CN108253287A - 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
- CN108253287A CN108253287A CN201810037884.6A CN201810037884A CN108253287A CN 108253287 A CN108253287 A CN 108253287A CN 201810037884 A CN201810037884 A CN 201810037884A CN 108253287 A CN108253287 A CN 108253287A
- Authority
- CN
- China
- Prior art keywords
- baffle
- inside cabin
- liquid
- cryogenic liquid
- tank body
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- 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 ancillary equipment technology, the baffle that the structure of the device includes outer wall with bulkhead edge matches in tank body, baffle is horizontal or vertical to be hung in tank body inside cabin, inside cabin is divided into upper and lower or left and right two connecting chambers of different sizes, and the filling liquid inner tube one end set on tank body is placed in big chamber, the other end is docked with filling liquid outer tube.During liquid feeding, cryogenic liquid enters big chamber through filling liquid inner tube, will not be liquefied completely in the gas short time, most of gas, which is compressed, accumulates to small chamber, and after big chamber fills liquid, liquid feeding flow velocity is detected by flowmeter, so as to stop liquid feeding.Portion gas can be liquefied after standing, flow into small chamber later, and final big small chamber level balance, ullage can retain enough gas-phase spaces, can accommodate the swell increment of volume after cryogenic liquid heat absorption, ensure the long-time storage of cryogenic liquid.
Description
Technical field
The invention belongs to low-temperature liquid tanks to fill ancillary equipment technology, reliable when being related to one kind with tank or bottle filling liquid
Prevent from overcharging the anti-overcharge device of the device of function, specifically a kind of cryogenic liquid storage tank or bottle.
Background technology
The cryogenic liquids such as liquefied natural gas, liquid oxygen, liquid nitrogen, liquid argon are a kind of liquid gas, and extremely low temperature is needed to tie up
Hold liquid.Store these cryogenic liquids tank or bottle needs retain enough gas-phase spaces, avoid when the temperature rises, due to
Tank or bottle pressure increase it is too fast and caused by security risk.Storage tank of the present invention can store various cryogenic liquids, but this
Specification is only illustrated by taking liquefied natural gas as an example.
In the prior art, cryogenic liquid overfilling in order to prevent, it is common practice to side is set profusely on tank body, when
When liquid filling is to setting position height, opening side profusely, there is liquid outflow, closes filling apparatus, stops liquid feeding.The method control
Gas-phase space processed is reliable, but for liquefied natural gas (LNG) storage vessel, has very big security risk, because natural gas has
There is inflammable and explosive characteristic, the natural gas profusely discharged from side once accumulates to a certain concentration, the danger for having combustion explosion.In order to
Cryogenic liquid overfilling is prevented, another way is to set flow-limiting valve disconnecting device in internal implementation of port, this device includes cutting
Disconnected valve and filling liquid inner tube have trepanning in filling liquid inner tube.With the rising of liquid level in tank or bottle, stop valve rises, when stop valve reaches
During to setting liquid level, stop valve can stop the trepanning in filling liquid inner tube, fill resistance and increase sharply, and detect fill at this time
Filling mouth pressure increases, and flow reduces, and cuts off liquid-adding device, stops liquid feeding.Though this device, which can be realized, does not discharge the function that limit is filled,
This structure is mechanical device, and assembly precision requirement is high, constructional difficulties, and failure rate is higher, is not suitable with batch production, especially this
After class tank or bottle completion, interior arrangement cannot be replaced.So urgently improve existing structure, design it is novel, reliable, be not required to repair
Anti-overcharge device.
Invention content
The present invention devises a kind of anti-overcharge device of cryogenic liquid storage tank, utilizes the dress to solve above-mentioned problem
Putting reliably prevents from overcharging function when can realize filling liquid.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：A kind of cryogenic liquid storage tank it is anti-overcharge
Device, the present apparatus are fixed in tank body, be aided with the filling liquid outer tube with flowmeter into tank body liquid feeding and form limit and fill structure, close
Key is：The structure of the anti-overcharge device includes outer wall and bulkhead edge matches in tank body baffle and is set to baffle
On current-limiting mechanism, baffle is horizontal or vertical to be hung in tank body inside cabin, inside cabin is divided into upper and lower or left and right two sizes
Different connecting chambers, the filling liquid inner tube one end set on tank body is placed in big chamber, the other end is docked with filling liquid outer tube.
The operation principle of the present invention is：One baffle in tank or bottle inside cabin is set, current-limiting mechanism, filling liquid are set on baffle
The spray port of inner tube is set in big chamber and separate small chamber, when it is the cryogenic liquid of supercooling to fill in opposite tank or bottle,
Cryogenic liquid spray area limits in a certain range, makes liquefied gas minimum, and the baffle of setting flows into small chamber to liquid
It is interior to generate certain resistance, so as to extend the time of liquid level equilibrium in large and small chamber.Because big chamber and the direct phase of charging line
Even, when liquid level first expires in big chamber, there is certain gas-phase space in small chamber.When liquid level is full in big chamber simultaneously, fill
Resistance increases sharply, and detects that filling mouthful pressure increases at this time, and the flow shown in flowmeter reduces, so as to cut off liquid-adding device,
Stop liquid feeding.
The advantageous effect generated using the present invention is：1) it is, simple in structure, it is easy to operate；2), to filling amount slack tank or
Filling in the case of bottle, half tank or bottle etc. are various can play limit and use use as；3) be not in mechanical breakdown, it is reliable and stable；4)
It can realize automatic charging limiting function.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram of the first embodiment of baffle；
Fig. 2 is the structure diagram of second of embodiment of baffle；
Fig. 3 is the structure diagram of the third embodiment of baffle；
Fig. 4 is the large and small chamber liquid level state diagram just filled in tank or bottle after liquid；
Fig. 5 is to stand the tank for filling liquid or the state diagram after large and small chamber liquid level is equal after bottle a period of time；
Fig. 6 is the vertical section side view of tank or bottle in tank or bottle after the first embodiment of setting baffle；
Fig. 7 is the vertical section side view of tank or bottle in tank or bottle after second of embodiment of setting baffle；
Fig. 8 is the vertical section side view of tank or bottle in tank or bottle after the third embodiment of setting baffle；
Fig. 9 is the structure diagram of the 4th kind of embodiment of setting baffle in tank or bottle；
Figure 10 is the cross-sectional plan view of Fig. 9；
Figure 11 is the cross-sectional plan view of tank or bottle in tank or bottle after the 5th kind of embodiment of setting baffle；
Wherein, 1 is flowmeter, and 2 be filling liquid outer tube, and 3 be filling liquid inner tube, and 4 be baffle, and 5 be current-limiting mechanism, and 6 be inside cabin, 7
It is heat insulation layer, 8 be shell.
Specific embodiment
A kind of anti-overcharge device of cryogenic liquid storage tank, the present apparatus are fixed in tank body, are aided with filling with flowmeter 1
Liquid outer tube 2 into tank body liquid feeding and form limit and fill structure, it is important that：The structure of the anti-overcharge device includes outer wall and tank body
The baffle 4 that 6 wall edge of inside cabin matches, baffle 4 is horizontal or vertical to be hung in tank body inside cabin 6, is divided into inside cabin 6 above and below
Or left and right two connecting chambers of different sizes, 3 one end of filling liquid inner tube set on tank body is placed in big chamber, the other end with
Filling liquid outer tube 2 docks.Tank body inside cabin 6 is divided into two chambers communicated of size by the baffle-type overfill-limiting device, in this way, in liquid feeding
When, temperature quickly enters larger chamber by filling liquid inner tube less than the cryogenic liquid of tank or bottle liquid from top or bottom, should
It will not be liquefied completely in the gas short time, most of gas, which is compressed, to be accumulated in small chamber, and liquid is filled in big chamber
Afterwards, liquid feeding speed significantly declines, and the flow velocity of reduction can be detected by flowmeter, so as to stop filling operation.Pass through one
After the heat exchange of section time, portion gas can be liquefied, and liquid can be flowed into small chamber, and liquid level reaches flat in final big small chamber
Weighing apparatus, liquid top can retain enough gas-phase spaces, can accommodate the swell increment of volume after cryogenic liquid heat absorption, ensure Low Temperature Liquid
The long-time storage of body.
The heat insulation layer 7 that shell 8 is further included in the structure of the tank body and is placed between 6 outer wall of outer casing inner wall and inside cabin.
Current-limiting mechanism 5 is provided on the baffle 4, which further increases baffle and flow into small chamber to liquid
The resistance of indoor generation, so as to extend the time of liquid level equilibrium in large and small chamber.Referring to attached drawing 2, Fig. 7, a kind of implementation of baffle
Example structure type be：The baffle 4 hangs in inside cabin 6, inside cabin 6 is divided into left and right two connections of different sizes vertically
Chamber, the baffle 4 are the bow-shaped structural identical with the radian of 6 wall of inside cabin, and the current-limiting mechanism 5 is is set on arch string
Protrusion.
Referring to attached drawing 1, Fig. 6, another example structure form of baffle is：The baffle 4 hangs on inside cabin 6 vertically
In, inside cabin 6 is divided into left and right two connecting chambers of different sizes, which is the bow identical with the radian of 6 wall of inside cabin
Shape structure, the current-limiting mechanism 5 are the groove being set on arch string.
Referring to attached drawing 3, Fig. 8, another example structure form of baffle is：The baffle 4 hangs on inside cabin 6 vertically
In, inside cabin 6 is divided into left and right two connecting chambers of different sizes, which is the bow identical with the radian of 6 wall of inside cabin
Shape structure, the current-limiting mechanism 5 are the through-hole being set on baffle 4.
Referring to attached drawing 9, Figure 10, another example structure form of baffle is：The baffle 4 is horizontally suspended in inside cabin 6
In, inside cabin 6 is divided into upper and lower two connecting chambers of different sizes, which is identical with the cross-sectional shape of inside cabin 6
Special-shaped mechanism, the current-limiting mechanism 5 is the groove being set on baffle 4.
Referring to Figure 11, baffle also has another embodiment mechanism form：The baffle 4 is horizontally suspended in inside cabin 6, by
Cabin 6 is divided into upper and lower two connecting chambers of different sizes, which is the special-shaped machine identical with the cross-sectional shape of inside cabin 6
Structure, the current-limiting mechanism 5 are the notch for being placed in 4 end of baffle.
In the specific implementation, as shown in figure 4, the tank or bottle of the present invention include an inside cabin 6,6 outer surface of inside cabin is wound with
Heat insulation layer 7,7 outside of heat insulation layer are surrounded by shell 8, are evacuated among the two and form insulating space.Inside cabin 6 is divided into large and small by baffle 4
Two chambers, the structure of baffle 4 can be found in Fig. 1, Fig. 2, Fig. 3, Figure 10, Figure 11.Charging line includes being provided with filling for flowmeter 1
Liquid outer tube 2 and filling liquid inner tube 3, the spray port of filling liquid inner tube 3 are placed in big chamber.
During filling liquid, the cryogenic liquid of supercooling flows into inside cabin 6 by flowmeter 1, filling liquid outer tube 2 and filling liquid inner tube 3, because of filling liquid
It is big chamber that inner tube 3, which sprays direction, and fills speed quickly, and only portion gas is liquefied in big chamber, the big indoor gas of chamber
Body, which is compressed, to be accumulated in small chamber.With the rising of liquid level in big chamber, the pressure in small chamber can be gradually increasing, when big chamber
When indoor liquid level peaks, small compartment internal pressure power reaches highest, and filling resistance in charging line increases sharply, and detects at this time
Increase to mouthful pressure is filled, flow reduces, and can cut off liquid-adding device, stops liquid feeding and fills, can be found in attached drawing 4 at this time.
Claims (7)
1. a kind of anti-overcharge device of cryogenic liquid storage tank, the present apparatus are fixed in tank body, it is aided with filling with flowmeter (1)
Liquid outer tube (2) into tank body liquid feeding and form limit and fill structure, it is characterised in that：The structure of the anti-overcharge device include outer wall with
The baffle (4) that tank body inside cabin (6) wall edge matches, baffle (4) is horizontal or vertical to be hung in tank body inside cabin (6), by inside cabin
(6) it is divided into upper and lower or left and right two connecting chambers of different sizes, filling liquid inner tube (3) one end set on tank body is placed in greatly
Chamber is interior, the other end is docked with filling liquid outer tube (2).
2. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The tank body
Structure in the heat insulation layer (7) that further includes shell (8) and be placed between outer casing inner wall and inside cabin (6) outer wall.
3. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The baffle
(4) current-limiting mechanism (5) is provided on, the baffle (4) hangs in inside cabin (6), inside cabin (6) is divided into left and right two vertically
A connecting chamber of different sizes, the baffle (4) are the identical bow-shaped structural of radian with inside cabin (6) wall, the current limliting machine
Structure (5) is the protrusion being set on arch string.
4. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The baffle
(4) it is additionally provided with current-limiting mechanism (5) on, the baffle (4) hangs on vertically in inside cabin (6), it is left and right to be divided into inside cabin (6)
Two connecting chambers of different sizes, the baffle (4) are the identical bow-shaped structural of radian with inside cabin (6) wall, the current limliting
Mechanism (5) is the groove being set on arch string.
5. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The baffle
(4) it is additionally provided with current-limiting mechanism (5) on, the baffle (4) hangs on vertically in inside cabin (6), it is left and right to be divided into inside cabin (6)
Two connecting chambers of different sizes, the baffle (4) are the identical bow-shaped structural of radian with inside cabin (6) wall, the current limliting
Mechanism (5) is the through-hole being set on baffle (4).
6. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The baffle
(4) current-limiting mechanism (5) is additionally provided on, the baffle (4) horizontally suspends in inside cabin (6), is divided into inside cabin (6) above and below
Two connecting chambers of different sizes, which is the special-shaped mechanism identical with the cross-sectional shape of inside cabin (6), described
Current-limiting mechanism (5) is the groove being set on baffle (4).
7. a kind of anti-overcharge device of cryogenic liquid storage tank according to claim 1, it is characterised in that：The baffle
(4) current-limiting mechanism (5) is additionally provided on, the baffle (4) horizontally suspends in inside cabin (6), is divided into inside cabin (6) above and below
Two connecting chambers of different sizes, which is the special-shaped mechanism identical with the cross-sectional shape of inside cabin (6), described
Current-limiting mechanism (5) is the notch for being placed in baffle (4) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037884.6A CN108253287A (en) | 2018-01-16 | 2018-01-16 | A kind of anti-overcharge device of cryogenic liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037884.6A CN108253287A (en) | 2018-01-16 | 2018-01-16 | A kind of anti-overcharge device of cryogenic liquid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108253287A true CN108253287A (en) | 2018-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037884.6A Pending CN108253287A (en) | 2018-01-16 | 2018-01-16 | A kind of anti-overcharge device of cryogenic liquid storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108253287A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204083797U (en) * | 2014-08-08 | 2015-01-07 | 石家庄安瑞科气体机械有限公司 | A kind of anti-overcharge device of cryogenic liquid storage tank |
-
2018
- 2018-01-16 CN CN201810037884.6A patent/CN108253287A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204083797U (en) * | 2014-08-08 | 2015-01-07 | 石家庄安瑞科气体机械有限公司 | A kind of anti-overcharge device of cryogenic liquid storage tank |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |