CN220930850U - LNG depressurization device for LNG unloading operation - Google Patents
LNG depressurization device for LNG unloading operation Download PDFInfo
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- CN220930850U CN220930850U CN202323029449.4U CN202323029449U CN220930850U CN 220930850 U CN220930850 U CN 220930850U CN 202323029449 U CN202323029449 U CN 202323029449U CN 220930850 U CN220930850 U CN 220930850U
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- Prior art keywords
- lng
- partition plate
- cooling cavity
- plate
- cooling
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- 238000001816 cooling Methods 0.000 claims abstract description 58
- 238000005192 partition Methods 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000000110 cooling liquid Substances 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000003949 liquefied natural gas Substances 0.000 description 51
- 238000002309 gasification Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
An LNG depressurization device used in LNG unloading operation is provided with a cooling cavity in the middle, a coil cavity is arranged on the periphery of the cooling cavity, a cooling coil is arranged in the coil cavity, cooling liquid is introduced into the cooling coil, a partition plate is arranged in the cooling cavity, a plurality of liquid collecting tanks are arranged on the partition plate, a spiral blade is arranged in the cooling cavity above the partition plate, and an LNG input pipe is arranged on the outer wall of a device shell at one end of the cooling cavity above the partition plate; a movable plate is arranged below the partition plate, and a liquid passing hole is formed in the movable plate; a pressurizing plate is arranged at one end in the cooling cavity below the partition plate, and the pressurizing plate moves horizontally through a pushing cylinder; an LNG output pipe is arranged on the outer wall of the device shell at one end of the cooling cavity below the partition plate. The utility model adopts the above-mentioned structure, can step down the LNG in the pipeline at LNG unloading in-process, reduce the storage tank internal pressure increase rate that the LNG that gets into the storage tank leads to, guarantee LNG unloading operating efficiency and promote the interior LNG storage capacity of storage tank.
Description
Technical Field
The utility model relates to the technical field of liquefied natural gas, in particular to an LNG depressurization device used in LNG unloading operation.
Background
In the LNG unloading process, the LNG continuously entering the storage tank gradually increases the internal pressure of the storage tank, when the LNG passes through the conveying pipeline, the LNG is influenced by the external temperature, gasification of liquid LNG can be caused, the pressure is increased, the pressure in the storage tank is finally caused to be too high, and great potential safety hazards exist.
Disclosure of Invention
The technical problem to be solved by the utility model is to provide the LNG depressurization device for the LNG unloading operation, which is used for depressurizing LNG in a pipeline in the LNG unloading process, reducing the pressure increase rate in the storage tank caused by the LNG entering the storage tank, ensuring the LNG unloading operation efficiency and improving the LNG storage capacity in the storage tank.
In order to solve the technical problems, the utility model adopts the following technical scheme: the LNG depressurization device comprises a device shell, wherein a cooling cavity is arranged in the middle of the device shell, a coil cavity is arranged on the periphery of the cooling cavity, a cooling coil is arranged in the coil cavity, cooling liquid is introduced into the cooling coil, a partition plate is arranged in the cooling cavity, a plurality of liquid collecting tanks are arranged on the partition plate, a helical blade is arranged in the cooling cavity above the partition plate, and an LNG input pipe is arranged on the outer wall of the device shell at one end of the cooling cavity above the partition plate;
a movable plate which is tightly attached to the partition plate is arranged below the partition plate, a plurality of liquid passing holes which are in one-to-one correspondence with the liquid collecting grooves are formed in the movable plate, a connecting rod which penetrates out of the device shell is arranged at one end of the movable plate, and the connecting rod drives the movable plate to reciprocate in the horizontal direction to realize the alignment and staggering of the liquid passing holes and the liquid collecting grooves;
A pressurizing plate is arranged at one end of the cooling cavity below the partition plate, and the pressurizing plate moves horizontally through a pushing cylinder arranged on the outer end wall of the device shell;
And an LNG output pipe is arranged on the outer wall of the device shell at one end of the cooling cavity below the partition plate, and the LNG output pipe and the LNG input pipe are arranged at different ends of the device shell.
In a preferred scheme, the liquid collecting groove on the partition plate is arranged at the bottom between two adjacent lower rotating blades on the spiral blade.
In the preferred scheme, cooling chamber one end of baffle top is equipped with steady voltage subassembly, communicates between steady voltage subassembly and the cooling chamber, is equipped with a piston plate in steady voltage subassembly, is equipped with the piston rod on the piston plate, and the piston rod wears to establish to steady voltage subassembly one end outside, overlaps on the piston rod and is equipped with first spring.
In the preferred scheme, one end of the connecting rod, which is positioned outside the device shell, is fixedly provided with a fixed plate, the outer wall of the device shell is provided with a motor with a cam, and the cam is contacted with one surface of the fixed plate, which faces the device shell.
In a preferred embodiment, a second spring is provided on the rod portion of the device housing.
In the preferred scheme, a photoelectric liquid level sensor is arranged on the side wall of the cooling cavity below the partition board, an electric control valve is arranged on the LNG output pipe, and the photoelectric liquid level sensor and the electric control valve are connected to the controller;
And a pressure sensor is also arranged on the side wall of the cooling cavity below the partition plate, and the pressure sensor is also connected to the controller.
The LNG depressurization device for LNG unloading operation provided by the utility model has the following beneficial effects by adopting the structure:
(1) Cooling liquid is continuously introduced into the cooling coil pipe, so that the purpose of cooling and depressurization of LNG in the cooling cavity is achieved, and the pressure expansion problem of the LNG is avoided;
(2) The LNG is pressurized by the pressurizing plate to be compressed, the stability of the liquefied state of the LNG is guaranteed, and the pressure stability of the LNG is further guaranteed by combining the cooling coil.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic diagram of the overall structure of the present utility model.
In the figure: the device comprises a device shell 1, a cooling cavity 2, a helical blade 3, a coil cavity 4, a cooling coil 5, an LNG input pipe 6, a pressure stabilizing component 7, a piston rod 8, a piston plate 9, a first spring 10, a partition plate 11, a liquid collecting tank 12, a movable plate 13, a liquid passing hole 14, a connecting rod 15, a fixed plate 16, a cam 17, a second spring 18, an LNG output pipe 19, an electric control valve 20, a photoelectric liquid level sensor 21, a controller 22, a pressure sensor 23, a push cylinder 24 and a pressurizing plate 25.
Detailed Description
In fig. 1, an LNG depressurization device for LNG unloading operation comprises a device housing 1, wherein a cooling cavity 2 is arranged in the middle of the device housing 1, a coil cavity 4 is arranged at the periphery of the cooling cavity 2, a cooling coil 5 is installed in the coil cavity 4, cooling liquid is introduced into the cooling coil 5, a partition plate 11 is arranged in the cooling cavity 2, a plurality of liquid collecting tanks 12 are arranged on the partition plate 11, a helical blade 3 is arranged in the cooling cavity 2 above the partition plate 11, and an LNG input pipe 6 is arranged on the outer wall of the device housing 1 at one end of the cooling cavity 2 above the partition plate 11;
A movable plate 13 which is tightly attached to the partition plate 11 is arranged below the partition plate 11, a plurality of liquid passing holes 14 which are in one-to-one correspondence with the liquid collecting grooves 12 are formed in the movable plate 13, a connecting rod 15 penetrating out of the device shell 1 is arranged at one end of the movable plate 13, and the connecting rod 15 drives the movable plate 13 to reciprocate in the horizontal direction to realize the alignment and staggering of the liquid passing holes 14 and the liquid collecting grooves 12;
A pressurizing plate 25 is arranged at one end in the cooling cavity 2 below the partition plate 11, and the pressurizing plate 25 horizontally moves through a pushing cylinder 24 arranged on the outer end wall of the device shell 1;
An LNG output pipe 19 is arranged on the outer wall of the device shell 1 at one end of the cooling cavity 2 below the partition plate 11, and the LNG output pipe 19 and the LNG input pipe 6 are arranged at different ends of the device shell 1.
In a preferred embodiment, the liquid collecting groove 12 on the partition 11 is arranged at the bottom between two adjacent lower rotating blades on the spiral blade 3.
In the preferred scheme, cooling chamber 2 one end of baffle 11 top is equipped with steady voltage subassembly 7, communicates between steady voltage subassembly 7 and the cooling chamber 2, is equipped with a piston plate 9 in steady voltage subassembly 7, is equipped with piston rod 8 on the piston plate 9, and piston rod 8 wears to establish outside steady voltage subassembly 7 to steady voltage subassembly 7 one end, overlaps on piston rod 8 and is equipped with first spring 10.
In a preferred embodiment, a fixing plate 16 is fixed to one end of the connecting rod 15 located outside the device housing 1, a motor with a cam 17 is provided on the outer wall of the device housing 1, and the cam 17 contacts with one surface of the fixing plate 16 facing the device housing 1.
In a preferred embodiment, a second spring 18 is provided on the portion of the connecting rod 15 located in the device housing 1.
In the preferred scheme, a photoelectric liquid level sensor 21 is arranged on the side wall of the cooling cavity 2 below the partition plate 11, an electric control valve 20 is arranged on the LNG output pipe 19, and the photoelectric liquid level sensor 21 and the electric control valve 20 are connected to a controller 22;
A pressure sensor 23 is also arranged on the side wall of the cooling cavity 2 below the partition plate 11, and the pressure sensor 23 is also connected to the controller 22.
The utility model discloses a LNG depressurization device for in LNG unloading operation when carrying out LNG unloading operation:
LNG unloaded by a transport vechicle is imported into the device casing 1 through LNG input tube 6, LNG spiral flow under helical blade 3 guide, liquefied after the LNG of gasification part realizes the cooling through cooling coil 5 in the flow process, steady voltage subassembly 7 is continuous to guarantee in this process that baffle 11 top cooling chamber 2 internal pressure stabilizes, avoid the device casing 1 damage that the pressure increase leads to, the LNG liquid part that forms after accomplishing liquefaction piles up in baffle 11 top, cam 17 relies on motor drive fly leaf 13 to move to the liquid through hole 14 and aligns collecting tank 12, after the LNG liquid part falls to baffle 11 below cooling chamber 2, fly leaf 13 resets under the effect of second spring 18, liquid through hole 14 staggers with collecting tank 12, the baffle 11 top continues to cool off liquefaction operation, and the pressurization board 25 of baffle 11 below is to the further compression volume of liquid LNG in the cavity, guarantee the liquefaction state stability of LNG, when the liquid LNG height after the pressurization reaches certain degree, photoelectric level sensor 21 transmits the signal to controller 22, controller 22 control electric control valve 20 opens, by output tube 19 import into the storage tank.
Claims (6)
1. LNG depressurization device for LNG unloading operation, comprising a device shell (1), and characterized in that: the device comprises a device shell, and is characterized in that a cooling cavity (2) is arranged in the middle of the device shell (1), a coil cavity (4) is arranged at the periphery of the cooling cavity (2), a cooling coil (5) is arranged in the coil cavity (4), cooling liquid is introduced into the cooling coil (5), a partition plate (11) is arranged in the cooling cavity (2), a plurality of liquid collecting tanks (12) are arranged on the partition plate (11), a helical blade (3) is arranged in the cooling cavity (2) above the partition plate (11), and an LNG input pipe (6) is arranged on the outer wall of the device shell (1) at one end of the cooling cavity (2) above the partition plate (11);
a movable plate (13) which is tightly attached to the partition plate (11) is arranged below the partition plate (11), a plurality of liquid passing holes (14) which are in one-to-one correspondence with the liquid collecting grooves (12) are formed in the movable plate (13), a connecting rod (15) penetrating out of the device shell (1) is arranged at one end of the movable plate (13), and the connecting rod (15) drives the movable plate (13) to reciprocate in the horizontal direction to realize the alignment and staggering of the liquid passing holes (14) and the liquid collecting grooves (12);
a pressurizing plate (25) is arranged at one end in the cooling cavity (2) below the partition plate (11), and the pressurizing plate (25) realizes horizontal movement through a pushing cylinder (24) arranged on the outer end wall of the device shell (1);
An LNG output pipe (19) is arranged on the outer wall of the device shell (1) at one end of the cooling cavity (2) below the partition plate (11), and the LNG output pipe (19) and the LNG input pipe (6) are arranged at different ends of the device shell (1).
2. The LNG depressurization device for use in LNG unloading operations as defined in claim 1, wherein: the liquid collecting groove (12) on the partition plate (11) is arranged at the bottom between two adjacent lower rotating blades on the spiral blade (3).
3. The LNG depressurization device for use in LNG unloading operations as defined in claim 1, wherein: one end of a cooling cavity (2) above the partition plate (11) is provided with a pressure stabilizing component (7), the pressure stabilizing component (7) is communicated with the cooling cavity (2), a piston plate (9) is arranged in the pressure stabilizing component (7), a piston rod (8) is arranged on the piston plate (9), the piston rod (8) penetrates through the pressure stabilizing component (7) to the outside of the pressure stabilizing component (7), and a first spring (10) is sleeved on the piston rod (8).
4. The LNG depressurization device for use in LNG unloading operations as defined in claim 1, wherein: one end of the connecting rod (15) positioned outside the device shell (1) is fixed with a fixed plate (16), the outer wall of the device shell (1) is provided with a motor with a cam (17), and the cam (17) is contacted with one surface of the fixed plate (16) facing the device shell (1).
5. The LNG depressurization device for use in LNG unloading as defined in claim 4 wherein: a second spring (18) is arranged on the connecting rod (15) part of the device shell (1).
6. The LNG depressurization device for use in LNG unloading operations as defined in claim 1, wherein: a photoelectric liquid level sensor (21) is arranged on the side wall of the cooling cavity (2) below the partition plate (11), an electric control valve (20) is arranged on the LNG output pipe (19), and the photoelectric liquid level sensor (21) and the electric control valve (20) are connected to a controller (22);
the side wall of the cooling cavity (2) below the partition plate (11) is also provided with a pressure sensor (23), and the pressure sensor (23) is also connected to the controller (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029449.4U CN220930850U (en) | 2023-11-09 | 2023-11-09 | LNG depressurization device for LNG unloading operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323029449.4U CN220930850U (en) | 2023-11-09 | 2023-11-09 | LNG depressurization device for LNG unloading operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220930850U true CN220930850U (en) | 2024-05-10 |
Family
ID=90966506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323029449.4U Active CN220930850U (en) | 2023-11-09 | 2023-11-09 | LNG depressurization device for LNG unloading operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220930850U (en) |
-
2023
- 2023-11-09 CN CN202323029449.4U patent/CN220930850U/en active Active
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