Pressure regulating equipment for pumped storage power station

Abstract

The utility model provides pumped storage power station pressure adjusting equipment which comprises a pipe body of an adjusting valve, an executing mechanism used for executing pressure adjustment in the pipe body is detachably installed above the pipe body, a flange plate is integrally arranged on the upper surface of the pipe body, and a connecting plate used for installing the executing mechanism is arranged above the flange plate. The outer diameter of the connecting disc is the same as that of the flange plate, the connecting disc and the flange plate are coaxially arranged up and down to form sealing contact, and a set of clamping connecting assembly is arranged between the left side and the right side of the outer portion of the flange plate so as to achieve fixed connection with the connecting disc. The supporting plate is provided with a dismounting and mounting operation mechanism used for synchronously controlling the two clamping and connecting assemblies so as to clamp and fix the flange plate and the connecting plate together, and the dismounting and mounting operation mechanism is connected with the two clamping and connecting assemblies. The mechanical clamping design of the clamping and connecting assembly is adopted, rapid disassembly and assembly of the executing mechanism can be achieved, and the operation convenience of equipment is remarkably improved.

Description

Technical Field

[0001] This application relates to the technical field of pressure regulation, and particularly to a pressure regulation device for a pumped-storage power station. Background Art

[0002] A pumped-storage power station is a special type of hydroelectric power plant, which mainly consists of an upper reservoir, a lower reservoir, a water conveyance system, a powerhouse, and a switchyard, etc. During the operation of the pumped-storage power station, the pressure of water changes very violently. These pressure changes may exceed the bearing capacity of equipment such as pipelines and water turbines, resulting in serious consequences such as pipeline rupture and water turbine damage, endangering the safe operation of the power station. Generally, an electric pressure regulating valve is installed to regulate the pressure of the pipeline to ensure the normal operation of the pumped-storage power station.

[0003] In the prior art, some electric pressure regulating valves are composed of an electric actuator and a regulating valve body. The electric actuator is generally installed on the pipe body of the regulating valve through multiple groups of bolts. During the installation or disassembly process, it is necessary to use tools to repeatedly rotate multiple groups of bolts, and the process is relatively troublesome. Therefore, a pressure regulation device for a pumped-storage power station is proposed to solve the above problems. Utility Model Content

[0004] To make up for the above deficiencies, this application provides a pressure regulation device for a pumped-storage power station, aiming to improve the problem that the electric actuator used in some pressure regulation devices of pumped-storage power stations is relatively troublesome to disassemble and assemble.

[0005] To achieve the above objective, this application adopts the following technical solutions:

[0006] A pressure regulation device for a pumped-storage power station includes the pipe body of a regulating valve. An actuator for performing pressure regulation inside the pipe body is detachably installed above the pipe body. The output end of the actuator is located inside the pipe body and is connected to the regulating valve body inside the pipe body. A flange is integrally provided on the upper surface of the pipe body. A connection plate for installing the actuator is provided above the flange. The connection plate and the flange have the same outer diameter and are coaxially arranged up and down to form a sealed contact. A set of clamping connection components are respectively arranged between the left and right sides outside the flange. The flange is fixedly connected to the connection plate through the clamping connection components. A support plate arranged horizontally left and right is fixedly provided at a position in front of the upper part of the pipe body. An assembly and disassembly operation mechanism for synchronously controlling the two sets of clamping connection components to clamp and fix the flange and the connection plate together is arranged on the support plate. The assembly and disassembly operation mechanism is connected to the two sets of clamping connection components.

[0007] In an alternative embodiment, the disassembly and assembly operating mechanism includes a bidirectional threaded rod rotatably disposed inside the top end of the support plate with one end extending outside the support plate. The length direction of the bidirectional threaded rod is consistent with the length direction of the support plate. A set of the clamping connection assemblies are respectively connected to the threaded sections at the left and right ends of the bidirectional threaded rod. When the bidirectional threaded rod rotates, the two sets of clamping connection assemblies can move closer to or away from the flange and the connection plate. When the two sets of clamping connection assemblies gradually move closer to the flange and the connection plate, the flange and the connection plate can be clamped and locked together by the clamping connection assemblies.

[0008] In an alternative embodiment, the clamping connection assembly includes a connecting rod, a first clamping plate, a second clamping plate, a bottom plate and an arc-shaped connecting bar;

[0009] One end of the connecting rod is provided with a threaded hole and is threadedly connected to the threaded section at one end of the bidirectional threaded rod through the threaded hole. The other end of the connecting rod is fixedly connected with the bottom plate above. On the outer side of the upper surface of the bottom plate, there is a erected first clamping plate. On the upper surface of the bottom plate, there is also a sliding groove located on the inner side of the first clamping plate. The inner wall of the sliding groove is slidably connected with a vertical sliding column. The bottom end of the sliding column is connected with the arc-shaped connecting bar. The other end of the arc-shaped connecting bar is fixedly connected with the second clamping plate above. When the connecting rod moves closer to the flange and the connection plate, the first clamping plate can move accordingly and synchronously drive the second clamping plate to move. The inner sides of the first clamping plate and the second clamping plate have arc-shaped surface structures capable of fitting the circumferential sides of the flange and the connection plate. The second clamping plate is spaced 90° from the first clamping plate. The two first clamping plates and the two second clamping plates of the two sets of clamping connection assemblies are distributed in the front, back, left and right four directions of the flange and the connection plate. The upper surface of the bottom plate is flush with the lower surface of the flange. The inner side tops of the first clamping plate and the second clamping plate are respectively provided with a first insertion post and the second insertion post. The first insertion post and the second insertion post have the same height. Four sets of slots are opened on the circumferential side of the connection plate. The four slots respectively correspond to the front, back, left and right four directions of the circumferential side of the connection plate. The four slots can be inserted by the first insertion post and the second insertion post when the first clamping plate and the second clamping plate move towards the connection plate.

[0010] In an alternative embodiment, the disassembly and assembly operating mechanism further includes a limiting mechanism for restricting the rotation of the bidirectional threaded rod and a pull ring connected to the limiting mechanism. The limiting mechanism is connected to one end of the bidirectional threaded rod extending out of the support plate and can lock the bidirectional threaded rod. The pull ring is connected to the outer end of the limiting mechanism and can release the locking of the limiting mechanism on the bidirectional threaded rod when pulled in a direction away from the bidirectional threaded rod.

[0011] In an alternative embodiment, the limiting mechanism includes a limiting ring, a limiting block, a sliding rod, and a spring;

[0012] The limiting ring is arranged at one end of the bidirectional threaded rod extending out of the support plate and is fixedly connected to the support plate. One end of the bidirectional threaded rod extending out of the support plate passes through the limiting ring, and a slideway extending to the outside along the length direction is formed in this end. The inner wall of the limiting ring is slidably connected with the limiting block that is radially restricted from rotating in the limiting ring and is located outside the end of the bidirectional threaded rod. The pull ring is arranged at the end of the limiting block away from the bidirectional threaded rod. The other end of the limiting block is fixedly connected with the sliding rod located in the slideway. The sliding rod is slidably connected to the slideway and is radially restricted from rotating in the slideway. A spring is fixedly connected between the sliding rod and the inner bottom end of the slideway.

[0013] In an alternative embodiment, a slider is arranged on the rod body of the sliding rod near one end of the spring, and a limiting groove for restricting the slider to slide only along the length direction on the inner wall of the slideway is arranged on the inner wall of the slideway.

[0014] In an alternative embodiment, the actuating mechanism includes a control box, a transmission shaft, and a fixed rod. A motor is arranged in the control box. The output shaft of the motor is connected to the transmission shaft vertically arranged below the control box. The lower end of the transmission shaft extends into the connection disk and is connected to the regulating valve body in the pipe body through the flange disk. The bottom end of the control box is fixedly connected with the fixed rod, and the other end of the fixed rod is fixedly connected with the connection disk.

[0015] In an alternative embodiment, the limiting ring is axially provided with a sliding hole for slidably connecting the limiting block. The outer shape of the limiting block is adapted to the sliding hole, and the sliding hole is a regular hexagon structure.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The present application provides a pressure regulating device for a pumped-storage power station. An actuator for performing pressure regulation inside the pipe body is detachably installed above the pipe body of the regulating valve. By integrally providing a flange on the upper surface of the pipe body and providing a connection plate for installing the actuator above the flange, the outer diameters of the connection plate and the flange are the same and they are coaxially arranged up and down to form a sealed contact. A set of clamping connection components are respectively arranged between the left and right sides outside the flange. With this design of the sealed contact between the flange and the connection plate and the mechanical clamping of the clamping connection components, the quick disassembly and assembly of the actuator can be realized. Compared with the traditional bolt connection method, the pressure regulating device for the pumped-storage power station of the present application simplifies the operation process, reduces the disassembly and assembly time, and significantly improves the operation convenience of the device. The present application respectively arranges a set of clamping connection components between the left and right sides outside the flange, so as to realize the stable connection between the flange and the connection plate, enhance the reliability of the device during use, and avoid leakage problems caused by bolt loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a pressure regulating device for a pumped-storage power station provided by an embodiment of the present application;

[0020] Figure 2 It is a partial split cross-sectional schematic diagram of a pressure regulating device for a pumped-storage power station provided by an embodiment of the present application;

[0021] Figure 3 In the present application Figure 2 is an enlarged schematic diagram of the three-dimensional structure of area A;

[0022] Figure 4 It is a schematic structural diagram of a clamping connection component provided by an embodiment of the present application;

[0023] Figure 5 It is a schematic structural diagram of a disassembly and assembly operation mechanism provided by an embodiment of the present application;

[0024] Figure 6 It is a schematic structural diagram of a limiting mechanism provided by an embodiment of the present application.

[0025] Legend Explanation:

[0026] 1. Pipe body; 11. Flange; 12. Connection plate; 121. Slot; 2. Actuator; 21. Control box; 22. Transmission shaft; 23. Fixed rod; 3. Clamping connection assembly; 31. Connecting rod; 311. Screw hole; 32. First clamping plate; 321. First insertion post; 33. Second clamping plate; 331. Second insertion post; 34. Base plate; 341. Chute; 342. Slide post; 35. Arc-shaped connection bar; 4. Support plate; 5. Disassembly and assembly operation mechanism; 51. Bidirectional threaded rod; 511. Slideway; 52. Limiting mechanism; 521. Limiting ring; 5211. Slide hole; 522. Limiting block; 523. Slide rod; 5231. Slide block; 524. Spring; 53. Pull ring; 6. Bearing. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts also belong to the scope of protection of the present application.

[0028] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0029] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] In a pumped-storage power station, the pressure regulating equipment is a key component to ensure the safe operation of the system. Usually, this type of equipment is used to control the pressure inside the pipeline to prevent excessive pressure from damaging the equipment and the system. Existing pressure regulating equipment mostly adopts traditional fixing methods, such as bolt connection methods to fixedly install the actuator on the tank body. This connection method relying on bolts is complex and time-consuming during frequent disassembly, assembly or maintenance, and is not convenient enough. Moreover, in practical applications, it is easy to affect the normal use of the equipment due to bolt loosening. To solve the above problems, the present application provides the following solutions.

[0032] Figure 1 It is a schematic structural diagram of the pressure regulating equipment for a pumped-storage power station provided by an embodiment of the present application; Figure 2 It is a partial split cross-sectional schematic diagram of the pressure regulating equipment for a pumped-storage power station provided by an embodiment of the present application; Figure 3 In the present application Figure 2 An enlarged schematic diagram of the three-dimensional structure of area A; Figure 4 It is a schematic structural diagram of the clamping connection assembly provided by an embodiment of the present application; Figure 5 It is a schematic structural diagram of the disassembly and assembly operating mechanism provided by an embodiment of the present application; Figure 6 It is a schematic structural diagram of the limiting mechanism provided by an embodiment of the present application. Referring to Figures 1 - 3 , an embodiment of the present application provides a pressure regulating equipment for a pumped-storage power station, including the pipe body 1 of the regulating valve. Above the pipe body 1, an actuator 2 for performing pressure regulation inside the pipe body is detachably installed. The output end of the actuator 2 is located inside the pipe body 1 and is connected to the regulating valve body inside the pipe body 1. A flange 11 is integrally provided on the upper surface of the pipe body 1. Above the flange 11, a connection plate 12 for installing the actuator 2 is provided. The connection plate 12 has the same outer diameter as the flange 11 and is arranged coaxially up and down to form a sealing contact. A set of clamping connection assemblies 3 are respectively arranged between the left and right sides outside the flange 11. The flange 11 is fixedly connected to the connection plate 12 through the clamping connection assemblies 3. A support plate 4 arranged horizontally left and right is fixedly provided at the front position above the pipe body 1. On the support plate 4, a disassembly and assembly operating mechanism 5 for synchronously controlling the two groups of clamping connection assemblies 3 to clamp and fix the flange 11 and the connection plate 12 together is provided. The disassembly and assembly operating mechanism 5 is connected to the two groups of clamping connection assemblies 3.

[0033] The pressure regulating equipment of traditional pumped-storage power stations is mostly fixed by bolts or welding, which not only complicates the operation but also increases the maintenance difficulty. The pressure regulating equipment of the pumped-storage power station provided by the embodiment of the present application detachably installs an actuator 2 for regulating the pressure inside the pipe body above the pipe body 1 of the regulating valve. By integrally arranging a flange 11 on the upper surface of the pipe body 1 and arranging a connection plate 12 for installing the actuator 2 above the flange 11, the connection plate 12 has the same outer diameter as the flange 11 and is coaxially arranged up and down to form a sealed contact. A set of clamping connection components 3 are respectively arranged between the left and right sides outside the flange 11. With this design of the sealed contact between the flange 11 and the connection plate 12 and the mechanical clamping of the clamping connection components 3, the quick disassembly and assembly of the actuator 2 can be realized. Compared with the traditional bolt connection method, the pressure regulating equipment of the pumped-storage power station in the embodiment of the present application simplifies the operation process, reduces the disassembly and assembly time, and significantly improves the operation convenience of the equipment. In the embodiment of the present application, a set of clamping connection components 3 are respectively arranged between the left and right sides outside the flange 11, so as to realize the stable connection between the flange 11 and the connection plate 12, enhance the reliability of the equipment during use, and avoid leakage problems caused by bolt loosening.

[0034] In some embodiments, as Figure 2 and Figure 3 shown, the disassembly and assembly operating mechanism 5 includes a bidirectional threaded rod 51, which is rotatably arranged inside the top end of the support plate 4 and one end extends outside the support plate 4. The length direction of the bidirectional threaded rod 51 is the same as the length direction of the support plate 4. A set of clamping connection components 3 are respectively connected to the threaded sections at the left and right ends of the bidirectional threaded rod 51. The two sets of clamping connection components 3 can move closer to or away from the flange 11 and the connection plate 12 when the bidirectional threaded rod 51 rotates. When the two sets of clamping connection components 3 gradually move closer to the flange 11 and the connection plate 12, the flange 11 and the connection plate 12 can be clamped and locked together. Optionally, a bearing 6 is fixedly arranged inside the top end of the support plate 4 at the middle position corresponding to the length of the bidirectional threaded rod 51. The bidirectional threaded rod 51 passes through the bearing 6, and the middle position of the bidirectional threaded rod 51 is connected to the inner ring of the bearing 6. Using the bearing 6 fixed inside the top of the support plate 4 to connect with the middle position of the bidirectional threaded rod 51 can not only make the rotation of the bidirectional threaded rod 51 easier, but also the inner ring of the bearing 6 is fixedly connected to the bidirectional threaded rod 51, so that the bidirectional threaded rod 51 will not move along the length direction inside the top end of the support plate 4 no matter how it rotates.

[0035] In the traditional method, the bolt connection used requires fastening each bolt one by one, with complex and time-consuming operations. In this embodiment, the disassembly and assembly operating mechanism 5 adopts a double-threaded rod design, enabling the operator to synchronously adjust all clamping points by simply rotating one rod body, greatly improving the installation and disassembly efficiency. At the same time, the design of the double-threaded rod 51 ensures the stability of the clamping connection in the use environment, avoiding the risk of loosening of the connecting parts during the operation. Moreover, during the use process, the user can complete the entire clamping process with a single operation, reducing the error probability. This design significantly reduces the complexity of the operation and is particularly suitable for application scenarios with high requirements for disassembly and assembly efficiency.

[0036] Referring to Figures 2 - 4 , in some embodiments, the clamping connection assembly 3 includes a connecting rod 31, a first clamping plate 32, a second clamping plate 33, a bottom plate 34, and an arc-shaped connecting strip 35.

[0037] One end of the connecting rod 31 is provided with a threaded hole 311 and this end is threadedly connected to the threaded section on one end of the double-threaded rod 51 through the threaded hole 311. Above the other end of the connecting rod 31, a bottom plate 34 is fixedly connected. On the outer side of the upper surface of the bottom plate 34, a vertically erected first clamping plate 32 is provided. A chute 341 located on the inner side of the first clamping plate 32 is also opened on the upper surface of the bottom plate 34. A vertical sliding column 342 is slidably connected to the inner wall of the chute 341. To ensure that the end of the connecting rod 31 with the threaded hole 311 can be connected to the threaded section of the double-threaded rod 51 inside the support plate 4, a through hole for the connecting rod 31 to penetrate into the support plate 4 is opened at a position corresponding to the threaded section of the double-threaded rod 51 on the inner side of the support plate 4.

[0038] Referring to Figures 3 - 4, the bottom end of the sliding column 342 is connected to an arc-shaped connecting bar 35, and a second clamping plate 33 is fixedly connected above the other end of the arc-shaped connecting bar 35. The chute 341 is set at a certain slope to ensure that when the first clamping plate 32 moves, the sliding column 342 will move along the sloped chute 341, driving the arc-shaped connecting bar 35 to move, and thus driving the second clamping plate 33 to move. The length of the sliding column 342 can be set in such a way that it does not exceed the uppermost end of the chute 341, so that the top end of the sliding column 342 is slidably connected in the chute 341 without being disengaged from the chute 341 vertically; the length of the sliding column 342 can also be set in such a way that it exceeds the uppermost end of the chute 341. In this case, the part of the sliding column 342 located in the chute 341 is slidably connected to the chute 341, and the part of the sliding column 342 extending beyond the uppermost end of the chute 341 is set with a size larger than the width of the chute 341. In this way, the radial dimension of the part of the sliding column 342 extending beyond the uppermost end of the chute 341 is larger than the radial dimension of the part of the sliding column 342 located in the chute 341. In this situation, a slot for the top end of the sliding column 342 to move is correspondingly opened on the lower side of the flange 11 facing the first clamping plate 32. When the connecting rod 31 moves closer to the flange 11 and the connecting plate 12, the first clamping plate 32 can move accordingly and synchronously drive the second clamping plate 33 to move. The inner sides of the first clamping plate 32 and the second clamping plate 33 have an arc-shaped surface structure that can fit the circumferential sides of the flange 11 and the connecting plate 12. The second clamping plate 33 is spaced 90° from the first clamping plate 32. The two first clamping plates 32 and the two second clamping plates 33 of the two clamping and connecting assemblies 3 are distributed in the front, back, left, and right four directions of the flange 11 and the connecting plate 12. The upper surface of the bottom plate 34 is flush with the lower surface of the flange 11. The tops of the inner sides of the first clamping plate 32 and the second clamping plate 33 are respectively provided with a first insertion post 321 and a second insertion post 331. The heights of the first insertion post 321 and the second insertion post 331 are the same. Four groups of slots 121 are opened on the circumferential side of the connecting plate 12. The four groups of slots 121 respectively correspond to the front, back, left, and right four directions of the circumferential side of the connecting plate 12. The four groups of slots 121 can be inserted by the first insertion post 321 and the second insertion post 331 when the first clamping plate 32 and the second clamping plate 33 move towards the connecting plate 12. In this embodiment, the first insertion post 321 and the second insertion post 331 are both adapted to the shape of the slot 121, so as to ensure the stability of the limit.

[0039] In this embodiment, each clamping connection component 3 adopts a clamping plate design with first clamping plates 32 and second clamping plates 33 in different directions. During use, it can achieve multi-point clamping and fixation, and better realize the uniform force on the flange 11 and the connection plate 12 in four directions. Moreover, the arc-shaped design of the first clamping plate 32 and the second clamping plate 33 is adapted to the circumferential sides of the flange 11 and the connection plate 12, ensuring close fitting during the clamping process and providing a more stable connection. At the same time, the design of the insertion posts and the slots 121 of the connection plate 12 further ensures the accuracy of the clamping position, avoids deviations during the installation process, improves the stability of the equipment, and thus achieves a more stable connection effect.

[0040] In some embodiments, as Figure 2 shown, the disassembly and assembly operation mechanism 5 further includes a limiting mechanism 52 for restricting the rotation of the bidirectional threaded rod 51 and a pull ring 53 connected to the limiting mechanism 52. The limiting mechanism 52 is connected to one end of the bidirectional threaded rod 51 extending out of the support plate 4 and can lock the bidirectional threaded rod 51. The pull ring 53 is connected to the outer end of the limiting mechanism 52 and can release the locking of the limiting mechanism 52 on the bidirectional threaded rod 51 when pulled in a direction away from the bidirectional threaded rod 51.

[0041] In this embodiment, a limiting mechanism 52 is added to the disassembly and assembly operation mechanism 5. The limiting mechanism 52 can ensure that the bidirectional threaded rod 51 does not rotate in a non-operating state through mechanical restriction, avoiding the risk of connection loosening caused by misoperation. In the embodiment of the present application, a pull ring 53 is also connected to the limiting mechanism 52. Through the setting of the pull ring 53, the user can release the locking of the limiting mechanism 52 on the bidirectional threaded rod 51 through a simple pulling operation, making the operation more intuitive and convenient and reducing the possibility of misoperation. In this embodiment, the combined design of the mechanical limit of the limiting mechanism 52 and the pull ring 53 realizes a more reliable and convenient limit locking operation, which is suitable for applications where the protection against misoperation is required to be relatively high.

[0042] Referring to Figure 2 、 Figure 3 、 Figure 5 and Figure 6 In some embodiments, the limiting mechanism 52 includes a limiting ring 521, a limiting block 522, a sliding rod 523 and a spring 524.

[0043] The limiting ring 521 is arranged at one end of the bidirectional threaded rod 51 extending out of the support plate 4 and is fixedly connected to the support plate 4. One end of the bidirectional threaded rod 51 extending out of the support plate 4 passes through the limiting ring 521, and a slideway 511 extending to the outside along the length direction is opened at this end. The end of the bidirectional threaded rod 51 passing through the limiting ring 521 itself will not be restricted by the limiting ring 521. A limiting block 522 that is radially rotationally restricted within the limiting ring 521 and is located outside the end of the bidirectional threaded rod 51 is slidably connected to the inner wall of the limiting ring 521. Here, the limiting block 522 can slide in the length direction of the limiting ring 521, and will be restricted by the limiting ring 521 in the radial direction. Thus, as long as the limiting block 522 is within the limiting ring 521, it cannot perform radial rotation relative to the limiting ring 521. A pull ring 53 is arranged at the end of the limiting block 522 away from the bidirectional threaded rod 51. The arrangement of the pull ring 53 facilitates the user to pull the limiting block 522 out from the inner wall of the limiting ring 521. As Figure 5 shown, the other end of the limiting block 522 is fixedly connected to a slide rod 523 located within the slideway 511. The slide rod 523 is slidably connected to the slideway 511 and is radially rotationally restricted within the slideway 511. Therefore, the slide rod 523 will not generate radial rotation relative to the bidirectional threaded rod 51. A spring 524 is fixedly connected between the slide rod 523 and the inner bottom end of the slideway 511. During the use process, pulling the limiting block 522 through the pull ring 53 can drive the slide rod 523 to move. At the same time, the slide rod 523 will stretch the spring 524. When the pull ring 53 is released, and thus the limiting block 522 is released, the spring 524 will pull the slide rod 523 and the limiting block 522 to reset through its own elasticity, so that the limiting block 522 is stuck on the inner wall of the limiting ring 521.

[0044] In this embodiment, the tight fit between the limiting block 522 of the limiting mechanism 52 and the limiting ring 521 can ensure that the bidirectional threaded rod 51 will not accidentally rotate during the operation process, improving the stability of the operation. The arrangement of the spring 524 enables the limiting block 522 to automatically reset when not being operated, making the limiting block 522 automatically return to the limiting ring 521, reducing the burden of manual operation and enhancing the automation degree of the equipment. At the same time, the use of this limiting mechanism 52 can also reduce the thread wear of the bidirectional threaded rod 51 caused by loosening, thereby effectively extending the service life of the equipment.

[0045] In some embodiments, as Figure 5 and Figure 6 shown, a slider 5231 is arranged on the rod body of the slide rod 523 near the spring 524 end, and a limiting groove for restricting the slider 5231 to only slide along the length direction on the inner wall of the slideway 511 is arranged on the inner wall of the slideway 511.

[0046] During use, the cooperation between the sliding rod 523 and the sliding track 511 can ensure the movement path of the limiting block 522, avoiding the deviation of the limiting block 522 during operation, thereby ensuring the limiting effect of the bidirectional threaded rod 51. The setting of the slider 5231 and the limiting groove can limit the radial rotation of the sliding rod 523 in the sliding track 511 without affecting the movement of the sliding rod 523 in the length direction within the sliding track 511. Moreover, the setting of the slider 5231 and the limiting groove enables precise control of the sliding path of the sliding rod 523 in the sliding track 511, and when the sliding rod 523 and the limiting block 522 are reset, it can be more stable, reducing the impact during operation and improving the overall stability of the device.

[0047] In some embodiments, as Figure 1 shown, the actuator 2 includes a control box 21, a transmission shaft 22, and a fixed rod 23. A motor is provided inside the control box 21. The output shaft of the motor is connected to a transmission shaft 22 vertically arranged below the control box 21. The lower end of the transmission shaft 22 extends into the connection disk 12 and is connected to the regulating valve body inside the pipe body 1 via a flange disk 11. The bottom end of the control box 21 is fixedly connected to a fixed rod 23, and the other end of the fixed rod is fixedly connected to the connection disk 12. Additionally, optionally, a turntable for manual adjustment is provided on one side outside the control box 21 to serve as an emergency operation device for manual adjustment in case of emergency, so as to ensure that the device can continue to operate or stop safely.

[0048] The design of traditional actuators for regulating the pressure inside the pipe body often requires multiple independent components to be connected, and the installation and maintenance are relatively complex. In the embodiment of the present application, the motor is integrated inside the control box 21, and the bottom end of the control box 21 is fixedly connected to the fixed rod 23, and the output shaft of the motor is connected to the transmission shaft, making the structure of the entire actuator 2 more compact and reducing the complexity of installation and maintenance. At the same time, in the embodiment of the present application, the control box 21 is firmly connected to the connection disk 12 through the fixed rod 23, and the motor is installed inside the control box 21. In this way, during the operation of the motor, the position of the connection disk 12 will not be offset due to the vibration of the motor, thereby improving the stability of the device operation. In addition, the output shaft of the motor is connected to the transmission shaft 22, and the regulating valve body inside the pipe body 1 is connected through the transmission shaft 22, thereby avoiding unnecessary losses in the intermediate transmission link and improving the transmission efficiency and control accuracy.

[0049] When the actuator 2 needs to be installed, the fixing rod 23 of the actuator 2 needs to be fixedly connected to the connecting plate 12, and then the actuator 2 with the connecting plate 12 fixedly connected is placed at a suitable position on the upper surface of the pipe body 1, that is, the connecting plate 12 is aligned with the flange 11 and placed, and then the bidirectional threaded rod 51 is rotated. Since the threaded sections at both ends of the bidirectional threaded rod 51 are threadedly connected to the connecting rod 31, and one end of the connecting rod 31 with a screw hole 311 is inserted through the through hole on the inner side of the support plate 4 and is rotated and connected in the support plate 4, so that the connecting rod 31 can move linearly. When the connecting rod 31 drives When the first clamping plate 32 is oriented toward the connection plate 12 and the flange plate 11, the first plug post 321 fixed on the top of the first clamping plate 32 is driven to move and insert into the inner wall of the slot 121. At the same time, the sliding column 342 slidably connected to the slide groove 341 will move along the slope of the slide groove 341. The sliding column 342 will drive the arc-shaped connecting strip 35 and the second clamping plate 33 to move accordingly. With the movement of the first clamping plate 32 and the second clamping plate 33, the first plug post 321 and the second plug post 331 gradually contact and are inserted into the slot 121 opened on the annular side of the connection plate 12, thereby fixing the actuator 2.

[0050] Before rotating the bidirectional threaded rod 51, it is necessary to pull the limit block 522 through the pull ring 53 to make it separate from the inner wall of the limit ring 521. When the limit block 522 is pulled, the limit block 522 will drive the slide bar 523 to move and stretch the spring 524. When it is not necessary to rotate the bidirectional threaded rod 51, loosen the limit block 522, and the spring 524 will pull the slide bar 523 and the limit block 522 to move in the opposite direction through its own elasticity to reset, so that the limit block 522 is stuck on the inner wall of the limit ring 521, and the bidirectional threaded rod 51 is locked to limit its rotation, thereby improving practicality. When it is necessary to disassemble the actuator 2, the bidirectional threaded rod 51 can be rotated in the opposite direction.

[0051] In some embodiments, Figure 5 and Figure 6 As shown, the limiting ring 521 is axially provided with a sliding hole 5211 for the limiting block 522 to be slidably connected. The shape of the limiting block 522 is adapted to the sliding hole 5211 , and the sliding hole 5211 is a regular hexagonal structure.

