CN214950122U - Liquefied natural gas precooling apparatus - Google Patents
Liquefied natural gas precooling apparatus Download PDFInfo
- Publication number
- CN214950122U CN214950122U CN202121365888.0U CN202121365888U CN214950122U CN 214950122 U CN214950122 U CN 214950122U CN 202121365888 U CN202121365888 U CN 202121365888U CN 214950122 U CN214950122 U CN 214950122U
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- Prior art keywords
- precooling
- natural gas
- liquid
- pipe
- pump
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- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000003345 natural gas Substances 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 64
- 238000001816 cooling Methods 0.000 claims description 25
- 239000000110 cooling liquid Substances 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 239000005341 toughened glass Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a liquefied natural gas precooling apparatus, including the precooling case, be provided with the precooling coil pipe in the precooling case, the precooling coil pipe sets up from top to bottom, the precooling coil pipe has three and front and back evenly distributed, the top input of precooling coil pipe runs through the precooling case and is connected with feeding tee bend takeover, the bottom output of precooling coil pipe runs through the precooling case and is connected with ejection of compact tee bend takeover, the fixed first natural gas delivery pump that is provided with in top of precooling case, the output of first natural gas delivery pump passes through coupling hose and feeding tee bend takeover fixed connection, the input of first natural gas delivery pump is provided with the liquefied gas access port, the fixed second natural gas delivery pump that is equipped with in bottom of precooling case, the input and the ejection of compact tee bend takeover intercommunication of second natural gas delivery pump, the output of second natural gas delivery pump is provided with liquefied gas guide port, the output of second natural gas delivery pump still communicates the one end that has the circulation precooling pipe.
Description
Technical Field
The utility model relates to a natural gas field especially relates to a liquefied natural gas precooling apparatus.
Background
Liquefied natural gas, the main component of which is methane, is recognized as the cleanest fossil energy source on earth. The liquefied natural gas is colorless, tasteless, nontoxic and noncorrosive, the volume of the liquefied natural gas is about 1/625 of the volume of the same amount of gaseous natural gas, and the mass of the liquefied natural gas is only about 45 percent of the same volume of water.
When the conventional precooling device for the liquefied natural gas is used for precooling the liquefied natural gas, the precooling liquid for precooling the liquefied natural gas often has a great temperature difference with a precooling container for storing the liquefied natural gas, so that the manufacturing cost of the precooling liquid with extremely low temperature is very high, and the precooling container is very easy to crack due to the overlarge temperature difference.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a liquefied natural gas precooling apparatus can reduce the cost of low temperature precooling liquid when precooling liquefied gas, also avoids precooling liquid temperature to cross when low direct precooling simultaneously, and the surface difference in temperature of precooling coil pipe is too big and takes place to break.
In order to solve the technical problem, the utility model provides a following technical scheme: a liquefied natural gas precooling device comprises a precooling box, wherein a precooling coil is arranged in the precooling box, the precooling coil is arranged up and down, three precooling coils are uniformly distributed front and back, the top end input end of the precooling coil penetrates through the precooling box and is connected with a feeding tee joint pipe, the bottom end output end of the precooling coil penetrates through the precooling box and is connected with a discharging tee joint pipe, a first natural gas conveying pump is fixedly arranged at the top of the precooling box, the output end of the first natural gas conveying pump is fixedly connected with the feeding tee joint pipe through a connecting hose, the input end of the first natural gas conveying pump is provided with a liquefied gas access port, the bottom of the precooling box is fixedly provided with a second natural gas conveying pump, the input end of the second natural gas conveying pump is communicated with the discharging tee joint pipe, the output end of the second natural gas conveying pump is provided with a liquefied gas guide outlet port, and the output end of the second natural gas conveying pump is also communicated with one end of a circulating precooling pipe, the other end of the circulating pre-cooling pipe is communicated with the input end of the first natural gas conveying pump.
