CN114508898A - Chemical industry is with cold box precooling equipment of natural gas liquefaction - Google Patents
Chemical industry is with cold box precooling equipment of natural gas liquefaction Download PDFInfo
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- CN114508898A CN114508898A CN202210097772.6A CN202210097772A CN114508898A CN 114508898 A CN114508898 A CN 114508898A CN 202210097772 A CN202210097772 A CN 202210097772A CN 114508898 A CN114508898 A CN 114508898A
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- Prior art keywords
- fixedly connected
- pipe
- cold box
- pipeline
- box
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003345 natural gas Substances 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 title claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 26
- 230000001681 protective effect Effects 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 238000005057 refrigeration Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 241000883990 Flabellum Species 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/62—Liquefied natural gas [LNG]; Natural gas liquids [NGL]; Liquefied petroleum gas [LPG]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention relates to a precooling device, in particular to a chemical cold box precooling device for liquefying natural gas. The technical problem is as follows: the utility model provides a chemical industry is with cold box precooling equipment of natural gas liquefaction which can not influence the environment. A chemical natural gas liquefaction cold box precooling device comprises a cold box and an air inlet pipe, wherein the air inlet pipe is fixedly connected to the lower part of one side of the cold box; the mounting seat is fixedly connected to one side of the inner wall of the cold box, and the air inlet pipe is fixedly connected with the mounting seat; the compressor is installed on the installation seat. The filtering mechanism can filter air, so that dust in the air is prevented from entering the compressor, the compressor can cool the air, the heat exchange mechanism can also cool the air, the environment in the cold box is refrigerated, the water cooling mechanism can cool redundant hot air, the redundant hot air is prevented from being directly discharged to the outside, and the environment is prevented from being influenced.
Description
Technical Field
The invention relates to a precooling device, in particular to a chemical cold box precooling device for liquefying natural gas.
Background
The natural gas is natural gas in nature, has characteristics such as colorless, tasteless, nontoxic, in the chemical industry field, can often use the liquefied natural gas cold box to carry out the heat exchange to natural gas and cryogen, and present liquefied natural gas cold box can produce some unnecessary steam in the cooling process, but present liquefied natural gas cold box does not have the function of collecting unnecessary steam, and the direct external world of discharging of unnecessary steam to cause certain pollution to the environment.
Aiming at the existing problems, a device which does not influence the environment is designed.
Disclosure of Invention
In order to overcome the function that present liquefied natural gas cold box does not collect unnecessary steam, the external world of unnecessary steam direct discharge to cause the shortcoming of certain pollution to the environment, the technical problem is: the utility model provides a chemical industry is with cold box precooling equipment of natural gas liquefaction which can not influence the environment.
The technical scheme is as follows: a chemical industry is with cold box precooling equipment of natural gas liquefaction, including:
the air inlet pipe is fixedly connected to the lower part of one side of the cold box;
the mounting seat is fixedly connected to one side of the inner wall of the cold box, and the air inlet pipe is fixedly connected with the mounting seat;
the compressor is mounted on the mounting seat;
the first pipeline is fixedly connected to the compressor;
the filtering mechanism is arranged on one side, close to the air inlet pipe, of the cold box;
the heat exchange mechanism is arranged on the first pipeline;
the number of the first exhaust pipes is two, the first exhaust pipes are fixedly connected to one side, far away from the air inlet pipe, of the cold box, and the first exhaust pipes are connected with the heat exchange mechanism;
and the water cooling mechanism is arranged on one side, close to the first exhaust pipe, of the cold box.
Further, the filtering mechanism comprises:
at least two fixing frames are fixedly connected to one side, close to the air inlet pipe, of the cold box;
the outer protective frame is fixedly connected between the fixing frames;
the two sides in the outer protective frame are fixedly connected with the first springs;
the mounting plate is fixedly connected between the first springs;
at least two filter cylinders are arranged and are embedded on the mounting plate;
the two sides of the bottom in the outer protective frame are fixedly connected with the second springs;
the movable plate is fixedly connected between the second springs;
the lower sides of the filter cylinders are fixedly connected with telescopic pipes which penetrate through the movable plate;
the upper parts of the extension tubes are provided with third springs, and two ends of each third spring are respectively connected with the filter cylinder and the movable plate;
the connecting pipe is fixedly connected between the telescopic pipes and fixedly connected with the air inlet pipe.
Further, heat transfer mechanism is including:
a liquid container installed at an upper side of the cold box;
a circulation pump installed at an upper side of the liquid container;
at least two second pipelines are arranged on two sides of the liquid container respectively and penetrate through the cold box;
the lower ends of the second pipelines are fixedly connected with gas tanks, the gas tanks are fixedly connected with the first pipeline, and the gas tanks are fixedly connected with the first exhaust pipe;
the heat exchange tubes are arranged in the air tanks and fixedly connected with the second pipeline;
and the circulating pipe is arranged between the heat exchange pipes and penetrates through the air tank.
Further, the water cooling mechanism includes:
the base is fixedly connected to one side, close to the first exhaust pipe, of the cold box;
the cooling box is arranged on the upper side of the base, and the first exhaust pipe is fixedly connected with the cooling box;
the second exhaust pipe is fixedly connected to one side of the cooling box;
the spraying pipe is fixedly connected to one side, close to the second exhaust pipe, of the cooling box;
the first support is fixedly connected to the inner wall of the cooling box;
the heat dissipation motor is arranged on the first support;
the first fan blade is arranged on an output shaft of the heat dissipation motor.
Further, still including refrigerating mechanism, refrigerating mechanism is including:
a pressure vessel installed outside the circulation pipe;
the third pipeline is fixedly connected to one side of the pressure container;
the condensation pipeline is fixedly connected to one side of the third pipeline and fixedly connected with the pressure container;
the fourth pipeline is fixedly connected to the upper part of the third pipeline;
the liquid nitrogen container is fixedly connected to one side of the fourth pipeline;
the refrigeration pipeline is fixedly connected to the upper end of the third pipeline;
the first fixing block is arranged in the third pipeline;
the pushing block is arranged in the middle of the first fixing block in a sliding mode and matched with the third pipeline;
the fourth spring is fixedly connected in the third pipeline;
the plugging block is fixedly connected to the lower end of the fourth spring and matched with the fourth pipeline.
Further, still including rocking the mechanism, rock the mechanism including:
the collecting box is fixedly connected to one side of the outer protective frame;
the second support is fixedly connected to the inner wall of the collecting box;
the dust removal motor is arranged in the second bracket, and an output shaft of the dust removal motor penetrates through the collection box;
the sensor is arranged on one filter cylinder, the sensor is also arranged on the upper part of the inner wall of the outer protective frame, and the sensor is electrically connected with the dust removal motor;
at least two mounting racks are fixedly connected to the upper part of the inner wall of the outer protection frame, and the filter cartridge penetrates through the mounting racks;
the outer sides of the mounting frames are provided with at least three elastic blocks in a sliding manner;
each elastic block is provided with a fifth spring, and two ends of each fifth spring are respectively connected with the elastic block and the mounting frame;
the disc is fixedly connected to an output shaft of the dust removal motor;
a connecting rod, the connecting rod rotary type is connected the downside of disc, the connecting rod with the fly leaf rotary type is connected.
Further, still including dust removal mechanism, dust removal mechanism is including:
the connecting pipe is fixedly connected to one side of each filter cylinder and penetrates through the collecting box;
the connecting blocks are fixedly connected among the connecting pipes, and the second support is positioned in the connecting blocks;
the second fixed block is fixedly connected to one side, close to the collecting box, of the outer protective frame, and an output shaft of the dust removal motor penetrates through the second fixed block;
the filter screen is fixedly connected to the upper side of the second fixed block;
and the second fan blade is fixedly connected to the output shaft of the dust removal motor and is positioned in the second fixed block.
Furthermore, through holes for ventilation are uniformly arranged on the first fixing block at intervals.
The invention has the beneficial effects that:
1. the filtering mechanism can filter air, so that dust in the air is prevented from entering the compressor, the compressor can cool the air, the heat exchange mechanism can also cool the air, the environment in the cold box is refrigerated, the water cooling mechanism can cool redundant hot air, the redundant hot air is prevented from being directly discharged to the outside, and the environment is prevented from being influenced.
2. The refrigerating mechanism can carry out secondary refrigeration on the environment in the cold box, so that the environment in the cold box is always kept in a cold state.
3. Under the cooperation of the shaking mechanism and the dust removal mechanism, the dust collection device can collect dust entering the filter cylinder, avoid excessive dust accumulation in the filter cylinder and avoid filter cylinder blockage.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a partial cross-sectional view of the present invention.
Fig. 3 is a sectional view of the filter mechanism and the dust removing mechanism of the present invention.
FIG. 4 is a cross-sectional view of a first portion of the rocking mechanism of the present invention.
FIG. 5 is a cross-sectional view of a second portion of the rocking mechanism of the present invention.
FIG. 6 is a cross-sectional view of a third portion of the rocking mechanism of the present invention.
FIG. 7 is a schematic view of a first partial body structure of the dust removing mechanism of the present invention.
FIG. 8 is a schematic structural view of a second partial body of the dust removing mechanism of the present invention.
Fig. 9 is a cross-sectional view of the heat exchange mechanism of the present invention.
Fig. 10 is a schematic perspective view of the refrigeration mechanism of the present invention.
Fig. 11 is a cross-sectional view of a first portion of the refrigeration mechanism of the present invention.
Fig. 12 is a cross-sectional view of a second portion of the refrigeration mechanism of the present invention.
Fig. 13 is a cross-sectional view of a third portion of the refrigeration mechanism of the present invention.
Fig. 14 is a schematic perspective view of the water cooling mechanism of the present invention.
Fig. 15 is a partial perspective view of the water cooling mechanism of the present invention.
Part names and serial numbers in the figure: 1_ cold box, 2_ inlet pipe, 3_ mounting seat, 4_ compressor, 5_ first pipe, 6_ filtering mechanism, 61_ fixed frame, 62_ outer protective frame, 63_ mounting plate, 64_ first spring, 65_ filter cartridge, 66_ movable plate, 67_ second spring, 68_ third spring, 69_ telescopic pipe, 610_ communicating pipe, 7_ heat exchanging mechanism, 71_ liquid container, 72_ circulating pump, 73_ second pipe, 74_ gas tank, 75_ heat exchanging pipe, 76_ circulating pipe, 8_ first exhaust pipe, 9_ refrigerating mechanism, 91_ pressure container, 92_ third pipe, 93_ condensing pipe, 94_ liquid nitrogen container, 95_ fourth pipe, 96_ refrigerating pipe, 97_ first fixed block, 98_ push block, 99_ fourth spring, 910_ block, 10_ water cooling mechanism, 1001_ base, 1002_ cold box, 1003_ second exhaust pipe, 1004_ spray pipe, 1005_ first support, 1006_ heat dissipation motor, 1007_ first fan blade, 11_ shaking mechanism, 1101_ collecting box, 1102_ second support, 1103_ dust removal motor, 1104_ inductor, 1105_ mounting bracket, 1106_ elastic block, 1107_ fifth spring, 1108_ disc, 1109_ connecting rod, 12_ dust removal mechanism, 1201_ connecting pipe, 1202_ communicating block, 1203_ second fixing block, 1204_ filter screen, 1205_ second fan blade.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Example 1
A cold box precooling device for liquefying natural gas for chemical engineering, which is shown in figure 1, figure 2, figure 3, figure 4, figure 5, figure 6, figure 7 and figure 9, fig. 14 and fig. 15 show, including cold box 1, intake pipe 2, mount pad 3, compressor 4, first pipeline 5, filtering mechanism 6, heat transfer mechanism 7, first exhaust pipe 8 and water-cooling mechanism 10, 1 left side sub-unit connection of cold box has intake pipe 2, the left side is connected with mount pad 3 in the cold box 1, intake pipe 2 and 3 bottom of mount pad are connected, 3 right sides of mount pad are connected with compressor 4, 4 right sides of compressor are connected with first pipeline 5, 1 left side lower part of cold box is equipped with filtering mechanism 6, be equipped with heat transfer mechanism 7 on the first pipeline 5, both sides all are connected with first exhaust pipe 8 around 1 right side upper portion of cold box, two first exhaust pipes 8 all are connected with heat transfer mechanism 7, 1 right side of cold box is equipped with water-cooling mechanism 10.
