Adjustable water turbine generator set air supply valve overhauling device

Abstract

The application discloses an adjustable air supplement valve overhauling device of a hydroelectric generator unit, which comprises an overhauling device, a frame body supporting assembly, a movable jacking assembly connected with the frame body supporting assembly, and a jacking fixing assembly connected with the movable jacking assembly. The air supplement valve does not need to be completely disassembled during overhauling, only the jacking fixing assembly needs to be controlled to fix the four corners of the turned-over air supplement valve and to continue to adaptively jack the valve disc after being fixed and self-locked, and only the jacking fixing assembly needs to be simply controlled during the whole process, without extra operation and equipment and with reserved operation space, so that the staff can quickly overhaul and work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of maintenance technology for air supply valves of hydropower units, and in particular to an adjustable air supply valve maintenance device for hydropower generator units. Background Technology

[0002] Currently, large-scale hydro-generator air supply systems both domestically and internationally primarily utilize the central bore of the main shaft for air supply. This is achieved by leveraging the pressure difference between the tailrace pipe and the external atmosphere to open the air supply valve, allowing air to be introduced into the generator's tailrace pipe through the air supply pipe. Most air supply valves employ air compression buffer technology, using air as the buffer medium. A buffer check valve is installed on the buffer piston. When the vacuum level reaches the set value of the air supply valve, the valve opens. During the air supply process, the buffer check valve also opens, eliminating air supply resistance and achieving rapid air supply. When the air supply valve rebounds and closes, the buffer check valve closes, and the sealed air, after its buffering effect, is rapidly released. The valve body closes under the action of the spring force, achieving rapid opening, rapid return, and slow closure upon reaching the final position. Therefore, air supply is smooth, and the resistance to water hammer is strong. Most importantly, it provides timely and sufficient air supply, effectively improving cavitation and crack formation in the turbine runner cavity.

[0003] However, since this type of air-injection valve is directly connected to the generator set's tailrace pipe, the rated spring force needs to be adjusted and set inside the air-injection valve before it is put into operation. This ensures that the valve disc is in a normally closed state during normal generator set operation, ensuring reliable valve disc sealing and preventing backflow into the tailrace pipe, which could lead to a serious accident such as flooding of the power plant. Therefore, to ensure the safe operation of the generator set, the valve disc and its seal of the air-injection valve must be inspected, adjusted, and replaced during the maintenance of each generator set.

[0004] Due to the design and structure of the air-replenishing valve in large hydroelectric turbines, the valve disc is subjected to a reverse spring force in its original state. Therefore, during maintenance, it is necessary to overcome the spring force inside the air-replenishing valve for inspection, adjustment, and replacement. This means that the air-replenishing valve needs to be completely disassembled each time maintenance is performed to treat the main seal of the valve disc, greatly consuming manpower and the operating hours of the bridge crane. Furthermore, since the air-replenishing valve is part of the equipment connecting to the turbine's tailrace pipe, it occupies a significant portion of the main maintenance schedule for the generator sets. This seriously affects work efficiency and increases maintenance costs. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the above or prior art, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to provide an adjustable air supply valve maintenance device for hydro-generator sets, which can automatically lift the valve disc of the air supply valve after it is clamped and fixed, allowing for quick maintenance without completely disassembling the air supply valve.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adjustable hydro-generator set air supply valve maintenance device, which includes a maintenance device, including a frame support assembly, a movable lifting assembly that is plugged into the frame support assembly, and a lifting fixing assembly that is connected to the movable lifting assembly.

[0009] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the frame support assembly includes a base plate frame, an I-shaped operating frame disposed above the base plate frame, a support sleeve disposed above the I-shaped operating frame, four sets of extension plates disposed at the four corners of the support sleeve, an adjusting rod connected to the extension plate, a limiting plate sleeved with the top of the adjusting rod, a fixing plate fixedly connected to the top of the adjusting rod and in contact with the top of the limiting plate, four sets of tightening ports arranged in an array on the top of the support sleeve, and two sets of first lifting limiting ports disposed at both ends of the I-shaped operating frame.

[0010] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the movable lifting assembly includes a hollow collar fixedly connected to the middle of the I-shaped operating frame, multiple sets of second lifting limit ports arrayed on the hollow collar, limit lifting rods respectively inserted into the second lifting limit ports, a lifting plate fixedly connected to the top of the multiple sets of limit lifting rods, and a threaded lifting block connected to the bottom of the lifting plate.

