CN102537656A - Independent liquefied natural gas supply device - Google Patents
Independent liquefied natural gas supply device Download PDFInfo
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- CN102537656A CN102537656A CN2012100083931A CN201210008393A CN102537656A CN 102537656 A CN102537656 A CN 102537656A CN 2012100083931 A CN2012100083931 A CN 2012100083931A CN 201210008393 A CN201210008393 A CN 201210008393A CN 102537656 A CN102537656 A CN 102537656A
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- storage tank
- pipeline
- natural gas
- gas supply
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Abstract
The invention discloses an independent liquefied natural gas supply device, which comprises a storage tank, wherein the bottom of the storage tank is provided with an outlet; the outlet is connected with a gas supply pipeline; the gas supply pipeline is provided with a carburetor and a metering control system in sequence along the flow direction of natural gas; the storage tank is provided with an inlet and an exhaust opening; the inlet is connected with a liquid charging pipeline system; the exhaust opening is connected with a pressure release pipeline system; the storage tank is connected with a liquid level pressure detection system; the liquid level pressure detection system comprises an upper pipeline which is arranged at the top end of the storage tank and is provided with a needle valve, and a lower pipeline which is communicated with the bottom of the storage tank and is provided with a needle valve; a liquid level meter and a differential pressure transmitter are communicated between the upper pipeline and the lower pipeline; the upper pipeline is connected with a pressure gauge and a pressure transmitter; and the upper pipeline and the lower pipeline are provided with a GPS (Global Positioning System) pressure signal output port and a GPS liquid level signal output port for transmitting the pressure parameter and the liquid level parameter of the storage tank. The independent liquefied natural gas supply device has high safety performance, is easy to operate, and does not require continuous manual field monitoring.
Description
Technical field
The present invention relates to a kind of air feeder, be meant a kind of LNG Liquefied natural gas independent gas supply device especially.
Background technique
At present, LNG Liquefied natural gas (LNG) is applied to fuel such as replacement coal gas in life and has formed the sizable industry of scale as the fuel of high-efficiency cleaning.But LNG Liquefied natural gas (LNG) air supply system is confined to the gas station mode at present and builds, and cost is high, has significant limitation in the use.And for the situation of little consumption usefulness gas, like can't set up LNG Liquefied natural gas (LNG) vaporizing station and maybe need not set up the small-sized residential belt of LNG Liquefied natural gas (LNG) vaporizing station and then can't use away from city and pipe network.And the air supply system that also has some to utilize large-scale storage tank stores rock gas (LNG) to utilize; It is low that but these systems exist safety coefficient; Construction cost is high; Need near equipment, build monitoring chamber and monitor, and also need staff's policer operation constantly, practical application is got up very inconvenient.
For these reasons, be necessary to develop the independent gas supply device that a kind of Safety performance is high, need not the artificial monitoring of the moment at the scene.
Summary of the invention
Technical problem to be solved by this invention is: a kind of LNG Liquefied natural gas independent gas supply device is provided, and this LNG Liquefied natural gas independent gas supply device Safety performance is high, easy operating, need not artificial on-the-spot monitoring constantly.
For solving the problems of the technologies described above; Technological scheme of the present invention is: LNG Liquefied natural gas independent gas supply device, comprise storage tank, and the bottom of said storage tank is provided with delivery outlet; Said delivery outlet is connected with the supply air line that is used for to the user terminal air feed; Said supply air line upper edge natural gas flow offers inlet opening and relief opening to being provided with vaporizer and metering control system successively on the said storage tank, said inlet opening is connected with the charging line system; Said relief opening is connected with the pressure relief pipe system; Be connected with the liquid level pressure detecting system on the said storage tank, said liquid level pressure detecting system comprises the upper pipeline of the band needle type valve that is arranged at the storage tank top and the lower pipeline of the band needle type valve that is communicated with tank bottom, is communicated with level meter and differential pressure transmitter between said upper pipeline and the lower pipeline; Be connected with pressure gauge and pressure transmitter on the said upper pipeline, said upper pipeline and lower pipeline are provided with GPS pressure signal output port and the GPS liquid level signal output port that is used to transmit pressure of storage tank parameter and liquid level parameter.
As a kind of preferred scheme, be communicated with equalizing line between said upper pipeline and the lower pipeline, said equalizing line is provided with equilibrated valve.
As a kind of preferred scheme; Said charging line system comprises main topping up pipe and two topping up pipes that are communicated with main topping up pipe; Said two topping up pipes connect the top and the bottom of storage tank respectively, and the end of a topping up pipe on said top is stretched in the storage tank and is provided with atomising device.
As a kind of preferred scheme, on the said supply air line, be equipped with Emergeny Cutoff Valves on two charging lines, the control gas circuit of described Emergeny Cutoff Valves is communicated with tank top.
As a kind of preferred scheme; Tank body and outer tank body in said storage tank comprises; Be provided with heat insulation radiation proof thermoinsulation material in the cavity in said between tank body and the outer tank body, said cavity is connected with vacuum pumping device, and said outer tank body is provided with the vacuum test interface that is communicated with cavity.
As a kind of preferred scheme, said storage tank is provided with overflow passage, and said overflow passage is provided with relief valve.
As a kind of preferred scheme; Described LNG Liquefied natural gas independent gas supply device comprises and adds smelly system; Saidly add smelly system and comprise device for adding odor and electric-heating belt; Saidly add smelly system and comprise device for adding odor and electric-heating belt, saidly add smelly system and be installed on the output pipe and between vaporizer and metering control system.
After having adopted technique scheme; Effect of the present invention is: owing to be communicated with level meter and differential pressure transmitter between said upper pipeline and the lower pipeline; Be connected with pressure gauge and pressure transmitter on the said upper pipeline; Said upper pipeline and lower pipeline are provided with GPS pressure signal output port and the GPS liquid level signal output port that is used to transmit pressure of storage tank parameter and liquid level parameter; Can be in the control room through the pressure parameter and the liquid level parameter of transmission, real-time real-time monitoring, thereby the inconvenience of avoiding artificial on-site supervision to bring to said LNG Liquefied natural gas independent gas supply device.
Again because on the said supply air line, be equipped with Emergeny Cutoff Valves on two charging lines; The control gas circuit of described Emergeny Cutoff Valves is communicated with tank top; When taking place to reveal in the pipeline, utilize the gas in the storage tank to close Emergeny Cutoff Valves rapidly, avoid occurring security incident.
Because said storage tank comprises interior tank body and outer tank body, be provided with heat insulation radiation proof thermoinsulation material in the cavity between said interior tank body and the outer tank body again, said cavity is connected with vacuum pumping device; Said outer tank body is provided with the vacuum test interface that is communicated with cavity; Tank body can obtain and keep high vacuum for a long time, guarantees that day relative evaporation index is good, guarantees that the temperature increasing degree is in critical field in the working procedure; Pressure stability, transportation safety is reliable.
Again since described LNG Liquefied natural gas independent gas supply device comprise and add smelly system, saidly add smelly system and rock gas added smelly, can in time find in case reveal.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the flow chart of the embodiment of the invention;
In the accompanying drawing: 1. liquid level pressure detecting system; 2. storage tank; 21. vacuum pumping device; 22. vacuum test interface; 3. metering control system; 4. add smelly system; 41. device for adding odor; 42. electric-heating belt; 5. vaporizer; 6. overflow passage; 7. pressurized machine; 8. supply air line; 9. charging line system; A 91. charging line; 10.GPS pressure signal output port; 11.GPS liquid level signal output port.
Embodiment
Through specific embodiment the present invention is made further detailed description below.
As shown in Figure 1; LNG Liquefied natural gas independent gas supply device; Comprise storage tank 2, tank body and outer tank body in said storage tank 2 comprises are provided with heat insulation radiation proof thermoinsulation material in the cavity between said interior tank body and the outer tank body; Said cavity is connected with vacuum pumping device 21, and said outer tank body is provided with the vacuum test interface 22 that is communicated with cavity.Said storage tank 2 is provided with overflow passage 6, and said overflow passage 6 is provided with relief valve.
The bottom of said storage tank 2 is provided with delivery outlet; Said delivery outlet is connected with the supply air line 8 that is used for to the user terminal air feed; Offer inlet opening and relief opening on the said storage tank 2; Said inlet opening is connected with charging line system 9; Said relief opening is connected with the pressure relief pipe system, is connected with liquid level pressure detecting system 1 on the said storage tank 2, and said liquid level pressure detecting system 1 comprises the upper pipeline of the band needle type valve that is arranged at storage tank 2 tops and the lower pipeline of the band needle type valve that is communicated with storage tank 2 bottoms; Be communicated with level meter and differential pressure transmitter between said upper pipeline and the lower pipeline; Be connected with pressure gauge and pressure transmitter on the said upper pipeline, said upper pipeline and lower pipeline are provided with the GPS pressure signal output port 10 and GPS liquid level signal output port 11 that is used to transmit storage tank 2 pressure parameters and liquid level parameter, pressure parameter through transmission and liquid level parameter can be in the control room in real time to the real-time monitoring of said LNG Liquefied natural gas independent gas supply device.
In the present embodiment; Said LNG Liquefied natural gas independent gas supply device comprises and adds smelly system 4; Saidly add smelly system 4 and comprise device for adding odor 41 and electric-heating belt 42; Move towards vaporizer 5, device for adding odor 41, electric-heating belt 42, metering control system 3 are installed on the supply air line 8 successively along the output of rock gas, output to user terminal at last.
Said charging line system 9 comprises main topping up pipe and two charging lines 91 that are communicated with main topping up pipe; Said two charging lines 91 connect the top and the bottom of storage tank 2 respectively; The end of a charging line 91 on said top is stretched in the storage tank 2 and is provided with atomising device; Atomising device can become gaseous state with the liquid state of LNG Liquefied natural gas when air feed, storage tank 2 is cooled off rapidly.On the said supply air line 8, be equipped with Emergeny Cutoff Valves on two charging lines 91, the control gas circuit of described Emergeny Cutoff Valves is communicated with the top of storage tank 2, utilizes storage tank 2 interior gases to control the switching of Emergeny Cutoff Valves.Said charging line system 9 matches with pressurized machine 7, supply air line 8, liquid level pressure detecting system 1, regulates the pressure reduction in the storage tank 2.
Preferably, be communicated with equalizing line between said upper pipeline and the lower pipeline, said equalizing line is provided with equilibrated valve; In case when needing the maintenance instrument, need close the needle type valve on upper pipeline and the lower pipeline; And these two needle type valves can not be closed simultaneously, sequencing are arranged certainly, therefore; At this moment, as long as open equilibrated valve, and close the needle type valve on upper pipeline or the lower pipeline earlier; Through the effect of equalizing line, make the pressure at instrument two ends identical, thereby avoid instrument two ends pressure reduction excessive and damage closing needle type valve on lower pipeline or the upper pipeline then.
LNG Liquefied natural gas independent gas supply device according to the invention also can be used for other pipeline gass.
Claims (7)
1. LNG Liquefied natural gas independent gas supply device; Comprise storage tank; The bottom of said storage tank is provided with delivery outlet, and said delivery outlet is connected with the supply air line that is used for to the user terminal air feed, and said supply air line upper edge natural gas flow is to being provided with vaporizer and metering control system successively; Offer inlet opening and relief opening on the said storage tank; Said inlet opening is connected with the charging line system, and said relief opening is connected with the pressure relief pipe system, it is characterized in that: be connected with the liquid level pressure detecting system on the said storage tank; Said liquid level pressure detecting system comprises the upper pipeline of the band needle type valve that is arranged at the storage tank top and the lower pipeline of the band needle type valve that is communicated with tank bottom; Be communicated with level meter and differential pressure transmitter between said upper pipeline and the lower pipeline, be connected with pressure gauge and pressure transmitter on the said upper pipeline, said upper pipeline and lower pipeline are provided with GPS pressure signal output port and the GPS liquid level signal output port that is used to transmit pressure of storage tank parameter and liquid level parameter.
2. LNG Liquefied natural gas independent gas supply device as claimed in claim 1 is characterized in that: be communicated with equalizing line between said upper pipeline and the lower pipeline, said equalizing line is provided with equilibrated valve.
3. according to claim 1 or claim 2 LNG Liquefied natural gas independent gas supply device; It is characterized in that: said charging line system comprises main topping up pipe and two topping up pipes that are communicated with main topping up pipe; Said two topping up pipes connect the top and the bottom of storage tank respectively, and the end of a topping up pipe on said top is stretched in the storage tank and is provided with atomising device.
4. LNG Liquefied natural gas independent gas supply device as claimed in claim 3 is characterized in that: on the said supply air line, be equipped with Emergeny Cutoff Valves on two charging lines, the control gas circuit of described Emergeny Cutoff Valves is communicated with tank top.
5. LNG Liquefied natural gas independent gas supply device as claimed in claim 4; It is characterized in that: tank body and outer tank body in said storage tank comprises; Be provided with heat insulation radiation proof thermoinsulation material in the cavity in said between tank body and the outer tank body; Said cavity is connected with vacuum pumping device, and said outer tank body is provided with the vacuum test interface that is communicated with cavity.
6. LNG Liquefied natural gas independent gas supply device as claimed in claim 5, it is characterized in that: said storage tank is provided with overflow passage, and said overflow passage is provided with relief valve.
7. LNG Liquefied natural gas independent gas supply device as claimed in claim 1; It is characterized in that: described LNG Liquefied natural gas independent gas supply device comprises and adds smelly system; Saidly add smelly system and comprise device for adding odor and electric-heating belt, saidly add smelly system and be installed on the output pipe and between vaporizer and metering control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100083931A CN102537656A (en) | 2012-01-12 | 2012-01-12 | Independent liquefied natural gas supply device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100083931A CN102537656A (en) | 2012-01-12 | 2012-01-12 | Independent liquefied natural gas supply device |
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| CN102537656A true CN102537656A (en) | 2012-07-04 |
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| CN2012100083931A Pending CN102537656A (en) | 2012-01-12 | 2012-01-12 | Independent liquefied natural gas supply device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019359A (en) * | 2014-06-09 | 2014-09-03 | 山东交通学院 | Protection device of fuel gas system of LNG single-fuel ship |
| CN104500971A (en) * | 2014-12-25 | 2015-04-08 | 十堰厚发汽车零部件有限公司 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder system capable of automatically supercharging |
| CN104929813A (en) * | 2015-06-23 | 2015-09-23 | 杭叉集团股份有限公司 | LNG storage and supply system for forklift |
| CN105216803A (en) * | 2015-10-30 | 2016-01-06 | 南车资阳机车有限公司 | A kind of methane safe-guard system of hybrid fuel locomotive |
| CN105782716A (en) * | 2016-03-20 | 2016-07-20 | 北京绿能高科天然气应用技术研究院有限公司 | Liquid density measurement method applied to LNG storage tank |
| CN109915726A (en) * | 2019-03-29 | 2019-06-21 | 无锡海核装备科技有限公司 | A kind of Liquefied Natural Gas fuel tank peculiar to vessel |
| CN110836328A (en) * | 2019-10-31 | 2020-02-25 | 浙江金象科技有限公司 | Prizing tank |
| CN114877251A (en) * | 2022-06-09 | 2022-08-09 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen fuel tank pipeline system for liquid hydrogen ship |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019359A (en) * | 2014-06-09 | 2014-09-03 | 山东交通学院 | Protection device of fuel gas system of LNG single-fuel ship |
| CN104500971A (en) * | 2014-12-25 | 2015-04-08 | 十堰厚发汽车零部件有限公司 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder system capable of automatically supercharging |
| CN104929813A (en) * | 2015-06-23 | 2015-09-23 | 杭叉集团股份有限公司 | LNG storage and supply system for forklift |
| CN105216803A (en) * | 2015-10-30 | 2016-01-06 | 南车资阳机车有限公司 | A kind of methane safe-guard system of hybrid fuel locomotive |
| CN105782716A (en) * | 2016-03-20 | 2016-07-20 | 北京绿能高科天然气应用技术研究院有限公司 | Liquid density measurement method applied to LNG storage tank |
| CN109915726A (en) * | 2019-03-29 | 2019-06-21 | 无锡海核装备科技有限公司 | A kind of Liquefied Natural Gas fuel tank peculiar to vessel |
| CN110836328A (en) * | 2019-10-31 | 2020-02-25 | 浙江金象科技有限公司 | Prizing tank |
| CN114877251A (en) * | 2022-06-09 | 2022-08-09 | 江苏国富氢能技术装备股份有限公司 | Liquid hydrogen fuel tank pipeline system for liquid hydrogen ship |
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Application publication date: 20120704 |