CN211780175U - LNG vaporizing station intelligent operation system based on point supplies - Google Patents
LNG vaporizing station intelligent operation system based on point supplies Download PDFInfo
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- CN211780175U CN211780175U CN201921884877.6U CN201921884877U CN211780175U CN 211780175 U CN211780175 U CN 211780175U CN 201921884877 U CN201921884877 U CN 201921884877U CN 211780175 U CN211780175 U CN 211780175U
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Abstract
The utility model is suitable for a natural gas processing technology field provides a LNG vaporizing station intelligent operation system based on point supply, including storage component and exhaust component, the storage component includes LNG tank wagon storage tank and connecting tube; through setting up air temperature formula vaporizer and water bath vaporizer for air temperature formula vaporizer and water bath vaporizer can carry out gasification under different temperature environment to storage tank exhaust LNG, EAG heater can cause storage tank or pipeline pressure to rise sharply simultaneously because of reasons such as maloperation, when surpassing the relief valve in the storage tank and play the jump pressure, the relief valve effect, the superpressure gas releases, and through EAG heater, carry out concentrated heating back to the low-temperature natural gas who empties, discharge after the blow-down pipe discharges, thereby protection storage tank and pipeline, the functions such as gas collection preliminary treatment, pressure regulating and steady voltage, safety protection, odorization, heating have been realized, and then be convenient for the intelligent operation management of city gate station, regional pressure regulating station and distribution station etc..
Description
Technical Field
The utility model belongs to the technical field of the natural gas is handled, especially, relate to a LNG vaporizing station intelligence operation system based on point supplies.
Background
In recent years, along with the development and continuous deepening of the economy of China, the gas engineering is developed more quickly. In the early stage of the development of city gas, the gas was started in coastal cities such as Guangdong and Fujian, and the energy utilization was started from liquefied petroleum gas. Through the test in coastal cities, the liquefied petroleum gas is well utilized, so the method is rapidly popularized, rapidly develops in China, and lays a good foundation for later energy sources such as natural gas and the like. In the next less than ten years, a plurality of natural gas resource enrichment areas appear in succession in China, and then through development, main energy of urban gas in China is converted into natural gas, and the natural gas is one of the main energy applied by people today.
The development of the transmission and distribution technology in China is not small and various, the transmission and distribution technology is mainly the transmission and distribution of natural gas, LNG is transported to a gasification station through a tank car, the tank car is pressurized through an unloading pressurizer at an unloading platform, and the LNG is sent to a storage tank by using pressure difference. Under the working condition, the LNG in the storage tank is pressurized to a certain pressure (greater than 0.2Mpa of the outbound pressure) by the pressurizer. The pressurized low-temperature LNG automatically flows into the main air-temperature type gasifier, is converted into gaseous NG after exchanging heat with air, and is heated by the water bath type heater when the temperature of the natural gas at the outlet of the air-temperature type gasifier is lower than 5 ℃. And finally, the gas enters a transmission and distribution pipe network after being odorized and metered and is sent to various users, and the mode has single function, cannot uniformly realize the functions of gas pretreatment, pressure regulation and stabilization, safety protection, odorization, heating and the like, and is not beneficial to intelligent operation management of urban door stations, regional pressure regulation stations, transmission and distribution stations and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a LNG vaporizing station intelligence operation system based on point supplies aims at solving big problem.
The utility model discloses a realize like this, a LNG vaporizing station intelligence operation system based on point confession, including storage component and exhaust subassembly, storage component includes LNG tank wagon storage tank, heater, connecting tube and BOG storage tank, the connecting tube with storage tank fixed connection, just the connecting tube is located the output of storage tank, LNG tank wagon storage tank with the connecting tube can dismantle the connection, and LNG tank wagon storage tank is located the connecting tube keeps away from the one end of LNG tank wagon storage tank, the heater with the fixed connection of storage tank, and the heater is located the output of storage tank, the BOG storage tank with the fixed connection of heater, and the BOG storage tank is located the output of heater;
the exhaust component comprises an air temperature type vaporizer, a deodorizer, a water bath type vaporizer, an EAG heater and an emptying pipe, the air temperature type vaporizer is fixedly connected with the storage tank, the air-temperature vaporizer is positioned at the output end of the storage tank, the water bath vaporizer is fixedly connected with the air-temperature vaporizer, and the space between the air-temperature vaporizer and the BOG storage tank is not provided, one end of the water-bath vaporizer far away from the air-temperature vaporizer is fixedly connected with the BOG storage tank, the odorizing device is fixedly connected with the water-bath vaporizer and the BOG storage tank, the odorizing device is positioned at one end of the BOG storage tank far away from the heater, the EAG heater is fixedly connected with the heater, and the EAG heater is positioned at the output end of the BOG storage tank, the emptying pipe is fixedly connected with the EAG heater, and the EAG heater is positioned at the output end of the EAG heater.
