Mechanical atmospheric venting device

Abstract

The application relates to the technical field of safety protection, in particular to a mechanical atmosphere-communicating explosion-proof device, which comprises a first mounting seat fixed on a furnace body, a first communication channel communicated with an inner cavity of the furnace body is arranged in the middle of the first mounting seat, a second mounting seat is detachably connected to the upper end of the first mounting seat, a second communication channel communicated with the first communication channel is arranged in the middle of the second mounting seat, a sealing cover is arranged in the second communication channel, an intermediate layer capable of being melted at a set temperature is arranged between the sealing cover and the second communication channel, and the components are matched through limiting parts and positioning parts; the application further comprises various designs such as the shape of the first mounting seat, a sealing mode, a clamp structure, a positioning ring, a protective net and a sealing label. The application achieves the technical effects of realizing atmosphere-communicating explosion-proof at the set temperature, ensuring the sealing property, stability and safety of the device through various structural designs, and preventing human damage.

Description

Technical Field

[0001] This application relates to the field of safety protection technology, and in particular to a mechanical atmospheric explosion-proof device. Background Technology

[0002] In the field of boiler technology, vacuum boilers, with their negative pressure operation, have demonstrated certain advantages in terms of safety and energy efficiency. With the development of technology, the application scope of boilers is constantly expanding, involving numerous fields such as heating and industrial production. Their stable and reliable operation is crucial for ensuring people's lives and production activities.

[0003] In existing technology, although boilers are equipped with safety devices such as temperature sensors, temperature fuses, water level monitoring, vacuum monitoring, and pressure switches protected by the main controller, when these safety devices fail or the main controller's electronic protection malfunctions, the boiler becomes uncontrollable and continues to burn. The temperature inside the furnace continuously rises, generating a large amount of steam, which poses an explosion risk. Therefore, in addition to the existing safety devices, there is an urgent need for a mechanically vented explosion-proof device. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a mechanical atmospheric explosion-proof device that can automatically depressurize after reaching a certain temperature inside the furnace, thus ensuring the safety of the furnace.

[0005] This application is achieved through the following technical solution:

[0006] A mechanical atmospheric explosion-proof device includes a first mounting base fixed to a furnace body. The first mounting base has a first connecting channel in the middle that communicates with the inner cavity of the furnace body. The upper end of the first mounting base has a detachably connected second mounting base. The middle of the second mounting base has a second connecting channel that communicates with the first connecting channel. A sealing cover is provided in the second connecting channel, and an intermediate layer capable of melting at a set temperature is provided between the sealing cover and the second connecting channel. The inner wall of the second connecting channel has a first limiting part, and the outer wall of the intermediate layer has a first positioning part adapted to the first limiting part. The inner wall of the intermediate layer has a second limiting part, and the edge of the sealing cover has a second positioning part adapted to the second limiting part.

[0007] By adopting the above technical solution, the device can achieve communication between the furnace body and the outside atmosphere. When the furnace body reaches the set temperature, the intermediate layer melts, the sealing cover falls off, and the internal pressure of the furnace body is released through the first and second connecting channels, thereby preventing the risk of explosion due to excessive pressure inside the furnace body. Furthermore, through the cooperation of the first limiting part and the first positioning part, and the second limiting part and the second positioning part, the installation position of the intermediate layer and the sealing cover is ensured to be accurate, ensuring the normal operation of the device and improving the safety performance of the boiler. The second connecting channel is sealed by a combination of a small amount of intermediate layer and sealing cover, which reduces the cost of the sensitive materials used in the intermediate layer. Moreover, the combination of intermediate layer and sealing cover increases the inner diameter of the second connecting channel, thereby allowing the sealing cover to release pressure more quickly after falling off.

[0008] Optionally, the first mounting base has a circular disc-shaped structure, and a plurality of bolt holes are evenly distributed on the upper end of the first mounting base; the second mounting base is fixed to the first mounting base by fastening bolts.

[0009] By adopting the above technical solution, the first mounting base has a circular disc structure, which is convenient for processing and installation. Several bolt holes are evenly distributed on the upper end, and the second mounting base is fixed on the first mounting base by fastening bolts. This allows for a detachable connection between the first and second mounting bases, which facilitates the assembly, maintenance, and replacement of the device. At the same time, it ensures the stability and sealing of the connection between the two, which helps to improve the reliability of the connection between the mechanical atmospheric explosion-proof device and the furnace body. This enhances the overall device's function of preventing boiler explosions and improves the boiler's safety performance.

[0010] Optionally, the upper end face of the first mounting base is provided with a first sealing groove, and a first sealing strip is provided in the first sealing groove.

[0011] By adopting the above technical solution, a first sealing groove is provided on the upper end face of the first mounting base and a first sealing strip is provided therein, which can enhance the sealing between the first mounting base and the second mounting base, further ensure the overall sealing performance of the mechanical atmospheric explosion-proof device, improve the protective effect of the device on the furnace body during normal operation, reduce the risk of gas leakage inside the furnace body, and thus improve the safety performance of the boiler.

[0012] Optionally, the first limiting part includes a limiting groove disposed on the inner wall of the second communicating channel.

[0013] By adopting the above technical solution, the limiting groove provided on the inner wall of the second connecting channel is used as the first limiting part, which is adapted to the first positioning part on the outer wall of the intermediate layer. This allows for accurate limiting and positioning of the intermediate layer, ensuring that the intermediate layer is accurately positioned in the second connecting channel. This, in turn, ensures the overall structure of the device is stable and reliable, and better realizes the function of allowing the intermediate layer to melt and the furnace body to communicate with the atmosphere when the furnace body temperature reaches the set value, thereby releasing pressure and preventing boiler explosion, and improving the safety performance of the boiler.

[0014] Optionally, the second positioning part includes a positioning shoulder on the inner wall of the intermediate layer, and the inner diameter of the second connecting channel closer to the first connecting channel is larger than the inner diameter farther from the first connecting channel.

[0015] By adopting the above technical solution, based on the original explosion-proof device consisting of a first mounting base fixed on the furnace body, a second mounting base detachably connected to the first mounting base, a sealing cover and intermediate layer designed in the second connecting channel, a first limiting part cooperating with the first positioning part, and a second limiting part cooperating with the second positioning part, the setting of the positioning shoulder can further strengthen the positioning cooperation between the sealing cover and the intermediate layer. The specific inner diameter design of the second connecting channel is conducive to guiding the gas flow direction, better ensuring that when the furnace body reaches the set temperature and the intermediate layer melts, the sealing cover will normally detach, allowing the furnace body to communicate with the atmosphere, releasing the pressure inside the furnace body, and improving the boiler safety performance.

[0016] Optionally, the outer wall of the first mounting base has a T-shaped structure, and the mounting surface of the first mounting base is provided with a clamp for fixing the second mounting base to the first mounting base, and the clamp is fixed by bolts, and the clamp has a U-shaped structure.

[0017] By adopting the above technical solution, the outer wall of the first mounting seat with a T-shaped structure and a U-shaped clamp are used in conjunction, and the clamp is then fixed with bolts to achieve the fixation of the second mounting seat to the first mounting seat. This ensures the stability of the mechanical atmospheric explosion-proof device structure, thereby better preventing the boiler from exploding due to excessive pressure inside the furnace and improving the boiler's safety performance.

[0018] Optionally, a positioning ring is provided at the end of the second connecting channel near the first connecting channel, and the positioning ring abuts against the outer wall of the intermediate layer.

[0019] By adopting the above technical solution, the positioning ring can be used to abut against the outer wall of the intermediate layer to position the intermediate layer, ensuring the relative position stability of each component of the device. This ensures the reliable realization of the function of melting the intermediate layer when the furnace reaches a certain temperature, allowing the furnace interior to communicate with the external atmosphere, releasing internal pressure to prevent explosion, and ultimately improving the boiler's safety performance.

[0020] Optionally, the lower end face of the sealing cover is provided with a second sealing groove, and a second sealing strip is provided in the second sealing groove.

[0021] By adopting the above technical solution, the sealing performance between the sealing cap and the second connecting channel is further improved, reducing the risk of gas leakage.

[0022] Optionally, the second mounting base is provided with a protective net, which is placed on the sealing cover.

[0023] By adopting the above technical solution, it is possible to effectively prevent the sealing cover from splashing under high pressure after it falls off, thus preventing injury to workers, further improving the reliability and stability of the device, and thereby enhancing the safety performance of the boiler.

[0024] Optionally, a seal is provided between the sealing cap and the second mounting base to prevent tampering.

[0025] By adopting the above technical solution, based on the original method of melting the intermediate layer by raising the furnace body temperature and releasing pressure by communicating the furnace body with the atmosphere to prevent boiler explosion and thus improve boiler safety performance, a seal is set between the sealing cover and the second mounting base to prevent the mechanical atmospheric explosion-proof device from being deliberately damaged, further ensuring the safety performance of the boiler.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application achieves the following: after the furnace reaches a certain temperature, the intermediate layer melts, causing the sealing cover to fall off, allowing the furnace interior to communicate with the external atmosphere, releasing internal pressure, and preventing the risk of explosion due to excessive pressure inside the furnace.

[0028] 2. This application enables the intermediate layer and the sealing cover to be accurately installed and positioned in the device through the cooperation of the first limiting part and the first positioning part, and the second limiting part and the second positioning part.

[0029] 3. This application uses a protective netting cover on the sealing cover to prevent splashing and injury to workers if the sealing cover falls off. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the explosion-proof device structure described in Embodiment 1;

[0031] Figure 2 This is a schematic diagram of the intermediate layer described in Embodiment 1;

[0032] Figure 3 This is a schematic diagram of the seal installation structure described in Embodiment 1;

[0033] Figure 4 This is a schematic diagram of the overall structure of the clamp described in Embodiment 2;

[0034] Figure 5 This is a schematic diagram of the protective net structure described in Embodiment 2.

[0035] In the diagram: 1. Furnace body; 2. First mounting base; 21. First connecting channel; 211. Positioning ring; 22. Bolt hole; 23. First sealing groove; 231. First sealing strip; 24. T-shaped structure; 25. Clamp; 251. U-shaped structure; 26. Bolt; 3. Second mounting base; 31. Second connecting channel; 311. Sealing cover; 3111. Second positioning part; 312. First limiting part; 313. Limiting groove; 32. Intermediate layer; 321. First positioning part; 322. Second limiting part; 33. Fastening bolt; 34. Protective net; 35. Seal; 36. Second sealing groove; 361. Second sealing strip. Detailed Implementation

[0036] The technical solutions of various embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Example 1

[0038] Reference Figures 1-3 This application discloses a mechanical atmospheric explosion-proof device, including a first mounting base 2 fixed on a furnace body 1. The first mounting base 2 has a first connecting channel 21 in the middle that communicates with the inner cavity of the furnace body 1. The upper end of the first mounting base 2 has a detachably connected second mounting base 3. The middle of the second mounting base 3 has a second connecting channel 31 that communicates with the first connecting channel 21. A sealing cover 311 is provided in the second connecting channel 31, and an intermediate layer 32 that can melt at a set temperature is provided between the sealing cover 311 and the second connecting channel 31. The inner wall of the second connecting channel 31 has a first limiting part 312, and the outer wall of the intermediate layer 32 has a first positioning part 321 that is adapted to the first limiting part 312. The inner wall of the intermediate layer 32 has a second limiting part 322, and the edge of the sealing cover 311 has a second positioning part 3111 that is adapted to the second limiting part 322.

[0039] Specifically, refer to Figure 1The first mounting base 2 has a circular disc-shaped structure, and several bolt holes 22 are evenly distributed on the upper end of the first mounting base 2. The second mounting base 3 is fixed to the first mounting base 2 by fastening bolts 33. The first mounting base 2 includes a circular disc-shaped body and several bolt holes 22 evenly distributed on the upper end. The circular disc-shaped structure facilitates installation and fixation. The even distribution of bolt holes 22 makes the subsequent connection with the second mounting base 3 more stable. Of course, the shape of the first mounting base 2 can also be designed as a square disc or other shapes according to actual needs. The bolt holes 22 can also be replaced by components with other connection methods such as slots. The second mounting base 3 is fixed to the first mounting base 2 by fastening bolts 33 passing through these bolt holes 22. This bolt 26 connection method has the advantages of convenient disassembly and reliable connection, which facilitates the later maintenance and repair of the device. The first limiting part 312 includes a limiting groove 313 provided on the inner wall of the second communicating channel 31. The limiting groove 313 is an annular groove arranged along the circumferential direction of the inner wall of the second connecting channel 31. Its function is to position and limit the intermediate layer 32. A positioning ring 211 is provided at the end of the second connecting channel 31 near the first connecting channel 21. The positioning ring 211 abuts against the outer wall of the intermediate layer 32. The positioning ring 211 can be a metal ring or a plastic ring. Its function is to further position and fix the intermediate layer 32 and prevent the intermediate layer 32 from shifting during installation or use.

[0040] Reference Figure 2The upper surface of the first mounting base 2 is provided with a first sealing groove 23, and a first sealing strip 231 is provided in the first sealing groove 23. The first sealing groove 23 is an annular groove surrounding the first connecting channel 21, and the first sealing strip 231 can be made of rubber elastic material. The rubber first sealing strip 231 has good sealing performance and elasticity, and can fill the gap between the first sealing groove 23 and the second mounting base 3 well, preventing gas leakage in the furnace body 1. Of course, the first sealing strip 231 can also be replaced by silicone or other sealing materials. The lower surface of the sealing cover 311 is provided with a second sealing groove 36, and a second sealing strip 361 is provided in the second sealing groove 36. The second sealing strip 361 is also made of rubber material, which further improves the sealing performance of the device. The outer wall of the intermediate layer 32 is provided with a first positioning part 321 that matches the first limiting part 312. When the intermediate layer 32 is installed in the second connecting channel 31, the first positioning part 321 is just inserted into the limiting groove 313, ensuring the accuracy of the installation position of the intermediate layer 32. The intermediate layer 32 is injected into the space between the sealing cap 311 and the second connecting channel 31 by adhesive injection, or it can be fixed between the sealing cap 311 and the second connecting channel 31 by welding. The first positioning part 321 can be a raised annular structure or a number of evenly distributed raised blocks. The second positioning part 3111 includes a positioning shoulder on the inner wall of the intermediate layer 32, and the inner diameter of the second connecting channel 31 closer to the first connecting channel 21 is larger than the inner diameter farther from the first connecting channel 21. This inner diameter design allows the positioning shoulder to better perform its limiting function. The edge of the sealing cap 311 is provided with a second positioning part 3111 that matches the second limiting part 322. When the sealing cap 311 is installed in the intermediate layer 32, the second positioning part 3111 cooperates with the positioning shoulder to ensure the installation stability of the sealing cap 311.

[0041] Reference Figure 3 A seal 35 is provided between the sealing cover 311 and the second mounting base 3 to prevent tampering. The seal 35 can be attached between the second mounting base 3 and the sealing cover 311 using tape or other adhesive tools. The seal 35 can be made of stainless steel wire or a fusible material. Once the seal 35 is damaged, it indicates that the device may have been tampered with, which facilitates timely detection and handling of the problem.

[0042] The implementation principle of this embodiment is as follows: The mechanical atmospheric explosion-proof device seals the furnace body 1 through the sealing cover 311 and the intermediate layer 32, ensuring the normal negative pressure operation of the furnace body 1. When the electronic protection device is damaged or the main controller's electronic protection fails, and the temperature inside the furnace body 1 continues to rise, the intermediate layer 32 reaches the set temperature and begins to melt. The sealing cover 311 loses its support and falls off, allowing the interior of the furnace body 1 to communicate with the external atmosphere, releasing the pressure and preventing the boiler from exploding due to excessive pressure.

[0043] Example 2

[0044] Refer to 4~ Figure 5 The difference between this embodiment and Embodiment 1 is that the outer wall of the first mounting base 2 has a T-shaped structure 24, and a clamp 25 for fixing the second mounting base 3 to the first mounting base 2 is provided on the outer wall of the first mounting base 2. The clamp 25 is fixed by bolts 26 and has a U-shaped structure 251. Its material is generally metal, such as carbon steel, which has sufficient strength to fix the first mounting base 2 and the second mounting base 3. The second mounting base 3 is provided with a protective net 34, which covers the sealing cover 311. The protective net 34 adopts a metal mesh structure. The bolts 26 on the second mounting base 3 are inserted into the mesh for fixing using the mesh structure of the protective net 34. When the sealing cover 311 falls off, the protective net 34 can effectively prevent the sealing cover 311 from splashing and causing injury to the staff.

[0045] The implementation principle of this embodiment is as follows: the first mounting base 2 and the second mounting base 3 are fixed by clamp 25, which simplifies the installation and disassembly process and improves work efficiency. When it is necessary to inspect or replace parts of the explosion-proof device, clamp 25 can be quickly opened, the operation completed, and then quickly fixed again, reducing equipment downtime. At the same time, the fixing method of clamp 25 can also ensure the connection reliability of the first mounting base 2 and the second mounting base 3, ensuring that the device can function normally when the temperature of the furnace body 1 rises abnormally, releasing the pressure inside the furnace body 1, preventing the boiler from exploding, and further improving the safety of boiler operation and the convenience of maintenance. Moreover, the protective net 34 is set to prevent injury to personnel after the sealing cover 311 falls off, enhancing the reliability and stability of the entire device, and greatly improving the safety performance of the vacuum boiler compared with the prior art.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this application.

Claims

1. A mechanical atmospheric venting explosion protection device, characterized in that: The system includes a first mounting base (2) fixed on the furnace body (1), a first connecting channel (21) connected to the inner cavity of the furnace body (1) in the middle of the first mounting base (2), a second mounting base (3) detachably connected to the upper end of the first mounting base (2), a second connecting channel (31) connected to the first connecting channel (21) in the middle of the second mounting base (3), a sealing cover (311) in the second connecting channel (31), and an intermediate layer (32) that can melt at a set temperature between the sealing cover (311) and the second connecting channel (31); a first limiting part (312) is provided on the inner wall of the second connecting channel (31), a first positioning part (321) adapted to the first limiting part (312) is provided on the outer wall of the intermediate layer (32); a second limiting part (322) is provided on the inner wall of the intermediate layer (32), and a second positioning part (3111) adapted to the second limiting part (322) is provided on the edge of the sealing cover (311).

2. A mechanical atmospheric venting device according to claim 1, characterized in that: The first mounting base (2) has a circular disc structure, and several bolt holes (22) are evenly distributed on the upper end of the first mounting base (2); the second mounting base (3) is fixed on the first mounting base (2) by fastening bolts (33).

3. A mechanical atmospheric venting device according to claim 1, characterized in that: The first mounting base (2) has a first sealing groove (23) on its upper end face, and a first sealing strip (231) is provided in the first sealing groove (23).

4. The mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: The first limiting part (312) includes a limiting groove (313) disposed on the inner wall of the second connecting channel (31).

5. A mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: The second positioning part (3111) includes a positioning shoulder on the inner wall of the intermediate layer (32), and the inner diameter of the second connecting channel (31) near the first connecting channel (21) is greater than the inner diameter away from the first connecting channel (21).

6. The mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: The outer wall of the first mounting base (2) is T-shaped (24). The mounting surface of the first mounting base (2) is provided with a clamp (25) for fixing the second mounting base (3) to the first mounting base (2). The clamp (25) is fixed by bolts (26). The clamp (25) is U-shaped (251).

7. A mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: The second connecting channel (31) is provided with a positioning ring (211) at the end near the first connecting channel (21), and the positioning ring (211) abuts against the outer wall of the intermediate layer (32).

8. A mechanical atmospheric ventilation explosion-proof device according to claim 7, characterized in that: The lower end face of the sealing cover (311) is provided with a second sealing groove (36), and a second sealing strip (361) is provided in the second sealing groove (36).

9. A mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: The second mounting base (3) is provided with a protective net (34), which covers the sealing cover (311).

10. A mechanical atmospheric ventilation explosion-proof device according to claim 1, characterized in that: A seal (35) for preventing human damage is provided between the sealing cap (311) and the second mounting base (3).

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