CN114704769A - Natural gas liquefaction storage output device - Google Patents
Natural gas liquefaction storage output device Download PDFInfo
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- CN114704769A CN114704769A CN202210287314.9A CN202210287314A CN114704769A CN 114704769 A CN114704769 A CN 114704769A CN 202210287314 A CN202210287314 A CN 202210287314A CN 114704769 A CN114704769 A CN 114704769A
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- pipeline
- natural gas
- mixing
- gas transmission
- output device
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
- F16K11/0873—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug the plug being only rotatable around one spindle
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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
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
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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
- F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a natural gas liquefied storage output device, relates to the technical field of natural gas, and solves the problems that liquefied natural gas in a storage tank is not used thoroughly enough, and much unnecessary waste is caused; when the natural gas is used, a large amount of condensed water can be generated, and the conventional natural gas output device does not have the problem of treating the condensed water. The natural gas liquefaction storage output device is provided with the vaporization output device, the gas transmission pipeline, the overflow pipeline and the mixing pipeline are connected by the three-way valve, the three-way valve is rotated to control the communication of the mixing pipeline and the gas transmission pipeline or the overflow pipeline, and the three-way valve is connected with the plugging block, so that the switching of the functions of liquefaction storage and vaporization output is realized, the use is convenient, and the structure is compact; utilize to overflow the pipe connection heat exchanger, can cool down the natural gas of vaporization to the liquefaction, reinjection to the inner tank in, prevent the inner tank internal pressure intensity change, improve the storage security.
Description
Technical Field
The invention relates to the technical field of natural gas, in particular to a natural gas liquefaction storage output device.
Background
LNG, i.e., liquefied natural gas, is natural gas that is liquid at normal pressure obtained by purifying natural gas produced in a gas field and then liquefying the natural gas at a series of ultra-low temperatures, and is known as the cleanest fossil energy on earth. A cooling device for a liquefied natural gas storage tank is a device for cooling a storage tank in the storage process of liquefied natural gas, and is widely used in the field of energy storage; the existing cooling device for the liquefied natural gas storage tank is discovered in use, the temperature difference between the inside and the outside of the storage tank is large, the failure rate of the storage tank is improved, the storage state of the liquefied natural gas is influenced, and the storage safety of the liquefied natural gas is reduced.
Chinese patent CN214275332U discloses a cooling device for an lng storage tank, which reduces the temperature difference between the inside and the outside of the storage tank, reduces the failure rate of the storage tank, stabilizes the storage state of the lng, improves the storage safety of the lng, and increases the practicability; including the bottom plate, the holding vessel, two sets of backup pads, two sets of bracing pieces, the roof, the limiting plate, adjusting threaded rod, the slider, motor element, the spray pipe, the water tank, communicating pipe, water pump assembly, drinking-water pipe and raceway, the top of two sets of backup pads is connected with both sides around the bottom of holding vessel respectively, the bottom of two sets of backup pads is connected with both sides around the top of bottom plate respectively, the top outside of bottom plate is provided with the sluicing groove, the bottom of two sets of bracing pieces is connected with both sides around the top of bottom plate respectively, the top of two sets of bracing pieces is connected with both sides around the bottom of roof respectively, the top of limiting plate is connected with the bottom of roof.
Although this application solves the problems in the background art to some extent, the following problems exist in this application: 1. the whole device is large in size and not easy to move, and after the liquefied natural gas in the storage tank is partially vaporized, the liquefied natural gas cannot be processed, so that the pressure in the tank is changed; 2. the liquefied natural gas in the storage tank is inconvenient to use, and when the storage tank for the liquefied natural gas is stopped, the liquefied natural gas in the storage tank is not used thoroughly enough, so that unnecessary waste is caused; 3. when the natural gas is used, a large amount of condensed water is generated, and the conventional natural gas output device does not process the condensed water.
Disclosure of Invention
The invention aims to provide a natural gas liquefied storage output device which is provided with a vaporization output device, wherein a three-way valve is used for connecting a gas pipeline, an overflow pipeline and a mixing pipeline, the three-way valve is rotated to control the communication of the mixing pipeline and the gas pipeline or the overflow pipeline, and a plugging block is connected on the three-way valve, so that the switching of the functions of liquefied storage and vaporized output is realized, the use is convenient, and the structure is compact; in the process of liquefied storage, the overflow pipeline is connected with the heat exchanger, so that the vaporized natural gas can be cooled to be liquefied and is reinjected into the inner tank, the pressure change in the inner tank is prevented, and the storage safety is improved; in the process of vaporization output, a mixing pipeline is used for inputting gas-liquid mixed natural gas into a gas transmission pipeline, a plugging block is arranged in the mixing pipeline, and the siphon principle is used for avoiding that the liquefied natural gas in an inner tank is not used thoroughly enough to cause unnecessary waste; the movable rotating ring is arranged in the gas transmission pipeline, the functional board is driven to rotate by utilizing the airflow of the natural gas, and the water scraping device is matched for use, so that condensed water drops on the gas transmission pipeline can be quickly scraped, the outer wall of the gas transmission pipeline is prevented from being frozen, the heat absorption of the gas transmission pipeline is accelerated, and the vaporization effect of the natural gas is improved; the condensate water flows down around the heat preservation layer through the water guide groove and the spiral groove, the temperature of the condensate water is low, the heat preservation layer is cooled, the temperature difference between the inside and the outside of the storage tank can be reduced, and the inner tank is protected so as to solve the problem in the background technology.
The invention adopts the following technical scheme:
a natural gas liquefied storage output device comprises a device base, wherein a natural gas storage tank and a heat exchanger are arranged on the upper surface of the device base, four corners of the bottom of the device base are respectively provided with a damping moving wheel, the natural gas storage tank comprises an inner tank and a heat insulation layer, and the top of the natural gas storage tank is provided with a vaporization output device;
the vaporization output device comprises a gas transmission pipeline, an overflow pipeline, a mixing pipeline and a three-way valve, the three-way valve is fixed at the top of the natural gas storage tank, the gas transmission pipeline, the overflow pipeline and the mixing pipeline are all connected to the three-way valve, a control valve is arranged at the bottom of the gas transmission pipeline, a water scraping structure is arranged at the upper part of the gas transmission pipeline, the other end of the overflow pipeline is connected with a heat exchanger, the bottom of the mixing pipeline extends into the inner tank, and a liquid inlet pipeline is fixedly connected to the lower side part of the mixing pipeline;
the bottom of the heat exchanger is connected with a reinjection pipeline, the output end of the reinjection pipeline is communicated with the inner tank, and a low-temperature pump is arranged on the reinjection pipeline.
Preferably, the water scraping structure comprises two rotating rings and two sleeving rings, the rotating rings are arranged inside the gas transmission pipeline, two annular sliding grooves are formed in the gas transmission pipeline at intervals, a sliding ring is arranged on the outer wall of the middle of each rotating ring and can be rotatably connected in the sliding grooves, the rotating rings are in one-to-one corresponding sliding connection with the sliding grooves, the rotating rings are made of magnetic materials, and a plurality of inclined functional plates are arranged inside the rotating rings;
the cup jointing ring is sleeved on the outer wall of the gas transmission pipeline, the cup jointing ring corresponds to the rotating rings one by one, each rotating ring corresponds to one of the gas transmission pipelines at the position of the cup jointing ring, an iron sheet is embedded in each cup jointing ring, each cup jointing ring is connected with the corresponding rotating ring in a suction mode through the iron sheet, an arc-shaped water scraping plate is connected between the two cup jointing rings, and the arc-shaped water scraping plates are attached to the outer wall of the gas transmission pipeline.
Preferably, when the two rotating rings rotate, the two sleeved rings are driven to synchronously rotate, so that the arc-shaped water scraping plates are driven to rotate, and the arc-shaped water scraping plates can scrape water drops on the gas pipeline.
Preferably, the water chute has been seted up on the heat preservation of gas transmission pipeline below, is provided with the helicla flute on the lateral wall of heat preservation, and the one end of water chute is connected with the upper end of helicla flute, and the lower extreme of helicla flute is provided with water guide pipeline.
Preferably, a valve core is arranged in the three-way valve, the lower end of the valve core is connected with a long rotating shaft, the long rotating shaft is located in the mixing pipeline, the lower end of the long rotating shaft is movably connected with the lower end of the mixing pipeline, a plugging block is fixedly connected to the position, close to the pipeline opening of the liquid inlet pipeline, of the long rotating shaft, and the plugging block is rotatably connected with the lower inner wall of the mixing pipeline.
Preferably, the upper side and the lower side of the outer wall of the blocking block are both provided with a limiting slide block, the lower inner wall of the mixing pipeline is provided with two annular limiting slide grooves, and the limiting slide blocks are correspondingly connected in the limiting slide grooves in a sliding manner, so that the blocking block is rotationally connected with the mixing pipeline;
when the valve core rotates to communicate the mixing pipeline with the overflow pipeline, the pipeline opening of the liquid inlet pipeline can be plugged by the plugging block;
when the valve core rotates to connect the mixing pipeline and the gas pipeline, the blocking block is moved away from the pipeline outlet of the liquid inlet pipeline.
Preferably, the upper inner wall of the mixing pipeline is provided with a helical blade, the helical blade surrounds the upper part of the long rotating shaft, and a round hole is formed in the joint of the lower end of the helical blade and the mixing pipeline.
Preferably, the lower end of the mixing pipeline is of a sealing structure, the lower end of the mixing pipeline is provided with an air inlet disc, air inlets are formed in the circumference of the air inlet disc at equal intervals, and the air inlets are communicated with the mixing pipeline.
Preferably, the lower end of the liquid inlet pipeline extends to the bottom of the inner tank.
Preferably, one side of natural gas storage jar is provided with the natural gas line, the natural gas line can extend to in the natural gas storage jar.
Compared with the prior art, the invention has the beneficial effects that:
1. the natural gas liquefaction storage output device is provided with the vaporization output device, the gas transmission pipeline, the overflow pipeline and the mixing pipeline are connected by the three-way valve, the three-way valve is rotated to control the communication of the mixing pipeline and the gas transmission pipeline or the overflow pipeline, and the three-way valve is connected with the plugging block, so that the switching of the functions of liquefaction storage and vaporization output is realized, the use is convenient, and the structure is compact;
2. according to the natural gas liquefaction storage output device, in the liquefaction storage process, the overflow pipeline is connected with the heat exchanger, vaporized natural gas can be cooled to be liquefied and is injected back into the inner tank, the pressure change in the inner tank is prevented, and the storage safety is improved;
3. according to the natural gas liquefied storage output device, in the vaporization output process, the natural gas mixed with gas and liquid is input into the gas transmission pipeline by using the mixing pipeline, the plugging block is arranged in the mixing pipeline, and the siphon principle is utilized to avoid the situation that the liquefied natural gas in the inner tank is not used thoroughly enough to cause unnecessary waste;
4. according to the natural gas liquefied storage output device, the movable rotating ring is arranged in the gas transmission pipeline, the functional plate is driven to rotate by utilizing the airflow of natural gas, and the natural gas liquefied storage output device is matched with the water scraping device for use, so that condensed water drops on the gas transmission pipeline can be quickly scraped, the outer wall of the gas transmission pipeline is prevented from being frozen, the heat absorption of the gas transmission pipeline is accelerated, and the vaporization effect of the natural gas is improved;
5. according to the natural gas liquefaction storage output device provided by the invention, the condensed water flows down around the heat insulation layer through the water chute and the spiral groove, the temperature of the condensed water is low, the heat insulation layer is cooled, the temperature difference between the inside and the outside of the storage tank can be reduced, and the inner tank is protected.
Drawings
FIG. 1 is an overall block diagram of the present invention;
fig. 2 is a view showing the internal structure of the natural gas storage tank of the present invention;
FIG. 3 is a structural view of a vaporization output apparatus of the present invention;
fig. 4 shows a wiper device according to the invention;
FIG. 5 is a structural view of a rotating ring of the present invention;
fig. 6 is a view showing an internal structure of a mixing pipe in a state where natural gas is stored according to the present invention;
FIG. 7 is a partial block diagram of a three-way valve according to the present invention;
fig. 8 is a view showing an internal structure of a mixing pipe in a state of vaporizing export natural gas according to the present invention.
In the figure: 1. a device base; 11. a shock absorbing moving wheel; 2. a natural gas storage tank; 21. an inner tank; 211. a natural gas pipeline; 22. a heat-insulating layer; 221. a water chute; 222. a helical groove; 3. a heat exchanger; 31. reinjection into the pipeline; 32. a cryopump; 4. a vaporization output device; 41. a gas pipeline; 411. a control valve; 412. a rotating ring; 413. a sleeving connection ring; 414. a sliding ring; 415. a function board; 416. an arc-shaped wiper blade; 42. an overflow pipe; 43. a mixing duct; 431. an air inlet disc; 432. a helical blade; 433. a circular hole; 44. a three-way valve; 441. a valve core; 442. a long rotating shaft; 443. a plugging block; 444. a limiting slide block; 445. and a limiting sliding groove.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
referring to fig. 1 to 8, a natural gas liquefied storage and output device includes a device base 1, a natural gas storage tank 2 and a heat exchanger 3 are disposed on an upper surface of the device base, and damping moving wheels 11 are disposed at four corners of a bottom of the device base.
The natural gas storage tank comprises an inner tank 21 and an insulating layer 22, and the top of the natural gas storage tank is provided with a vaporization output device 4.
The vaporization output device comprises a gas transmission pipeline 41, an overflow pipeline 42, a mixing pipeline 43 and a three-way valve 44, the three-way valve is fixed at the top of the natural gas storage tank, and the gas transmission pipeline, the overflow pipeline and the mixing pipeline are all connected to the three-way valve.
The bottom of the gas pipeline is provided with a control valve 411, and the upper part of the gas pipeline is provided with a water scraping structure.
The other end of the overflow pipe is connected to a heat exchanger 3.
The bottom of the mixing pipe extends into the inner tank 21, and the lower side part of the mixing pipe is fixedly connected with a liquid inlet pipe 45.
The bottom of the heat exchanger is connected with a reinjection pipeline 31, the output end of the reinjection pipeline is communicated with the inner tank, and a low-temperature pump 32 is arranged on the reinjection pipeline.
The water scraping structure comprises two rotating rings 412 and two sleeving rings 413, the rotating rings are arranged in the gas transmission pipeline 41, two annular sliding grooves are formed in the inner space of the gas transmission pipeline, sliding rings 414 are arranged on the outer wall of the middle of the rotating rings, the sliding rings can be rotatably connected in the sliding grooves, the rotating rings 412 are in one-to-one sliding connection with the sliding grooves, the rotating rings are made of magnetic materials, and a plurality of inclined function boards 415 are arranged in the rotating rings.
The cover connects ring 413 cover on gas transmission pipeline's outer wall, and the cover connects ring and rotatory ring one-to-one, corresponds a rotatory ring in every gas transmission pipeline who connects ring position department, and the cover connects the intra-annular to have the iron sheet, and the cover connects the ring to pass through the iron sheet and is connected with rotatory ring actuation, be connected with an arc wiper 416 between two cover connects the ring, the outer wall laminating of arc wiper and gas transmission pipeline.
The principle of the wiper structure is as follows:
use through gas transmission pipeline 41 output after the natural gas vaporization, the air current of natural gas can drive two rotatory rings 412 rotations after passing through function board 415, follows the rotation with two cover connection rings 413 of rotatory ring 412 actuation to drive the rotation of arc wiper blade, arc wiper blade 416 rotates around gas transmission pipeline 41, scrapes the condensate drop on the gas transmission pipeline 41, accelerates gas transmission pipeline 41 heat absorption, improves the vaporization effect of natural gas.
A water guide groove 221 is formed in the heat insulation layer below the gas transmission pipeline, a spiral groove 222 is formed in the side wall of the heat insulation layer, one end of the water guide groove is connected with the upper end of the spiral groove, and a water guide pipeline is arranged at the lower end of the spiral groove.
When exporting the natural gas, the natural gas is become the gaseous state by the liquefied phase, need absorb heat, can produce a large amount of comdenstions water on the outer wall of gas transmission pipeline 41, scrape the water structure and scrape the back with the comdenstion water, flow down the comdenstion water around heat preservation 22 through guiding gutter 221 and helicla flute 222, the comdenstion water temperature is low, plays the cooling effect to heat preservation 22, can reduce the interior outer difference in temperature of holding vessel simultaneously, plays the guard action to inner tank 21, and the final comdenstion water is derived through the guiding duct.
Be provided with case 441 in the three-way valve, the lower extreme of case is connected with long pivot 442, and long pivot is located the hybrid tube, and the lower extreme of long pivot and hybrid tube's lower extreme swing joint, fixedly connected with shutoff piece 443 in the pipeline mouth's that is close to the feed liquor pipeline position in the long pivot, shutoff piece and hybrid tube's lower inner wall rotate to be connected.
Specifically, the upper and lower both sides of the outer wall of plugging block all are provided with spacing slider 444, are provided with two annular spacing spouts 445 on the lower inner wall of hybrid pipeline, and the sliding connection that spacing slider corresponds is in spacing spout to be connected the plugging block with the hybrid pipeline rotation.
When the valve core rotates to communicate the mixing pipeline with the overflow pipeline, the pipeline opening of the liquid inlet pipeline can be plugged by the plugging block;
when the valve core rotates to connect the mixing pipeline and the gas pipeline, the blocking block is moved away from the pipeline outlet of the liquid inlet pipeline.
The upper inner wall of the mixing pipeline is provided with a helical blade 432, the helical blade surrounds the upper part of the long rotating shaft, and a round hole 433 is formed in the joint of the lower end of the helical blade and the mixing pipeline.
The lower extreme of hybrid pipeline is seal structure, and the lower extreme of hybrid pipeline is provided with air inlet dish 431, and the air inlet has been seted up to a week equidistance of air inlet dish, and the air inlet communicates with hybrid pipeline.
The lower end of the liquid inlet pipeline extends to the bottom of the inner tank.
One side of natural gas storage jar is provided with natural gas line 211, and natural gas line can extend in the natural gas storage jar.
When natural gas is stored, liquefied natural gas enters the inner tank 21 through the natural gas pipeline 211, and the heat insulation layer 22 insulates heat of the inner tank 21.
The general working flow of the invention is as follows:
when the natural gas is stored, the three-way valve 44 is adjusted to the mixing pipeline 43 to be communicated with the overflow pipeline 42, the long rotating shaft drives the plugging block 443 to rotate to the pipeline opening of the liquid inlet pipeline 45, the pipeline opening of the liquid inlet pipeline is plugged by the plugging block, the vaporized natural gas in the natural gas storage tank enters the mixing pipeline 43 through the air inlet disc 431 and enters the heat exchanger 3 through the overflow pipeline 42, the heat exchanger 3 cools the vaporized natural gas until the natural gas returns to be liquid, and the cryogenic pump 32 sends the liquid natural gas to the inner tank 21 through the reinjection pipeline 31.
When the natural gas is required to be output for use, the three-way valve 44 is adjusted to control the mixed pipeline 43 to be communicated with the gas transmission pipeline 41, at the moment, the long rotating shaft drives the plugging block 443 to rotate so as to move away from the pipeline opening of the liquid inlet pipeline 45, and the gas transmission pipeline 41 can be connected with a delivery pump to output the gaseous natural gas outwards; the vaporized natural gas enters the mixing pipeline 43 through the air inlet disc 431, when the natural gas passes through the joint of the liquid inlet pipeline 45 and the mixing pipeline 43, the natural gas in the mixing pipeline 43 is less in throughput due to the existence of the blocking block 443, the flow rate of the natural gas is increased, the liquid natural gas is absorbed into the liquid inlet pipeline 45 by utilizing the siphon principle, the liquid natural gas and the gaseous natural gas are mixed in the mixing pipeline 43, the liquid natural gas is further vaporized, the gas-liquid mixed natural gas generates a certain centrifugal force under the guidance of the spiral blades 432, and the unvaporized natural gas is collected and returns to the inner tank 21 through the round hole 435; gas transmission pipeline 41 can produce a large amount of comdenstions water on the outer wall when carrying the natural gas, the air current of the intraductal natural gas of gas transmission pipeline 41 can drive two rotatory rings 412 rotatoryly after passing through function board 415, follow the rotation with two cover collars 413 of rotatory ring 412 actuation, thereby it rotates to drive the arc and scrape the water board, arc is scraped the water board 416 and is rotated around gas transmission pipeline 41, scrape the condensation water droplet on the gas transmission pipeline 41, accelerate gas transmission pipeline 41 heat absorption, improve the vaporization effect of natural gas, the comdenstion water of scraping down flows down around heat preservation 22 through guiding gutter 221 and helicla flute 222, the comdenstion water temperature is low, play the cooling effect to heat preservation 22, can reduce the inside and outside difference in temperature of holding vessel simultaneously, play the guard action to inner tank 21, the comdenstion water is derived through the guiding duct at last.
In conclusion: the natural gas liquefaction storage output device is provided with a vaporization output device 4, a gas transmission pipeline 41, an overflow pipeline 42 and a mixing pipeline 43 are connected by utilizing a three-way valve 44, the three-way valve 44 is rotated to control the communication of the mixing pipeline 43 and the gas transmission pipeline 41 or the overflow pipeline 42, and a plugging block 443 is connected on the three-way valve 44, so that the switching of functions of liquefaction storage and vaporization output is realized, the use is convenient, and the structure is compact; in the process of liquefaction and storage, the overflow pipeline 42 is connected with the heat exchanger 3, so that the vaporized natural gas can be cooled to be liquefied and is reinjected into the inner tank 21, the pressure change in the inner tank 21 is prevented, and the storage safety is improved; in the process of vaporization output, the natural gas mixed with gas and liquid is input into the gas transmission pipeline 41 by using the mixing pipeline 43, the plugging block 443 is arranged in the mixing pipeline 43, and the siphon principle is used for avoiding that the liquefied natural gas in the inner tank 21 is not used thoroughly enough to cause unnecessary waste; the movable rotating ring is arranged in the gas transmission pipeline 41, the functional plate is driven by the airflow of the natural gas to be matched with the water scraping device 413 for use, condensed water drops on the gas transmission pipeline 41 can be quickly scraped, the outer wall of the gas transmission pipeline 41 is prevented from being frozen, the heat absorption of the gas transmission pipeline 41 is accelerated, and the vaporization effect of the natural gas is improved; the condensed water flows down around the heat-insulating layer 22 through the water chute 221 and the spiral groove 222, the temperature of the condensed water is low, the heat-insulating layer 22 is cooled, the temperature difference between the inside and the outside of the storage tank can be reduced, and the inner tank 21 is protected.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A natural gas liquefaction stores output device which characterized in that: the device comprises a device base, wherein a natural gas storage tank and a heat exchanger are arranged on the upper surface of the device base, damping moving wheels are arranged at four corners of the bottom of the device base, the natural gas storage tank comprises an inner tank and a heat insulation layer, and a vaporization output device is arranged at the top of the natural gas storage tank;
the vaporization output device comprises a gas transmission pipeline, an overflow pipeline, a mixing pipeline and a three-way valve, the three-way valve is fixed at the top of the natural gas storage tank, the gas transmission pipeline, the overflow pipeline and the mixing pipeline are all connected to the three-way valve, a control valve is arranged at the bottom of the gas transmission pipeline, a water scraping structure is arranged at the upper part of the gas transmission pipeline, the other end of the overflow pipeline is connected with a heat exchanger, the bottom of the mixing pipeline extends into the inner tank, and a liquid inlet pipeline is fixedly connected to the lower side part of the mixing pipeline;
the bottom of the heat exchanger is connected with a reinjection pipeline, the output end of the reinjection pipeline is communicated with the inner tank, and a low-temperature pump is arranged on the reinjection pipeline.
2. The lng storage export facility of claim 1, wherein: the water scraping structure comprises two rotating rings and two sleeving rings, the rotating rings are arranged inside the gas transmission pipeline, two annular sliding grooves are formed in the gas transmission pipeline at intervals, a sliding ring is arranged on the outer wall of the middle of each rotating ring and can be rotatably connected in the sliding grooves, the rotating rings are in one-to-one corresponding sliding connection with the sliding grooves, the rotating rings are made of magnetic materials, and a plurality of inclined functional plates are arranged inside the rotating rings;
the cup jointing ring is sleeved on the outer wall of the gas transmission pipeline, the cup jointing ring corresponds to the rotating rings one by one, each rotating ring corresponds to one of the gas transmission pipelines at the position of the cup jointing ring, an iron sheet is embedded in each cup jointing ring, each cup jointing ring is connected with the corresponding rotating ring in a suction mode through the iron sheet, an arc-shaped water scraping plate is connected between the two cup jointing rings, and the arc-shaped water scraping plates are attached to the outer wall of the gas transmission pipeline.
3. The lng storage export facility of claim 2, wherein: when two rotatory rings rotate, drive two and cup joint the synchronous rotations of ring, and then drive the rotation of arc wiper blade, the arc wiper blade can be scraped the drop of water on the gas transmission pipeline.
4. The lng storage export facility of claim 1, wherein: the heat preservation of gas transmission pipeline below has seted up the guiding gutter on, is provided with the helicla flute on the lateral wall of heat preservation, and the one end of guiding gutter is connected with the upper end of helicla flute, and the lower extreme of helicla flute is provided with water piping.
5. The lng storage export facility of claim 1, wherein: the three-way valve is internally provided with a valve element, the lower end of the valve element is connected with a long rotating shaft, the long rotating shaft is positioned in a mixing pipeline, the lower end of the long rotating shaft is movably connected with the lower end of the mixing pipeline, a plugging block is fixedly connected to the position, close to a pipeline opening of a liquid inlet pipeline, of the long rotating shaft, and the plugging block is rotatably connected with the lower inner wall of the mixing pipeline.
6. The natural gas liquefied storage and output device according to claim 5, wherein: the upper side and the lower side of the outer wall of the blocking block are both provided with limiting sliding blocks, the lower inner wall of the mixing pipeline is provided with two annular limiting sliding grooves, and the limiting sliding blocks are correspondingly connected in the limiting sliding grooves in a sliding manner, so that the blocking block is rotationally connected with the mixing pipeline;
when the valve core rotates to communicate the mixing pipeline with the overflow pipeline, the pipeline opening of the liquid inlet pipeline can be plugged by the plugging block;
when the valve core rotates to communicate the mixing pipeline with the gas pipeline, the plugging block is moved away from the pipeline outlet of the liquid inlet pipeline.
7. The natural gas liquefied storage and output device according to claim 5, wherein: the spiral blades are arranged on the upper inner wall of the mixing pipeline and surround the upper part of the long rotating shaft, and round holes are formed in the connection positions of the lower ends of the spiral blades and the mixing pipeline.
8. The lng storage export facility of claim 1, wherein: the lower extreme of hybrid pipeline is seal structure, and the lower extreme of hybrid pipeline is provided with the air inlet dish, and the equidistant air inlet of having seted up of a week of air inlet dish, air inlet and hybrid pipeline intercommunication.
9. The lng storage and export facility of claim 1, wherein: the lower extreme of feed liquor pipeline extends to the bottom of inner tank.
10. The lng storage and export facility of claim 1, wherein: one side of natural gas storage jar is provided with natural gas line, natural gas line can extend in the natural gas storage jar.
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Cited By (1)
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| CN114704769B (en) | 2023-06-23 |
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