A force relief device for explosion protection
Patent Information
- Application Number
- CN202522573483.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-03
AI Technical Summary
Traditional explosion-proof panels cannot achieve gradual energy attenuation when facing explosive impacts, resulting in poor force dissipation and inability to effectively protect equipment and personnel safety.
An explosion-proof unloading device was designed, comprising a primary unloading unit and a secondary unloading unit. The device absorbs the initial impact energy through the deformation of the movable arm and spring, and performs secondary energy absorption through the unloading arm and shock absorber. Combined with a synchronization unit, the device ensures the synchronous movement of the unloading arm, thereby achieving multi-stage energy attenuation.
It achieves multi-stage, progressive energy dissipation, reduces the final impact force, enhances the stability and reliability of the device, extends its service life, provides sealing protection in the initial stage, and enables controlled pressure relief in case of overpressure.
Smart Images
Figure CN224932090U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of explosion-proof technology, specifically to an explosion-proof force-relieving device. Background Technology
[0002] In high-risk industrial sectors such as chemical, mining, and energy, explosions are among the most serious safety threats. To maximize the protection of personnel and the integrity of equipment in the event of an explosion, various explosion-proof and pressure-relief devices are widely used on the doors, windows, and walls of critical facilities such as control rooms, power distribution rooms, and hazardous materials storage warehouses. Currently, explosion-proof pressure-relief devices applied to walls are the most widely used.
[0003] Traditional explosion-proof panels can only buffer the explosive impact through their structural performance, without being able to achieve gradual energy attenuation. This results in poor overall stress relief performance of the protective structure. Therefore, there is an urgent need for an explosion-proof device that can achieve multi-stage, progressive stress relief and evenly distribute and absorb the impact energy to cope with complex and high-intensity explosive impacts. To this end, an explosion-proof stress relief device is proposed. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model provides an explosion-proof force relief device, which solves the defects and deficiencies in the existing technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An explosion-proof force-relieving device includes a supporting base plate, telescopic plates fixed at all four corners of the supporting base plate, a supporting top plate connected to the supporting base plate via the telescopic plates, a force-relieving groove on the surface of the supporting top plate, explosion-proof plates slidably mounted on both sides of the top of the supporting top plate, the surface of the explosion-proof plates having through grooves adapted to the force-relieving grooves, and a primary force-relieving unit installed in the middle of the supporting base plate and connected to the supporting top plate;
[0007] The first-level unloading unit includes a support base fixed to the surface of the support base plate. Movable arms are hinged to both sides inside the support base. A sliding seat is hinged to the top of the movable arm. The sliding seat is fixedly connected to the corresponding explosion-proof plate through a guide groove on the surface of the support top plate.
[0008] Among them, the surfaces of the two sliding seats are slidably fitted with guide rods fixed to the supporting top plate, and both ends of the guide rods are fitted with springs connected to the sliding seats. A secondary unloading unit is connected to the outside of the movable arm.
[0009] This invention relates to an explosion-proof force-relieving device that, through the establishment of a primary force-relieving unit and a secondary force-relieving unit, constitutes a highly efficient energy attenuation system. When the explosive impact force acts on the supporting top plate and the explosion-proof plate, the primary force-relieving unit first absorbs and buffers most of the initial impact kinetic energy through the expansion of the movable arm and the compression deformation of the spring; simultaneously, the impact force is transmitted to the secondary force-relieving unit through the movable arm, where the force-relieving arm and shock absorber absorb secondary energy. This multi-stage, progressive force-relieving method can dissipate the explosion energy more smoothly and thoroughly, effectively reducing the final impact force transmitted to the supporting bottom plate.
[0010] Preferably, support arms are fixed on both sides of the sliding seat, and a sliding rod is movably inserted through the surface of the support arm, and the sliding rod is fixedly connected to the support top plate.
[0011] Preferably, the secondary unloading unit includes an unloading arm hinged to the middle of the movable arm, a connecting rod fixed to the end of the unloading arm, a guide frame fixed to the surface of the support base plate slidably sleeved on the surface of the connecting rod, and a synchronization unit connected to the connecting rod.
[0012] Preferably, the synchronization unit includes support blocks fixed to both sides of the top of the support base plate, and a gear is movably connected to one side of the support block. The top and bottom of the gear are respectively meshed with an upper transmission gear plate and a lower transmission gear plate.
[0013] Preferably, one end of both the upper and lower transmission gear plates is fixedly connected to a connecting member, and the connecting member is fixed to the corresponding end of the connecting rod.
[0014] Preferably, the secondary unloading unit further includes a shock absorber hinged to the surface of the supporting base plate, one end of which is hinged to the corresponding connecting member.
[0015] Preferably, a guide plate is provided at the top of the support base plate near the synchronization unit, and the inner side of the guide plate is slidably connected to the corresponding upper transmission gear plate and lower transmission gear plate.
[0016] This utility model provides an explosion-proof force-relieving device. It has the following beneficial effects:
[0017] This invention relates to an explosion-proof force-relieving device that, through the establishment of a primary force-relieving unit and a secondary force-relieving unit, constitutes a highly efficient energy attenuation system. When the explosive impact force acts on the supporting top plate and the explosion-proof plate, the primary force-relieving unit first absorbs and buffers most of the initial impact kinetic energy through the expansion of the movable arm and the compression deformation of the spring; simultaneously, the impact force is transmitted to the secondary force-relieving unit through the movable arm, where the force-relieving arm and shock absorber absorb secondary energy. This multi-stage, progressive force-relieving method can dissipate the explosion energy more smoothly and thoroughly, effectively reducing the final impact force transmitted to the supporting bottom plate.
[0018] The synchronization unit (composed of gears, an upper transmission gear plate, and a lower transmission gear plate) ensures that the unloading arms and connecting rods on both sides move in sync. This allows the device to better distribute the force to the secondary unloading units on both sides when subjected to asymmetrical or eccentric impacts, reducing local structural overload, deformation, or damage caused by stress concentration. This greatly enhances the stability and reliability of the entire device and extends its service life.
[0019] The stress-relieving groove on the supporting top plate and the passage groove on the explosion-proof plate are ingeniously designed. Initially, the two grooves are misaligned, and the explosion-proof plate provides a sealed protection. When the impact force is too great, the first-stage stress-relieving unit activates, causing the explosion-proof plate to slide and align the passage groove with the stress-relieving groove, achieving active and controllable pressure relief and preventing a sudden increase in internal pressure. This method, combining rigid protection with dynamic pressure relief, effectively resists impacts in the initial stage and releases pressure promptly in case of overpressure, comprehensively improving protective performance. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof force-relieving device described in this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention;
[0022] Figure 3 This is a schematic diagram of the third embodiment of the present invention;
[0023] Figure 4 This is a side view of the structure of the present invention;
[0024] Figure 5 This is a top view of the structure of the present invention;
[0025] Figure 6 This is a schematic diagram of the structure of the part described in this utility model.
[0026] In the diagram, 1 is the supporting base plate; 11 is the telescopic plate;
[0027] 2. Supporting top plate; 21. Pressure relief groove; 22. Explosion-proof plate; 23. Passage groove;
[0028] 3. Primary unloading unit; 31. Support base; 32. Movable arm; 33. Sliding seat; 34. Guide rod; 35. Spring; 36. Guide groove;
[0029] 330. Support arm; 331. Slide bar;
[0030] 4. Secondary unloading unit; 41. Unloading arm; 42. Connecting rod; 43. Synchronization unit; 44. Shock absorber; 45. Guide frame; 46. Guide plate;
[0031] 430. Support block; 431. Gear; 432. Upper transmission gear plate; 433. Lower transmission gear plate; 434. Connecting component. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] Example:
[0034] like Figures 1-6 As shown, this utility model embodiment provides an explosion-proof force relief device, including a supporting base plate 1. Telescopic plates 11 are fixed at the four corners of the supporting base plate 1. The supporting base plate 1 is connected to a supporting top plate 2 through the telescopic plates 11. The supporting base plate 1 and the supporting top plate 2 can move closer or further apart through the telescopic plates 11. The surface of the supporting top plate 2 is provided with force relief grooves 21, and there are multiple force relief grooves 21. Explosion-proof plates 22 are slidably mounted on both sides of the top of the supporting top plate 2. The surface of the explosion-proof plates 22 has through grooves 23 that are adapted to the force relief grooves 21. A primary force relief unit 3 is installed in the middle of the supporting base plate 1 and connected to the supporting top plate 2.
[0035] like Figure 1 and Figure 2 As shown, the device is not subjected to the impact of the explosion at this time, so there is no need to unload the force. Therefore, the two explosion-proof plates 22 are in a combined state. The through groove 23 on the explosion-proof plate 22 in the combined state is staggered with the unloading groove 21 below, thus forming a blocking state for the unloading groove 21. When it is necessary to disperse the impact force later, the through groove 23 can form a corresponding state with the unloading groove 21 to achieve the dispersion of the impact force and energy absorption.
[0036] The first-level unloading unit 3 includes a support base 31 fixed to the surface of the support base plate 1. Both sides of the support base 31 are hinged with movable arms 32. The top of the movable arms 32 is hinged with a sliding seat 33. The sliding seat 33 is fixedly connected to the corresponding explosion-proof plate 22 through the guide groove 36 on the surface of the support top plate 2. In this embodiment, the hinge represents a movable connection. The sliding seat 33 can be connected to the corresponding explosion-proof plate 22 above through the function of the guide groove 36.
[0037] Among them, the surfaces of the two sliding seats 33 are slidably fitted with guide rods 34 that are fixed to the supporting top plate 2. Both ends of the guide rods 34 are fitted with springs 35 connected to the sliding seats 33. One end of the spring 35 is connected to the surface of the guide rod 34, and the other end is connected to the surface of the sliding seat 33. A secondary force-relieving unit 4 is connected to the outer side of the movable arm 32. Under the supporting force of the springs 35 in their natural state, both sliding seats 33 are as follows... Figure 1 The state shown indicates that the two explosion-proof panels 22 are in a fitted state.
[0038] This invention establishes a highly efficient energy attenuation system by incorporating a primary unloading unit 3 and a secondary unloading unit 4. When the explosive impact force acts on the supporting top plate 2 and the explosion-proof plate 22, the primary unloading unit 3 first causes the sliding seat 33 to slide on the surface of the guide rod 34 through the unfolding of the movable arm 32. In the sliding state, the sliding seat 33 can compress and deform the spring 35 to absorb and buffer most of the initial impact kinetic energy. Simultaneously, the impact force is transmitted to the secondary unloading unit 4 through the movable arm for secondary energy absorption. This multi-stage, progressive unloading method can dissipate the explosive energy more smoothly and thoroughly, effectively reducing the final impact force transmitted to the supporting bottom plate 1.
[0039] Furthermore, in another embodiment, support arms 330 are fixed on both sides of the sliding seat 33, and slide rods 331 are movably passed through the surface of the support arms 330. The slide rods 331 are fixedly connected to the support top plate 2. The slide rods 331 ensure that the sliding seat 33 slides smoothly when subjected to impact force, avoiding tilting and shaking.
[0040] Because the explosion-proof pressure relief device of this utility model has the above structure, the pressure relief groove 21 on the supporting top plate 2 and the through groove 23 on the explosion-proof plate 22 are ingeniously designed. In the initial stage, the pressure relief groove 21 and the through groove 23 are staggered, and the explosion-proof plate 22 provides sealing protection. When the impact force is too large, the first-stage pressure relief unit 3 is activated, and the sliding seat 33 in the sliding state will synchronously drive the explosion-proof plate 22 to slide, so that the through groove 23 is aligned with the pressure relief groove 21, realizing active and controllable pressure relief and preventing a sudden increase in internal pressure. This method of combining rigid protection with dynamic pressure relief can effectively resist impact in the initial stage and release pressure in time when overpressure occurs, thus improving the protection performance in all aspects.
[0041] Furthermore, in another embodiment, the secondary unloading unit 4 includes an unloading arm 41 hinged to the middle of the movable arm 32. The end of the unloading arm 41 is movably connected to a connecting rod 42, that is, the connecting rod 42 can rotate relative to the unloading arm 41 without shifting, shaking or falling off. The surface of the connecting rod 42 is slidably fitted with a guide frame 45 fixed to the surface of the support base plate 1. The connecting rod 42 is also connected to a synchronization unit 43. Through the setting of the guide frame 45, the sliding direction of the connecting rod 42 can be guided, thereby forming a guide for the sliding position of the end of the movable arm 32, ensuring its stability in the unloading state.
[0042] Furthermore, in another embodiment, the synchronization unit 43 includes support blocks 430 fixed to both sides of the top of the support base plate 1. A gear 431 is movably connected to one side of the support block 430. The top and bottom of the gear 431 are respectively meshed with an upper transmission gear plate 432 and a lower transmission gear plate 433.
[0043] The outer ends of the upper transmission toothed plate 432 and the lower transmission toothed plate 433 are fixedly connected to the connecting members 434, and the connecting members 434 are respectively fixed to the ends of the corresponding connecting rods 42.
[0044] The secondary unloading unit 4 also includes a shock absorber 44 hinged to the surface of the support base plate 1, one end of which is hinged to the corresponding connector 434.
