A power plant spherical gas source valve lock

Abstract

The utility model discloses a power plant spherical gas source valve lockset relates to valve lockset technical field, including first clamping arm, second clamping arm and gas source valve, the front side middle part of first clamping arm and second clamping arm all is provided with the frame of card, and the lateral wall of frame is provided with the card groove, and the upper and lower lateral wall of card groove all are connected with screw rod, and the outer end fixed connection of screw rod has rotary column, and the inner end movable connection of screw rod has clamping plate through bearing. The utility model discloses a frame of card is set up, after using first clamping arm and second clamping arm to hold tightly gas source valve, forms the physical protection outside gas source valve, prevents the operation personnel or the unauthorized personnel of overhauling time to touch handle and opens the valve, avoids the hot air burn accident of happening in the process of overhauling, and through setting up the card groove, handle is limited in the inside of card groove, and the adjustment of clamping plate position is used to screw rod simultaneously, and the two sides of handle are clamped, and the position of handle is further limited, prevents the problem that the valve appears slightly leak.

Description

Technical Field

[0001] This utility model relates to the field of valve locking technology, and more specifically to a valve locking device for a spherical gas source valve in a power plant. Background Technology

[0002] Spherical air supply valves are key components in power plants for controlling the flow of media such as compressed air and hot air. The valve core is spherical, and the flow of media is controlled by rotating the valve handle from 0 to 90 degrees. During maintenance of the power plant mill system, it is necessary to close and lock the associated spherical air supply valves such as those in the hot air duct to prevent accidental flow of media and potential safety accidents. However, current traditional locking methods have serious defects.

[0003] First, traditional chain-locking systems use ordinary stainless steel chains wrapped around valve handles and pipes, secured only by a single padlock. The chains have large gaps (≥10mm), making them prone to loosening under vibration or external force, allowing the handle to rotate 5-10° and posing a risk of minor hot air leakage. Second, these systems only display a sign without any locking mechanism. The gas source valve only has a "Do Not Operate" warning sign without any physical locking structure, meaning operators or unauthorized personnel may accidentally activate the handle and open the valve, directly causing a safety accident.

[0004] Therefore, it is necessary to propose a valve lock for a spherical gas source valve in a power plant to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problems of micro-leakage and lack of physical locking in spherical gas source valves.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A valve lock for a spherical gas source valve in a power plant includes a first clamping arm, a second clamping arm, and a gas source valve. A retaining frame is provided at the front center of both the first and second clamping arms. A retaining groove is provided on the side wall of the retaining frame. A screw is threaded to the upper and lower side walls of the retaining groove. A clamping plate is movably connected to the inner end of the screw via a bearing. A rectangular block is provided at both ends of the clamping plate. A rectangular groove is provided on the two vertical side walls of the retaining groove to slide with the rectangular block.

[0008] The first and second clamping arms are symmetrically provided with locking rings at both ends, and the locking rings between the first and second clamping arms are locked by a padlock.

[0009] Furthermore, a handle is provided in the middle of the gas source valve, and a locking block is provided on the outer wall of the gas source valve to limit the rotation range of the handle. Pipes are connected to both the upper and lower ends of the gas source valve.

[0010] Furthermore, the upper and lower side walls of the first and second clamping arms are provided with arc-shaped grooves, the inside of which is embedded a rubber pad. The top wall of the rubber pad is provided with a positioning post, and the inner walls of the first and second clamping arms are provided with positioning grooves that cooperate with the positioning post.

[0011] Furthermore, the rear sidewalls of the first and second clamping arms are connected by hinges, and the two blades of the hinges are welded to the first and second clamping arms respectively.

[0012] Furthermore, a rotating column is fixedly connected to the outer end of the screw, and anti-slip grooves are distributed in a ring array on the outer circumference of the rotating column.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a clamping frame, can form physical protection outside the gas source valve after the first clamping arm and the second clamping arm are used to hold it tightly, so as to prevent the operator or unauthorized personnel from accidentally touching the handle to open the valve during maintenance, thereby avoiding hot air burn accidents during maintenance.

[0015] 2. This utility model, by setting a slot, can restrict the handle inside the slot. At the same time, by using the screw to adjust the position of the clamping plate, the upper and lower sides of the handle can be clamped, further limiting the position of the handle and preventing the valve from leaking slightly.

[0016] 3. This utility model, by setting two pairs of locking rings, can lock the upper and lower sides of the first and second clamping arms, making it convenient and quick to fix the first and second clamping arms to the outside of the gas source valve. The limit can only be released by both maintenance personnel and operators, eliminating the risk of unilateral operation and achieving the purpose of avoiding the danger to maintenance personnel caused by operators operating alone during maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention after installation.

[0018] Figure 2 This is a schematic diagram of the gas source valve structure that is compatible with this utility model.

[0019] Figure 3 This is a schematic diagram of the right-side stereoscopic structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the internal three-dimensional structure during the installation process of this utility model.

[0021] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the second clamping arm of this utility model.

[0022] Figure 6 This is a schematic diagram of the internal three-dimensional structure of the first clamping arm of this utility model.

[0023] Reference numerals in the attached drawings: 1. First clamping arm; 2. Second clamping arm; 3. Arc groove; 4. Rubber pad; 5. Pipe; 6. Handle; 7. Frame; 8. Slot; 9. Clamping plate; 10. Screw; 11. Rotating column; 12. Locking ring; 14. Air source valve; 15. Block; 19. Hinge; 20. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 6 A valve lock for a spherical gas source valve in a power plant includes a first clamping arm 1, a second clamping arm 2, and a gas source valve 14. A clamping frame 7 is provided at the front middle of both the first clamping arm 1 and the second clamping arm 2. A clamping groove 8 is provided on the side wall of the clamping frame 7. A screw 10 is threadedly connected to the upper and lower side walls of the clamping groove 8. A rotating column 11 is fixedly connected to the outer end of the screw 10. Anti-slip grooves are distributed in a circular array on the outer circumference of the rotating column 11. A clamping plate 9 is movably connected to the inner end of the screw 10 through a bearing. A rectangular block is provided at both ends of the clamping plate 9. A rectangular groove that slides with the rectangular block is provided on the two vertical side walls of the clamping groove 8.

[0026] Locking rings 12 are symmetrically provided at both the upper and lower ends of the first clamping arm 1 and the second clamping arm 2. The locking rings 12 between the first clamping arm 1 and the second clamping arm 2 are locked by a padlock.

[0027] like Figure 2 As shown, a handle 6 is provided in the middle of the air source valve 14, and a locking block 15 is provided on the outer wall of the air source valve 14 to limit the rotation range of the handle 6. Pipes 5 are connected to both the upper and lower ends of the air source valve 14.

[0028] The first clamping arm 1, the second clamping arm 2, and the clamping frame 7 are all made of 304 stainless steel, which can withstand high temperatures above 120℃, has a thickness of more than 8mm, and the surface is polished to prevent dust accumulation.

[0029] In this embodiment, by setting the frame 7 and the first clamping arm 1 and the second clamping arm 2, the padlock can lock the mating locking ring 12, making the first clamping arm 1 and the second clamping arm 2 connected as one unit, enclosing the air source valve 14 in the middle of the lock, thereby forming physical protection for the air source valve 14 and preventing the air source valve 14 from being accidentally opened. Furthermore, the rotation range of the handle 6 of the air source valve 14 is limited by the locking block 15 to 0-90°. When the handle 6 is in the closed state, it is as follows... Figure 2 As shown, when adjusting the position of the clamping plate 9 by rotating the column 11, as Figure 1 As shown, rectangular blocks are provided at both ends of the clamping plate 9, and rectangular grooves that slide with the rectangular blocks are provided on the two vertical side walls of the slot 8. The clamping plate 9 is long and narrow, and its two ends are slidably engaged with the rectangular blocks inside the rectangular grooves, which facilitates the clamping plate 9 to slide up and down inside the slot 8. In addition, a disc is provided in the middle of the clamping plate 9 to facilitate the connection with the screw 10 through a bearing, so that the clamping plate 9 and the screw 10 can rotate and move up and down with the screw 10. This can clamp the upper and lower clamping plates 9 on both sides of the handle 6, thereby further preventing the handle 6 from rotating and avoiding the accident of micro-leakage of the air source valve 14.

[0030] Specifically, such as Figures 4-6 As shown, the upper and lower side walls of the first clamping arm 1 and the second clamping arm 2 are provided with arc-shaped grooves 3, and rubber pads 4 are embedded inside the arc-shaped grooves 3. A positioning post is provided on the top wall of the rubber pad 4. The inner walls of the first clamping arm 1 and the second clamping arm 2 are provided with positioning grooves 20 that cooperate with the positioning post. The rubber pad 4 has a thickness of not less than 5mm, is heat resistant to 150℃, and has an elastic coefficient ≥5MPa, which increases the friction with the pipe 5 and avoids damage to the outer wall of the pipe at high temperature.

[0031] In this embodiment, by setting rubber pads 4 inside the first clamping arm 1 and the second clamping arm 2, the friction with the pipe 5 can be increased, and the metal edges and corners on the lock can be prevented from directly contacting the pipe 5 or the air source valve 14 and causing damage. Furthermore, by cooperating with the positioning groove 20, rubber pads 4 with different opening sizes can be quickly replaced. By replacing the rubber pads 4, the lock can be adapted to pipes 5 with different diameters, thus increasing the adaptability of the lock.

[0032] Specifically, such as Figures 4-6 As shown, the rear sidewalls of the first clamping arm 1 and the second clamping arm 2 are connected by a hinge 19. The two blades of the hinge 19 are welded to the first clamping arm 1 and the second clamping arm 2 respectively. By connecting the first clamping arm 1 and the second clamping arm 2 together with the hinge 19, the lock can be connected as a whole, and the opening angle between the first clamping arm 1 and the second clamping arm 2 can be easily adjusted, making it convenient to install the lock on the outside of the air source valve 14.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. The scope of patent protection of this utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model shall also be included within the scope of protection of this utility model.

Claims

1. A valve lock for a spherical gas source valve in a power plant, comprising a first clamping arm (1), a second clamping arm (2), and a gas source valve (14), characterized in that: The first clamping arm (1) and the second clamping arm (2) are both provided with a clamping frame (7) at the front middle. The side wall of the clamping frame (7) is provided with a clamping groove (8). The upper and lower side walls of the clamping groove (8) are threaded with a screw (10). The inner end of the screw (10) is movably connected to a clamping plate (9) through a bearing. Both ends of the clamping plate (9) are provided with rectangular blocks. The two vertical side walls of the clamping groove (8) are provided with rectangular grooves that slide with the rectangular blocks. The first clamping arm (1) and the second clamping arm (2) are symmetrically provided with locking rings (12) at both ends, and the locking rings (12) between the first clamping arm (1) and the second clamping arm (2) are locked by padlocks.

2. The valve lock for a power plant spherical gas source valve according to claim 1, characterized in that: A handle (6) is provided in the middle of the gas source valve (14), and a locking block (15) is provided on the outer wall of the gas source valve (14) to limit the rotation range of the handle (6). Pipes (5) are connected to both the upper and lower ends of the gas source valve (14).

3. The valve lock for a power plant spherical gas source valve according to claim 1, characterized in that: The upper and lower side walls of the first clamping arm (1) and the second clamping arm (2) are provided with arc-shaped grooves (3), and rubber pads (4) are embedded inside the arc-shaped grooves (3). A positioning post is provided on the top wall of the rubber pads (4). The inner walls of the first clamping arm (1) and the second clamping arm (2) are provided with positioning grooves (20) that cooperate with the positioning post.

4. The valve lock for a power plant spherical gas source valve according to claim 1, characterized in that: The rear sidewalls of the first clamping arm (1) and the second clamping arm (2) are connected by a hinge (19), and the two blades of the hinge (19) are welded to the first clamping arm (1) and the second clamping arm (2) respectively.

5. The valve lock for a power plant spherical gas source valve according to claim 1, characterized in that: The outer end of the screw (10) is fixedly connected to a rotating column (11), and the outer circumference of the rotating column (11) is provided with anti-slip grooves arranged in a ring array.

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