Manual valve assist opening device and method of use

Abstract

The application discloses a kind of manual valve auxiliary opening device and use method, opening device includes vertical extension rod, the upper end of extension rod is equipped with transverse torsion bar, the middle part of torsion bar is fixed with extension rod, the outside of lower end of extension rod is equipped with first ring rod, and adapter structure is equipped between extension rod and first ring rod, and multiple circumferential distribution and downward extension torsion blocks are equipped on adapter structure;The adapter structure includes the second ring rod between the first ring rod and the extension rod, and multiple circumferential distribution first connecting rods are equipped between the second ring rod and the first ring rod, and the bottom of first connecting rod is equipped with torsion block, and torsion block is slidably connected with first connecting rod, and multiple circumferential distribution second connecting rods are equipped between the second ring rod and the extension rod.The application has the advantages of convenient manual valve switch, reducing the security risk when switching manual valve, wide application range and low failure rate.

Description

Technical Field

[0001] This invention belongs to the field of manual valve opening equipment in pumped storage power stations, and particularly relates to a manual valve auxiliary opening device and its usage method. Background Technology

[0002] Pumped storage power stations have numerous underground pipelines, with manual valves installed on these pipelines to control the flow of water. These valves are opened or closed by rotating a handwheel; the manual valves used in pumped storage power stations are primarily gate valves. Switching between on and off states requires turning the handwheel many times. Furthermore, due to the large pipe diameter and high water pressure, significant friction occurs between the valve body and valve core. A considerable force is required to overcome this friction when rotating the handwheel, resulting in high resistance.

[0003] The handwheel's structure includes an outer ring for gripping during rotation and a fixing component located inside the outer ring. The fixing component is connected to the screw drive shaft of the manual valve. Multiple circumferentially evenly distributed spokes (usually three) are located between the fixing component and the outer ring. Because the handwheel is cast, although the included angles between the spokes should be the same in the design, slight deviations still exist due to the casting process. The typical operation involves the worker holding and rotating the outer ring, which, through the spokes and the fixing component, drives the screw drive shaft up or down, thereby opening or closing the manual valve.

[0004] Pumped storage power stations have numerous pipelines with a long total length, resulting in a large number of manual valves. During maintenance, it is necessary to switch the on / off states of multiple manual valves. Since the pipelines are buried underground, the manual valves are located below ground level, requiring the construction of valve shafts on the surface. For example, the Pingjiang Pumped Storage Power Station in Hunan Province has many manual valves installed within these shafts. The handwheels of the manual valves are located at the top of the valve. When the handwheel is close to the shaft opening, workers turn it from the shaft opening; when it is far from the shaft opening, workers enter the shaft to turn it. Turning the handwheel at the shaft opening requires workers to lie down, making it difficult to exert force and thus hindering the opening and closing of the manual valves. Turning the handwheel inside the shaft requires workers to enter and exit the shaft, posing safety hazards, and the narrow shaft further restricts force, making the operation of the manual valves difficult. Summary of the Invention

[0005] The purpose of this invention is to provide a manual valve auxiliary opening device and its usage method. This invention has the advantages of making manual valve opening and closing convenient, reducing safety hazards when opening and closing manual valves, having a wide range of applications, and a low failure rate.

[0006] The technical solution of the present invention: a manual valve assisted opening device includes a vertical extension rod, a horizontal torsion bar at the upper end of the extension rod, the middle part of the torsion bar being fixed to the extension rod, a first ring rod at the lower outer side of the extension rod, a connecting structure between the extension rod and the first ring rod, and a plurality of circumferentially distributed and downwardly extending torsion blocks on the connecting structure.

[0007] In the aforementioned manual valve assisted opening device, the transition structure includes a second ring rod located between the first ring rod and the extension rod, and multiple circumferentially distributed first connecting rods are provided between the second ring rod and the first ring rod. A torsion block is provided at the bottom of the first connecting rod, and the torsion block is slidably connected to the first connecting rod. Multiple circumferentially distributed second connecting rods are provided between the second ring rod and the extension rod.

[0008] In the aforementioned manual valve auxiliary opening device, the upper end of the extension rod is provided with a pull tab, a pull cable is provided between the pull tab and the torsion block, and a spring is provided on the inner end of the torsion block.

[0009] In the aforementioned manual valve auxiliary opening device, the extension rod is tubular, and the upper end of the extension rod is provided with a radially penetrating guide hole. The middle part of the pull tab is located in the guide hole, and both ends of the pull tab are arc-shaped. The upper end of the pull cable is fixed to the middle part of the pull tab.

[0010] In the aforementioned manual valve assisted opening device, the first connecting rod has a guide channel inside, a spring inside the guide channel, a guide post on one side of the spring, the guide post is located at the outer end of the first connecting rod, the inner end of the guide post is connected to a cable, the bottom of the first connecting rod has a lower guide slide that connects to the guide channel, and the torsion block passes through the lower guide slide and is fixed to the bottom of the guide post.

[0011] In the aforementioned manual valve assisted opening device, the top of the first connecting rod is provided with an upper guide slide that connects to the guide channel, and an anti-torsion plate fixed to the guide column is provided inside the upper guide slide.

[0012] In the aforementioned manual valve assisted opening device, the lower inner side of the extension rod is provided with multiple circumferentially distributed steering rods. One end of the cable passes through the first connecting rod, the second ring rod and the extension rod in sequence, and then connects to the pull plate after passing around the corresponding steering rod.

[0013] In the aforementioned manual valve assisted opening device, the first ring rod, the second ring rod, and the extension rod are arranged coaxially. The axis of the first connecting rod passes through one side of the axis of the extension rod. The second connecting rod is bent into a V shape and a rounded corner transition is provided at the bend. The cable fits and passes over the outside of the second connecting rod.

[0014] In the aforementioned manual valve assisted opening device, the second connecting rod is provided with multiple fixing rings to prevent the cable from falling off.

[0015] The aforementioned method of using the manual valve auxiliary opening device involves placing the first rotating rod on the upper side of the handwheel of the manual valve, and positioning the torsion block on the same circumferential side of the handle. Rotating the torsion bar opens or closes the manual valve.

[0016] Compared with existing technologies, this invention allows workers to turn the handwheel outside the shaft, providing a larger operating space and easier force application. This not only makes opening and closing the manual valve convenient but also reduces safety hazards when entering and exiting the shaft. Furthermore, structural improvements allow multiple torsion blocks to move, adapting to handwheels of different diameters and broadening its applicability. Because the axis of the first connecting rod passes through one side of the extension rod's axis, the movement direction of the torsion blocks is not parallel to the longitudinal direction of the handwheel spokes, overcoming casting errors in the handwheel. Multiple torsion blocks can simultaneously contact multiple spokes on the handwheel, applying force to twist the handwheel concurrently. This results in more even force distribution between contact points, reducing the likelihood of handwheel and device malfunctions. In summary, this invention offers advantages such as convenient manual valve operation, reduced safety hazards during manual valve operation, wide applicability, and low failure rate. Attached Figure Description

[0017] Figure 1 This is a front view of the present invention.

[0018] Figure 2 This is a schematic diagram of the pull tab structure.

[0019] Figure 3 This is a bottom view of the present invention.

[0020] Figure 4 This is a schematic diagram of the first link.

[0021] Figure 5 This is a schematic diagram of the counterclockwise rotation of the handwheel of the present invention.

[0022] Figure 6 This is a schematic diagram of the clockwise rotation of the handwheel according to the present invention.

[0023] The markings in the attached diagram are as follows: 1-Extension rod, 2-Torsion bar, 3-First ring rod, 4-Torsion block, 5-Second ring rod, 6-First connecting rod, 7-Second connecting rod, 8-Pull plate, 9-Cable, 10-Spring, 11-Guide elongated hole, 12-Guide post, 13-Guide channel, 14-Lower guide slide, 15-Upper guide slide, 16-Anti-torsion plate, 17-Steering rod, 18-Fixing ring, 19-Spoke. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0025] Example 1. A manual valve assisted opening device, such as... Figure 1 and Figure 2As shown, it includes a vertical extension rod 1, a horizontal torsion bar 2 at the upper end of the extension rod 1, the middle part of the torsion bar 2 is fixed to the extension rod 1, a first ring rod 3 is provided on the outer side of the lower end of the extension rod 1, and a transition structure is provided between the extension rod 1 and the first ring rod 3.

[0026] The upper end of the extension rod 1 is provided with a pull tab 8, and a pull cable 9 is provided between the pull tab 8 and the torsion block 4. A spring 10 is provided on the inner end of the torsion block 4.

[0027] The extension rod 1 is tubular, and the upper end of the extension rod 1 is provided with a radially penetrating guide hole 11. The middle part of the pull piece 8 is located in the guide hole 11. The two ends of the pull piece 8 are arc-shaped. The shape of the pull piece 8 matches the torsion bar 2. The upper end of the cable 9 is fixed to the middle part of the pull piece 8.

[0028] like Figure 3 As shown, the adapter structure includes a second ring rod 5 located between the first ring rod 3 and the extension rod 1. Multiple circumferentially distributed first connecting rods 6 are provided between the second ring rod 5 and the first ring rod 3. The number of first connecting rods 6 is the same as the number of spokes 19 on the handwheel. The torsion block 4 is located at the bottom of the first connecting rod 6 and is slidably connected to the first connecting rod 6. Multiple circumferentially distributed second connecting rods 7 are provided between the second ring rod 5 and the extension rod 1.

[0029] like Figure 4 As shown, the first connecting rod 6 has a guide channel 13 inside, a spring 10 inside the guide channel 13, a guide post 12 on one side of the spring 10, the guide post 12 is slidably connected to the first connecting rod 6, the guide post 12 is located at the outer end of the first connecting rod 6, the inner end of the guide post 12 is connected to the cable 9, the bottom of the first connecting rod 6 has a lower guide slide 14 that connects to the guide channel 13, the torsion block 4 passes through the lower guide slide 14 and is fixed to the bottom of the guide post 12, the torsion block 4 is cylindrical, and the diameter of the torsion block 4 matches the width of the lower guide slide 14.

[0030] The top of the first connecting rod 6 is provided with an upper guide slide 15 that connects to the guide channel 13. The upper guide slide 15 is provided with an anti-torsion plate 16 that is fixed to the guide post 12. The anti-torsion plate 16 is slidably connected to the first connecting rod 6 to provide the torque for the guide post 12 to twist.

[0031] The lower inner side of the extension rod 1 is provided with multiple circumferentially distributed steering rods 17. One end of the cable 9 passes through the first connecting rod 6, the second ring rod 5 and the extension rod 1 in sequence, and then connects to the pull plate 8 after passing around the corresponding steering rod 17.

[0032] The first ring rod 3, the second ring rod 5 and the extension rod 1 are arranged coaxially. The axis of the first connecting rod 6 passes through one side of the axis of the extension rod 1. The second connecting rod 7 is bent into a V shape and a rounded corner is provided at the bend. The cable 9 fits and passes over the outside of the second connecting rod 7.

[0033] The second link 7 is provided with multiple retaining rings 18 to prevent the cable 9 from falling off; the cable 9 passes through the retaining rings 18.

[0034] Instructions for use: The worker stands at the shaft opening, holds the torsion bar 2 with both hands, and simultaneously holds both ends of the pull plate 8, so that the pull plate 8 moves closer to the torsion bar 2. The pull plate 8 pulls the cable 9, and the cable 9 overcomes the elastic force of the spring 10, causing the guide column 12 to move inward, which in turn drives the torsion block 4 to move inward.

[0035] Insert the first rod 3 into the wellhead, positioned above the handwheel of the manual valve, and position the torsion block 4 on the same circumferential side of the handle spoke 19. Release the pull tab 8; under the elastic force of the spring 10, the torsion block 4 moves outward. Since the axis of the first connecting rod 6 passes through the axis of the extension rod 1, the direction of movement of the torsion block 4 is not parallel to the spoke 19, ensuring that all torsion blocks 4 simultaneously contact their corresponding spokes 19. Rotate the torsion bar 2; the torsion blocks 4 drive the handwheel to rotate via the spokes 19, thus opening or closing the manual valve.

[0036] Example 2. Based on Example 1, the extension rod 1 adopts an existing telescopic rod to adapt to shafts of various depths and is easy to carry.

Claims

1. A manual valve auxiliary opening device, characterized in that: It includes a vertical extension rod (1), a horizontal torsion bar (2) at the upper end of the extension rod (1), the middle part of the torsion bar (2) is fixed to the extension rod (1), a first ring rod (3) is provided on the outer side of the lower end of the extension rod (1), a transition structure is provided between the extension rod (1) and the first ring rod (3), and multiple circumferentially distributed and downwardly extending torsion blocks (4) are provided on the transition structure. The transition structure includes a second ring rod (5) located between the first ring rod (3) and the extension rod (1), and multiple circumferentially distributed first connecting rods (6) between the second ring rod (5) and the first ring rod (3). A torsion block (4) is provided at the bottom of the first connecting rod (6), and the torsion block (4) is slidably connected to the first connecting rod (6). Multiple circumferentially distributed second connecting rods (7) are provided between the second ring rod (5) and the extension rod (1). The upper end of the extension rod (1) is provided with a pull tab (8), a pull cable (9) is provided between the pull tab (8) and the torsion block (4), and a spring (10) is provided on the inner end of the torsion block (4). The first link (6) has a guide channel (13) inside, a spring (10) inside the guide channel (13), a guide post (12) on one side of the spring (10), the guide post (12) is located at the outer end of the first link (6), the inner end of the guide post (12) is connected to the cable (9), the bottom of the first link (6) has a lower guide slide (14) that connects to the guide channel (13), and the torsion block (4) passes through the lower guide slide (14) and is fixed to the bottom of the guide post (12); Multiple circumferentially distributed steering rods (17) are provided on the inner side of the lower end of the extension rod (1). One end of the cable (9) passes through the first connecting rod (6), the second ring rod (5) and the extension rod (1) in sequence, and connects to the pull plate (8) after passing around the corresponding steering rod (17). The first ring rod (3), the second ring rod (5) and the extension rod (1) are arranged coaxially. The axis of the first connecting rod (6) passes through the axis of the extension rod (1) from one side. The second connecting rod (7) is bent into a V shape and a rounded corner is provided at the bend. The cable (9) fits and passes through the outside of the second connecting rod (7). The worker holds the torsion bar (2) with both hands and simultaneously holds both ends of the pull plate (8), bringing the pull plate (8) close to the torsion bar (2) and causing the torsion block (4) to move inward; so that the torsion block (4) is located on the same circumferential side of the spoke (19) of the handwheel, and the pull plate (8) is released. The direction of movement of the torsion block (4) is not parallel to the spoke (19), ensuring that all torsion blocks (4) are in contact with the corresponding spoke (19) at the same time, and the torsion bar (2) is rotated to open or close the manual valve.

2. The manual valve assisted opening device according to claim 1, characterized in that: The extension rod (1) is tubular, and the upper end of the extension rod (1) is provided with a radially penetrating guide hole (11). The middle part of the pull tab (8) is located in the guide hole (11), and the two ends of the pull tab (8) are arc-shaped. The upper end of the cable (9) is fixed to the middle part of the pull tab (8).

3. The manual valve auxiliary opening device according to claim 1, characterized in that: The top of the first link (6) is provided with an upper guide slide (15) that connects to the guide channel (13), and an anti-torsion plate (16) fixed to the guide post (12) is provided in the upper guide slide (15).

4. The manual valve assisted opening device according to claim 1, characterized in that: The second link (7) is provided with multiple retaining rings (18) to prevent the cable (9) from falling off.

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