[0045] When the above-mentioned device is subjected to an impact force, causing the top support plate 2 to slide toward the bottom support plate 1, the sliding seat 33 will slide outward, causing the movable arm 32 to swing outward, so that the end of the unloading arm 41 on it drives the connecting rod 42 to slide in the guide frame 45. In the sliding state, the connecting rod 42 will synchronously drive the corresponding upper transmission tooth plate 432 or lower transmission tooth plate 433 at both ends to slide through the connecting piece 434, and synchronously act on the shock absorber 44 to perform shock absorption.
[0046] Because the explosion-proof force-relieving device of this utility model has the above structure, the synchronization unit 43 (composed of gear 431, upper transmission gear plate 432 and lower transmission gear plate 433) ensures that the movement of the force-relieving arms 41 and connecting rod 42 on both sides remains synchronized. This allows the device to better distribute the impact force to the secondary force-relieving units 4 on both sides when subjected to asymmetrical or eccentric impacts, reducing local structural overload, deformation or damage caused by stress concentration, greatly enhancing the stability and reliability of the entire device, and extending its service life.
[0047] Furthermore, in another embodiment, such as Figure 1 and Figure 2As shown, a guide plate 46 is provided at the top of the support base plate 1 near the synchronization unit 43 (the guide plate 46 is omitted in other drawings). The inner side of the guide plate 46 is slidably connected to the corresponding upper transmission tooth plate 432 and lower transmission tooth plate 433. In this way, the upper transmission tooth plate 432 and lower transmission tooth plate 433 can be guided by the guide plate 46 to maintain horizontal sliding and will not wobble.
[0048] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.
[0049] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A force-relieving device for explosion protection, characterized in that: The system includes a support base plate (1), with telescopic plates (11) fixed at each of the four corners of the support base plate (1). The support base plate (1) is connected to a support top plate (2) via the telescopic plates (11). The surface of the support top plate (2) is provided with a stress relief groove (21). Explosion-proof plates (22) are slidably mounted on both sides of the top of the support top plate (2). The surface of the explosion-proof plate (22) has a through groove (23) that is compatible with the stress relief groove (21). A primary stress relief unit (3) is installed in the middle of the support base plate (1) and connected to the support top plate (2). The first-level unloading unit (3) includes a support base (31) fixed to the surface of the support base plate (1). Both sides of the support base (31) are hinged with movable arms (32). The top of the movable arm (32) is hinged with a sliding seat (33). The sliding seat (33) is fixedly connected to the corresponding explosion-proof plate (22) through the guide groove (36) on the surface of the support top plate (2). Among them, the surfaces of the two sliding seats (33) are slidably fitted with guide rods (34) that are fixed to the supporting top plate (2). Both ends of the guide rods (34) are fitted with springs (35) that are connected to the sliding seats (33). The outer side of the movable arm (32) is connected to a secondary unloading unit (4).
2. The explosion-proof force-relieving device according to claim 1, characterized in that: Both sides of the sliding seat (33) are fixed with support arms (330), and a sliding rod (331) is movably passed through the surface of the support arm (330), and the sliding rod (331) is fixedly connected to the support top plate (2).
3. The explosion-proof force-relieving device according to claim 1, characterized in that: The secondary unloading unit (4) includes an unloading arm (41) hinged to the middle of the movable arm (32). A connecting rod (42) is movably connected to the end of the unloading arm (41). A guide frame (45) fixed to the surface of the support base plate (1) is slidably sleeved on the surface of the connecting rod (42). A synchronization unit (43) is also connected to the connecting rod (42).
4. The explosion-proof force-relieving device according to claim 3, characterized in that: The synchronization unit (43) includes support blocks (430) fixed to the top two sides of the support base plate (1). A gear (431) is movably connected to one side of the support block (430). The top and bottom of the gear (431) are respectively meshed with an upper transmission gear plate (432) and a lower transmission gear plate (433).
5. The explosion-proof force-relieving device according to claim 4, characterized in that: One end of the upper transmission gear plate (432) and the lower transmission gear plate (433) are fixedly connected to a connector (434), and the connector (434) is fixed to the end of the corresponding connecting rod (42).
6. The explosion-proof force-relieving device according to claim 5, characterized in that: The secondary unloading unit (4) further includes a shock absorber (44) hinged to the surface of the support base plate (1), one end of which is hinged to the corresponding connector (434).
7. The explosion-proof force-relieving device according to claim 5, characterized in that: A guide plate (46) is provided at the top of the support base plate (1) near the synchronization unit (43), and the inner side of the guide plate (46) is slidably connected to the corresponding upper transmission tooth plate (432) and lower transmission tooth plate (433).