[0011] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the lifting and fixing assembly includes a screw rod connected to a threaded lifting block, a first helical gear connected to the bottom of the screw rod, a second helical gear connected to the first helical gear, a hollow sleeve rod connected to one side of the second helical gear, through grooves symmetrically arranged on both sides of the hollow sleeve rod, a multi-segment operating rod with one end partially inserted into the through groove, a conical rotating cylinder connected to the multi-segment operating rod, a roller contacting the conical end of the conical rotating cylinder, a tightening long rod hinged to the roller, a coordinating ring connected to the top of the tightening long rod, three sets of tightening short rods spaced apart on the coordinating ring, and a support fixing frame arranged at the bottom of the frame support assembly and movably connected to the screw rod and the hollow sleeve rod respectively.

[0012] The multi-stage operating lever includes a bidirectional extended insertion head, a smooth thin rod connected to the bidirectional extended insertion head, and a threaded rod connected to the smooth thin rod.

[0013] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the conical rotating cylinder includes a conical head and a cylinder connected to the extended end of the conical head.

[0014] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the support fixing frame includes an F-type positioning plate, a threaded opening disposed on one side of the F-type positioning plate, and a support plate disposed below the threaded opening.

[0015] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the three sets of short clamping rods and the long clamping rods correspond one-to-one with the four sets of clamping ports.

[0016] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, a stop block is provided in the middle of the threaded opening and the threaded rod.

[0017] As a preferred embodiment of the adjustable hydro-generator set air supply valve maintenance device of the present invention, the conical rotating drum further includes a weight reduction groove disposed at its end.

[0018] The beneficial effects of this invention are as follows: During maintenance, the air replenishment valve does not need to be completely disassembled. The invention only requires controlling the lifting and fixing components to fix the four corners of the air replenishment valve after it has been flipped over. After the fixing is self-locked, the valve disc of the air replenishment valve can continue to be self-adaptively lifted. The entire process only requires simple control of the lifting and fixing components. No extra operations or equipment are required, and operating space is reserved, which facilitates quick maintenance by the staff and improves work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram illustrating the application scenario of the adjustable air supply valve maintenance device for a hydro-generator set.

[0021] Figure 2 This is a schematic diagram of the overall structure of the adjustable air supply valve maintenance device for a hydro-generator set.

[0022] Figure 3 Another perspective schematic diagram of the overall structure of the adjustable hydro-generator set air supply valve maintenance device.

[0023] Figure 4 This is a partially enlarged schematic diagram of the maintenance device for the adjustable air supply valve of a hydro-generator unit.

[0024] Figure 5 This is a partial, omitted schematic diagram of the maintenance device for the adjustable air supply valve of a hydro-generator unit. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0028] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides an adjustable air supply valve maintenance device for hydro-generator sets, which can automatically lift the valve disc of the air supply valve after the air supply valve is clamped and fixed, and can quickly maintain the air supply valve without completely disassembling it.

[0029] Specifically, the maintenance device 100 includes a frame support assembly 101, a movable lifting assembly 102 that is plugged into the frame support assembly 101, and a lifting fixing assembly 103 that is connected to the movable lifting assembly 102.

[0030] Furthermore, the frame support assembly 101 includes a base plate frame 101a, an I-shaped operating frame 101b disposed above the base plate frame 101a, a support sleeve 101c disposed above the I-shaped operating frame 101b, four sets of extension plates 101d respectively disposed at the four corners of the support sleeve 101c, an adjusting rod 101e connected to the extension plate 101d, a limiting plate 101f sleeved on the top of the adjusting rod 101e, a fixing plate 101g fixedly connected to the top of the adjusting rod 101e and in contact with the top of the limiting plate 101f, four sets of tightening ports 101h arrayed on the top of the support sleeve 101c, and two sets of first lifting limiting ports 101i disposed at both ends of the I-shaped operating frame 101b.

[0031] It should be noted that the I-shaped operating frame 101b has operating space on both sides to facilitate maintenance and repair by staff.

[0032] Furthermore, the movable lifting assembly 102 includes a hollow collar 102a fixedly connected to the middle of the I-shaped operating frame 101b, multiple sets of second lifting limit ports 102b arrayed on the hollow collar 102a, limit lifting rods 102c respectively inserted into the second lifting limit ports 102b, a lifting plate 102d fixedly connected to the top of the multiple sets of limit lifting rods 102c, and a threaded lifting block 102e connected to the bottom of the lifting plate 102d.

[0033] Furthermore, the lifting and fixing assembly 103 includes a lead screw 103a connected to the threaded lifting block 102e, a first helical gear 103b connected to the bottom of the lead screw 103a, a second helical gear 103c connected to the first helical gear 103b, a hollow sleeve rod 103d connected to one side of the second helical gear 103c, through grooves 103e symmetrically arranged on both sides of the hollow sleeve rod 103d, a multi-segment operating rod 103f with one end partially inserted into the through groove 103e, and a multi-segment operating rod 103f connected to the threaded lifting block 102e. The segment operating lever 103f connects to a conical rotating cylinder 103g, a roller 103h that contacts the conical end of the conical rotating cylinder 103g, a top-tightening long rod 103i that is hinged to the roller 103h, a coordinating ring 103j that is connected to the top of the top-tightening long rod 103i, three sets of top-tightening short rods 103k that are spaced apart on the coordinating ring 103j, and a support fixing frame 103l that is located at the bottom of the frame support assembly 101 and is movably connected to the lead screw 103a and the hollow sleeve rod 103d respectively.

[0034] The multi-segment operating lever 103f includes a bidirectional extended insertion head 103f-1, a smooth thin rod 103f-2 connected to the bidirectional extended insertion head 103f-1, and a threaded rod 103f-3 connected to the smooth thin rod 103f-2.

[0035] It should be noted that the diameter of the smooth thin rod 103f-2 is smaller than the diameter of the threaded opening 103l-2. The cylinder 103g-2 is supported by the support plate 103l-3, thereby maintaining the smooth thin rod 103f-2 at a certain height and located at the center of the threaded opening 103l-2. The two ends of the bidirectional extended insert head 103f-1 extend outward from the through groove 103e.

[0036] Furthermore, the conical rotating cylinder 103g includes a conical head 103g-1 and a cylinder 103g-2 connected to the extended end of the conical head 103g-1.

[0037] Furthermore, the support fixing frame 103l includes an F-type positioning plate 103l-1, a threaded opening 103l-2 disposed on one side of the F-type positioning plate 103l-1, and a support plate 103l-3 disposed below the threaded opening 103l-2. The three sets of tightening short rods 103k and the tightening long rods 103i correspond one-to-one with the four sets of tightening openings 101h. The threaded opening 103l-2 is adapted to the threaded rod 103f-3.

[0038] Preferably, a stop block 103i-1 is provided in the middle of the clamping long rod 103i, which can maintain the initial height of the clamping long rod 103i. The conical rotating cylinder 103g also includes a weight-reducing groove 103g-3 provided at its end. The tops of the three sets of clamping short rods 103k and the clamping long rod 103i are all provided with clamping friction pads to increase the clamping force by increasing friction.

[0039] When using it, you need to manually rotate the limiting plates 101f at the four corners of the support sleeve 101c to the outside at a certain angle. Then, flip the air supply valve and insert it into the frame support assembly 101. The support sleeve 101c will support the air supply valve. Then, restore the four sets of limiting plates 101f to the position shown in the figure, so that the bottom of the limiting plate 101f is above the surface of the air supply valve.

[0040] Next, the air supply valve needs to be fixed by the lifting and fixing component 103 and the valve disc at the bottom of the air supply valve needs to be lifted to overcome the spring force inside the air supply valve and lift the valve disc in the opposite direction, so as to ensure that the air supply valve disc is in the open state and facilitate the maintenance of the air supply valve.

