A pressure relief and explosion vent

Abstract

The utility model discloses a kind of pressure relief explosion doors, including main frame, subframe and door leaf;Main frame includes upper frame and two with its vertical fixed first side frame and second side frame;The height of first side frame and second side frame is consistent with the height of subframe;Wherein first side frame is connected between subframe by cable;Second side frame is connected between door leaf by hinge component, and the side of main frame, subframe and door leaf abutment is all provided with sealing structure;Subframe is provided with at least one explosion bolt that passes through it and main frame, when pressure relief explosion, explosion bolt is pressed off with subframe by pressure effect, simultaneously, subframe is separated from main frame and drives door leaf to open, realize to indoor space pressure relief explosion.This utility model adopts whole door leaf, without additional pressure relief window on door leaf, negative pressure will explosion bolt fall off when pressure relief explosion, in turn cause subframe to separate from main frame, simultaneously drive door leaf to open and realize door leaf whole pressure relief explosion can satisfy the discharge demand of large flow shock wave.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressure relief and explosion relief safety equipment, and in particular relates to a pressure relief and explosion relief door. Background Technology

[0002] With the improvement of my country's industrial system and the continuous enhancement of safety awareness, single pressure relief doors are no longer sufficient to meet the needs of various working conditions in special locations such as industrial workshops, fuel workshops, boiler rooms, and dust explosion-proof workshops. Typically, in special workshops, high negative pressure exists internally, requiring protection against damage and explosions to pipes or materials due to this pressure. Simultaneously, the protection of personnel and equipment from single or multiple external natural disasters must also be considered. Therefore, finding a comprehensive door that can achieve a certain pressure difference for explosion relief while also providing protection against single or multiple natural disasters has become a problem that needs to be solved.

[0003] Explosion relief doors are commonly used in industrial and civil plants, boiler rooms, hazardous materials warehouses, military warehouses, pharmaceutical companies, and other places. Explosion relief windows consist of explosion relief panels combined with locks and hardware accessories. The explosion relief pressure value is usually between 20 and 40 PSF. When an explosion or fire occurs inside a building, the gas pressure inside rises sharply. Explosion relief doors open the window and release pressure through explosion relief accessories or devices to control the explosion or minimize the damage.

[0004] Existing pressure relief and explosion relief door structures can be referenced from existing patents CN114033288B, "A Steel Explosion Relief Door," and CN216381102U, "A Safe Explosion Relief Structure for a Steel Explosion Relief Door." Existing technologies, including the aforementioned patents, typically employ localized pressure relief windows to achieve explosion relief, which limits the pressure relief area and makes it difficult to meet the requirements for discharging large-volume shock waves. Furthermore, traditional explosion relief door panels require lightweight materials (such as aluminum alloys and plastics) to ensure pressure relief effectiveness, resulting in insufficient structural strength and poor impact resistance, failing to simultaneously meet protection and explosion relief requirements.

[0005] To address the aforementioned problems, designing a pressure relief and explosion relief door is an important technical issue that those skilled in the art need to solve. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems existing in the prior art and to provide a pressure relief and explosion relief door.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A pressure relief and explosion-proof door includes at least a main frame, a sub-frame, and a door leaf. The main frame includes a top frame and two first side frames and a second side frame fixed perpendicularly to it. The heights of the first side frames and the second side frames are the same as the height of the sub-frame. The first side frames are connected to the sub-frame by a cable. The second side frames are connected to the door leaf by a hinge assembly. The sides of the main frame, the sub-frame, and the door leaf that abut against each other are provided with sealing structures to achieve sealing when the door leaf is closed. The sub-frame is provided with at least one explosion-proof bolt that penetrates it and the main frame. When pressure and explosion are relieved, the explosion-proof bolt is dislodged from the sub-frame under pressure, and the sub-frame separates from the main frame, causing the door leaf to open, thereby relieving pressure and explosion in the indoor space.

[0009] Preferably, the sealing structure includes a sealing strip and a fire-resistant expansion sealing strip; wherein the sealing strip is disposed on the outer side of the upper frame, the outer side of the second side frame, and the outer side of the sub-frame; the fire-resistant expansion sealing strip is disposed on the bottom surface of the upper frame, the inner side of the second side frame, and the inner side of the sub-frame; when the door is closed, its sidewalls abut against the sealing strip and the fire-resistant expansion sealing strip respectively.

[0010] Preferably, at least one fastening bolt is fixed on both the first side frame and the sub-frame, and the two ends of the winch are respectively fixed on the two fastening bolts located at the same height; when depressurizing or venting, the winch connects the sub-frame so that it detaches from the main frame and does not splash.

[0011] Preferably, a first fixing plate is provided between the first side frame and the sub-frame, and the first fixing plate is welded and fixed to the outer side of the first side frame; when not depressurizing or venting, the sub-frame abuts against the first fixing plate; the explosion venting bolt passes through the outer side of the sub-frame, the first fixing plate abutting against the outer side of the sub-frame, and the first side frame in sequence.

[0012] Preferably, at least one bending plate is further provided between the first side frame and the sub-frame. The bending plate is C-shaped, with its opening facing the inner side of the first side frame. The thickness of the bending plate is equivalent to that of the first fixing plate, and the bottom of the groove of the bending plate is flush with the end of the sub-frame.

[0013] Preferably, the hinge assembly is made of heavy-duty hinge, which includes a pin fixed to the second side frame, a roller bearing disposed in the pin, and a blade disposed on the roller bearing; the blade is connected to the door leaf by connecting bolts.

[0014] Preferably, the door leaf body is made of medium-thick plate, and fireproof layers are provided on both sides of the medium-thick plate, and at least one of the fireproof layers is covered with a galvanized layer on its outer surface.

[0015] Preferably, the door leaf is provided with a locking mechanism; the locking mechanism includes at least a first handle pivotally disposed on the inner and outer sides of the door leaf, rotating either of the first handles causes both first handles to rotate simultaneously, so that the end of the first handle disposed on the inner side of the door leaf abuts against or disengages from the fixing block on the inner side of the sub-frame, thereby locking or opening the door leaf; during normal use, rotating the first handles opens and closes the door leaf;

[0016] Preferably, the locking mechanism further includes a second handle disposed on the door leaf and a lock cylinder penetrating the door leaf. The lock cylinder includes a lock hole and a lock tongue, and the lock tongue extends and retracts to engage or disengage with the latch on the sub-frame to realize the opening and closing of the door leaf.

[0017] Preferably, the door also includes a threshold connecting the sub-frame and the second side frame, and the outer side of the threshold is provided with a sealing strip; when the door is closed, its inner side abuts against the sealing strip; and the bottom of the door is higher than the bottom of the threshold.

[0018] The advantages of this utility model's technical solution are mainly reflected in:

[0019] This utility model adopts an integral door leaf, eliminating the need for additional pressure relief windows on the door leaf. During pressure relief and explosion venting, the negative pressure first dislodges the explosion relief bolts, causing the sub-frame to detach from the main frame, and simultaneously opening the door leaf to achieve overall pressure relief and explosion venting of the door leaf, which can meet the requirements for releasing large-volume shock waves. At this time, the door leaf can be made of heavy materials to ensure its structural strength and improve its impact resistance, thus taking into account both protection and explosion venting requirements.

[0020] A winch connects the first side frame and the sub-frame to ensure that the sub-frame will not fly out while detaching from the first side frame during the depressurization and explosion relief process, thus improving safety during the depressurization and explosion relief process.

[0021] Both the main frame and the sub-frame are equipped with sealing structures to ensure the airtightness of the door when it is closed. At the same time, the door is wind-resistant, external-force-resistant, and fire-resistant.

[0022] The door is equipped with a locking mechanism to ensure both convenience during normal use and a high degree of airtightness. The use of a first handle and a lock cylinder provides double protection, meeting stringent airtightness standards. Attached Figure Description

[0023] Figure 1 : Front view of a preferred embodiment of this utility model;

[0024] Figure 2 : A first-direction cross-sectional view of the door in the closed state of a preferred embodiment of this utility model;

[0025] Figure 3 : A cross-sectional view of the door in the open state of the preferred embodiment of this utility model in the first direction;

[0026] Figure 4 : Second cross-sectional view of the door in the closed state of the preferred embodiment of this utility model. Detailed Implementation

[0027] The purpose, advantages, and features of this utility model will be illustrated and explained through the following non-limiting description of preferred embodiments. These embodiments are merely typical examples of applying the technical solutions of this utility model, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by this utility model.

[0028] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0029] This utility model discloses a pressure relief and explosion relief door, which includes at least the following: Figure 1 The diagram shows a main frame 1, a sub-frame 2, and a door panel 3. The main frame 1 includes a top frame 11 and two first side frames 12 and a second side frame 13 fixed perpendicularly to it. The heights of the first side frames 12 and the second side frames 13 are the same as the height of the sub-frame 2. Furthermore, the first side frames 12 and the sub-frame 2 are connected by a cable 7; specifically as shown... Figures 1 to 2 As shown, at least one fastening bolt 112 is fixed to both the first side frame 12 and the sub-frame 2, and both ends of the winch 7 are respectively fixed to the two fastening bolts 112 located at the same height. During pressure relief and explosion venting, the winch 7 connects the sub-frame 2 so that it detaches from the main frame 1 without splashing, effectively preventing injury to people after the sub-frame 2 detaches, and providing safety during pressure relief and explosion venting.

[0030] like Figures 1 to 3 As shown, the second side frame 13 is connected to the door leaf 3 via a hinge assembly 4, allowing the door leaf 3 to rotate and open / close. The hinge assembly 4 is made of heavy-duty hinges to ensure the door leaf 3 can bear the weight. Further details are as follows... Figure 1 and Figure 2As shown, the hinge assembly 4 includes a pin 41 fixed to the second side frame 13, a roller bearing 42 disposed within the pin 41, and a blade 43 disposed on the roller bearing 42. The blade 43 is connected to the door leaf 3 by a connecting bolt 44. The roller bearing 42 in the hinge assembly 4 allows for easy opening and closing of the door leaf 3, reducing operating force and improving ease of operation.

[0031] like Figure 1 As shown, the height of the door leaf 3 is not less than the height of the sub-frame 2, and the width of the door leaf 3 is not less than the shortest distance between the first side frame 12 and the second side frame 13. Furthermore, sealing structures are provided on the sides of the main frame 1, the sub-frame 2, and the door leaf 3 that abut against each other, so that the door leaf 3 is sealed when closed. Furthermore, combined with... Figure 1 and Figure 4 As shown, this utility model also includes a threshold 22 connecting the sub-frame 2 and the second side frame 13, and a sealing strip from the sealing structure is provided on the outer side of the threshold 22. When the door leaf 3 is closed, its inner side abuts against the sealing strip. The bottom of the door leaf 3 is higher than the bottom of the threshold 22 so that there is no friction between its bottom and the bottom surface during the opening and closing of the door leaf 3, improving the convenience of operation and extending the service life of the door leaf.

[0032] Combination Figure 2 and Figure 4 As shown, the sealing structure includes a sealing strip 8 and a fire-resistant expansion sealing strip 9. The sealing strip 8 is disposed on the outer side of the upper frame 11, the outer side of the second side frame 13, and the outer side of the sub-frame 2; the fire-resistant expansion sealing strip 9 is disposed on the bottom surface of the upper frame 11, the inner side of the second side frame 13, and the inner side of the sub-frame 2. When the door leaf 3 is closed, its sidewalls abut against the sealing strip 8 and the fire-resistant expansion sealing strip 9, respectively, providing airtightness and fire protection for the interior space.

[0033] like Figure 1 and Figure 2 As shown, at least one explosion relief bolt 6 is provided on the sub-frame 2, which penetrates the main frame 1. When the pressure is released and the explosion is released, the explosion relief bolt 6 is dislodged from the sub-frame 2 under pressure. At the same time, the sub-frame 2 separates from the main frame 1 and drives the door leaf 3 to open, thereby realizing the pressure release and explosion release of the indoor space.

[0034] like Figure 2As shown, a first fixing plate 10 is provided between the first side frame 12 and the sub-frame 2, and the first fixing plate 10 is welded and fixed to the outer side surface of the first side frame 12. The first fixing plate 10 separates the first side frame 12 and the sub-frame 2, and the sub-frame 2 abuts against the first fixing plate 10 when there is no pressure relief or explosion venting. The explosion venting bolt 6 passes through the outer side surface of the sub-frame 2, the first fixing plate 10 abutting against the outer side surface of the sub-frame 2, and the first side frame 12 in sequence.

[0035] Furthermore, at least one bent plate 101 is provided between the first side frame 12 and the sub-frame 2. The bent plate 101 is C-shaped, with its opening facing the inner side of the first side frame 12. The thickness of the bent plate 101 is comparable to that of the first fixing plate 10, and the bottom of the groove of the bent plate 101 is flush with the end of the sub-frame 2. The bent plate 101 further ensures the gap between the first side frame 12 and the sub-frame 2, while increasing sealing and aesthetics. Moreover, this invention preferably uses steel to make both the bent plate 101 and the first fixing plate 10.

[0036] like Figure 4 As shown, this utility model preferably uses a medium-thick plate 31 for the main body of the door leaf 3 to resist the penetration of external shock waves or flying objects from tornadoes. Fireproof layers 32 are provided on both sides of the medium-thick plate 31, and at least one of the outer surfaces of the fireproof layer 32 is covered with a galvanized layer 33. The fireproof layer 32 effectively improves the fire resistance of the door leaf 3, while the galvanized layer 33 enhances the aesthetics and corrosion resistance of the door leaf 3. The door leaf 3 uses steel plate, fireproof layers, and galvanized layers to ensure its impact resistance and fire resistance. Furthermore, the door leaf 3 and the hinge assembly 4 are designed with high load-bearing capacity and low torque opening and closing load to ensure durability and ease of operation.

[0037] like Figures 1 to 2 As shown, a locking mechanism 5 is provided on the door leaf 3. The locking mechanism 5 includes at least a first handle 51 pivotally disposed on the inner and outer sides of the door leaf 3. During normal use, rotating either of the first handles 51 causes both first handles 51 to rotate simultaneously, so that the end of the first handle 51 disposed on the inner side of the door leaf 3 abuts against or disengages from the fixing block 21 on the inner side of the sub-frame 2, thereby locking or opening the door leaf 3.

[0038] Furthermore, the locking mechanism 5 also includes a second handle 52 disposed on the door leaf 3 and a lock cylinder 53 penetrating the door leaf 3. The lock cylinder 53 includes a lock hole and a lock tongue, and the lock tongue extends and retracts to engage or disengage with the latch on the sub-frame 2 to open and close the door leaf 3. The first handle 51 and the lock cylinder 53 provide double security, ensuring that the indoor space is strictly sealed when the door leaf is locked, meeting the airtightness requirements. In addition, when the door leaf is closed, the sealing strip 8, the fire-resistant expansion sealing strip 9, the first handle 51, and the lock cylinder 53 meet strict airtightness standards.

[0039] This utility model has many other embodiments. All technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A pressure relief and explosion relief door, characterized in that: It includes at least a main frame (1), a sub-frame (2), and a door leaf (3); the main frame (1) includes a top frame (11) and two first side frames (12) and a second side frame (13) fixed vertically thereto; the height of the first side frames (12) and the second side frames (13) is the same as the height of the sub-frame (2); wherein the first side frames (12) and the sub-frame (2) are connected by a cable (7); the second side frames (13) and the door leaf (3) are connected by a hinge assembly (4), The main frame (1), the sub-frame (2), and the door leaf (3) are all provided with sealing structures on their sides to ensure that the door leaf (3) is sealed when closed. The sub-frame (2) is provided with at least one explosion-proof bolt (6) that penetrates it and the main frame (1). When the pressure is released and the explosion is released, the explosion-proof bolt (6) is dislodged from the sub-frame (2) under pressure. At the same time, the sub-frame (2) separates from the main frame (1) and drives the door leaf (3) to open, thereby releasing the pressure and explosion of the indoor space.

2. The pressure relief and explosion relief door according to claim 1, characterized in that: The sealing structure includes a sealing strip (8) and a fire-resistant expansion sealing strip (9); wherein the sealing strip (8) is disposed on the outer side of the upper frame (11), the outer side of the second side frame (13) and the outer side of the sub-frame (2); the fire-resistant expansion sealing strip (9) is disposed on the bottom surface of the upper frame (11), the inner side of the second side frame (13) and the inner side of the sub-frame (2); when the door leaf (3) is closed, its sidewalls abut against the sealing strip (8) and the fire-resistant expansion sealing strip (9) respectively.

3. The pressure relief and explosion relief door according to claim 1, characterized in that: At least one fastening bolt (112) is fixed on both the first side frame (12) and the sub-frame (2). The two ends of the winch (7) are respectively fixed on the two fastening bolts (112) located at the same height. When depressurizing and venting, the winch (7) connects the sub-frame (2) so that it falls off the main frame (1) and does not splash.

4. A pressure relief and explosion relief door according to claim 3, characterized in that: A first fixing plate (10) is provided between the first side frame (12) and the sub-frame (2), and the first fixing plate (10) is welded and fixed to the outer side of the first side frame (12); when not depressurizing or de-exploding, the sub-frame (2) abuts against the first fixing plate (10); the explosion relief bolt (6) passes through the outer side of the sub-frame (2), the first fixing plate (10) abutting against the outer side of the sub-frame (2), and the first side frame (12) in sequence.

5. A pressure relief and explosion relief door according to claim 4, characterized in that: At least one bending plate (101) is provided between the first side frame (12) and the sub-frame (2). The bending plate (101) is C-shaped and its opening faces the inner side of the first side frame (12). The thickness of the bending plate (101) is equivalent to that of the first fixing plate (10), and the bottom of the groove of the bending plate (101) is flush with the end of the sub-frame (2).

6. A pressure relief and explosion relief door according to claim 1, characterized in that: The hinge assembly (4) is made of heavy-duty hinge and includes a pin (41) fixed to the second side frame (13), a roller bearing (42) disposed in the pin (41) and a blade (43) disposed on the roller bearing (42); the blade (43) is connected to the door leaf (3) by a connecting bolt (44).

7. A pressure relief and explosion relief door according to claim 1, characterized in that: The main body of the door leaf (3) is made of medium-thick plate (31), and fireproof layers (32) are provided on both sides of the medium-thick plate (31). At least one of the outer surfaces of the fireproof layer (32) is covered with a galvanized layer (33).

8. A pressure relief and explosion relief door according to claim 1, characterized in that: The door leaf (3) is provided with a locking mechanism (5); the locking mechanism (5) includes at least a first handle (51) pivotally located on the inner and outer sides of the door leaf (3). Rotating either of the first handles (51) will cause both first handles (51) to rotate simultaneously, so that the end of the first handle (51) located on the inner side of the door leaf (3) abuts or disengages from the fixing block (21) on the inner side of the sub-frame (2), thereby locking or opening the door leaf (3); during normal use, rotating the first handle (51) will open or close the door leaf (3).

9. A pressure relief and explosion relief door according to claim 8, characterized in that: The locking mechanism (5) also includes a second handle (52) disposed on the door leaf (3) and a lock cylinder (53) passing through the door leaf (3). The lock cylinder (53) includes a lock hole and a lock tongue. The lock tongue extends and retracts to engage or disengage with the latch on the sub-frame (2) to realize the opening and closing of the door leaf (3).

10. A pressure relief and explosion relief door according to claim 1, characterized in that: It also includes a threshold (22) connecting the sub-frame (2) and the second side frame (13), and a sealing strip (8) is provided on the outer side of the threshold (22); when the door leaf (3) is closed, its inner side abuts against the sealing strip (8); the bottom of the door leaf (3) is higher than the bottom of the threshold (22).

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