A liquid overcharge safety venting device

Abstract

The application relates to the technical field of low-temperature liquid safety discharge, in particular to a liquid overload safety discharge device, which comprises a water bath box, a gasifier, a spraying frame assembly, a low-temperature-resistant liquid inlet pipe assembly and a high-altitude exhaust pipe. The gasifier is arranged in the interior of the water bath box, and the spraying frame assembly is installed on the outer wall of the water bath box. The low-temperature-resistant liquid inlet pipe assembly comprises a liquid inlet pipe head, a flow guide pipe, a corrugated pressure-resistant pipe and a liquid inlet head. The top end of the high-altitude exhaust pipe is provided with a high-altitude exhaust assembly, and the high-altitude exhaust assembly comprises a conical cover, an exhaust cover and a gas distribution pipe. The spraying frame assembly can accelerate the gasification of liquid oxygen, and can also quickly remove the frost layer on the gasifier, thereby improving the gasification efficiency. The low-temperature-resistant liquid inlet pipe assembly can prevent the explosion accident caused by excessive pressure of the pipeline, and further improves the safety during the liquid pressure overload discharge. The high-altitude exhaust assembly can prevent oxygen enrichment, and further improves the safety.

Description

Technical Field

[0001] This invention relates to the field of cryogenic liquid safety discharge technology, specifically to a device for safe discharge of liquid overload. Background Technology

[0002] During storage and transportation, cryogenic liquids such as liquid oxygen and liquid nitrogen often experience a rapid increase in internal pressure due to factors such as rising ambient temperature, heated tanks, or overfilling, posing safety hazards such as explosions and leaks. To address these risks, the industry commonly employs safety venting devices to drain and safely dispose of overpressurized liquids.

[0003] Traditional liquid oxygen safety discharge devices mostly use a single water bath heating vaporization method, which has the following drawbacks: First, relying solely on water bath heating limits the heat exchange area between the low-temperature liquid and water, and the vaporizer surface is prone to frost formation, forming an insulation layer that further reduces heat exchange efficiency, easily leading to incomplete liquid vaporization. Direct discharge of unvaporized liquid poses a safety risk. Second, traditional devices cannot automatically adjust the inlet flow rate according to the vaporization state and lack an effective pipeline overpressure protection structure. When the internal pressure of the vaporizer rises suddenly, liquid backflow or pipeline rupture is likely to occur. In addition, traditional devices mostly emit near the ground, and the emitted oxygen tends to accumulate in local areas, creating an oxygen-rich environment that poses a fire and explosion hazard. Furthermore, the emitted gas has poor diffusion and cannot be diluted quickly.

[0004] Therefore, there is a need for a liquid overload safety discharge device with high gasification efficiency, automatic flow regulation and overpressure protection, and strong discharge safety to solve the problems existing in the current technology. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device for safe discharge of liquids in case of overload, which features rapid defrosting, adjustable liquid oxygen flow rate, and prevention of oxygen enrichment to improve safety during use, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for safe discharge of liquid overload, comprising a water bath, a vaporizer, a spray frame assembly, a low-temperature resistant liquid inlet pipe assembly, and a high-altitude exhaust pipe. The vaporizer is disposed inside the water bath, the spray frame assembly is installed on the outer wall of the water bath, the vaporizer is provided with a liquid inlet pipe and an exhaust pipe, the low-temperature resistant liquid inlet pipe assembly is connected to the liquid inlet pipe of the vaporizer, and the high-altitude exhaust pipe is connected to the exhaust pipe of the vaporizer. The spray frame assembly includes a drain pipe, a side support, and a diversion pipe frame, which is positioned directly above the gasifier; The vaporizer includes an external support, an evaporator tube, and heat exchange fins. The liquid inlet pipe is connected to one end of the evaporator tube, and the exhaust pipe is connected to the other end of the evaporator tube. The cryogenic liquid inlet pipe assembly includes an inlet pipe head, a guide pipe, a corrugated pressure-resistant pipe, and an inlet head; The top of the high-altitude exhaust pipe is equipped with a high-altitude exhaust assembly, which includes a conical hood, an exhaust hood, and a distribution pipe. The bottom of the water bath is equipped with a bottom bracket.

[0007] Preferably, an electric heater is installed at the bottom of the water bath, and a heating pipe is installed on the inner bottom wall of the water bath, which is connected to the electric heater.

