Liquefied natural gas (LNG) fuel gasification device for ship

Abstract

The invention discloses a ship LNG fuel gasification device which comprises a shell part, a spiral heat exchange pipe is arranged in the shell part, the two ends of the spiral heat exchange pipe penetrate through the upper end and the lower end of the shell part and are connected with a feeding pipe and a discharging pipe correspondingly, and a heat transfer medium input pipe is inserted into the bottom of the shell part and connected with an external heat supply gas source; an exhaust pipe is inserted into the top of the shell part; the deicing assembly comprises an ice scraping part which is arranged on the outer wall of the shell part in a sleeving mode, the ice scraping part is in transmission connection with a driving part, and the driving part is used for driving the ice scraping part to move up and down along the outer wall of the shell part in a reciprocating mode to remove ice on the outer wall of the shell part. The deicing assembly is arranged, the ice scraping part is driven by the driving part to move up and down along the outer wall of the shell part in a reciprocating mode so that the outer wall of the shell part can be deiced, rotating equipment in the driving part can adopt a guide base and a fan impeller, the ice scraping part is driven to move through entering heat transfer media, and energy consumption is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of LNG fuel gasification, and in particular to a ship LNG fuel gasification device. Background Art

[0002] At present, LNG engines are widely used on ships, and LNG engines need to use LNG fuel. LNG fuel is usually stored in LNG fuel tanks. When LNG fuel is input into LNG engines, it is necessary to convert LNG fuel from liquid to LNG gas through an LNG fuel gasification device. At present, the existing LNG fuel gasification device usually exchanges heat between the incoming LNG fuel and the heat transfer medium flowing in the heat exchange tube to convert LNG fuel into LNG gas. Since the LNG fuel gasification process is an endothermic process, the LNG fuel will cause the temperature around the gasification device to decrease when passing through the gasification device. If the temperature of the environment in which it is used is low, the surface of the gasification device will freeze. The surface of the gasification device will freeze, which not only affects the stable use of the gasification device, but also easily causes the gasification device to malfunction. To this end, we propose a ship LNG fuel gasification device. Summary of the invention

[0003] The object of the present invention is to provide a ship LNG fuel gasification device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A ship LNG fuel gasification device, comprising:

[0006] The shell part has a spiral heat exchange tube inside, the two ends of the spiral heat exchange tube pass through the upper and lower ends of the shell part and are respectively connected to the feed pipe and the discharge pipe, a heat transfer medium input pipe is inserted at the bottom of the shell part, the heat transfer medium input pipe is connected to the external heating gas source, and an exhaust pipe is inserted at the top of the shell part;

[0007] De-icing kit, including:

[0008] The ice scraper is sleeved on the outer wall of the shell, and the ice scraper is connected to the driving part in a transmission manner. The driving part is used to drive the ice scraper to move up and down along the outer wall of the shell to remove ice from the outer wall of the shell.

[0009] A further improvement is that the driving unit comprises:

[0010] Two groups of reciprocating screws are respectively arranged on both sides of the outer wall of the shell part for vertical rotation. The outer walls of the two groups of reciprocating screws are threadedly sleeved with connecting blocks connected to the top of the ice scraping part. The two groups of reciprocating screws are connected to the output end of a rotating device.

[0011] A further improvement is that the rotating device comprises:

[0012] A guide seat is arranged on the pipeline of the heat transfer medium input pipe;

[0013] The impeller is rotatably arranged in the guide seat and driven to rotate by the heat transfer medium entering the guide seat. The shaft of the impeller is respectively connected to the two sets of reciprocating screws.

[0014] A further improvement is that a ring-shaped liquid receiving part with a hollow top is provided at the lower end of the outer wall of the shell part and below the ice scraping part;

[0015] The ice scraping unit comprises:

[0016] An annular member, the inner wall of which is movably inserted with a plurality of groups of arc-shaped scrapers, the outer side of the arc-shaped scrapers is provided with an elastic connecting member penetrating the annular member, the elastic connecting member is connected with a wedge-shaped block, the inclined surface of the wedge-shaped block slides against a contact rod, and the contact rod is provided on the outer wall of the annular liquid contact member;

[0017] When the contact rod contacts the wedge block, the arc scraper is separated from the outer wall of the shell part; when the contact rod is separated from the wedge block, the arc scraper is driven by the elastic connecting member to contact the outer wall of the shell part.

[0018] A further improvement is that the housing portion comprises:

[0019] An outer shell has an inner cylinder fixedly arranged inside thereof, a friction cylinder is rotatably arranged between the outer shell and the inner cylinder, outer walls on opposite sides of the inner cylinder and the outer shell are respectively provided with a heat-conducting friction member 1 and a heat-conducting friction member 2 for contacting the friction cylinder, an outer wall of the inner cylinder is also provided with a thermal insulation layer, the thermal insulation layer is between the heat-conducting friction member 1 and the inner cylinder, the friction cylinder is transmission-connected to the shaft of the impeller through a gear transmission member, the inner cavity between the outer shell and the friction cylinder, and the inner cavity between the friction cylinder and the inner cylinder are both connected with a pressure relief pipeline, and the pressure relief pipeline is inserted on the outer shell.

[0020] A further improvement is that the inner wall of the heat-conducting friction member 2 is provided with a plurality of groups of grooves in a circular array, and a friction block for contacting the friction cylinder is movably provided in the groove, the friction block and the groove bottom are connected by an elastic member, a driving member electrically connected to an external controller is provided in the groove, the driving member is used to drive the friction block to move to contact or separate from the friction cylinder, the external controller is electrically connected to a detection sensor 1, and the detection sensor 1 is arranged on the outer casing, and when it is detected that the external temperature is lower than a preset threshold value, the external controller controls the driving member to drive the friction block to move to contact the friction cylinder.

[0021] A further improvement is that the connecting block is slidably connected to the outer wall of the outer shell, a magnetic ring is embedded in the bottom of the connecting block, an electromagnetic ring that is powered to attract the magnetic ring is embedded in the top of the ring, the electromagnetic ring is electrically connected to an external controller, the external controller is electrically connected to detection sensor 2, the detection sensor 2 is used to detect the temperature of the inner cavity between the outer shell and the friction cylinder, and when the temperature of the inner cavity between the outer shell and the friction cylinder reaches a preset threshold, the electromagnetic ring is powered to attract the magnetic ring.

[0022] A further improvement is that a plurality of groups of counterweight blocks are embedded in the bottom of the annular member, and a limit ring for contacting the annular member is fixedly sleeved on the lower end of the outer wall of the reciprocating screw.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1) The present invention is provided with an ice-removing assembly, and the outer wall of the shell part can be de-iced by driving the ice scraper part to move up and down along the outer wall of the shell part through the driving part, and the rotating device in the driving part can adopt a guide seat and a fan wheel, and the heat transfer medium entering is used to drive the ice scraper part to move, which effectively saves energy consumption;

[0025] 2) The present invention is also provided with a friction cylinder, a heat-conducting friction member 1 and a heat-conducting friction member 2. When the detection sensor 1 detects that the external temperature is lower than a preset threshold, the friction block on the outer wall of the heat-conducting friction member 2 can be brought into contact with the friction cylinder, and then the friction cylinder and the friction block generate heat when the driving part is working and transfer it to the outer shell, effectively preventing the outer surface of the outer shell from icing. When it is detected that the external temperature is not lower than the preset threshold, the friction cylinder will only rub heat with the heat-conducting friction member 1 to improve the gasification quality of the LNG fuel;

[0026] 3) The arc scraper in the ice scraping part of the present invention does not contact the outer shell under the action of the wedge block and the contact rod, thereby preventing ice from forming at the contact position between the arc scraper and the outer shell when no de-icing is performed, thereby affecting the subsequent movement of the arc scraper with the ring part and the connecting block, and a second detection sensor is arranged to cooperate with each other. Only when the detection sensor 2 detects that the temperature of the inner cavity between the outer shell and the friction cylinder reaches a preset threshold, the connecting block will be connected to the ring part and drive the ring part to move, ensuring that the de-icing operation is carried out under the best conditions, reducing the difficulty of de-icing with the arc scraper, and avoiding damage to the outer wall of the outer shell, and when the connecting block is separated from the ring part, the ring part moves downward under the action of gravity, and the arc scraper is automatically retracted through the action of the wedge block and the contact rod, thereby avoiding unnecessary wear of the arc scraper when it is not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the gasification device of the present invention;

[0028] Figure 2 For the present invention Figure 1 Structural cross-section view;

[0029] Figure 3 For the present invention Figure 1 A cross-sectional view of the structure from another perspective;

[0030] Figure 4 It is a schematic diagram of the structure of the deicing assembly in the present invention;

[0031] Figure 5 It is a schematic structural diagram of the second heat-conducting friction member in the present invention;

[0032] Figure 6 For the present invention Figure 3 A magnified view of structure A.

[0033] In the figure: 1, outer shell; 2, spiral heat exchange tube; 3, heat transfer medium input pipe; 4, friction cylinder; 5, inner cylinder; 51, insulation layer; 6, heat conductive friction member 1; 7, heat conductive friction member 2; 8, friction block; 9, elastic member; 10, guide seat; 11, impeller; 12, detection sensor 1; 13, gear transmission member; 14, pressure relief pipeline; 15, deicing assembly; 151, reciprocating screw; 152, annular liquid contact member; 153, ice scraping part; 1531, annular member; 1532, arc scraper; 1533, elastic connecting member; 1534, wedge block; 1535, contact rod; 154, connecting block; 16, detection sensor 2; 17, driving member. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] Please see attached Figure 1 -Attached Figure 4 , a ship LNG fuel gasification device, comprising:

[0037] The shell part has a spiral heat exchange tube 2 inside, and both ends of the spiral heat exchange tube 2 pass through the upper and lower ends of the shell part and are respectively connected to the feed pipe and the discharge pipe. The other end of the feed pipe is connected to the pump body of the LNG storage tank, and the LNG fuel in the LNG storage tank is input to the feed pipe through the pump body. The other end of the discharge pipe is connected to the natural gas pipeline, so as to transport the gasified LNG fuel to the LNG engine;

[0038] A heat transfer medium input pipe 3 is inserted at the bottom of the shell part, and the heat transfer medium input pipe 3 is connected to an external heating gas source, which can be high-temperature exhaust gas discharged from the LNG engine input by a high-pressure pump or heating gas supplied by an external heating device, etc. An exhaust pipe is inserted at the top of the shell part, and the other end of the exhaust pipe can be connected to an external filtering device, etc.;

[0039] The de-icing assembly 15 comprises:

[0040] The ice scraper 153 is annular and sleeved on the outer wall of the shell body. The ice scraper 153 is transmission-connected to a driving part, and the driving part is used to drive the ice scraper 153 to move back and forth up and down along the outer wall of the shell body to remove ice from the outer wall of the shell body. When the temperature of the environment in which the vaporization device is used is low, ice is likely to form on the outer wall of the shell body, affecting the use of the vaporization device and even causing the vaporization device to malfunction. For this reason, the ice scraper 153 is driven by the driving part to move back and forth up and down to remove ice from the outer wall of the shell body, so as to ensure the stable use of the vaporization device and prevent it from malfunctioning.

[0041] Preferably, the driving unit of this embodiment includes:

[0042] Two groups of reciprocating screws 151 are respectively arranged on both sides of the outer wall of the shell part for vertical rotation. The outer walls of the two groups of reciprocating screws 151 are threadedly sleeved with connecting blocks 154 connected to the top of the ice scraping part 153. The two groups of reciprocating screws 151 are connected to the output end of a rotating device, and the rotating device is, for example, a motor and a reducer, of course, not limited to this type. The threads on the two groups of reciprocating screws 151 can be selected according to actual conditions and will not be described in detail here. It is only necessary to ensure that when the two groups of reciprocating screws 151 rotate, the two groups of connecting blocks 154 move upward to the desired position synchronously and then move downward synchronously.

[0043] Example 2

[0044] Please see attached Figure 1 -Attached Figure 4 , based on Example 1, the rotating device of this embodiment includes:

[0045] The guide seat 10 is arranged on the pipeline of the heat transfer medium input pipe 3. Specifically, the heat transfer medium input pipe 3 includes an input pipeline and an output pipeline, and the input pipeline and the output pipeline are connected to the input end and the output end of the guide seat 10 respectively, wherein the input pipeline is connected to the external heating gas source, and the output pipeline is connected to the inner cavity of the shell part;

[0046] The impeller 11 is rotatably arranged in the guide seat 10 and is driven to rotate by the heat transfer medium (gas) entering the guide seat 10. The shaft of the impeller 11 is respectively connected to the two groups of reciprocating screws 151 for transmission. For example, the end of the reciprocating screw 151 and the shaft of the impeller 11 can be connected through a bevel gear set (two groups of meshing bevel gears). It should be noted that if a bevel gear set is used, the rotation directions of the two groups of reciprocating screws 151 will be opposite to each other. In order to ensure that the connecting blocks 154 on the two groups of reciprocating screws 151 move upward or downward synchronously, the threads on the two groups of reciprocating screws 151 can be set to be opposite. In this way, when the heat transfer medium (gas) is input into the inner cavity of the shell part, the impeller 11 will rotate, and then the impeller 11 will drive the two groups of reciprocating screws 151 to rotate, and then the two groups of reciprocating screws 151 drive the connecting block 154, and the connecting block 154 drives the ice scraping part 153 to move back and forth up and down to remove ice.

[0047] Example 3

[0048] Please see attached Figure 1 -Attached Figure 4 On the basis of Example 2, an annular liquid receiving member 152 with a hollow top is provided at the lower end of the outer wall of the shell part and below the ice scraping part 153. The bottom of the annular liquid receiving member 152 also has a liquid discharge port, and a removable plug body seal is provided at the liquid discharge port. The ice and water scraped by the ice scraping part 153 flow downward along the outer wall of the shell part and are collected by the annular liquid receiving member 152, and will not fall on the ground in the area where the shell part is located, so as to prevent users from slipping;

[0049] The ice scraping unit 153 includes:

[0050] The annular member 1531 has a movable opening for the reciprocating screw 151 to pass through, and a plurality of groups of arc scrapers 1532 are movably inserted into the inner wall of the annular member 1531. The outer side of the arc scraper 1532 is provided with an elastic connecting member 1533 that penetrates the annular member 1531. The elastic connecting member 1533 includes, for example, a guide rod and a spring sleeved on the outer wall of the guide rod. One end of the guide rod is connected to the arc scraper 1532, and the other end penetrates the annular member 1531 and extends to On the outside of the annular member 1531, one end of the spring is connected to the outside of the annular member 1531, and the other end is connected to the outer wall of the guide rod; the elastic connecting member 1533 (guide rod) is connected with a wedge block 1534, the wedge block 1534 is a right-angle trapezoid, the inclined surface of the wedge block 1534 slides against the contact rod 1535, the end of the contact rod 1535 can be embedded with a ball and slide against the inclined surface of the wedge block 1534, and the contact rod 1535 is arranged on the outer wall of the annular liquid contact member 152;

[0051] When the contact rod 1535 contacts the wedge block 1534, the arc scraper 1532 is separated from the outer wall of the shell portion. When the contact rod 1535 is separated from the wedge block 1534, the arc scraper 1532 contacts the outer wall of the shell portion under the driving of the elastic connecting member 1533.

[0052] It should be noted that when the contact rod 1535 contacts the wedge block 1534, the ring 1531 is at the lowest end of the reciprocating screw 151. Under the cooperation of the contact rod 1535 and the wedge block 1534, the arc scraper 1532 does not contact the outer wall of the shell portion, thereby effectively preventing the contact position between the arc scraper 1532 and the outer wall of the shell portion from icing, thereby affecting the connection block 154 to drive the ring 1531 to move, thereby extending the service life of the arc scraper 1532. When the connection block 154 drives the ring 1531 upward to separate the wedge block 1534 from the contact rod 1535, the elastic connection member 1533 causes the arc scraper 1532 to move relative to the ring 1531 and contact the outer wall of the shell portion to achieve de-icing.

[0053] Example 4

[0054] Please see attached Figure 1 -Attached Figure 3 , attached Figure 5 and attached Figure 6 , based on Example 3, the housing portion includes:

[0055] The outer shell 1 is arranged on a support seat, and an inner cylinder 5 is fixedly arranged inside the outer shell 1. The spiral heat exchange tube 2 is arranged in the inner cavity of the inner cylinder 5, and the heat transfer medium input pipe 3 and other pipelines are connected with the inner cylinder 5;

[0056] A friction cylinder 4 is rotatably arranged between the outer shell 1 and the inner cylinder 5. The outer walls of the inner cylinder 5 and the outer shell 1 on the opposite side are respectively provided with a heat-conducting friction member 1 6 and a heat-conducting friction member 2 7 for contacting the friction cylinder 4. The heat-conducting friction member 1 6 and the heat-conducting friction member 2 7 are both annular. The friction cylinder 4, the heat-conducting friction member 1 6 and the heat-conducting friction member 2 7 can all be made of metal materials. The outer wall of the inner cylinder 5 is also provided with a heat-insulating layer 51. The heat-insulating layer 51 can be a heat-insulating coating applied to the outer wall of the inner cylinder 5 or a heat-insulating sleeve sleeved on the outer wall of the inner cylinder 5. The heat-insulating layer 51 Located between the heat-conducting friction member 16 and the inner cylinder 5, the friction cylinder 4 is connected to the shaft of the impeller 11 through a gear transmission member 13. The gear transmission member 13 is, for example, a toothed ring provided on the inner wall of the friction cylinder 4, a gear meshing with the toothed ring, and a bevel gear set connecting the gear shaft and the shaft of the impeller 11. When the shaft of the impeller 11 rotates, the bevel gear set is used to rotate the gear, and then the gear drives the toothed ring to rotate the friction cylinder 4. The friction cylinder 4 rotates and rubs with the heat-conducting friction member 16 and the heat-conducting friction member 2 7 to generate heat;

[0057] The heat generated by the friction cylinder 4 and the heat-conducting friction member 6 can reduce the heat loss in the inner cylinder 5, so that the LNG fuel can be better absorbed by the heat and then gasified, while reducing the condensation of external water vapor and reducing the probability of ice formation on the surface of the outer shell 1;

[0058] The heat generated by the friction cylinder 4 and the heat-conducting friction member 27 can be transferred to the outer wall of the housing 1, effectively reducing the probability of ice forming on the surface of the housing 1. At the same time, when ice forms on the surface of the housing 1, the heat can gradually heat and soften the ice on the surface of the housing 1, making it easier to scrape it off by cooperating with the ice scraper 153.

[0059] The inner cavity between the outer shell 1 and the friction cylinder 4, and the inner cavity between the friction cylinder 4 and the inner cylinder 5 are both connected with a pressure relief pipeline 14. The pressure relief pipeline 14 is a pipeline with a pressure relief valve inside, and the pressure relief pipeline 14 is inserted on the outer shell 1. Because the friction cylinder 4 rotates and rubs with the heat-conducting friction member 1 6 and the heat-conducting friction member 2 7 to generate heat, in order to prevent the internal pressure from increasing and causing damage to the shell part, automatic pressure relief can be performed through the pressure relief pipeline 14.

[0060] Example 5

[0061] Please see attached Figure 1 -Attached Figure 6 On the basis of the fourth embodiment, the inner wall of the heat-conducting friction member 2 7 of the present embodiment is provided with a plurality of groups of grooves in an annular array, and a friction block 8 for contacting the friction cylinder 4 is movably provided in the groove, the friction block 8 is made of metal material, the friction block 8 and the groove bottom are connected by an elastic member 9 (such as a spring), a driving member 17 electrically connected to an external controller is provided in the groove, the driving member 17 is used to drive the friction block 8 to move to contact or separate with the friction cylinder 4, the driving member 17 is, for example, a high-temperature resistant electric telescopic rod or a high-temperature resistant electromagnet; the external controller is electrically connected to a detection sensor 12, the detection sensor 12 is a temperature detection sensor, which belongs to a conventional device in the art and is not described in detail here. The detection sensor 12 is provided on the housing 1, and when it is detected that the external temperature is lower than a preset threshold value, the external controller controls the driving member 17 to drive the friction block 8 to move to contact with the friction cylinder 4, if the driving member 17 is an electromagnet, when the external temperature is not lower than the preset threshold value, the electromagnet is in a power-on state, and when the external temperature is lower than the preset threshold value, the electromagnet is in a power-off state;

[0062] When the outside temperature is not lower than the preset threshold, the friction cylinder 4 will not contact the friction block 8 when rotating, and thus no heat will be generated and transferred to the housing 1 through the heat-conducting friction member 2 7 .

[0063] Preferably, the connection block 154 of the present embodiment is slidably connected to the outer wall of the housing 1, a magnetic ring is embedded in the bottom of the connection block 154, an electromagnetic ring which is powered to attract the magnetic ring is embedded in the top of the annular member 1531, the electromagnetic ring is electrically connected to an external controller, and the external controller is electrically connected to the detection sensor 2 16, the detection sensor 2 16 is a temperature detection sensor, which belongs to conventional equipment in the field and is not described in detail here, the detection sensor 2 16 is used to detect the temperature of the inner cavity between the housing 1 and the friction cylinder 4, and when the temperature of the inner cavity between the housing 1 and the friction cylinder 4 reaches a preset threshold, the electromagnetic ring is powered to attract the magnetic ring;

[0064] When the outside temperature is lower than the preset threshold of the detection sensor 12, the friction cylinder 4 rotates and contacts the friction block 8, thereby generating heat which is transferred to the outer shell 1 through the heat-conducting friction member 2 7, so that the ice on the outer wall of the outer shell 1 gradually softens. As the heat of the inner cavity between the outer shell 1 and the friction cylinder 4 increases and reaches the preset threshold of the detection sensor 2 16, the electromagnetic ring is energized, and then when the connecting block 154 moves close to the annular member 1531, the connecting block 154 adsorbs the connecting annular member 1531, and then the connecting block 154 drives the annular member 1531 to move when moving, and the ice on the outer wall of the outer shell 1 is scraped off by the arc scraper 1532. When the heat between the outer shell 1 and the friction cylinder 4 does not reach the preset threshold of the detection sensor 2 16, the electromagnetic ring is not energized. Although the reciprocating screw 151 rotates at this time, it only causes the connecting block 154 to reciprocate up and down, and does not drive the annular member 1531 to move up and down.

[0065] Preferably, a plurality of groups of counterweight blocks (not shown in the figure) are embedded at the bottom of the annular member 1531 of the present embodiment, and a limit ring for contacting the annular member 1531 is fixedly sleeved at the lower end of the outer wall of the reciprocating screw 151. The limit ring is specifically located at the lower end of the threaded portion of the outer wall of the reciprocating screw 151. When the limit ring contacts the annular member 1531, the contact rod 1535 contacts the wedge block 1534. Since the connecting block 154 is slidably connected to the outer wall of the outer shell 1, when the temperature detected by the detection sensor 12 returns to normal, the friction block 8 no longer contacts the friction cylinder 4, and then gradually the temperature detected by the detection sensor 2 16 also returns to normal. At this time, the electromagnetic ring is powered off, and the annular member 1531 will move downward under the action of the counterweight block to reset and contact the limit ring, thereby making the wedge block 1534 contact the contact rod 1535, so that the arc scraper 1532 is separated from the outer wall of the outer shell 1, realizing the function of automatic retraction, so as to ensure stable use in the later stage.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship LNG fuel gasification device, characterized in that: include: A shell part, inside which a spiral heat exchange tube (2) is arranged, the two ends of the spiral heat exchange tube (2) pass through the upper and lower ends of the shell part and are respectively connected to a feed pipe and a discharge pipe, a heat transfer medium input pipe (3) is inserted at the bottom of the shell part, the heat transfer medium input pipe (3) is connected to an external heating gas source, and an exhaust pipe is inserted at the top of the shell part; A de-icing assembly (15) comprising: The ice scraping part (153) is sleeved on the outer wall of the shell part, and the ice scraping part (153) is transmission-connected to a driving part, and the driving part is used to drive the ice scraping part (153) to move up and down along the outer wall of the shell part to remove ice on the outer wall of the shell part.

2. The gasification device according to claim 1, characterized in that: The driving unit comprises: Two groups of reciprocating screws (151) are respectively arranged on both sides of the outer wall of the shell part for vertical rotation. The outer walls of the two groups of reciprocating screws (151) are both threadedly sleeved with connecting blocks (154) connected to the top of the ice scraping part (153). The two groups of reciprocating screws (151) are both connected to the output end of a rotating device.

3. The gasification device according to claim 2, characterized in that: The rotating device comprises: A guide seat (10) is arranged on the pipeline of the heat transfer medium input pipe (3); The impeller (11) is rotatably arranged in the guide seat (10) and driven to rotate by the heat transfer medium entering the guide seat (10). The shaft of the impeller (11) is respectively connected to the two sets of reciprocating screws (151).

4. The gasification device according to claim 3, characterized in that: An annular liquid receiving part (152) with a hollow top is provided at the lower end of the outer wall of the shell part and below the ice scraping part (153); The ice scraping unit (153) comprises: An annular member (1531) has a plurality of groups of arc-shaped scrapers (1532) movably inserted into its inner wall, an elastic connecting member (1533) penetrating the annular member (1531) is provided on the outer side of the arc-shaped scraper (1532), the elastic connecting member (1533) is connected to a wedge block (1534), the inclined surface of the wedge block (1534) is slidably abutted against a contact rod (1535), and the contact rod (1535) is provided on the outer wall of the annular liquid contact member (152); When the contact rod (1535) contacts the wedge block (1534), the arc scraper (1532) separates from the outer wall of the shell body; when the contact rod (1535) separates from the wedge block (1534), the arc scraper (1532) contacts the outer wall of the shell body under the drive of the elastic connecting member (1533).

5. The gasification device according to claim 4, characterized in that: The housing portion comprises: An outer shell (1) is provided with an inner cylinder (5) fixedly disposed therein, a friction cylinder (4) is rotatably disposed between the outer shell (1) and the inner cylinder (5), outer walls of the inner cylinder (5) and the outer shell (1) on opposite sides are provided with a heat-conducting friction member 1 (6) and a heat-conducting friction member 2 (7) for contacting the friction cylinder (4), the outer wall of the inner cylinder (5) is also provided with a heat-insulating layer (51), the heat-insulating layer (51) is located between the heat-conducting friction member 1 (6) and the inner cylinder (5), the friction cylinder (4) is connected to the shaft of the impeller (11) through a gear transmission member (13), the inner cavity between the outer shell (1) and the friction cylinder (4), and the inner cavity between the friction cylinder (4) and the inner cylinder (5) are both connected with a pressure relief pipeline (14), and the pressure relief pipeline (14) is inserted into the outer shell (1).

6. The gasification device according to claim 5, characterized in that: The inner wall of the heat-conducting friction member 2 (7) is provided with a plurality of grooves in an annular array, and a friction block (8) for contacting the friction cylinder (4) is movably provided in the groove, the friction block (8) and the groove bottom are connected via an elastic member (9), a driving member (17) electrically connected to an external controller is provided in the groove, the driving member (17) is used to drive the friction block (8) to move to contact or separate from the friction cylinder (4), the external controller is electrically connected to a detection sensor 1 (12), the detection sensor 1 (12) is provided on the housing (1), and when it is detected that the external temperature is lower than a preset threshold value, the external controller controls the driving member (17) to drive the friction block (8) to move to contact the friction cylinder (4).

7. The gasification device according to claim 5, characterized in that: The connecting block (154) is slidably connected to the outer wall of the outer shell (1), a magnetic ring is embedded in the bottom of the connecting block (154), and an electromagnetic ring that is powered to attract the magnetic ring is embedded in the top of the annular member (1531). The electromagnetic ring is electrically connected to an external controller, and the external controller is electrically connected to a second detection sensor (16). The second detection sensor (16) is used to detect the temperature of the inner cavity between the outer shell (1) and the friction cylinder (4). When the temperature of the inner cavity between the outer shell (1) and the friction cylinder (4) reaches a preset threshold, the electromagnetic ring is powered to attract the magnetic ring.

8. The gasification device according to claim 7, characterized in that: A plurality of groups of counterweight blocks are embedded at the bottom of the annular member (1531), and a limiting ring for contacting the annular member (1531) is fixedly sleeved on the lower end of the outer wall of the reciprocating screw rod (151).

Images