Underwater float-type butterfly valve capable of being remotely controlled

Abstract

The utility model relates to the technical field of valves, in particular to an underwater float-type butterfly valve capable of being remotely controlled. Comprising a butterfly valve, a buoy and a crank, the butterfly valve comprises a valve body, a butterfly plate and a valve rod, and the valve body is of a hollow tubular structure; the butterfly plate is mounted in the valve body; the valve rod penetrates through the valve body and is connected with the butterfly plate; the buoy is of a cavity structure, is used for providing power for opening and closing of the butterfly valve and comprises a first stop valve and a second stop valve, and the first stop valve is arranged at the upper end of the buoy; the second stop valve is arranged at the lower end of the buoy; one end of the crank is connected with the valve rod, and the other end of the crank is connected with the buoy. Compared with a valve adopting a circuit for remote control in the prior art, a mechanical structure is adopted, and the valve is simpler and more reliable in structure, lower in maintenance cost and high in popularization value.

Description

Technical Field

[0001] This utility model relates to the field of pipeline valve technology, specifically to a remotely controllable underwater float butterfly valve. Background Technology

[0002] Valves are devices used in fluid systems to control the direction, pressure, and flow rate of fluids, enabling the control of the flow or cessation of media within piping or equipment. Valve control is often performed manually, such as by hand or with the aid of tools. However, in special cases involving underground water transport, such as lakes or rivers, when it is necessary to cut off the media within the pipeline, manually controlled valves require technicians to travel underwater to operate them manually. This is not only complex but also poses safety hazards.

[0003] To address this issue, remote-controlled valves have emerged. These valves use remote signals to drive actuators, enabling opening, closing, and regulation of the valve. Their core function lies in translating control commands into mechanical actions and forming a closed-loop control system through sensor feedback. However, existing remote-controlled valves often involve complex control circuits, resulting in high costs and difficulties in maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a remotely controllable underwater float butterfly valve. Compared with the prior art, this invention abandons the method of remotely controlling the valve using circuits and adopts a mechanical structure to realize the remote opening or closing of the underwater valve from the surface.

[0005] The technical solution of this utility model is: a remotely controllable underwater float-type butterfly valve, comprising:

[0006] A butterfly valve includes a valve body, a butterfly plate, and a valve stem. The valve body is a hollow tubular structure and is the main structure of the butterfly valve. The butterfly plate is installed in the valve body and is used to control the flow of the medium in the valve body. The valve stem passes through the valve body and is connected to the butterfly plate to control the rotation of the butterfly plate.

[0007] The float, which has a hollow structure, is used to provide power for the opening and closing of the butterfly valve. It includes a first shut-off valve and a second shut-off valve. The first shut-off valve is located at the upper end of the float, and the second shut-off valve is located at the lower end of the float.

[0008] A crank connects the butterfly valve and the float, and is used to transmit the power provided by the float. One end of the crank is connected to the valve stem, and the other end is connected to the float.

[0009] According to the present invention, a remotely controllable underwater float-type butterfly valve further includes a first connecting part, the first connecting part including a base plate, a cover plate and a connecting plate, the base plate being connected to the valve body, the valve stem passing through the base plate and connected to the crank; the cover plate and the base plate being located on both sides of the crank; one end of the connecting plate being connected to the base plate and the other end being connected to the cover plate.

[0010] According to the present invention, there is a remotely controllable underwater float butterfly valve, wherein there are at least two connecting plates, and the two connecting plates limit the rotation angle of the crank.

[0011] According to the present invention, an underwater float-type butterfly valve that can be remotely controlled has a crank rotation angle range of no more than 90°.

[0012] According to the present invention, a remotely controllable underwater float-type butterfly valve further includes a second connecting part, the second connecting part including a leg and a connecting surface, the leg being used to connect the float; the connecting surface being connected to the leg and used to connect the crank.

[0013] According to the present invention, an underwater float-type butterfly valve that can be remotely controlled is provided. The float further includes a power component, which includes a conduit and a three-way ball valve. One end of the conduit is connected to the first shut-off valve, and the other end is connected to the three-way ball valve. One end of the three-way ball valve is connected to the conduit, and one end is used for air supply, while the other end is used for connection to a high-pressure air source.

[0014] According to the present invention, an underwater float-type butterfly valve that can be remotely controlled has a weight less than the buoyancy force when the float is empty of water, and a total weight greater than the buoyancy force when the float is full of water.

[0015] According to the present invention, an underwater float-type butterfly valve that can be remotely controlled has a torque generated by its own buoyancy when the float is empty of water, which is greater than the rated torque of the butterfly valve; and a torque generated by its own sinking when the float is full of water, which is greater than the rated torque of the butterfly valve.

[0016] The advantages of this utility model are:

[0017] 1. This utility model is a mechanical underwater valve that can be remotely controlled to open and close. Compared with the existing technology of valves that are remotely controlled by circuits, this utility model has a simpler and more reliable structure and lower maintenance costs.

[0018] 2. This utility model includes a first connecting part, which can effectively increase the connection strength between the crank and the valve stem;

[0019] 3. The connecting plate of the first connecting part of this utility model not only serves to connect the base plate and the cover plate, but also limits the rotation range of the crank, ensuring the stability of the butterfly valve when switching between opening and closing.

[0020] 4. The connecting plate of the first connecting part of this utility model limits the rotation range of the crank to no more than 90°, thus avoiding the reduction of the sealing performance of the butterfly valve when it is in the closed state due to excessive crank rotation;

[0021] 5. The second connecting part of this utility model can effectively increase the connection strength between the crank and the float, and avoid the direct connection between the crank and the float, which would reduce the sealing of the float at the connection point and cause the float to leak.

[0022] 6. The power component of the float of this utility model can effectively control the float to rise or sink, thereby realizing remote control of the opening and closing of the butterfly valve.

[0023] 7. The net weight of the float of this utility model is less than the buoyancy it experiences, which ensures the upward floating force of the float when emptying water;

[0024] 8. The total weight of the pontoon when fully loaded is greater than its own buoyancy, thus ensuring the sinking power of the pontoon when fully loaded with water.

[0025] 9. The torque generated by the float when it is unloaded is greater than the rated torque of the butterfly valve, which ensures that the float can generate sufficient torque to drive the valve stem and the butterfly valve to rotate when it is unloaded.

[0026] 10. The torque generated by the sinking of the float when it is fully loaded is greater than the rated torque of the butterfly valve, ensuring that the float can generate sufficient torque to drive the valve stem and butterfly valve to rotate when fully loaded. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the cross-section of the butterfly valve of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the first connecting part connecting to the crank of this utility model;

[0031] Figure 4This is a schematic diagram of the structure of the second connecting part of this utility model connecting to the crank.

[0032] Figure 5 This is a schematic diagram illustrating the working principle of the power assembly of the float of this utility model;

[0033] Wherein: 1-Butterfly valve; 11-Valve body; 12-Butterfly plate; 13-Valve stem; 2-Float; 21-First shut-off valve; 22-Second shut-off valve; 23-Conduit; 24-Three-way ball valve; 3-Crank; 4-First connecting part; 41-Base plate; 42-Cover plate; 43-Connecting plate; 5-Second connecting part; 51-Leg; 52-Connecting surface. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] This utility model relates to a remotely controllable underwater float butterfly valve. Compared with the prior art, this utility model abandons the method of remotely controlling the valve using circuits and adopts a mechanical structure to realize the opening or closing of the underwater valve remotely from the water. The structure is simpler and more reliable, and the maintenance cost is lower.

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0039] A remotely controllable underwater float-type butterfly valve, specifically, such as Figure 1, 2 As shown, the device includes: a butterfly valve 1, a float 2, and a crank 3. The butterfly valve 1 includes a valve body 11, a butterfly plate 12, and a valve stem 13. The valve body 11 is a hollow tubular structure and is the main structure of the butterfly valve 1. The butterfly plate 12 is installed inside the valve body 11 and is used to control the flow of the medium inside the valve body 11. The valve stem 13 passes through the valve body 11 and is connected to the butterfly plate 12, and is used to control the rotation of the butterfly plate 12. The float 2 is a hollow structure and is used to provide power for the opening and closing of the butterfly valve 1. It includes a first shut-off valve 21 and a second shut-off valve 22. The first shut-off valve 21 is located at the upper end of the float 2. The second shut-off valve 22 is located at the lower end of the float 2. The crank 3 connects the butterfly valve 1 and the float 2 and is used to transmit the power provided by the float 2. One end of the crank 3 is connected to the valve stem 13, and the other end is connected to the float 2.

[0040] When remote control of the underwater float-type butterfly valve is required, open the first shut-off valve 21 and the second shut-off valve 22. High-pressure gas is injected into the float 2 through the first shut-off valve 21, and all the water in the float 2 is emptied through the second shut-off valve 22. This causes the float 2 to tend to move upward due to buoyancy. Since the float 2 is connected to the crank 3, and the other end of the crank 3 is fixedly connected to the butterfly valve 1, the float 2 will actually rotate counterclockwise around the butterfly valve 1 with the crank 3. The crank 3 further drives the valve stem 13 to rotate, and the valve stem 13 drives the butterfly plate 12 to rotate to a horizontal state, so that the butterfly valve is in the open state. Finally, close the first shut-off valve 21 and the second shut-off valve 22 to keep the float 2 in an unloaded state.

[0041] When remote control of the underwater float-type butterfly valve is required, the first shut-off valve 21 and the second shut-off valve 22 are opened. The high-pressure gas inside the float 2 is discharged into the air through the first shut-off valve 21, putting the float 2 into a negative pressure state. A large amount of water is drawn in through the second shut-off valve 22, causing the float 2 to tend to move downwards due to its own weight and the weight of the water. Since the float 2 is connected to the crank 3, and the other end of the crank 3 is fixedly connected to the butterfly valve 1, the float 2 will actually rotate clockwise around the butterfly valve 1 with the crank 3. The crank 3 further drives the valve stem 13 to rotate, and the valve stem 13 drives the butterfly plate 12 to rotate to a vertical state, so that the butterfly valve is in the closed state. Finally, the first shut-off valve 21 and the second shut-off valve 22 are closed to keep the float 2 in a fully loaded state.

[0042] In some embodiments, such as Figure 3 As shown, the present invention also includes a first connecting part 4. In this embodiment, the first connecting part 4 includes a base plate 41, a cover plate 42 and a connecting plate 43. The base plate 41 is connected to the valve body 11, and the valve stem 13 passes through the base plate 41 and is connected to the crank 3. The cover plate 42 and the base plate 41 are located on both sides of the crank 3. One end of the connecting plate 43 is connected to the base plate 41 and the other end is connected to the cover plate 42.

[0043] During actual installation, the base plate 41 has an opening, one end of the valve stem 13 is passed through the base plate 41, and then the base plate 41 is connected to the valve body 11 by bolts; preferably, the end of the valve stem 13 that passes through the base plate 41 has a protrusion, and the end of the crank 3 that is connected to the valve stem 13 has an opening with a groove inside the opening. When connecting the valve stem 13 and the crank 3, the protrusion on the valve stem 13 is embedded into the groove in the crank 3, and the two are connected by riveting; after the crank 3 is installed, the cover plate 42 is placed on top of the crank 3, and finally the base plate 41 and the cover plate 42 are bolted together using the connecting plate 43 to complete the installation of the first connecting part 4.

[0044] Furthermore, such as Figure 3 As shown, the first connecting part 4 described above has been optimized. In this embodiment, there are at least two connecting plates 43, and the two connecting plates 43 limit the rotation angle of the crank 3.

[0045] To prevent excessive rotation of crank 3 from causing a slight rotational tendency in butterfly plate 12 after it has completed its rotation, the rotation angle of crank 3 needs to be limited. In actual operation, this utility model uses connecting plate 43 to limit the rotation of crank 3. When crank 3 rotates counterclockwise, it will eventually be blocked by connecting plate 43 above the first connecting part 4; when crank 3 rotates clockwise, it will eventually be blocked by connecting plate 43 below the first connecting part 4.

[0046] In some embodiments, such as Figure 3 As shown, the crank 3 described above has been optimized, and in this embodiment, the rotation angle of the crank 3 does not exceed 90°.

[0047] In actual operation, when the butterfly valve is closed, the butterfly plate 12 rotates from a horizontal state to a vertical state by an angle of 90°; when the butterfly valve is opened, the butterfly plate 12 rotates from a vertical state to a horizontal state by an angle of 90°. Therefore, the opening and closing of the butterfly valve can be achieved simply by controlling the crank 3 to rotate within a 90° range.

[0048] When the crank 3 rotates more than 90°, and the butterfly valve needs to be closed, the butterfly plate 12 will rotate excessively when rotating from a horizontal to a vertical position, causing it to turn back from a vertical to a horizontal position, which greatly reduces the sealing effect of the butterfly valve. When the butterfly valve needs to be opened, the butterfly plate 12 will rotate excessively when rotating from a vertical to a horizontal position, causing it to turn back from a horizontal to a vertical position, which obstructs the flow of water in the butterfly valve and reduces its working efficiency.

[0049] In some embodiments, such as Figure 4As shown, the present invention also includes a second connecting part 5. In this embodiment, the second connecting part 5 includes a leg 52 and a connecting surface 52. The leg 52 is used to connect the float 2; the connecting surface 52 is connected to the leg 52 and is used to connect the crank 3.

[0050] In actual installation, the connecting part of crank 3 is flat, while the connecting part of float 2 is curved. The flat and curved surfaces cannot be stably connected by direct contact. This utility model utilizes the multiple legs 52 of the second connecting part 5 to weld to the curved surface of float 2, and then welds the connecting surface 52 to the multiple legs 52 together, transforming the connecting part of float 2 from curved to flat. Finally, the flat connecting surface 52 is connected to the flat connecting part of crank 3 by bolts.

[0051] In some embodiments, such as Figure 1 , 5 As shown, the above-mentioned float 2 has been optimized. In this embodiment, the float 2 also includes a power assembly, which includes a conduit 23 and a three-way ball valve 24. One end of the conduit 23 is connected to the first shut-off valve 21, and the other end is connected to the three-way ball valve 24. One end of the three-way ball valve 24 is connected to the conduit 23, one end is used for air supply, and the other end is used for connection to a high-pressure air source.

[0052] When it is necessary to remotely control the opening of the underwater float butterfly valve, open one end of the three-way ball valve 24 connecting the conduit 23 to the end connected to the high-pressure air source, and close the end that is not connected to the air. This allows the high-pressure air source to flow into the float 2 from the first shut-off valve 21 through the three-way ball valve 24 and the conduit 23. The air pressure in the float 2 increases, and the water in the float 2 is discharged from the second shut-off valve 22.

[0053] When it is necessary to remotely control the closure of the underwater float-type butterfly valve, open one end of the three-way ball valve 24 connecting the conduit 23 to the empty end, and close the end connected to the high-pressure air source. This allows the high-pressure air source to be discharged from the float 2 through the first shut-off valve 21 and the conduit 23 from the empty end of the three-way ball valve 24. At the same time, the air pressure inside the float 2 decreases, and a large amount of water is drawn in from the second shut-off valve 22.

[0054] Preferably, in this embodiment, when the float 2 is empty of water, its own weight is less than the buoyancy it receives, thus ensuring the upward buoyancy of the float 2 when the water is drained.

