Automatic pressure relief door structure with high safety

Abstract

The application relates to the technical field of explosion venting doors, in particular to a safe automatic pressure relief explosion venting door structure which comprises a door frame, a door plate and a turnover plate, a pressure relief opening is formed in the door plate, the upper end of the turnover plate is hingedly connected to the pressure relief opening of the door plate, a blocking mechanism is arranged in the turnover plate, the blocking mechanism can extend out of the turnover plate and rotate downward when the turnover plate rotates for pressure relief, a blocking plate is rotatably connected to the telescopic block, a first guide block is fixed to the slot of the mounting groove, a second guide block is fixedly connected to the blocking plate, the connecting seat can be pushed downward by the guide block when the connecting seat moves to the guide block position, the blocking plate extends out of the turnover plate and rotates downward to a vertical state when the turnover plate rotates outward, so that the blocking plate blocks the gravel during pressure relief, and damage caused by the flying gravel during pressure relief is prevented.

Description

Technical Field

[0001] This invention relates to the field of explosion relief door technology, and in particular to an explosion relief door structure with high safety and automatic pressure relief. Background Technology

[0002] In industrial production and warehousing, scenarios involving flammable and explosive media such as dust and combustible gases are prone to sudden increases in internal pressure due to equipment failure or improper operation, which can easily lead to explosions of containers or enclosed spaces, causing casualties and property damage. To control the hazards of explosions, explosion relief devices have become critical safety facilities. As a passive explosion relief device, the core function of an explosion relief door is to release pressure by opening the door when the pressure in a closed space reaches a preset threshold, thereby preventing the shock wave generated by the explosion from damaging the structure and the surrounding environment. The explosion relief door has a hinged flip-up plate on its door panel, which is fixed at the bottom with bolts. When an explosion occurs inside the building, the gas pressure pushes the explosion relief door, squeezing and breaking the bolts, thereby opening the flip-up plate to release the explosion. Because the top of the flap is hinged to the door panel, during the explosion venting process, the flap rotates and an opening is created between the bottom of the flap and the door panel. As a result, the gas pressure generated by the explosion flows downward along the flap. Consequently, the debris or cement fragments generated by the explosion will also be discharged from the opening between the bottom of the flap and the door panel. If people are near the explosion venting door, they may be injured by the debris generated by the explosion, thus causing confinement.

[0003] Therefore, we propose a highly safe explosion relief door structure with automatic pressure relief. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a highly safe automatic pressure relief explosion door structure, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-safety, automatically depressurizing explosion relief door structure, comprising: A door frame, a door panel, and a flip panel; the door panel has a pressure relief vent; the upper end of the flip panel is hinged to the pressure relief vent on the door panel; The flip plate is equipped with a blocking mechanism; when the flip plate rotates to release pressure, the blocking mechanism can extend out of the flip plate and rotate downward, thereby blocking the gravel discharged with the airflow without affecting the discharge of airflow during pressure release.

[0006] Preferably, the blocking mechanism includes a telescopic block, a blocking plate, a first guide block, and a second guide block; the lower end of the flip plate has an installation groove; the telescopic block is slidably connected in the installation groove; the blocking plate is rotatably connected to the telescopic block; the first guide block is fixed to the opening of the installation groove; the second guide block is fixedly connected to the blocking plate; when the connecting seat moves to the position of the guide block, it can be pushed downward by the guide block.

[0007] Preferably, a drive shaft and a driven shaft are rotatably connected within the mounting slot; a drive gear is fixedly connected to the drive shaft; a first take-up belt and a second take-up belt are fixedly connected to the front and rear ends of the telescopic block, respectively; the other ends of the first take-up belt are wound around the drive shaft; a through slot is provided on the telescopic block; the second take-up belt passes around the driven shaft, passes through the through slot, and finally winds around the drive shaft; an arc-shaped rack is fixedly connected to the door panel; the arc-shaped rack meshes with the drive gear.

[0008] By installing a baffle plate inside the flip plate, when the flip plate rotates outward, the baffle plate extends out of the flip plate and rotates downward to a vertical position, thereby blocking the gravel during depressurization and preventing damage caused by the flying gravel during depressurization.

[0009] Preferably, a metal block is fixedly connected to the flip plate; a support block is fixedly connected to the door plate; the support blocks are symmetrically arranged on the door plate; an electromagnet block is fixedly connected inside the support block; the electromagnet block and the metal block are arranged in opposite positions.

[0010] Preferably, a temperature sensor is installed inside the support block.

[0011] Preferably, a flexible buffer layer is fixedly connected inside the support block; the flexible buffer layer is located on the side of the electromagnet block away from the metal block.

[0012] By installing an electromagnet on the door panel, the electromagnet is used to attract and fix the flip plate, thus replacing the original pressure relief bolt. This prevents damage to the latch during the pressure relief process and eliminates the need for replacement after pressure relief is completed. At the same time, a temperature sensor is installed in conjunction with the electromagnet to adjust the current of the electromagnet in high-temperature environments and reduce the fixing force on the flip plate when the temperature rises sharply, thus depressurizing in advance before an explosion occurs.

[0013] The beneficial effects of this invention are: 1. The present invention provides a baffle plate inside the flip plate. When the flip plate rotates outward, the baffle plate extends out of the flip plate and rotates downward to a vertical position, thereby blocking the gravel during depressurization and preventing damage caused by the flying gravel during depressurization.

[0014] 2. This invention replaces the original pressure relief bolts by installing an electromagnet on the door panel and using the electromagnet to attract and fix the flip plate. This prevents damage to the latch during the pressure relief process and eliminates the need for replacement after pressure relief is completed. At the same time, a temperature sensor is installed in conjunction with the electromagnet to adjust the current of the electromagnet in high-temperature environments and reduce the fixing force on the flip plate when the temperature rises sharply, thus depressurizing in advance before an explosion occurs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the structure on the back of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point C in the middle; Figure 5 for Figure 1 A sectional view of the flip panel and door panel from the perspective of the section at point BB; Figure 6 for Figure 5 Enlarged view at point D; Figure 7 for Figure 5 Enlarged view at point E in the middle; Figure 8 This is a diagram showing the positional relationship between the drive shaft, drive gear, No. 1 winding belt, and No. 2 winding belt in this invention.

[0016] In the diagram: 1. Door frame; 11. Door panel; 12. Flip panel; 13. Pressure relief port; 21. Telescopic block; 22. Baffle plate; 23. Guide block No. 1; 24. Mounting groove; 25. Drive shaft; 26. Driven shaft; 27. Drive gear; 28. Through groove; 29. ​​Take-up belt No. 1; 3. Take-up belt No. 2; 31. Arc rack; 4. Metal block; 41. Electromagnetic block; 5. Support block; 54. Temperature sensor; 55. Flexible buffer layer; 6. Guide block No. 2. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Refer to the appendix of the instruction manual. Figures 1 to 8 A high-safety, automatically depressurized explosion relief door structure, comprising: The door frame 1, door panel 11, and flip panel 12; the door panel 11 is provided with a pressure relief port 13; the upper end of the flip panel 12 is hinged to the pressure relief port 13 on the door panel 11; The tilting plate 12 is equipped with a blocking mechanism. When the tilting plate 12 rotates to release pressure, the blocking mechanism can extend out of the tilting plate 12 and rotate downward, thereby blocking the gravel discharged with the airflow without affecting the discharge of airflow during pressure release.

[0019] In this invention, the blocking mechanism includes a telescopic block 21, a blocking plate 22, a first guide block 23, and a second guide block 6; the lower end of the flip plate 12 is provided with an installation groove 24; the telescopic block 21 is slidably connected in the installation groove 24; the blocking plate 22 is rotatably connected to the telescopic block 21; the first guide block 23 is fixed in the groove of the installation groove 24; the second guide block 6 is fixedly connected to the blocking plate 22; when the connecting seat moves to the guide block position, it can be pushed downward by the guide block.

[0020] In this invention, a drive shaft 25 and a driven shaft 26 are rotatably connected in the mounting groove 24; a drive gear 27 is fixedly connected to the drive shaft 25; a first take-up belt 29 and a second take-up belt 3 are fixedly connected to the front and rear ends of the telescopic block 21, respectively; the other ends of the first take-up belt 29 are wound around the drive shaft 25; a through groove 28 is provided on the telescopic block 21; the second take-up belt 3 passes around the driven shaft 26, passes through the through groove 28, and finally winds around the drive shaft 25; an arc-shaped rack 31 is fixedly connected to the door panel 11; the arc-shaped rack 31 meshes with the drive gear 27.

[0021] In this invention, the door frame 1 is connected to the building. When an explosion or other accident occurs inside the building, high pressure is generated inside the building. When the high pressure inside the building passes through the pressure relief port 13, it will push open the flip plate 12 on the pressure relief port 13 to relieve the pressure. During the process of the flip plate 12 being pushed open, the flip plate 12 rotates outward, so that the drive gear 27 inside the flip plate 12 moves along with the flip plate 12 and passes over the arc rack 31, thereby causing the drive gear 27 to drive the drive shaft 25 to rotate. During the rotation of the drive shaft 25, the first take-up belt 29 wound on the drive shaft 25 is unwound, while the second take-up belt 3 is wound up. This causes the second take-up belt 3 to bypass the driven shaft 26 and pull the telescopic block 21 outward. As a result, the telescopic block 21 moves the baffle plate 22 outward. After the first guide block 23 at the opening of the mounting groove 24 contacts the second guide block 6 on the baffle plate 22, it pushes the baffle plate 22 downward, causing the baffle plate 22 to rotate downward. When the baffle plate 22 moves to the opening position of the mounting groove 24, the baffle is in a downward vertical state. The air pressure inside the building will diffuse at a wide angle after being released through the pressure relief port 13. Therefore, during the pressure relief process at the pressure relief port 13, the debris flying out with the airflow impacts the baffle plate 22, thus the baffle plate 22 can block the debris from flying. After the pressure relief is completed, as the flip plate 12 rotates into the pressure relief port 13, the arc rack 31 drives the drive gear 27 and drive shaft 25 to rotate in the opposite direction. At this time, the drive shaft 25 winds up the first winding belt 29 and pulls the telescopic block 21 back into the mounting slot 24. The present invention provides a baffle plate 22 inside the flip plate 12. When the flip plate 12 rotates outward, the baffle plate 22 extends out of the flip plate 12 and rotates downward to a vertical state, thereby blocking the gravel during depressurization and preventing damage caused by the flying gravel during depressurization.

[0022] Example 2: Based on Example 1, refer to the appendix of the instruction manual. Figures 1 to 8 In this invention, a metal block 4 is fixedly connected to the flip plate 12; a support block 5 is fixedly connected to the door panel 11; the support blocks 5 are symmetrically arranged on the door panel 11; an electromagnet block 41 is fixedly connected inside the support block 5; the electromagnet block and the metal block 4 are arranged in opposite positions.

[0023] In this invention, a temperature sensor 54 is installed inside the support block 5.

[0024] In this invention, a flexible buffer layer 55 is fixedly connected inside the support block 5; the flexible buffer layer 55 is located on the side of the electromagnet block 41 away from the metal block 4.

[0025] In this invention, under normal conditions, the flip plate 12 is located inside the pressure relief port 13. At this time, the electromagnet block 41 on the flip plate 12 is facing the metal block 4 on the support block 5. The magnetic force between the metal block 4 and the electromagnet block 41 fixes the flip plate 12 inside the pressure relief port 13. Thus, this invention uses the metal block 4 and the electromagnet block 41 to replace the original pressure relief bolts to fix the flip plate 12. Therefore, the pin will not be damaged during the pressure relief process, and there is no need to replace it after the pressure relief is completed. At the same time, the automatic reset function without manual intervention can be achieved by the gravity of the flip plate 12 after the explosion is relieved. In contrast, the original pressure relief bolts were used for fixation. During the reset, the broken bolts needed to be removed. In addition, during daily maintenance, the pressure relief bolts needed to be pulled out for inspection to prevent corrosion of the pressure relief bolts from affecting the use, thus ensuring the reliability of the pressure relief bolts, which was very inconvenient. In this invention, the electromagnet block 41 can adjust the magnetic force by adjusting the current, thereby adjusting the force of fixing the flip plate 12, and then adjusting it according to the pressure threshold when the flip plate 12 opens when the pressure needs to be released; In this invention, a temperature sensor 54 is installed on the moving block, which allows the temperature sensor 54 to detect the temperature of the flipping block, the metal block 4, and the electromagnet block 41 in real time. As a result, the electromagnet block 41 can adjust the current according to the temperature, thereby reducing the change in magnetic force generated by the electromagnet block 41 due to temperature changes. At the same time, the temperature sensor 54 can also detect the temperature of the door panel 11. When a fire occurs in the building and the temperature of the door panel 11 of the explosion relief door rises sharply, the magnetic force of the electromagnet block 41 can be reduced, thereby reducing the explosion relief pressure threshold of the flipping plate 12. Explosion relief can be carried out as early as possible when the air pressure in the building is low, thus reducing the explosion relief pressure during subsequent violent explosions. In this invention, a flexible buffer layer 55 is provided on the side of the electromagnet block 41 away from the flip plate 12, thereby reducing the impact on the electromagnet block 41 during an explosion or explosion venting. This invention replaces the original pressure relief bolt by installing an electromagnet on the door panel 11 and using the electromagnet to attract and fix the flip plate 12. This prevents damage to the pin during the pressure relief process and eliminates the need for replacement after pressure relief. At the same time, a temperature sensor 54 is installed to cooperate with the electromagnet, which can adjust the current of the electromagnet in high-temperature environments and reduce the fixing force on the flip plate 12 when the temperature rises sharply, thus relieving pressure in advance before an explosion occurs.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-safety, automatically depressurizing explosion relief door structure, characterized in that: include A door frame (1), a door panel (11), and a flip panel (12); a pressure relief port (13) is provided on the door panel (11); the upper end of the flip panel (12) is hinged to the pressure relief port (13) on the door panel (11); The flip plate (12) is provided with a blocking mechanism; when the flip plate (12) rotates to release pressure, the blocking mechanism can extend out of the flip plate (12) and rotate downward, so as to block the gravel discharged with the airflow without affecting the discharge of the airflow during pressure release.

2. The explosion relief door structure with high safety and automatic pressure relief according to claim 1, characterized in that: The blocking mechanism includes a telescopic block (21), a blocking plate (22), a first guide block (23), and a second guide block (6); the lower end of the flip plate (12) is provided with an installation groove (24); the telescopic block (21) is slidably connected in the installation groove (24); the blocking plate (22) is rotatably connected to the telescopic block (21); the first guide block (23) is fixed in the groove of the installation groove (24); the second guide block (6) is fixedly connected to the blocking plate (22); when the connecting seat moves to the position of the guide block, it can be pushed downward by the guide block.

3. The explosion relief door structure with high safety and automatic pressure relief according to claim 2, characterized in that: The mounting groove (24) is rotatably connected to a drive shaft (25) and a driven shaft (26); a drive gear (27) is fixedly connected to the drive shaft (25); a first take-up belt (29) and a second take-up belt (3) are fixedly connected to the front and rear ends of the telescopic block (21); the other end of the first take-up belt (29) is wound around the drive shaft (25); a through groove (28) is provided on the telescopic block (21); the second take-up belt (3) passes around the driven shaft (26), passes through the through groove (28), and finally winds around the drive shaft (25); an arc-shaped rack (31) is fixedly connected to the door panel (11); the arc-shaped rack (31) meshes with the drive gear (27).

4. The explosion relief door structure with high safety and automatic pressure relief according to claim 3, characterized in that: A metal block (4) is fixedly connected to the flip plate (12); a support block (5) is fixedly connected to the door panel (11); the support blocks (5) are symmetrically arranged on the door panel (11); an electromagnet block (41) is fixedly connected inside the support block (5); the electromagnet block and the metal block (4) are arranged in opposite positions.

5. The explosion relief door structure with high safety and automatic pressure relief according to claim 4, characterized in that: A temperature sensor (54) is installed inside the support block (5).

6. The explosion relief door structure with high safety and automatic pressure relief according to claim 5, characterized in that: A flexible buffer layer (55) is fixedly connected inside the support block (5); the flexible buffer layer (55) is located on the side of the electromagnet block (41) away from the metal block (4).

7. The explosion relief door structure with high safety and automatic pressure relief according to claim 6, characterized in that: A connecting rod (5) is hinged between two adjacent reflectors (22); an adjusting rod (51) is screwed onto the insulating sleeve (15); an adjusting block (52) is rotatably connected to the adjusting rod (51); the adjusting block (52) is hinged to the uppermost reflector (22).

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