CN110566808A - Storage and transportation tank capable of preventing LNG from rolling - Google Patents
Storage and transportation tank capable of preventing LNG from rolling Download PDFInfo
- Publication number
- CN110566808A CN110566808A CN201910820361.3A CN201910820361A CN110566808A CN 110566808 A CN110566808 A CN 110566808A CN 201910820361 A CN201910820361 A CN 201910820361A CN 110566808 A CN110566808 A CN 110566808A
- Authority
- CN
- China
- Prior art keywords
- storage
- transportation tank
- lng
- motor
- machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 title abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 27
- 230000003068 static effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 3
- 239000003949 liquefied natural gas Substances 0.000 description 54
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/08—Mounting arrangements for vessels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a storage and transportation tank capable of preventing LNG from rolling, which comprises a storage and transportation tank, a support, a motor and speed reducer all-in-one machine and a control cabinet, wherein the motor and speed reducer all-in-one machine is connected with the control cabinet; the section of the storage and transportation tank is circular, a plurality of baffles and temperature sensors are arranged on the inner wall of the storage and transportation tank, and a plurality of first gears are sleeved on the outer side wall of the storage and transportation tank; the bracket is provided with two rotating shafts, and the two rotating shafts are respectively provided with a second gear meshed with the first gear; a driving gear is arranged on an output shaft of the motor and speed reducer all-in-one machine, and a driven gear is arranged on one rotating shaft; the temperature sensor is provided with a first communication module, the motor reducer all-in-one machine is provided with a second communication module, and the temperature sensor and the motor reducer all-in-one machine are in communication connection with the control cabinet. According to the invention, the temperature of each position in the height direction in the storage and transportation tank body is measured by using the temperature sensor and is transmitted to the control cabinet, and the control cabinet controls whether the motor and speed reducer all-in-one machine rolls or not according to the temperature difference condition in the storage and transportation tank body, so that the phenomenon that LNG in the storage and transportation tank rolls due to layering is avoided.
Description
Technical Field
The invention relates to the technical field of storage and transportation tanks, in particular to a storage and transportation tank capable of preventing LNG from rolling.
Background
The LNG is an english abbreviation of liquefied natural gas, natural gas is a combustible gas naturally extracted from a gas field, the main component of the natural gas is methane, the LNG is condensed into liquid by cooling gaseous natural gas at normal pressure to-162 ℃, and the liquefied natural gas can greatly save storage and transportation space and has the characteristics of large heat value, high performance and the like.
However, during the filling and storage of LNG, due to the difference of the degree of "aging" of LNG, the LNG may roll due to stratification, and although the LNG storage tank has a small volume, the LNG storage tank may still roll after long-term transportation. When the phenomenon of rolling occurs, a large amount of evaporated gas is generated instantly and is difficult to discharge in time, so that instant overpressure of the storage and transportation tank can be caused, equipment is damaged if the overpressure is low, the service life of the storage and transportation tank is influenced, and fire and explosion accidents are caused if the overpressure is high, so that life and property losses are caused.
Disclosure of Invention
The invention aims to provide a storage and transportation tank capable of preventing LNG from rolling against the defects of the prior art, and the specific scheme is as follows:
The storage and transportation tank for preventing the LNG from rolling comprises a storage and transportation tank, a support, a motor and speed reducer integrated machine and a control cabinet, wherein the motor and speed reducer integrated machine and the control cabinet are arranged on the support; the section of the storage and transportation tank is circular, a plurality of baffles which are arranged in a staggered manner are arranged on the inner wall of the storage and transportation tank, a plurality of temperature sensors are arranged on the inner wall of the storage and transportation tank along the height direction, and a plurality of first gears are sleeved on the outer side wall of the storage and transportation tank; the bracket is provided with two rotating shafts which are parallel to each other, and the two rotating shafts are both provided with second gears which are meshed with the first gears; a driving gear is arranged on an output shaft of the motor and speed reducer all-in-one machine, and a driven gear meshed with the driving gear is arranged on one rotating shaft; the temperature sensor is provided with a first communication module, the motor reducer all-in-one machine is provided with a second communication module, and the temperature sensor and the motor reducer all-in-one machine are in communication connection with the control cabinet.
Based on the above, the baffle is in the horizontal position when the storage and transportation tank is in the static state.
Based on the above, the bottom of the storage and transportation tank is provided with an LNG inlet, and the side surface of the storage and transportation tank is provided with an LNG outlet.
compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:
The storage and transportation tank for preventing LNG from rolling comprises a storage and transportation tank and a support, wherein a motor and speed reducer integrated machine and a control cabinet are arranged on the support, a plurality of temperature sensors are arranged on the inner wall of the storage and transportation tank along the height direction, horizontal baffles are arranged in the storage and transportation tank at intervals, the temperature sensors and the motor and speed reducer integrated machine are in communication connection with the control cabinet, a plurality of first gears are sleeved outside the storage and transportation tank, two rotating shafts are arranged on the support, second gears meshed with the first gears are arranged on the rotating shafts, a driving gear is arranged on the motor and speed reducer integrated machine, two rotating shafts are arranged on the support, second gears meshed with the first gears are arranged on the rotating shafts, a driving gear is arranged at the output end of the motor and speed reducer integrated machine; the control cabinet controls the start and stop of the motor speed reducer all-in-one machine according to the values of the temperature sensors in the storage and transportation tank, so that the storage and transportation tank is controlled to turn over, the phenomenon that LNG in the storage and transportation tank rolls due to layering is avoided, the structure is simple, and the practicability is high.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
In the figure: 1. a support; 2. a motor reducer all-in-one machine; 3. a drive gear; 4. a driven gear; 5. a rotating shaft; 5-1, anti-drop nut; 6. a bearing; 7. a first gear; 8. a second gear; 9. a storage and transportation tank; 10, LNG outlet; an LNG inlet; 12. a baffle plate; 13. a temperature sensor; 14. a control cabinet.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Examples
As shown in fig. 1 to 2, the invention provides a storage and transportation tank 9 for preventing LNG from rolling, comprising a storage and transportation tank 9, a support 1, a motor and speed reducer all-in-one machine 2 arranged on the support 1, and a control cabinet 14.
The section of the storage and transportation tank 9 is circular, a plurality of baffles 12 which are arranged in a staggered mode are arranged on the inner wall of the storage and transportation tank 9, and when the storage and transportation tank 9 is in a static state, the baffles 12 are in a horizontal position. The inner wall of the storage and transportation tank 9 is provided with a plurality of temperature sensors 13 along the height direction, and the outer side wall of the storage and transportation tank 9 is sleeved with a plurality of first gears 7.
Wherein, be equipped with first communication module on the temperature sensor 13, be equipped with second communication module on the motor reducer all-in-one 2, temperature sensor 13, motor reducer all-in-one 2 all communication connection to switch board 14.
The support 1 is provided with two rotating shafts 5 which are parallel to each other, the rotating shafts 5 are fixedly arranged on two bearings 6 arranged on the support 1, the two rotating shafts 5 are respectively provided with a second gear 8 meshed with the first gear 7, and the second gears 8 are sleeved at the thin ends of the two ends of the rotating shafts 5 and are fixed through anti-falling nuts 5-1.
And a driving gear 3 is arranged on an output shaft of the motor speed reducer all-in-one machine 2, and a driven gear 4 meshed with the driving gear 3 is arranged on one rotating shaft 5.
After the LNG is stored and transported in the storage and transportation tank 9 for a long time, the pressure of the LNG on the lower side is higher than that of the LNG on the top of the storage and transportation tank 9 due to the gravity of the LNG on the upper side, and the evaporation temperature of the LNG is correspondingly increased. The LNG in the bottom portion becomes LNG having a certain degree of supercooling at the vaporization temperature corresponding to the pressure, and the vaporization rate is slower than that of the LNG in the upper portion. However, the external heat is always continuously transferred into the storage and transportation tank 9, and the LNG on the upper side is partially evaporated to form BOG; while a significant portion of the heat gained by the LNG on the lower side contributes to the LNG temperature increase, as a result of which its density will decrease, when the LNG density at the bottom is less than that at the upper part, the stratification equilibrium will be disrupted, forming a so-called "rollover". At this time, the temperature of the LNG at the bottom is higher than that of the LNG at the upper portion, and the LNG having a low temperature after mixing is heated by the LNG having a high temperature from the bottom turning up to be rapidly vaporized, and after the LNG having a high temperature at the bottom is turned up, the LNG loses the gravity effect of the LNG at the upper portion, and the pressure is lowered to be overheated LNG, and thus severe vaporization is also generated. Thus, after the equilibrium is disrupted, the liquid "tumbles" causing a sharp increase in the LNG vaporization rate. If it is too late to discharge a large amount of LNG boil-off gas, the pressure in the LNG storage tank 9 will exceed the sensible working pressure, which is very disadvantageous for the safe storage of LNG.
In view of the fact that the temperature of the LNG to be newly filled into the LNG storage and transportation tank 9 is lower than the temperature of the LNG in the tank body, and the temperature of the LNG in the tank body is equalized as much as possible, an LNG inlet 10 is provided at the bottom of the storage and transportation tank 9, and an LNG outlet 11 is provided at the side thereof.
The specific working principle of the invention is as follows: the temperature sensors 13 at different height positions in the storage and transportation tank 9 monitor the temperature of each position in the storage and transportation tank 9 in real time, and transmit data to the control cabinet 14, the control cabinet 14 analyzes the temperature difference condition according to the temperature data measured by the temperature sensors 13, when the temperature difference exceeds a set value, the control cabinet 14 controls the motor reducer all-in-one machine 2 to rotate, the motor reducer all-in-one machine 2 drives the storage and transportation tank 9 to rotate, the LNG at the lower layer is mixed with the LNG at the upper layer under the stirring of the baffle 12 in the storage and transportation tank 9, the layering phenomenon of the LNG in the tank body is solved, and the LNG is prevented from rolling.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (3)
1. A LNG rollover prevention storage and transportation tank (9), characterized by: the device comprises a storage and transportation tank (9), a support (1), a motor and speed reducer integrated machine (2) arranged on the support (1) and a control cabinet (14); the section of the storage and transportation tank (9) is circular, a plurality of baffles (12) which are arranged in a staggered mode are arranged on the inner wall of the storage and transportation tank (9), a plurality of temperature sensors (13) are arranged on the inner wall of the storage and transportation tank (9) along the height direction, and a plurality of first gears (7) are sleeved on the outer side wall of the storage and transportation tank (9); two rotating shafts (5) which are parallel to each other are arranged on the support (1), and second gears (8) which are meshed with the first gears (7) are arranged on the two rotating shafts (5); a driving gear (3) is arranged on an output shaft of the motor and speed reducer all-in-one machine (2), and a driven gear (4) meshed with the driving gear (3) is arranged on one rotating shaft (5); be equipped with first communication module on temperature sensor (13), be equipped with second communication module on motor reducer all-in-one (2), temperature sensor (13), motor reducer all-in-one (2) all the communication be connected to switch board (14).
2. LNG rollover prevention storage and transportation tank (9) according to claim 1, characterized in that: the baffle (12) is in a horizontal position when the storage and transportation tank (9) is in a static state.
3. LNG rollover prevention storage and transportation tank (9) according to claim 1, characterized in that: the bottom of the storage and transportation tank (9) is provided with an LNG inlet (11), and the side surface of the storage and transportation tank (9) is provided with an LNG outlet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910820361.3A CN110566808A (en) | 2019-09-01 | 2019-09-01 | Storage and transportation tank capable of preventing LNG from rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910820361.3A CN110566808A (en) | 2019-09-01 | 2019-09-01 | Storage and transportation tank capable of preventing LNG from rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566808A true CN110566808A (en) | 2019-12-13 |
Family
ID=68777219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910820361.3A Pending CN110566808A (en) | 2019-09-01 | 2019-09-01 | Storage and transportation tank capable of preventing LNG from rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566808A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317255A (en) * | 1928-10-05 | 1929-08-15 | Edward August Hoffmann | Improvements in method of and apparatus for transporting concrete |
| FR2838804A1 (en) * | 2002-04-18 | 2003-10-24 | Renault Sa | Pressure sensor for a liquefied gas tank, especially for a motor vehicle, comprises a piezoelectric sensor that is formed by converting the inner tank wall surface to corundum which then acts as the sensor itself |
| JP2009138933A (en) * | 2007-12-06 | 2009-06-25 | Kanto L-Engineering Co Ltd | Flow control device |
| CN203199467U (en) * | 2013-04-28 | 2013-09-18 | 江苏安普特防爆科技有限公司 | Rotating type LNG storage tank |
| CN104762204A (en) * | 2015-03-24 | 2015-07-08 | 锁现民 | A horizontal liquid-solid coupling type edible fungi thallus fermenting method and a device |
| CN105819124A (en) * | 2016-04-22 | 2016-08-03 | 辽宁石油化工大学 | Strengthened cooling crystal scraping device for naphthalene tank breather valve |
| CN208482377U (en) * | 2018-06-01 | 2019-02-12 | 山东渠风食品科技有限公司 | A kind of mixing arrangement of biological protein feedstuff |
| CN210716946U (en) * | 2019-09-01 | 2020-06-09 | 上海友富新能源科技有限责任公司 | Storage and transportation tank capable of preventing LNG from rolling |
| CN213272043U (en) * | 2020-09-11 | 2021-05-25 | 鑫鼎新能源有限公司 | Storage and transportation tank capable of preventing LNG from rolling |
-
2019
- 2019-09-01 CN CN201910820361.3A patent/CN110566808A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB317255A (en) * | 1928-10-05 | 1929-08-15 | Edward August Hoffmann | Improvements in method of and apparatus for transporting concrete |
| FR2838804A1 (en) * | 2002-04-18 | 2003-10-24 | Renault Sa | Pressure sensor for a liquefied gas tank, especially for a motor vehicle, comprises a piezoelectric sensor that is formed by converting the inner tank wall surface to corundum which then acts as the sensor itself |
| JP2009138933A (en) * | 2007-12-06 | 2009-06-25 | Kanto L-Engineering Co Ltd | Flow control device |
| CN203199467U (en) * | 2013-04-28 | 2013-09-18 | 江苏安普特防爆科技有限公司 | Rotating type LNG storage tank |
| CN104762204A (en) * | 2015-03-24 | 2015-07-08 | 锁现民 | A horizontal liquid-solid coupling type edible fungi thallus fermenting method and a device |
| CN105819124A (en) * | 2016-04-22 | 2016-08-03 | 辽宁石油化工大学 | Strengthened cooling crystal scraping device for naphthalene tank breather valve |
| CN208482377U (en) * | 2018-06-01 | 2019-02-12 | 山东渠风食品科技有限公司 | A kind of mixing arrangement of biological protein feedstuff |
| CN210716946U (en) * | 2019-09-01 | 2020-06-09 | 上海友富新能源科技有限责任公司 | Storage and transportation tank capable of preventing LNG from rolling |
| CN213272043U (en) * | 2020-09-11 | 2021-05-25 | 鑫鼎新能源有限公司 | Storage and transportation tank capable of preventing LNG from rolling |
Non-Patent Citations (1)
| Title |
|---|
| 张天路;: "浅谈LNG储罐翻滚现象及防止方法", 科技展望, no. 09, 30 March 2016 (2016-03-30), pages 184 * |
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