CN206904562U - The fast easily cold storage tanks of LNG - Google Patents
The fast easily cold storage tanks of LNG Download PDFInfo
- Publication number
- CN206904562U CN206904562U CN201720542912.0U CN201720542912U CN206904562U CN 206904562 U CN206904562 U CN 206904562U CN 201720542912 U CN201720542912 U CN 201720542912U CN 206904562 U CN206904562 U CN 206904562U
- Authority
- CN
- China
- Prior art keywords
- inner pressurd
- pressurd vessel
- outer container
- pipeline
- cold storage
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses the fast easily cold storage tanks of LNG,Including outer container,Inner pressurd vessel and the pipeline for being arranged on the outside of outer container and being connected through outer container with inner pressurd vessel,Support system is provided between the outer wall of inner pressurd vessel and the inwall of outer container,The support system includes axially supporting and being respectively arranged on inner pressurd vessel,Two groups of radial supports at lower both ends,The length of the inner pressurd vessel of the distance between two groups of radial supports >=2/3,Wherein axially support includes and inner pressurd vessel bottom,The connected bottom support of outer container and the outer wall with inner pressurd vessel,The inwall group weldering of outer container,The suspender belt being arranged circumferentially,Every group of radial support is provided with 4 radial direction fulcrums,Radial direction fulcrum is arranged in array,Molecular sieve adsorption device is provided with inner pressurd vessel end socket,Inner pressurd vessel bottom is provided with vortex breaker,Shell safe explosion-proof device is provided with the top of outer container,The storage tank safety coefficient is high,Integrated level is high and geometric volume is big,Meet the natural gas storing of service life.
Description
Technical field
The utility model belongs to natural gas storing and supply technology field, the fast easily cold storage tanks of specifically a kind of LNG.
Background technology
LNG (liquefied natural gas) fuel is the optimal fuel of environmental protection as efficient clean energy resource, in recent years state
Family is directed to putting into effect support on policy always and promotes the extensive use of LNG fuel, while reduces coal usage amount, and " coal changes for implementation
Gas " is planned, and advocates and replaces coal with natural gas.And existing storage facilities is difficult to the requirement for meeting " coal changes gas " plan, especially
It is that the relative stability of inner pressurd vessel and outer container is difficult to ensure that, therefore needs that a kind of high-quality, safety coefficient be high, height collects badly
Into, it is easy to operate, take up an area it is smaller, save space and disclosure satisfy that the natural gas storing equipment of service life with a constant volume.
Utility model content
In order to solve the above technical problems, the utility model devises the fast easily cold storage tanks of LNG, the storage tank quality better, height collect
Into being easy to overall skid-mounted and safe and reliable, meet liquefied natural gas reserve requirements.
Technical scheme is used by the utility model：1st, the fast easily cold storage tanks, including outer container, inner pressurd vessel and setting of LNG
The pipeline being connected on the outside of outer container and through outer container with inner pressurd vessel, it is critical that the outer wall of described inner pressurd vessel and outer appearance
Support system is provided between the inwall of device, the support system includes axially supporting and be respectively arranged at inner pressurd vessel upper/lower terminal
The inner pressurd vessel of the distance between two groups of radial supports, two groups of radial supports >=2/3 length, wherein axially support includes and content
The connected bottom support of device bottom, outer container and with the inwall group weldering of the outer wall of inner pressurd vessel, outer container, be arranged circumferentially
Suspender belt.
Further, described outer container internal diameter isWall thickness is 6-10mm, described inner pressurd vessel
Internal diameter beWall thickness is 5-8mm.
Preferably, outer container internal diameter isWall thickness is 8mm, and the internal diameter of described inner pressurd vessel isWall thickness is 6mm.
Preferably, thermal insulating layer is provided between described outer container and inner pressurd vessel, pearlife is filled with thermal insulating layer
And setting is vacuumized, its sealed knot vacuum≤8Pa.
Preferably, molecular sieve adsorption device is provided with described inner pressurd vessel end socket, inner pressurd vessel bottom is provided with vortex breaker,
Shell safe explosion-proof device is provided with the top of outer container.
Preferably, described radial support, the material of bottom support are fiberglass, and every group of radial support is provided with 4
The radial direction fulcrum of array arrangement.
Preferably, the material of described outer container is low alloy steel plate, and the material of described inner pressurd vessel is austenite stainless
Steel plate.
Preferably, the storage tank, which also includes being arranged at, is used for the interlayer pipeline for connecting outer container, inner pressurd vessel in thermal insulating layer, should
Interlayer pipeline is arranged in bending.
Preferably, in the side of outer container, pipeline includes being respectively arranged with pipe valve described pipeline concentrated setting
Water influent pipeline, drain pipe road, gas phase pipeline, liquid level gauge pressure gauge pipeline, overflow passage and pressure piping.
The beneficial effects of the utility model are：Glass reinforced plastic support, axle are radially used between this tank contents device and outer container
To suspender belt and bottom glass steel integral supporting structure is used, ensure Stability Analysis of Structures between tank contents device and outer container, with bottom
For fixing end, top is free end, it is therefore prevented that inner pressurd vessel breaks the phenomenon of support because of shrinkage simultaneously after having filled liquefied natural gas
Prevent that inner pressurd vessel with outer container generation cause to damage by relative rock during skid；The interlayer pipeline of outer container uses bend pipe in connection
Structure, taken into full account surplus of expanding with heat and contract with cold, reduce because of temperature change and caused by stress concentration, pipeline tensile phenomenon, outside
The top of container is provided with a shell safe explosion-proof device, prevents from revealing and outer container because liquefied natural gas occurs in inner pressurd vessel
There is no safety relief device and cause LNG low-temperature storage tanks to explode, it is safe and reliable during use.The anti-whirlpool of inner pressurd vessel bottom design
Device, prevent from producing to be vortexed during liquid discharge liquid in storage tank that the phenomenon of a large amount of vaporizing liquids occurs；Integrated level is high, is easy to overall sled
Dress, and volume is larger, geometric volume 15m3, equivalent to the natural gas of 9000 mark sides, meet the natural gas storing of service life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In accompanying drawing, 1 represents outer container, and 2 represent inner pressurd vessel, and 3 represent thermal insulating layer, and 4 represent molecular sieve adsorption device, 5 generations
Table vortex breaker, 6 represent shell safe explosion-proof device, and 7 represent axially support, and 7-1 represents bottom support, and 7-2 represents suspender belt, 8 generations
Table radial support, 9 represent interlayer pipeline.
Embodiment
Utility model is described further with specific embodiment below in conjunction with the accompanying drawings.
Specific embodiment is as shown in figure 1, the storage tank, including outer container 1, inner pressurd vessel 2 and is arranged at the outside of outer container 1 and wears
The pipeline that outer container 1 is connected with inner pressurd vessel 2 is crossed, the material of outer container 1 is low alloy steel plate, and the internal diameter of outer container 1 isWall thickness is 8mm, and the material of inner pressurd vessel 2 is austenite stainless steel plate, and the internal diameter of inner pressurd vessel 2 is
Wall thickness is 6mm, and geometric volume reaches 15m3, have a safety feature, geometric volume is big, disclosure satisfy that the service life of natural gas；Content
Support system is provided between the outer wall of device 2 and the inwall of outer container 1, the support system includes axially support 7 and set respectively
In two groups of radial supports 8 of the upper/lower terminal of inner pressurd vessel 2, the length of the inner pressurd vessel 2 of the distance between two groups of radial supports 8 >=2/3,
Wherein axially support 7 include the bottoms support 7-1 connected with the bottom of inner pressurd vessel 2, the inside of outer container 1 and with the outer wall of inner pressurd vessel 2,
The inwall group weldering of outer container 1, the suspender belt 7-2 being arranged circumferentially, ensure Stability Analysis of Structures between inner pressurd vessel 2 and outer container 1, the bottom of with
Portion is fixing end, and top is free end, prevents inner pressurd vessel 2 from filling the phenomenon hair for breaking support after liquefied natural gas because of shrinkage
Raw, every group of radial support 8 is provided with 4 radial direction fulcrums, and radial direction fulcrum is arranged in array, and uniform radial direction is produced to inner pressurd vessel 2
Support force, prevent the run-off the straight of inner pressurd vessel 2, can also prevent inner pressurd vessel 2 from producing to rock with respect to outer container 1 to cause to damage during skid
Danger is caused, makes that there is firm position relationship between inner pressurd vessel 2 and outer container 1, safety coefficient is greatly enhanced, storage tank
Quality better, wherein radial support 8, bottom support 7-1 material are fiberglass, can withstand larger strain, further prevent
Support is broken in the only shrinkage of inner pressurd vessel 2.
It is provided with thermal insulating layer 3 between outer container 1 and inner pressurd vessel 2, is set in thermal insulating layer 3 filled with pearlife and vacuumizing
Put, its sealed knot vacuum≤8Pa, ensure that storage tank has good heat-insulating property, molecular sieve suction is provided with the end socket of inner pressurd vessel 2
Adsorption device 4, effectively maintain the vacuum of thermal insulating layer 3；The bottom of inner pressurd vessel 2 is provided with vortex breaker 5, prevents liquid discharge liquid in storage tank
When produce to be vortexed and make the generations of a large amount of vaporizing liquid phenomenons, the top of outer container 1 is provided with shell safe explosion-proof device 6, prevent by
There is On Lng Leakage in inner pressurd vessel 2, and 1 no safety relief device of outer container and cause storage tank to explode.
The storage tank, which also includes being arranged at, is used for the interlayer pipeline 9 for connecting outer container 1, inner pressurd vessel 2, the folder in thermal insulating layer 3
Layer pipeline 9 ensure that surplus of expanding with heat and contract with cold in bending arrangement, reduce because of temperature change and caused by stress concentration, pipeline
The phenomenon broken.
Pipeline concentrated setting is easy to skid, occupation of land position is small, and mouth of pipe height valve is arranged on storage in the side of outer container 1
Tank lower end, be easy to manage and operate, pipeline include being respectively arranged with the water influent pipeline of pipe valve, drain pipe road, gas phase pipeline,
Liquid level gauge pressure gauge pipeline, overflow passage and pressure piping, integrated level are high.
Operating procedure is：
1st, purifying step
Before storage tank work, the purity of gas in pressure vessel should be determined.If the gas purity that container includes is to connect
Receive, then product need to be purified to reduce impurity, using following step：
1) fluid purification product source is connected to the filling on connector of storage tank, in order to prevent atmospheric impurities from returning to storage tank,
The pressure of gas must keep malleation in storage tank during purification process；
2) all valves in addition to liquid level meter valve, turbocharger inlet valve and supercharger outlet are closed；
3) air bleeding valve is opened, closes atmospheric valve；
4) bottom liquid inlet valve is gently opened, liquid is slowly flowed into tank bottom.Flow velocity must be gently so that liquid be the bottom of at
Portion fills to be vaporized in pipeline and pressure piping, therefore is pressurized in inner pressurd vessel, and moment opens top liquid feed valve to flood duct portion
Divide and be then shut off valve；
5) the closing liquid supply source when the instruction of pressure of storage tank table reaches maximum requirement purification pressure, closes turbocharger inlet
Valve；
6) after liquid all releases from storage tank, liquid level meter valve is closed.In order to prevent damaging liquid level meter, it should closing just
Close the front opening balanced valve of liquid level meter valve；
7) joint on liquid level meter both sides is all unscrewed.Liquid level meter valve is opened completely, the moisture feelings in observation synthesis air-flow
Condition.Pipeline is vented about two minutes, if without obvious moisture, closes liquid level meter threshold switch.If moisture be it will be evident that if after
Continuous discharge until in air-flow without moisture；
8) in order to check such as the moisture in the 7th step, supplying valve and vaporizer inlet valve are opened；
9) open atmospheric valve and survey full valve；
10) repetitive decontamination step 2 to 9, until acceptable product purity；
11) liquid level meter is connected again, opens liquid level meter valve, closes balanced valve；
12) after the purification for completing storage tank, find out that all valves should be at closed mode in addition to liquid level meter valve.
2nd, dim storage tank is filled
Storage tank fills or has been that storage tank that is empty and having warmed up is returned to fill for the first time, carries out in the steps below：
1) all valves in addition to liquid level meter valve are closed；
2) title of the Name check supply product-derived on storage tank is compareed, it is necessary to ensure that the product for being sent into storage tank is correct
's；
3) supply source is filled flexible pipe to be connected on storage tank charging joint, and ensures that junction is not leaked；
(storage tank uses nitrogen supercharging before dispatching from the factory, and fills LNG, then nitrogen need to be cemented out from storage tank, with LNG gas
Body is blown down until the satisfied purity of analysis instruction, using the main points proposed in decontamination procedure section above as guide.)
4) open atmospheric valve and survey full valve, let-down vessel pressure to about 0.034MPa, close emptying storage tank valve, but monitor valve
Still open；
5) safety opens top liquid feed valve to fill storage tank as rapidly as possible；
6) pressure on pressure of storage tank table is monitored.If pressure of storage tank rises to 90% model of tank safety valve setting value
Enclose, then close tank top liquid feed valve immediately and stop filling.Open emptying storage tank valve and discharge pressure of storage tank at least to until
Pressure of storage tank is lower more than 0.35MPa than safety valve setting value.Close emptying storage tank valve.Open tank top liquid feed valve and recover to fill
Dress；
7) storage tank liquid-level meter is monitored, when pointer reaches setting, while liquid overflows from full valve is surveyed, and closes supply source
Valve, stop filling.Close monitoring valve；
8) when in the residual liquid vaporization in filling flexible pipe, tank top liquid feed valve is closed；
(in filling process, these parts are cooled to extremely low temperature, in order to avoid injury, bare-handed not contact soft
Pipe or junction.)
9) open and fill the residual liquid discharge valve of junction in storage tank to reduce hose pressure；
10) after pressure is released, take apart and fill flexible pipe, close residual liquid discharge valve.
3rd, cold storage tank is filled
There is the storage tank of fluid product in filling by the following step or fill and be available recently and be still cold storage tank.
It is to close that liquid feed valve, which should be first ensured that,.
1) supply source is filled flexible pipe to be connected on storage tank connector, and ensures that junction is not leaked；
2) supply source liquid carrying valve is opened；
3) tank bottom liquid feed valve is opened completely, starts to fill storage tank.Open tank top liquid feed valve one to enclose, adjust on demand
Two liquid feed valves are saved to keep normally entering tank operating pressure.
Rise pressure is filled by bottom replenishing valve, this is due to be compressed in the gas of gas-phase space；On the contrary, pass through top
Portion's replenishing valve, which fills, to reduce pressure, this be due to headroom gas it is cooled and re-liquefied.
4) when storage tank liquid level meter is designated as full-scale 3/4 (or more earlier), open and survey full valve；
5) storage tank liquid-level meter is monitored, when pointer reaches setting, while liquid surveys full valve spilling from storage tank, closes supply
Source conveying valve stops filling.Close storage tank liquid feed valve and survey full valve；
6) in the residual liquid vaporization in filling flexible pipe, tank top liquid feed valve is closed；
7) open and fill the residual liquid discharge valve of junction in storage tank to reduce hose pressure.Close residual liquid discharge valve.
After pressure is released, dismounting fills flexible pipe.
4th, normal work
During normal operation, pressure of storage tank forces the liquid through drain pipe road, is vaporized through vaporizer inlet valve to outside
Device.In order to compensate because the reduction of pressure of storage tank after liquid discharge, booster pressure regulator valve allow a certain amount of liquid through pressure piping
Vaporization, gas return to tank top, and driving force is provided for the discharge of continuous liquid.Normally prepare to perform tank discharge, should
Open following valve：
Supercharger outlet valve, turbocharger inlet valve, liquid level meter valve, vaporizer inlet valve；
Control valve before pressure gauge and safety valve；
All other valve should close.
5th, discharge opeing operates
Before discharge opeing operation：
Connect safety line；Top filling valve, tapping valve, bottom replenishing valve, atmospheric valve are closed；
Overflow valve, instrument gas valve are in opening during discharge opeing.
Claims (9)
- The fast easily cold storage tanks of 1.LNG, including outer container (1), inner pressurd vessel (2) and be arranged at outer container (1) outside and pass through outer container (1) pipeline being connected with inner pressurd vessel (2), it is characterised in that：The outer wall of described inner pressurd vessel (2) and the inwall of outer container (1) it Between be provided with support system, the support system includes axially support (7) and is respectively arranged at the two of inner pressurd vessel (2) upper/lower terminal The length of the inner pressurd vessel (2) of the distance between group radial support (8), two groups of radial supports (8) >=2/3, wherein axially support (7) bag Include and bottom support (7-1) connected inside inner pressurd vessel (2) bottom, outer container (1) and outer wall, outer container with inner pressurd vessel (2) (1) inwall group weldering, the suspender belt (7-2) being arranged circumferentially.
- 2. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：Described outer container (1) internal diameter isWall thickness is 6-10mm, and the internal diameter of described inner pressurd vessel (2) isWall thickness is 5- 8mm。
- 3. the fast easily cold storage tanks of LNG according to claim 2, it is characterised in that：Described outer container (1) internal diameter isWall thickness is 8mm, and the internal diameter of described inner pressurd vessel (2) isWall thickness is 6mm.
- 4. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：Described outer container (1) and inner pressurd vessel (2) Between be provided with thermal insulating layer (3), filled with pearlife and vacuumize setting in thermal insulating layer (3), its sealed knot vacuum≤ 8Pa。
- 5. the fast easily cold storage tanks of LNG according to claim 4, it is characterised in that：It is provided with described inner pressurd vessel (2) end socket Molecular sieve adsorption device (4), inner pressurd vessel (2) bottom are provided with vortex breaker (5), it is anti-safely that shell are provided with the top of outer container (1) Quick-fried device (6).
- 6. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：Described radial support (8), bottom support The material of (7-1) is fiberglass, and every group of radial support (8) is provided with the radial direction fulcrum of 4 array arrangements.
- 7. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：The material of described outer container (1) is low conjunction Golden steel plate, the material of described inner pressurd vessel (2) is austenite stainless steel plate.
- 8. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：The storage tank also includes being arranged at thermal insulating layer (3) it is used for the interlayer pipeline (9) for connecting outer container (1), inner pressurd vessel (2) in, the interlayer pipeline (9) is arranged in bending.
- 9. the fast easily cold storage tanks of LNG according to claim 1, it is characterised in that：Described pipeline concentrated setting is in outer container (1) side, pipeline include being respectively arranged with the water influent pipeline of pipe valve, drain pipe road, gas phase pipeline, liquid level gauge pressure gauge Pipeline, overflow passage and pressure piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542912.0U CN206904562U (en) | 2017-05-12 | 2017-05-12 | The fast easily cold storage tanks of LNG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542912.0U CN206904562U (en) | 2017-05-12 | 2017-05-12 | The fast easily cold storage tanks of LNG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206904562U true CN206904562U (en) | 2018-01-19 |
Family
ID=61289089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720542912.0U Expired - Fee Related CN206904562U (en) | 2017-05-12 | 2017-05-12 | The fast easily cold storage tanks of LNG |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206904562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188033A (en) * | 2021-04-09 | 2021-07-30 | 新兴能源装备股份有限公司 | LNG low-temperature transportation tank car |
-
2017
- 2017-05-12 CN CN201720542912.0U patent/CN206904562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188033A (en) * | 2021-04-09 | 2021-07-30 | 新兴能源装备股份有限公司 | LNG low-temperature transportation tank car |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207298367U (en) | A kind of skid of unloading with low-temperature centrifugal pump with the LNG for being pressurized gasifier is put | |
| CN203442478U (en) | Medical liquid oxygen storage tank | |
| CN107543027A (en) | A kind of small-sized LNG air supply systems | |
| CN204534105U (en) | A kind of carbon dioxide fills reflux | |
| CN206904562U (en) | The fast easily cold storage tanks of LNG | |
| CN205316815U (en) | High -efficient liquefaction recovery unit of natural gas | |
| CN105485515B (en) | A kind of LNG receiving stations loading system and charging method | |
| CN204852919U (en) | A BOG condensate recovery system for LNG gas station | |
| CN208817083U (en) | The lossless fueling station of cryogenic liquid | |
| CN207814920U (en) | A kind of LNG liquid addition mechanism without immersed pump and precooling | |
| CN2599409Y (en) | Liquefied natural gas evaporation device | |
| CN110360444A (en) | A kind of skid-mounted LNG entrucking and liquid guide system | |
| CN205480191U (en) | Liquefied natural gas circulation turbocharging system | |
| CN207569528U (en) | A kind of LNG buffers pressure charging system | |
| CN204062481U (en) | A kind of pipe control system of natural gas storage tank peculiar to vessel | |
| CN202419134U (en) | Liquefied natural gas supplying system | |
| CN210662312U (en) | LNG low temperature storage tank safety pipeline of releasing | |
| CN212776763U (en) | Liquid nitrogen storage tank nitrogen recovery unit | |
| CN2736294Y (en) | Low temperature liquid container with safety device | |
| CN219140488U (en) | Anti-overcharging structure of low-temperature liquid storage device | |
| CN212747062U (en) | Interlocking control device for preventing cold air from flowing back in water electrolysis oxygen liquefaction system | |
| CN214840075U (en) | Multifunctional low-temperature storage tank | |
| CN219243323U (en) | EAG gasifier integrated on outer wall of LNG storage tank | |
| CN219328000U (en) | Liquid oxygen container convenient to fill | |
| CN216619330U (en) | Pressure control system for low-temperature liquid storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |