Emergency cut-off type stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to an emergency cut-off type stop valve which comprises a valve body, a high platform is arranged at the upper end of the valve body, and a cut-off mechanism is arranged in the valve body. An oil cylinder is movably arranged in the high platform, a rotating shaft is movably arranged at the upper end of the oil cylinder through a bearing, and the rotating shaft is in threaded connection with the upper end of the high platform. When an emergency occurs, the oil pumping mechanism can be rapidly started at the moment of triggering of the emergency, hydraulic oil is rapidly pumped into the oil cylinder, the piston and the valve rod are pushed by the hydraulic oil, the valve plate is rapidly and tightly attached to the valve seat in a short time, and a fluid channel is rapidly cut off; compared with the conditions that a traditional manual stop valve depends on manual operation in emergency, the response speed is greatly influenced by human factors, and an electric stop valve and a pneumatic stop valve are limited by the stability of a power source and the stability of an air source, the device can make a response in the first time, and further deterioration of dangerous situations is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valve technology, specifically an emergency shut-off valve. Background Technology

[0002] The safe operation of fluid transport pipelines is crucial in many fields, including industrial production, urban infrastructure construction, and energy transmission. Especially when handling hazardous media such as flammable and explosive gases and toxic and harmful liquids, it is essential to be able to quickly and effectively cut off the fluid supply in the event of an accident, such as a pipeline rupture or equipment failure, to prevent the accident from escalating and to minimize casualties and property damage.

[0003] Currently, most gate valves on the market are operated manually during normal operation. The operator moves the valve stem up and down by rotating a handwheel or similar means, causing the valve plate to engage or disengage from the valve seat, thus closing or opening the valve. This manual operation method offers a certain degree of reliability and stability in daily use, and is relatively inexpensive.

[0004] However, the limitations of manual operation become apparent in emergency situations. Manual operation requires on-site personnel, and the response speed depends entirely on the operator's reaction time and skill level. In some sudden emergencies, such as fires or earthquakes, operators may not be able to reach the valve in time, or may make operational errors due to nervousness, thus failing to quickly shut off the fluid passage. Utility Model Content

[0005] The purpose of this invention is to provide an emergency shut-off valve to solve the problems mentioned in the background art.

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

[0007] Emergency shut-off valves, including

[0008] The valve body has a raised platform at its upper end and a shut-off mechanism inside the valve body.

[0009] A hydraulic cylinder is movably installed inside the platform, and a rotating shaft is movably installed at the upper end of the hydraulic cylinder via a bearing. The rotating shaft is threadedly connected to the upper end of the platform.

[0010] An oil pumping mechanism is provided between the oil cylinder and the outside of the platform.

[0011] Preferably, the cutting mechanism includes a valve seat, which is provided in the middle of the inner side of the valve body, and a valve stem is vertically provided in the lower part of the inside of the oil cylinder. A valve plate is fixedly installed at the bottom end of the valve stem, and the valve plate and the valve seat are on the same central axis.

[0012] Preferably, the oil pumping mechanism includes a micro oil pump, which is fixedly installed in the middle of the outer side of the platform. An oil storage tank is provided at the bottom end of the micro oil pump through a flange. A U-shaped oil pipe is provided between the upper end of the micro oil pump and the interior of the platform. A sleeve that is movably connected to the right end of the U-shaped oil pipe is provided at the upper left side of the oil cylinder. An oil inlet connected to the sleeve is provided at the upper left side of the oil cylinder.

[0013] Preferably, the pumping mechanism further includes a piston, with the piston disposed at the top of the valve stem, and a spring disposed between the oil cylinder and the piston and located outside the valve stem;

[0014] Preferably, a clamp is provided on the outside of the platform, and the oil storage cylinder is clamped and fixed to the clamp;

[0015] Preferably, a switching valve is provided between the U-shaped oil pipe and the micro oil pump.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This emergency shut-off valve can quickly activate its pump mechanism in the event of an emergency, rapidly pumping hydraulic oil into the cylinder. The hydraulic oil pushes the piston and valve stem, causing the valve plate to quickly and tightly adhere to the valve seat, thus rapidly cutting off the fluid passage. Compared to traditional manual shut-off valves, which rely on manual operation in emergencies and whose response speed is greatly affected by human factors, and electric and pneumatic shut-off valves, which are limited by the stability of power and air supply, this device can react immediately and effectively prevent the dangerous situation from deteriorating further. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall main structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Valve body; 2. Platform; 3. Oil cylinder; 4. Rotary shaft; 5. Valve seat; 6. Valve stem; 7. Valve plate; 8. Miniature oil pump; 9. Flange; 10. Oil reservoir; 11. U-shaped oil pipe; 12. Sleeve; 13. Oil inlet; 14. Piston; 15. Spring; 16. Clamp; 17. Switch valve. Detailed Implementation

[0023] 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.

[0024] like Figure 1-4 As shown, this utility model provides a technical solution:

[0025] An emergency shut-off valve includes a valve body 1, with a platform 2 at the upper end of the valve body 1. A shut-off mechanism is located inside the valve body 1, including a valve seat 5. The valve seat 5 is located in the middle of the inner side of the valve body 1. A valve stem 6 is vertically arranged below the interior of a cylinder 3, with a valve plate 7 fixedly mounted at the bottom end of the valve stem 6. The valve plate 7 and the valve seat 5 are on the same central axis. The cylinder 3 is movably arranged inside the platform 2, with a rotating shaft 4 movably arranged at the upper end of the cylinder 3 via a bearing. The rotating shaft 4 is threadedly connected to the upper end of the platform 2. An oil pumping mechanism is located between the cylinder 3 and the exterior of the platform 2, including a miniature oil pump 8. A miniature oil pump 8 is fixedly mounted in the middle of the outer side of the platform 2. Pump 8, with an oil reservoir 10 installed at the bottom end of the micro oil pump 8 via flange 9, a U-shaped oil pipe 11 installed between the upper end of the micro oil pump 8 and the interior of the platform 2, a sleeve 12 installed at the upper left side of the oil cylinder 3 and movably connected to the right end of the U-shaped oil pipe 11, an oil inlet 13 connected to the sleeve 12 installed at the upper left side of the oil cylinder 3, the pumping mechanism also includes a piston 14, a piston 14 installed at the top of the valve stem 6, a spring 15 installed between the oil cylinder 3 and the piston 14 and located outside the valve stem 6, a clamp 16 installed outside the platform 2, the oil reservoir 10 is clamped and fixed to the clamp 16, and a switch valve 17 is installed between the U-shaped oil pipe 11 and the micro oil pump 8;

[0026] In this embodiment, under normal operating conditions, the emergency shut-off valve uses manual rotation of the shaft 4 to control the opening and closing of the valve plate 7, completely eliminating the dependence on continuous operation of the oil pump. Compared with traditional hydraulic emergency shut-off valves, there is no need for the oil pump to continuously pump hydraulic oil into the cylinder 3 to maintain the valve opening, which significantly reduces energy consumption. Continuous operation of the oil pump not only consumes a lot of electrical energy and increases operating costs, but also causes the oil pump components to wear out faster over a long period of time, greatly increasing the probability of failure. This device avoids the continuous operation of the oil pump, reduces the probability of equipment failure, improves the reliability and stability of the entire system, and reduces maintenance costs and downtime.

[0027] Furthermore, in the event of an emergency, the pumping mechanism can be activated rapidly the instant the emergency is triggered, quickly pumping hydraulic oil into the cylinder 3. The hydraulic oil pushes the piston 14 and the valve stem 6, causing the valve plate 7 to quickly and tightly fit against the valve seat 5 in a short time, thus achieving rapid cut-off of the fluid passage. Compared with traditional manual shut-off valves that rely on manual operation in emergency situations and whose response speed is greatly affected by human factors, and electric and pneumatic shut-off valves that are limited by the stability of power and air supply, this device can react immediately and effectively prevent the dangerous situation from deteriorating further.

[0028] Working Principle: Under normal operation, the valve plate 7 is controlled by manual operation. When the valve needs to be opened, the operator manually rotates the shaft 4. Since the shaft 4 is threaded to the upper end of the platform 2 and is movably mounted on the upper end of the cylinder 3 through a bearing, the rotation of the shaft 4 drives the cylinder 3 to move upward, thereby causing the valve rod 6 inside the cylinder 3 to move upward. The valve plate 7 at the bottom of the valve rod 6 moves away from the valve seat 5, the valve opens, and the fluid can flow normally in the valve body 1. To close the valve, the shaft 4 is rotated in the opposite direction, the cylinder 3 moves downward, and the valve rod 6 pushes the valve plate 7 downward until the valve plate 7 is tightly fitted with the valve seat 5, achieving a seal and cutting off the fluid passage. In case of an emergency, the fluid passage needs to be cut off quickly, at which point the pump mechanism starts working. After the emergency is triggered, the micro oil pump 8 starts quickly and the switch valve 17 is opened at the same time. The oil pump draws hydraulic oil from the oil reservoir 10, which is fixed to the outside of the platform 2 by the clamp 16, and delivers it to the cylinder 3 through the U-shaped oil pipe 11, sleeve 12, and oil inlet 13. Hydraulic oil entering cylinder 3 acts on piston 14 fixed to the top of valve stem 6, generating pressure that overcomes the spring force of spring 15, pushing piston 14 and valve stem 6 downwards rapidly. Valve stem 6 drives valve plate 7 to descend quickly and fit tightly against valve seat 5, closing the valve in a short time and preventing further escalation of the dangerous situation. Thus, this shut-off valve, through manual operation in conjunction with the pumping mechanism, ensures the safe and stable operation of the system under different working conditions.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An emergency shut-off valve, characterized in that: The device includes a valve body (1), a platform (2) is provided at the upper end of the valve body (1), a cutting mechanism is provided inside the valve body (1); an oil cylinder (3) is movably provided inside the platform (2), a rotating shaft (4) is movably provided at the upper end of the oil cylinder (3) through a bearing, and the rotating shaft (4) is threadedly connected to the upper end of the platform (2); an oil pumping mechanism is provided between the oil cylinder (3) and the outside of the platform (2).

2. The emergency shut-off valve according to claim 1, characterized in that: The cutting mechanism includes a valve seat (5), which is provided in the middle of the inner side of the valve body (1). A valve stem (6) is vertically provided in the lower part of the inside of the oil cylinder (3). A valve plate (7) is fixedly installed at the bottom of the valve stem (6). The valve plate (7) and the valve seat (5) are on the same central axis.

3. The emergency shut-off valve according to claim 1, characterized in that: The oil pumping mechanism includes a micro oil pump (8), which is fixedly installed in the middle of the outer side of the platform (2). An oil storage tank (10) is provided at the bottom of the micro oil pump (8) through a flange (9). A U-shaped oil pipe (11) is provided between the upper end of the micro oil pump (8) and the interior of the platform (2). A sleeve (12) is provided at the upper left side of the oil cylinder (3) and is movably connected to the right end of the U-shaped oil pipe (11). An oil inlet (13) is provided at the upper left side of the oil cylinder (3) and is connected to the sleeve (12).

4. The emergency shut-off valve according to claim 2, characterized in that: The oil pumping mechanism also includes a piston (14), a piston (14) is provided at the top of the valve stem (6), and a spring (15) is provided between the oil cylinder (3) and the piston (14) and outside the valve stem (6).

5. The emergency shut-off valve according to claim 3, characterized in that: A clamp (16) is provided on the outside of the platform (2), and the oil storage cylinder (10) is clamped and fixed to the clamp (16).

6. The emergency shut-off valve according to claim 3, characterized in that: A switching valve (17) is provided between the U-shaped oil pipe (11) and the micro oil pump (8).

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