Equipotential structure for explosion venting plate

Abstract

The utility model relates to an equipotential structure for an explosion venting plate, and relates to the technical field of explosion-proof safety equipment. The device comprises a protective cover, an outlet flange, a strength film and a client flange which are all made of metal materials, the protective cover is provided with a first metal exposure area used for making contact with a bolt, the client flange is provided with a second metal exposure area used for making contact with a rivet nut, and a limiting ring is arranged between the outlet flange and the strength film. The limiting ring, the rivet nut and the bolt are all made of conductive materials and are resistant to electrochemical corrosion; the protective cover is conducted with a client flange through a bolt and a rivet nut to realize a grounding effect; the limiting ring can abut against the outlet flange and the strength film, the rivet nut can abut against the strength film and the client flange, and the outlet flange is communicated with the client flange through the limiting ring, the strength film and the rivet nut to achieve the grounding effect. The problems that the protective cover and the outlet flange carry charges after being used for a long time and are prone to generating static electricity can be solved, and potential safety hazards can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof safety equipment, and in particular to an equipotential structure for explosion venting panels. Background Art

[0002] Explosion vent panels are an important safety device used in flammable and explosive environments to prevent explosions caused by excessive pressure. In the event of an explosion, these panels rupture quickly, releasing internal pressure and protecting equipment and personnel.

[0003] An explosion vent panel typically consists of a protective cover 1, an outlet flange 12, a strength membrane 14, and a mounting flange 16. A ring of sealing gaskets is secured to the edges of the strength membrane 14 on both sides. The gasket closest to the outlet flange 12 is designated as the upper sealing gasket 13, and the gasket closest to the mounting flange 16 is designated as the lower sealing gasket 15. The mounting flange 16 is fixedly connected to the target device, such as a power distribution room or energy storage container. The mounting flange 16 is provided with a circle of mounting holes, each of which is secured with a rivet nut 2. The lower sealing gasket 15, strength membrane 14, upper sealing gasket 13, outlet flange 12, and protective cover 1 are positioned on the mounting flange 16, facing away from the target device.

[0004] One side of the protective cover 1 is a connecting edge 11, which abuts the outlet flange 12. Bolts are installed on the protective cover 1 and outlet flange 12 at positions corresponding to the rivet nuts 2. The bolts corresponding to the connecting edge 11 of the protective cover 1 sequentially penetrate the protective cover 1, outlet flange 12, upper sealing gasket 13, strength membrane 14, and lower sealing gasket 15, and are threaded onto the rivet nuts 2. Bolts offset from the connecting edge 11 of the protective cover 1 sequentially penetrate the outlet flange 12, upper sealing gasket 13, strength membrane 14, and lower sealing gasket 15, and are threaded onto the rivet nuts 2. Because the protective cover needs to be lightweight to reduce the force required to push the strength membrane when it flips under pressure, it is typically made of aluminum. The outlet flange, on the other hand, needs to maintain structural stability during an explosion and is typically made of cast iron. The protective cover and outlet flange are in contact with each other, and after prolonged use, an electrochemical reaction will occur between them, causing electrocorrosion of the protective cover and outlet flange, impacting the service life of the entire explosion vent.

[0005] Currently, to address this issue, plastic spraying is typically performed on the protective cover to prevent direct contact between the protective cover and the outlet flange, which could lead to galvanic corrosion. However, after long-term use, both the protective cover and the outlet flange will carry a certain charge, which can easily generate static electricity and pose a safety hazard. Utility Model Content

[0006] In order to alleviate the problem that the protective cover and the outlet flange become charged and prone to static electricity after long-term use, posing a safety hazard, the present application provides an equipotential structure for the explosion venting plate.

[0007] The present application provides an equipotential structure for explosion venting panels that adopts the following technical solutions:

[0008] An equipotential structure for an explosion venting panel, wherein a protective cover, an outlet flange, a strength membrane, and a client flange are all made of metal, and the surfaces of the protective cover and the client flange are sprayed with plastic. The protective cover is provided with a first metal exposure area for contacting bolts, and the client flange is provided with a second metal exposure area for contacting rivet nuts. A limiting ring is provided between the outlet flange and the strength membrane. The limiting ring, rivet nuts, and bolts are all made of conductive materials and are resistant to electrochemical corrosion.

[0009] The protective cover is connected to the client flange through the bolts and the rivet nuts to achieve a grounding effect; the limiting ring is used to abut the outlet flange and the strength membrane, the rivet nut can abut the strength membrane and the client flange, and the outlet flange is connected to the client flange through the limiting ring, the strength membrane and the rivet nut to achieve a grounding effect.

[0010] By adopting this technical solution, direct contact between the protective cover and the outlet flange is restricted, preventing electrocorrosion caused by potential differences and improving the stability and durability of the explosion vent. The protective cover and outlet flange are electrically connected and grounded to the outlet flange via retaining rings, bolts, and rivet nuts. This creates a reliable grounding path between the protective cover and outlet flange, ensuring that electrical charges are promptly transferred to the earth and preventing the dangers that could result from charge accumulation.

[0011] Optionally, the limiting ring, rivet nut and bolt are all made of stainless steel.

[0012] By adopting this technical solution, the retaining ring, rivet nuts, and bolts are all designed to be made of stainless steel, further enhancing the structure's corrosion resistance and electrical conductivity. Stainless steel has excellent corrosion resistance and high mechanical strength, maintaining stable performance in harsh environments and extending the service life of the equipment.

[0013] Optionally, a pressure plate is provided on the connecting edge of the protective cover, and the pressure plate can be connected to the target device and press the connecting edge of the protective cover.

[0014] By adopting the above technical solution, a pressure plate is installed on the connecting edge of the protective cover and is tightened to the connecting edge with bolts, thereby enhancing the stability of the connection. This design helps prevent the protective cover from being blown away during the explosion pressure relief process, reduces the risk of injury from the protective cover being blown away, and improves the overall stability and safety of the equipment.

[0015] Optionally, the bolts corresponding to the connection edge of the protective cover pass through the pressure plate and press the pressure plate tightly against the connection edge of the protective cover.

[0016] By adopting this technical solution, the bolts penetrate the pressure plate and abut against the edge of the protective cover connection, not only securing the pressure plate, but also further enhancing the reliability of the bolt connection. This dual tightening mechanism ensures that the connection components are not easily loosened when subjected to external forces, improving the equipment's impact resistance.

[0017] Optionally, the connecting edge portion extends out of the pressure plate, and the portion of the connecting edge portion extending out of the pressure plate is connected to the client flange through the bolt and the rivet nut.

[0018] By adopting the above technical solution, the connecting edge extends out of the pressure plate and is connected to the client flange through bolts and rivet nuts, thereby achieving the grounding discharge effect of the protective cover.

[0019] Optionally, the thickness of the limiting ring is smaller than the thickness of the upper sealing gasket.

[0020] By adopting the above technical solution, the thickness of the limiting ring is designed to be smaller than the thickness of the upper sealing gasket under normal conditions, so as to limit the compressive deformation of the upper sealing gasket.

[0021] Optionally, the thickness of the retaining ring of the rivet nut is smaller than the thickness of the lower sealing gasket.

[0022] By adopting the above technical solution, the thickness of the retaining ring of the rivet nut is smaller than the thickness of the lower sealing gasket under normal conditions, which is used to limit the compressive deformation of the lower sealing gasket.

[0023] Optionally, waterproof glue is applied around the bolt and the rivet nut, and waterproof glue is applied between the bolt and the rivet nut.

[0024] By adopting the above technical solution, the connection parts of the bolts and rivet nuts are coated with waterproof glue, which effectively prevents the intrusion of water and moisture.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The protective cover and the outlet flange are connected to the client flange through the limit ring, bolts and rivet nuts to achieve the effect of grounding. A reliable grounding path is formed between the protective cover and the client flange, ensuring that the charge can be introduced into the ground in time, preventing the danger caused by charge accumulation;

[0027] 2. A pressure plate is installed on the connecting edge of the protective cover and is tightened to the connecting edge with bolts, enhancing the stability of the connection. This design helps prevent the protective cover from being blown away during the explosion pressure relief process, reduces the risk of injury from the protective cover being blown away, and improves the overall stability and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0029] Figure 2 This is a cross-sectional view of Example 1 of the present application, which is used to reflect the protective cover, outlet flange, upper sealing gasket, strength membrane, lower sealing gasket and client flange.

[0030] Figure 3 This is an exploded view of Example 1 of the present application, which is used to reflect the protective cover, outlet flange, upper sealing gasket, strength membrane, lower sealing gasket and client flange.

[0031] Figure 4 yes Figure 3 Enlarged schematic diagram of part A.

[0032] Figure 5 This is a schematic structural diagram of Example 1 of the present application for reflecting the second metal exposure area.

[0033] Figure 6 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0034] Figure 7 yes Figure 6 Schematic diagram of the enlarged portion B.

[0035] Figure 8 This is an exploded view of the pressure plate used in Example 2 of the present application.

[0036] Explanation of the accompanying drawings: 1. Protective cover; 11. Connecting edge; 12. Outlet flange; 13. Upper sealing gasket; 14. Strength membrane; 15. Lower sealing gasket; 16. Client flange; 2. Rivet nut; 21. Retaining ring; 22. First bolt; 23. Second bolt; 3. Limiting ring; 4. First metal exposure area; 41. Second metal exposure area; 42. First through hole; 43. Second through hole; 5. Pressure plate. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-8This application is described in further detail. Example 1

[0038] like Figure 1 and Figure 2 The bolts at the outlet flange 12 corresponding to the connecting edge 11 of the protective cover 1 are marked as first bolts 22 , and the bolts at other areas are marked as second bolts 23 .

[0039] like Figure 2 and Figure 3 The second bolt 23 sequentially passes through the outlet flange 12, the upper sealing gasket 13, the strength membrane 14 and the lower sealing gasket 15 and is threadedly connected to the rivet nut 2. The first bolt 22 sequentially passes through the connecting edge 11, the outlet flange 12, the upper sealing gasket 13, the strength membrane 14 and the lower sealing gasket 15 and is threadedly connected to the rivet nut 2.

[0040] The protective cover 1, the outlet flange 12, the strength membrane 14 and the client flange 16 are all made of metal, and the surfaces of the protective cover 1 and the client flange 16 are sprayed with a plastic insulation layer.

[0041] The present application embodiment discloses an equipotential structure for explosion venting panels. Figure 4 and Figure 5 The protective cover 1 for the equipotential structure of the explosion venting panel has a reserved first metal exposure area 4 in the spray-coated layer at the bolt position. When the bolt head of the first bolt 22 abuts the first metal exposure area 4, the first bolt 22 is electrically connected to the protective cover 1. The client flange 16 is provided with a second metal exposure area 41 for contacting the rivet nut 2 and the target device. When the retaining ring 21 of the rivet nut 2 abuts the corresponding first metal exposure area 4, the rivet nut 2 and the client flange 16 are electrically connected.

[0042] like Figure 2 and Figure 3 Several limiting rings 3 are provided on the side of the strength membrane 14 facing the outlet flange 12. The first bolts 22 and the second bolts 23 each correspond to the limiting rings 3, and the limiting rings 3 are sleeved on the corresponding first bolts 22 or second bolts 23. The upper sealing gasket 13 has a first through-hole 42 corresponding to the position of each limiting ring 3. The limiting ring 3 is located in the corresponding first through-hole 42. The thickness of the limiting ring 3 is less than the thickness of the upper sealing gasket 13 under normal conditions. The lower sealing gasket 15 has a second through-hole 43 corresponding to the position of each rivet nut 2. The retaining ring 21 of each rivet nut 2 is located in the corresponding second through-hole 43. The thickness of the retaining ring 21 of each rivet nut 2 is less than the thickness of the lower sealing gasket 15 under normal conditions.

[0043] The operator tightens the first bolts 22 and the second bolts 23, causing the upper and lower gaskets 13 and 15 to deform under pressure, thereby improving the sealing effect between the strength membrane 14 and the outlet flange 12, as well as the sealing effect between the strength membrane 14 and the client flange 16. The limiting ring 3 and the retaining ring 21 of the rivet nut 2 limit the deformation of the upper and lower gaskets 13 and 15.

[0044] In addition, the limiting ring 3, the rivet nut 2, the first bolt 22 and the second bolt 23 are all made of conductive materials and are not susceptible to galvanic corrosion with other metals, such as aluminum, iron, carbon steel, etc. The limiting ring 3, the rivet nut 2, the first bolt 22 and the second bolt 23 can be made of copper, titanium alloy, stainless steel or aluminum alloy, etc. In the embodiment of the present application, stainless steel is used.

[0045] After tightening the first bolt 22 and the second bolt 23, the upper end of the strength membrane 14 abuts against the outlet flange 12 through the limit ring 3, and the lower end of the strength membrane 14 abuts against the rivet nut 2, and then contacts the target device through the client flange 16, achieving the grounding discharge effect of the outlet flange 12.

[0046] The connecting edge 11 of the protective cover 1 is connected to the client flange 16 through the first bolt 22 and the rivet nut 2, and then contacts the target device through the client flange 16 to achieve the grounding discharge effect of the protective cover 1.

[0047] By preventing the outlet flange 12 from contacting the protective cover 1 and grounding the outlet flange 12 and the protective cover 1 respectively for discharge, the problem of sparks generated by static electricity and the resulting safety hazard can be alleviated.

[0048] The protective cover 1 is sealed with glue at the positions corresponding to the first bolts 22, the outlet flange 12 is sealed with glue at the positions corresponding to the second bolts 23, the client flange 16 is sealed with glue at the positions corresponding to the rivet nuts 2, and the first bolts 22 and the second bolts 23 are sealed with glue between the corresponding rivet nuts 2. The sealant is silicone sealant or vulcanized silicone rubber. Example 2

[0049] like Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that a pressure plate 5 is provided on the side of the connecting edge 11 of the protective cover 1 facing away from the outlet flange 12. The pressure plate 5 is used to press the connecting edge 11 against the outlet flange 12, thereby increasing the fixing area of ​​the protective cover 1 on the outlet flange 12 and increasing the strength, thereby reducing the problem that the impact force on the protective cover 1 is too large when the strength membrane 14 ruptures, causing the protective cover 1 to be torn from the position of the first bolt 22.

[0050] The pressure plate 5 and the corresponding first bolt 22 are sealed with glue.

[0051] When the pressing plate 5 presses the connecting edge 11 of the protective cover 1 against the outlet flange 12 , the protective cover 1 and the first bolt 22 are hardly connected due to the plastic spraying on the surface of the protective cover 1 .

[0052] like Figure 7 and Figure 8 The connecting edge 11 needs to partially extend outside the pressure plate 5, and the extending portion of the connecting edge 11 extending outside the pressure plate 5 is penetrated by a first bolt 22, and the first bolt 22 sequentially penetrates the connecting edge 11, the outlet flange 12, the upper sealing gasket 13, the strength membrane 14 and the lower sealing gasket 15 and is threadedly connected to the rivet nut 2, so that the protective cover 1 can be smoothly connected to the client flange 16 through the first bolt 22 and the rivet nut 2, and then contact the target device through the client flange 16, thereby achieving the effect of grounding discharge of the outlet flange 12.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An equipotential structure for an explosion venting panel, characterized in that: The protective cover (1), the outlet flange (12), the strength membrane (14) and the client flange (16) are all made of metal, and the surfaces of the protective cover (1) and the client flange (16) are sprayed with plastic. The protective cover (1) is provided with a first metal exposure area (4) for contacting the bolt, and the client flange (16) is provided with a second metal exposure area (41) for contacting the rivet nut (2). A limiting ring (3) is provided between the outlet flange (12) and the strength membrane (14), and the limiting ring (3), the rivet nut (2) and the bolt are all made of conductive materials and are resistant to electrochemical corrosion. The protective cover (1) is connected to the client flange (16) through the bolts and the rivet nut (2) to achieve a grounding effect; the limiting ring (3) can abut the outlet flange (12) and the strength membrane (14), the rivet nut (2) can abut the strength membrane (14) and the client flange (16), and the outlet flange (12) is connected to the client flange (16) through the limiting ring (3), the strength membrane (14) and the rivet nut (2) to achieve a grounding effect.

2. The equipotential structure for explosion venting panels according to claim 1, characterized in that: The limiting ring (3), the rivet nut (2) and the bolt are all made of stainless steel.

3. The equipotential structure for explosion venting panels according to claim 1, characterized in that: A pressure plate (5) is provided on the connection edge (11) of the protective cover (1), and the pressure plate (5) is capable of connecting to a target device and pressing the connection edge (11) of the protective cover (1).

4. The equipotential structure for explosion venting panels according to claim 3, characterized in that: The bolts corresponding to the connection edge (11) of the protective cover (1) penetrate the pressure plate (5) and press the pressure plate (5) against the connection edge (11) of the protective cover (1).

5. The equipotential structure for explosion venting panels according to claim 3, characterized in that: The connecting edge (11) partially extends out of the pressure plate (5), and the portion of the connecting edge (11) that extends out of the pressure plate (5) is connected to the client flange (16) through the bolt and the rivet nut (2).

6. The equipotential structure for explosion venting panels according to claim 1, characterized in that: The thickness of the limiting ring (3) is smaller than the thickness of the upper sealing gasket (13).

7. The equipotential structure for explosion venting panels according to claim 1, characterized in that: The thickness of the retaining ring (21) of the rivet nut (2) is smaller than the thickness of the lower sealing gasket (15).

8. The equipotential structure for explosion venting panels according to claim 1, characterized in that: Waterproof glue is applied around the bolt and the rivet nut (2), and waterproof glue is applied between the bolt and the rivet nut (2).

Images