CN113847545B - Liquefied natural gas gasification transmission and distribution device and method - Google Patents
Liquefied natural gas gasification transmission and distribution device and method Download PDFInfo
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- CN113847545B CN113847545B CN202111077068.6A CN202111077068A CN113847545B CN 113847545 B CN113847545 B CN 113847545B CN 202111077068 A CN202111077068 A CN 202111077068A CN 113847545 B CN113847545 B CN 113847545B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/10—Arrangements for preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0309—Heat exchange with the fluid by heating using another fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0309—Heat exchange with the fluid by heating using another fluid
- F17C2227/0311—Air heating
- F17C2227/0313—Air heating by forced circulation, e.g. using a fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a liquefied natural gas gasification transmission and distribution device and a method, which comprises an expansion cooling box and a feeding pipe arranged in the middle of the left end of the expansion cooling box and used for conveying liquefied natural gas, wherein a plurality of conveying pipes used for conveying gas are arranged at the right end of the expansion cooling box, a buffer box coaxially arranged with the feeding pipe is arranged in the expansion cooling box, the left end of the buffer box is rotatably connected with the inner wall of the expansion cooling box, a plurality of gas ejecting pipes are arrayed and distributed at the outer side of the right end of the buffer box, and the gas ejecting directions of the gas ejecting pipes and the buffer box are arranged in an acute angle.
Description
Technical Field
The invention relates to the technical field of natural gas transportation, in particular to a liquefied natural gas gasification transmission and distribution device and a method.
Background
The main component of liquefied natural gas is methane, the cleanest fossil energy on the earth is known, and is colorless, tasteless, nontoxic and noncorrosive, and its manufacturing process is with the natural gas purification treatment of gas field production earlier, after a series of ultra-low temperature liquefaction, utilize the liquefied natural gas ship to transport, the air pollution after the liquefied natural gas burning is very little, and the heat of giving off is big moreover, so liquefied natural gas is a more advanced energy, liquefied natural gas need turn into the gaseous state with the liquid state and could use, need liquefied natural gas gasification equipment to be used for the conversion. The outer air heat of the liquefied natural gas absorption tube in the gasification tube when current liquefied natural gas gasification device gasifies, can lead to the gasification tube outer wall to frost, the liquefied natural gas heat absorption efficiency that leads to the back entering step down, damage the pipeline very easily, and then lead to cracked problem, to above-mentioned problem, a liquefied natural gas gasification device has been published to the patent that current patent publication number is CN210373521U, the device is carrying out the natural gas gasification when carrying out, adopt the electromagnetic mode to heat the natural gas, this kind of heating method certainly need consume very big electric energy.
However, considering that the natural gas can generate large pressure energy during gasification, it can be considered that the energy can be reasonably utilized, and further the energy consumption generated by transportation can be reduced.
Disclosure of Invention
The present invention is directed to a liquefied natural gas gasification distribution apparatus and method, which solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a liquefied natural gas gasification distribution device, includes expansion cooling box and sets up the inlet pipe that is used for carrying liquefied natural gas at its left end intermediate position, expansion cooling box right-hand member is equipped with a plurality of conveyer pipe that is used for carrier gas, the inside buffer tank that sets up with the inlet pipe is coaxial of being equipped with of expansion cooling box, buffer tank left end and expansion cooling box inner wall rotate to be connected, buffer tank right-hand member outside array distribution has the jet-propelled pipe of a plurality of, the jet-propelled direction and the buffer tank of pipe are the acute angle setting, and the jet-propelled reaction force that produces of jet-propelled pipe can form the rotation moment like this, expansion cooling box outside cover is equipped with one and is used for endothermic heat absorption outer container, heat absorption outer container left side is equipped with and is used for carminative blast pipe and voltage limiting valve, be equipped with the choke valve on the blast pipe, the heat absorption outer container right-hand member is used for providing the hot gas's subassembly through hot gas duct connections, the inside heat absorption outer container still around being equipped with the electricity auxiliary heat pipe that is used for the heating, the inside temperature sensor who detects the temperature of heat absorption outer container, temperature sensor and electricity auxiliary pipe electric connection control panel.
As a further scheme of the invention: the heating power assembly comprises a plurality of pressurizing cylinders fixed on the right side of the expansion cooling box and a rotating column connected with the center position of the right end of the cache box, wherein the right end of the rotating column is coaxially provided with a transmission shaft, the right end of the transmission shaft penetrates through the right side wall of the expansion cooling box, the transmission shaft close to the pressurizing cylinders is provided with an eccentric wheel, a piston block is arranged in each pressurizing cylinder in a sliding fit mode, the inner end face of the piston block is fixedly connected with the pressurizing cylinders through reset springs, the outer end face of the piston block is provided with a pressing column, the tail end of the pressing column rotates to be provided with a pressing wheel in pressing contact with the outer side face of the eccentric wheel, a one-way exhaust valve for one-way exhaust is arranged on a hot gas conveying pipe close to the pressurizing cylinders, and the outer sides of the pressurizing cylinders are provided with one-way gas inlet check valves for one-way gas inlet.
As a further scheme of the invention: and a plurality of heat exchange fins are arranged on the surface of the expansion cooling box where the heat absorption outer box is located.
As a further scheme of the invention: and a plurality of turbulence blades are arranged on the outer side of the rotating column.
As a further scheme of the invention: the expansion cooling box is characterized in that a fixing ring is fixed on the inner wall of the left side of the expansion cooling box where the cache box is located, and the fixing ring and the cache box are fixedly connected through a fixing bearing.
As a further scheme of the invention: the transmission shaft and the rotating column are also provided with auxiliary heat exchange pieces for cooling the interior of the expansion cooling box; the auxiliary heat exchange part comprises a first cavity and a second cavity, the first cavity is arranged inside the rotary column, the second cavity is arranged inside the transmission shaft, the first cavity is communicated with the second cavity, an exhaust inner tube is coaxially arranged in the second cavity inside the hot gas conveying pipe, an air inlet channel is formed between the exhaust inner tube and the inner wall of the transmission shaft, the exhaust inner tube is internally provided with an exhaust channel, the outer side of the right end of the air inlet channel is provided with an air inlet and an air inlet guide plate arranged at the air inlet, the outer side of the transmission shaft inside the rotary column is provided with a plurality of branch pipes, the outer end of each branch pipe is provided with an air injection plate, and the air injection plate is provided with an air injection hole for injecting air to the inner wall of the rotary column.
As a still further scheme of the invention: the surface of the air inlet channel where the eccentric wheel is located is provided with heat exchange fins, and the heat exchange fins are used for heating inlet air and reasonably utilizing internal friction energy.
Compared with the prior art, the invention has the beneficial effects that: the device is designed aiming at the defects of the existing device, the pressure energy generated by natural gas expansion is reasonably utilized, the pressure energy is utilized to drive the piston plate to extrude external air, so that the air temperature is increased, a layer of heat exchange air flow is formed outside the expansion cooling box, and in addition, the device is matched with the expansion cooling box to cool the axial line position, so that the temperature rise of the gasified natural gas is effectively improved, the conveying safety is ensured, and the practicability is high.
Drawings
Fig. 1 is a schematic view of the left side of the present invention.
Fig. 2 is a schematic diagram of the right side structure of the present invention.
Fig. 3 is a schematic view of the internal structure of the present invention.
FIG. 4 is a schematic view of the structure of the gas injection plate of the present invention.
Wherein: the device comprises an expansion cooling box 11, a buffer box 12, a feeding pipe 13, a fixed bearing 14, a fixed ring 15, an air injection pipe 16, an air exhaust inner pipe 17, a rotary column 18, an air injection plate 19, a branch pipe 20, a transmission shaft 21, a delivery pipe 22, a pressing wheel 23, an air inlet guide plate 24, an eccentric wheel 25, a pressing column 26, a piston block 27, a return spring 28, a pressurization cylinder 29, a one-way exhaust valve 30, a hot air delivery pipe 31, an electric auxiliary heat pipe 32, an outer heat absorption box 33, a throttle valve 34 and an exhaust pipe 35.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, in an embodiment of the present invention, a liquefied natural gas gasification transmission and distribution apparatus includes an expansion cooling tank 11 and a feeding pipe 13 disposed at a middle position of a left end of the expansion cooling tank 11 for conveying liquefied natural gas, the right end of the expansion cooling tank 11 is provided with a plurality of conveying pipes 22 for conveying gas, a buffer tank 12 disposed coaxially with the feeding pipe 13 is disposed inside the expansion cooling tank 11, the left end of the buffer tank 12 is rotatably connected to an inner wall of the expansion cooling tank 11, a plurality of gas injection pipes 16 are distributed in an array manner outside the right end of the buffer tank 12, a gas injection direction of the gas injection pipes 16 is disposed at an acute angle with respect to the buffer tank 12, so that a reaction force generated by the gas injection pipes 16 can form a rotation moment, an outer heat absorption box 33 for absorbing heat is sleeved outside the expansion cooling tank 11, an exhaust pipe 35 and a pressure limiting valve are disposed on a left side of the outer heat absorption box 33, the exhaust pipe 35 is provided with a throttle valve 34, a right end of the outer heat absorption box 33 is connected to a thermal assembly for providing hot gas through the conveying pipe 31, an electric auxiliary heat pipe 32 for heating the heat pipe, and an auxiliary heat pipe temperature sensor is disposed inside the heat absorption pipe for detecting temperature sensor, and the auxiliary heat pipe 32 is connected to the heat pipe, and the auxiliary temperature sensor, and the electric auxiliary sensor is disposed inside the heat pipe 32 for detecting panel, and the electric sensor, when the electric sensor is lower than the electric auxiliary sensor, and the electric sensor;
the thermal power assembly comprises a plurality of pressurizing cylinders 29 fixed on the right side of the expansion cooling box 11 and a rotating column 18 connected with the center position of the right end of the cache box 12, the right end of the rotating column 18 is coaxially provided with a transmission shaft 21, the right end of the transmission shaft 21 penetrates through the right side wall of the expansion cooling box 11, the transmission shaft 21 and the expansion cooling box 11 are in rotary seal, an eccentric wheel 25 is arranged on the transmission shaft 21 close to the pressurizing cylinders 29, a piston block 27 is arranged in each pressurizing cylinder 29 in a sliding fit manner, the inner end surface of the piston block 27 is fixedly connected with the pressurizing cylinders 29 through a return spring 28, a pressure resisting column 26 is arranged on the outer end surface of the piston block 27, a pressure resisting wheel 23 in pressure contact with the outer side surface of the eccentric wheel 25 is rotatably arranged at the tail end of the pressure resisting column 26, a one-way exhaust valve 30 for one-way exhaust is arranged on a hot air conveying pipe 31 close to the pressurizing cylinders 29, and a one-way air inlet one-way valve for one-way air inlet is arranged on the outer side of the pressurizing cylinders 29;
when gas is actually conveyed, after liquefied natural gas enters the buffer tank 12, liquid can be gasified and expanded, the expanded gas is ejected from the gas ejector pipe 16 at a high speed and can generate reverse driving force, so that the buffer tank 12 is driven to rotate at a high speed, the buffer tank 12 drives the rotary column 18 and the transmission shaft 21 to rotate, the transmission shaft 21 drives the eccentric wheel 25 to rotate, a protruding structure on the surface of the eccentric wheel 25 intermittently presses the pressing wheel 23, so that the piston block 27 slides in the pressurizing cylinder 29 in a reciprocating manner, outside air can be sucked and compressed, the temperature of the air can be rapidly increased by compressed air, then high-temperature air enters the heat absorption outer tank 33 through the hot gas conveying pipe 31, the high-temperature air can expand the inner wall of the cooling tank 11 to generate heat exchange, and a large amount of heat in the gasified natural gas can be absorbed, so that the conveyed natural gas is at normal temperature;
according to the device, pressure energy generated by natural gas expansion is converted into kinetic energy to work air, so that the temperature of the air is increased, and then a heat exchange layer is formed on the surface of the expansion cooling box 11 by high-temperature air, so that the consumption of electric energy in the conventional device is reduced, and energy is greatly saved;
in order to further improve the heat exchange effect, the surface of the expansion cooling box 11 where the heat absorption outer box 33 is located is provided with a plurality of heat exchange fins;
in order to make the heat exchange more uniform, a plurality of turbulence blades are arranged on the outer side of the rotating column 18, so that the gasified natural gas is uniformly distributed;
a fixing ring 15 is fixed on the inner wall of the left side of the expansion cooling box 11 where the buffer box 12 is located, and the fixing ring 15 is connected and fixed with the buffer box 12 through a fixing bearing 14, so that the buffer box 12 can freely rotate in the fixing ring 15;
the transmission shaft 21 and the rotating column 18 are also provided with auxiliary heat exchange pieces for cooling the interior of the expansion cooling box 11;
the auxiliary heat exchange part comprises a first cavity arranged inside the rotary column 18 and a second cavity arranged inside the transmission shaft 21, the first cavity is communicated with the second cavity, an exhaust inner pipe 17 is coaxially arranged in the second cavity inside the hot gas conveying pipe 31, an air inlet channel is formed between the exhaust inner pipe 17 and the inner wall of the transmission shaft 21, the exhaust inner pipe 17 is internally provided with an exhaust channel, the outer side of the right end of the air inlet channel is provided with an air inlet and an air inlet guide plate 24 arranged at the air inlet, the outer side of the transmission shaft 21 inside the rotary column 18 is provided with a plurality of branch pipes 20, the outer end of each branch pipe 20 is provided with an air injection plate 19, and the air injection plate 19 is provided with air injection holes for injecting air to the inner wall of the rotary column 18;
during actual operation, the transmission shaft 21 drives the air inlet guide plate 24 to rotate rapidly, under the guidance of the air inlet guide plate 24, external airflow flows in along an air inlet channel, then enters the air injection plate 19 along the branch pipe 20, and then is injected to the inner wall of the rotary column 18 from the air injection hole so as to exchange heat with the inner wall of the rotary column 18, and cold air is discharged along an exhaust channel in the exhaust inner pipe 17, wherein the airflow is directly injected to the inner wall of the rotary column 18 through the guidance of air inlet, so that the problem of an ice layer is avoided, and the ice layer can be broken and taken away by high-speed airflow even if the ice layer occurs;
the surface of the air inlet channel where the eccentric wheel 25 is located is provided with a heat exchange sheet, so that heat generated by friction between the eccentric wheel 25 and the pressing wheel 23 can be absorbed by entering air flow, and the heat exchange effect is effectively improved.
The working principle of the invention is as follows: in practical use, after liquefied natural gas enters the buffer tank 12, liquid can be gasified and expanded, expanded gas can generate reverse driving force when being ejected from the gas ejector pipe 16 at a high speed, so that the buffer tank 12 is driven to rotate at a high speed, the buffer tank 12 drives the rotary column 18 and the transmission shaft 21 to rotate, the transmission shaft 21 drives the eccentric wheel 25 to rotate, the protruding structure on the surface of the eccentric wheel 25 intermittently presses the pressing wheel 23, so that the piston block 27 slides back and forth in the pressurizing cylinder 29, external air can be sucked and compressed, the compressed air can enable the temperature of the air to rise sharply, then high-temperature air enters the heat absorption outer box 33 through the hot air conveying pipe 31, the high-temperature air can expand and cool the inner wall of the cooling tank 11 to perform heat exchange, so that a large amount of heat in the gasified natural gas is absorbed, when the temperature in the heat absorption outer box 33 does not reach a preset value, auxiliary heating is performed through electric auxiliary heating, the transmission shaft 21 drives the air inlet 24 to rotate quickly, under the guidance of the air inlet guide plate 24, external air flows along the inlet channel, then enters the gas ejector plate 19 along the branch pipe 20, then is ejected to the inner wall of the jet column 18, the inner wall and the inner wall of the air is exhausted along the heat exchange channel, so that the inner pipe 17 is exhausted normally.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
Claims (7)
1. The liquefied natural gas gasification transmission and distribution device comprises an expansion cooling box (11) and a feeding pipe (13) which is arranged in the middle of the left end of the expansion cooling box and is used for conveying liquefied natural gas, wherein a plurality of conveying pipes (22) used for conveying gas are arranged at the right end of the expansion cooling box (11);
the expansion cooling device is characterized in that a buffer box (12) which is coaxial with a feeding pipe (13) is arranged in the expansion cooling box (11), the left end of the buffer box (12) is rotatably connected with the inner wall of the expansion cooling box (11), a plurality of air injection pipes (16) are distributed on the outer side of the right end of the buffer box (12) in an array manner, the air injection direction of the air injection pipes (16) and the buffer box (12) are arranged in an acute angle manner, and thus the reaction force generated by the air injection of the air injection pipes (16) can form a rotating moment;
the expansion cooling box (11) is sleeved with a heat absorption outer box (33) for absorbing heat, the left side of the heat absorption outer box (33) is provided with an exhaust pipe (35) and a pressure limiting valve for exhausting, the exhaust pipe (35) is provided with a throttle valve (34), and the right end of the heat absorption outer box (33) is connected with a thermal assembly for providing hot air through a hot air conveying pipe (31);
an electric auxiliary heat pipe (32) for heating is further wound inside the heat absorption outer box (33), a temperature sensor for detecting temperature is arranged inside the heat absorption outer box (33), and the temperature sensor and the electric auxiliary heat pipe (32) are electrically connected with a control panel;
the heating power assembly comprises a plurality of pressurizing cylinders (29) fixed on the right side of an expansion cooling box (11) and a rotary column (18) connected with the center of the right end of a cache box (12), wherein the right end of the rotary column (18) is coaxially provided with a transmission shaft (21), the right end of the transmission shaft (21) penetrates through the right side wall of the expansion cooling box (11), the transmission shaft (21) and the expansion cooling box (11) are in rotary sealing, an eccentric wheel (25) is arranged on the transmission shaft (21) close to the pressurizing cylinders (29), a piston block (27) is arranged inside each pressurizing cylinder (29) in a sliding fit mode, the inner end face of each piston block (27) is fixedly connected with the pressurizing cylinders (29) through a reset spring (28), the outer end face of each piston block (27) is provided with a pressure resisting cylinder (26), the tail ends of the pressure resisting cylinders (26) are rotatably provided with pressure resisting wheels (23) in pressure contact with the outer side faces of the eccentric wheels (25), one-way exhaust valves (30) for one-way exhaust are arranged on hot air conveying pipes (31) close to the pressurizing cylinders (29), and one-way air inlet one-way air valves for pressurizing are arranged on the outer sides of the pressurizing cylinders (29).
2. The LNG gasification distribution apparatus according to claim 1, wherein the expansion cooling tank (11) in which the outer heat absorption tank (33) is located has a plurality of heat exchange fins on its surface.
3. The lng gasification distribution plant according to claim 1, wherein a plurality of spoiler blades are provided outside the rotary column (18).
4. The LNG gasification distribution and distribution device according to claim 1, wherein a fixing ring (15) is fixed to the inner wall of the left side of the expansion cooling tank (11) where the buffer tank (12) is located, and the fixing ring (15) and the buffer tank (12) are fixedly connected through a fixing bearing (14).
5. The lng gasification distribution plant according to claim 1, wherein the transmission shaft (21) and the rotary column (18) are further provided with auxiliary heat exchange members for cooling the interior of the expansion cooling tank (11);
supplementary heat transfer spare is including setting up at the inside first cavity of column spinner (18) and setting up the inside second cavity in transmission shaft (21), first cavity and second cavity intercommunication, coaxial exhaust inner tube (17) that is equipped with in the inside second cavity of hot gas conveyer pipe (31), form inlet channel between exhaust inner tube (17) and transmission shaft (21) inner wall, exhaust inner tube (17) inside is exhaust passage, the inlet channel right-hand member outside is equipped with the air inlet and sets up air inlet guide plate (24) in air inlet department, is located transmission shaft (21) outside of column spinner (18) inside and is equipped with a plurality of bleeder (20), and every bleeder (20) outer end all is equipped with one and spouts gas plate (19), be equipped with the jet-propelled fumarole to column spinner (18) inner wall on gas plate (19).
6. The LNG gasification distribution apparatus of claim 1, wherein the surface of the inlet passage where the eccentric wheel (25) is located is provided with heat exchange fins for heating the inlet air to make reasonable use of the internal friction energy.
7. A method for using the liquefied natural gas gasification distribution device according to any one of claims 1 to 6, wherein after the liquefied natural gas enters the buffer tank (12), the liquid is gasified and expanded, the expanded gas is ejected from the gas injection pipe (16) at a high speed to generate a reverse driving force, so as to drive the buffer tank (12) to rotate at a high speed, the buffer tank (12) drives the rotary column (18) and the transmission shaft (21) to rotate, the transmission shaft (21) drives the eccentric wheel (25) to rotate, the protruding structure on the surface of the eccentric wheel (25) intermittently presses the pressing wheel (23), so that the piston block (27) slides back and forth in the pressurizing cylinder (29), so that the external air can be sucked and compressed, the compressed air can lead the temperature of the air to be increased sharply, then the heated air is sent into the heat absorption outer tank (33) through the hot gas conveying pipe (31), the heated air can expand the inner wall of the cooling tank (11) to generate heat exchange, so as to absorb a large amount of heat in the gasified natural gas, and when the temperature in the heat absorption outer tank (33) does not reach a preset value, the auxiliary heat exchange is assisted by the electric heating;
transmission shaft (21) drive air intake guide plate (24) fast turn, under the guide of air intake guide plate (24), external air current flows in along inlet channel, then it is inside to get into gas spout board (19) along bleeder (20), then spout to column spinner (18) inner wall from the fumarole again, thereby carry out the heat exchange with column spinner (18) inner wall, air conditioning is followed afterwards along the inside exhaust passage of exhaust inner tube (17) and is discharged, through inside and outside double-deck heat transfer like this, it is in normal temperature to have guaranteed that exhaust gas temperature.
Priority Applications (1)
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