Gasification apparatus with screw step channel

Abstract

This invention relates to the field of liquid vaporization and transportation technology, and discloses a vaporization device with a spiral stepping channel, including an active protection mechanism. The active protection mechanism includes a first protective shell installed on the outer wall of one end of a threaded delivery pipe. A second protective shell is provided at one end of the preheating pipe near the threaded delivery pipe. This invention uses a pneumatically driven telescopic column assembly and protective shells to quickly form a closed annular protective structure around the leak point, effectively preventing the leaked medium from spreading outwards. Compressed air drives the annular rubber pad to expand, tightly fitting it to the leak gap, achieving targeted sealing of the leak point, resulting in a more direct and reliable sealing effect. This dual protection mechanism provides a valuable time window for handling leaks, significantly reducing the safety risks caused by the leakage of flammable and explosive media.

Description

Technical Field

[0001] This invention relates to the field of liquid vaporization and transportation technology, and more specifically to a vaporization device having a spiral stepping channel. Background Technology

[0002] Gasification units are used to convert liquid media such as liquefied natural gas and liquefied petroleum gas into gaseous forms for output. Among these, the spiral stepping channel structure is widely used due to its ability to increase heat exchange area and improve gasification efficiency. This unit has an internal spiral flow channel through which the liquid is heated and vaporized, and finally discharged from the outlet via an external pipeline.

[0003] However, there is a risk of leakage at the connection between the device's outlet and external pipelines (such as flanges and threaded interfaces). It is worth noting that the medium at this location may still be a high-pressure liquid, a gas-liquid mixture, or already vaporized. If a leak occurs due to seal aging, vibration, or other reasons, media with flammable, explosive, or low-temperature properties will leak out rapidly. If the leaking medium is liquid, it will rapidly vaporize and diffuse, making immediate detection difficult; if it is gaseous, it can easily create an explosive atmosphere. Currently, the system mainly relies on manual inspections, which is not only inefficient but also unable to provide immediate response, posing significant safety hazards.

[0004] Therefore, there is an urgent need for a gasification device with a spiral stepping channel to solve the aforementioned technical problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a gasification device with a spiral stepping channel to solve the problems existing in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gasification device with a spiral stepping channel, comprising a gasification device, wherein the gasification device includes a gasification chamber disposed therein, characterized in that a threaded conveying pipe is installed on the side of the top of the gasification device, an active protection mechanism is provided at the end of the threaded conveying pipe away from the gasification device, and a preheating pipe is provided at the end of the active protection mechanism away from the threaded conveying pipe.

[0007] The active protection mechanism includes a first protective shell, wherein the first protective shell is installed on the outer wall of one end of the threaded conveying pipe, and the preheating pipe is provided with a second protective shell at one end near the threaded conveying pipe.

[0008] When the first protective shell comes into contact with the second protective shell, a ring-shaped protective structure is formed between the first protective shell and the second protective shell. This ring-shaped protective structure wraps around the connection between the active protection mechanism and the threaded delivery pipe, and is used to temporarily protect the leakage location of the active protection mechanism and the threaded delivery pipe, so as to prevent the liquid leaked at the connection between the two from being transmitted to the outside.

[0009] Preferably, the other end of the threaded conveying pipe is located inside the gasification chamber, wherein the other end of the threaded conveying pipe is spiral-shaped, and an auxiliary heating device is installed inside the gasification device to provide controllable heat energy to the gasification chamber.

[0010] Preferably, a first heating groove and a second heating groove are sequentially formed inside the top and bottom of the preheating pipe. A conveying hole is formed inside one end of the first heating groove, and the first heating groove, the second heating groove and the conveying hole are in a state of gas mutual flow.

[0011] Preferably, an auxiliary pipe is installed at one end of the preheating pipe, and an annular air groove is formed inside the auxiliary pipe near the preheating pipe. An auxiliary conveying pipe is provided on the inner wall of the first heating tank near the auxiliary pipe, and the end of the auxiliary conveying pipe away from the first heating tank extends into the interior of the annular air groove.

[0012] Preferably, the inner side of the second protective shell is installed on the outside of the auxiliary pipe, and the auxiliary pipe has multiple sets of sliding grooves equidistantly opened on the outer side near the position of the second protective shell. A slider is movably sleeved inside the sliding groove, and the end of the slider away from the position of the sliding groove is installed on the inner side of the second protective shell.

[0013] Preferably, a telescopic column assembly is installed on the side of the slider, the telescopic column assembly is installed inside the slide groove, and a micro-conveying pipe is installed at the end of the telescopic column assembly away from the slider position, and the end of the micro-conveying pipe away from the telescopic column assembly position is set in the annular air groove.

[0014] Preferably, the hot air inside the annular air groove is transmitted to the interior of the telescopic column assembly through a micro-conveying pipe. When the amount of hot air inside the telescopic column assembly reaches the rated value, the driver performs a stretching operation. The telescopic column assembly in the stretched state drives the slider to move parallel inside the groove.

[0015] The second protective shell has hollow columns installed at equal intervals on its side near the position of the first protective shell.

[0016] Preferably, one end of the hollow column extends into the interior of the second protective shell, and the other end of the hollow column is provided with an open countersunk groove. A sealing plate is provided in the countersunk groove, and a torsion spring device is installed at the connection between the sealing plate and the first conveying pipe so that the sealing plate in the rotating state can return to its original position.

[0017] The threaded conveying pipe has a limiting annular groove on its side near the preheating pipe.

[0018] Preferably, an inductive switch is provided at the top of the limiting annular groove, wherein an annular rubber plate is installed on the outer side of the auxiliary pipe near the threaded conveying pipe, wherein the annular rubber plate is located inside the limiting annular groove, and is used to seal the connection between the threaded conveying pipe and the auxiliary pipe, and when the auxiliary pipe is located inside the limiting annular groove, it cannot contact the inductive switch.

[0019] Multiple sets of limiting grooves are sequentially and equidistantly formed inside the first protective shell near the position of the second protective shell.

[0020] Preferably, the multiple sets of limiting grooves correspond one-to-one with the multiple sets of first conveying pipes, and the shape of each limiting groove is adapted to the partial shape of the first conveying pipe body to accommodate and fit it. Each set of limiting grooves is equipped with an extrusion column inside, and the first protective shell is equipped with an annular rubber pad on the inner side near the limiting groove, wherein the annular rubber pad and each set of limiting grooves are in a state of gas mutual flow.

[0021] The technical effects and advantages of this invention are as follows:

[0022] This invention, through the combined design of a ring-shaped rubber plate and an inductive switch, can trigger a signal at the first moment when a leak occurs at a pipe connection and automatically alarm the control components, completely changing the lag of traditional manual inspections and greatly improving the speed and reliability of detecting safety hazards.

[0023] This invention utilizes a pneumatically driven telescopic column assembly and protective shell to quickly form a closed annular protective structure around the leak point, effectively preventing the leaked medium from spreading outwards. Compressed air drives the annular rubber pad to expand, tightly sealing the leak gap and achieving targeted plugging of the leak point, resulting in a more direct and reliable seal. This dual protection mechanism provides a valuable time window for handling leaks, significantly reducing the safety risks caused by the leakage of flammable and explosive media.

[0024] This invention heats the liquid within a spiral pipe at the end of a threaded conveying pipe. This design significantly increases the contact area and residence time between the liquid and the heated wall, allowing heat energy to be transferred to the liquid more fully and evenly. This avoids localized overheating or underheating, thereby greatly improving the core efficiency of liquid vaporization and ensuring the stability and thoroughness of the vaporization process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at point A is shown below;

[0027] Figure 3 for Figure 1The cross-sectional view of the preheating pipe shown;

[0028] Figure 4 for Figure 2 Side sectional view of the auxiliary pipeline shown;

[0029] Figure 5 for Figure 4 The diagram shows the overall structure of the second protective shell.

[0030] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point B is shown below;

[0031] Figure 7 for Figure 5 An enlarged schematic diagram of the structure at point C is shown;

[0032] Figure 8 for Figure 2 The diagram shows the overall structure of the first protective shell.

[0033] Figure 9 for Figure 8 The diagram shows a partial structural cross-sectional view of the first protective shell.

[0034] The attached figures are labeled as follows: 1. Gasification device; 101. Threaded conveying pipe; 1011. Limiting annular groove; 2. Preheating pipe; 201. First heating groove; 202. Second heating groove; 203. Conveying hole; 204. Auxiliary conveying pipe; 3. Active protection mechanism; 301. First protective shell; 302. Second protective shell; 303. Auxiliary pipe; 3031. Annular gas groove; 3032. Slide groove; 304. Annular rubber plate; 305. Hollow column; 306. Sliding block; 307. Telescopic column assembly; 308. Miniature conveying pipe; 309. First conveying pipe; 310. Sealing plate; 311. Annular rubber pad; 312. Limiting groove; 313. Extrusion column. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The gasification device with a spiral stepping channel involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figures 1 to 3As shown, the present invention provides a gasification device with a spiral stepping channel, including a gasification device 1. The gasification device 1 includes a gasification chamber disposed therein. A threaded conveying pipe 101 is installed on the side of the top of the gasification device 1. An active protection mechanism 3 is provided at one end of the threaded conveying pipe 101 away from the gasification device 1. A preheating pipe 2 is provided at one end of the active protection mechanism 3 away from the threaded conveying pipe 101.

[0037] The active protection mechanism 3 includes a first protective shell 301, wherein the first protective shell 301 is installed on the outer wall of one end of the threaded conveying pipe 101, and the preheating pipe 2 is provided with a second protective shell 302 at one end near the threaded conveying pipe 101.

[0038] When the first protective shell 301 comes into contact with the second protective shell 302, a ring-shaped protective structure is formed between the first protective shell 301 and the second protective shell 302. This ring-shaped protective structure wraps around the connection between the active protection mechanism 3 and the threaded conveying pipe 101, and is used to temporarily protect the leakage location of the active protection mechanism 3 and the threaded conveying pipe 101, so as to prevent the liquid leaked at the connection between the two from being transmitted to the outside.

[0039] In this embodiment, a rubber layer is laid at the contact point between the first protective shell 301 and the second protective shell 302.

[0040] The other end of the threaded conveying pipe 101 is located inside the gasification chamber, and the other end of the threaded conveying pipe 101 is spiral-shaped. An auxiliary heating device is installed inside the gasification device 1 to provide controllable heat energy to the gasification chamber.

[0041] In this embodiment, a K-type thermocouple is installed on the surface of the vaporization device 1 to monitor the real-time temperature change inside the vaporization chamber, so as to control the auxiliary heating device to adjust the vaporization temperature inside the vaporization chamber in real time.

[0042] The specific workflow of this embodiment is as follows: The preheated liquid, after being preheated by the preheating pipe 2, is fed into the vaporization chamber via the threaded conveying pipe 101. The spiral end of the pipe, located inside the vaporization chamber, facilitates further dispersion and uniform distribution of the liquid. During this process, a K-type thermocouple installed on the surface of the vaporization device 1 continuously monitors the real-time temperature changes inside the vaporization chamber and feeds the data back to the control system. The control system compares the measured temperature with the preset target temperature and then, based on the deviation, sends a command to the auxiliary heating device installed inside the vaporization device 1 to dynamically adjust the controllable heat energy it provides to the vaporization chamber: if the temperature is too low, heating is increased to accelerate liquid vaporization; if the temperature is too high, heating is reduced to prevent over-vaporization or overheating. This achieves precise, closed-loop, and real-time adjustment of the vaporization temperature inside the vaporization chamber, ensuring that the liquid vaporization process is always at the optimal temperature.

[0043] Reference Figures 1 to 3 As shown, the present invention provides a gasification device with a spiral stepping channel. The top and bottom of the preheating pipe 2 are sequentially provided with a first heating groove 201 and a second heating groove 202. A conveying hole 203 is provided at one end of the first heating groove 201. The first heating groove 201, the second heating groove 202 and the conveying hole 203 are in a state of mutual gas flow.

[0044] In this embodiment of the application, the specific workflow of this part of the application embodiment is as follows: the air heating device generates hot air and transmits it to the interior of the first heating tank 201 to preheat the liquid transported inside the preheating pipe 2. The hot air inside the first heating tank 201 is transported back to the heating device through the transmission hole 203 and the second heating tank 202, and then reused.

[0045] Reference Figures 1 to 9 As shown, the present invention provides a gasification device with a spiral stepping channel. An auxiliary pipe 303 is installed at one end of the preheating pipe 2. An annular gas groove 3031 is opened in the auxiliary pipe 303 near the preheating pipe 2. An auxiliary conveying pipe 204 is provided on the inner wall of the first heating groove 201 near the auxiliary pipe 303. The end of the auxiliary conveying pipe 204 away from the first heating groove 201 extends into the interior of the annular gas groove 3031.

[0046] The inner side of the second protective shell 302 is installed on the outside of the auxiliary pipe 303. The auxiliary pipe 303 has multiple sets of sliding grooves 3032 equidistantly opened on the outer side of the auxiliary pipe 303 near the position of the second protective shell 302. A slider 306 is movably sleeved inside the sliding groove 3032. One end of the slider 306 away from the sliding groove 3032 is installed on the inner side of the second protective shell 302.

[0047] A telescopic column assembly 307 is installed on the side of the slider 306. The telescopic column assembly 307 is installed inside the slide groove 3032. A micro conveying pipe 308 is installed at the end of the telescopic column assembly 307 away from the slider 306. The end of the micro conveying pipe 308 away from the telescopic column assembly 307 is located in the annular air groove 3031.

[0048] The hot air inside the annular air groove 3031 is transmitted to the inside of the telescopic column assembly 307 through the micro conveying pipe 308. When the amount of hot air inside the telescopic column assembly 307 reaches the rated value, the entire driver performs a stretching operation. The telescopic column assembly 307 in the stretched state drives the slider 306 to move parallel inside the slide groove 3032.

[0049] In this embodiment, the interiors of the telescopic column assembly 307, the slider 306, and the second protective shell 302 are in a state of mutual gas flow. Part of the compressed air inside the telescopic column assembly 307 is transmitted to the interior of the slider 306, and another part of the air is stored inside the telescopic column assembly 307. When the compressed air inside the telescopic column assembly 307 reaches the rated value, the telescopic column assembly 307 is driven to be in a stretched state. The interior of the telescopic column assembly 307 is provided with micro air pores, and part of the compressed air is transmitted to the interiors of the slider 306 and the second protective shell 302 through the micro air pores.

[0050] Hollow columns 305 are sequentially and equidistantly installed on the side of the second protective shell 302 near the position of the first protective shell 301. One end of the hollow column 305 extends into the interior of the second protective shell 302, and the other end of the hollow column 305 is provided with an open countersunk groove. A sealing plate 310 is provided in the countersunk groove. A torsion spring device is installed at the connection between the sealing plate 310 and the first conveying pipe 309 so that the sealing plate 310 in the rotating state can return to its original position.

[0051] In this embodiment, the sealing plate 310 consists of two sets of semicircular plates, the outer walls of which are covered with a rubber layer. The number of torsion spring devices is two, which are respectively installed at both ends of the sealing plate 310.

[0052] The threaded conveying pipe 101 has a limiting annular groove 1011 on its side near the preheating pipe 2. A sensor switch is installed at the top of the limiting annular groove 1011. An annular rubber plate 304 is installed on the outer side of the auxiliary pipe 303 near the threaded conveying pipe 101. The annular rubber plate 304 is located inside the limiting annular groove 1011 and is used to seal the connection between the threaded conveying pipe 101 and the auxiliary pipe 303. When the auxiliary pipe 303 is inside the limiting annular groove 1011, it cannot contact the sensor switch.

[0053] In this embodiment, when a leak occurs at the connection between the threaded conveying pipe 101 and the auxiliary pipe 303, the liquid inside the preheating pipe 2 moves towards the annular rubber plate 304 through the leak at the connection between the threaded conveying pipe 101 and the auxiliary pipe 303, driving the annular rubber plate 304 to move towards the outer side of the limiting annular groove 1011 until the annular rubber plate 304 contacts the induction switch.

[0054] Multiple sets of limiting grooves 312 are sequentially and equidistantly formed inside the first protective shell 301 near the second protective shell 302. The multiple sets of limiting grooves 312 correspond one-to-one with the multiple sets of first conveying pipes 309 in position, and the shape of each limiting groove 312 is adapted to the partial shape of the pipe body of the first conveying pipe 309 to accommodate and fit it. Each set of limiting grooves 312 is equipped with an extrusion column 313. An annular rubber pad 311 is installed on the inner side of the first protective shell 301 near the limiting groove 312, wherein the annular rubber pad 311 and each set of limiting grooves 312 are in a state of mutual gas flow.

[0055] The ratio of the diameter of the extrusion column 313 to the inner diameter of the first conveying pipe 309 is 1:2.

[0056] The specific workflow for this application is as follows:

[0057] Step 1: The liquid inside the preheating pipe 2 is transferred to the inside of the threaded conveying pipe 101. The liquid inside the threaded conveying pipe 101 is transferred to the spiral pipe at one end. At the same time, the auxiliary heating device inside the vaporization device 1 inputs working current to provide controllable heat energy to the vaporization chamber to heat the liquid in the spiral pipe.

[0058] Step 2: The air heating device generates hot air and transmits it to the inside of the first heating tank 201 to preheat the liquid transported inside the preheating pipe 2. The hot air inside the first heating tank 201 is transported back to the heating device through the conveying hole 203 and the second heating tank 202, and then reused.

[0059] Step 3: When a leak occurs at the connection between the threaded conveying pipe 101 and the auxiliary pipe 303, the liquid inside the preheating pipe 2 moves towards the annular rubber plate 304 through the leak at the connection between the threaded conveying pipe 101 and the auxiliary pipe 303, driving the annular rubber plate 304 to move towards the outer side of the limiting annular groove 1011 until the annular rubber plate 304 contacts the induction switch. At this time, the induction switch sends an induction electrical signal to the control component inside the gasification device 1, and the control component determines that a leak has occurred at the connection between the threaded conveying pipe 101 and the auxiliary pipe 303.

[0060] Step 4: With the recovery pipeline in a closed state, the hot air inside the first heating tank 201 is continuously transported to the annular air tank 3031 through the auxiliary conveying pipe 204. The compressed air inside the annular air tank 3031 is input into the telescopic column assembly 307 through the micro conveying pipe 308. Part of the compressed air inside the telescopic column assembly 307 is transmitted to the slider 306 and the second protective shell 302 through the micro air hole groove, while the other part of the air is stored inside the telescopic column assembly 307. When the compressed air inside the telescopic column assembly 307 reaches the rated value, the telescopic column assembly 307 is driven into the stretched state, driving the slider 306 and the second protective shell 302 to move towards the position of the first protective shell 301 until the first conveying pipe 309 enters the interior of the limiting groove 312.

[0061] Step 5: When the first delivery pipe 309 reaches the designated position, a set of annular protective structures will be formed between the first protective shell 301 and the second protective shell 302. The annular protective structure wraps around the connection between the active protection mechanism 3 and the threaded delivery pipe 101, and is used to temporarily protect the leakage position of the auxiliary pipe 303 and the threaded delivery pipe 101, so as to prevent the liquid leaked at the connection between the two from being transmitted to the outside.

[0062] Step 6: The extrusion column 313 presses against the sealing plate 310, and the sealing plate 310 is in the open state. The compressed air inside the first delivery pipe 309 is transmitted to the inside of the limiting groove 312, and then through the inside of the limiting groove 312 to the annular rubber pad 311, driving the annular rubber pad 311 to expand and fit against the leakage position of the auxiliary pipe 303 and the threaded delivery pipe 101, and further sealing the position.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gasification device with a spiral stepping channel, comprising a gasification device (1), said gasification device (1) including a gasification chamber disposed therein, characterized in that, A threaded conveying pipe (101) is installed on the side of the top of the gasification device (1). An active protection mechanism (3) is provided at one end of the threaded conveying pipe (101) away from the gasification device (1). A preheating pipe (2) is provided at one end of the active protection mechanism (3) away from the threaded conveying pipe (101). The active protection mechanism (3) includes a first protective shell (301), wherein the first protective shell (301) is installed on the outer wall of one end of the threaded conveying pipe (101), and the preheating pipe (2) is provided with a second protective shell (302) at one end near the threaded conveying pipe (101); When the first protective shell (301) comes into contact with the second protective shell (302), a set of annular protective structures will be formed between the first protective shell (301) and the second protective shell (302). The annular protective structure wraps around the connection between the active protection mechanism (3) and the threaded conveying pipe (101) to temporarily protect the leakage location of the active protection mechanism (3) and the threaded conveying pipe (101) and prevent the liquid leaked at the connection between the two from being transmitted to the outside.

2. The gasification device with a spiral stepping channel according to claim 1, characterized in that: The other end of the threaded conveying pipe (101) is located inside the gasification chamber, wherein the other end of the threaded conveying pipe (101) is spiral-shaped, and an auxiliary heating device is installed inside the gasification device (1) to provide controllable heat energy to the gasification chamber.

3. The gasification device with a spiral stepping channel according to claim 1, characterized in that: The preheating pipe (2) has a first heating groove (201) and a second heating groove (202) sequentially opened inside the top and bottom. A conveying hole (203) is opened inside one end of the first heating groove (201). The first heating groove (201), the second heating groove (202) and the conveying hole (203) are in a state of mutual gas flow.

4. The gasification device with a spiral stepping channel according to claim 3, characterized in that: An auxiliary pipe (303) is installed at one end of the preheating pipe (2). The auxiliary pipe (303) has an annular air groove (3031) inside near the preheating pipe (2). The first heating tank (201) has an auxiliary delivery pipe (204) on its inner wall near the auxiliary pipe (303). The end of the auxiliary delivery pipe (204) away from the first heating tank (201) extends into the annular air groove (3031).

5. The gasification device with a spiral stepping channel according to claim 4, characterized in that: The inner side of the second protective shell (302) is installed on the outside of the auxiliary pipe (303). The auxiliary pipe (303) has multiple sets of sliding grooves (3032) equidistantly opened on the outer side near the second protective shell (302). A slider (306) is movably sleeved inside the sliding groove (3032). One end of the slider (306) away from the sliding groove (3032) is installed on the inner side of the second protective shell (302).

6. The gasification device with a spiral stepping channel according to claim 5, characterized in that: A telescopic column assembly (307) is installed on the side of the slider (306). The telescopic column assembly (307) is installed inside the slide groove (3032). A micro-conveying pipe (308) is installed at one end of the telescopic column assembly (307) away from the slider (306). The other end of the micro-conveying pipe (308) away from the telescopic column assembly (307) is located in the annular air groove (3031).

7. The gasification device with a spiral stepping channel according to claim 6, characterized in that: The hot air inside the annular air groove (3031) is transmitted to the inside of the telescopic column assembly (307) through the micro conveying pipe (308). When the amount of hot air inside the telescopic column assembly (307) reaches the rated value, the driver performs a stretching operation. The telescopic column assembly (307) in the stretched state drives the slider (306) to move parallel inside the slide groove (3032). The second protective shell (302) has hollow columns (305) installed at equal intervals on its side near the first protective shell (301).

8. The gasification device with a spiral stepping channel according to claim 7, characterized in that: One end of the hollow column (305) extends into the interior of the second protective shell (302), and the other end of the hollow column (305) is provided with an open countersunk groove. A sealing plate (310) is provided in the countersunk groove. A torsion spring device is installed at the connection between the sealing plate (310) and the first conveying pipe (309) so that the sealing plate (310) in the rotating state can return to its original position. The threaded conveying pipe (101) has a limiting annular groove (1011) on its side near the preheating pipe (2).

9. The gasification device with a spiral stepping channel according to claim 8, characterized in that: A sensor switch is provided at the top of the limiting annular groove (1011). An annular rubber plate (304) is installed on the outer side of the auxiliary pipe (303) near the threaded conveying pipe (101). The annular rubber plate (304) is located inside the limiting annular groove (1011) and is used to seal the connection between the threaded conveying pipe (101) and the auxiliary pipe (303). When the auxiliary pipe (303) is located inside the limiting annular groove (1011), it cannot contact the sensor switch. Multiple sets of limiting grooves (312) are sequentially and equidistantly formed inside the first protective shell (301) near the position of the second protective shell (302).

10. The gasification device with a spiral stepping channel according to claim 9, characterized in that: The multiple sets of limiting grooves (312) correspond one-to-one with the multiple sets of first conveying pipes (309) in position, and the shape of each limiting groove (312) is adapted to the partial shape of the pipe body of the first conveying pipe (309) to accommodate and fit it. Each set of limiting grooves (312) is equipped with an extrusion column (313). The first protective shell (301) is equipped with an annular rubber pad (311) on its inner side near the limiting groove (312), wherein the annular rubber pad (311) and each set of limiting grooves (312) are in a state of mutual gas flow.

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