CN2565770Y - Hydraulic balancing large floating roof oil tank - Google Patents
Hydraulic balancing large floating roof oil tank Download PDFInfo
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- CN2565770Y CN2565770Y CN 00209877 CN00209877U CN2565770Y CN 2565770 Y CN2565770 Y CN 2565770Y CN 00209877 CN00209877 CN 00209877 CN 00209877 U CN00209877 U CN 00209877U CN 2565770 Y CN2565770 Y CN 2565770Y
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- balance
- wall
- tank
- liquid level
- floating roof
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Abstract
The utility model relates to a hydraulic balancing type large floating roof oil tank. The utility model solves the problem that the use thickness of the steel plate of the large floating roof oil tank is limited. The utility model is composed of a main tank wall, a balance wall, a bottom plate, a floating roof cover and oil tank accessories. The utility model is provided with a liquid level difference controller. The liquid level difference controller is used for controlling the liquid level difference of the liquid level in the main tank wall of the oil tank and the liquid level in the balance wall, and thus the hydraulic balance is maintained. The main tank wall and the balance wall are the double-layer cylindrical structure. The height of the balance wall is 40 percents to 60 percents of the height of the main tank wall. The space is the main tank wall is a main liquid storage region, and the top part of the main tank wall is provided with the floating roof cover and a sealing device. An annular space between the main tank wall and the balance is a secondary liquid storage region which is double as a balance liquid region. The double-layer tank wall structure is used, and the large floating roof tank with same volume can be made of thinner steel plates.
Description
The utility model relates to large-scale oil storage facility, is more particularly to large floating roof oil tank.
Large floating roof oil tank is one of the key equipment in oil reserve storehouse, this oil tank except storage capacity greatly, because floating holding out against pasted oil tank top liquid level, being close to does not have oil-gas space, avoided the air loss of oil product greatly, safety of operation is reliable and environmental pollution is little, thereby is widely adopted in high-capacity oil depot.
Yet large-scale floating roof tank designed at present and that use is the oil tank of individual layer tank skin structure, and the weak point of this structure oil tank is that its capacity is restricted.The maximum capacity floater of present domestic construction is 10 ten thousand steres, and material therefor is the high strength material of yield strength 490MPa, and maximum steel plate thickness is 32.5mm.Oil tank is the main equipment of constructing in the open air, and it almost is impossible carrying out post-weld heat treatment, so the boundary of steel plate post-weld heat treatment thickness has just determined the maximum capacity of oil tank.So the capacity of at present domestic large floating roof oil tank generally is limited in the scope of 10 to 15 ten thousand steres.
It is reported that the maximum ga(u)ge that external high strength material does not carry out post-weld heat treatment is 38～45mm, the maximum capacity of the floater that the use high strength material can be built is about 15～20 ten thousand steres.
The purpose of this utility model is to adopt the principle of hydraulic balance, design a kind of hydraulic balance formula large floating roof oil tank, thereby solve the steel plate used thickness restricted problem in the further maximization process of floater, build more large-scale floater, and can use thin steel plate to build the large floating roof oil tank of equal capacity.
The thickness of oil tank wall is directly proportional with the diameter of suffered fluid column lateral pressure of tank skin and oil tank.In order to solve oil tank maximization process light plate used thickness restricted problem, can adopt the hydraulic balance principle, reduce the suffered fluid column lateral pressure of oil tank wall, thereby reduce tank wall thickness.
During common oil tank full of liquid, tank skin is subjected to the effect of inner fluid column lateral pressure, and the suffered lateral pressure of tank skin is directly proportional with liquid-column height.If apply certain lateral pressure in the tank skin outside, the lateral pressure that is used for the partial offset inboard, then the suffered lateral pressure of tank skin can reduce, and hydraulic balance formula floater adopts this principle to reduce the suffered lateral pressure of tank skin exactly, thereby reaches the purpose that reduces tank wall thickness.
For achieving the above object, the technical solution of the utility model is: this hydraulic balance formula large floating roof oil tank, form by tank skin, base plate, floating top cover and tank accessories.Two-layer cylindrical tank skin, base plate, one or two floating top cover are arranged; Its two-layer cylindrical tank skin, outer field height is lower than the height of internal layer; The tank skin of nexine is called main tank skin, is main liquid storage district in the main tank skin, and outer tank skin is called the less important tank skin balance wall of holding concurrently, and the annular space that forms between balance wall and the main tank skin is the balance liquid zone of holding concurrently, less important liquid storage district; Be provided with the liquid level difference that the liquid level difference controller is used for controlling liquid level in interior liquid level of oil tank master tank skin and the balance wall, to keep the hydraulic balance of oil tank.
This hydraulic balance formula large floating roof oil tank, diameter is more than 50 meters, and the capacity of storaging liquid is more than 5 ten thousand steres; The top in main liquid storage district is provided with a floating top cover and sealing arrangement; When the annular space that forms between balance wall and the main tank skin is held concurrently the balance liquid zone as less important liquid storage district, the top is provided with annular floating top cover and sealing arrangement or annular fixed roof and device for recovering oil and gas, when will be with the equilibrium liquid storage tank during only as the balance liquid zone in the balance wall; All openings that passes double-deck tank skin are taken over, and adopt the metallic hose connection structure, for the very little oil tank of foundation settlement amount, and the structure of fairlead at the bottom of also can adopting jar.
This hydraulic balance formula large floating roof oil tank is owing to adopt technique scheme, have following characteristics: can use the steel plate thinner to build large-scale or super-huge floater, solve the steel plate used thickness restricted problem during floater further maximizes than individual layer tank skin; Can use homemade steel heavy plate for pressure vessels such as 16MnR etc. to build large floating roof oil tank, solve the problem that large oil tank needs inlet plate of building.Reached to reduce and built a jar cost, saved the purpose of foreign exchange; Owing to use thin steel plate to build large oil tank, and thin steel plate has inherent quality and welding quality preferably preferably, helps improving the safety of oil tank.
Narrate embodiment of the present utility model in further detail below in conjunction with accompanying drawing.
Fig. 1 is one of double wall hydraulic balance formula floater structural representation
Fig. 2 is two of a double wall hydraulic balance formula floater structural representation
Fig. 3 is three of a double wall hydraulic balance formula floater structural representation
The utility model hydraulic balance formula large floating roof oil tank has three kinds of forms: double wall hydraulic balance formula floater as shown in Figure 3, be characterized in that the space between main tank skin and the balance wall only is used to store balance liquid, do not play a part to store oil product, structure is simpler, but the capacity degree of utilization is lower; Double wall hydraulic balance formula floater as depicted in figs. 1 and 2 is characterized in that the space between main tank skin and the balance wall is used to store oil product, plays balance liquid simultaneously, capacity degree of utilization height, but structure is than the former complexity.
Specifically describe the structure and the embodiment of double wall hydraulic balance formula floater below in conjunction with Fig. 1, Fig. 2 and Fig. 3.
Embodiment 1:
Consult Fig. 1.This double wall hydraulic balance formula large floating roof oil tank mainly is made up of the cylindrical main tank skin 1 of bilayer and balance wall 2, base plate 3 and floating top 4 and floating top 5; The height of balance wall 2 is 40% to 60% of main tank skin 1 height; 1 interior space of main tank skin is main reserve 6, and the top is provided with cylindrical floating top cover 4 and sealing arrangement 8; Annular space between main tank skin 1 and the balance wall 2 is the balance liquid zone 7 of holding concurrently, less important liquid storage district, and the top is provided with annular floating top cover 5 and sealing arrangement 9; 10 and 12 for passing the oil inlet and the oil outlet pipe of main reserve of double-deck tank skin, adopts the metallic hose connection structure, for the very little oil tank of foundation settlement amount, and the structure of fairlead at the bottom of also can adopting jar; 11 and 13 are less important liquid storage district the hold concurrently oil inlet and the oil outlet pipe of balance liquid zone; 14 is the liquid level display in main liquid storage district, and 15 are the hold concurrently liquid level display of balance liquid zone of less important liquid storage district, and 16 be the liquid level difference controller, is used for controlling the liquid level difference of liquid level and balance wall 2 interior liquid levels in the oil tank master tank skin 1, with the hydraulic balance of maintenance tank skin.
Embodiment 2:
Consult Fig. 2.This double wall hydraulic balance formula large floating roof oil tank is that with Fig. 1 difference airtight fixed roof 17 is adopted at the annular space top between main tank skin 1 and the balance wall 2, and is provided with device for recovering oil and gas 18 that outside jar other is all identical with Fig. 1.
Embodiment 3:
Consult Fig. 3.This double wall hydraulic balance formula large floating roof oil tank is with Fig. 1 difference, and the annular space between main jar 1 and the balance wall 2 is only as balance liquid zone 19, do not play less important liquid storage district, exposed structure is adopted at its top, and is provided with equilibrium liquid storage tank 20 outside jar, and other is all identical with Fig. 1.
In the tank skin calculation of strength of double wall hydraulic balance formula large floating roof oil tank, the calculation of strength of balance wall 2 is identical with common tank skin.The calculation of strength of main tank skin 1 is divided into two parts, identical with common tank skin at hydraulic balance point with top, calculate by synthetic lateral pressure with the lower part at hydraulic balance point, it is as follows that capacity is that 20 ten thousand steres and the tank wall thickness of 25 ten thousand stere double wall hydraulic balance formula floaters under the filling water test situation carry out result calculated: build 20 ten thousand stere floaters with the 16MnR steel plate, the steel plate maximum ga(u)ge is 27mm; Build 25 ten thousand stere floaters, the steel plate maximum ga(u)ge is 30mm, all is lower than the boundary of steel plate post-weld heat treatment thickness.
Adopt double wall hydraulic balance formula floater structure, can the construction capacity reach the oil tank of 30 ten thousand steres, can the construction capacity reach the oil tank of 50 ten thousand steres with the high tensile steel plate of yield strength 490MPa with homemade 16MnR steel plate.
Hydraulic balance formula large floating roof oil tank has been compared tangible economic benefit with common floater, and for example the double wall hydraulic balance formula floater tank body total weight of one 20 ten thousand stere is about 3800 tons, and its medium-carbon steel is 2100 tons, and low-alloy steel is 1700 tons.One the 10 common floater tank body of ten thousand stere total weight is about 1800 tons, and its medium-carbon steel is 1280 tons, and high strength steel is 520 tons.Under same capability, though the double wall hydraulic balance formula floater tank body of one 20 ten thousand stere manys about 200 tons of consumption material than two 10 common floater tank bodies of ten thousand stere, but because the price height of high tensile steel plate, the double wall hydraulic balance formula oil tank of one 20 ten thousand stere lacks 2,500,000 yuan approximately than the total cost of the common oil tank of two 10 ten thousand steres, and, can save 600,000 dollars of foreign exchanges without foreign exchange.
Claims (4)
1, a kind of hydraulic balance formula large floating roof oil tank, by main tank skin (1) and balance wall (2), base plate (3), floating top cover (4), main liquid storage district is advanced, oil outlet pipe (10), (12) and liquid level display (14), less important liquid storage district the advancing of balance liquid zone of holding concurrently, oil outlet pipe (11), (13) and liquid level display (15) form, be provided with the liquid level difference that is used for controlling interior liquid level of oil tank master tank skin (1) and the interior liquid level of balance wall (2), to keep the liquid level difference controller (16) of oil tank hydraulic balance, it is characterized in that: main tank skin (1) and balance wall (2) are double-deck cylindrical tank wall construction; The height of balance wall (2) is 40% to 60% of main tank skin (a 1) height; Space in the main tank skin (1) is main liquid storage district (6), and the top is provided with floating top cover (4) and sealing arrangement (8), and the annular space between main tank skin (1) and the balance wall (2) is the balance liquid zone (7) of holding concurrently, less important liquid storage district, and its top is provided with top cover.
2, hydraulic balance formula large floating roof oil tank as claimed in claim 1, the diameter that it is characterized in that petrol storage tank is more than 50 meters, and capacity is more than 5 ten thousand steres.
3,, it is characterized in that the hold concurrently top cover of balance liquid zone (7) of less important liquid storage district is made up of annular floating top cover (5) and sealing arrangement (9) as claim 1,2 described hydraulic balance formula large floating roof oil tanks.
4,, it is characterized in that the hold concurrently top cover of balance liquid zone (7) of less important liquid storage district is annular fixed roof (17) as claim 1,2 described hydraulic balance formula large floating roof oil tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209877 CN2565770Y (en) | 2000-04-26 | 2000-04-26 | Hydraulic balancing large floating roof oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00209877 CN2565770Y (en) | 2000-04-26 | 2000-04-26 | Hydraulic balancing large floating roof oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2565770Y true CN2565770Y (en) | 2003-08-13 |
Family
ID=33576882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00209877 Expired - Lifetime CN2565770Y (en) | 2000-04-26 | 2000-04-26 | Hydraulic balancing large floating roof oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2565770Y (en) |
-
2000
- 2000-04-26 CN CN 00209877 patent/CN2565770Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20030813 |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Design Institute of China Petrochemical Group Corp. Document name: Notification of Expiration of Patent Right Duration |