[0008] Preferably, the vaporizer is located in the middle of the water bath, the bottom of the external support is provided with support legs, the liquid inlet pipe and the exhaust pipe are respectively located at the bottom two ends of the external support, the evaporation tube is S-shaped, the heat exchange fins are installed on the outer wall of the evaporation tube, and the heat exchange fins on adjacent evaporation tubes are provided with connecting buckles.

[0009] Preferably, internal water pumps are installed on both sides of the inner bottom wall of the water bath, and waterproof covers are installed on the outside of the internal water pumps. The drain end of the internal water pump is connected to the bottom end of the drain pipe, which is located outside the water bath. Movable pipe clamps are installed on the outer wall of the water bath, and the drain pipe is located inside the movable pipe clamps.

[0010] Preferably, two sets of side supports are provided, symmetrically installed on the top of the outer wall of the water bath tank, and the diversion pipe rack is installed between the tops of the two side supports. The diversion pipe rack consists of a main water pipe and multiple diversion water pipes, and multiple nozzles are linearly arrayed at the bottom of the diversion water pipes.

[0011] Preferably, a baffle plate is provided on the inner wall of the tail end of the inlet pipe head. The baffle plate is composed of two baffle plates arranged alternately. The guide pipe is connected to the tail end of the inlet pipe head through a flange. The inside of the guide pipe is arranged in a narrow tube shape. A retaining spring groove is opened at the bottom end of the guide pipe. A retaining spring is installed inside the retaining spring groove. The top of the retaining spring abuts against a movable plug. A conical groove is opened at the bottom of the movable plug. A drain port distributed in a circumferential array is opened on the bottom surface of the movable plug.

[0012] Preferably, the corrugated pressure-resistant pipe is double-layered, with the top of the corrugated pressure-resistant pipe connected to the bottom of the guide pipe, one end of the liquid inlet head connected to the bottom of the corrugated pressure-resistant pipe, and the other end connected to the liquid inlet pipe of the vaporizer. A pressure-holding layer is provided on the liquid inlet head, and a first fixed sleeve is provided on the outside of the guide pipe. The end of the first fixed sleeve is installed on the outer wall of the water bath.

[0013] Preferably, one end of the high-altitude exhaust pipe is connected to the exhaust pipe of the vaporizer. Multiple second fixed sleeves are provided on the outer wall of the high-altitude exhaust pipe. The ends of the second fixed sleeves are installed on the outer wall of the water bath. A conical shroud is installed at the top of the high-altitude exhaust pipe. An exhaust shroud is installed at the top of the conical shroud. A blade support is installed on the inner wall of the conical shroud. A central rotating shaft is rotatably connected at the center of the blade support. Turbine blades are installed at the bottom of the central rotating shaft. The top of the central rotating shaft passes through the exhaust shroud. Fan blades are provided on the outer wall of the top of the central rotating shaft.

[0014] Preferably, the air distribution pipes are arranged in a circumferential array on the outer wall of the exhaust hood, and the end of the air distribution pipe is provided with an end exhaust port, which is provided with several exhaust holes. A diversion nozzle is provided on the outer wall of the air distribution pipe, and the diversion nozzle is located below the fan blade.

[0015] Beneficial effects Compared with the prior art, the present invention provides a device for safe discharge of liquid overload, which has the following beneficial effects: 1. The liquid overload safety discharge device, through the setting of the spray rack assembly, compared with the traditional water bath heating, adopts a water bath plus spray method, which can not only accelerate the vaporization of liquid oxygen, but also quickly remove the frost layer on the vaporizer, prevent the problem of incomplete vaporization, improve vaporization efficiency, and thus improve emission safety.

[0016] 2. This device for safe discharge of liquid overload uses a low-temperature resistant inlet pipe assembly, along with baffles and movable plugs, to automatically regulate the flow of liquid oxygen into the vaporizer. When the vaporizer is overpressurized, the movable plug automatically cuts off the supply of liquid oxygen. Furthermore, the corrugated pressure-resistant pipe and the pressure-insulating layer outside the inlet head prevent excessive pressure on the pipeline from causing an explosion, further improving the safety of hydraulic overload discharge.