[0041] During this process, there is no need for staff to climb the frame support assembly 101. The staff only need to push the conical rotating cylinder 103g on one side of the bottom of the frame support assembly 101, so that the smooth thin rod 103f-2 at one end of the conical rotating cylinder 103g gradually slides into the threaded port 103l-2 on one side of the F-type positioning plate 103l-1. When sliding in, the roller 103h will drive the tightening long rod 103i to move upward along the gradually increasing height direction of the conical head 103g-1, so that the coordinating ring 103j drives the three sets of tightening short rods 103k to move upward and enter the four sets of tightening ports 101h respectively. After the smooth thin rod 103f-2 has completely slid into the threaded opening 103l-2, the threaded rod 103f-3 will contact the threaded opening 103l-2. Then, the operator rotates the cylinder 103g-2, causing the threaded rod 103f-3 to screw into the threaded opening 103l-2 a certain distance, thereby causing the roller 103h to disengage from the conical head 103g-1 and fall onto the surface of the cylinder 103g-2, stopping the rotation of the cylinder 103g-2. At this time, the three sets of clamping short rods 103k and clamping long rods 1 03i fully enters the four sets of tightening ports 101h and contacts the lower surface of the air supply valve, and cooperates with the four sets of limiting plates 101f. The air supply valve is tightened by the limiting of both. Since the threaded rod 103f-3 at one end of the cylinder 103g-2 is self-locking to the threaded port 103l-2, the stability of the tightening is guaranteed. The four corners of the air supply valve are tightened and fixed. After the cylinder 103g-2 is stopped from rotating, the staff can inspect the outside of the air supply valve and try to move the air supply valve to test whether the fixation is stable.

[0042] Next, when the staff needs to inspect, adjust, or replace the valve disc and its seal of the air replenishment valve, they only need to continue controlling the rotation of the cylinder 103g-2, so that the threaded rod 103f-3 continues to screw into the threaded opening 103l-2. Since the bidirectional extended insertion rod head 103f-1 at one end of the multi-segment operating rod 103f is inserted into the hollow sleeve rod 103d, and both ends of the bidirectional extended insertion rod head 103f-1 extend outward and protrude beyond the through groove 103e, when the cylinder 103g-2 is rotated, the conical rotating cylinder 103g and the multi-segment operating rod 103f both rotate forward, so that the bidirectional extended insertion rod head 103f-1 gradually enters into the hollow sleeve rod 103d and controls the rotation of the hollow sleeve rod 103d. When the conical rotating cylinder 103g moves as a whole, the roller 103h moves relative to the cylinder 103g-2, thereby maintaining the clamping and fixing height and ensuring the stability of the fixation.

[0043] When the hollow sleeve rod 103d rotates, it causes the second helical gear 103c at one end to rotate and the first helical gear 103b to rotate, thereby driving the lead screw 103a to rotate. Since the threaded lifting block 102e is connected to the lead screw 103a, the lifting plate 102d, which is fixedly connected to the threaded lifting block 102e, is limited by the limiting lifting rods 102c on both sides and can only move up and down. Therefore, when the lead screw 103a rotates, it controls the threaded lifting block 102e to gradually rise, so that the lifting plate 102d lifts the valve plate of the air replenishing valve. It can be stopped when it is lifted to a suitable height or any height. It is kept stable by the self-locking of the threaded rod 103f-3 and the threaded opening 103l-2. The threaded connection of the two can simultaneously ensure the fixation of the air replenishing valve and the stability of the lifting valve plate. Thus, the operator only needs to fix the air replenishing valve with the lifting fixing component 103 before lifting the valve plate, and ensure the stability of the air replenishing valve during lifting. No extra manpower is required, which improves work efficiency.

[0044] In summary, during maintenance, it is not necessary to completely disassemble the air supply valve. It is only necessary to control the lifting and fixing components to fix the four corners of the air supply valve after it has been flipped over. After the fixing is self-locked, the valve disc of the air supply valve can continue to be self-adaptively lifted. The entire process only requires simple control of the lifting and fixing components. No extra operations or equipment are required, and operating space is reserved, which facilitates quick maintenance by the staff and improves work efficiency.

[0045] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0046] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0047] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An adjustable air supply valve maintenance device for a hydro-generator set, characterized in that: include, The maintenance device (100) includes a frame support assembly (101), a movable lifting assembly (102) that is plugged into the frame support assembly (101), and a lifting fixing assembly (103) that is connected to the movable lifting assembly (102). The lifting and fixing assembly (103) includes a lead screw (103a) connected to the threaded lifting block (102e), a first helical gear (103b) connected to the bottom of the lead screw (103a), a second helical gear (103c) connected to the first helical gear (103b), a hollow sleeve rod (103d) connected to one side of the second helical gear (103c), through slots (103e) symmetrically arranged on both sides of the hollow sleeve rod (103d), a multi-segment operating rod (103f) with one end partially inserted into the through slot (103e), and a multi-segment operating rod. (103f) is connected to a conical rotating cylinder (103g), a roller (103h) that contacts the conical end of the conical rotating cylinder (103g), a top-tightening long rod (103i) that is hinged to the roller (103h), a coordinating ring (103j) that is connected to the top of the top-tightening long rod (103i), three sets of top-tightening short rods (103k) that are spaced apart on the coordinating ring (103j), and a support fixing frame (103l) that is set at the bottom of the frame support assembly (101) and is movably connected to the lead screw (103a) and the hollow sleeve rod (103d) respectively. The support frame (103l) includes an F-type positioning plate (103l-1), a threaded opening (103l-2) disposed on one side of the F-type positioning plate (103l-1), and a support plate (103l-3) disposed below the threaded opening (103l-2); the multi-segment operating rod (103f) includes a bidirectional extended insertion rod head (103f-1), a smooth thin rod (103f-2) connected to the bidirectional extended insertion rod head (103f-1), and a threaded rod (103f-3) connected to the smooth thin rod (103f-2); The conical rotating cylinder (103g) includes a conical head (103g-1) and a cylinder (103g-2) connected to the extended end of the conical head (103g-1). The frame support assembly (101) includes a base plate frame (101a), an I-shaped operating frame (101b) disposed above the base plate frame (101a), a support sleeve frame (101c) disposed above the I-shaped operating frame (101b), four sets of extension plates (101d) respectively disposed at the four corners of the support sleeve frame (101c), an adjusting rod (101e) connected to the extension plate (101d), a limiting plate (101f) sleeved on the top of the adjusting rod (101e), a fixing plate (101g) fixedly connected to the top of the adjusting rod (101e) and in contact with the top of the limiting plate (101f), four sets of tightening ports (101h) arrayed on the top of the support sleeve frame (101c), and two sets of first lifting limiting ports (101i) disposed at both ends of the I-shaped operating frame (101b). The worker only needs to push the conical rotating cylinder (103g) on ​​one side of the bottom of the frame support assembly (101), so that the smooth thin rod (103f-2) at one end of the conical rotating cylinder (103g) gradually slides into the threaded opening (103l-2) on one side of the F-type positioning plate (103l-1). When sliding in, the roller (103h) will drive the clamping long rod (103i) to move upward along the gradually increasing height direction of the conical head (103g-1), so that the coordinating ring (103j) drives the three sets of clamping short rods (103k) to move upward and enter the four sets of clamping openings (101h) respectively; when the smooth thin rod (103f-2) is completely slid into the threaded opening (103l-2) After that, the threaded rod (103f-3) will come into contact with the threaded opening (103l-2). Then, the operator rotates the cylinder (103g-2) so that the threaded rod (103f-3) is screwed into the threaded opening (103l-2) a certain distance, so that the roller (103h) is disengaged from the conical head (103g-1) and falls on the surface of the cylinder (103g-2). The rotation of the cylinder (103g-2) stops. At this time, the three sets of clamping short rods (103k) and clamping long rods (103i) are fully inserted into the four sets of clamping ports (101h) and come into contact with the lower surface of the air supply valve and cooperate with the four sets of limiting plates (101f). The air supply valve is clamped by the limiting of the two.

2. The adjustable hydro-generator set air supply valve maintenance device as described in claim 1, characterized in that: The movable lifting assembly (102) includes a hollow collar (102a) fixedly connected to the middle of the I-shaped operating frame (101b), multiple sets of second lifting limit ports (102b) arrayed on the hollow collar (102a), limit lifting rods (102c) respectively inserted into the second lifting limit ports (102b), a lifting plate (102d) fixedly connected to the top of the multiple sets of limit lifting rods (102c), and a threaded lifting block (102e) connected to the bottom of the lifting plate (102d).

3. The adjustable hydro-generator set air supply valve maintenance device as described in claim 2, characterized in that: The three sets of tightening short rods (103k) and the three sets of tightening long rods (103i) correspond one-to-one with the four sets of tightening ports (101h).

4. The adjustable hydro-generator set air supply valve maintenance device as described in claim 3, characterized in that: The threaded opening (103l-2) is adapted to the threaded rod (103f-3).

5. The adjustable hydro-generator set air supply valve maintenance device as described in claim 4, characterized in that: A stop block (103i-1) is provided in the middle of the clamping rod (103i).

6. The adjustable hydro-generator set air supply valve maintenance device as described in claim 5, characterized in that: The conical rotating cylinder (103g) also includes a weight reduction groove (103g-3) located at its end.

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