An emergency disconnect valve for automated loading arms
By controlling the movement of the flow-blocking block through the limit and triggering mechanism of the automated emergency break-off valve, the problem of inconvenient maintenance of existing break-off valves is solved, and convenient disconnection and restoration of fluid connection is achieved, thereby improving the reusability and economic benefits of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYUNGANG SHENYU PETROCHEMICAL MASCH EQUIP CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-26
AI Technical Summary
The wire rope of the existing load arm breakaway valve is inconvenient to maintain, has low economic efficiency, and is difficult to reuse after it is broken.
An automated emergency disconnect valve is adopted, which controls the movement of the flow blocking block through a limit mechanism and a trigger mechanism. The flow blocking effect is achieved by utilizing the elastic potential energy of the elastic component, and the valve can be easily reset after the pressure is restored.
It enables convenient disconnection and restoration of fluid connections, improving equipment reusability and economic efficiency.
Smart Images
Figure CN224283593U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of loading arm accessories technology, and in particular to an emergency disconnect valve for automated loading arms. Background Technology
[0002] An loading arm is a retractable tubular device mainly used for loading and unloading liquids or liquefied gases in industries such as petroleum and chemicals. It replaces the traditional hose connection method and features high safety, flexibility and long service life. It is a special equipment for fluid loading and unloading processes in the petrochemical industry.
[0003] In existing technologies, loading arms typically require a breakaway valve during use. Most existing breakaway valves are wire rope emergency breakaway valves. When the fluid pressure inside the loading arm increases to a threshold, the wire rope is broken, and the one-way valves on both sides close, thereby disconnecting the pipeline connection. However, if the wire rope of this type of emergency breakaway valve is to be reused after it is broken, the wire rope needs to be reconfigured, which is inconvenient to maintain and has low economic efficiency, so it needs to be improved. Utility Model Content
[0004] To improve the convenience and economic efficiency of reusing emergency disconnect valves, this application provides an emergency disconnect valve for automated loading arms.
[0005] The emergency disconnect valve for automated loading arms provided in this application adopts the following technical solution:
[0006] An emergency disconnect valve for automated loading arms includes a valve seat. Fixed plates are provided on the inner walls of both ends of the valve seat. Each fixed plate has a flow hole extending through it along its thickness direction for fluid passage. Two flow-blocking plates are positioned between the two fixed plates. Each flow-blocking plate has a through hole extending through it along its axis. Two flow-blocking blocks are positioned between the two flow-blocking plates. The diameter of each flow-blocking block gradually increases from the end closest to the adjacent flow-blocking plate towards the other. An inclined surface is provided on the inner wall of the through hole corresponding to the side wall of the adjacent flow-blocking block. After the flow-blocking block moves, its side wall fits against the inclined surface. An elastic member is positioned between the two flow-blocking blocks, causing them to move away from each other. Two sets of limiting mechanisms are provided within the valve seat corresponding to the flow-blocking blocks to restrict the movement of the flow-blocking blocks driven by the elastic member. A triggering mechanism is also provided within the valve seat to release the limiting mechanisms and allow the elastic member to move the flow-blocking blocks. A reset window is hinged to the surface of the valve seat.
[0007] By adopting the above technical solution, under the action of the limiting mechanism, the two flow-blocking blocks will remain stationary. At this time, the fluid can pass through the gap between the inclined surface and the flow-blocking block. When the fluid pressure increases, the triggering mechanism is triggered, which will release the limiting mechanism from restricting the flow-blocking block. The elastic component releases elastic potential energy, causing the flow-blocking block to abut against the corresponding through hole and against the inclined surface, thereby achieving the flow-blocking effect. When the pressure in the pipeline returns to normal, it is only necessary to open the reset window to reset the triggering mechanism and the two flow-blocking blocks, which is convenient for reuse and improves economic efficiency.
[0008] Preferably, the limiting mechanism includes a limiting ring plate and a plurality of limiting plates. The limiting ring plate is disposed at the end of the corresponding flow-blocking block with a larger diameter. The limiting ring plate is disposed along the circumferential direction of the flow-blocking block. The plurality of limiting plates are disposed on the inner wall of the valve seat. The limiting plates are located on the side of the limiting ring plate away from the elastic member. The limiting plates abut against the surface of the limiting ring plate. The surface of the limiting ring plate is provided with a clearance groove for the limiting plates to enter.
[0009] By adopting the above technical solution, when the limiting ring plate and the limiting piece abut against each other, the elastic component cannot apply a pushing force to the flow blocking block. When the flow blocking block rotates under the action of the triggering mechanism, the limiting piece and the relief groove coincide. After losing the abutting effect, the elastic component can drive the flow blocking block to move and fit against the inclined surface to achieve the flow blocking effect.
[0010] Preferably, the thickness of the limiting ring plate is greater than the thickness of the limiting piece, and the depth of the relief groove is consistent with the thickness of the limiting piece.
[0011] By adopting the above technical solution, the movement distance of the limiting ring plate and the flow blocking block can be limited so that they can be reset later.
[0012] Preferably, the triggering mechanism includes two rotating shafts, two rotating torsion springs, and a sleeve plate, with each of the rotating shafts, rotating torsion springs, and flow-blocking blocks corresponding to one another. The rotating shafts are coaxially connected to the end wall of the corresponding flow-blocking block with the smaller diameter. A shaped block is provided on the peripheral wall of the rotating shaft near the flow-blocking block. A shaped hole is formed on the end wall of the flow-blocking block, which is slidably connected to the rotating shaft via the shaped block. The other end of the rotating shaft passes through a through hole and is rotatably connected to a fixed plate. The rotating torsion spring is sleeved on the peripheral wall of the rotating shaft. One end of the rotating torsion spring is connected to the fixed plate, and the other end is connected to the peripheral wall of the rotating shaft. The sleeve plate is slidably connected to the peripheral wall of the rotating shaft. The surface of the sleeve plate partially blocks the flow hole. Several elastic elements are provided on the side of the sleeve plate facing the fixed plate, causing the sleeve plate to maintain a tendency to move towards the fixed plate. A limiting block is formed on the peripheral wall of the rotating shaft, and a limiting groove is formed on the surface of the sleeve plate for the limiting block to enter.
[0013] By adopting the above technical solution, when the fluid passes through the flow hole, it will come into contact with the sleeve plate. When the fluid pressure is less than the minimum extension threshold of the elastic element, the elastic element will not be stretched, and the sleeve plate will not slide. As the fluid pressure increases, the fluid washes over the surface of the sleeve plate, causing the elastic element to be stretched. This causes the limiting block to gradually detach from the limiting groove and lose the contact with the inner wall of the limiting groove. The rotating shaft will rotate under the action of the rotating torsion spring, and drive the flow blocking block to rotate together through the irregular block. After the flow blocking block rotates, the clearance groove and the limiting plate will gradually overlap, thus losing the contact function. Under the action of the elastic component, the flow blocking block will move towards the flow blocking plate. Finally, the side wall of the flow blocking block abuts against the inclined surface, cutting off the flow path and realizing the emergency break function. When the pressure returns to normal, the passage can be restored by moving the limiting ring plate through the reset window and rotating the sleeve plate. The operation is convenient and easy to reuse.
[0014] Preferably, the side of the socket plate facing the fixed plate is provided with a stop block for limiting the position of the limiting block.
[0015] By adopting the above technical solution, the maximum rotation angle of the rotating shaft can be limited to prevent the rotating shaft from causing the flow block to rotate excessively and become difficult to reset.
[0016] Preferably, the elastic component includes a pressure spring and a guide rod. Each of the two flow-blocking blocks has a guide hole on its side that is close to each other, allowing the end of the guide rod to enter. The pressure spring is sleeved on the peripheral wall of the guide rod and abuts against the flow-blocking blocks on both sides.
[0017] By adopting the above technical solution, when the triggering mechanism releases the function of the limiting mechanism, the pressure spring will release its elastic force, causing the flow blocking blocks on both sides to move away from each other and causing the sidewalls of the flow blocking blocks to abut against the inclined surface, thereby disconnecting the pipeline connection.
[0018] Preferably, the elastic member is provided in several groups, and the several groups of elastic members are evenly distributed along the circumferential direction of the end face of the flow blocking block.
[0019] By adopting the above technical solution and setting the elastic components into several groups, the two flow-blocking blocks can respond more quickly when they separate from each other, and the force uniformity of the flow-blocking blocks is also guaranteed, so that the flow-blocking blocks can slide smoothly.
[0020] Preferably, a sealing ring is provided on the peripheral wall of the flow-blocking block, and a sealing groove is provided on the inclined surface for the sealing ring to enter.
[0021] By adopting the above technical solutions, the sealing performance can be effectively improved, thereby further enhancing the flow resistance effect.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. Under the action of the limiting mechanism, the two flow blocking blocks will remain stationary relative to each other. At this time, the fluid can pass through the gap between the inclined surface and the flow blocking block. When the fluid pressure increases, the triggering mechanism is triggered. The triggering mechanism will release the limiting mechanism from the flow blocking block. The elastic component releases elastic potential energy, causing the flow blocking block to abut into the corresponding through hole and abut against the inclined surface, thereby achieving the flow blocking effect.
[0024] 2. When the pressure in the pipeline returns to normal, it is only necessary to open the reset window to reset the trigger mechanism and the two flow-blocking blocks, which facilitates reuse and improves economic efficiency. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of an emergency disconnect valve for an automated loading arm according to an embodiment of this application.
[0026] Figure 2 This is a schematic diagram of the rotating shaft and the flow-blocking block according to an embodiment of this application.
[0027] Figure 3 This is an embodiment of the present application. Figure 1 A magnified view of a portion of point A in the middle.
[0028] Explanation of reference numerals in the attached drawings: 1. Valve seat; 2. Fixing plate; 201. Flow hole; 3. Baffle plate; 301. Through hole; 302. Inclined surface; 303. Sealing groove; 4. Baffle block; 401. Irregularly shaped hole; 402. Guide hole; 403. Sealing ring; 5. Elastic component; 501. Pressure spring; 502. Guide rod; 6. Limiting mechanism; 601. Limiting ring plate; 6011. Relief groove; 602. Limiting piece; 7. Triggering mechanism; 701. Rotating shaft; 7011. Irregularly shaped block; 7012. Limiting block; 702. Rotary torsion spring; 703. Sleeve plate; 7031. Elastic component; 7032. Limiting groove; 7033. Stop block; 8. Reset window. Detailed Implementation
[0029] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0030] This application discloses an emergency disconnect valve for automated loading arms. (Refer to...) Figure 1The device includes a valve seat 1, with fixed plates 2 formed on the inner walls of both ends of the valve seat 1. The fixed plates 2 have several flow holes 201 through them along the thickness direction for fluid to pass through. The flow holes 201 are evenly distributed along the circumferential direction of the fixed plates 2. Two flow-blocking plates 3 are arranged between the two fixed plates 2. The flow-blocking plates 3 have through holes 301 through them along the thickness direction. Two flow-blocking blocks 4 are arranged between the two flow-blocking plates 3. The diameter of the flow-blocking blocks 4 gradually increases from the end closest to the adjacent flow-blocking plate 3 toward the other flow-blocking plate 3. The cross-section is trapezoidal. The inner wall of the through hole 301 has an inclined surface 302 corresponding to the side wall of the flow-blocking block 4. When the inclined surface 302 abuts against the side wall of the flow-blocking block 4, the flow-blocking effect can be achieved. In this embodiment, a sealing ring 403 is provided on the side wall of the flow-blocking block 4. A sealing groove 303 is provided on the inclined surface 302 for the sealing ring 403 to enter, thereby improving the sealing effect.
[0031] Reference Figure 1 Several sets of elastic components 5 are arranged between the two flow-blocking blocks 4. The sets of elastic components 5 are evenly distributed along the circumferential direction of the flow-blocking blocks 4. Under the action of the elastic components 5, the two flow-blocking blocks 4 maintain the tendency to move away from each other. The elastic components 5 include pressure springs 501 and guide rods 502. Several guide holes 402 are opened on the side walls of the two flow-blocking blocks 4 that are close to each other, so that the ends of the guide rods 502 can abut against each other. The pressure springs 501 are sleeved on the circumferential wall of the guide rods 502 and abut against the two flow-blocking blocks 4. When the pressure springs 501 release their elastic force, they will push the two flow-blocking blocks 4 to move away from each other.
[0032] Reference Figure 1 and Figure 2 Two sets of limiting mechanisms 6 are provided inside the valve seat 1 corresponding to the two flow-blocking blocks 4 to restrict the movement of the flow-blocking blocks 4 under the action of the elastic member 5. The limiting mechanism 6 includes a limiting ring plate 601 and several limiting pieces 602. The limiting ring plate 601 is located at the end of the corresponding flow-blocking block 4 with a larger diameter. The limiting ring plate 601 is arranged along the circumferential direction of the flow-blocking block 4. Several through holes for fluid to pass through are opened on the surface of the limiting ring plate 601. Several limiting pieces 602 are formed on the inner wall of the valve seat 1 and abut against the limiting ring plate 601 near the flow-blocking block 4. On one side of the adjacent fixed plate 2, the surface of the limiting ring plate 601 is provided with a plurality of clearance grooves 6011 for the limiting piece 602 to abut. In this embodiment, the limiting piece 602 and the corresponding clearance groove 6011 are in a misaligned state. They can only overlap after the limiting ring plate 601 is rotated. At this time, the elastic member 5 can drive the flow blocking block 4 to move. In addition, the thickness of the limiting ring plate 601 is greater than the thickness of the limiting piece 602. The thickness of the limiting piece 602 is consistent with the depth of the clearance groove 6011, thereby limiting the sliding distance of the flow blocking block 4.
[0033] Reference Figure 1 , Figure 2 and Figure 3 The valve seat 1 is also equipped with a triggering mechanism 7 for contact limiting mechanism 6 to restrict flow block 4. The triggering mechanism 7 includes two rotating shafts 701, two rotating torsion springs 702, and a sleeve plate 703. The rotating shafts 701, rotating torsion springs 702, and flow block 4 are arranged in a one-to-one correspondence. The rotating shaft 701 is located at the end of the flow block 4 with the smaller diameter. The rotating shaft 701 is coaxial with the flow block 4. The peripheral wall of the rotating shaft 701 near the flow block 4 is formed with several irregular blocks 7011. The end wall of the flow block 4 is... An irregular hole 401 is provided. The flow-blocking block 4 is sleeved through the irregular hole 401 and slidably connected to the rotating shaft 701. The other end of the rotating shaft 701 passes through the through hole 301 and is rotatably connected to the fixing plate 2. When the rotating shaft 701 rotates, the flow-blocking block 4 can be driven to rotate together under the action of the irregular block 7011. A rotating torsion spring 702 is sleeved on the peripheral wall of the rotating shaft 701. One end of the rotating torsion spring 702 is connected to the fixing plate 2, and the other end is connected to the rotating shaft 701 to drive the rotating shaft 701 to rotate.
[0034] Reference Figure 1 , Figure 2 and Figure 3 A socket plate 703 is fitted and slidably connected to a rotating shaft. Several elastic elements 7031 are provided on the side of the socket plate 703 facing the fixed plate 2. In this embodiment, the elastic elements 7031 are in the form of slide rods and springs. Under the action of the elastic elements 7031, the socket plate 703 maintains a tendency to move towards the fixed plate 2. The side of the socket plate 703 partially blocks the flow hole 201, allowing fluid to flush the socket plate 703. The tensile threshold of the elastic element 7031 is based on the pipe energy. The pressure setting is sufficient; the peripheral wall of the rotating shaft 701 is formed with a limiting block 7012, and the side of the sleeve plate 703 facing the fixed plate 2 is provided with a limiting groove 7032 for the limiting block 7012 to enter. When the limiting block 7012 disengages from the limiting groove 7032, the rotating shaft 701 will rotate under the action of the rotating torsion spring 702. The side of the sleeve plate 703 facing the fixed plate 2 is formed with a stop block 7033, which is used to abut against the limiting block 7012 to limit the excessive rotation of the rotating shaft 701.
[0035] Reference Figure 1 The valve seat 1 has a reset window 8 hinged to its surface to reset the flow block 4 and the trigger mechanism 7 when the pressure returns to normal, thereby improving the reusability of the emergency disconnect valve of this application.
[0036] The implementation principle of an emergency disconnect valve for automated loading arms in this application embodiment is as follows: When the pressure inside the loading arm increases, the fluid will more violently scour the surface of the sleeve plate 703, causing the elastic element 7031 to be stretched. The sleeve plate 703 slides relative to the rotating shaft 701. At this time, the limiting block 7012 on the rotating shaft 701 will disengage from the limiting groove 7032. Under the action of the rotating torsion spring 702, the rotating shaft 701 will rotate until the limiting block 7012 abuts against the stop block 7033 and stops rotating. The flow-blocking block 4 rotates together with the rotating shaft 701 under the drive of the irregular block 7011, so that the relief groove 6011 and the limiting plate 602 gradually overlap. Under the action of the elastic element 5, the two flow-blocking blocks 4 will move in a direction away from each other and abut against the inclined surface 302 to form a flow-blocking effect. When the pressure inside the pipeline returns to normal, it is only necessary to open the reset window 8 to reset the flow-blocking block 4 and the triggering mechanism 7. The operation is convenient, can be reused, and has high economic benefits.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An automated emergency pull-off valve for a loading arm, characterized by: The valve includes a valve seat, with fixed plates on the inner walls at both ends. Each fixed plate has a flow hole extending through it along its thickness direction for fluid passage. Two flow-blocking plates are positioned between the two fixed plates, each with a through hole extending through it along its axis. Two flow-blocking blocks are positioned between the two flow-blocking plates, with the diameter of each block gradually increasing from the end closest to the adjacent flow-blocking plate towards the other. An inclined surface is formed on the inner wall of the through hole corresponding to the side wall of the adjacent flow-blocking block. After the flow-blocking block moves, its side wall fits against the inclined surface. An elastic member is positioned between the two flow-blocking blocks, causing them to move away from each other. Two sets of limiting mechanisms are provided within the valve seat corresponding to the flow-blocking blocks to restrict the movement of the flow-blocking blocks by the elastic member. A triggering mechanism is also provided within the valve seat to release the limiting mechanisms and allow the elastic member to move the flow-blocking blocks. A reset window is hinged to the surface of the valve seat.
2. An emergency pull-off valve for automated loading arms according to claim 1, characterized in that: The limiting mechanism includes a limiting ring plate and several limiting plates. The limiting ring plate is disposed at the end of the corresponding flow-blocking block with a larger diameter. The limiting ring plate is disposed along the circumferential direction of the flow-blocking block. Several limiting plates are disposed on the inner wall of the valve seat. The limiting plates are located on the side of the limiting ring plate away from the elastic member. The limiting plates abut against the surface of the limiting ring plate. The surface of the limiting ring plate is provided with a clearance groove for the limiting plates to enter.
3. The emergency disconnect valve for automated loading arms according to claim 2, characterized in that: The thickness of the limiting ring plate is greater than the thickness of the limiting piece, and the depth of the relief groove is consistent with the thickness of the limiting piece.
4. The emergency disconnect valve for automated loading arms according to claim 1, characterized in that: The triggering mechanism includes two rotating shafts, two rotating torsion springs, and a sleeve plate. The rotating shafts, rotating torsion springs, and flow-blocking blocks correspond one-to-one. The rotating shafts are coaxially connected to the end wall of the corresponding flow-blocking block with the smaller diameter. A shaped block is provided on the peripheral wall of the rotating shaft near the flow-blocking block. The end wall of the flow-blocking block has a shaped hole. The flow-blocking block is slidably connected to the rotating shaft through the shaped block. The other end of the rotating shaft passes through the through hole and is rotatably connected to the fixed plate. The rotating torsion spring is sleeved on the peripheral wall of the rotating shaft. One end of the rotating torsion spring is connected to the fixed plate, and the other end is connected to the peripheral wall of the rotating shaft. The sleeve plate is slidably connected to the peripheral wall of the rotating shaft. The surface of the sleeve plate partially blocks the flow hole. Several elastic elements are provided on the side of the sleeve plate facing the fixed plate. The elastic elements make the sleeve plate maintain a tendency to move towards the fixed plate. A limit block is formed on the peripheral wall of the rotating shaft, and a limit groove is provided on the surface of the sleeve plate for the limit block to enter.
5. An emergency disconnect valve for automated loading arms according to claim 4, characterized in that: The side of the socket plate facing the fixed plate is provided with a stop block for limiting the position of the limiting block.
6. The emergency disconnect valve for automated loading arms according to claim 1, characterized in that: The elastic component includes a pressure spring and a guide rod. Each of the two flow-blocking blocks has a guide hole on its side that is close to each other, allowing the end of the guide rod to enter. The pressure spring is sleeved on the peripheral wall of the guide rod and abuts against the flow-blocking blocks on both sides.
7. An emergency disconnect valve for automated loading arms according to claim 6, characterized in that: The elastic member is provided in several groups, and the several groups of elastic members are evenly distributed along the circumferential direction of the end face of the flow blocking block.
8. An emergency disconnect valve for automated loading arms according to claim 1, characterized in that: A sealing ring is provided on the peripheral wall of the flow-blocking block, and a sealing groove is provided on the inclined surface for the sealing ring to enter.