Anti-maloperation locking device for valve
By designing a valve anti-malfunction locking device and tightening it on the valve using a wedge plate and threaded shaft structure, the problem of false movement of the valve in the bypass system is solved, the stability and controllability of the valve is achieved, the risk of accidental opening is avoided, and the safety and adaptability of the unit is improved.
Patent Information
- Application Number
- CN202422283668.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The reliability of the existing bypass system valves is insufficient and it is prone to misoperation, which threatens the safe and stable operation of the unit.
A valve anti-malfunction locking device is designed, including a vertical clamping plate, a wedge plate and a threaded shaft structure. By adjusting the distance and height of the wedge plate, it is fastened to the valve, limiting its rotation space, and ensuring the stability and controllability of the valve.
Effectively prevent the valve of the bypass system from accidentally opening, avoid unplanned shutdown accidents, improve the safety and stability of the unit and the reliability of long-term use, adapt to different valve lengths, and can artificially control the valve switch.
Smart Images
Figure CN223063294U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power generation equipment, in particular to a valve anti-misoperation locking device. Background Technique
[0002] The steam turbine bypass system in a power plant refers to a steam temperature reduction and pressure reduction system parallel to the steam turbine; the steam turbine bypass control system is an integral part of the thermal system of a modern unit; its function is that when the operating conditions of the boiler and the steam turbine do not match, that is, when the steam generated by the boiler is greater than the steam required by the steam turbine, the excess part can bypass the steam turbine and be directly introduced into the condenser after temperature reduction and pressure reduction; in addition, some bypasses also undertake the task of directly introducing the main steam of the boiler into the reheater after temperature reduction and pressure reduction to protect the safety of the reheater; these functions of the bypass system are very necessary during unit startup, load reduction or load rejection.
[0003] However, the above-mentioned disclosed solutions have the following deficiencies: The bypass system generally consists of equipment such as a high-pressure bypass valve, a low-pressure bypass valve, and a related desuperheating water system. The reliability of the bypass system valves directly affects the safe and stable operation of the unit. When dealing with abnormal conditions of the bypass system valves during unit operation, the greatest risk is the misoperation of the bypass system valves. How to prevent the bypass valves from being misoperated and opened is a major technical problem faced by the power plant professionals. Content of the Utility Model
[0004] The purpose of the utility model is to solve the technical problem faced by the power plant professionals of preventing the bypass valves from being misoperated and opened, and to provide a valve anti-misoperation locking device.
[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions;
[0006] A valve anti-misoperation locking device described in the utility model includes a vertical clamping plate; a first wedge plate is fixedly connected to the side of the vertical clamping plate; a second wedge plate is slidably connected to the first wedge plate; a threaded shaft is rotatably connected to the second wedge plate; a clamping groove is formed in the vertical clamping plate; a plurality of nuts are threadedly sleeved on the threaded shaft; a supporting unit is provided on the second wedge plate.
[0007] Further, the supporting unit includes a fastener; two semi-cylinders are symmetrically threadedly sleeved on the fastener; a protruding plate is fixedly connected to the upper end of the semi-cylinder; a stepped hole is formed in the semi-cylinder and the protruding plate.
[0008] Further, a plurality of fixing holes are formed in the protruding plate.
[0009] Further, avoidance grooves are formed in the first wedge plate and the second wedge plate.
[0010] Furthermore, the first wedge plate and the second wedge plate have the same inclination.
[0011] Furthermore, upper and lower surfaces of the first wedge plate and the second wedge plate are parallel to each other.
[0012] The utility model provides a valve anti-misoperation locking device, which has the following beneficial effects:
[0013] 1. The utility model can adjust the distance between the threaded shaft and the vertical clamping plate by rotating the positions of the two nuts on the threaded shaft, thereby adjusting the distance between the first wedge plate and the second wedge plate, so that the height of the support unit fixed on the upper surface of the second wedge plate from the ground can be adjusted when the first wedge plate is fixed on a plane, so that the support unit can be tightly fixed under the valve, and the rotation space of the valve is limited, thereby avoiding the accident of unplanned shutdown of the unit due to the sudden opening of the bypass system valve, and solving the problem that the existing valve device may be accidentally opened;
[0014] 2. The utility model can be stably connected to the bypass system valve of the unit through the stepped hole, and can be clamped and fastened to the bypass system valve of the unit through two fasteners cooperating with two semi-cylinders, so that it will not accidentally fall off and cause danger during long-term use, and the position of the two nuts on the threaded shaft can be adjusted to adjust the misalignment distance between the second wedge plate and the first wedge plate, so that the height of the support unit can be linearly adjusted, so that the bypass system valve of the unit is fastened and will not loosen or shake, so that it will not accidentally loosen, and long-term use is safer and more stable, and the switch of the valve is controllable, which solves the problem of danger and damage caused by accidental opening of the existing valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings;
[0016] Figure 1 This is a first axonometric structural schematic diagram of the utility model;
[0017] Figure 2 It is a second axonometric structural schematic diagram of the utility model;
[0018] Figure 3 It is a front structural schematic diagram of the utility model;
[0019] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the utility model.
[0020] Description of reference numerals in the figures: 1. Vertical clamping plate; 2. First wedge plate; 3. Second wedge plate; 4. Threaded shaft; 5. Clamping groove; 6. Nut; 7. Avoidance groove; 8. Semi-cylinder; 9. Fastener; 10. Protruding plate; 11. Fixing hole; 12. Step hole. Detailed implementation manners
[0021] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0023] It should be noted that all directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. The connection described can be a direct connection or an indirect connection.
[0024] Please refer to Figures 1-4 As shown, a valve anti-misoperation locking device includes a vertical clamping plate 1; a first wedge plate 2 is fixedly connected to the side surface of the vertical clamping plate 1; a second wedge plate 3 is slidably connected to the first wedge plate 2; a threaded shaft 4 is rotatably connected to the second wedge plate 3; a clamping groove 5 is formed in the vertical clamping plate 1; a plurality of nuts 6 are threadedly sleeved on the threaded shaft 4; a support unit is provided on the second wedge plate 3; during operation, by rotating the positions of the two nuts 6 on the threaded shaft 4, the distance that the threaded shaft 4 extends into between the vertical clamping plates 1 can be adjusted, so that the distance between the first wedge plate 2 and the second wedge plate 3 can be adjusted. Thus, when the first wedge plate 2 is fixed on a plane, the ground clearance of the support unit fixed on the upper surface of the second wedge plate 3 can be adjusted, so that the support unit can be tightly fixed under the valve, and the rotation space of the valve is restricted, thereby avoiding accidents such as unplanned shutdowns caused by the sudden opening of the bypass system valve of the unit, and solving the problem that the existing valve device may be accidentally opened.
[0025] The support unit includes a fastener 9; two semi-cylinders 8 are symmetrically threaded on the fastener 9; a protruding plate 10 is fixedly connected to the upper end of the semi-cylinder 8; a stepped hole 12 is opened on the semi-cylinder 8 and the protruding plate 10; when working, the unit can be stably connected to the bypass system valve through the stepped hole 12, and the two fasteners 9 cooperate with the two semi-cylinders 8 to clamp and fasten the unit bypass system valve, so that it will not accidentally fall off and cause danger during long-term use. By adjusting the position of the two nuts 6 on the threaded shaft 4, the misalignment distance between the second wedge plate 3 and the first wedge plate 2 can be adjusted, so that the height of the support unit can be linearly adjusted, so that the bypass system valve of the unit is fastened against the distance, so that it will not loosen or shake, so that it will not accidentally loosen, and long-term use is safer and more stable. The switch of the valve is controllable, which solves the problem of accidental opening of the existing valve causing danger and damage.
[0026] The protruding plate 10 is provided with a plurality of fixing holes 11; during operation, the protruding plate 10 can be fixed to the bypass system valve of the unit using a plurality of bolts through the plurality of fixing holes 11, thereby stably connecting the support unit and the bypass system valve of the unit to prevent accidental detachment, and being safer during long-term use.
[0027] The first wedge plate 2 and the second wedge plate 3 are provided with an avoidance groove 7; when working, the avoidance groove 7 can reduce the weight of the first wedge plate 2 and the second wedge plate 3 on the one hand, and on the other hand, it is convenient to form a space for avoiding the valve handle, so that valve handles of different lengths can be adapted, thereby reducing the adaptability requirements for the valve, and being able to adapt to valves of more lengths, solving the problem of the small adaptation range of the existing valve locking device.
[0028] The first wedge plate 2 and the second wedge plate 3 have the same inclination; when working, the first wedge plate 2 and the second wedge plate 3 with the same inclination are slidably connected to each other, so that when the first wedge plate 2 is fixed, the second wedge plate 3 can move on the inclined surface of the first wedge plate 2, thereby raising the height of the upper surface of the second wedge plate 3, so as to play the function of adjusting the support height, so that after the support unit is fixed to the bypass system valve of the unit, the height of the support unit can be adjusted to support the valve, thereby preventing the valve from being accidentally opened, solving the problem of danger and damage caused by the accidental opening of the existing valve.
[0029] The upper and lower surfaces of the first wedge plate 2 and the second wedge plate 3 are parallel to each other; during operation, due to the parallelism of the upper and lower surfaces of the first wedge plate 2 and the second wedge plate 3, when the first wedge plate 2 is fixed on a plane, the upper surface of the second wedge plate 3 is also in a horizontal state, so that the support unit can be stably placed. When the support unit can be stably fixed on the bypass system valve of the unit, the movement of the valve can be restricted, so that the opening and closing of the valve can be manually controlled and will not move and cause danger under unexpected circumstances, solving the problem that the bypass system valve of the existing unit will automatically open under unexpected circumstances.
[0030] By adopting the above scheme, when the utility model is in use, the position of the two nuts 6 on the threaded shaft 4 can be rotated to adjust the distance between the threaded shaft 4 and the vertical clamping plate 1, so that the distance between the first wedge plate 2 and the second wedge plate 3 can be adjusted, so that when the first wedge plate 2 is fixed on the plane, the height of the support unit fixed on the upper surface of the second wedge plate 3 from the ground can be adjusted, so that the support unit can be tightly fixed under the valve, and the rotation space of the valve is limited, so as to avoid the unit from being accidentally opened due to the bypass system valve, resulting in unplanned shutdown and other accidents, and solve the problem that the existing valve device may be accidentally opened; through the stepped hole 12, it can be stably connected with the bypass system valve of the unit, through By means of two fasteners 9 and two semi-cylinders 8, the valve of the bypass system of the unit can be clamped and fastened, so that it will not accidentally fall off and cause danger during long-term use. By adjusting the positions of the two nuts 6 on the threaded shaft 4, the offset distance between the second wedge plate 3 and the first wedge plate 2 can be adjusted, so that the height of the support unit can be linearly adjusted, so that the valve of the bypass system of the unit is fastened and will not loosen or shake, so that it will not accidentally loosen, and long-term use is safer and more stable. The switch of the valve is controllable, which solves the problem of danger and damage caused by accidental opening of the existing valve; through multiple fixing holes 11, multiple bolts can be used to fix the protruding plate 10 on the valve of the bypass system of the unit, so as to achieve stable The support unit and the unit will not be accidentally separated due to the bypass system valve, which is safer during long-term use; the avoidance groove 7 can reduce the weight of the first wedge plate 2 and the second wedge plate 3 on the one hand, and form a space for avoiding the valve handle on the other hand, so that valve handles of different lengths can be adapted, thereby reducing the adaptability requirements for the valve and being able to adapt to valves of more lengths, solving the problem of the small adaptation range of the existing valve locking device; the first wedge plate 2 and the second wedge plate 3 with the same inclination are slidably connected to each other, so that when the first wedge plate 2 is fixed, the second wedge plate 3 can move on the inclined surface of the first wedge plate 2, thereby raising the height of the upper surface of the second wedge plate 3, so as to adjust the support height, thereby After the support unit is fixed to the bypass system valve of the unit, the height of the support unit can be adjusted to support the valve, thereby preventing the valve from opening accidentally, solving the problem of danger and damage caused by accidental opening of the existing valve; the upper and lower surfaces of the first wedge plate 2 and the second wedge plate 3 are parallel to each other, so that when the first wedge plate 2 is fixed on a plane, the upper surface of the second wedge plate 3 is also in a horizontal state, so that the support unit can be placed stably. When the support unit can be stably fixed on the bypass system valve of the unit, the movement of the valve can be restricted, so that the opening and closing of the valve can be manually controlled, and the valve will not move in an unexpected situation to cause danger, solving the problem that the bypass system valve of the existing unit will automatically open in an unexpected situation.
[0031] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0032] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.
Claims
1. A valve anti-misoperation locking device, characterized in that; It includes a vertical clamping plate (1); a first wedge plate (2) is fixedly connected to the side surface of the vertical clamping plate (1); a second wedge plate (3) is slidably connected to the first wedge plate (2); a threaded shaft (4) is rotatably connected to the second wedge plate (3); a clamping groove (5) is formed on the vertical clamping plate (1); a plurality of nuts (6) are threadedly sleeved on the threaded shaft (4); a support unit is arranged on the second wedge plate (3).
2. The valve anti-misoperation locking device according to claim 1, characterized in that: The support unit includes a fastener (9); two semi-cylinders (8) are symmetrically threadedly sleeved on the fastener (9); a protruding plate (10) is fixedly connected to the upper end of the semi-cylinder (8); a stepped hole (12) is formed on the semi-cylinder (8) and the protruding plate (10).
3. The valve anti-misoperation locking device according to claim 2, characterized in that: A plurality of fixing holes (11) are formed on the protruding plate (10).
4. The valve anti-misoperation locking device according to claim 3, characterized in that: Avoidance grooves (7) are formed on the first wedge plate (2) and the second wedge plate (3).
5. The valve anti-misoperation locking device according to claim 4, wherein: The first wedge plate (2) and the second wedge plate (3) have the same slope.
6. The valve anti-misoperation locking device according to claim 5, characterized in that: The upper and lower surfaces of the first wedge plate (2) and the second wedge plate (3) are parallel to each other.