As an optimal technical scheme of the utility model, the fixed precooling liquid pump that is provided with in top of precooling case, the front end at the inside top of precooling case is fixed to be equipped with precooling liquid and sprays the board, and precooling liquid pump's output and precooling liquid spray the input intercommunication of board, the rear end of the inside bottom of precooling case is fixed to be equipped with precooling liquid and absorbs the board, precooling liquid absorbs the output of board and precooling liquid pump's input intercommunication, and precooling liquid sprays the output of board and is equipped with precooling liquid port and just to the precooling coil pipe, states precooling liquid and absorbs the input of board and is equipped with precooling liquid port and just to the precooling coil pipe.
As a preferred technical scheme of the utility model, the input of precooling liquid pump is fixedly connected with feed liquor end pipe still, and the intraductal feed liquor valve that is provided with of feed liquor end.
As a preferred technical scheme of the utility model, the output of precooling liquid pump is fixedly connected with flowing back end pipe still, is provided with the flowing back valve in the flowing back end pipe.
As an optimal technical scheme of the utility model, the bottom fixed mounting of precooling case has four supporting legs.
As a preferred technical scheme of the utility model, both ends are run through around the precooling case and have been seted up the opening and cover on the opening and install observation window 11.
As an optimized technical scheme of the utility model, the observation window is toughened glass multilayer vacuum heat insulation window.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
1. the method comprises the steps that non-precooled liquefied natural gas is connected to a liquefied gas access port of a first natural gas delivery pump, the first natural gas delivery pump is started to pump the liquefied natural gas into a precooling coil pipe in a precooling box to flow in a spiral mode, the liquefied natural gas is precooled through precooling liquid in the precooling box, the precooled liquefied natural gas is pumped back to the input end of the first natural gas delivery pump through a circulating precooling pipe through a second natural gas delivery pump, and then is precooled into the precooling box through the first natural gas delivery pump, and the liquefied natural gas is gradually cooled for multiple times through circulating precooling step by step, so that the cost of low-temperature precooling liquid during precooling of the liquefied natural gas can be reduced, and meanwhile, the phenomenon that the outer surface of the precooling coil pipe is cracked due to overlarge temperature difference when the precooling liquid temperature is too low and directly precooling is avoided;
2. through set up the precooling liquid pump at the top of precooling case, through the circulation flow of the precooling liquid of precooling case drive precooling liquid pump, make precooling liquid can from the top down fully water the precooling coil pipe to guarantee that the liquefied natural gas in the precooling coil pipe can obtain abundant precooling effect.
Drawings
FIG. 1 is a schematic diagram of a liquefied natural gas pre-cooling apparatus;
fig. 2 is a top perspective view of an lng precooling apparatus;
fig. 3 is a first bottom perspective view of an lng precooling apparatus;
fig. 4 is a second bottom perspective view of an lng precooling apparatus.
Wherein: 1. a drain valve; 2. a liquid discharge end pipe; 3. a liquefied gas access port; 4. a liquid inlet valve; 5. a liquid inlet end pipe; 6. a precooling liquid pump; 7. a pre-cooling liquid spray plate; 8. pre-cooling the coil pipe; 9. a pre-cooling box; 10. a pre-chilled liquid port; 11. an observation window; 12. supporting legs; 13. a first natural gas delivery pump; 14. a feeding three-way connecting pipe; 15. a pre-cooling fluid intake plate; 16. a second natural gas delivery pump; 17. a liquefied gas lead-out port; 18. a circulating pre-cooling pipe; 19. and a discharge three-way connecting pipe.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
the utility model provides a liquefied natural gas precooling device, including precooling tank 9, be provided with precooling coil 8 in precooling tank 9, precooling coil 8 sets up from top to bottom, precooling coil 8 has three and front and back evenly distributed, precooling coil 8's top input end runs through precooling tank 9 and is connected with feed tee coupling pipe 14, precooling coil 8's bottom output end runs through precooling tank 9 and is connected with ejection of compact tee coupling pipe 19, precooling tank 9's top is fixed and is provided with first natural gas delivery pump 13, the output of first natural gas delivery pump 13 passes through coupling hose and feed tee coupling pipe 14 fixed connection, the input of first natural gas delivery pump 13 is provided with liquefied gas access port 3, precooling tank 9's bottom is fixed and is equipped with second natural gas delivery pump 16, the input of second natural gas delivery pump 16 and ejection of compact tee coupling pipe 19 intercommunication, the output of second natural gas delivery pump 16 is provided with liquefied gas derivation port 17, the output end of the second natural gas conveying pump 16 is also communicated with one end of a circulating pre-cooling pipe 18, and the other end of the circulating pre-cooling pipe 18 is communicated with the input end of the first natural gas conveying pump 13;
when the liquefied natural gas precooling device is used, the liquefied natural gas which is not precooled is connected to the liquefied gas access port 3 of the first natural gas delivery pump 13, meanwhile, the first natural gas delivery pump 13 is started to pump the liquefied natural gas into the pre-cooling coil 8 in the pre-cooling box 9 to flow in a spiral mode, the liquefied natural gas is pre-cooled by the pre-cooling liquid in the pre-cooling box 9, the pre-cooled liquefied natural gas is pumped back to the input end of the first natural gas delivery pump 13 through the circulating pre-cooling pipe 18 by the second natural gas delivery pump 16 and then is pumped into the pre-cooling box 9 for pre-cooling by the first natural gas delivery pump 13, the gradual cooling of the liquefied natural gas is realized by carrying out gradual multiple circulating precooling on the liquefied natural gas, therefore, the cost of low-temperature precooling liquid during precooling of liquefied gas can be reduced, and the situation that the temperature difference of the outer surface of the precooling coil 8 is too large to crack when the precooling liquid is cooled too low and directly precooled is avoided.
In another embodiment, a pre-cooling liquid pump 6 is fixedly arranged at the top of the pre-cooling tank 9, a pre-cooling liquid spray plate 7 is fixedly arranged at the front end of the top inside the pre-cooling tank 9, the output end of the pre-cooling liquid pump 6 is communicated with the input end of the pre-cooling liquid spray plate 7, a pre-cooling liquid absorption plate 15 is fixedly arranged at the rear end of the bottom inside the pre-cooling tank 9, the output end of the pre-cooling liquid absorption plate 15 is communicated with the input end of the pre-cooling liquid pump 6, a pre-cooling liquid port 10 is arranged at the output end of the pre-cooling liquid spray plate 7 and is opposite to the pre-cooling coil 8, and a pre-cooling liquid port 10 is arranged at the input end of the pre-cooling liquid absorption plate 15 and is opposite to the pre-cooling coil 8;
through set up precooling liquid pump 6 at the top of precooling case 9, through the circulation flow of precooling liquid of precooling case 9 of precooling liquid pump 6 drive, make precooling liquid can from the top down fully water precooling coil 8 to guarantee that the liquefied natural gas in precooling coil 8 can obtain abundant precooling effect.
In another embodiment, the input end of the pre-cooling liquid pump 6 is also fixedly connected with a liquid inlet end pipe 5, and a liquid inlet valve 4 is arranged in the liquid inlet end pipe 5;
the output end of the precooling liquid pump 6 is connected with the liquid inlet end pipe 5, so that precooling liquid in the precooling box 9 can be supplemented in time.
In another embodiment, the output end of the pre-cooling liquid pump 6 is also fixedly connected with a liquid discharge end pipe 2, and a liquid discharge valve 1 is arranged in the liquid discharge end pipe 2;
the liquid discharge end pipe 2 is connected to the input end of the pre-cooling liquid pump 6, so that pre-cooling liquid with poor effect after long-term use can be discharged in time.
In another embodiment, four support legs 12 are fixedly mounted at the bottom of the pre-cooling tank 9;
the supporting legs 12 are arranged at the bottom of the precooling box 9, so that the suspended support of the precooling box 9 can be realized.
In another embodiment, the front end and the rear end of the pre-cooling tank 9 are provided with through holes in a penetrating manner, and the through holes are covered and installed with observation windows 11;
the observation windows 11 are arranged at the front end and the rear end of the precooling box 9, so that the working conditions of precooling liquid in the precooling box 9 and the precooling coil 8 can be observed in time.
In another embodiment, the viewing window 11 is a tempered glass multi-layer vacuum insulation window;
therefore, the work inside the pre-cooling box 9 can be observed immediately, and meanwhile, the pre-cooling box 9 is prevented from absorbing external heat through the observation window 11.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a liquefied natural gas precooling apparatus, includes precooling case (9), its characterized in that: be provided with precooling coil (8) in precooling case (9), precooling coil (8) sets up from top to bottom, precooling coil (8) have three and front and back evenly distributed, the top input of precooling coil (8) runs through precooling case (9) and is connected with feed tee coupling pipe (14), the bottom output of precooling coil (8) runs through precooling case (9) and is connected with ejection of compact tee coupling pipe (19), the top of precooling case (9) is fixed and is provided with first natural gas delivery pump (13), the output of first natural gas delivery pump (13) passes through coupling hose and feed tee coupling pipe (14) fixed connection, the input of first natural gas delivery pump (13) is provided with liquefied gas access port (3), the bottom of precooling case (9) is fixed and is equipped with second natural gas delivery pump (16), the input and ejection of compact tee coupling pipe (19) intercommunication of second natural gas delivery pump (16), the output end of the second natural gas conveying pump (16) is provided with a liquefied gas outlet port (17), the output end of the second natural gas conveying pump (16) is also communicated with one end of a circulating pre-cooling pipe (18), and the other end of the circulating pre-cooling pipe (18) is communicated with the input end of the first natural gas conveying pump (13).
2. The lng precooling apparatus of claim 1, wherein: the fixed precooling liquid pump (6) that is provided with in top of precooling case (9), the front end at the inside top of precooling case (9) is fixed and is equipped with precooling liquid spray board (7), and the output of precooling liquid pump (6) and the input intercommunication of precooling liquid spray board (7), the rear end of the inside bottom of precooling case (9) is fixed and is equipped with precooling liquid absorption board (15), the output of precooling liquid absorption board (15) and the input intercommunication of precooling liquid pump (6), the output of precooling liquid spray board (7) are equipped with precooling liquid port (10) and just to precooling coil pipe (8), state the input of precooling liquid absorption board (15) and are equipped with precooling liquid port (10) and just to precooling coil pipe (8).
3. A lng precooling apparatus as claimed in claim 2, wherein: the input end of the precooling liquid pump (6) is also fixedly connected with a liquid inlet end pipe (5), and a liquid inlet valve (4) is arranged in the liquid inlet end pipe (5).
4. A lng precooling apparatus as claimed in claim 2, wherein: the output end of the pre-cooling liquid pump (6) is also fixedly connected with a liquid discharge end pipe (2), and a liquid discharge valve (1) is arranged in the liquid discharge end pipe (2).
5. The lng precooling apparatus of claim 1, wherein: four supporting legs (12) are fixedly mounted at the bottom of the precooling box (9).
6. The lng precooling apparatus of claim 1, wherein: the front end and the rear end of the precooling box (9) are provided with through ports in a penetrating manner, and the through ports are covered with observation windows (11).
7. The apparatus of claim 6, wherein: the observation window (11) is a toughened glass multi-layer vacuum heat insulation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121365888.0U CN214950122U (en) | 2021-06-20 | 2021-06-20 | Liquefied natural gas precooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121365888.0U CN214950122U (en) | 2021-06-20 | 2021-06-20 | Liquefied natural gas precooling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214950122U true CN214950122U (en) | 2021-11-30 |
Family
ID=79048374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121365888.0U Expired - Fee Related CN214950122U (en) | 2021-06-20 | 2021-06-20 | Liquefied natural gas precooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214950122U (en) |
-
2021
- 2021-06-20 CN CN202121365888.0U patent/CN214950122U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |