CN219673957U - LNG gasification gas supply device - Google Patents
LNG gasification gas supply device Download PDFInfo
- Publication number
- CN219673957U CN219673957U CN202321227507.1U CN202321227507U CN219673957U CN 219673957 U CN219673957 U CN 219673957U CN 202321227507 U CN202321227507 U CN 202321227507U CN 219673957 U CN219673957 U CN 219673957U
- Authority
- CN
- China
- Prior art keywords
- valve
- lng
- pipeline
- reserved
- inlet valve
- 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.)
- Active
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000006200 vaporizer Substances 0.000 claims description 14
- 230000008016 vaporization Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 36
- 239000002737 fuel gas Substances 0.000 abstract description 2
- 239000003949 liquefied natural gas Substances 0.000 description 71
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to the technical field of fuel gas, in particular to an LNG gasification gas supply device, which comprises a liquid outlet pipeline, a first gasification pipeline and a second gasification pipeline, wherein the first gasification pipeline and the second gasification pipeline are connected in parallel and then are connected with the liquid outlet pipeline in series, the first gasification pipeline comprises a first inlet valve, a first LNG air temperature type gasifier, a first outlet valve and a first one-way valve, the first inlet valve, the first LNG air temperature type gasifier, the first outlet valve and the first one-way valve are sequentially communicated, the second gasification pipeline comprises a second inlet valve, a second LNG air temperature type gasifier, an EAG air temperature type heater, a second outlet valve and a second one-way valve, the second inlet valve, the second LNG air temperature type gasifier, the EAG air temperature type heater, the second outlet valve and the second one-way valve are sequentially communicated, and the storage tank is utilized for storing, so that the cost of purchasing LNG in winter is reduced, and the gas supply is carried out for users through double pipelines, and the capacity of protecting downstream users is increased when the gas is wasted.
Description
Technical Field
The utility model relates to the technical field of fuel gas, in particular to an LNG gasification gas supply device.
Background
LNG is liquefied natural gas, which is produced from a gas field and is liquefied at a very low temperature to obtain natural gas that is liquid at normal pressure. The liquefied natural gas is very little in pollution to air after being combusted, and the heat emitted is large, so that the liquefied natural gas is an advanced energy source.
The price of LNG is influenced by seasons and social environment, the price is unstable, the average price difference of LNG in light and vigorous seasons is about 1000 yuan/ton each year according to the rule of the LNG industry, and the price of pipeline gas intake in winter is at least 20% higher than the price in summer. It is expensive to purchase LNG in winter, thereby providing a device capable of storing LNG and supplying air to users.
Disclosure of Invention
The utility model aims to provide an LNG gasification gas supply device which utilizes a storage tank to store, reduces the cost of purchasing LNG in winter, supplies gas for users through double pipelines and increases the capability of protecting downstream users during gas waste.
In order to achieve the above object, the utility model provides an LNG gasification gas supply device, which comprises a liquid outlet pipeline, a first gasification pipeline and a second gasification pipeline, wherein the first gasification pipeline and the second gasification pipeline are connected in parallel and then connected in series with the liquid outlet pipeline, the first gasification pipeline comprises a first inlet valve, a first LNG air temperature type gasifier, a first outlet valve and a first check valve, the first inlet valve, the first LNG air temperature type gasifier, the first outlet valve and the first check valve are sequentially communicated, the second gasification pipeline comprises a second inlet valve, a second LNG air temperature type gasifier, an EAG air temperature type heater, a second outlet valve and a second check valve, and the second inlet valve, the second LNG air temperature type gasifier, the EAG air temperature type heater, the second outlet valve and the second check valve are sequentially communicated.
The liquid outlet pipeline comprises a storage tank, a liquid outlet control valve and an emergency shut-off valve, wherein the storage tank, the liquid outlet control valve and the emergency shut-off valve are sequentially connected in series, and the output end of the emergency shut-off valve is communicated with the input ends of the first inlet valve and the second inlet valve.
The LNG gasification gas supply device further comprises a vent pipeline, wherein the vent pipeline is respectively communicated with the output end of the liquid outlet control valve, the output end of the emergency cut-off valve, the output end of the first one-way valve and the output end of the second one-way valve.
The LNG gasification gas supply device further comprises a reserved inlet valve bank, wherein the reserved inlet valve bank comprises a first reserved inlet valve and a second reserved inlet valve, the first reserved inlet valve is communicated with the input end of the first inlet valve and the input end of the second inlet valve, and the second reserved inlet valve is communicated with the input end of the first inlet valve and the input end of the second inlet valve.
