that the hydraulic relay (3) is located directly below the impact wheel (2); S2: Pressurize the rodless chamber of the hydraulic servo (3) to raise the piston rod (3-1) to the lower end face of the impact wheel (2); connect the piston rod support flange (4) to the impact wheel (2) with bolts; continue to pressurize the rodless chamber of the hydraulic servo (3) until the pressure value is greater than the total weight of the impact wheel (2), piston rod (3-1) and piston rod support flange (4); S3: Separate the impact runner (2) from the turbine's main shaft (1); S4: Guide rods (8) are evenly distributed around the main shaft (1) and the impact wheel (2), while draining oil from the rodless chamber of the hydraulic servo (3) and replenishing oil to the rod chamber of the hydraulic servo (3), so that the impact wheel (2) descends along the guide rods (8) to the fully closed position of the piston rod (3-1). S5: Install spindle end lifting lug bolts (10) on the lower end face of the spindle (1), suspend the hand chain hoist (9) on the spindle end lifting lug bolts (10), and fix the hand chain hoist (9) to the upper end face of the impact wheel (2) through the wheel end lifting lug bolts (11); S6: Separate the impact wheel (2) from the piston rod support flange (4), and at the same time pull the impact wheel (2) up to the preset height using a hand chain hoist; S7: Use a transport vehicle to move the hydraulic relay (3) out; move the transport vehicle directly under the impact wheel (2), use a hand chain hoist (9) to lower the impact wheel (2) onto the transport vehicle and have the transport vehicle carry the impact wheel (2) out of the wheel chamber.

2. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, In S1, the transport vehicle is pre-arranged on the transport track (6) located below the impact wheel (2), and the transport track (6) is I-shaped.

3. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, The pressure-bearing weight of the hydraulic relay (3) is at least 1.5 times that of the impact wheel (2).

4. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, The specific steps for S3 are as follows: Using a hydraulic tensioner or hydraulic wrench, loosen the connecting bolts (1-1) between the impact impeller (2) and the main shaft (1) of the turbine symmetrically, and then disassemble them separately to separate the impact impeller (2) from the main shaft (1).

5. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, In S4, three guide rods (8) are installed circumferentially on the main shaft (1) and the impact wheel (2).

6. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, In S6, the impact wheel (2) is pulled up to 18-22cm using a hand chain hoist (9).

7. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, The hand chain hoist (9) is an electric hoist.

8. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, Before removing the impact wheel (2), several upper end face lifting holes (2-2) are pre-made on the upper end face of the impact wheel (2), and several lower end face lifting holes (2-3) are pre-made on the lower end face of the impact wheel (2).

9. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, The means of transportation is an electric vehicle (5).

10. The method for dismantling and transporting an impulse turbine runner according to claim 1, characterized in that, It also includes a wheel reloading process, which is executed in the reverse order of the unloading and transportation processes.

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