Preferably, the storage assembly further comprises a storage tank supercharger, the storage tank supercharger is fixedly connected with the storage tank, and the storage tank supercharger is located between the input end of the storage tank and the output end of the storage tank.
Preferably, the storage assembly further comprises a BOG storage tank, the BOG storage tank is detachably connected with the LNG tank wagon storage tank, and the BOG storage tank is located on one side of the LNG tank wagon storage tank close to the storage tank.
Preferably, the storage component still includes BOG heater and BOG buffer tank, the BOG heater with the connection can be dismantled to the LNG tank wagon storage tank, just the BOG heater is located the output of LNG tank wagon storage tank, the BOG buffer tank with BOG heater fixed connection, just the BOG buffer tank is located the output of BOG heater.
Preferably, the storage component further comprises a self-exhaust valve, the self-exhaust valve is fixedly connected with the BOG buffer tank, and the self-exhaust valve is located at the output end of the BOG buffer tank.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an LNG vaporizing station intelligence operation system based on point supplies, through setting up air temperature formula vaporizer and water bath vaporizer, and with air temperature formula vaporizer and water bath vaporizer series installation, make air temperature formula vaporizer and water bath vaporizer can carry out gasification under different temperature environment to the LNG that the storage tank discharged, set up odorizing ware simultaneously, the BOG heater, BOG storage tank and EAG heater, odorizing ware can odorize LNG, the BOG heater can heat BOG gas, the BOG storage tank can be retrieved BOG gas after heating, simultaneously the EAG heater can be when causing storage tank or pipeline pressure to rise sharply because of reasons such as maloperation, when exceeding the relief valve in the storage tank and take off pressure, the relief valve effect, overpressure gas releases, and through the EAG heater, after the low-temperature natural gas to the atmospheric pressure carries out the concentrated heating, the gas is discharged through the vent pipe, so that the storage tank and the pipeline are protected, functions of gas pretreatment, pressure regulation and stabilization, safety protection, odorization, heating and the like are realized, and intelligent operation management of urban gate stations, regional pressure regulation stations, transmission and distribution stations and the like is facilitated.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the BOG gas recovery of the present invention.
In the figure: 1-storage component, 11-LNG tank car storage tank, 12-storage tank, 13-storage tank supercharger, 14-heater, 15-connecting pipeline, 16-BOG storage tank, 17-BOG heater, 18-BOG buffer tank, 19-self-exhaust valve, 2-exhaust component, 21-air temperature type vaporizer, 22-odorizer, 23-water bath type vaporizer, 24-EAG heater and 25-blow-down pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-2, the present invention provides a technical solution: an LNG vaporizing station intelligent operation system based on point supply comprises a storage assembly 1 and an exhaust assembly 2, wherein the storage assembly 1 comprises an LNG tank car storage tank 11, a storage tank 12, a heater 14, a connecting pipeline 15 and a BOG storage tank 16, the connecting pipeline 15 is fixedly connected with the storage tank 12, the connecting pipeline 15 is located at the output end of the storage tank 12, the LNG tank car storage tank 11 is detachably connected with the connecting pipeline 15, the LNG tank car storage tank 11 is located at one end, far away from the LNG tank car storage tank 11, of the connecting pipeline 15, the heater 14 is fixedly connected with the storage tank 12, the heater 14 is located at the output end of the storage tank 12, the BOG storage tank 16 is fixedly connected with the heater 14, and the BOG storage tank 16 is located at the output end of the heater;
the exhaust assembly 2 comprises an air-temperature vaporizer 21, an odorizing device 22, a water bath vaporizer 23, an EAG heater 24 and an exhaust pipe 25, the air-temperature vaporizer 21 is fixedly connected with the storage tank 12, the air-temperature vaporizer 21 is located at the output end of the storage tank 12, the water bath vaporizer 23 is fixedly connected with the air-temperature vaporizer 21 and is not located between the air-temperature vaporizer 21 and the BOG storage tank 16, one end, away from the air-temperature vaporizer 21, of the water bath vaporizer 23 is fixedly connected with the BOG storage tank 16, the odorizing device 22 is fixedly connected with the water bath vaporizer 23 and the BOG storage tank 16, the odorizing device 22 is located at one end, away from the heater 14, of the BOG storage tank 16, the EAG heater 24 is fixedly connected with the heater 14, the EAG heater 24 is located at the output end of the BOG storage tank 16, the exhaust pipe 25 is fixedly connected with the EAG heater 24, and the EAG heater 24 is located at the output end of the EAG heater 24.
In the present embodiment, by providing the storage tank 12, the normal working pressure of the storage tank 12 is defined and controlled by the pressure after the constant pressure value of the pressure increasing valve provided in the storage tank 12, the allowable maximum working pressure of the storage tank 12 is defined and automatically controlled by the pressure before the constant pressure value of the self-operated pressure reducing valve provided in the gas phase outlet pipeline of the storage tank 12, and when the normal working pressure of the storage tank 12 is lower than the opening pressure of the pressure increasing valve, the pressure increasing valve is opened for automatic pressurization; when the storage tank 12 allows the highest working pressure to reach the set opening value of the pressure reducing valve of the storage tank 12, the pressure reducing valve is automatically opened to release pressure, so as to protect the safety of the storage tank 12, meanwhile, in order to ensure that the pressure increasing valve and the pressure reducing valve do not interfere with each other when working, the closing pressure of the pressure increasing valve and the opening pressure of the pressure reducing valve cannot be overlapped, the pressure difference above 0.05Mpa is ensured, the opening pressure of the pressure reducing valve should not be larger than the tripping pressure of the safety valve of the storage tank 12, the air-temperature vaporizer 21 can vaporize the LNG, when the temperature of the LNG outlet is lower than 0 ℃ in winter, the low-temperature alarm is given and the water-bath vaporizer 23 is manually started, hot water produced by a hot water boiler transfers heat with the low-temperature LNG, the LNG is vaporized: 1. the storage tank 12 absorbs the evaporation gas generated by the external heat; 2. boil-off gas generated by the storage tank 12 due to changes in pressure and gas phase volume when the LNG is unloaded; 3. the vaporized gas generated when the LNG entering the storage tank 12 contacts the LNG with higher temperature in the original storage tank; 4. gas generated by the depressurization operation when the pressure in the storage tank 12 is high; these BOG gases may be recovered by venting through piping and heaters 14 to a BOG storage tank 16, where the natural gas has a density greater than air at temperatures below about-120 ℃ and, once leaked, will collect on the ground and be less volatile; at normal temperature, the natural gas density is far less than the air density and is easy to diffuse, according to the characteristics, safe discharge must be carried out according to the standard requirements, through arranging the EAG heater 24 and the emptying pipe 25, when the pressure of the storage tank 12 or the pipeline is sharply increased due to misoperation and the like, when the pressure exceeds the tripping pressure of a safety valve in the storage tank 12, the safety valve acts, overpressure gas is released, the emptied low-temperature natural gas is intensively heated through the EAG heater 24 and then discharged through the emptying pipe 25, so that the storage tank 12 and the pipeline are protected, through arranging the odorizer 22, the LNG enters an odorizing treatment stage after being gasified, the odorizing equipment is skid-mounted integrated equipment, odorizing agents can be proportionally added according to flow signals, the odorizing agents can also be added according to a fixed dose, the adding mark is 20mg/Nm3, when the lower explosion limit is reached to 20%, the odorizing agents can be detected, wherein, the tetrahydrostopperin is selected as the odorizing, the odorization uses a diaphragm metering pump as power, realizes the functions of gas pretreatment, pressure regulation and stabilization, safety protection, odorization, heating and the like, and can realize intelligent operation management of urban gate stations, regional pressure regulation stations, transmission and distribution stations and the like.
Further, the storage assembly 1 further comprises a storage tank pressurizer 13, the storage tank pressurizer 13 is fixedly connected with the storage tank 12, and the storage tank pressurizer 13 is located between the input end of the storage tank 12 and the output end of the storage tank 12.
In the present embodiment, when it is necessary to discharge the LNG in the storage tank 12, the storage tank 12 may be pressurized by the storage tank pressurizing unit 13, and when the pressure of the storage tank 12 is higher than the outbound pressure by 0.2Mpa, the LNG is transported to the air-temperature vaporizer 21 by a pipeline by a pressure difference and vaporized.
Further, storage assembly 1 further includes BOG storage tank 16, BOG storage tank 16 is detachably connected to LNG tanker storage tank 11, and BOG storage tank 16 is located on a side of LNG tanker storage tank 11 close to storage tank 12.
In this embodiment, when unloading LNG from the LNG tanker tank 11, the LNG tanker tank 11 may be pressurized by the BOG tank 16, and when the pressure of the LNG tanker tank 11 is greater than the pressure of the tank 12 by 0.2Mpa, LNG may be delivered into the tank 12 through the connection pipe 15 by using a pressure difference.
Further, storage component 1 still includes BOG heater 17 and BOG buffer tank 18, BOG heater 17 can dismantle with LNG tank wagon storage tank 11 and be connected, and BOG heater 17 is located the output of LNG tank wagon storage tank 11, BOG buffer tank 18 and BOG heater 17 fixed connection, and BOG buffer tank 18 is located BOG heater 17's output, storage component 1 still includes from discharge valve 19, from discharge valve 19 and BOG buffer tank 18 fixed connection, and from discharge valve 19 is located the output that is located BOG buffer tank 18.
In the present embodiment, when the LNG in the LNG tanker 11 is completely discharged, the low-temperature LNG in the LNG tanker 11 is discharged into the BOG buffer tank 18 through the pipeline and the BOG buffer tank 18 for recycling, and when the BOG buffer tank 18 is full, the self-venting valve 19 is opened, so that the LNG collected in the BOG buffer tank 18 is discharged into the municipal pipeline for use.
The utility model discloses a theory of operation and use flow: the utility model discloses after installing, utilize BOG storage tank 16 to carry out the pressure boost to the LNG tank wagon storage tank 11 that transports, when LNG tank wagon storage tank 11 pressure is greater than storage tank 12 pressure 0.2Mpa, utilize pressure differential to carry LNG to storage tank 12 in through connecting tube 15, when needs discharge the LNG in the storage tank 12, can carry out the pressure boost to storage tank 12 through storage tank booster 13, when storage tank 12 pressure is greater than the pressure of leaving a station 0.2Mpa, utilize pressure differential to carry LNG to air temperature vaporizer 21 department through the pipeline and gasify, when LNG export temperature is less than 0 ℃ in winter makes air temperature vaporizer 21 can't normally gasify LNG, manually start water bath vaporizer 23, utilize the hot water and the low temperature LNG heat transfer of hot water heater production, make LNG gasification, get into odorizing equipment after that, can more promptly the gas flow volume with the odorizing agent proportionally, also can be according to fixed dosage filling odorizing agent, the filling mark is 20mg/Nm3, wherein the odorant chooses for use tetrahydro sai thiophene, adds the smelly diaphragm type measuring pump that uses as power, and owing to heat absorption or pressure change cause partly evaporation of LNG to be gaseous simultaneously, wherein BOG gas includes: 1. the storage tank 12 absorbs the evaporation gas generated by the external heat; 2. boil-off gas generated by the storage tank 12 due to changes in pressure and gas phase volume when the LNG is unloaded; 3. the vaporized gas generated when the LNG entering the storage tank 12 contacts the LNG with higher temperature in the original storage tank; 4. Gas generated by the depressurization operation when the pressure in the storage tank 12 is high; this BOG gas may be recycled by venting through piping and heater 14 to BOG storage tank 16.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a LNG vaporizing station intelligence operation system based on point supplies which characterized in that: comprises a storage component (1) and an exhaust component (2), wherein the storage component (1) comprises an LNG tank car storage tank (11), a storage tank (12), a heater (14), a connecting pipeline (15) and a BOG storage tank (16), the connecting pipeline (15) is fixedly connected with the storage tank (12), the connecting pipeline (15) is positioned at the output end of the storage tank (12), the LNG tank wagon storage tank (11) is detachably connected with the connecting pipeline (15), the LNG tank wagon storage tank (11) is positioned at one end of the connecting pipeline (15) far away from the LNG tank wagon storage tank (11), the heater (14) is fixedly connected with the storage tank (12), the heater (14) is positioned at the output end of the storage tank (12), the BOG storage tank (16) is fixedly connected with the heater (14), and the BOG storage tank (16) is located at the output of the heater (14);
the exhaust assembly (2) comprises an air-temperature vaporizer (21), an odorizing device (22), a water-bath vaporizer (23), an EAG heater (24) and an emptying pipe (25), the air-temperature vaporizer (21) is fixedly connected with the storage tank (12), the air-temperature vaporizer (21) is located at the output end of the storage tank (12), the water-bath vaporizer (23) is fixedly connected with the air-temperature vaporizer (21) and is not located between the air-temperature vaporizer (21) and the BOG storage tank (16), one end, far away from the air-temperature vaporizer (21), of the water-bath vaporizer (23) is fixedly connected with the BOG storage tank (16), the odorizing device (22) is fixedly connected with the water-bath vaporizer (23) and the BOG storage tank (16), and the odorizing device (22) is located at one end, far away from the heater (14), of the BOG storage tank (16), the EAG heater (24) is fixedly connected with the heater (14), the EAG heater (24) is positioned at the output end of the BOG storage tank (16), the vent pipe (25) is fixedly connected with the EAG heater (24), and the EAG heater (24) is positioned at the output end of the EAG heater (24).
2. The intelligent operating system of a point-feed-based LNG vaporizer of claim 1, wherein: the storage assembly (1) further comprises a storage tank supercharger (13), the storage tank supercharger (13) is fixedly connected with the storage tank (12), and the storage tank supercharger (13) is located between the input end of the storage tank (12) and the output end of the storage tank (12).
3. The intelligent operating system of a point-feed-based LNG vaporizer of claim 1, wherein: storage component (1) still includes BOG storage tank (16), BOG storage tank (16) with LNG tank wagon storage tank (11) can be dismantled and be connected, just BOG storage tank (16) are located LNG tank wagon storage tank (11) are close to one side of storage tank (12).
4. The intelligent operating system of a point-feed-based LNG vaporizer of claim 1, wherein: storage component (1) still includes BOG heater (17) and BOG buffer tank (18), BOG heater (17) with LNG tank wagon storage tank (11) can be dismantled the connection, just BOG heater (17) are located the output of LNG tank wagon storage tank (11), BOG buffer tank (18) with BOG heater (17) fixed connection, just BOG buffer tank (18) are located the output of BOG heater (17).
5. The intelligent operating system of a point-feed-based LNG vaporizer of claim 4, wherein: storage component (1) still includes from discharge valve (19), from discharge valve (19) with BOG buffer tank (18) fixed connection, just from discharge valve (19) be located the output of BOG buffer tank (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921884877.6U CN211780175U (en) | 2019-11-05 | 2019-11-05 | LNG vaporizing station intelligent operation system based on point supplies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921884877.6U CN211780175U (en) | 2019-11-05 | 2019-11-05 | LNG vaporizing station intelligent operation system based on point supplies |
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| CN211780175U true CN211780175U (en) | 2020-10-27 |
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| CN201921884877.6U Active CN211780175U (en) | 2019-11-05 | 2019-11-05 | LNG vaporizing station intelligent operation system based on point supplies |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294558A (en) * | 2021-12-21 | 2022-04-08 | 广东华南特种气体研究所有限公司 | Emergent emptying devices of LNG tank wagon |
| CN115468112A (en) * | 2022-08-01 | 2022-12-13 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time safety forecasting method, system, terminal and storage medium |
-
2019
- 2019-11-05 CN CN201921884877.6U patent/CN211780175U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294558A (en) * | 2021-12-21 | 2022-04-08 | 广东华南特种气体研究所有限公司 | Emergent emptying devices of LNG tank wagon |
| CN114294558B (en) * | 2021-12-21 | 2023-11-21 | 广东华南特种气体研究所有限公司 | Emergent evacuation equipment of LNG tank wagon |
| CN115468112A (en) * | 2022-08-01 | 2022-12-13 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time safety forecasting method, system, terminal and storage medium |
| CN115468112B (en) * | 2022-08-01 | 2023-10-27 | 中国船级社武汉规范研究所 | LNG tank remaining maintenance time safety forecasting method, system, terminal and storage medium |
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