The LNG gasification gas supply device further comprises a reserved outlet valve set, wherein the reserved outlet valve set comprises a first reserved outlet valve and a second reserved outlet valve, the first reserved outlet valve is communicated with the output end of the first one-way valve and the output end of the second one-way valve, and the second reserved inlet valve is communicated with the output end of the first one-way valve and the output end of the second one-way valve.
According to the LNG gasification gas supply device, the first gasification pipeline and the second gasification pipeline are both used for converting liquefied LNG into gas, the liquid outlet pipeline is used for storing the liquefied LNG, during normal production operation, LNG liquid enters the first LNG air temperature type gasifier from the liquid outlet pipeline, is gasified into gas, then enters the pressure regulating metering pry, and is connected into the medium-pressure outlet pipeline after being odorized; when the total outlet temperature of the first LNG air temperature type gasifier is lower than 5 ℃, an automatic alarm is given, the manual switching to the second LNG air temperature type gasifier is prompted, the reheater is opened, the EAG air temperature type heater is arranged in the station area, and the low-temperature overpressure is utilized to diffuse the heat of the gas and the air, so that the rapid diffusion of the gas is ensured. This design can realize the double-circuit air feed, and when the low reaches the peak period with gas, the flow is not enough for the user of low reaches, can two first LNG empty temperature formula vaporizer with the empty temperature formula vaporizer of second LNG is parallelly connected to be used, guarantee low reaches air feed that can be better. The storage tank is used for storing, so that the cost of purchasing LNG in winter is reduced, the LNG is supplied to users through double pipelines, and the capability of protecting downstream users in the process of gas waste is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a structural frame diagram of a first embodiment of the present utility model.
Fig. 2 is a structural frame diagram of a second embodiment of the present utility model.
101-first inlet valve, 102-first LNG hollow-temperature vaporizer, 103-first outlet valve, 104-first check valve, 105-second inlet valve, 106-second LNG hollow-temperature vaporizer, 107-EAG hollow-temperature heater, 108-second outlet valve, 109-second check valve, 110-storage tank, 111-liquid control valve, 112-emergency shut-off valve, 113-vent line, 201-first reserved inlet valve, 202-second reserved inlet valve, 203-first reserved outlet valve, 204-second reserved outlet valve.
Detailed Description
The following detailed description of embodiments of the utility model, examples of which are illustrated in the accompanying drawings and, by way of example, are intended to be illustrative, and not to be construed as limiting, of the utility model.
The first embodiment of the utility model is as follows:
referring to fig. 1, fig. 1 is a structural frame diagram of a first embodiment of the present utility model. The utility model provides an LNG gasification gas supply device, which comprises a liquid outlet pipeline, a first gasification pipeline and a second gasification pipeline, wherein the first gasification pipeline comprises a first inlet valve 101, a first LNG air-temperature gasifier 102, a first outlet valve 103 and a first one-way valve 104, and the second gasification pipeline comprises a second inlet valve 105, a second LNG air-temperature gasifier 106, an EAG air-temperature heater 107, a second outlet valve 108 and a second one-way valve 109;
for this embodiment, the first gasification pipeline and the second gasification pipeline are connected in parallel and then connected in series with the liquid outlet pipeline, the first inlet valve 101, the first LNG air-temperature gasifier 102, the first outlet valve 103 and the first check valve 104 are sequentially connected, and the second inlet valve 105, the second LNG air-temperature gasifier 106, the EAG air-temperature heater 107, the second outlet valve 108 and the second check valve 109 are sequentially connected. The first gasification pipeline and the second gasification pipeline are both used for converting liquefied LNG into gas, the liquid outlet pipeline is used for storing the liquefied LNG, during normal production operation, LNG liquid enters the first LNG air-temperature gasifier 102 from the liquid outlet pipeline, is gasified into gas, enters the pressure regulating metering pry, and is accessed into the medium-pressure outlet pipeline after being odorized; when the total outlet temperature of the first LNG air temperature type gasifier 102 is lower than 5 ℃, an automatic alarm is given to prompt manual switching to the second LNG air temperature type gasifier 106, a reheater is opened, the EAG air temperature type heater 107 is arranged in a station area, and the heat of the low-temperature overpressure diffused gas and the air is utilized to ensure that the diffused gas is diffused as soon as possible. This design can realize the double-circuit air feed, and when the low reaches the peak period with gas, the flow is not enough for the downstream user, can two first LNG empty temperature formula vaporizer 102 with the empty temperature formula vaporizer 106 of second LNG is parallelly connected to be used, guarantee low reaches air feed that can be better.
Secondly, the liquid outlet pipeline comprises a storage tank 110, a liquid outlet control valve 111 and an emergency shut-off valve 112, wherein the storage tank 110, the liquid outlet control valve 111 and the emergency shut-off valve 112 are sequentially connected in series, and the output end of the emergency shut-off valve 112 is communicated with the input ends of the first inlet valve 101 and the second inlet valve 105. The storage tank 110 is used for storing liquid LNG, the liquid outlet control valve 111 is used for controlling the liquid outlet speed, and the emergency cut-off valve 112 is used for cutting off the connection between the storage tank 110 and the first gasification pipeline and the second gasification pipeline.
In addition, the LNG vaporizing and supplying device further includes a vent line 113, and the vent line 113 is respectively communicated with the output end of the liquid outlet control valve 111, the output end of the emergency cut-off valve 112, the output end of the first check valve 104, and the output end of the second check valve 109. The vent line 113 is used for venting LNG for protection.
When the LNG gasification gas supply device is used, in normal production operation, LNG in the storage tank 110 is pressurized through the storage tank 110 pressurizing pry, then LNG liquid is pressed into the first LNG air temperature gasifier 102, gasified into gas, then enters the pressure regulating metering pry, and is connected into a medium-pressure outlet pipeline after being odorized; when the total outlet temperature of the first LNG air-temperature vaporizer 102 is lower than 5 ℃, an automatic alarm is given to prompt manual switching to the second LNG air-temperature vaporizer 106, a reheater is opened, the EAG air-temperature heater 107 is arranged in a station area, and the low-temperature overpressure is utilized to diffuse the heat of the gas and the air, so that the gas is ensured to diffuse as soon as possible. The use of the storage tank 110 for storage reduces the cost of purchasing LNG in winter and provides the user with air through double pipes, increasing the ability to protect downstream users from air.
The second embodiment of the utility model is as follows:
on the basis of the first embodiment, please refer to fig. 2, fig. 2 is a structural frame diagram of a second embodiment of the present utility model. The LNG gasification gas supply device of the present embodiment further includes a reserved inlet valve set and a reserved outlet valve set, where the reserved inlet valve set includes a first reserved inlet valve 201 and a second reserved inlet valve 202, and the reserved outlet valve set includes a first reserved outlet valve 203 and a second reserved outlet valve 204;
for this embodiment, the first reserved inlet valve 201 is in communication with the input end of the first inlet valve 101 and the input end of the second inlet valve 105, the second reserved inlet valve 202 is in communication with the input end of the first inlet valve 101 and the input end of the second inlet valve 105, the first reserved outlet valve 203 is in communication with the output end of the first check valve 104 and the output end of the second check valve 109, and the second reserved inlet valve 202 is in communication with the output end of the first check valve 104 and the output end of the second check valve 109. The first reserved inlet valve 201 and the second reserved inlet valve 202 are used for LNG make-up, and the first reserved outlet valve 203 and the second reserved outlet valve 204 are used for LNG discharge.
When the LNG gasification gas supply device is used, in normal production operation, LNG in the storage tank 110 is pressurized through the storage tank 110 pressurizing pry, then LNG liquid is pressed into the first LNG air temperature gasifier 102, gasified into gas, then enters the pressure regulating metering pry, and is connected into a medium-pressure outlet pipeline after being odorized; when the total outlet temperature of the first LNG air-temperature vaporizer 102 is lower than 5 ℃, an automatic alarm is given to prompt manual switching to the second LNG air-temperature vaporizer 106, a reheater is opened, the EAG air-temperature heater 107 is arranged in a station area, the low-temperature overpressure gas and the heat of air are utilized to ensure that the gas is diffused as soon as possible, after the LNG in the storage tank 110 is used up, the LNG can be supplied through the first reserved inlet valve 201 and the second reserved inlet valve 202, and when the LNG is supplied too much, the LNG can be discharged through the first reserved outlet valve 203 and the second reserved outlet valve 204. The use of the storage tank 110 for storage reduces the cost of purchasing LNG in winter and provides the user with air through double pipes, increasing the ability to protect downstream users from air.
The foregoing disclosure is only illustrative of one or more preferred embodiments of the present utility model, and it is not intended to limit the scope of the claims hereof, as persons of ordinary skill in the art will understand that all or part of the processes for practicing the embodiments described herein may be practiced with equivalent variations in the claims, which are within the scope of the utility model.
Claims (5)
1. An LNG gasification gas supply device is characterized in that,
including liquid pipeline, first gasification pipeline and second gasification pipeline, first gasification pipeline with the parallelly connected back of second gasification pipeline is established ties with liquid pipeline, first gasification pipeline includes first entry valve, first LNG empty temperature formula vaporizer, first outlet valve and first check valve, first entry valve first LNG empty temperature formula vaporizer, first outlet valve with first check valve communicates in proper order, second gasification pipeline includes second entry valve, second LNG empty temperature formula vaporizer, EAG empty temperature formula heater, second outlet valve and second check valve, second entry valve second LNG empty temperature formula vaporizer EAG empty temperature formula heater, second outlet valve and second check valve communicates in proper order.
2. The LNG vaporizing and supplying device according to claim 1, wherein,
the liquid outlet pipeline comprises a storage tank, a liquid outlet control valve and an emergency shut-off valve, wherein the storage tank, the liquid outlet control valve and the emergency shut-off valve are sequentially connected in series, and the output end of the emergency shut-off valve is communicated with the input ends of the first inlet valve and the second inlet valve.
3. The LNG vaporizing and supplying device according to claim 2, wherein,
the LNG gasification gas supply device further comprises a vent pipeline, wherein the vent pipeline is respectively communicated with the output end of the liquid outlet control valve, the output end of the emergency cut-off valve, the output end of the first one-way valve and the output end of the second one-way valve.
4. The LNG vaporizing and supplying device according to claim 3, wherein,
the LNG gasification gas supply device further comprises a reserved inlet valve bank, wherein the reserved inlet valve bank comprises a first reserved inlet valve and a second reserved inlet valve, the first reserved inlet valve is communicated with the input end of the first inlet valve and the input end of the second inlet valve, and the second reserved inlet valve is communicated with the input end of the first inlet valve and the input end of the second inlet valve.
5. The LNG vaporizing and supplying device according to claim 4, wherein,
the LNG gasification gas supply device further comprises a reserved outlet valve bank, wherein the reserved outlet valve bank comprises a first reserved outlet valve and a second reserved outlet valve, the first reserved outlet valve is communicated with the output end of the first one-way valve and the output end of the second one-way valve, and the second reserved inlet valve is communicated with the output end of the first one-way valve and the output end of the second one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321227507.1U CN219673957U (en) | 2023-05-19 | 2023-05-19 | LNG gasification gas supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321227507.1U CN219673957U (en) | 2023-05-19 | 2023-05-19 | LNG gasification gas supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219673957U true CN219673957U (en) | 2023-09-12 |
Family
ID=87897430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321227507.1U Active CN219673957U (en) | 2023-05-19 | 2023-05-19 | LNG gasification gas supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219673957U (en) |
-
2023
- 2023-05-19 CN CN202321227507.1U patent/CN219673957U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206093514U (en) | BOG recovery unit | |
| CN112610892A (en) | High-hydrogen-content natural gas pipeline station safety discharge system and method | |
| CN219673957U (en) | LNG gasification gas supply device | |
| CN107906362A (en) | A kind of LNG gasification system | |
| CN215929209U (en) | Saving type liquid nitrogen storage tank | |
| CN206694826U (en) | A kind of LNG gasification system | |
| CN211780175U (en) | LNG vaporizing station intelligent operation system based on point supplies | |
| CN204962266U (en) | Flash distillation gas normal atmospheric temperature compression of small -size liquefied natural gas accepting station and recovery unit that liquefies | |
| CN217356473U (en) | LNG diffuses system | |
| CN104075115A (en) | Skid-mounted LNG (liquefied natural gas) bottle group gasification supply station | |
| CN209801145U (en) | Nitrogen gas supply system | |
| CN104075107B (en) | A kind of technological process of LNG gasification | |
| CN215764596U (en) | Domestic gas pipeline system in LNG peak regulation reserve station | |
| CN221197039U (en) | Natural gas pressure regulating sled | |
| CN206398366U (en) | A kind of oxyhydrogen continuous casting billet numerical control cutting machine intelligent gas-supplying system | |
| CN214119667U (en) | Precooling hydrogen recovery system of liquid hydrogen hydrogenation station | |
| CN2900795Y (en) | Electricity generating system using waste gas | |
| CN212273675U (en) | Liquefied natural gas cylinder diffuses recovery unit | |
| CN114811422B (en) | Sled dress formula LNG gasification equipment | |
| CN216079300U (en) | LNG emergency gasification device with adjustable heat value | |
| CN217684433U (en) | Be applied to gas-turbine peak regulation power plant's gas emission recovery system | |
| CN203500851U (en) | Heating type natural gas pressure reduction lever | |
| CN214306491U (en) | Emergent gasification equipment of natural gas | |
| CN219809773U (en) | Low-temperature liquid normal-pressure storage tank exhaust gas recycling device | |
| CN219177454U (en) | Cutting device convenient to overhauls of LNG gasification station air temperature formula vaporizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |