CN210241175U - LNG vaporizing station gasification facility - Google Patents
LNG vaporizing station gasification facility Download PDFInfo
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- CN210241175U CN210241175U CN201920985844.4U CN201920985844U CN210241175U CN 210241175 U CN210241175 U CN 210241175U CN 201920985844 U CN201920985844 U CN 201920985844U CN 210241175 U CN210241175 U CN 210241175U
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Abstract
The utility model relates to a LNG vaporizing station gasification facility, which comprises an inlet main pipe, an air-temperature vaporizer I and a water bath type reheater, wherein an inlet end of the air-temperature vaporizer I is connected with the inlet main pipe through a first branch pipe and a first valve, an outlet end of the air-temperature vaporizer I is connected with an inlet end of the water bath type reheater through a second branch pipe and a second valve, and an outlet end of the water bath type reheater is connected with a downstream user end through a third branch pipe and a third valve; and a fifth branch pipe and a fifth valve which are communicated with the inlet end of the air-temperature type gasifier and the outlet end of the water-bath type reheater are arranged between the first air-temperature type gasifier and the water-bath type reheater. The utility model discloses can solve traditional LNG vaporizing station gasification equipment when the gasification ability is not enough under low temperature environment, the unable normal operating of station yard and air temperature formula vaporizer defrosting scheduling problem. The utility model discloses simple structure, safe and reliable.
Description
Technical Field
The utility model relates to a LNG vaporizing station gasification facility.
Background
With the gradual change of the development of domestic natural gas from cities to suburbs and rural areas, LNG gasification stations are more and more applied in remote towns where natural gas pipelines cannot reach. At present, an LNG vaporizing station mainly adopts a mode of serially connecting an air-temperature vaporizer and a water-bath type reheater to heat and vaporize LNG. The LNG is heated by an air-temperature vaporizer and then heated by a water-bath type reheater to the designed gaseous natural gas temperature. The process can effectively utilize air heat energy and reduce the energy consumption of the LNG gasification station. Under the condition of generally higher ambient temperature, the system runs well, and the starting frequency of the water bath type reheater is low. When the system is used in cold regions, the air-temperature gasifier is obvious in frosting, the heating efficiency of the air-temperature gasifier is reduced at a very high speed, and the temperature of natural gas at the outlet of the water bath type reheater is lower than a designed value, so that a subsequent pipeline is frosted and even cracked. If the load of the water bath type reheater is calculated according to the LNG entering at the beginning of the design, the equipment investment is large. The design of the utility model can solve the contradiction of the original LNG gasification station. In addition, even in summer, the air-temperature type gasifier can also have serious frosting working conditions when the LNG gasification station runs at the peak, and the normal gas supply of the station yard is influenced.
Disclosure of Invention
The utility model aims to solve the problem that a LNG vaporizing station gasification facility is provided, this facility can make the station gasification normal operating under low temperature environment.
The utility model provides a technical scheme is: the utility model provides a LNG vaporizing station gasification facility, includes that the import is responsible for, air-temperature vaporizer one and water bath formula reheater, and an inlet end of air-temperature vaporizer is connected with the import through first branch pipe and first valve, and the exit end of air-temperature vaporizer one is connected with the inlet end of water bath formula reheater through second branch pipe and second valve, and the exit end of water bath formula reheater passes through third branch pipe and third valve and connects the low reaches user end. And a fifth branch pipe and a fifth valve which are communicated with the inlet end of the air-temperature type gasifier and the outlet end of the water-bath type reheater are arranged between the first air-temperature type gasifier and the water-bath type reheater.
The utility model discloses still include air-temperature type vaporizer two, air-temperature type vaporizer two entrance points are connected with the import person in charge through sixth branch pipe and sixth valve, and the exit end of air-temperature type vaporizer two is equipped with the seventh branch pipe and the seventh valve of intercommunication air-temperature type vaporizer two entrance points and fifth branch pipe between air-temperature type vaporizer two and the fifth branch pipe through seventh branch pipe and seventh valve and the entrance connection of water-bath type reheater.
Further, the utility model discloses still include the PLC controller and set up the temperature sensor on the third branch pipe, first valve, fourth valve, fifth valve and sixth valve are the pneumatic valve, and first valve, fourth valve, fifth valve and sixth valve are connected with the control end electricity of PLC controller respectively, and temperature sensor is connected with the signal input part electricity of PLC controller.
