CN205026377U - LNG transports storage tank - Google Patents
LNG transports storage tank Download PDFInfo
- Publication number
- CN205026377U CN205026377U CN201520682240.4U CN201520682240U CN205026377U CN 205026377 U CN205026377 U CN 205026377U CN 201520682240 U CN201520682240 U CN 201520682240U CN 205026377 U CN205026377 U CN 205026377U
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- tank body
- pipeline
- valve
- interior
- inert gas
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- Expired - Fee Related
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Abstract
The utility model discloses a LNG transports storage tank, personally experience sth. Part of the body and the outer jar of body including the inner tank, the inner tank is personally experienced sth. Part of the body and is provided with inclosed vacuum heat insulating laminated outward between jar body, it is provided with two manometers, through two internal pressure condition of manometer real -time supervision inner tank, plays the effect of dual fail -safe, set up two gas vents, play the effect of dual fail -safe, be provided with vacuum test and controlling means to guarantee the interbedded vacuum nature of insulating against heat, prevent that the inner tank body is heated increased pressure and produces dangerously, be provided with liquid circulation pipeline, prevent to produce vortex phenomenon, still be provided with insert gas inlet and gas vent.
Description
Technical field
The utility model belongs to LNG Liquefied natural gas and transports technical field safely, relates in particular to a kind of LNG and transports storage tank.
Background technique
Rock gas is inflammable and explosive fuel, rock gas will be liquefied as LNG Liquefied natural gas LNG (LiquefiedNaturalGas) through ultralow temperature (-162 DEG C) normal pressure when storing transport, the very end and the danger of easily blasting and fill at it and store in transportation process and all there is not the certain potential safety hazard of person of the storage temperature of LNG, this just just proposes safe and reliable strict demand to its storage facilities and means of transportation.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of safe and reliable LNG to transport storage tank.
The utility model realizes by the following technical solutions:
A kind of LNG transports storage tank and comprises interior tank body and outer tank body, is provided with airtight vacuum heat-insulation interlayer between interior tank body and outer tank body;
Interior tank body has liquid entrance by install pipeline, and on pipeline, arrange the first valve,
The top of interior tank interior is provided with venting gas appliance, venting gas appliance is connected with relief opening for subsequent use with the relief opening outside outer tank body respectively by one-to-two pipeline, and on the main pipeline of one-to-two pipeline, be provided with the first pressure gauge and the second pressure gauge, the subtube of the one-to-two pipeline be connected with relief opening at venting gas appliance is provided with the second valve, the subtube of the one-to-two pipeline be connected with relief opening for subsequent use at venting gas appliance is provided with the second valve for subsequent use;
The bottom of interior tank interior is provided with inert gas uniform distributor, inert gas uniform distributor is connected by pipeline with the inert gas import outside outer tank body, and the pipeline be connected with inert gas import at inert gas uniform distributor is provided with the 3rd valve;
Vacuum heat-insulation interlayer between interior tank body and outer tank body has vacuumizing and exhausting mouth by install pipeline, and on pipeline, be disposed with vacuum degree measurement sensor, the 4th valve and vacuum pump;
Liquid circulation lines is provided with in vacuum heat-insulation interlayer between interior tank body and outer tank body, the circulation import of liquid circulation lines is arranged on the bottom of interior tank body, the loop exit of liquid circulation lines is arranged on the top of interior tank body, and liquid circulation lines sets gradually the 5th valve and recycle pump along circulation import to loop exit.
In technique scheme, outer tank body is provided with safety valve.
Advantage of the present utility model and beneficial effect are:
By tank body internal pressure situation in the first pressure gauge and the second pressure gauge Real-Time Monitoring, control the second valve or the second valve unlatching (opening the second valve for subsequent use when the second valve goes wrong) for subsequent use when pressure is excessive, internal tank interior is carried out exitting the pressure reduced in interior tank body and is prevented pressure increase and blast; Adopt the first pressure gauge and the second pressure gauge to carry out monitoring can prevent because one of them pressure gauge is malfunctioning and cause potential safety hazard simultaneously, thus add the validity of pressure monitoring, play the effect of dual fail-safe.Simultaneously, adopt by relief opening and relief opening for subsequent use and control the double-exhaust hierarchy of control design that its each self-purging second valve and the second valve for subsequent use form, the valve because of one of them relief opening can be prevented equally malfunctioning and cause potential safety hazard, thus add the validity of exhaust, play dual fail-safe effect equally.
When carrying out the canned work of rock gas (especially first canned or when there is more air in interior tank body), in inner storage tank, inert gas is filled with by inert gas import and inert gas uniform distributor, and by venting gas appliance, the air in inner storage tank is discharged from relief opening, with the requirement making the content in the gas in interior tank body reach safe, prevent air and rock gas mixing from causing danger.
By the degree of vacuum in vacuum degree measurement sensor Real-Time Monitoring interlayer, when degree of vacuum declines, (between interior tank body and outer tank body, interlayer can not be completely airtight, its degree of vacuum can slowly decline under normal circumstances), 4th valve is opened vacuum pump work simultaneously and is vacuumized, thus ensure the vacuum heat-insulation of interlayer, prevent interior tank body thermal stress from increasing and produce danger.
The LNG Liquefied natural gas repeatedly filled in interior tank body can be made fully to mix by ON cycle pump and the 5th valve, prevent that vortex phenomenon (in LNG Storage, Transport process, a kind of non-stability phenomenon being known as vortex can occur.Vortex is owing to filling new LNG liquid in the low temperature storing tank that LNG is housed, or makes the liquid generation layering in storage tank due to the nitrogen preferential evaporation in LNG.Each layer liquid after layering, under storage tank perisporium leaks the heating of heat, forms separately independently natural convection circulation.This circulation makes the density of each layer liquid constantly change, and when the density approximately equal of adjacent two layers liquid, strong mixing will occur two liquid layers, thus it is accidents caused to cause LNG Liquefied natural gas overheated in storage tank to evaporate in a large number).
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: G-1 is interior tank body, G-2 is outer tank body, and a is venting gas appliance, b is inert gas uniform distributor, and K1 is liquid entrance, and K2 is relief opening, K2-1 is relief opening for subsequent use, K3 is inert gas import, and K4 is vacuumizing and exhausting mouth, and L1 is liquid circulation lines, P1 is the first pressure gauge, P2 is the second pressure gauge, and R is vacuum degree measurement sensor, and D1 is vacuum pump, D2 is recycle pump, V1 is the first valve, and V2 is the second valve, and V2-1 is the second valve for subsequent use, V3 is the 3rd valve, V4 is the 4th valve, and V5 is the 5th valve, and S1 is safety valve.
Embodiment
The technical solution of the utility model is further illustrated below in conjunction with specific embodiment.
As shown in Figure 1, a kind of LNG involved by the utility model transports storage tank and comprises interior tank body G-1 and outer tank body G-2, interior tank body is for storing LNG Liquefied natural gas, airtight vacuum heat-insulation interlayer is provided with between interior tank body G-1 and outer tank body G-2, the LNG Liquefied natural gas of interior tank interior and the heat insulation of the external world is realized, the danger of blasting to avoid LNG Liquefied natural gas Yin Wendu rising vaporization to cause the pressure increase of interior tank body by vacuum heat-insulation interlayer.
Interior tank body G-1 has liquid entrance K1 by install pipeline, and on pipeline, arrange the first valve V1, completes the canned of LNG Liquefied natural gas and discharging operation by liquid entrance K1, and the first valve V1 controls the opening and closing state of liquid entrance K1.
The top of interior tank body G-1 inside is provided with venting gas appliance a, venting gas appliance a is connected with relief opening K2-1 for subsequent use with the relief opening K2 outside outer tank body respectively by one-to-two pipeline, and on the main pipeline of one-to-two pipeline, be provided with the first pressure gauge P1 and the second pressure gauge P2, the subtube of the one-to-two pipeline be connected with relief opening K2 at venting gas appliance a is provided with the second valve V2, the subtube of the one-to-two pipeline be connected with relief opening K2-1 for subsequent use at venting gas appliance a is provided with the second valve V2-1 for subsequent use; Tank body G-1 internal pressure situation in first pressure gauge P1 and the second pressure gauge P2 Real-Time Monitoring, control the second valve V2 or the second valve V2 unlatching (opening the second valve V2 for subsequent use when the second valve V2 goes wrong) for subsequent use when pressure is excessive, internal tank body G-1 inside is carried out exitting the pressure reduced in interior tank body and is prevented pressure increase and blast; Adopt the first pressure gauge P1 and the second pressure gauge P2 to carry out monitoring can prevent because one of them pressure gauge is malfunctioning and cause potential safety hazard simultaneously, thus add the validity of pressure monitoring, play the effect of dual fail-safe.Simultaneously, adopt by relief opening K2 and relief opening K2-1 for subsequent use and control the double-exhaust hierarchy of control design that its each self-purging second valve V2 and the second valve V2-1 for subsequent use form, the valve because of one of them relief opening can be prevented equally malfunctioning and cause potential safety hazard, thus add the validity of exhaust, play dual fail-safe effect equally.
The bottom of interior tank body G-1 inside is provided with inert gas uniform distributor b, inert gas uniform distributor b is connected by pipeline with the inert gas import K3 outside outer tank body, and the pipeline be connected with inert gas import K3 at inert gas uniform distributor b is provided with the 3rd valve V3; When carrying out the canned work of rock gas (especially first canned or when there is more air in interior tank body), in order to ensure safety, in inner storage tank, inert gas is filled with by inert gas import K3 and inert gas uniform distributor b, and by venting gas appliance a, the air in inner storage tank is discharged from relief opening K2, with the requirement making the content in the gas in interior tank body reach safe, prevent air and rock gas mixing from causing danger.
Vacuum heat-insulation interlayer between interior tank body G-1 and outer tank body G-2 has vacuumizing and exhausting mouth K4 by install pipeline, and on pipeline, be disposed with vacuum degree measurement sensor R, the 4th valve V4 and vacuum pump D1; By the degree of vacuum in vacuum degree measurement sensor R Real-Time Monitoring interlayer, when degree of vacuum declines, (between interior tank body G-1 and outer tank body G-2, interlayer can not be completely airtight, its degree of vacuum can slowly decline under normal circumstances), 4th valve V4 opens vacuum pump D1 work simultaneously and vacuumizes, thus ensure the vacuum heat-insulation of interlayer, prevent interior tank body thermal stress from increasing and produce danger.
Liquid circulation lines L1 is provided with in vacuum heat-insulation interlayer between interior tank body G-1 and outer tank body G-2, the circulation import of liquid circulation lines L1 is arranged on the bottom of interior tank body G-1, the loop exit of liquid circulation lines L1 is arranged on the top of interior tank body G-1, and liquid circulation lines L1 sets gradually the 5th valve V5 and recycle pump D2 along circulation import to loop exit; The LNG Liquefied natural gas repeatedly filled in interior tank body can be made fully to mix by ON cycle pump D2 and the 5th valve V5, prevent that vortex phenomenon (in LNG Storage, Transport process, a kind of non-stability phenomenon being known as vortex can occur.Vortex is owing to filling new LNG liquid in the low temperature storing tank that LNG is housed, or makes the liquid generation layering in storage tank due to the nitrogen preferential evaporation in LNG.Each layer liquid after layering, under storage tank perisporium leaks the heating of heat, forms separately independently natural convection circulation.This circulation makes the density of each layer liquid constantly change, and when the density approximately equal of adjacent two layers liquid, strong mixing will occur two liquid layers, thus it is accidents caused to cause LNG Liquefied natural gas overheated in storage tank to evaporate in a large number).
Outer tank body G-2 is provided with safety valve S1.
Above exemplary description is done to the utility model; should be noted that; when not departing from core of the present utility model, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection domain of the present utility model.
Claims (2)
1. LNG transports a storage tank, comprises interior tank body and outer tank body, is provided with airtight vacuum heat-insulation interlayer, it is characterized in that between interior tank body and outer tank body:
Interior tank body has liquid entrance by install pipeline, and on pipeline, arrange the first valve;
The top of interior tank interior is provided with venting gas appliance, venting gas appliance is connected with relief opening for subsequent use with the relief opening outside outer tank body respectively by one-to-two pipeline, and on the main pipeline of one-to-two pipeline, be provided with the first pressure gauge and the second pressure gauge, the subtube of the one-to-two pipeline be connected with relief opening at venting gas appliance is provided with the second valve, the subtube of the one-to-two pipeline be connected with relief opening for subsequent use at venting gas appliance is provided with the second valve for subsequent use;
The bottom of interior tank interior is provided with inert gas uniform distributor, inert gas uniform distributor is connected by pipeline with the inert gas import outside outer tank body, and the pipeline be connected with inert gas import at inert gas uniform distributor is provided with the 3rd valve;
Vacuum heat-insulation interlayer between interior tank body and outer tank body has vacuumizing and exhausting mouth by install pipeline, and on pipeline, be disposed with vacuum degree measurement sensor, the 4th valve and vacuum pump;
Liquid circulation lines is provided with in vacuum heat-insulation interlayer between interior tank body and outer tank body, the circulation import of liquid circulation lines is arranged on the bottom of interior tank body, the loop exit of liquid circulation lines is arranged on the top of interior tank body, and liquid circulation lines sets gradually the 5th valve and recycle pump along circulation import to loop exit.
2. LNG according to claim 1 transports storage tank, it is characterized in that: outer tank body is provided with safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682240.4U CN205026377U (en) | 2015-09-06 | 2015-09-06 | LNG transports storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520682240.4U CN205026377U (en) | 2015-09-06 | 2015-09-06 | LNG transports storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205026377U true CN205026377U (en) | 2016-02-10 |
Family
ID=55258907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520682240.4U Expired - Fee Related CN205026377U (en) | 2015-09-06 | 2015-09-06 | LNG transports storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205026377U (en) |
-
2015
- 2015-09-06 CN CN201520682240.4U patent/CN205026377U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20160906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |