Explosion-proof high-pressure kettle with high sealing performance

Abstract

The utility model relates to the field of chemical containers, and discloses a high-sealing-performance anti-explosion high-pressure kettle which comprises a kettle body, a sealing cover and a stirring device, a gas gathering tank is arranged on one side of the kettle body, the top of the sealing cover is communicated with a gas discharging pipe and a gas inlet pipe, and a breather pipe is communicated between the gas discharging pipe and the gas gathering tank and between the gas inlet pipe and the gas gathering tank; an automatic air outlet assembly is arranged in the air leakage pipe and sequentially comprises a fixing base, an elastic piece connected to the bottom of the fixing base, a non-return ball connected to the bottom of the elastic piece and a plugging ring used for bearing the non-return ball from top to bottom, a plurality of vertical through holes are formed in the fixing base in a penetrating mode, and the non-return ball is matched with the plugging ring in an inserted mode. And an automatic air inlet assembly is correspondingly arranged in the air inlet pipe. The high-pressure kettle has the effect of improving the safety in the using process of the high-pressure kettle.

Description

Technical Field

[0001] This application relates to the field of chemical containers, and in particular to a high-sealing explosion-proof autoclave. Background Art

[0002] In existing technologies, autoclaves are key pieces of equipment commonly used in chemical, metallurgical, and oil refining fields. They are not only used in industrial settings but also extensively in laboratories, particularly in the laboratory research and development stages of pharmaceuticals, polymer synthesis, oil refining, and chemical engineering. Chemical reactions that cannot be completed under atmospheric pressure are typically tested for sealing using autoclaves. The stirring or heat transfer devices attached to autoclaves can improve the reaction efficiency within them.

[0003] Chinese patent CN202343161U discloses an explosion-proof autoclave, which includes an autoclave body and a stirring device installed in the autoclave body. The top of the autoclave body is provided with a sealing cover, and several float valves are installed on the sealing cover. An exhaust pipe is provided on the sealing cover, and a solenoid valve is provided on the exhaust pipe to control its on and off.

[0004] The aforementioned explosion-proof autoclave uses several float valves and exhaust pipes to release excessively high-pressure gases inside the autoclave. However, chemical reactions have complex and variable characteristics, and there is an occasional possibility of a decrease in gas pressure. When the aforementioned autoclave encounters a negative pressure situation, air can only be directly introduced into the autoclave to maintain the gas pressure balance inside the autoclave. However, this may cause unreacted chemical reactions inside the autoclave to stop, or even cause more serious safety problems. Utility Model Content

[0005] To improve the safety of high-pressure reactors during use, this application provides a high-sealing explosion-proof high-pressure reactor.

[0006] The high-sealing explosion-proof autoclave provided in this application adopts the following technical solution:

[0007] A high-sealing explosion-proof autoclave includes an autoclave body, a sealing cap, and a stirring device. A gas-gathering tank is provided on one side of the autoclave body. A vent pipe and an inlet pipe are connected to the top of the sealing cap. A vent pipe is connected to both the vent pipe and the inlet pipe and the gas-gathering tank. An automatic venting component is provided inside the vent pipe. The automatic venting component includes, from top to bottom, a fixed base, an elastic element connected to the bottom of the fixed base, a check ball connected to the bottom of the elastic element, and a sealing ring for receiving the check ball. Several vertical through holes are provided on the fixed base. The check ball and the sealing ring are inserted into each other. An automatic venting component is correspondingly provided inside the inlet pipe.

[0008] By adopting the above technical solution, during the use of the autoclave, the operator starts the stirring device to stir the mixture undergoing a chemical reaction inside the autoclave. During the exothermic chemical reaction, the gas level inside the autoclave increases. When the gas level reaches the maximum capacity of the autoclave, the excess gas pushes up the check valve ball through the sealing ring, then enters the vent pipe through the through-hole of the fixed seat, and is discharged into the gas collection tank for collection. During the endothermic chemical reaction, the gas level inside the autoclave decreases. When the gas level decreases to the point that it affects the stability of the autoclave, the gas collected in the gas collection tank will be released through the vent pipe into the autoclave via the automatic air intake component to regulate the pressure balance inside the autoclave and improve its stability. This application ensures that the gas inside the autoclave maintains a certain stability regardless of whether the chemical reaction is endothermic or exothermic, and prevents external air from entering the autoclave, stimulating or even destroying the reaction, thus preventing damage to the autoclave and threatening the operator's safety.

[0009] Optionally, the surface of the check ball is coated with a layer of polytetrafluoroethylene.

[0010] By adopting the above technical solution, the check ball needs to come into contact with the gases produced in the chemical reaction. It is prone to reacting with unknown chemical gases, leading to corrosion and affecting its sealing performance against the sealing ring. Applying polytetrafluoroethylene (PTFE) as an inert material to the exterior of check balls made of non-precious metals such as iron and copper ensures a certain level of stability while reducing the cost of using pure inert precious metals. This reduces the likelihood of corrosion during use.

[0011] Optionally, a sealing gasket is coaxially provided on the side wall where the sealing ring abuts against the check ball.

[0012] By adopting the above technical solution, the setting of the sealing gasket improves the tightness of the fit between the check ball and the sealing ring. In addition, when the check ball falls back onto the sealing ring due to the release of excessive gas pressure in the vessel, the rigid contact with the sealing ring is changed to a flexible contact, which can reduce the damage to the sealing ring when the check ball falls back onto the sealing ring.

[0013] Optionally, the gas-gathering tank is equipped with a second pressure gauge for real-time detection of the internal pressure of the gas-gathering tank.

[0014] By adopting the above technical solution, the second pressure gauge is sealed and inserted into the gas-gathering tank and connected to the gas-gathering tank. Through the second pressure gauge installed on the detection tube, the staff on the workshop site can observe the pressure changes in the gas-gathering tank at any time, and promptly discharge excess gas in the gas-gathering tank to reduce the possibility of explosion caused by excessive gas pressure in the gas-gathering tank.

[0015] Optionally, the gas collection tank is equipped with a buzzer alarm and a warning light, both of which are electrically connected to a second pressure gauge.

[0016] By adopting the above technical solution, when the gas in the gas collection tank reaches the preset threshold, the second pressure gauge will send an electrical signal to the buzzer and warning light, causing the buzzer to sound and the warning light to flash, providing visual and auditory warnings to the operator and prompting the operator to release the gas in the collection tank in a timely manner.

[0017] Optionally, the vessel body is provided with an anti-explosion component to reduce internal boiling.

[0018] By adopting the above technical solution, the explosion-proof component is made of porous, high-temperature resistant materials, such as zeolite, broken ceramic fragments, and porous ceramic plates. During heating, the chemical solvent inside the vessel may not boil due to a lack of sufficient bubbles. Even if the temperature reaches the boiling point, the porous material of the explosion-proof component can adsorb air and generate small bubbles upon heating. These bubbles play a crucial role in the boiling process, allowing the liquid to escape smoothly around the center of these bubbles, thereby preventing overheating or violent boiling. This reduces the possibility of explosion due to rapid changes in gas pressure inside the vessel and improves the stability of the vessel during use.

[0019] Optionally, the sealing cover is provided with a vent hole, and a rupture disc is detachably provided on the vent hole.

[0020] By adopting the above technical solution, when the pressure inside the autoclave suddenly and rapidly increases, the rupture disc automatically breaks, quickly reducing the pressure inside the autoclave, thereby reducing the possibility of autoclave explosion, improving operator safety, and after the rupture disc breaks, a new rupture disc can be replaced, thus extending the service life of the autoclave.

[0021] Optionally, a buffer heat insulation sleeve is fitted on the outer wall of the vessel.

[0022] By adopting the above technical solution, since high pressure vessels are generally used in factories at room temperature, some chemical reactions need to be carried out under conditions below room temperature. The increase in temperature intensifies the reaction and increases the gas pressure in the vessel. The setting of the buffer insulation jacket can reduce the influence of the external environment on the temperature inside the vessel, and can also reduce the possibility of direct contact between the vessel and external objects. When the vessel is subjected to external impact, the buffer layer can play a buffering role, thereby protecting the vessel.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During the use of the autoclave, the operator activates the stirring device to agitate the mixture undergoing a chemical reaction inside the autoclave. During the exothermic reaction, the gas level inside the autoclave increases. When the gas level reaches the maximum capacity of the autoclave, the excess gas pushes up the check valve ball through the sealing ring, then enters the vent pipe through the through-hole of the fixed base, and is discharged into the gas collection tank for collection. During the endothermic reaction, the gas level inside the autoclave decreases. When the gas level decreases to the point of affecting the stability of the autoclave, the gas collected in the gas collection tank is channeled through the vent pipe into the autoclave via the automatic air intake component to regulate the pressure balance inside the autoclave and improve its stability. This application ensures that the gas inside the autoclave maintains a certain stability regardless of whether the chemical reaction is endothermic or exothermic, and prevents external air from entering the autoclave, stimulating or even destroying the reaction, thus preventing damage to the autoclave and threatening the operator's safety.

[0025] 2. Check valve balls need to come into contact with gases produced in chemical reactions and are prone to reacting with unknown chemical gases, leading to corrosion and affecting their sealing performance against the sealing ring. Applying polytetrafluoroethylene (PTFE) as an inert coating to the exterior of check valve balls made of non-precious metals such as iron and copper ensures a certain level of stability while reducing the cost of using pure inert precious metals. This also reduces the likelihood of corrosion during use.

[0026] 3. The sealing gasket improves the tightness of the fit between the check ball and the sealing ring. It also changes the rigid contact of the check ball with the sealing ring to a flexible contact when it falls back onto the sealing ring after the high pressure inside the vessel is released. This reduces the damage to the sealing ring when the check ball falls back onto the sealing ring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view illustrating the internal structure in the embodiments of this application.

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Kettle body; 11. Buffer insulation sleeve; 12. Connecting column; 13. Abutment ring; 2. Sealing cover; 21. Vent pipe; 22. Inlet pipe; 23. Exhaust port; 231. Rupture disc; 24. First pressure gauge; 3. Stirring device; 31. Drive motor; 32. Stirring shaft; 33. Stirring blades; 4. Gas collection tank; 41. Second pressure gauge; 42. Buzzer alarm; 43. Warning light; 44. Vent pipe; 441. Solenoid valve; 5. Vent pipe; 6. Automatic venting assembly; 61. Fixing base; 611. Through hole; 62. Elastic element; 63. Check ball; 64. Sealing ring; 641. Sealing gasket; 7. Automatic air intake assembly; 8. Explosion-proof component. DETAILED DESCRIPTION

[0032] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0033] This application discloses a high-sealing explosion-proof autoclave.

[0034] Reference Figure 1 and Figure 2 A high-sealing explosion-proof autoclave includes an autoclave body 1, a sealing cap 2, and a stirring device 3. A buffer insulation sleeve 11 is fixedly fitted onto the outer wall of the autoclave body 1. A gas-gathering tank 4 is provided on one side of the autoclave body 1, and a connecting column 12 is fixedly connected between the gas-gathering tank 4 and the side wall of the autoclave body 1. The sealing cap 2 is sealed and installed on the top of the autoclave body 1 by bolts and flanges, and a vent pipe 21 and an inlet pipe 22 are fixedly connected to the top of the sealing cap 2. A vent pipe 5 is installed between the vent pipe 21 and the inlet pipe 22 and the gas-gathering tank 4. An automatic venting component 6 is provided in the vent pipe 21, and an automatic inlet component 7 is provided in the inlet pipe 22.

[0035] Reference Figure 1 and Figure 2 During the use of the autoclave, the operator starts the stirring device 3 to stir the mixture undergoing chemical reaction in the autoclave 1. During the exothermic chemical reaction, the gas in the autoclave 1 increases. When the gas in the autoclave 1 reaches the maximum amount of gas that the autoclave 1 can hold, the gas in the autoclave enters the gas collection tank 4 through the automatic gas outlet component 6 to relieve the pressure inside the autoclave 1. During the endothermic chemical reaction, the gas in the autoclave 1 decreases. When the gas in the autoclave 1 decreases to the point that it affects the stability of the autoclave 1, the gas collected in the gas collection tank 4 will be passed through the automatic gas inlet component 7 from the vent pipe 5 to the inside of the autoclave 1 to pressurize the inside of the autoclave 1.

[0036] Reference Figure 2The stirring device 3 includes a drive motor 31, a stirring shaft 32, and stirring blades 33. The drive motor 31 is installed on the top of the sealing cover 2, and the output shaft of the drive motor 31 rotates vertically through the sealing cover 2 and is coaxially and fixedly connected with the stirring shaft 32. The stirring shaft 32 is located inside the vessel body 1, and the stirring blades 33 are fixedly sleeved on the end of the stirring shaft 32 away from the sealing cover 2. During the use of the high-pressure vessel, the drive motor 31 is started, which drives the stirring shaft 32 and the stirring blades 33 to rotate synchronously, thereby completing the process of stirring chemical raw materials in the vessel body 1, which is beneficial to promoting the full reaction of the raw materials.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The automatic venting assembly 6 includes a fixed base 61, an elastic element 62, a check ball 63, and a sealing ring 64. The fixed base 61 is coaxially fixed on the inner top wall of the vent pipe 21, and the fixed base 61 has several vertical through holes 611. In this embodiment, the elastic element 62 is a high-strength spring, which is arranged vertically. The top end is fixedly set on the bottom of the fixed base 61, and the bottom end is fixedly sleeved on the check ball 63. The sealing ring 64 is integrally formed on the inner bottom wall of the vent pipe 21, and a sealing gasket 641 is coaxially fixed on the inner ring wall of the sealing ring 64. The surface of the check ball 63 is coated with a layer of polytetrafluoroethylene, and the bottom of the check ball 63 abuts against the sealing gasket 641 and fits tightly with the sealing gasket 641.

[0038] Reference Figure 1 and Figure 2 The automatic air intake component 7 is located inside the air intake pipe 22. Its installation method is the same as that of the automatic air outlet component 6, but the installation order is reversed. It only serves the function of air intake relative to the vessel body 1.

[0039] Reference Figure 2 To reduce the sudden impact of the chemical reaction inside the reactor on the reactor body 1, an anti-blowout component 8 is installed inside the reactor body 1 to reduce boiling over. The anti-blowout component 8 can be zeolite, broken ceramic pieces, or a ceramic porous plate. In this embodiment, a ceramic porous plate is used as an example. The ceramic porous plate is rotatably sleeved on the stirring shaft 32 and located near the bottom wall of the reactor body 1. An abutment ring 13 is coaxially fixed on the inner side wall of the reactor body 1 above the stirring blade 33. The ceramic porous plate is installed on the abutment ring 13 by special bolts.

[0040] Reference Figure 1 To enhance the safety of the vessel body 1, an exhaust port 23 is fixedly provided on the sealing cover 2, and a rupture disc 231 is installed on the exhaust port 23 by bolts and flanges.

[0041] Reference Figure 1A first pressure gauge 24 is fixedly inserted into the top of the sealing cap 2, and a second pressure gauge 41 is fixedly inserted into the top of the gas-gathering tank 4. A buzzer alarm 42 and a warning light 43 are also fixedly installed on the top of the gas-gathering tank 4, and both the buzzer alarm 42 and the warning light 43 are electrically connected to the second pressure gauge 41. This facilitates workshop personnel in understanding the pressure status in the vessel body 1 and the gas-gathering tank 4.

[0042] Reference Figure 1 A vent pipe 44 is fixedly connected to the side wall of the gas-gathering tank 4. A solenoid valve 441 is installed on the vent pipe 44 and is electrically connected to a second pressure gauge 41. Beforehand, workshop personnel set a threshold in the second pressure gauge 41. When the pressure in the gas-gathering tank 4 exceeds the threshold, the second pressure gauge 41 will send an electrical signal to the solenoid valve 441. The solenoid valve 441 will open the vent pipe 44, and the gas in the gas-gathering tank 4 will be discharged into the external environment recovery device through the vent pipe 44, thereby reducing the gas pressure in the gas-gathering tank 4 and preventing an explosion.

[0043] The implementation principle of a high-sealing explosion-proof autoclave according to an embodiment of this application is as follows: During the use of the autoclave, the operator starts the drive motor 31, which drives the stirring shaft 32 and the stirring blades 33 to rotate synchronously, thereby completing the process of stirring chemical raw materials in the autoclave body 1. During the exothermic chemical reaction, the gas in the autoclave body 1 increases. When the gas in the autoclave body 1 reaches the maximum amount of gas that the autoclave body 1 can hold, the gas in the autoclave body pushes the check ball 63 through the sealing ring 64, and then enters the vent pipe 5 through the through hole 61 of the fixed seat 61, and is discharged into the gas collection tank 4 through the vent pipe 5 to achieve depressurization of the inside of the autoclave body 1. During the endothermic chemical reaction, the gas in the autoclave body 1 decreases. When the gas in the autoclave body 1 decreases to the point that it affects the stability of the autoclave body 1, the gas collected in the gas collection tank 4 will pass through the vent pipe 5 and push the check ball 63 away from the sealing ring 64, and pass through the sealing ring 64 into the inside of the autoclave body 1 to achieve pressurization of the inside of the autoclave body 1.

[0044] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-sealing explosion-proof autoclave, comprising an autoclave body (1), a sealing cover (2), and a stirring device (3), characterized in that, A gas-gathering tank (4) is provided on one side of the vessel body (1). A vent pipe (21) and an inlet pipe (22) are connected to the top of the sealing cover (2). A vent pipe (5) is connected between the vent pipe (21) and the inlet pipe (22) and the gas-gathering tank (4). An automatic gas-discharging component (6) is provided inside the vent pipe (21). The automatic gas-discharging component (6) includes, from top to bottom, a fixed base (61), an elastic element (62) connected to the bottom of the fixed base (61), a check ball (63) connected to the bottom of the elastic element (62), and a sealing ring (64) for receiving the check ball (63). Several vertical through holes (611) are provided on the fixed base (61). The check ball (63) and the sealing ring (64) are inserted and matched. An automatic gas-inlet component (7) is correspondingly provided inside the inlet pipe (22).

2. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, The surface of the anti-reverse ball (63) is coated with a layer of polytetrafluoroethylene.

3. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, A sealing gasket (641) is coaxially provided on the side wall where the sealing ring (64) abuts against the anti-reverse ball (63).

4. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, The gas-gathering tank (4) is equipped with a second pressure gauge (41) for real-time detection of the internal pressure of the gas-gathering tank (4).

5. The high-sealing explosion-proof autoclave according to claim 4, characterized in that, The gas collection tank (4) is equipped with a buzzer alarm (42) and a warning light (43), both of which are electrically connected to the second pressure gauge (41).

6. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, The vessel body (1) is equipped with an anti-explosion component (8) to reduce boiling inside the vessel.

7. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, The sealing cover (2) is provided with an exhaust hole (23), and a rupture disc (231) is detachably provided on the exhaust hole (23).

8. The high-sealing explosion-proof autoclave according to claim 1, characterized in that, A buffer heat insulation sleeve (11) is fitted on the outer wall of the vessel body (1).

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