CN204083797U - A kind of anti-overcharge device of cryogenic liquid storage tank - Google Patents
A kind of anti-overcharge device of cryogenic liquid storage tank Download PDFInfo
- Publication number
- CN204083797U CN204083797U CN201420446226.XU CN201420446226U CN204083797U CN 204083797 U CN204083797 U CN 204083797U CN 201420446226 U CN201420446226 U CN 201420446226U CN 204083797 U CN204083797 U CN 204083797U
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- China
- Prior art keywords
- baffle plate
- interior cabin
- limiting mechanism
- tank body
- topping
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- 239000007788 liquid Substances 0.000 title claims abstract description 52
- 238000003860 storage Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 239000003949 liquefied natural gas Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A kind of anti-overcharge device of cryogenic liquid storage tank, belong to low-temperature liquid tank and fill accessory technical field, the structure of this device comprises the baffle plate that in outer wall and tank body, bulkhead edge matches, baffle plate horizontal or vertical hanging in tank body is divided into upper and lower or left and right two connection chambers varied in size in cabin, by interior cabin, and in the topping up that tank body is arranged, pipe one end is placed in large chamber, the other end docks with topping up outer tube.During liquid feeding, cryogenic liquide pipe in topping up enters large chamber, and can not be liquefied completely in this gas short time, most of gas is accumulated to capacitor by compression, after large chamber filled with fluid, adds flow velocity and is detected by flowmeter, thus stops liquid feeding.After leaving standstill, portion gas can be liquefied, and flows into capacitor afterwards, final large capacitor level balance, and ullage can retain enough gas-phase spaces, can hold the swell increment of the rear volume of cryogenic liquide heat absorption, ensure the long-time storage of cryogenic liquide.
Description
Technical field
The utility model belongs to low-temperature liquid tank and fills accessory technical field, relates to a kind of device preventing from overcharging function when having tank or bottle topping up reliably, the specifically anti-overcharge device of a kind of cryogenic liquid storage tank or bottle.
Background technique
The cryogenic liquides such as LNG Liquefied natural gas, liquid oxygen, liquid nitrogen, liquid argon are a kind of liquid gas, need extremely low temperature to remain liquid.Store the tank of these cryogenic liquides or bottle needs to retain enough gas-phase spaces, avoid when temperature raises, because tank or bottle pressure increase too fast and potential safety hazard that is that cause.Storage tank described in the utility model can store various cryogenic liquide, but this specification is only described for LNG Liquefied natural gas.
In prior art, in order to prevent cryogenic liquide overfilling, common way on tank body, arranges side profusely, and when liquid filling is to desired location height, opening side profusely, has liquid to flow out, and closes filling apparatus, stops liquid feeding.It is reliable that the method controls gas-phase space, but concerning liquefied natural gas (LNG) storage vessel, have very large potential safety hazard, because rock gas has inflammable and explosive characteristic, the rock gas of profusely discharging from side, once accumulate to finite concentration, has the danger of combustion explosion.In order to prevent cryogenic liquide overfilling, another kind of way arranges flow-limiting valve shut-off means at internal filled liquid mouth, and this device comprises pipe in cut-off valve and topping up, in topping up, pipe has perforate.Along with the rising of liquid level in tank or bottle, cut-off valve rises, when cut-off valve reaches setting liquid level, cut-off valve can stop the perforate in topping up on pipe, fills resistance and increases sharply, and now detects that filling mouth pressure increases, flow reduces, and cuts off liquid-adding device, stops liquid feeding.Though this device can realize not discharging the function limit and fill, this structure is mechanical device, and assembly precision requires high, constructional difficulties, and rate of fault is higher, inadaptable batch production, and after especially this type of tank or bottle complete, interior arrangement can not be changed.So urgently improve existing structure, design novel, reliable, maintenance free anti-overcharge device.
Summary of the invention
The utility model, in order to solve an above-mentioned difficult problem, devises a kind of anti-overcharge device of cryogenic liquid storage tank, prevents from reliably overcharging function when utilizing this device can realize topping up.
For solving the problems of the technologies described above, the technological scheme that the utility model is taked is: a kind of anti-overcharge device of cryogenic liquid storage tank, this device is fixed in tank body, the topping up outer tube be aided with flowmeter forms limit to liquid feeding in tank body and fills structure, key is: the structure of this anti-overcharge device comprises the baffle plate that in outer wall and tank body, bulkhead edge matches, and the current-limiting mechanism be arranged on baffle plate, baffle plate is horizontal or vertical to be hung in tank body in cabin, on interior cabin is divided into, lower or left, right two connection chambers varied in size, in the topping up that tank body is arranged, pipe one end is placed in large chamber, the other end docks with topping up outer tube.
Working principle of the present utility model is: in tank or bottle, arrange a baffle plate in cabin, baffle plate arranges current-limiting mechanism, in topping up, the mouth spray of pipe is arranged in large chamber away from capacitor, when fill in relative tank or bottle be cold cryogenic liquide time, cryogenic liquide spray area limitation within the specific limits, make the gas of liquefaction minimum, the baffle plate of setting flows in capacitor liquid and produces certain resistance, thus extends the time of liquid level equilibrium in large and small chamber.Because large chamber is directly connected with charging line, when liquid level in large chamber first expires, in capacitor, also has certain gas-phase space.When liquid level is full in large chamber simultaneously, fills resistance and increase sharply, now detect that filling mouth pressure increases, the flow shown in flowmeter reduces, thus cuts off liquid-adding device, stops liquid feeding.
The beneficial effect adopting the utility model to produce is: 1), structure is simple, easy to operate; 2), all can play limit to filling in the various situations such as filling amount slack tank or bottle, half tank or bottle and use use as; 3) there will not be mechanical failure, reliable and stable; 4) automatic charging limiting function can be realized.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of the first embodiment of baffle plate;
Fig. 2 is the structural representation of the second embodiment of baffle plate;
Fig. 3 is the structural representation of the third embodiment of baffle plate;
Fig. 4 is the large and small chamber liquid level phase diagram in tank or bottle just after filled with fluid;
Fig. 5 be standing filled with fluid tank or after bottle a period of time large and small chamber liquid level equal after phase diagram;
Fig. 6 is after arranging the first embodiment of baffle plate in tank or bottle, the longitudinal section side view of tank or bottle;
Fig. 7 is after arranging the second embodiment of baffle plate in tank or bottle, the longitudinal section side view of tank or bottle;
Fig. 8 is after arranging the third embodiment of baffle plate in tank or bottle, the longitudinal section side view of tank or bottle;
Fig. 9 is the structural representation arranging the 4th kind of embodiment of baffle plate in tank or bottle;
Figure 10 is the cross-sectional plan view of Fig. 9;
Figure 11 is after arranging the 5th kind of embodiment of baffle plate in tank or bottle, the cross-sectional plan view of tank or bottle;
Wherein, 1 is flowmeter, and 2 is topping up outer tubes, and 3 is pipes in topping up, and 4 is baffle plates, and 5 is current-limiting mechanisms, and 6 is interior cabins, and 7 is heat insulation layers, and 8 is shells.
Embodiment
A kind of anti-overcharge device of cryogenic liquid storage tank, this device is fixed in tank body, the topping up outer tube 2 be aided with flowmeter 1 forms limit to liquid feeding in tank body and fills structure, importantly: the structure of this anti-overcharge device comprises the baffle plate 4 that in outer wall and tank body, cabin 6 mural margin matches, baffle plate 4 horizontal or vertical hanging in tank body is divided into upper and lower or left and right two connection chambers varied in size in cabin 6, by interior cabin 6, and in the topping up that tank body is arranged, pipe 3 one end is placed in large chamber, the other end docks with topping up outer tube 2.Cabin in tank body 6 is divided into size two chambers communicated by this baffle-type overfill-limiting device, like this, when liquid feeding, temperature enters larger chamber from top or bottom lower than the cryogenic liquide of tank or bottle liquid fast by pipe in topping up, and can not be liquefied completely in this gas short time, most of gas is accumulated in capacitor by compression, in large chamber after filled with fluid, liquid feeding speed significantly declines, and the flow velocity of reduction can be detected by flowmeter, thus stops filling operation.After the heat exchange of a period of time, portion gas can be liquefied, and liquid can flow in capacitor, in final large capacitor, liquid level reaches balance, enough gas-phase spaces can be retained above liquid, the swell increment of the rear volume of cryogenic liquide heat absorption can be held, ensure the long-time storage of cryogenic liquide.
The heat insulation layer 7 also comprising shell 8 in the structure of described tank body and be placed between outer casing inner wall and interior cabin 6 outer wall.
Described baffle plate 4 is provided with current-limiting mechanism 5, and this current-limiting mechanism 5 increases baffle plate further and liquid is flowed into the resistance produced in capacitor, thus extends the time of liquid level equilibrium in large and small chamber.See accompanying drawing 2, Fig. 7, a kind of example structure form of baffle plate is: described baffle plate 4 vertically hangs in interior cabin 6, by interior cabin 6 and is divided into left and right two connection chambers varied in size, this baffle plate 4 is the bow-shaped structural identical with the radian of interior cabin 6 wall, and described current-limiting mechanism 5 is for being arranged at the projection on arc string.
See accompanying drawing 1, Fig. 6, the another kind of example structure form of baffle plate is: described baffle plate 4 vertically hangs in interior cabin 6, by interior cabin 6 and is divided into left and right two connection chambers varied in size, this baffle plate 4 is the bow-shaped structural identical with the radian of interior cabin 6 wall, and described current-limiting mechanism 5 is for being arranged at the groove on arc string.
See accompanying drawing 3, Fig. 8, the another kind of example structure form of baffle plate is: described baffle plate 4 vertically hangs in interior cabin 6, by interior cabin 6 and is divided into left and right two connection chambers varied in size, this baffle plate 4 is the bow-shaped structural identical with the radian of interior cabin 6 wall, and described current-limiting mechanism 5 is for being arranged at the through hole on baffle plate 4.
See accompanying drawing 9, Figure 10, the another kind of example structure form of baffle plate is: described baffle plate 4 horizontally suspends and be divided into upper and lower two connection chambers varied in size in interior cabin 6, by interior cabin 6, this baffle plate 4 is the special-shaped mechanism identical with the shape of cross section in interior cabin 6, and described current-limiting mechanism 5 is for being arranged at the groove on baffle plate 4.
See Figure 11, baffle plate also has another kind of embodiment's mechanism form: described baffle plate 4 horizontally suspends and be divided into upper and lower two connection chambers varied in size in interior cabin 6, by interior cabin 6, this baffle plate 4 is the special-shaped mechanism identical with the shape of cross section in interior cabin 6, and described current-limiting mechanism 5 is for being placed in the breach of baffle plate 4 end.
In the specific implementation, as shown in Figure 4, tank of the present utility model or bottle comprise an interior cabin 6, and interior cabin 6 outer surface is wound with heat insulation layer 7, is surrounded outside heat insulation layer 7 by shell 8, find time to form insulating space in the middle of both.Interior cabin 6 is divided into large and small two chambers by baffle plate 4, and the structure of baffle plate 4 can see Fig. 1, Fig. 2, Fig. 3, Figure 10, Figure 11.Charging line comprise be provided with flowmeter 1 topping up outer tube 2 and topping up in pipe 3, in topping up, the mouth spray of pipe 3 is placed in large chamber.
During topping up, crossing cold cryogenic liquide and flow into interior cabin 6 by pipe 3 in flowmeter 1, topping up outer tube 2 and topping up, be large chamber, and it is very fast to fill speed because pipe in topping up 3 sprays direction, only have portion gas to be liquefied in large chamber, the gas in large chamber is accumulated in capacitor by compression.Along with the rising of liquid level in large chamber, pressure in capacitor can rise gradually, when in large chamber, liquid level peaks, little separation internal pressure reaches the highest, fills resistance and increase sharply in charging line, now detects that filling mouth pressure increases, flow reduces, can liquid-adding device be cut off, stop liquid feeding filling, now can see accompanying drawing 4.
Liquid feeding is stopped to fill, after leaving standstill a period of time, loculus indoor gas is slowly liquefied, pressure reduces, and in large chamber, cryogenic liquide flows in capacitor, final tank or bottle size cavity indoor pressure and level balance, gas-phase space can be reserved above liquid, specifically see accompanying drawing 5, like this, can effectively ensure that the safety of tank or bottle.
Claims (7)
1. the anti-overcharge device of a cryogenic liquid storage tank, this device is fixed in tank body, the topping up outer tube (2) be aided with flowmeter (1) forms limit to liquid feeding in tank body and fills structure, it is characterized in that: the structure of this anti-overcharge device comprises the baffle plate (4) that cabin (6) mural margin in outer wall and tank body matches, baffle plate (4) is horizontal or vertical to be hung in cabin in tank body (6), on interior cabin (6) are divided into, lower or left, right two connection chambers varied in size, in the topping up that tank body is arranged, pipe (3) one end is placed in large chamber, the other end docks with topping up outer tube (2).
2. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, is characterized in that: also comprise shell (8) in the structure of described tank body and be placed in the heat insulation layer (7) between outer casing inner wall and interior cabin (6) outer wall.
3. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, it is characterized in that: described baffle plate (4) is provided with current-limiting mechanism (5), described baffle plate (4) vertically hangs in interior cabin (6), by interior cabin (6) and is divided into left and right two connection chambers varied in size, this baffle plate (4) is the bow-shaped structural identical with the radian of interior cabin (6) wall, and described current-limiting mechanism (5) is for being arranged at the projection on arc string.
4. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, it is characterized in that: described baffle plate (4) is also provided with current-limiting mechanism (5), described baffle plate (4) vertically hangs in interior cabin (6), by interior cabin (6) and is divided into left and right two connection chambers varied in size, this baffle plate (4) is the bow-shaped structural identical with the radian of interior cabin (6) wall, and described current-limiting mechanism (5) is for being arranged at the groove on arc string.
5. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, it is characterized in that: described baffle plate (4) is also provided with current-limiting mechanism (5), described baffle plate (4) vertically hangs in interior cabin (6), by interior cabin (6) and is divided into left and right two connection chambers varied in size, this baffle plate (4) is the bow-shaped structural identical with the radian of interior cabin (6) wall, and described current-limiting mechanism (5) is for being arranged at the through hole on baffle plate (4).
6. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, it is characterized in that: described baffle plate (4) is also provided with current-limiting mechanism (5), described baffle plate (4) horizontally suspends and be divided into upper and lower two connection chambers varied in size in interior cabin (6), by interior cabin (6), this baffle plate (4) is the special-shaped mechanism identical with the shape of cross section of interior cabin (6), and described current-limiting mechanism (5) is for being arranged at the groove on baffle plate (4).
7. the anti-overcharge device of a kind of cryogenic liquid storage tank according to claim 1, it is characterized in that: described baffle plate (4) is also provided with current-limiting mechanism (5), described baffle plate (4) horizontally suspends and be divided into upper and lower two connection chambers varied in size in interior cabin (6), by interior cabin (6), this baffle plate (4) is the special-shaped mechanism identical with the shape of cross section of interior cabin (6), and described current-limiting mechanism (5) is for being placed in the breach of baffle plate (4) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446226.XU CN204083797U (en) | 2014-08-08 | 2014-08-08 | A kind of anti-overcharge device of cryogenic liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446226.XU CN204083797U (en) | 2014-08-08 | 2014-08-08 | A kind of anti-overcharge device of cryogenic liquid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083797U true CN204083797U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420446226.XU Active CN204083797U (en) | 2014-08-08 | 2014-08-08 | A kind of anti-overcharge device of cryogenic liquid storage tank |
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| CN (1) | CN204083797U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253287A (en) * | 2018-01-16 | 2018-07-06 | 中科睿凌江苏低温设备有限公司 | A kind of anti-overcharge device of cryogenic liquid storage tank |
| CN109058754A (en) * | 2018-09-10 | 2018-12-21 | 芜湖市海格瑞德科技有限责任公司 | A kind of anti-overcharge automobile-used LNG gas cylinder |
-
2014
- 2014-08-08 CN CN201420446226.XU patent/CN204083797U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253287A (en) * | 2018-01-16 | 2018-07-06 | 中科睿凌江苏低温设备有限公司 | A kind of anti-overcharge device of cryogenic liquid storage tank |
| CN109058754A (en) * | 2018-09-10 | 2018-12-21 | 芜湖市海格瑞德科技有限责任公司 | A kind of anti-overcharge automobile-used LNG gas cylinder |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |