Emergency release valve group
By adopting a lightweight upper and lower butterfly valve structure and sealing design, the vibration and leakage problems of the emergency disengagement valve under high flow and high flow velocity conditions are solved, and an emergency disengagement valve group suitable for high flow velocity conditions is realized.
Patent Information
- Application Number
- CN202421876155.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The existing emergency disengagement valves are usually composed of large weight and large volume ball valves, which are difficult to be suitable for high flow and high flow velocity conditions, and are prone to vibration of the valve body and leakage of the medium.
Adopting an upper and lower butterfly valve structure, the butterfly plate is arranged eccentrically and forms a U-shaped groove, and the sealing ring is pressed by a bolt locking press ring to form a porous channel to improve the flow state of the medium and provide a continuous seal at high flow rates.
It realizes the lightweight and miniaturization of the emergency disengagement valve group, is suitable for high flow and high flow velocity conditions, reduces valve body vibration and medium leakage, and improves flow capacity and sealing.
Smart Images
Figure CN223165024U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of valves, and particularly relates to an emergency disconnection valve set. Background Art
[0002] Conventional emergency disconnection valves usually consist of two ball valves, which are respectively installed at the ports of two discharging pipelines and are respectively supported by two discharging arms. During discharging, the two ball valves can be butted together under the drive of the two discharging arms, and then the butting part is tightly fixed by a hoop. After the two ball valves are opened, the two discharging pipelines can be connected to discharge materials. When an accident occurs and it is necessary to urgently close and disconnect the two discharging pipelines, first, the two ball valves are closed, then the hoop is driven to open, and finally, the two discharging arms drive the two ball valves to separate. The use of ball valves in emergency disconnection valves has the following disadvantages: due to the large weight and large volume of the ball valves, it is not conducive to reducing the weight and size of the discharging arms. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an emergency disconnection valve set with light weight, small volume, suitable for high-flow and high-velocity working conditions, and capable of improving the flow state of the medium in the valve body to reduce the vibration of the valve body.
[0004] In order to solve the above problems, the technical solution adopted by the present invention is: an emergency disengagement valve group, which is characterized in that it includes: an upper butterfly valve and a lower butterfly valve, and the structure of the upper butterfly valve includes: an upper valve body, an upper flow channel that runs through the upper valve body up and down is provided in the upper valve body, a flange is provided on the upper valve body at the upper port of the upper flow channel, and an upper convex ridge is provided on the upper valve body at the lower port of the upper flow channel. An upper driving valve stem, an upper supporting valve stem, and an upper butterfly plate are provided in the upper valve body. The upper driving valve stem and the upper supporting valve stem are coaxially arranged and are respectively transversely penetrated in the upper valve body. The driving head of the upper driving valve stem extends outward from the upper valve body so that the upper driving valve stem can be driven to rotate. The inner end of the upper driving valve stem is located in the upper flow channel and is fixed to the fixing seat on the back side of the upper butterfly plate. The upper supporting valve stem is rotatable The cam is installed in the upper valve body, the inner end of the upper supporting valve stem is located in the upper flow channel, and is fixed to the fixed seat on the other side of the back of the upper butterfly plate. The upper butterfly plate can be driven to swing in the upper flow channel by the upper driving valve stem. An annular upper sealing valve seat is provided below the upper driving valve stem in the upper flow channel, and a sealing ring is installed on the positioning step of the upper butterfly plate. After the upper butterfly plate swings downward, the sealing ring thereon can be abutted against the upper sealing valve seat to seal and close the upper flow channel. The distance between the sealing surface formed by the sealing ring and the upper sealing valve seat and the lower port of the upper flow channel is not greater than the distance from the sealing surface to the axis of the upper supporting valve stem. A U-shaped groove is formed between the back of the upper butterfly plate and the two fixed seats thereon; the structure of the lower butterfly valve comprises: a lower valve body, in which a lower flow channel running through the lower valve body up and down is provided. The cam is secured to the bottom of the valve body and is secured to the cam face with an angular channel that extends outwards past the cam face of the valve body to allow the valve to rotate. The cam is secured to the bottom of the valve body and is secured to the cam face with an angular channel that extends outwards past the cam face of the valve body to allow the valve to rotate. The cam is secured to the bottom of the valve body and is secured to the cam face with an angular channel that extends outwards past the cam face of the valve body. An annular lower sealing valve seat is provided, and a sealing ring is installed on the positioning step of the lower butterfly plate. When the lower butterfly plate swings upward, the sealing ring on it can be abutted against the lower sealing valve seat for sealing to close the lower flow channel. The distance between the sealing surface formed by the sealing ring and the lower sealing valve seat and the upper port of the lower flow channel is not greater than the distance from it to the axis of the lower supporting valve stem. A U-shaped groove is formed between the back of the lower butterfly plate and the two fixed seats thereon; the lower port of the upper flow channel and the upper port of the lower flow channel are connected to each other, the upper ridges and the lower ridges can overlap so that the clamp can be held, so that the upper butterfly valve and the lower butterfly valve can be butt-joined together. When the upper butterfly valve and the lower butterfly valve are opened, the two butterfly plates and the two U-shaped grooves are located on the left and right sides respectively, and the projections of the two U-shaped grooves in the axial direction of the flow channel can be pieced together to form a channel.
[0005] Further, for the above-mentioned emergency disconnection valve group, wherein: the cross-sections of both the upper convex rib and the lower convex rib are right trapezoids.
[0006] Further, for the above-mentioned emergency disconnection valve group, wherein: the sealing ring is pressed onto the butterfly plate by a pressing ring locked by bolts.
[0007] Further, for the above-mentioned emergency disconnection valve group, wherein: bolt holes through which bolts can pass are evenly distributed on each sealing ring.
[0008] The advantages of the present utility model are as follows: In the emergency disconnection valve group, since the butterfly valve is lighter in weight and smaller in size compared with the ball valve, it is beneficial to reduce the weight and size of the unloading arm; the maximum applicable liquid flow rate of a conventional butterfly valve does not exceed 5 m / s, and it is not suitable for large-flow and high-flow-rate working conditions. Moreover, the butterfly plate of a conventional butterfly valve is often located in the middle of the flow channel, so it will disrupt the stable state of the fluid in the flow channel, easily causing vibration of the series-connected butterfly valves under high fluid flow rates, which is extremely harmful to the equipment. However, in the present utility model, the butterfly plates of the two butterfly valves are both set with increased eccentricity, so that after the two butterfly valves are opened, they can be more biased towards the left and right sides and do not block the high-flow-rate position in the middle of the butterfly valves. And since each valve stem is composed of a driving valve stem and a supporting valve stem, a U-shaped groove can be formed on the back of the butterfly plate, thereby increasing the cross-sectional area of the flow channel, enhancing the flow capacity, and being more suitable for large-flow and high-flow-rate working conditions. When the two butterfly valves are fully opened, from the axial projection, a porous channel is formed in the valve body flow channel, and the middle of the porous channel is approximately circular, which is beneficial to improving the fluid flow state in the valve body, eliminating the valve vibration problem caused by high flow rates when the butterfly valves are used in series, and avoiding accidents and hazards caused by vibration of the unloading arm. In addition, since the butterfly plates of the two butterfly valves are both set with increased eccentricity, after the two butterfly valves are closed, the remaining space between the two butterfly valves becomes smaller, and the medium remaining here is relatively reduced. When the upper butterfly valve and the lower butterfly valve are disconnected emergently, the externally leaked medium is also correspondingly reduced; bolt holes are evenly distributed on the sealing ring, and under the action of high-flow-rate medium, a continuous and uniform pressure can be applied to the sealing ring, making the sealing ring more suitable for high-flow-rate working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic structural diagram of the emergency disconnection valve group described in the present utility model.
[0010] Figure 2 For Figure 1 the top view structural diagram.
[0011] Figure 3 For Figure 2 the sectional structural diagram taken along A-A in
[0012] Figure 4 For Figure 2 the sectional structural diagram taken along B-B in
[0013] Figure 5 Schematic three-dimensional structure diagram when the emergency disconnection valve group described in the present utility model is closed.
[0014] Figure 6 Schematic sectional structure diagram when the emergency disconnection valve group described in the present utility model is opened.
[0015] Figure 7 For Figure 6 schematic top view structure diagram.
[0016] Figure 8 Schematic three-dimensional structure diagram when the emergency disconnection valve group described in the present utility model is opened. Specific embodiments
[0017] The present utility model will be further described in detail below in conjunction with specific embodiments and the accompanying drawings.
[0018] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, the emergency disconnection valve group includes an upper butterfly valve 1 and a lower butterfly valve 2. The structure of the upper butterfly valve 1 includes an upper valve body 3. In the upper valve body 3, there is an upper flow channel 4 penetrating the upper valve body 3 vertically. On the upper valve body 3 at the upper port of the upper flow channel 4, there is a flange 5. On the upper valve body 3 at the lower port of the upper flow channel 4, there is an upper convex rib 6. In the upper valve body 3, there are an upper driving valve rod 7, an upper supporting valve rod 8, and an upper butterfly plate 9. The upper driving valve rod 7 and the upper supporting valve rod 8 are coaxially arranged and respectively penetrate the upper valve body 3 horizontally. The driving head of the upper driving valve rod 7 extends out of the upper valve body 3, so that the upper driving valve rod 7 can be driven to rotate. The inner end of the upper driving valve rod 7 is located in the upper flow channel 4 and is fixed to a fixed seat 10 on one side of the back of the upper butterfly plate 9. The upper supporting valve rod 8 is rotatably installed in the upper valve body 3. The inner end of the upper supporting valve rod 8 is located in the upper flow channel 4 and is fixed to the fixed seat 10 on the other side of the back of the upper butterfly plate 9. The upper butterfly plate 9 can be driven by the upper driving valve rod 7 to swing in the upper flow channel 4. An annular upper sealing valve seat 11 is arranged below the upper driving valve rod 7 in the upper flow channel 4. A sealing ring 12 is installed on the positioning step of the upper butterfly plate 9. After the upper butterfly plate 9 swings downward, the sealing ring 12 on it can abut against the upper sealing valve seat 11 to seal and close the upper flow channel 4. The distance from the sealing surface formed by the abutment of the sealing ring 12 and the upper sealing valve seat 11 to the lower port of the upper flow channel 4 is not greater than its distance to the axis of the upper supporting valve rod 8. A U-shaped groove 13 is formed between the back of the upper butterfly plate 9 and the two fixed seats 10 on it;The structure of the lower butterfly valve 2 includes: a lower valve body 14, a lower flow channel 15 is provided in the lower valve body 14 and passes through the lower valve body 14 up and down, a flange 5 is provided on the lower valve body 14 at the lower end of the lower flow channel 15, a lower convex ridge 16 is provided on the lower valve body 14 at the upper end of the lower flow channel 15, a lower driving valve stem 17, a lower supporting valve stem 18, and a lower butterfly plate 19 are provided in the lower valve body 14, and the lower driving valve stem 17 and the lower supporting valve stem 18 are coaxially arranged and are respectively transversely penetrated in the lower valve body 14. The driving head of the lower driving valve stem 17 extends outward from the lower valve body 14, so that the lower driving valve stem 17 can be driven to rotate. The inner end of the lower driving valve stem 17 is located in the lower flow channel 15 and is fixed to the fixing seat 10 on one side of the back of the lower butterfly plate 19. The lower supporting valve stem 18 is rotatably installed in the lower valve body 14. The inner end of the lower supporting valve stem 18 is located in the lower flow channel 15 and is fixed to the fixing seat 10 on the other side of the back of the lower butterfly plate 19. The lower butterfly plate 19 can be driven by the lower driving valve stem 17. 9 swings in the lower flow channel 15. An annular lower sealing valve seat 20 is provided above the lower driving valve stem 17 of the lower flow channel 15. A sealing ring 12 is installed on the positioning step of the lower butterfly plate 19. When the lower butterfly plate 19 swings upward, the sealing ring 12 on it can abut against the lower sealing valve seat 20 to seal and close the lower flow channel 15. The distance between the sealing surface formed by the abutment between the sealing ring 12 and the lower sealing valve seat 20 and the upper port of the lower flow channel 15 is not greater than the distance between it and the axis of the lower support valve stem 18. A U-shaped groove 13 is formed between the back of the lower butterfly plate 19 and the two fixing seats 10 thereon. The lower end of the upper flow channel 4 and the upper end of the lower flow channel 15 are connected. The upper ribs 6 and lower ribs 16 can overlap to allow the clamp to hold, thereby connecting the upper butterfly valve 1 and the lower butterfly valve 2. When the upper butterfly valve 1 and the lower butterfly valve 2 are opened, the two butterfly plates and the two U-shaped grooves 13 are located on the left and right sides respectively, and the projections of the two U-shaped grooves 13 in the axial direction of the flow channel can be combined to form a channel.
[0019] In this embodiment, the cross-sections of the upper and lower ribs 6 and 16 are both trapezoidal, which facilitates the clamping connection. The sealing ring 12 is pressed against the butterfly plate by a pressure ring locked with bolts. Each sealing ring 12 is provided with bolt holes for the passage of bolts.
[0020] The two butterfly valves are respectively installed on the ports of the two unloading pipes and are supported by the two unloading arms. During unloading, the upper butterfly valve and the lower butterfly valve are connected together under the drive of the two unloading arms, and then the joints are clamped and fixed by a clamp. After the upper butterfly valve and the lower butterfly valve are opened, the two unloading pipes can be connected for unloading. When an accident occurs and the two unloading pipes need to be urgently closed and disconnected, the two butterfly valves are closed first, and then the clamp is driven to open. Finally, the two butterfly valves are driven to separate by the two unloading arms.
Claims
1. Emergency disconnection valve set, characterized in that: include: The upper butterfly valve and the lower butterfly valve, the structure of the upper butterfly valve includes: an upper valve body, an upper flow channel that runs through the upper valve body up and down, a flange is provided on the upper valve body at the upper port of the upper flow channel, and an upper convex ridge is provided on the upper valve body at the lower port of the upper flow channel, an upper driving valve stem, an upper supporting valve stem and an upper butterfly plate are provided in the upper valve body, the upper driving valve stem and the upper supporting valve stem are coaxially arranged and respectively pass through the upper valve body laterally, the driving head of the upper driving valve stem extends outward from the upper valve body, so that the upper driving valve stem can be driven to rotate, the inner end of the upper driving valve stem is located in the upper flow channel and is fixed to the fixed seat on the back side of the upper butterfly plate, the upper supporting valve stem is rotatably installed in the upper valve body, the inner end of the upper supporting valve stem is located in the upper flow channel and is fixed to the upper butterfly plate The fixed seat on the other side of the back is fixed, and the upper butterfly plate can be driven to swing in the upper flow channel by the upper driving valve stem. An annular upper sealing valve seat is provided below the upper driving valve stem in the upper flow channel, and a sealing ring is installed on the positioning step of the upper butterfly plate. After the upper butterfly plate swings downward, the sealing ring thereon can be abutted against the upper sealing valve seat for sealing and close the upper flow channel. The distance between the sealing surface formed by the abutment of the sealing ring and the upper sealing valve seat and the lower port of the upper flow channel is not greater than the distance from the sealing surface to the axis of the upper supporting valve stem. A U-shaped groove is formed between the back of the upper butterfly plate and the two fixed seats thereon; the structure of the lower butterfly valve includes: a lower valve body, a lower flow channel running through the lower valve body up and down is provided in the lower valve body, a flange is provided on the lower valve body at the lower port of the lower flow channel, and a flange is provided on the lower valve body at the lower port of the lower flow channel. A lower convex ridge is provided on the lower valve body at the upper port of the flow channel, and a lower driving valve stem, a lower supporting valve stem and a lower butterfly plate are provided in the lower valve body. The lower driving valve stem and the lower supporting valve stem are coaxially arranged and are respectively transversely penetrated in the lower valve body. The driving head of the lower driving valve stem extends outward from the lower valve body so that the lower driving valve stem can be driven to rotate. The inner end of the lower driving valve stem is located in the lower flow channel and is fixed to the fixed seat on one side of the back of the lower butterfly plate. The lower supporting valve stem is rotatably installed in the lower valve body, and the inner end of the lower supporting valve stem is located in the lower flow channel and is fixed to the fixed seat on the other side of the back of the lower butterfly plate. The lower butterfly plate can be driven to swing in the lower flow channel by the lower driving valve stem, and an annular lower sealing valve is provided above the lower driving valve stem in the lower flow channel. The lower butterfly plate is a valve seat, and a sealing ring is installed on the positioning step of the lower butterfly plate. When the lower butterfly plate swings upward, the sealing ring on it can be pressed against the lower sealing valve seat for sealing and close the lower flow channel. The distance between the sealing surface formed by the sealing ring and the lower sealing valve seat and the upper port of the lower flow channel is not greater than the distance from it to the axis of the lower supporting valve stem. A U-shaped groove is formed between the back of the lower butterfly plate and the two fixed seats thereon; the lower port of the upper flow channel and the upper port of the lower flow channel are connected to each other, the upper convex ribs and the lower convex ribs can overlap so that the clamp can be held, so that the upper butterfly valve and the lower butterfly valve can be butt-joined together. When the upper butterfly valve and the lower butterfly valve are opened, the two butterfly plates and the two U-shaped grooves are located on the left and right sides respectively, and the projections of the two U-shaped grooves in the axial direction of the flow channel can be pieced together into a channel.
2. The emergency disconnection valve group according to claim 1, wherein: The cross sections of the upper convex ribs and the lower convex ribs are both right-angled trapezoidal.
3. The emergency disconnection valve set according to claim 1, characterized in that: The sealing ring is pressed against the butterfly plate by a compression ring locked by bolts.
4. The emergency disconnection valve set according to claim 3, characterized in that: The bolt holes through which bolts can pass are evenly distributed on each sealing ring.