[0055] Preferably, in this embodiment, when the float 2 is full of water, the total weight is greater than the buoyancy force, which ensures the sinking power when the float is fully loaded with water.

[0056] Preferably, in this embodiment, when the float 2 is not filled with water, the torque generated by its own buoyancy is greater than the rated torque of the butterfly valve 1, ensuring that the float can generate sufficient torque to drive the valve stem and the butterfly valve to rotate under no-load conditions;

[0057] Preferably, in this embodiment, when the float 2 is full of water, the torque generated by its own sinking is greater than the rated torque of the butterfly valve 1, ensuring that the float can generate sufficient torque to drive the valve stem and the butterfly valve to rotate when fully loaded.

[0058] 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 illustrative of the principles of this 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. A remotely controllable underwater float-type butterfly valve, characterized in that, include: A butterfly valve (1) includes a valve body (11), a butterfly plate (12), and a valve stem (13). The valve body (11) is a hollow tubular structure and is the main structure of the butterfly valve (1). The butterfly plate (12) is installed inside the valve body (11) and is used to control the flow of the medium inside the valve body (11). The valve stem (13) passes through the valve body (11) and is connected to the butterfly plate (12) to control the rotation of the butterfly plate (12). The float (2) is a hollow structure used to provide power for the opening and closing of the butterfly valve (1), and includes a first shut-off valve (21) and a second shut-off valve (22). The first shut-off valve (21) is located at the upper end of the float (2); the second shut-off valve (22) is located at the lower end of the float (2). A crank (3) is connected to the butterfly valve (1) and the float (2) for transmitting the power provided by the float (2). One end of the crank (3) is connected to the valve stem (13), and the other end is connected to the float (2).

2. The remotely controllable underwater float butterfly valve according to claim 1, characterized in that, It also includes a first connecting part (4), which includes a base plate (41), a cover plate (42) and a connecting plate (43). The base plate (41) is connected to the valve body (11), and the valve stem (13) passes through the base plate (41) and is connected to the crank (3). The cover plate (42) and the base plate (41) are located on both sides of the crank (3). One end of the connecting plate (43) is connected to the base plate (41), and the other end is connected to the cover plate (42).

3. The remotely controllable underwater float butterfly valve according to claim 2, characterized in that, There are at least two connecting plates (43), and the two connecting plates (43) limit the rotation angle of the crank (3).

4. A remotely controllable underwater float-type butterfly valve according to claim 3, characterized in that, The crank (3) has a rotation angle that does not exceed 90°.

5. A remotely controllable underwater float-type butterfly valve according to claim 1, characterized in that, It also includes a second connecting part (5), which includes a leg (51) and a connecting surface (52). The leg (51) is used to connect the float (2), and the connecting surface (52) is connected to the leg (51) to connect the crank (3).

6. A remotely controllable underwater float-type butterfly valve according to claim 1, characterized in that, The float (2) also includes a power assembly, which includes a conduit (23) and a three-way ball valve (24). One end of the conduit (23) is connected to the first shut-off valve (21), and the other end is connected to the three-way ball valve (24). One end of the three-way ball valve (24) is connected to the conduit (23), one end is used for air supply, and the other end is used for connection to a high-pressure gas source.

7. A remotely controllable underwater float-type butterfly valve according to claim 6, characterized in that, When the float (2) is not filled with water, its own weight is less than the buoyancy it experiences.

8. A remotely controllable underwater float-type butterfly valve according to claim 7, characterized in that, When the pontoon (2) is full of water, the total weight is greater than the buoyancy it experiences.

9. A remotely controllable underwater float-type butterfly valve according to claim 8, characterized in that, When the float (2) is not filled with water, the torque generated by its own buoyancy is greater than the rated torque of the butterfly valve (1).

10. A remotely controllable underwater float-type butterfly valve according to claim 9, characterized in that, When the float (2) is full of water, the torque generated by its own sinking is greater than the rated torque of the butterfly valve (1).

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