[0052] In this embodiment, the structure of the sliding hole 5211 of the limit ring 521 is restricted, and the regular hexagonal structure of the sliding hole 5211 is closely matched with the shape of the limit block 522, which can ensure that the limit block 522 will not be rotated or offset when in the sliding hole 5211. Therefore, when it is necessary to limit the rotation of the two-way threaded rod 51, the two-way threaded rod 51 is locked and no longer rotates, and no rotational offset occurs when locked. At this time, just stop pulling the pull ring 53, loosen the pull ring 53, and allow the limit block 522 to naturally return to the sliding hole 5211 of the limit ring 521 under the action of the spring 524. In this way, the limit block 522 can be locked in the sliding hole 5211, and the limit block 522 and the two-way threaded rod 51 will no longer be rotated or offset, thereby maintaining the stability and reliability of the limiting operation.

[0053] During the use of the pressure regulating device of the pumped storage power station of the embodiment of the present application, when it is necessary to remove the actuator 2 together with the connecting plate 12 from the flange 11 or to lock the actuator 2 together with the connecting plate 12 on the flange 11, it is only necessary to pull the pull ring 53 outward so that the limit block 522 connected to the pull ring 53 is disengaged from the sliding hole 5211 of the limit ring 521, thereby releasing the restriction of the limit ring 521 on the limit block 522, so that the limit block 522 can be rotated by rotating the pull ring 53, so that the sliding hole 5211 connected to the other end of the limit block 522 can be released. The rod 523 also rotates. When the sliding rod 523 rotates, the bidirectional threaded rod 51 also rotates accordingly. By controlling the pull ring 53 to rotate clockwise or counterclockwise in different ways, the bidirectional threaded rod 51 can be rotated clockwise or counterclockwise in different ways. Therefore, the two groups of clamping connection components 3 can be controlled by the two different rotations of the bidirectional threaded rod 51, so that the two groups of clamping connection components 3 can be moved away from or close to the flange 11 and the connecting plate 12, thereby realizing the release of the locking connection between the flange 11 and the connecting plate 12 by the clamping connection component 3 or the locking and fixing connection between the two.

[0054] In summary, the embodiment of the present application provides a pumped-storage power station pressure regulating device that can achieve rapid disassembly and assembly and ensure stable connection through mechanical clamping. By providing a clamping connection component 3 and a disassembly and assembly operating mechanism 5, a rapid and stable connection between the flange 11 and the connecting plate 12 can be achieved, thereby avoiding the problems of complex operation and inconvenient disassembly and assembly of the traditional bolt connection method. This design not only simplifies the operation process, but also greatly improves the stability of the equipment.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressure regulating device for a pumped storage power station, characterized in that: The invention relates to a pipe body (1) of a regulating valve, wherein an actuator (2) for regulating the pressure in the pipe body is detachably mounted on the top of the pipe body (1), wherein the output end of the actuator (2) is located in the pipe body (1) and is connected to the regulating valve body in the pipe body (1), wherein a flange (11) is integrally arranged on the top surface of the pipe body (1), wherein a connecting plate (12) for mounting the actuator (2) is arranged above the flange (11), wherein the connecting plate (12) has the same outer diameter as the flange (11) and is coaxially arranged up and down to form a sealed contact, wherein the flange (11) is provided with a plurality of connecting plates (12) for mounting the actuator (2), wherein the connecting plate (12) and the flange (11) are coaxially arranged up and down to form a sealed contact, and wherein the flange (11) is provided with a plurality of connecting plates (12) for mounting the actuator (2). ) is provided between the left and right sides of the outside of the flange (11), and the flange (11) is fixedly connected to the connecting plate (12) through the clamping connection components (3). A support plate (4) arranged laterally on the left and right is fixedly provided at the front position above the tube body (1). A disassembly and assembly operating mechanism (5) is provided on the support plate (4) for synchronously controlling the two groups of the clamping connection components (3) to clamp and fix the flange (11) and the connecting plate (12) together. The disassembly and assembly operating mechanism (5) is connected to the two groups of the clamping connection components (3).

2. The pressure regulating device of a pumped storage power station according to claim 1, characterized in that: The disassembly and assembly operating mechanism (5) comprises a bidirectional threaded rod (51), wherein the bidirectional threaded rod (51) is rotatably arranged inside the top end of the support plate (4) and one end of the bidirectional threaded rod (51) extends out of the support plate (4); the length direction of the bidirectional threaded rod (51) is consistent with the length direction of the support plate (4); the left and right end thread sections of the bidirectional threaded rod (51) are respectively connected with a group of the clamping connection components (3); the two groups of the clamping connection components (3) can move towards or away from the flange (11) and the connecting plate (12) when the bidirectional threaded rod (51) rotates; when the two groups of the clamping connection components (3) gradually move towards the flange (11) and the connecting plate (12), the flange (11) and the connecting plate (12) can be clamped and locked together by the clamping connection components (3).

3. The pressure regulating device of a pumped storage power station according to claim 2, characterized in that: The clamping connection assembly (3) comprises a connecting rod (31), a first clamping plate (32), a second clamping plate (33), a bottom plate (34) and an arc-shaped connecting strip (35); A screw hole (311) is provided at one end of the connecting rod (31) and the end is threadedly connected to a threaded section on one end of the bidirectional threaded rod (51) through the screw hole (311); the other end of the connecting rod (31) is fixedly connected to the bottom plate (34); the first vertical clamping plate (32) is provided on the outer side of the upper surface of the bottom plate (34); a sliding groove (341) is provided on the upper surface of the bottom plate (34) and is located on the inner side of the first clamping plate (32); a vertical sliding column is slidably connected to the inner wall of the sliding groove (341) (342), the bottom end of the sliding column (342) is connected to the arc-shaped connecting strip (35), and the other end of the arc-shaped connecting strip (35) is fixedly connected to the second clamping plate (33). When the connecting rod (31) moves toward the flange (11) and the connecting plate (12), the first clamping plate (32) can move accordingly and synchronously drive the second clamping plate (33) to move. The inner side of the first clamping plate (32) and the second clamping plate (33) has a structure that can fit the flange (11) and the connecting plate. (12) an arc-shaped surface structure of the annular side surface, the second clamping plate (33) and the first clamping plate (32) are spaced 90 degrees apart, the two first clamping plates (32) and the two second clamping plates (33) of the two groups of the clamping connection components (3) are distributed in the front, back, left, and right directions of the flange (11) and the connecting plate (12), the upper surface of the bottom plate (34) is flush with the lower surface of the flange (11), and the first clamping plate (32) and the second clamping plate (33) are respectively provided with a first plug column (3 21) and a second plug post (331), the first plug post (321) and the second plug post (331) are of the same height, four groups of slots (121) are provided on the circumferential side surface of the connecting disk (12), the four slots (121) respectively correspond to the front, back, left, and right directions of the circumferential side surface of the connecting disk (12), and the four slots (121) can be used for the first plug post (321) and the second plug post (331) to be plugged in when the first clamping plate (32) and the second clamping plate (33) move toward the connecting disk (12).

4. The pressure regulating device of a pumped storage power station according to claim 2 or 3, characterized in that: The assembly and disassembly operating mechanism (5) further comprises a limiting mechanism (52) for limiting the rotation of the bidirectional threaded rod (51) and a pull ring (53) connected to the limiting mechanism (52); the limiting mechanism (52) is connected to one end of the bidirectional threaded rod (51) extending out of the support plate (4) and is capable of locking the bidirectional threaded rod (51); the pull ring (53) is connected to one outer end of the limiting mechanism (52) and is capable of releasing the locking of the bidirectional threaded rod (51) by the limiting mechanism (52) when the limiting mechanism (52) is pulled in a direction away from the bidirectional threaded rod (51).

5. The pressure regulating device of a pumped storage power station according to claim 4, characterized in that: The limiting mechanism (52) comprises a limiting ring (521), a limiting block (522), a sliding rod (523) and a spring (524); The limiting ring (521) is arranged at one end of the bidirectional threaded rod (51) extending out of the support plate (4) and is fixedly connected to the support plate (4); the one end of the bidirectional threaded rod (51) extending out of the support plate (4) is passed through the limiting ring (521) and a slideway (511) extending outward along the length direction is opened in the limiting ring (521); the inner wall of the limiting ring (521) is slidably connected to a radially rotationally restricted member inside the limiting ring (521) and located outside the end of the bidirectional threaded rod (51). The limit block (522) is provided with the pull ring (53) at one end of the limit block (522) away from the bidirectional threaded rod (51), and the other end of the limit block (522) is fixedly connected to the sliding rod (523) located in the slideway (511), the sliding rod (523) is slidably connected to the slideway (511) and is limited in radial rotation in the slideway (511), and the spring (524) is fixedly connected between the sliding rod (523) and the inner bottom end of the slideway (511).

6. The pressure regulating device of a pumped storage power station according to claim 5, characterized in that: The slide rod (523) is provided with a slider (5231) on the rod body close to one end of the spring (524), and the inner wall of the slideway (511) is provided with a limiting groove for restricting the slider (5231) to slide only along the length direction of the inner wall of the slideway (511).

7. The pressure regulating device of a pumped storage power station according to claim 5 or 6, characterized in that: The actuator (2) comprises a control box (21), a transmission shaft (22) and a fixing rod (23); a motor is arranged in the control box (21); an output shaft of the motor is connected to the transmission shaft (22) vertically arranged below the control box (21); a downward end of the transmission shaft (22) extends into the connecting plate (12) and is connected to the regulating valve body in the pipe body (1) through the flange plate (11); the bottom end of the control box (21) is fixedly connected to the fixing rod (23); the other end of the fixing rod is fixedly connected to the connecting plate (12).

8. The pressure regulating device of a pumped storage power station according to claim 5 or 6, characterized in that: The limiting ring (521) is axially provided with a sliding hole (5211) for the limiting block (522) to be slidably connected, the shape of the limiting block (522) is adapted to the sliding hole (5211), and the sliding hole (5211) is a regular hexagonal structure.

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