The filtering mechanism 6 comprises a fixed frame 61, an outer protective frame 62, a mounting plate 63, a first spring 64, a filter cartridge 65, a movable plate 66, a second spring 67, a third spring 68, telescopic pipes 69 and a communicating pipe 610, wherein the fixed frame 61 is connected with the front side and the rear side of the left side of the cold box 1, the outer protective frame 62 is connected between the two fixed frames 61, the first spring 64 is connected with the front side and the rear side of the upper part of the inner right side of the outer protective frame 62, the mounting plate 63 is connected between the two first springs 64, the two filter cartridges 65 are embedded and installed on the mounting plate 63, the front side and the rear side of the inner bottom of the outer protective frame 62 are connected with the two second springs 67, the movable plate 66 is connected between the top ends of the four second springs 67, the telescopic pipes 69 are connected with the bottom of the two filter cartridges 65, the two telescopic pipes 69 pass through the movable plate 66, the third springs 68 are arranged on the upper parts of the two telescopic pipes 69, and the two ends of the third springs 68 are respectively connected with the filter cartridges 65 and the movable plate 66, a communicating pipe 610 is connected between the bottom ends of the two extension pipes 69, and the communicating pipe 610 is connected with the air inlet pipe 2.
The heat exchange mechanism 7 comprises a liquid container 71, a circulating pump 72, second pipelines 73, gas tanks 74, heat exchange tubes 75 and circulating tubes 76, the liquid container 71 is connected to the middle of the top of the cold box 1, the circulating pump 72 is mounted on the top of the liquid container 71 through bolts, the second pipelines 73 are connected to the front side and the rear side of the liquid container 71, the two second pipelines 73 penetrate through the top of the cold box 1, the gas tanks 74 are connected to the bottom ends of the two second pipelines 73, the two gas tanks 74 are connected to the first pipeline 5, the two gas tanks 74 are connected to the two first exhaust pipes 8 respectively, the heat exchange tubes 75 are mounted in the two gas tanks 74, the two heat exchange tubes 75 are connected to the two second pipelines 73 respectively, the circulating tubes 76 are connected between the two heat exchange tubes 75, and the circulating tubes 76 penetrate through the bottoms of the gas tanks 74.
The water cooling mechanism 10 comprises a base 1001, a cooling box 1002, a second exhaust pipe 1003, a spray pipe 1004, a first support 1005, a heat dissipation motor 1006 and first fan blades 1007, the right side of the cooling box 1 is connected with the base 1001, the top of the base 1001 is connected with the cooling box 1002, the right ends of the two first exhaust pipes 8 are connected with the left side of the cooling box 1002, the lower portion of the right side of the cooling box 1002 is connected with the second exhaust pipe 1003, the upper portion of the right side of the cooling box 1002 is connected with the spray pipe 1004, the upper portion of the interior of the cooling box 1002 is connected with the first support 1005, the heat dissipation motor 1006 is installed in the middle of the first support 1005, and the output shaft of the heat dissipation motor 1006 is connected with the first fan blades 1007.
People lead the natural gas pipeline to pass through the cold box 1, the liquid container 71, the second pipeline 73, the heat exchange pipe 75 and the circulating pipe 76 are filled with cooling liquid, people start the compressor 4, outside air enters the filter cartridge 65, the filter cartridge 65 filters dust in the air to prevent the dust in the air from entering the compressor 4, the filtered air flows into the air inlet pipe 2 through the extension pipe 69 and then flows into the compressor 4 through the mounting seat 3, the compressor 4 cools the air to refrigerate the environment in the cold box 1, the air flows into the air tank 74 through the first pipeline 5, at the moment, people start the circulating pump 72, the cooling liquid flows back and forth in the liquid container 71, the second pipeline 73, the heat exchange pipe 75 and the circulating pipe 76 to cool the air in the air tank 74 to refrigerate the environment in the cold box 1, and redundant hot air is discharged through the first exhaust pipe 8, in discharging into cooler bin 1002, people are with the external water source of shower 1004, water spouts cooler bin 1002 through shower 1004 in, cool off, then start heat dissipation motor 1006, heat dissipation motor 1006 drives first flabellum 1007 and rotates, cool off, gas after the cooling is discharged through second blast pipe 1003, avoid unnecessary steam directly to discharge to the external world, avoid influencing the environment, compressor 4 has stronger absorptive capacity to the air in external world, so when external air gets into and strains a section of thick bamboo 65, it can rock to strain a section of thick bamboo 65, first spring 64, second spring 67 and third spring 68 can play the cushioning effect to straining a section of thick bamboo 65, when need not using, people close heat dissipation motor 1006, compressor 4 and circulating pump 72.
Example 2
On the basis of embodiment 1, as shown in fig. 3, 4, 5, 6, 7, 8, 10, 11, 12 and 13, the refrigeration device 9 further comprises a refrigeration mechanism 9, wherein the refrigeration mechanism 9 comprises a pressure container 91, a third pipeline 92, a condensation pipeline 93, a liquid nitrogen container 94, a fourth pipeline 95, a refrigeration pipeline 96, a first fixed block 97, a push block 98, a fourth spring 99 and a block 910, the pressure container 91 is installed outside the circulating pipe 76, the third pipeline 92 is connected to the right middle portion of the pressure container 91, the condensation pipeline 93 is connected to the left side of the third pipeline 92, the bottom end of the condensation pipeline 93 is connected to the top of the pressure container 91, the fourth pipeline 95 is connected to the upper portion of the third pipeline 92, the refrigeration pipeline 96 is connected to the top end of the third pipeline 92, the liquid nitrogen container 94 is connected to the left end of the fourth pipeline 95, the first fixed blocks 97 are arranged in the third pipeline 92, through holes for ventilation are uniformly spaced on the first fixed blocks 97, the middle of the first fixing block 97 is slidably provided with a push block 98, the push block 98 is matched with the third pipeline 92, the upper part of the third pipeline 92 is connected with a fourth spring 99, the bottom end of the fourth spring 99 is connected with a block 910, and the block 910 is matched with the fourth pipeline 95.
The purified water is filled in the pressure container 91, a certain pressure is arranged in the pressure container 91, the boiling point of the purified water in the pressure container 91 is very low, the purified water in the pressure container 91 is easy to boil, when the cooling liquid flows back and forth in the liquid container 71, the second pipeline 73, the heat exchange tube 75 and the circulating tube 76, certain heat is generated, the purified water in the pressure container 91 boils to generate water vapor, the water vapor enters the third pipeline 92, the water vapor pushes the push block 98 to move upwards through the through hole on the first fixing block 97, when the push block 98 moves into the fourth pipeline 95, the water vapor flows into the liquid nitrogen container 94 through the fourth pipeline 95, the liquid nitrogen in the liquid nitrogen container 94 cools the water vapor, meanwhile, the push block 98 pushes the block 910 to move upwards, the fourth spring 99 compresses, a part of the water vapor flows into the refrigerating pipeline 96, the refrigerating pipeline 96 cools the water vapor, and thus the environment in the cold box 1 can be secondarily refrigerated, the environment in the cold box 1 is kept cold all the time, the water vapor is attached to the third pipeline 92 and is converted into liquid, the liquefied water vapor flows back to the pressure container 91 through the condensation pipeline 93, when the cooling liquid in the liquid container 71, the second pipeline 73, the heat exchange pipe 75 and the circulating pipe 76 does not flow any more, no heat is generated, the push block 98 resets downwards under the action of self gravity, the blocking block 910 resets downwards under the action of the fourth spring 99, and the fourth pipeline 95 is blocked.
The dust removal device further comprises a shaking mechanism 11, the shaking mechanism 11 comprises a collection box 1101, a second support 1102, a dust removal motor 1103, an inductor 1104, a mounting frame 1105, elastic blocks 1106, a fifth spring 1107, a disc 1108 and a connecting rod 1109, the collection box 1101 is connected with the lower portion of the right side of the outer protection frame 62, the second support 1102 is connected with the top portion in the collection box 1101, the dust removal motor 1103 is installed in the second support 1102, an output shaft of the dust removal motor 1103 penetrates through the bottom portion of the collection box 1101, the inductor 1104 is installed on the upper portion of the right side of the front side 1107 65, the inductor 1104 is also installed on the upper portion of the inner right side of the outer protection frame 62, the inductor 1104 is electrically connected with the dust removal motor 1103, the two mounting frames 1105 are connected with the upper portion in the outer protection frame 62, the two filter cartridges 65 respectively penetrate through the two 1105, the three elastic blocks 1106 are slidably arranged on the outer sides of the two mounting frames 1105, each elastic block 1106 is provided with the fifth spring, two ends of the fifth spring are respectively connected with the elastic block 1106 and the mounting frame 1105, the bottom end of the output shaft of the dust removing motor 1103 is connected with a disc 1108, the left side of the bottom of the disc 1108 is rotatably connected with a connecting rod 1109, and the left end of the connecting rod 1109 is rotatably connected with the middle part of the right side of the movable plate 66.
Still including dust removal mechanism 12, dust removal mechanism 12 is including the connecting pipe 1201, intercommunication piece 1202, second fixed block 1203, filter screen 1204 and second flabellum 1205, two filter cartridge 65 right side lower parts all are connected with the connecting pipe 1201, two connecting pipes 1201 pass the front and back both sides of collecting box 1101 respectively, be connected with intercommunication piece 1202 between two connecting pipes 1201, second support 1102 is located intercommunication piece 1202, outer protective frame 62 right side sub-unit connection has second fixed block 1203, the output shaft of dust removal motor 1103 passes second fixed block 1203, second fixed block 1203 top is connected with filter screen 1204, second flabellum 1205 is installed on the output shaft upper portion of dust removal motor 1103, second flabellum 1205 is located second fixed block 1203.
People open the inductor 1104, the air entering the filter cartridge 65 flows into the communicating block 1202 through the connecting pipe 1201, the filter net 1204 can filter dust in the air, at the moment, the filter cartridge 65 shakes, the elastic block 1106 and the fifth spring 1107 buffer the filter cartridge 65, the two inductors 1104 are in opposite-emission dislocation, the dedusting motor 1103 starts to work, the dedusting motor 1103 drives the second fan blade 1205 to rotate, the second fan blade 1205 can blow off dust on the filter net 1204, the dust floats into the collecting box 1101, the dust entering the filter cartridge 65 is collected, excessive dust accumulated in the filter cartridge 65 is avoided, the filter cartridge 65 is prevented from being blocked, meanwhile, the dedusting motor 1103 drives the disc 1108 to rotate, the disc 1108 drives the movable plate 66 to move left and right through the connecting rod 1109, the movable plate 66 can shake the telescopic pipe 69, the filter cartridge 65 shakes, dust on the inner wall of the filter cartridge 65 is shaken off, and the dust in the filter cartridge can better enter the connecting pipe 1201, after the compressor 4 is turned off, air is no longer drawn into the filter cartridge 65 and the dedusting motor 1103 is turned off.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a chemical industry is with cold box precooling apparatus of natural gas liquefaction which characterized in that, including:
the air cooling system comprises a cooling box (1) and an air inlet pipe (2), wherein the air inlet pipe (2) is fixedly connected to the lower part of one side of the cooling box (1);
the mounting seat (3) is fixedly connected to one side of the inner wall of the cold box (1), and the air inlet pipe (2) is fixedly connected with the mounting seat (3);
the compressor (4), the said compressor (4) is installed on said mount pad (3);
the first pipeline (5), the said first pipeline (5) is affixed to the said compressor (4);
the filtering mechanism (6), the said filtering mechanism (6) is mounted to one side close to the said intake pipe (2) on the said cold box (1);
the heat exchange mechanism (7), the said heat exchange mechanism (7) is mounted on said first pipeline (5);
the number of the first exhaust pipes (8) is two, the two first exhaust pipes (8) are fixedly connected to one side, far away from the air inlet pipe (2), of the cold box (1), and the first exhaust pipes (8) are connected with the heat exchange mechanism (7);
the water cooling mechanism (10), the water cooling mechanism (10) install in be close to on the cold box (1) one side of first blast pipe (8).
2. A chemical industry natural gas liquefaction cold box precooling apparatus according to claim 1, wherein the filter mechanism (6) comprises:
at least two fixing frames (61) are fixedly connected to one side, close to the air inlet pipe (2), of the cold box (1);
the outer protective frame (62), the said outer protective frame (62) is fixed to between the said fixed mount (61);
the two sides inside the outer protective frame (62) are fixedly connected with the first springs (64);
the mounting plate (63), the said mounting plate (63) is affixed to between the said first springs (64);
at least two filter cartridges (65), wherein the filter cartridges (65) are embedded in the mounting plate (63);
the two sides of the inner bottom of the outer protective frame (62) are fixedly connected with the second springs (67);
a movable plate (66), wherein the movable plate (66) is fixedly connected between the second springs (67);
telescopic pipes (69), wherein the lower sides of the filter cartridges (65) are fixedly connected with the telescopic pipes (69), and the telescopic pipes (69) penetrate through the movable plate (66);
the upper parts of the telescopic pipes (69) are provided with third springs (68), and two ends of each third spring (68) are respectively connected with the filter cylinder (65) and the movable plate (66);
the air inlet pipe is characterized by comprising a communicating pipe (610), wherein the communicating pipe (610) is fixedly connected between the telescopic pipes (69), and the communicating pipe (610) is fixedly connected with the air inlet pipe (2).
3. A chemical industry natural gas liquefaction cold box precooling apparatus according to claim 2, wherein the heat exchange mechanism (7) comprises:
a liquid container (71), wherein the liquid container (71) is installed on the upper side of the cold box (1);
a circulation pump (72), the circulation pump (72) being mounted on an upper side of the liquid container (71);
at least two second pipelines (73), wherein the second pipelines (73) are respectively arranged at two sides of the liquid container (71), and the second pipelines (73) penetrate through the cold box (1);
the lower ends of the second pipelines (73) are fixedly connected with air tanks (74), the air tanks (74) are fixedly connected with the first pipeline (5), and the air tanks (74) are fixedly connected with the first exhaust pipe (8);
the heat exchange tubes (75) are mounted in the air tank (74), and the heat exchange tubes (75) are fixedly connected with the second pipeline (73);
a circulation pipe (76), the circulation pipe (76) being installed between the heat exchange pipes (75), the circulation pipe (76) passing through the gas tank (74).
4. A chemical natural gas liquefaction cold box precooling apparatus according to claim 3, wherein the water cooling mechanism (10) comprises:
the base (1001) is fixedly connected to one side, close to the first exhaust pipe (8), of the cold box (1);
the cooling box (1002), the said cooling box (1002) is installed on the upside of the said base (1001), the said first exhaust pipe (8) and said cooling box (1002) are fixedly connected;
a second exhaust pipe (1003), wherein the second exhaust pipe (1003) is fixedly connected to one side of the cooling box (1002);
the spray pipe (1004) is fixedly connected to one side, close to the second exhaust pipe (1003), of the cooling box (1002);
a first bracket (1005), wherein the first bracket (1005) is fixedly connected to the inner wall of the cooling box (1002);
a heat dissipation motor (1006), the heat dissipation motor (1006) being mounted on the first bracket (1005);
the fan comprises a first fan blade (1007), wherein the first fan blade (1007) is installed on an output shaft of the heat dissipation motor (1006).
5. The chemical industry natural gas liquefaction cold box precooling apparatus according to claim 4, further comprising a refrigeration mechanism (9), wherein the refrigeration mechanism (9) comprises:
a pressure vessel (91), the pressure vessel (91) being mounted outside the circulation pipe (76);
a third pipe (92), wherein the third pipe (92) is fixedly connected to one side of the pressure container (91);
the condensation pipeline (93), the condensation pipeline (93) is fixedly connected to one side of the third pipeline (92), and the condensation pipeline (93) is fixedly connected with the pressure container (91);
a fourth pipe (95), wherein the fourth pipe (95) is fixedly connected to the upper part of the third pipe (92);
the liquid nitrogen container (94), the said liquid nitrogen container (94) is affixed to one side of the said fourth pipeline (95);
the refrigeration pipeline (96), the said refrigeration pipeline (96) is affixed to the upper end of the said third pipeline (92);
a first fixed block (97), the first fixed block (97) being disposed within the third conduit (92);
the pushing block (98) is arranged in the middle of the first fixing block (97) in a sliding mode, and the pushing block (98) is matched with the third pipeline (92);
a fourth spring (99), wherein the fourth spring (99) is fixedly connected in the third pipeline (92);
a block (910), the block (910) being fixedly connected to the lower end of the fourth spring (99), the block (910) being fitted with the fourth pipe (95).
6. The chemical industry natural gas liquefaction cold box precooling apparatus according to claim 5, further comprising a shaking mechanism (11), wherein the shaking mechanism (11) comprises:
a collecting box (1101), wherein the collecting box (1101) is fixedly connected to one side of the outer protective frame (62);
the second support (1102), the said second support (1102) is affixed to the inboard wall of the said collecting box (1101);
the dust removal motor (1103) is installed in the second support (1102), and an output shaft of the dust removal motor (1103) penetrates through the collection box (1101);
the dust removing device comprises inductors (1104), wherein one filter cylinder (65) is provided with the inductor (1104), the upper part of the inner wall of an outer protective frame (62) is also provided with the inductor (1104), and the inductor (1104) is electrically connected with a dust removing motor (1103);
at least two mounting frames (1105), wherein the at least two mounting frames (1105) are fixedly connected to the upper part of the inner wall of the outer protective frame (62), and the filter cartridge (65) passes through the mounting frames (1105);
the outer sides of the mounting frames (1105) are all provided with at least three spring blocks (1106) in a sliding manner;
each elastic block (1106) is provided with a fifth spring (1107), and two ends of each fifth spring (1107) are respectively connected with the elastic block (1106) and the mounting frame (1105);
the disc (1108), the disc (1108) is fixedly connected to the output shaft of the dust removing motor (1103);
connecting rod (1109), connecting rod (1109) rotary type is connected the downside of disc (1108), connecting rod (1109) with fly leaf (66) rotary type is connected.
7. The chemical natural gas liquefaction cold box precooling equipment as claimed in claim 6, further comprising a dedusting mechanism (12), wherein the dedusting mechanism (12) comprises:
the connecting pipe (1201) is fixedly connected to one side of the filter cartridge (65), and the connecting pipe (1201) penetrates through the collecting tank (1101);
a communication block (1202), the communication block (1202) being fixedly connected between the connection pipes (1201), the second bracket (1102) being located in the communication block (1202);
the second fixing block (1203), the second fixing block (1203) is fixedly connected to one side, close to the collecting box (1101), of the outer protective frame (62), and an output shaft of the dust removing motor (1103) penetrates through the second fixing block (1203);
the filter screen (1204), the said filter screen (1204) is affixed to the upside of the said second fixed block (1203);
second flabellum (1205), second flabellum (1205) rigid coupling in the output shaft of dust removal motor (1103), second flabellum (1205) is located in second fixed block (1203).
8. The chemical industry natural gas liquefaction cold box precooling apparatus as claimed in claim 5, wherein the first fixed block (97) is uniformly spaced with through holes for ventilation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN114508898B (en) | 2023-06-30 |
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