CN102343969B - Liquid tank without free liquid level - Google Patents
Liquid tank without free liquid level Download PDFInfo
- Publication number
- CN102343969B CN102343969B CN 201110202985 CN201110202985A CN102343969B CN 102343969 B CN102343969 B CN 102343969B CN 201110202985 CN201110202985 CN 201110202985 CN 201110202985 A CN201110202985 A CN 201110202985A CN 102343969 B CN102343969 B CN 102343969B
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- Prior art keywords
- tank
- liquid
- liquid tank
- hatchcover
- free surface
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Abstract
The invention relates to a liquid tank without a free liquid level, which is characterized by comprising a liquid tank body; the liquid tank body consists of a tank bottom and tank walls which vertically extend upwards on the periphery of the tank bottom; a tank cover is movably mounted at the upper part of the liquid tank body; a sealing ring is arranged between the tank cover and the inner sides of the tank walls; the inner side of the tank cover is provided with a probe of a dielectric constant measuring instrument; and the outer side of the tank cover is connected with a hydraulic oil cylinder. The inner side of the tank cover of the liquid tank without the free liquid level is provided with the probe of the dielectric constant measuring instrument, which is used for measuring the dielectric constant of a substance near the upper surface of liquid in the liquid tank; the dielectric constant is used for judging whether the free liquid level is formed in the liquid tank or not; the position of the tank cover is automatically regulated, thereby eliminating the free liquid level in the liquid tank, so that the liquid tank is always in a full-tank state; the damage to a liquid tankstructure is decreased; safety misadventures such as leakage and the like are prevented from occurring; the risk of the damage to local and overall structures of a ship or other liquid transporting tools is decreased; and the running safety and the stability of the transporting tools are guaranteed.
Description
Technical field
The present invention relates to a kind of container of liquid transportation, especially relate to a kind of no free surface liquid tank, eliminate the generation of rocking load in the liquid tank, guarantee the operation stability of transportation means.
Background technology
The liquid transportation need be carried out in fields such as liquefied natural gas, oil, chemical industry and food, in transportation, liquid can rock and concussion in the liquid tank of the vehicle such as boats and ships, train and automobile, the liquid tank inwall is produced bump, namely rock load, load not only can butt welded seam in this, local weak structure place such as bight produces and destroy, and causes safety misadventure generations such as leakages; And whole transportation means also had tangible application force, transportation means stability is produced the boats and ships of bigger influence, especially transport liquid.Rock load for what the existence that reduces this because free surface as far as possible caused, the best way is exactly the free surface of eliminating liquid tank, makes liquid tank be in " buying securities with all one's capital " state all the time, rocks load thereby eliminate from the source.At present to the research of this respect seldom, mainly be the size of rocking load under the condition that exists of research freedom liquid level, alleviating the coupling of rocking load and wave load, but do not control the generation of rocking load from mechanism and source.
Summary of the invention
The applicant has carried out research and has improved at above-mentioned problem, and a kind of no free surface liquid tank is provided, and eliminates the generation of free surface, fundamentally eliminates the generation of rocking load in the liquid tank, guarantees the safety in operation and stability of transportation means.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of no free surface liquid tank, comprise the liquid tank body, described liquid tank body is made of the bulkhead that the bilge and bilge periphery extend vertically upward, hatchcover is movably arranged on described liquid tank body top, described hatchcover matches with the inboard of described bulkhead, be provided with seal ring between the inboard of described hatchcover and described bulkhead, the inboard of described hatchcover is provided with the probe of specific inductance capacity analyzer, the described hatchcover outside connects hydraulic ram, hydraulic ram connects hydraulic efficiency servo, and hydraulic efficiency servo connects the specific inductance capacity analyzer.
Further:
Rounded, square or other polygon of the cross-sectional plane of described bulkhead.
Described seal ring is the low temperature sealing circle.
Technique effect of the present invention is:
A kind of no free surface liquid tank disclosed by the invention, the probe of specific inductance capacity analyzer is set in the hatchcover inboard, be used for measuring near the specific inductance capacity of the material of liquid upper surface in the liquid tank, judge the position that whether forms free surface in the liquid tank and regulate hatchcover automatically with specific inductance capacity, thereby the free surface in the elimination liquid tank, make liquid tank be in " buying securities with all one's capital " state all the time, avoid in transportation existence owing to free surface in the liquid tank to form and rocked load, reduce the damage to the liquid tank structure, avoid safety misadventure generations such as leakage, and reduce the risk that boats and ships or other liquid transportation means part and overall structure damage, guarantee the safety in operation and stability of transportation means.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the birds-eye view of Fig. 1.
The structural representation that Fig. 3 implements in boats and ships for the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
As Fig. 1, shown in 2, no free surface liquid tank 100 comprises liquid tank body 1, liquid tank body 1 is made of the bulkhead 102 that the bilge 101 and the bilge 101 peripheries extend vertically upward, the cross-sectional plane of bulkhead 102 is rounded, square or other polygon, hatchcover 2 is movably arranged on liquid tank body 1 top, the shape of the shape of hatchcover 2 and bulkhead 102 adapts, the inboard of hatchcover 2 and bulkhead 102 matches to merge and is provided with seal ring 5, the inboard of hatchcover 2 is provided with the probe 3 of specific inductance capacity analyzer, be used for measuring near the specific inductance capacity of the material of liquid upper surface in the liquid tank, judge whether form free surface in the liquid tank with specific inductance capacity.Hatchcover 2 outsides connect hydraulic ram 4, and hydraulic ram 4 can evenly arrange a plurality of, and hydraulic ram 4 connects hydraulic efficiency servo, and hydraulic efficiency servo connects specific inductance capacity analyzer (hydraulic efficiency servo and specific inductance capacity analyzer do not draw in the drawings).
In the specific implementation, the bilge of a plurality of no free surface liquid tanks 100 is fixedly mounted in the ships that transport 200 on (as shown in Figure 3) or other liquid transportation means, one end of hydraulic ram 4 connects hatchcover 2, and the other end connects on the fixed support 6 of ships that transport 200 or other liquid transportation means.
No free surface liquid tank 100 can have three kinds of forms: first kind is the normal temperature pressure type, and extreme design pressure is 2.0Mpa; Second kind is the low temperature adding pressure type, and extreme design pressure is 0.8Mpa; The third is the low-temperature atmosphere-pressure formula, and extreme design pressure is 0.025Mpa.The low temperature liquid tank is relevant with the liquid property of storage, is-163 ℃ as the temperature of the liquefied natural gas in the low-temperature atmosphere-pressure formula liquid tank.Above-mentioned seal ring 5 is relevant with the form of liquid tank, and in the no free surface liquid tank 100 of low temperature adding pressure type and low-temperature atmosphere-pressure formula, seal ring 5 needs to adopt the low temperature sealing circle, as ERIKS ultralow temperature seal ring.
The present invention judges whether to form free surface by the specific inductance capacity of measuring liquid upper surface boundary 1ayer material in the liquid tank.The liquid such as liquefied natural gas, fuel oil and water of conventional concentration have a scope of its specific inductance capacity, if the liquid tank upper liquid forms Free Surface, then the specific inductance capacity of the material of the gap between Free Surface and the hatchcover inner surface must depart from the scope of above-mentioned specific inductance capacity, usually between 1.5～1.8F/m, the specific inductance capacity of air is about 1.0F/m as the specific inductance capacity of liquefied natural gas.Whether depart from above-mentioned scope by monitoring respective liquid specific inductance capacity, can judge whether free surface forms.If specific inductance capacity departs from, the specific inductance capacity analyzer sends a signal to hydraulic efficiency servo, driving hydraulic ram 4 by hydraulic efficiency servo moves down hatchcover 2, hatchcover 2 is moved to liquid surface, thereby eliminate the space between hatchcover 2 and the liquid upper surface, make liquid tank be in " buying securities with all one's capital " state all the time, like this, just eliminated free surface, thereby controlled the generation of rocking load in the liquid tank, avoid in transportation existence owing to free surface in the liquid tank to form and rocked load, reduce the damage to the liquid tank structure, thereby reduce boats and ships (as liquefied natural gas carrier liquid tank and conventional marine fuel oil cabin, water tank etc.) or the risk that other liquid transportation means is local and overall structure is damaged.
Claims (3)
1. no free surface liquid tank, it is characterized in that: comprise the liquid tank body, described liquid tank body is made of the bulkhead that the bilge and bilge periphery extend vertically upward, hatchcover is movably arranged on described liquid tank body top, described hatchcover matches with the inboard of described bulkhead, be provided with seal ring between the inboard of described hatchcover and described bulkhead, the inboard of described hatchcover is provided with the probe of specific inductance capacity analyzer, the described hatchcover outside connects hydraulic ram, hydraulic ram connects hydraulic efficiency servo, and hydraulic efficiency servo connects the specific inductance capacity analyzer.
2. according to the described no free surface liquid tank of claim 1, it is characterized in that: rounded, square or other polygon of the cross-sectional plane of described bulkhead.
3. according to the described no free surface liquid tank of claim 1, it is characterized in that: described seal ring is the low temperature sealing circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110202985 CN102343969B (en) | 2011-07-20 | 2011-07-20 | Liquid tank without free liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110202985 CN102343969B (en) | 2011-07-20 | 2011-07-20 | Liquid tank without free liquid level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102343969A CN102343969A (en) | 2012-02-08 |
| CN102343969B true CN102343969B (en) | 2013-10-09 |
Family
ID=45543117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110202985 Expired - Fee Related CN102343969B (en) | 2011-07-20 | 2011-07-20 | Liquid tank without free liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102343969B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216983A (en) * | 2015-09-29 | 2016-01-06 | 中国海洋大学 | Dive in water, liquid level solidification equipment in buoyancy aid cabin |
| CN106741653B (en) * | 2016-12-29 | 2019-03-19 | 浙江海洋大学 | A kind of oil carrier cargo tank subtracts rolling device |
| CN108132137B (en) * | 2017-12-15 | 2019-07-23 | 浙江海洋大学 | A kind of cam mechanism type ship rocks simulator |
| CN110126986B (en) * | 2019-06-24 | 2024-01-26 | 大连中远海运川崎船舶工程有限公司 | Intelligent control system for liquid tank oscillation and control method thereof |
| CN110254654A (en) * | 2019-06-27 | 2019-09-20 | 广船国际有限公司 | The method of adjustment of ballast water, the ballast tank of ship and ship in ballast tank of ship |
| CN110758650B (en) * | 2019-10-15 | 2021-09-21 | 大连船舶重工集团有限公司 | Method for calculating limit height of high-density liquid goods of liquid cargo ship |
| CN110901828A (en) * | 2019-11-11 | 2020-03-24 | 武汉理工大学 | Free liquid level control device, control method thereof, storage device and ship |
| CN114179965B (en) * | 2021-12-07 | 2022-10-14 | 南通恒翔机电设备有限公司 | Anti-seismic and anti-leakage oil tank for ship |
| CN114659900B (en) * | 2022-04-06 | 2023-05-23 | 中国船舶科学研究中心 | Pressure test device for simulating ten-thousand-meter deep sea submerged floating process and operation method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3149848A (en) * | 1960-11-14 | 1964-09-22 | Douglas Aircraft Co Inc | Hydraulic cap and pressure ring seal |
| CH602504A5 (en) * | 1975-07-22 | 1978-07-31 | Battelle Memorial Institute | |
| SU1125096A1 (en) * | 1983-04-14 | 1984-11-23 | Вологодский Политехнический Институт | Device for measuring metal level in mould of metal continuous caster |
| EP1004858A1 (en) * | 1998-11-27 | 2000-05-31 | Endress + Hauser GmbH + Co. | Filling level gauge |
| SE513461C2 (en) * | 1999-10-21 | 2000-09-18 | Saab Marine Electronics | Device for level measurement in tanks |
| WO2003046491A1 (en) * | 2001-11-26 | 2003-06-05 | Vega Grieshaber Kg | Antenna system for a level measuring device |
| EP1422503B1 (en) * | 2002-11-20 | 2016-04-27 | Rosemount Tank Radar AB | Apparatus and method for radar-based level gauging |
| SE0300819D0 (en) * | 2003-03-21 | 2003-03-21 | Saab Marine Electronics | System and method in a radar level gauging system |
-
2011
- 2011-07-20 CN CN 201110202985 patent/CN102343969B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102343969A (en) | 2012-02-08 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20200720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |