Explosion venting device and reset type explosion venting device system

Abstract

The invention relates to an explosion venting device and a reset type explosion venting device system in the technical field of explosion venting devices. The explosion venting device comprises a rack, a silicon rubber sealing layer, a guide sleeve, an elastic unit, at least three switch type magnetic bases and at least three switch mechanisms. By arranging the guide sleeve and the switch mechanism, impact on the explosion venting device is ingeniously converted into power for controlling rotation of the permanent magnet of the switch type magnetic base, and the magnetic base is automatically magnetized and demagnetized at a proper time through the elastic unit. Compared with traditional electrical control, the device is more stable in control and more convenient to repair and maintain, and the cost for purchasing parts is lower. Through cooperation between the switch type magnetic base and the upper edge sealing base, the explosion venting device and the explosion venting opening are in a flexible contact state, and therefore the technical problem that due to the fact that an existing explosion venting device is pressed downwards through a mechanical structure for sealing, the explosion venting opening is prone to being damaged during resetting, and sealing fails is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion vents, and in particular to an explosion vent and a resettable explosion vent system. Background Art

[0002] An explosion vent is a device used to reduce pipeline pressure. In the coking industry, the coal loading and dust removal pipeline system is a core facility for controlling smoke and dust emissions and ensuring a safe production environment. As a key safety component of this system, the resettable explosion vent quickly releases pressure in the event of a deflagration in the pipeline, preventing equipment damage and safety accidents. It also needs to reset after pressure release to maintain normal system operation.

[0003] However, practical problems exist: 1. Traditional resettable vents rely on the vent's own gravity or a weight to press down on the sealing layer to achieve a seal. Over long-term operation, this can lead to wear on the sealing surface and increased gaps due to vibration, corrosion, or pressure fluctuations. Furthermore, outside air can infiltrate the pipe through these gaps, reducing dust removal efficiency, exacerbating pipe corrosion, degrading system stability, and even causing secondary explosions. 2. After the flash explosion pressure is released, the vent is prone to rapid upward movement due to the impact force, crashing into the baffle. During the return stroke, inertia forces impact the vent opening, causing damage and deformation to components at both the vent opening and the vent connection. This can even cause partial inelastic collisions, preventing timely and accurate reset and impacting system operation. 3. The coking industry's complex and variable operating conditions, such as varying coal loading processes, fluctuating smoke composition and concentration, and large temperature and pressure fluctuations, can lead to gaps at the vent connection due to temperature fluctuations. This makes traditional resettable vents unsuitable for these conditions, impacting their performance. 4. Traditional explosion vents take a long time to open the explosion vent to release pressure after the pipeline flashes, which makes the pipeline and the explosion vent easily damaged.

[0004] In summary, the existing explosion vent uses a mechanical structure to press down the seal, which makes the explosion vent easily damaged during resetting, resulting in seal failure and affecting the normal explosion venting function. In addition, the explosion vent system has poor stability and a short service life, and is not suitable for production conditions such as coal loading processes. Summary of the Invention

[0005] In order to solve the technical problems that the existing explosion vent uses a mechanical structure to press down the seal, which makes the explosion vent easily damaged during resetting, resulting in sealing failure, and a long pressure relief delay during pipeline flashover, the present invention provides an explosion vent and a resettable explosion vent system.

[0006] The present invention provides an explosion vent, comprising a frame, a silicone rubber sealing layer, a guide sleeve, at least three switch-type magnetic seats, at least three switch mechanisms, and an elastic unit. The frame is provided with a receiving chamber, and one end is provided with an opening communicating with the receiving chamber; the silicone rubber sealing layer is fixed to the frame and seals the opening; the guide sleeve is located in the receiving chamber and fixed to the silicone rubber sealing layer, and has at least three L-shaped grooves evenly distributed along the axis of the guide sleeve on its outer wall; the at least three switch-type magnetic seats are fixed in the receiving chamber and correspond to the at least three L-shaped grooves, respectively, for driving the silicone rubber sealing layer to seal or open the explosion vent of the pipeline; the at least three switch mechanisms are used to respectively drive the at least three switch-type magnetic seats to open or close, each switch mechanism comprising a turntable and a bearing movably mounted in the vertical and horizontal grooves of the L-shaped grooves, a connector at each end connected to the center of the turntable and the bearing, and a main shaft coaxially connected to the turntable; the main shaft drives the switch-type magnetic seat to open and close accordingly by rotating and resetting; one end of the elastic unit is fixed to the top of the frame, and the other end is fixed to the guide sleeve.

[0007] Furthermore, the connecting member includes two linear rods, two ends of which are fixed and the other ends of which are rotatably connected to the center of the turntable and the bearing, and the angle between the two linear rods is an obtuse angle.

[0008] Furthermore, the connecting member is a linear rod, both ends of which are rotatably mounted at the center of the turntable and the bearing respectively, and the vertical distance between the linear rod and the L-shaped groove is greater than the vertical distance between the busbar of the outer edge of the guide sleeve and the L-shaped groove.

[0009] Furthermore, the elastic unit includes a symmetrically arranged top plate and bottom plate, and a spring; both ends of the spring are respectively connected to the top plate and the bottom plate, the top plate is fixedly installed to the other end of the guide sleeve, and the bottom plate is fixedly installed to the center of the frame.

[0010] Furthermore, the explosion venter also includes a limit assembly, which includes a limit sleeve and a straight rod; the limit sleeve is cylindrical, one end of the limit sleeve is fixed at the center of the frame and the axes of the two coincide; the elastic unit includes a spring, a top plate and a bottom plate; the guide sleeve is close to the top plate of the elastic unit on one side thereof. A linear groove is provided along the direction of its own axis, and the top plate and the bottom plate are respectively provided with a limit hole along the direction of the axis of the guide sleeve; one end of the straight rod is fixed at the center of the frame, and the other end passes through the two limit holes of the top plate and the bottom plate and is inserted into the linear groove; a through hole is provided at the end of the limit sleeve away from the frame, and the guide sleeve cooperates with the through hole and slides in the through hole for a limited position; the top plate fits in with the inner top of the limit sleeve, and the diameter of the top plate is larger than the through hole, and the bottom plate fits in with the center of the frame under the thrust of the spring.

[0011] Furthermore, a guide sleeve base is provided at the center of the silicone rubber sealing layer close to one side of the frame, and one end of the guide sleeve is fixed on the guide sleeve base along the axis direction of the circular frame.

[0012] Furthermore, the silicone rubber sealing layer protrudes in a direction away from the frame.

[0013] The present invention also provides a resettable explosion vent system, comprising an explosion vent and a mounting mechanism. The explosion vent is the aforementioned explosion vent; the mounting mechanism includes a baffle support base, a hydraulic buffer hinge mounted on one side of the baffle support base, and the hydraulic buffer hinge is connected to the explosion vent via a transmission rod, allowing the explosion vent to move about the rotation axis of the hydraulic buffer hinge.

[0014] Furthermore, the installation mechanism also includes a baffle and at least one shock-absorbing spring bracket, the shock-absorbing spring bracket is installed on the upper part of the baffle support base, the baffle is installed at the end of the shock-absorbing spring bracket, and the baffle is used to contact the explosion vent and share the impact force of the explosion vent.

[0015] Furthermore, the installation mechanism also includes a branch pipe, one end of which is fixed on the pipeline and communicates with the explosion vent, and the pipe opening at the other end of the branch pipe is used to replace the explosion vent.

[0016] The present invention has the following beneficial effects compared to the prior art:

[0017] 1. By incorporating a linkage mechanism (guide sleeve, switch mechanism), the device cleverly converts the impact of the explosion vent into a force that controls the rotation of the permanent magnets in the switch-type magnetic base. The elastic unit allows the guide sleeve to reciprocate, driving the switch-type magnetic base to automatically magnetize and demagnetize at the appropriate time, achieving simultaneous pressure relief in a very short time. This achieves automatic control at the mechanical level. Compared with traditional electrical control, this device offers more stable control, shortened explosion relief delay, faster explosion relief, easier maintenance, and lower parts procurement costs, making it ideal for explosion venting applications and highly targeted. Furthermore, by leveraging the coordination between the switch-type magnetic base and the upper sealing seat, the hydraulic buffer hinge generates resistance when the explosion vent descends. This resistance, combined with the explosion vent's own weight, allows the explosion vent to descend at a uniform speed and reset. Ultimately, the explosion vent and the upper sealing seat reattach tightly, placing the explosion vent in flexible contact with the pipeline's explosion vent. This addresses the technical issue of existing explosion vents, which rely on mechanical downward pressure to seal, resulting in damage to the explosion vent during reset, leading to seal failure.

[0018] 2. Improved sealing reliability of the explosion vent device. Traditional explosion vents mostly use mechanical rigid seals, which are prone to failure due to factors such as vibration and corrosion. This invention uses a switchable magnetic seat as the core, precisely controlling the sealing state through magnetization and demagnetization of permanent magnets. Combined with three switchable magnetic seats distributed in a circumferential array, this ensures uniform pressure on the explosion vent seal seat, improving sealing stability and reliability.

[0019] 3. Significantly reduces impact damage. Traditional explosion vents, when opened and dropped, have no buffering device and are prone to hard impact with the base, damaging the sealing surface. This invention uses a hydraulic buffer hinge to connect the explosion vent to the baffle support base, which can effectively buffer gravity impact, prevent wear on the sealing surface, and extend the service life of the equipment.

[0020] 4. Enhanced anti-interference capability: The present invention realizes the automatic uniform falling and resetting of the explosion relief device after explosion relief through the coordinated action of the linkage mechanism and the hydraulic buffer hinge; at the same time, the magnetic control avoids the jamming problem of the traditional mechanical structure caused by environmental factors such as dust and oil, thereby improving the anti-interference capability.

[0021] 5. Optimized response speed and safety. The present invention can quickly respond to instantaneous pressure surges in the pipeline through the linkage design of the silicone rubber sealing layer and the guide sleeve. The switch mechanism rotates the switch-type magnetic base 90 degrees to synchronously complete demagnetization and pressure relief, shortening the explosion relief delay and reducing the risk of damage to the pipeline caused by the explosion impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the operating status of the resettable explosion venting device system according to an embodiment of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the explosion vent of the resettable explosion vent system.

[0024] Figure 3 for Figure 2 Cross-sectional view in the AA direction.

[0025] Figure 4 This is a schematic diagram of the external structure of the resettable explosion vent system after the explosion vent is docked with the upper edge sealing seat.

[0026] Figure 5 for Figure 4 Schematic diagram of the internal structure.

[0027] Figure 6 for Figure 5 Schematic diagram of the local structure.

[0028] Figure 7 for Figure 3 Cross-section of the magnetic base in the center BB direction.

[0029] Figure 8 Schematic diagram of the local structure of the switch mechanism.

[0030] Figure 9 Schematic diagram of the operating status of the switch mechanism.

[0031] Description of main components: 1. Frame; 2. Limit assembly; 21. Limit sleeve; 22. Linear slot; 23. Straight rod; 24. Through hole; 25. Limit hole; 3. Elastic unit; 4. Guide sleeve; 5. Magnetic base; 6. Switch mechanism; 61. Spindle; 62. Connector; 63. Slider; 64. Bearing; 65. L-shaped slot; 7. Silicone rubber sealing layer; 8. Guide sleeve base; 9. Upper edge sealing seat; 10. Hydraulic buffer hinge; 11. Baffle support base; 12. Shock-absorbing spring bracket; 13. Baffle; 14. Pipeline; 141. Explosion vent; 142. Branch pipe; 143. Transmission rod; 144. Connecting rod; 16. Brass; 17. Cast iron; 18. Magnetic material; 19. Permanent magnet. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Embodiments of the present invention disclose a pipeline system, such as a coal loading and dust removal pipeline system. The pipeline system includes a plurality of pipelines 14 and at least one resettable explosion relief device system. At least one explosion relief vent 141 corresponding to the at least one explosion relief device system is defined on at least one pipeline 14. The explosion relief device system is configured to open the corresponding explosion relief vent 141 when the air pressure within the pipeline 14 is excessively high, thereby relieving the air pressure within the pipeline 14. The explosion relief device system then automatically resets and seals the corresponding explosion relief vent 141 after the pressure is relieved.

[0034] like Figure 1 As shown, the resettable explosion vent system includes an explosion vent and a mounting mechanism for mounting the explosion vent on a corresponding explosion vent 141. The mounting mechanism includes a baffle support base 11, a hydraulic buffer hinge 10, a transmission rod 143, and may also include a receiving assembly, a branch pipe 142, a connecting rod 144, and an upper edge sealing seat 9.

[0035] The explosion vent is used to seal the corresponding explosion vent 141, thereby reducing the air pressure in the pressure relief pipe 14, and automatically resets and seals the corresponding explosion vent 141 after the pressure relief. The explosion vent can be directly installed at the explosion vent 141. In order to reduce the contact force between the explosion vent 141 and the explosion vent, and to protect the explosion vent 141 and the explosion vent, an upper edge sealing seat 9 can be installed between the explosion vent 141 and the explosion vent. The upper edge sealing seat 9 can be installed on the pipe 14 at the explosion vent 141, or it can be installed on the explosion vent, as long as it can reduce the contact force between the explosion vent 141 and the explosion vent, and to protect the explosion vent 141 and the explosion vent. The explosion vent can also be indirectly installed at the explosion vent 141, such as by first fixing it to the pipe 14 through one end of the branch pipe 142 and communicating with the explosion vent 141, and then installing the explosion vent at the other end of the branch pipe 142 (the outlet of the equivalent explosion relief). The advantage of indirectly installing the explosion relief device on the pipeline 14 through the branch pipe 142 is that it provides a sufficiently large installation space for the explosion relief system and can also provide a sufficiently large space margin to prevent the explosion relief device from colliding with the pipeline 14 during the explosion relief process.

[0036] The pipe 14 and / or the upper edge sealing seat 9 are made of metal. That is, when the pipe is made of metal, the upper edge sealing seat 9 can be made of a flexible material or a metal material. When the pipe is made of a non-metallic material, the upper edge sealing seat 9 needs to be made of a metal material or a built-in metal material to achieve adsorption between the explosion vent of the present invention.

[0037] The vent is rotatably connected to the baffle support base 11 via a transmission rod 143. The baffle support base 11 is used to limit the vent when it opens due to excessive air pressure in the pipe 14, preventing the vent from completely disengaging from the vent 141 and preventing the vent from being reset by its own gravity. The baffle support base 11 can be fixed to one side of the vent 141. It is recommended that the angle of fixation be tilted toward the vent 141. The angle between the baffle support base 11 and the vent 141 is not recommended to exceed 90 degrees. In this embodiment, the baffle support base 11 is parallel to the branch pipe 142. The baffle support base 11 can be directly fixed on the pipe 14, or it can be fixed on the outside such as the ground. It can also be fixed to the branch pipe 142 using a connecting rod 144 as in the present embodiment. As long as the baffle support base 11 can be fixed and the angle between the baffle support base 11 and the explosion vent 141 does not exceed 90 degrees, it can prevent the explosion vent from being unable to return to the explosion vent 141 by its own gravity due to the angle relative to the explosion vent 141 being too large when the explosion vent is vented.

[0038] The rotational connection between the transmission rod 143 and the baffle support base 11 utilizes a hydraulic buffer hinge 10. This hydraulic buffer hinge 10 is connected to the explosion relief device via the transmission rod 143, allowing the explosion relief device to rotate along with the hydraulic buffer hinge 10 around its rotation axis. The hydraulic buffer hinge 10 can be an industrial-grade hydraulic hinge with a load capacity of up to 420 kg. When the explosion relief device is in standby mode, the contact surface between the explosion relief device and the upper edge sealing seat 9 is sealed, and the explosion relief device and the upper edge sealing seat 9 are adsorbed together.

[0039] Undertake components such as Figure 1 As shown in the yellow portion, the receiving assembly may include a baffle 13 and at least one shock-absorbing spring bracket 12. One end of the shock-absorbing spring bracket 12 is fixedly mounted on the baffle support base 11, and the baffle 13 is mounted on the other end of the shock-absorbing spring bracket 12. The shock-absorbing spring bracket 12 can also be tilted relative to the baffle support base 11 to adjust the distance between the baffle 13 and the pipe 14, thereby adjusting the travel between the baffle 13 and the explosion vent.

[0040] When a flash explosion occurs in the pipe 14 (the pressure reaches 0.1MPa positive pressure), the explosion vent is impacted and as the hydraulic buffer hinge 10 rotates and rises, it separates from the upper edge sealing seat 9. At the set position of the baffle 13 (the set position is freely set according to the actual situation), the explosion vent will contact the baffle 13 and be blocked by the baffle 13. The baffle 13 absorbs the impact force of the explosion vent and converts it into the impact force of the baffle 13. The impact force of the baffle 13 will be absorbed by the shock-absorbing spring bracket 12, thereby reducing the instantaneous impact force between the explosion vent and the baffle 13, thereby protecting the explosion vent. At the same time, when the explosion vent falls, the hydraulic buffer hinge 10 will generate resistance. Under the action of this resistance and the explosion vent's own gravity, the explosion vent will fall and reset at a uniform speed. Finally, the explosion vent and the upper edge sealing seat 9 will be tightly adsorbed together again, eliminating the inhalation of external air caused by the negative pressure in the pipe. This avoids the problem that the explosion vent 141 of the explosion vent is easily damaged when the explosion vent is reset. It solves the problem of traditional explosion vents hitting the sealing surface under the action of gravity, resulting in loose sealing and negative pressure air intake. It is suitable for pipeline systems with frequent explosion venting such as chemical and dust treatment, improving safety and reliability.

[0041] When a coal-loading and dust-removal piping system in a production environment requires an explosion vent, and the user does not have any explosion vent-related devices, the user can directly purchase the resettable explosion vent system from the manufacturer and directly install the explosion vent system on the pipeline. Conventional coal-loading and dust-removal piping systems are equipped with explosion vent systems, but the explosion vent of the present invention can shorten the explosion venting delay, making the explosion venting force of the pipeline 14 faster and easier to repair and maintain, and the cost of purchasing parts is lower, making it very suitable for explosion venting use scenarios and highly targeted.

[0042] Therefore, when the explosion vent needs to be updated in the production environment, and the user has the installation mechanism of the explosion vent (such as the baffle support base 11, etc.), the user can directly purchase the explosion vent from the manufacturer and build a new explosion vent system by replacing the old explosion vent with the explosion vent. Figure 2 、 Figure 3 As shown, Figure 2 Schematic diagram of the structure of the explosion vent of this embodiment, Figure 3 for Figure 2 Cross-section view in the AA direction, Figure 2 Shown is a bottom-to-top view of the explosion vent. The explosion vent comprises a frame 1, an elastic unit 3, a guide sleeve 4, at least three switch-type magnetic bases 5, at least three switch mechanisms 6, a silicone rubber sealing layer 7, and may also include a limit assembly 2 and a guide sleeve base 8. A receiving chamber is provided within the frame 1, with an opening at one end communicating with the receiving chamber. At least three switch-type magnetic bases 5 are evenly distributed along the circumference of the frame 1 and positioned within the receiving chamber. The at least three switch-type magnetic bases 5 have a relatively stable center of gravity, ensuring uniform force distribution at the sealing seat 9 along the upper edge. One end of the guide sleeve 4 is mounted to the frame 1 via the elastic unit 3. A silicone rubber sealing layer 7 is sealed against the opening of the frame 1. The other end of the guide sleeve 4 is mounted on the silicone rubber sealing layer 7 and positioned within the receiving chamber, with the silicone rubber sealing layer 7 protruding away from the frame 1. The limit assembly 2 limits the movement of the guide sleeve 4, limiting its movement to the axis of the frame 1. Each switch type magnetic seat 5 is connected to the guide sleeve 4 via a switch mechanism 6. Figure 1 、 Figure 4 、 Figure 5As shown, when a flash explosion occurs in pipeline 14, pressure is transferred to the silicone rubber sealing layer 7, which deforms and pushes the guide sleeve 4 along the axis of the frame 1. During this movement, the guide sleeve 4 rotates the switch mechanism 6, which in turn magnetizes and demagnetizes the switch-type magnetic base 5. Subsequently, the switch-type magnetic base 5 loses its attraction to the upper edge sealing base 9. Under the impact of the flash explosion, the entire explosion relief device moves along the trajectory of the hydraulic buffer hinge 10. Once pressure relief is complete, the entire explosion relief device falls at a constant speed due to gravity and the hydraulic buffer hinge 10. At this time, since the silicone rubber sealing layer 7 is no longer under pressure, the guide sleeve 4 will be reset under the action of the elastic unit 3. During the reset process, the guide sleeve 4 will drive the switch mechanism 6 to reset, so that the switch-type magnetic seat 5 is re-magnetized. After the explosion vent falls back to the upper edge sealing seat 9 as a whole, it will be tightly adsorbed together through the switch-type magnetic seat 5, thereby realizing the entire process of automatic separation-pressure relief-automatic reset-automatic adsorption-automatic locking. In addition, this process does not involve electronic control, has high durability, and is easy to repair and maintain, making the explosion vent highly stable and low-cost. In addition, the explosion vent can be kept in a flexible contact state with the explosion vent 141 of the pipeline throughout the entire process, solving the technical problem that the explosion vent 141 of the existing explosion vent is easily damaged during reset due to the mechanical structure pressing down the seal.

[0043] The frame 1 includes a receiving cavity, the opening of which is covered by a silicone rubber sealing layer 7. A guide sleeve base 8 is fixedly mounted to the inner center of the silicone rubber sealing layer 7. The silicone rubber sealing layer 7 can withstand the pressure generated by the instantaneous flash explosion and deform without rupturing. A guide sleeve 4 is fixed to the guide sleeve base 8 along the axial direction of the frame 1, with the axis of the guide sleeve 4 coinciding with the axis of the frame 1. At least three switch-type magnetic bases 5 are evenly distributed along the circumference of the frame 1 and located within the receiving cavity. The frame 1 can be cylindrical in shape. An elastic unit 3 is disposed between the guide sleeve 4 and the center of the frame 1, along the axis of the frame 1, connecting the guide sleeve 4 to the frame via the elastic unit 3. The elastic unit 3 comprises a top plate, a bottom plate, and a spring. The top and bottom plates are symmetrically arranged, with the ends of the spring connected to the top and bottom plates, respectively. The end of the guide sleeve 4 away from the guide sleeve base 8 is fixedly connected to the top plate of the elastic unit 3. The bottom plate can be directly fixed to the center of the frame 1. In addition, the explosion vent can also utilize a limit assembly 2, with the elastic unit 3 indirectly secured to the frame 1 via the limit assembly 2. Specifically, the two ends of the spring can be connected to the top plate and bottom plate, respectively. The top plate is fixedly mounted to the other end of the guide sleeve 4, and the bottom plate is aligned with the center of the frame 1 under the thrust of the spring. When pressure is applied to either the top plate or the bottom plate, the spring is compressed, causing the guide sleeve 4 to reciprocate between the frame 1 and the guide sleeve base 8, thereby driving the switch mechanism 6 to reset and magnetize and demagnetize the switch-type magnetic base 5.

[0044] like Figure 6 As shown, the limiting assembly 2 includes a limiting sleeve 21 and a straight rod 23. The limiting sleeve 21 is cylindrical in shape, with one end fixed to the center of the frame 1 and the axes of the two coinciding. A linear groove 22 is formed on the side of the guide sleeve 4 near the top plate of the elastic unit 3 along its own axis. The top plate and bottom plate of the elastic unit 3 are each provided with a limiting hole 25 along the axis of the guide sleeve 4. One end of the straight rod 23 is fixed to the center of the frame 1, and the other end of the straight rod 23 passes through the two limiting holes 25 of the top plate and bottom plate and is inserted into the linear groove 22. A through hole 24 is formed on the end of the limiting sleeve 21 away from the frame 1. The guide sleeve 4 cooperates with the through hole 24 and slides within the through hole 24 for limiting movement. Under the action of the spring support, the bottom plate of the elastic unit 3 is in contact with the center of the frame 1. The top plate of the elastic unit 3 is fixed to the inner top of the limiting sleeve 21, and the diameter of the top plate is larger than the through hole 24. The limiting assembly 2 constrains the movement direction of the guide sleeve 4, which is constrained to be along the axis of the frame 1. The cooperation between the straight rod 23 and the linear slot 22 constrains the movement depth of the guide sleeve 4, thereby improving the accuracy of the guide sleeve 4 during movement and enhancing the stability of the explosion venting device.

[0045] like Figure 7 As shown, at least three switch-type magnetic seats 5 are evenly distributed and fixed along the circumferential direction on the outer edge of the inner side wall of the frame 1. The switch-type magnetic seat 5 can adopt an existing magnetic seat (such as model: V-type seat KVA-2A triangle table). Each switch-type magnetic seat 5 is connected to the guide sleeve 4 through a switch mechanism 6. The switch-type magnetic seat 5 includes cast iron 17, brass 16, a permanent magnet 19 and a magnetic material 18. The cast iron 17 serves as the outer shell layer, a cylindrical groove is opened inside the cast iron 17, and the magnetic material 18 serves as the inner ring layer of the cylindrical groove. A permanent magnet 19 is rotatably set in the magnetic material 18, and brass 16 is set on the top and bottom of the magnetic material 18. When the permanent magnet 19 is rotated to the position as shown in FIG. Figure 7 When the permanent magnet 19 is in the horizontal state (N and S poles are horizontal), demagnetization is performed. When the permanent magnet 19 is rotated to the vertical state (N and S poles are vertical), magnetization occurs. The rotation of the permanent magnet 19 can be achieved by the switch mechanism 6, thereby realizing automated magnetization and demagnetization operations.

[0046] like Figure 8As shown, each switch mechanism 6 includes a main shaft 61, a connector 62, a turntable 63, and a bearing 64. A turntable 63 is coaxially mounted on one end of the main shaft 61. The turntable 63 is coaxial with the main shaft 61. A connector 62 is fixed to the end of the main shaft 61 near the turntable 63, and a bearing 64 is rotatably mounted on the other end of the connector 62. The bearing 64 can be coaxially mounted on the shaft, which is then fixed to the other end of the connector 62. Alternatively, a rotating seat can be provided at the other end of the connector 62, and the bearing 64 can be directly rotatably mounted on the rotating seat at the other end of the connector 62. The end faces of the turntable 63 and the bearing 64 are located in the same plane. Three L-shaped slots 65 are evenly distributed along the circumference of the guide sleeve 4, each L-shaped slot 65 corresponding to a switch-type magnetic base 5. The turntable 63 and the bearing 64 are movably mounted in the vertical and horizontal slots of the L-shaped slot 65, respectively. The connecting member 62 can be a zigzag rod composed of two straight rods spliced ​​end to end, with the angle between the straight rods being an obtuse angle, preferably 120°. The connecting member 62 can also be a straight rod. When the connecting member 62 is a straight rod, the connecting member 62 is greater than the vertical distance between the busbar of the outer edge of the guide sleeve 4 and the L-shaped groove 65 in the vertical projection direction of the guide sleeve 4. The main function of the turntable 63 is to smoothly slide relative to the L-shaped groove. The turntable 63 and the bearing 64 are respectively connected to the corners of the L-shaped groove in a limited sliding manner. A keyway is provided at the axis of the permanent magnet 19. The switch shaft of the switch-type magnetic seat 5 can be directly connected to the keyway, or the end of the main shaft 61 can be directly connected to the keyway, or the end of the main shaft 61 can be directly connected to the rotating shaft of the switch of the switch-type magnetic seat 5 (i.e., the switch shaft). The other end of the main shaft 61 is fixedly connected to the center of the permanent magnet 19 of the switch-type magnetic seat 5, so that when the main shaft 61 rotates, it can drive the permanent magnet 19 to rotate 90°. The other end of the main shaft 61 can also be connected to the rotating shaft of the switch of the switch-type magnetic base 5, and the rotating shaft of the switch is fixedly connected to the center of the permanent magnet 19, so that the switch mechanism 6 can control the rotation of the permanent magnet 19 through the guide sleeve 4 and the main shaft 61, thereby realizing automatic control of the magnetization and demagnetization operations of the switch-type magnetic base 5.

[0047] like Figure 9 As shown, Figure 9This is a schematic diagram of the operating state of the switch mechanism 6. The red line in the figure indicates the same horizontal position. The left figure shows the initial state of the guide sleeve 4, and the right figure shows the state after the guide sleeve 4 rises due to the flash explosion. As can be seen from the figure, in the initial state, the turntable 63 is located at the top of the L-shaped groove. After the impact, the guide sleeve 4 rises, while the turntable 63 remains in place. The bottom of the L-shaped groove supports the bearing 64 to move upward. During the upward movement of the bearing 64, the bearing 64 slides to the right at the bottom of the L-shaped groove and drives the connecting member 62 to rotate. The bearing 64 will exhibit an arc-shaped motion trajectory, thereby converting the vertical motion of the guide sleeve 4 into the rotational motion of the turntable 63. The turntable 63 drives the main shaft 61 to rotate 90°. The main shaft 61 drives the switch shaft of the switch-type magnetic base 5 to rotate 90°, thereby rotating the permanent magnet 19 90°. The switch type magnetic seat 5 is magnetized and demagnetized. Similarly, when the explosion relief device falls, the guide sleeve 4 moves in the opposite direction to drive the main shaft 61 to rotate in the opposite direction, and the switch type magnetic seat 5 is magnetized, thereby realizing the operation of automatically controlling the magnetization and demagnetization of the switch type magnetic seat 5.

[0048] The explosion vent has a novel concept. By setting up a linkage mechanism (guide sleeve 4, switch mechanism 6), the impact on the explosion vent is cleverly converted into the power to control the rotation of the permanent magnet 19 of the switch-type magnetic seat 5. The elastic unit 3 allows the guide sleeve 4 to reciprocate and drive the switch-type magnetic seat 5 to automatically magnetize and demagnetize at the appropriate time, thereby realizing automatic control at the mechanical structure level. Compared with traditional electrical control, the control of this device is more stable and the control delay is low, which makes the pressure relief faster, easier to repair and maintain, and the cost of purchasing parts is lower. It is very suitable for the use scenario of the explosion vent and has strong pertinence. And by utilizing the cooperation between the switch-type magnetic seat 5 and the upper edge sealing seat 9, the explosion vent and the explosion vent 141 are in a flexible contact state, thereby solving the technical problem that the existing explosion vent uses a mechanical structure to press down the seal, which makes the explosion vent 141 easily damaged during reset, resulting in sealing failure, and a high pressure relief delay.

[0049] In summary, the present invention: 1. Improves the sealing reliability of the explosion relief device. Traditional explosion relief devices mostly use mechanical hard seals, which are prone to sealing failure due to factors such as vibration and corrosion. The present invention takes the switch-type magnetic seat 5 as the core, and accurately controls the sealing state through the magnetization / demagnetization of the permanent magnet 19. Combined with at least three switch-type magnetic seats 5 evenly distributed in a circular array, it ensures that the pressure of the explosion relief port sealing seat is uniform, thereby improving the sealing stability and reliability. 2. Significantly reduces impact damage. When a traditional explosion relief device falls after being opened, it is easy to hard hit the base and damage the sealing surface because it has no buffer device. The present invention uses a hydraulic buffer hinge 10 to connect the explosion relief device and the baffle support base 11, which can effectively buffer the impact of gravity, avoid wear on the sealing surface, and extend the service life of the equipment. 3. Enhances anti-interference ability. The present invention uses a linkage mechanism and a hydraulic buffer hinge 10 to cooperate to achieve the automatic uniform speed falling and resetting of the explosion relief device after explosion relief. At the same time, the magnetic control avoids the jamming problem of traditional mechanical structures caused by environmental factors such as dust and oil, thereby improving anti-interference ability. 4. Optimized response speed and safety. Through the linkage design of the silicone rubber sealing layer 7 and the guide sleeve 4, the present invention can quickly respond to instantaneous pressure surges within the pipeline. The switch mechanism 6 rotates the permanent magnet 19 of the switch-type magnetic base 5 90 degrees to synchronously demagnetize and relieve pressure, shortening the explosion venting delay and reducing the risk of damage to the pipeline caused by the explosion shock. Therefore, the present invention systematically addresses the shortcomings of traditional explosion vents in terms of sealing reliability, impact protection, and reset, significantly improving the safety and operation and maintenance efficiency of industrial pipeline systems.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An explosion vent, characterized in that: include: A frame (1) is provided with a receiving cavity and one end of the frame is provided with an opening communicating with the receiving cavity; a silicone rubber sealing layer (7) fixed to the frame (1) and sealing the opening; A guide sleeve (4) is located in the receiving cavity and fixed on the silicone rubber sealing layer (7), and has at least three L-shaped grooves (65) evenly distributed along the axis of the guide sleeve (4) on its outer wall; At least three switch-type magnetic seats (5), which are fixed in the receiving cavity and correspond to the at least three L-shaped grooves (65) respectively, and are used to drive the silicone rubber sealing layer (7) to seal or open the explosion vent (141) of the pipeline (14); At least three switch mechanisms (6) are used to respectively drive the at least three switch-type magnetic seats (5) to open or close. Each switch mechanism (6) comprises a turntable (63) and a bearing (64) movably mounted in a vertical slot and a horizontal slot of an L-shaped slot (65), a connecting member (62) at both ends of which is respectively connected to the center of the turntable (63) and the bearing (64), and a main shaft (61) coaxially connected to the turntable (63). The main shaft (61) drives the switch-type magnetic seat (5) to open and close accordingly by rotating and resetting. The elastic unit (3) has one end fixed on the top of the frame (1) and the other end fixed on the guide sleeve (4).

2. The explosion vent according to claim 1, characterized in that: The connecting member (62) comprises two linear rods, two ends of which are fixed and the other two ends of which are rotatably connected to the center of the turntable (63) and the bearing (64), and the angle between the two linear rods is an obtuse angle.

3. The explosion vent according to claim 1, characterized in that: The connecting member (62) is a linear rod, and both ends of the linear rod are rotatably mounted on the center of the turntable (63) and the bearing (64), respectively. The vertical distance between the linear rod and the L-shaped groove (65) is greater than the vertical distance between the busbar on the outer edge of the guide sleeve (4) and the L-shaped groove (65).

4. The explosion vent according to claim 1, characterized in that: The elastic unit (3) includes a symmetrically arranged top plate and bottom plate, and a spring; the two ends of the spring are respectively connected to the top plate and the bottom plate, the top plate is fixedly mounted to the other end of the guide sleeve (4), and the bottom plate is fixedly mounted to the center of the frame (1).

5. The explosion vent according to claim 1, characterized in that: The explosion relief device further comprises a limiting assembly (2), the limiting assembly (2) comprising a limiting sleeve (21) and a straight rod (23); the limiting sleeve (21) is cylindrical in shape, one end of the limiting sleeve (21) is fixed at the center of the frame (1) and the axes of the two coincide with each other; the elastic unit (3) comprises a spring, a top plate and a bottom plate; a linear groove (22) is provided on one side of the guide sleeve (4) close to the top plate of the elastic unit (3) along its own axis direction, and a limiting hole (25) is provided on the top plate and the bottom plate along the axis direction of the guide sleeve (4) respectively. ); one end of the straight rod (23) is fixed at the center of the frame (1), and the other end passes through the two limiting holes (25) of the top plate and the bottom plate and is inserted into the linear groove (22); a through hole (24) is opened at the end of the limiting sleeve (21) away from the frame (1), and the guide sleeve (4) cooperates with the through hole (24) and performs limiting sliding in the through hole (24); the top plate is fitted with the inner top of the limiting sleeve (21), and the diameter of the top plate is larger than the through hole (24), and the bottom plate is fitted with the center of the frame (1) under the thrust of the spring.

6. The explosion vent according to claim 1, characterized in that: A guide sleeve base (8) is provided at the center of the silicone rubber sealing layer (7) close to one side of the frame (1), and one end of the guide sleeve (4) is fixed on the guide sleeve base (8) along the axis direction of the frame (1).

7. The explosion vent according to claim 1, characterized in that: The silicone rubber sealing layer (7) protrudes in a direction away from the frame (1).

8. A resettable explosion vent system, characterized in that: include: An explosion vent, which is the explosion vent according to any one of claims 1 to 7; The mounting mechanism comprises a baffle support base (11), a hydraulic buffer hinge (10) is mounted on one side of the baffle support base (11), and the hydraulic buffer hinge (10) is connected to the explosion relief device via a transmission rod (143) so as to allow the explosion relief device to move around the rotation axis of the hydraulic buffer hinge (10).

9. The resettable explosion vent system according to claim 8, characterized in that: The mounting mechanism further comprises a baffle (13) and at least one shock-absorbing spring bracket (12). The shock-absorbing spring bracket (12) is mounted on the upper portion of the baffle support base (11). The baffle (13) is mounted on the end of the shock-absorbing spring bracket (12). The baffle (13) is used to contact the explosion vent and share the impact force of the explosion vent.

10. The resettable explosion vent system according to claim 8, characterized in that: The installation mechanism further comprises a branch pipe (142), one end of which is fixed on the pipeline (14) and communicates with the explosion vent (141), and the pipe opening at the other end of the branch pipe (142) is used to replace the explosion vent (141).

Images