The utility model discloses the installation is used for in the LNG vaporizing station, when LNG vaporizing station tradition technology can't satisfy the gasification demand, through letting LNG at first through the reheater heating, and then through the heating of traditional technology again to under the condition that does not show the increase heating load of station, maintain the operation of former station. The utility model discloses the flow is simple, safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses an import is responsible for 1, empty temperature formula vaporizer 2, empty temperature formula vaporizer two 4 and water bath formula reheater 3, and water bath formula reheater 3 sets up the reheat pipeline of two sets of parallels, and import is responsible for 1 and divides two tunnel: one path of the air-temperature gasifier is connected with a first air-temperature gasifier 2 and a second air-temperature gasifier 4 through a tenth valve 6, the inlet end of the first air-temperature gasifier 2 is connected with the tenth valve 6 through a first branch pipe 5 and a first valve 7, and the inlet end of the second air-temperature gasifier 4 is connected with the tenth valve 6 through a sixth branch pipe 16 and a sixth valve 15; the other path is connected with the inlet end of a second set of reheating pipelines of the water bath type reheating device 3 through a ninth valve 22 and a fourth valve 21 and a fourth branch pipe 13. The outlet end of the first air-temperature type gasifier 2 is connected with the inlet end of the first set of reheating pipelines of the water bath type reheater 3 through a second branch pipe 9 and a second valve 8, and the outlet end of the second air-temperature type gasifier 4 is connected with the inlet end of the first set of reheating pipelines of the water bath type reheater 3 through a seventh branch pipe 18 and a seventh valve 17. A fifth branch pipe 14 and a fifth valve 12 which are communicated with the inlet end of the first air-temperature type gasifier 2 and the outlet end of the second set of reheating pipelines of the water-bath type reheating device 3 are arranged between the first air-temperature type gasifier 2 and the water-bath type reheating device 3. An eighth branch pipe 19 and an eighth valve 20 which are communicated with the inlet end of the second air-temperature type gasifier and the fifth branch pipe 14 are arranged between the second air-temperature type gasifier 4 and the fifth branch pipe 14. The outlet end of the first set of reheating pipeline of the water bath type reheating device 3 is connected with a downstream user end through a third branch pipe 11 and a third valve 10.
The utility model discloses a 1 upper shed sets up fourth branch pipe 13 in the import is responsible for, and second set reheat pipeline in water bath reheater 3 is introduced with LNG to fourth branch pipe 13, and LNG is carried to air temperature formula vaporizer one 2 or air temperature formula vaporizer two 4 through fifth branch pipe 14 after being heated, sends into water bath formula reheater 3 after reheating, and final adjustment exit temperature is higher than temperature sensor T01 settlement temperature.
The utility model discloses a control valve accessible manual control realizes opening or closing, also accessible automatic control mode and temperature sensor linkage. When adopting automatic control mode and temperature sensor linkage, the utility model discloses still include the PLC controller and set up temperature sensor T01 on the third branch pipe, first valve 7, fourth valve 21, fifth valve 12, sixth valve 15 and tenth valve 6 are connected with the control end electricity of PLC controller respectively, and temperature sensor T01 is connected with the signal input part electricity of PLC controller.
The utility model discloses can be according to ambient temperature, start gasification equipment in three step.
1) And opening a tenth valve 6, a ninth valve 22, a second valve 8 and an eighth valve 20, closing a fourth valve 21 and a fifth valve 12, allowing the LNG to enter the first branch pipe 5 of the first air-temperature gasifier 2 or the sixth branch pipe 16 of the second air-temperature gasifier 4 through the inlet main pipe 1, and allowing the LNG to enter the water bath type reheater 3 after being gasified through the first air-temperature gasifier 2 or the second air-temperature gasifier 4 when opening the first valve 7 and the second valve 8 or the sixth valve 15 and the seventh valve 17. When the temperature of the gaseous natural gas in the third branch pipe 11 at the outlet of the water bath type reheater 3 is higher than the set temperature of the temperature sensor T01, the gaseous natural gas is sent to the downstream user end by opening the third valve 10, and the system operates normally.
2) When the temperature of the gaseous natural gas in the third branch pipe 11 at the outlet of the water-bath type recuperator 3 is lower than the set temperature of the temperature sensor T01 in the process flow of 1), the tenth valve 6 and the third valve 10 are closed. And when the fourth valve 21 and the fifth valve 12 are opened, the LNG flows to the water bath type reheater 3 from the fourth branch pipe 13, is heated by the water bath type reheater 3, returns to the first air temperature type gasifier 2 or the second air temperature type gasifier 4 through the fifth branch pipe 14, is further heated by the first air temperature type gasifier 2 or the second air temperature type gasifier 4, and then enters the water bath type reheater 3. When the temperature of the natural gas in the third branch pipe 11 at the outlet of the water bath type reheater 3 is higher than the set temperature of the temperature sensor T01, the third valve 10 is opened, and the gaseous natural gas is sent to a downstream user end, so that the system operates normally. If the temperature of the natural gas in the third branch pipe 11 at the outlet of the water bath type reheater 3 is still lower than the set temperature of the temperature sensor T01, the thermal power of the reheater 3 should be increased in a chain manner until the outlet temperature is higher than the set temperature of the temperature sensor T01.
3) In the process flow of the step 1), the temperature of the low-temperature natural gas in the third branch pipe 11 at the outlet of the water bath type reheater 3 is higher than the set temperature of the temperature sensor T01, but the defrosting speed of the two-way air-temperature gasifier is slower. The ninth valve 22 is slightly opened, the fourth valve 21 is fully opened, partial LNG is shunted and enters the fourth branch pipe 13, and after being heated by the water bath type reheater 3, the LNG returns to the inlet end of the standby air-temperature type gasifier (one air-temperature type gasifier or one air-temperature type gasifier is normally operated, and the other air-temperature type gasifier is standby) through the fifth branch pipe 14, so that the temperature of the medium at the inlet of the air-temperature type gasifier is increased, and defrosting is accelerated.
The utility model discloses specially adapted cold area's LNG vaporizing station. The utility model discloses can realize on original traditional LNG vaporizing station equipment basis, can be used to move LNG vaporizing station project transformation upgrading. The utility model discloses the flow is simple, safe and reliable.
Claims (3)
1. The utility model provides a LNG vaporizing station gasification facility, includes that the import is responsible for, air temperature formula vaporizer one and water bath formula double heater, its characterized in that: the inlet end of the first air-temperature gasifier is connected with the inlet main pipe through a first branch pipe and a first valve, the outlet end of the first air-temperature gasifier is connected with the inlet end of the water bath type reheater through a second branch pipe and a second valve, and the outlet end of the water bath type reheater is connected with a downstream user end through a third branch pipe and a third valve; and a fifth branch pipe and a fifth valve which are communicated with the inlet end of the air-temperature type gasifier and the outlet end of the water-bath type reheater are arranged between the first air-temperature type gasifier and the water-bath type reheater.
2. The LNG vaporizer plant of claim 1, wherein: the water bath type reheater is characterized by further comprising a second air-temperature type gasifier, the inlet end of the second air-temperature type gasifier is connected with the inlet main pipe through a sixth branch pipe and a sixth valve, the outlet end of the second air-temperature type gasifier is connected with the inlet end of the water bath type reheater through a seventh branch pipe and a seventh valve, and a seventh branch pipe and a seventh valve which are communicated with the inlet end of the second air-temperature type gasifier and the fifth branch pipe are arranged between the second air-temperature type gasifier and the fifth branch pipe.
3. The LNG vaporizer plant of claim 2, wherein: the first valve, the second valve, the fourth valve, the fifth valve and the sixth valve are pneumatic valves, the first valve, the second valve, the fourth valve, the fifth valve and the sixth valve are respectively electrically connected with the control end of the PLC, and the temperature sensor is electrically connected with the signal input end of the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920985844.4U CN210241175U (en) | 2019-06-27 | 2019-06-27 | LNG vaporizing station gasification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920985844.4U CN210241175U (en) | 2019-06-27 | 2019-06-27 | LNG vaporizing station gasification facility |
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| Publication Number | Publication Date |
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| CN210241175U true CN210241175U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920985844.4U Active CN210241175U (en) | 2019-06-27 | 2019-06-27 | LNG vaporizing station gasification facility |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217812A (en) * | 2021-06-24 | 2021-08-06 | 港华投资有限公司 | Technology and system for restraining cold fog and saving energy for LNG (liquefied Natural gas) gasification station |
| WO2023015837A1 (en) * | 2021-08-10 | 2023-02-16 | 吕宛潼 | Defrosting method for air-bath gasifiers of liquefied natural gas (lng) transmission and distribution station |
-
2019
- 2019-06-27 CN CN201920985844.4U patent/CN210241175U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217812A (en) * | 2021-06-24 | 2021-08-06 | 港华投资有限公司 | Technology and system for restraining cold fog and saving energy for LNG (liquefied Natural gas) gasification station |
| WO2023015837A1 (en) * | 2021-08-10 | 2023-02-16 | 吕宛潼 | Defrosting method for air-bath gasifiers of liquefied natural gas (lng) transmission and distribution station |
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