[0017] 3. This device for safe discharge of liquid overload can divert oxygen to the high altitude for release by setting up a high-altitude exhaust component, away from the ground. In addition, the setting of fan blades and air distribution pipes can expand the oxygen dispersion range, prevent oxygen accumulation, and further improve safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the water bath structure of the present invention; Figure 3 This is a schematic diagram of the vaporizer structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the low-temperature liquid inlet pipe assembly of the present invention; Figure 5This is a partially enlarged schematic diagram of the low-temperature resistant liquid inlet pipe of the present invention; Figure 6 This is an overall schematic diagram of the high-altitude exhaust assembly of the present invention; Figure 7 This is a schematic diagram of the internal structure of the high-altitude exhaust assembly of the present invention.

[0019] In the diagram: 1. Water bath; 11. Heating tube; 2. Vaporizer; 21. External support; 22. Liquid inlet pipe; 23. Exhaust pipe; 24. Evaporator; 25. Heat exchange fins; 26. Connecting clips; 3. Spray rack assembly; 31. Waterproof cover; 32. Drain pipe; 33. Side support; 34. Diverter pipe rack; 35. Spray nozzle; 4. Low-temperature resistant liquid inlet pipe assembly; 41. Liquid inlet pipe head; 411. Baffle plate; 42. Guide pipe; 42 1. Snap ring groove; 422. Snap ring; 423. Movable plug; 424. Drain port; 43. Corrugated pressure-resistant pipe; 44. Inlet head; 45. First fixed sleeve; 5. High-altitude exhaust pipe; 51. Conical cover; 52. Turbine blade; 53. Blade support; 55. Central shaft; 56. Fan blade; 57. Exhaust hood; 58. Air distribution pipe; 581. End exhaust port; 582. Flow splitter nozzle; 59. Second fixed sleeve; 6. Bottom bracket. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 For one embodiment of the present invention, please refer to [link / reference]. Figures 1 to 3 A device for safe discharge of liquid overload includes a water bath 1, a vaporizer 2, a spray frame assembly 3, a low-temperature resistant liquid inlet pipe assembly 4, and a high-altitude exhaust pipe 5. The vaporizer 2 is located inside the water bath 1, the spray frame assembly 3 is installed on the outer wall of the water bath 1, the vaporizer 2 is provided with a liquid inlet pipe 22 and an exhaust pipe 23, the low-temperature resistant liquid inlet pipe assembly 4 is connected to the liquid inlet pipe 22 of the vaporizer 2, the high-altitude exhaust pipe 5 is connected to the exhaust pipe 23 of the vaporizer 2, an electric heater is provided at the bottom of the water bath 1, a heating pipe 11 is installed on the inner bottom wall of the water bath 1 and connected to the electric heater, and a bottom bracket 6 is provided at the bottom of the water bath 1.

[0022] The vaporizer 2 includes an external support 21, an evaporator tube 24, and heat exchange fins 25. The liquid inlet pipe 22 is connected to one end of the evaporator tube 24, and the exhaust pipe 23 is connected to the other end of the evaporator tube 24. The vaporizer 2 is located in the middle of the water bath 1. The bottom of the external support 21 is provided with support legs. The liquid inlet pipe 22 and the exhaust pipe 23 are respectively located at the bottom ends of the external support 21. The evaporator tube 24 is S-shaped. The heat exchange fins 25 are installed on the outer wall of the evaporator tube 24. Connecting clips 26 are provided between the heat exchange fins 25 on adjacent evaporator tubes 24.

[0023] The spray frame assembly 3 includes a drain pipe 32, a side support 33, and a diversion pipe frame 34. The diversion pipe frame 34 is located directly above the gasifier 2. Internal water pumps are installed on both sides of the inner bottom wall of the water bath 1. Waterproof covers 31 are installed outside the internal water pumps. The drain end of the internal water pump is connected to the bottom end of the drain pipe 32. The drain pipe 32 is located outside the water bath 1. Movable pipe clamps are installed on the outer wall of the water bath 1. The drain pipe 32 is located inside the movable pipe clamps.

[0024] Two sets of side supports 33 are symmetrically installed on the top of the outer wall of the water bath tank 1. The diversion pipe support 34 is installed between the tops of the two side supports 33. The diversion pipe support 34 consists of a main water pipe and multiple diversion water pipes. Multiple nozzles 35 are linearly arrayed at the bottom of the diversion water pipes.

[0025] Specifically, when liquid oxygen is overloaded, the overloaded portion needs to be discharged and then vaporized before it can be safely released into the air. During the vaporization process, a pump is used to extract the overloaded liquid oxygen and then introduce it into vaporizer 2. Since vaporizer 2 is located inside water bath 1, when liquid oxygen enters evaporator 24 from the liquid inlet pipe 22 of vaporizer 2, it undergoes rapid heat exchange through evaporator 24 and heat exchange fins 25 to vaporize it. Then, the vaporized oxygen is discharged from the exhaust pipe 23 of vaporizer 2.

[0026] In addition, an electric heater is installed at the bottom of the water bath 1, and a heating pipe 11 is installed on the inner bottom wall of the water bath 1. The heating pipe 11 is connected to the electric heater. The water bath 1 can be filled with warm water, and the water temperature is maintained by the electric heater and the heating pipe 11, so as to provide a stable water bath heating environment for the vaporizer 2 and ensure the vaporization efficiency of liquid oxygen.

[0027] In addition, the vaporizer 2 is located in the middle of the water bath 1, and the bottom of the external support 21 is provided with support legs. The liquid inlet pipe 22 and the exhaust pipe 23 are respectively located at the bottom ends of the external support 21. The evaporation tube 24 is arranged in an S-shape, and the heat exchange fins 25 are installed on the outer wall of the evaporation tube 24. Connecting buckles 26 are provided between the heat exchange fins 25 on adjacent evaporation tubes 24. The S-shaped evaporation tube 24 can extend the flow path of the low temperature liquid, and the heat exchange fins 25 can greatly increase the heat exchange area. The connecting buckles 26 can fix adjacent heat exchange fins 25 into a whole, improving the stability and heat exchange uniformity of the heat exchange structure.

[0028] During the gasification process, due to the low temperature of liquid oxygen, frost will form on the evaporator tube 24 and heat exchange fins 25 of the gasifier 2, affecting the gasification efficiency. Therefore, defrosting is required. During defrosting, the internal water pump can transport water from the water bath 1 to the distribution pipe rack 34 through the drain pipe 32. The waterproof cover 31 can prevent the internal water pump from being damaged by moisture, and the movable pipe clamp can fix the drain pipe 32 to prevent it from shaking. The side bracket 33 provides stable support for the distribution pipe rack 34, and the nozzle 35 can spray water evenly on the surface of the gasifier 2 to quickly remove the frost and improve the gasification efficiency.

[0029] Example 2 As one embodiment of the present invention, please refer to Figure 4 and Figure 5 Based on Embodiment 1, this application further includes a cryogenic liquid inlet pipe assembly 4 comprising a liquid inlet pipe head 41, a guide pipe 42, a corrugated pressure-resistant pipe 43, and a liquid inlet head 44; A baffle plate 411 is provided on the inner wall of the tail end of the liquid inlet pipe head 41. The baffle plate 411 is composed of two baffle plates arranged alternately. The guide pipe 42 is connected to the tail end of the liquid inlet pipe head 41 through a flange. The inside of the guide pipe 42 is arranged in a narrow tube shape. A snap ring groove 421 is provided at the bottom end of the guide pipe 42. A snap ring 422 is provided inside the snap ring groove 421. The top of the snap ring 422 abuts against a movable plug 423. A conical groove is provided at the bottom of the movable plug 423. A drain port 424 distributed in a circumferential array is provided on the bottom surface of the movable plug 423.

[0030] The corrugated pressure-resistant pipe 43 is double-layered. The top of the corrugated pressure-resistant pipe 43 is connected to the bottom of the guide pipe 42. One end of the liquid inlet head 44 is connected to the bottom of the corrugated pressure-resistant pipe 43, and the other end is connected to the liquid inlet pipe 22 of the vaporizer 2. A pressure-holding layer is provided on the liquid inlet head 44. A first fixed sleeve 45 is provided on the outside of the guide pipe 42. The end of the first fixed sleeve 45 is installed on the outer wall of the water bath tank 1.

[0031] Specifically, to prevent excessive liquid intake from causing pipeline explosion and gas pressure from driving liquid oxygen backflow, this application includes a baffle plate 411, which can initially limit the flow of liquid oxygen entering the guide pipe 42. The narrow tube-shaped guide pipe 42 can further limit the liquid oxygen flow rate, and the drain port 424 at the bottom of the movable plug 423 can quantitatively discharge liquid oxygen. In addition, when the vaporizer 2 is overpressurized, the pressure will push the movable plug 423 upward, so that the edge of the movable plug 423 abuts against the inner wall of the guide pipe 42, cutting off the liquid supply and preventing overpressure backflow.

[0032] Furthermore, the double-layer corrugated pressure-resistant pipe 43 has excellent pressure resistance performance and can buffer pressure fluctuations in the pipeline. The pressure-holding layer of the liquid inlet head 44 can further enhance the explosion resistance of the pipeline. The first fixed pipe sleeve 45 can fix the guide pipe 42 to prevent the pipeline from shaking under force.

[0033] Example 3 As one embodiment of the present invention, please refer to Figure 6 and Figure 7 The high-altitude exhaust pipe 5 is equipped with a high-altitude exhaust assembly at its top end. The high-altitude exhaust assembly includes a conical shroud 51, an exhaust shroud 57, and a gas distribution pipe 58. One end of the high-altitude exhaust pipe 5 is connected to the exhaust pipe 23 of the vaporizer 2. Multiple second fixed sleeves 59 are provided on the outer wall of the high-altitude exhaust pipe 5. The ends of the second fixed sleeves 59 are installed on the outer wall of the water bath tank 1. The conical shroud 51 is installed at the top end of the high-altitude exhaust pipe 5. The exhaust shroud 57 is installed at the top end of the conical shroud 51. A blade support 53 is installed on the inner wall of the conical shroud 51. A central rotating shaft 55 is rotatably connected at the center of the blade support 53. A turbine blade 52 is installed at the bottom of the central rotating shaft 55. The top of the central rotating shaft 55 passes through the exhaust shroud 57. A fan blade 56 is provided on the outer wall of the top of the central rotating shaft 55. The air distribution pipes 58 are arranged in a circumferential array on the outer wall of the exhaust hood 57. The end of the air distribution pipe 58 is provided with an end exhaust port 581, and the end exhaust port 581 is provided with several exhaust holes. The outer wall of the air distribution pipe 58 is provided with a diversion nozzle 582, which is located below the fan blade 56.

[0034] Specifically, during the exhaust process, since traditional vaporizers generally use direct discharge, oxygen enrichment is easily generated. Therefore, this application sets up an elevated exhaust pipe 5 at the exhaust pipe 23 of the vaporizer 2 to discharge oxygen to a higher position, preventing oxygen enrichment in low-lying areas and thus improving safety. In addition, it avoids oxygen enrichment in a single place. Furthermore, an elevated exhaust component is set up so that when oxygen enters the conical hood 51 through the elevated exhaust pipe 5, the oxygen flow rate is reduced. When oxygen is discharged from the exhaust hood 57, it is dispersed through multiple gas distribution pipes 58. It can also be further dispersed through the end exhaust port 581 on the gas distribution pipe 58 and multiple diversion nozzles 582, thereby reducing oxygen enrichment.

[0035] In addition, as oxygen enters the exhaust hood 57, it first passes through the turbine blades 52, which in turn drives the turbine blades 52 to rotate. The rotation of the turbine blades 52 then drives the fan blades 56 to rotate slowly through the central shaft 55. The oxygen sprayed from the split nozzles 582 on the split pipe 58 below the fan blades 56 is guided by the fan blades 56 to the top of the fan blades 56, thereby further increasing the oxygen dispersion speed and dispersion range, and further improving the safety of emissions.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for safe discharge of liquid overload, comprising a water bath (1), a vaporizer (2), a spray frame assembly (3), a low-temperature resistant liquid inlet pipe assembly (4), and a high-altitude exhaust pipe (5), characterized in that: The vaporizer (2) is installed inside the water bath (1), the spray frame assembly (3) is installed on the outer wall of the water bath (1), the vaporizer (2) is provided with a liquid inlet pipe (22) and an exhaust pipe (23), the low temperature liquid inlet pipe assembly (4) is connected to the liquid inlet pipe (22) of the vaporizer (2), and the high-altitude exhaust pipe (5) is connected to the exhaust pipe (23) of the vaporizer (2); The spray frame assembly (3) includes a drain pipe (32), a side bracket (33), and a diversion pipe bracket (34), which is located directly above the gasifier (2); The vaporizer (2) includes an external support (21), an evaporator (24) and heat exchange fins (25). The liquid inlet pipe (22) is connected to one end of the evaporator (24), and the exhaust pipe (23) is connected to the other end of the evaporator (24). The cryogenic liquid inlet pipe assembly (4) includes a liquid inlet pipe head (41), a guide pipe (42), a corrugated pressure-resistant pipe (43), and a liquid inlet head (44). The top of the high-altitude exhaust pipe (5) is provided with a high-altitude exhaust assembly, which includes a cone hood (51), an exhaust hood (57), and a distribution pipe (58). The bottom of the water bath (1) is provided with a bottom bracket (6).

2. A device for safe discharge of liquid overload according to claim 1, characterized in that: An electric heater is installed at the bottom of the water bath (1), and a heating pipe (11) is installed on the inner bottom wall of the water bath (1). The heating pipe (11) is connected to the electric heater.

3. A device for safe discharge of liquid overload according to claim 1, characterized in that: The vaporizer (2) is located in the middle of the water bath (1). The bottom of the external support (21) is provided with support legs. The liquid inlet pipe (22) and the exhaust pipe (23) are respectively located at the bottom ends of the external support (21). The evaporation tube (24) is arranged in an S-shape. The heat exchange fins (25) are installed on the outer wall of the evaporation tube (24). The heat exchange fins (25) on adjacent evaporation tubes (24) are provided with connecting buckles (26).

4. A device for safe discharge of liquid overload according to claim 1, characterized in that: An internal water pump is installed on both sides of the inner bottom wall of the water bath (1). A waterproof cover (31) is installed on the outside of the internal water pump. The drain end of the internal water pump is connected to the bottom end of the drain pipe (32). The drain pipe (32) is installed on the outside of the water bath (1). A movable pipe clamp is installed on the outer wall of the water bath (1). The drain pipe (32) is installed inside the movable pipe clamp.

5. A device for safe discharge of liquid overload according to claim 1, characterized in that: Two sets of side supports (33) are symmetrically installed on the top of the outer wall of the water bath (1). The diversion pipe rack (34) is installed between the tops of the two side supports (33). The diversion pipe rack (34) consists of a main water pipe and multiple diversion water pipes. Multiple nozzles (35) are linearly arrayed at the bottom of the diversion water pipes.

6. A device for safe discharge of liquid overload according to claim 1, characterized in that: A baffle plate (411) is provided on the inner wall of the tail end of the liquid inlet head (41). The baffle plate (411) is composed of two baffle plates arranged alternately. The guide pipe (42) is connected to the tail end of the liquid inlet head (41) through a flange. The inside of the guide pipe (42) is arranged in a narrow tube shape. A snap ring groove (421) is provided at the bottom end of the guide pipe (42). A snap ring (422) is provided inside the snap ring groove (421). The top of the snap ring (422) abuts against a movable plug (423). A conical groove is provided at the bottom of the movable plug (423). A drain port (424) is provided on the bottom surface of the movable plug (423) in a circumferential array.

7. A device for safe discharge of liquid overload according to claim 6, characterized in that: The corrugated pressure-resistant pipe (43) is double-layered. The top of the corrugated pressure-resistant pipe (43) is connected to the bottom of the guide pipe (42). One end of the liquid inlet head (44) is connected to the bottom of the corrugated pressure-resistant pipe (43), and the other end is connected to the liquid inlet pipe (22) of the vaporizer (2). A pressure-holding layer is provided on the liquid inlet head (44). A first fixed sleeve (45) is provided on the outside of the guide pipe (42). The end of the first fixed sleeve (45) is installed on the outer wall of the water bath (1).

8. A device for safe discharge of liquid overload according to claim 1, characterized in that: One end of the high-altitude exhaust pipe (5) is connected to the exhaust pipe (23) of the vaporizer (2). Multiple second fixed sleeves (59) are provided on the outer wall of the high-altitude exhaust pipe (5). The ends of the second fixed sleeves (59) are installed on the outer wall of the water bath (1). A conical shroud (51) is installed at the top of the high-altitude exhaust pipe (5). An exhaust shroud (57) is installed at the top of the conical shroud (51). A blade support (53) is installed on the inner wall of the conical shroud (51). A central rotating shaft (55) is rotatably connected at the center of the blade support (53). A turbine blade (52) is installed at the bottom of the central rotating shaft (55). The top of the central rotating shaft (55) passes through the exhaust shroud (57). A fan blade (56) is provided on the top outer wall of the central rotating shaft (55).

9. A device for safe discharge of liquid overload according to claim 8, characterized in that: The air distribution pipes (58) are arranged in a circular array on the outer wall of the exhaust hood (57). The end of the air distribution pipe (58) is provided with an end exhaust port (581). Several exhaust holes are provided on the end exhaust port (581). A flow splitting nozzle (582) is provided on the outer wall of the air distribution pipe (58). The flow splitting nozzle (582) is located below the fan blade (56).

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