Loop emergency pull-off valve

Abstract

The utility model discloses a kind of live loop type emergency pull-off valves, the utility model relates to emergency pull-off valve technical field;Including: pull-off valve pipe;Fixed plate, the outer wall of the fixed plate is fixedly connected with the outer wall of pull-off valve pipe, the outer wall of the fixed plate is fixedly connected with limiting structure, the outer wall of the limiting structure is fixedly connected with stabilizing structure, the outer wall of the stabilizing structure is slidably connected with sponge ring;The limiting structure includes second telescopic rod, the second telescopic rod is along fixed plate annular array, the outer wall of the second telescopic rod is fixedly connected with the outer wall of fixed plate, the outer wall of the second telescopic rod is fixedly connected with limit ring, by second telescopic rod and limit ring in ring limiting structure, the torsional amplitude of pull-off valve pipe can be limited, resistance to torsional force is enhanced, even if pipeline is subjected to local torsion or non-axial force, avoid the misseparation caused by accidental torsion, reduce potential safety hazard.

Description

Technical Field

[0001] This utility model relates to the field of emergency pull-off valve technology, specifically to a loop-type emergency pull-off valve. Background Technology

[0002] In industrial fluid transport systems, the slip-on emergency break valve is a key component ensuring pipeline connection safety. Its core function is to quickly and automatically separate and block fluid flow when the pipeline is subjected to axial tensile force exceeding safe limits, thus preventing safety accidents or material losses caused by pipeline rupture and media leakage. However, existing slip-on emergency break valves still have shortcomings in practical applications. Their anti-mis-separation performance is insufficient, and traditional structures have weak resistance to torsional forces. If the pipeline is subjected to local torsion or non-axial forces during daily use, the break valve is prone to mis-separation, becoming a safety hazard. To address these issues, there is an urgent need to develop a slip-on emergency break valve that can achieve anti-mis-separation through mechanical structure optimization to improve the safety and reliability of fluid transport systems. In summary, to solve the above problems, improve the efficiency and quality of emergency break valves, and reduce losses, this utility model has emerged. Utility Model Content

[0003] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a loop-type emergency pull-off valve, comprising: a pull-off valve tube; a fixed plate, the outer wall of which is fixedly connected to the outer wall of the pull-off valve tube, a limiting structure fixedly connected to the outer wall of the fixed plate, a stabilizing structure fixedly connected to the outer wall of the limiting structure, and a sponge ring slidably connected to the outer wall of the stabilizing structure; the limiting structure includes a second telescopic rod, which is arranged in a ring along the fixed plate, the outer wall of which is fixedly connected to the outer wall of the fixed plate, and a limiting ring fixedly connected to the outer wall of the second telescopic rod.

[0004] Preferably, a first telescopic rod is fixedly connected to the inner wall of the pull-off valve pipe, and a first spring is fixedly connected to the outer wall of the first telescopic rod.

[0005] Preferably, a sealing block is fixedly connected to the end of the first spring away from the first telescopic rod, and sealing rings are fixedly and symmetrically connected to the outer wall of the sealing block. In use, it serves as a safety component for pipeline connections and works in conjunction with existing rigid pipe or flexible pipe systems. Through the synergistic effect of the mechanical structure, it achieves normal flow, prevention of accidental separation, and emergency flow interruption sealing functions. Its working process is as follows: Under normal operating conditions, fluid is stably transported through the breakaway valve pipe. The limiting structure prevents accidental separation of the equipment due to torsional force, and the stabilizing structure ensures that the sponge ring is in close contact with the breakaway valve pipe. When subjected to an axial tensile force exceeding a preset threshold, the breakaway valve pipe separates, and the first telescopic rod and the first spring drive the sealing block and sealing ring to quickly block the main fluid. At the same time, the sponge ring further reduces the outflow of residual liquid, completing the emergency flow interruption protection.

[0006] Preferably, the stabilizing structure includes a connecting block, the outer wall of which is fixedly connected to the outer wall of the second telescopic rod.

[0007] Preferably, a stabilizing rod is slidably connected to the inner wall of the connecting block, a second spring is provided on the outside of the stabilizing rod, a stabilizing block is fixedly connected to the end of the stabilizing rod away from the connecting block, an anti-slip block is fixedly connected to the outer wall of the stabilizing block, and the outer wall of the anti-slip block is slidably connected to the outer wall of the sponge ring.

[0008] Preferably, one end of the second spring is fixedly connected to the outer wall of the connecting block, and the end of the second spring away from the connecting block is fixedly connected to the outer wall of the stabilizing block.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. This utility model, by setting a limiting structure, through the second telescopic rod and the limiting ring in the ring limiting structure, can limit the torsional amplitude of the pull-off valve pipe, enhance the resistance to torsional force, and even if the pipeline is subjected to local torsion or non-axial force, the mechanical limiting can ensure that the separation action is only carried out along the axial direction, avoid accidental separation caused by accidental torsion, reduce safety hazards, and improve the stability of system operation.

[0011] 2. By setting up a sponge ring and a stabilizing structure, when the break-off valve tube separates, the first telescopic rod and the first spring drive the sealing block to move quickly, and the sealing ring fits tightly against the inner wall of the break-off valve tube, instantly blocking the main fluid; at the same time, the stabilizing structure continuously pushes the sponge ring to deform, filling the gap at the separation part, further reducing residual liquid leakage. The dual protection significantly improves the sealing reliability during emergency flow interruption, and reduces material loss and safety risks. Attached Figure Description

[0012] Figure 1 This is the front view of this utility model;

[0013] Figure 2 This is a cross-sectional view of the pull-off valve tube of this utility model;

[0014] Figure 3 This is a schematic diagram of the limiting structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the stable structure of this utility model.

[0016] In the diagram: 1. Pull-off valve pipe; 2. Fixing plate; 3. Limiting structure; 4. Stabilizing structure; 5. Sponge ring; 6. First spring; 7. First telescopic rod; 8. Sealing block; 9. Sealing ring; 10. Second telescopic rod; 11. Limiting ring; 12. Connecting block; 13. Stabilizing rod; 14. Second spring; 15. Stabilizing block; 16. Anti-slip block. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a loose-fitting emergency break-off valve, comprising: a break-off valve pipe 1; a fixing plate 2, the outer wall of the fixing plate 2 being fixedly connected to the outer wall of the break-off valve pipe 1, a limiting structure 3 being fixedly connected to the outer wall of the fixing plate 2, a stabilizing structure 4 being fixedly connected to the outer wall of the limiting structure 3, and a sponge ring 5 being slidably connected to the outer wall of the stabilizing structure 4; the limiting structure 3 includes a second telescopic rod 10, the second telescopic rod 10 being arranged in a ring along the fixing plate 2, the outer wall of the second telescopic rod 10 being fixedly connected to the outer wall of the fixing plate 2, and a limiting ring 11 being fixedly connected to the outer wall of the second telescopic rod 10. In use, it serves as a safety component for pipe connection and is used in conjunction with existing rigid pipe or flexible pipe systems. Through the synergistic effect of the mechanical structure, it achieves normal flow, prevention of accidental separation, and emergency flow interruption sealing functions. Its working process is as follows: Under normal working conditions, the fluid is stably transported through the break-off valve pipe 1. The limiting structure 3 prevents the equipment from being accidentally separated due to torsional force. The stabilizing structure 4 ensures that the sponge ring 5 is in close contact with the break-off valve pipe 1. When subjected to an axial tensile force exceeding the preset threshold, the break-off valve pipe 1 separates. The first telescopic rod 7 and the first spring 6 drive the sealing block 8 and the sealing ring 9 to quickly block the main fluid. At the same time, the sponge ring 5 further reduces the outflow of residual liquid, thus completing the emergency flow interruption protection.

[0020] A first telescopic rod 7 is fixedly connected to the inner wall of the pull-off valve pipe 1, and a first spring 6 is fixedly connected to the outer wall of the first telescopic rod 7.

[0021] A sealing block 8 is fixedly connected to the end of the first spring 6 away from the first telescopic rod 7, and sealing rings 9 are fixedly and symmetrically connected to the outer wall of the sealing block 8.

[0022] The stabilizing structure 4 includes a connecting block 12, the outer wall of which is fixedly connected to the outer wall of the second telescopic rod 10.

[0023] A stabilizing rod 13 is slidably connected to the inner wall of the connecting block 12. A second spring 14 is provided on the outside of the stabilizing rod 13. A stabilizing block 15 is fixedly connected to the end of the stabilizing rod 13 away from the connecting block 12. An anti-slip block 16 is fixedly connected to the outer wall of the stabilizing block 15. The outer wall of the anti-slip block 16 is slidably connected to the outer wall of the sponge ring 5. During normal operation, the pull-off valve pipe 1 remains in a connected state, and the fluid flows along the internal channel of the pull-off valve pipe 1. The first telescopic rod 7 on the inner wall of the pull-off valve pipe 1 is in a contracted state, and the first spring 6 remains in a compressed state, so that the sealing block 8 is in a non-sealed position to avoid obstructing the flow of fluid. The fixing plate 2 is fixed to the pull-off valve pipe 1 through its outer wall. The second telescopic rod 10 in a ring array on its outer wall supports the limiting ring 11 to form a limiting structure 3, which limits the torsional amplitude of the pull-off valve pipe 1 and prevents the pull-off valve pipe 1 from being accidentally separated due to local torsional force. In the stabilizing structure 4, the connecting block 12 is fixed to the second telescopic rod 10, the stabilizing rod 13 slides on the inner wall of the connecting block 12, the second spring 14 is in a compressed state and applies a thrust to the stabilizing block 15, so that the anti-slip block 16 on the outer wall of the stabilizing block 15 is tightly attached to the inner wall of the sponge ring 5, thereby ensuring that the outer wall of the sponge ring 5 is in close contact with the outer wall of the breakaway valve pipe 1, forming a tight fit. When the pipeline is subjected to an unexpected axial tensile force and the tensile force reaches the separation threshold, the breakaway valve pipe 1 separates axially. At this time, the first telescopic rod 7 moves under the elastic force of the first spring 6, driving the sealing block 8 to move towards the center of the channel. The sealing ring 9 on the outer wall of the sealing block 8 is tightly attached to the inner wall of the breakaway valve pipe 1, instantly blocking the flow of the main fluid. At the same time, the gap generated by the separation of the breakaway valve pipe 1 causes the sponge ring 5 to deform under the continuous thrust of the stabilizing structure 4, filling the gap at the separation part, further reducing the leakage of residual liquid from the sealing gap between the sealing block 8 and the breakaway valve pipe 1. During this process, the second telescopic rod 10 of the limiting structure 3 moves as the valve pipe 1 is separated, but always restricts the torsion, ensuring that the separation action is carried out axially and avoiding seal misalignment caused by torsion.

[0024] One end of the second spring 14 is fixedly connected to the outer wall of the connecting block 12, and the end of the second spring 14 away from the connecting block 12 is fixedly connected to the outer wall of the stabilizing block 15.

[0025] Working principle:

[0026] In use, it serves as a safety component for pipeline connections, working in conjunction with existing rigid or flexible pipe systems. Through the synergistic action of its mechanical structure, it achieves normal flow, prevents accidental separation, and provides emergency flow interruption and sealing functions. Its workflow is as follows: Under normal operating conditions, fluid is stably transported through the breakaway valve pipe 1. The limiting structure 3 prevents accidental separation of the equipment due to torsional force, and the stabilizing structure 4 ensures tight contact between the sponge ring 5 and the breakaway valve pipe 1. When subjected to axial tensile force exceeding a preset threshold, the breakaway valve pipe 1 separates. The first telescopic rod 7 and the first spring 6 drive the sealing block 8 and the sealing ring 9 to quickly block the main fluid flow. Simultaneously, the sponge ring 5 further reduces residual liquid outflow, completing the emergency flow interruption protection.

[0027] During normal operation, the breakaway valve tube 1 remains connected, and the fluid flows along the internal channel of the breakaway valve tube 1. The first telescopic rod 7 on the inner wall of the breakaway valve tube 1 is in a contracted state, and the first spring 6 remains in a compressed state, so that the sealing block 8 is in a non-sealed position to avoid obstructing the flow of fluid. The fixing plate 2 is fixed to the breakaway valve tube 1 through the outer wall, and the second telescopic rod 10 in the annular array on its outer wall supports the limiting ring 11 to form a limiting structure 3, which limits the torsional amplitude of the breakaway valve tube 1 and prevents the breakaway valve tube 1 from being accidentally separated due to local torsional force. In the stabilizing structure 4, the connecting block 12 is fixed to the second telescopic rod 10, the stabilizing rod 13 slides on the inner wall of the connecting block 12, the second spring 14 is in a compressed state and applies a thrust to the stabilizing block 15, so that the anti-slip block 16 on the outer wall of the stabilizing block 15 is tightly attached to the inner wall of the sponge ring 5, thereby ensuring that the outer wall of the sponge ring 5 is in close contact with the outer wall of the breakaway valve pipe 1, forming a tight fit. When the pipeline is subjected to an unexpected axial tensile force and the tensile force reaches the separation threshold, the breakaway valve pipe 1 separates axially. At this time, the first telescopic rod 7 moves under the elastic force of the first spring 6, driving the sealing block 8 to move towards the center of the channel. The sealing ring 9 on the outer wall of the sealing block 8 is tightly attached to the inner wall of the breakaway valve pipe 1, instantly blocking the flow of the main fluid. At the same time, the gap generated by the separation of the breakaway valve pipe 1 causes the sponge ring 5 to deform under the continuous thrust of the stabilizing structure 4, filling the gap at the separation part, further reducing the leakage of residual liquid from the sealing gap between the sealing block 8 and the breakaway valve pipe 1. During this process, the second telescopic rod 10 of the limiting structure 3 moves as the valve pipe 1 is separated, but always restricts the torsion, ensuring that the separation action is carried out axially and avoiding seal misalignment caused by torsion.

[0028] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A loop-type emergency disconnect valve, characterized in that, include: Pull-off valve pipe (1); A fixing plate (2) is fixedly connected to the outer wall of the pull-off valve pipe (1). A limiting structure (3) is fixedly connected to the outer wall of the fixing plate (2). A stabilizing structure (4) is fixedly connected to the outer wall of the limiting structure (3). A sponge ring (5) is slidably connected to the outer wall of the stabilizing structure (4). The limiting structure (3) includes a second telescopic rod (10), which is arranged in a ring along the fixed plate (2). The outer wall of the second telescopic rod (10) is fixedly connected to the outer wall of the fixed plate (2), and a limiting ring (11) is fixedly connected to the outer wall of the second telescopic rod (10).

2. The slip-on emergency disconnect valve according to claim 1, characterized in that: The inner wall of the pull-off valve pipe (1) is fixedly connected to a first telescopic rod (7), and the outer wall of the first telescopic rod (7) is fixedly connected to a first spring (6).

3. The slip-on emergency disconnect valve according to claim 2, characterized in that: A sealing block (8) is fixedly connected to the end of the first spring (6) away from the first telescopic rod (7), and a sealing ring (9) is fixedly and symmetrically connected to the outer wall of the sealing block (8).

4. The slip-on emergency disconnect valve according to claim 1, characterized in that: The stabilizing structure (4) includes a connecting block (12), the outer wall of which is fixedly connected to the outer wall of the second telescopic rod (10).

5. A loop-type emergency disconnect valve according to claim 4, characterized in that: A stabilizing rod (13) is slidably connected to the inner wall of the connecting block (12). A second spring (14) is provided on the outside of the stabilizing rod (13). A stabilizing block (15) is fixedly connected to the end of the stabilizing rod (13) away from the connecting block (12). An anti-slip block (16) is fixedly connected to the outer wall of the stabilizing block (15). The outer wall of the anti-slip block (16) is slidably connected to the outer wall of the sponge ring (5).

6. A loop-type emergency disconnect valve according to claim 5, characterized in that: One end of the second spring (14) is fixedly connected to the outer wall of the connecting block (12), and the end of the second spring (14) away from the connecting block (12) is fixedly connected to the outer wall of the stabilizing block (15).

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