阅读说明：本技术 油船的内浮顶油舱密封装置 (Internal floating roof oil tank sealing device of oil tanker ) 是由 张文彬 高建丰 于 2020-12-16 设计创作，主要内容包括：油船的内浮顶油舱密封装置,包括浮盘、主密封件、伸缩杆、吸盘。伸缩杆的分空心杆顺次相互套接相连,浮盘上浮时,可使下面的分空心杆梯次逐渐进入自身上面一节的分空心杆内。吸盘吸固在储罐球冠顶下端的圆环上。伸缩杆的最上一节分空心杆的上端通过支撑盘支撑在吸盘上并和吸盘固连,伸缩杆的最下一节分空心杆的下端通过连接盘和浮盘固连。伸缩杆伸长到最大位置时,浮盘的底部悬置在储罐罐底的上方；主密封件的内侧和浮盘的外侧始终相贴连在一起；主密封件的外侧和储罐侧罐壁的内侧面相贴连。本发明可以有效防止主密封件和橡胶环的过快磨损,且结构简单,安装制造容易。(The inner floating roof oil tank sealing device for oil tanker includes floating plate, main sealing part, telescopic rod and sucking disc. The hollow separating rods of the telescopic rod are sequentially connected in a sleeved mode, and when the floating plate floats upwards, the hollow separating rods below can gradually enter the hollow separating rods above the hollow separating rods one section of the hollow separating rods. The sucker is fixedly sucked on a circular ring at the lower end of the spherical crown of the storage tank. The upper end of the uppermost section of hollow rod of the telescopic rod is supported on the sucker through a supporting disc and is fixedly connected with the sucker, and the lower end of the lowermost section of hollow rod of the telescopic rod is fixedly connected with the floating disc through a connecting disc. When the telescopic rod extends to the maximum position, the bottom of the floating disc is suspended above the bottom of the storage tank; the inner side of the main sealing element and the outer side of the floating disc are always attached together; the outer side of the main sealing element is attached to the inner side surface of the tank side wall of the storage tank. The invention can effectively prevent the over-quick abrasion of the main sealing element and the rubber ring, and has simple structure and easy installation and manufacture.)

1. An inner floating roof oil tank sealing device of an oil tanker comprises a floating plate (1) and a main sealing element (3) arranged between the floating plate (1) and a side tank wall (2) of a storage tank; the method is characterized in that: the device also comprises a telescopic rod (4) and a sucker (5);

the telescopic rod (4) is formed by sequentially connecting a plurality of sections of hollow rods in a sleeved mode; a structure which prevents the mutual rotation displacement and does not extend or retract any more when extending or retracting to the limit position is arranged between the two hollow rods which are mutually sleeved by the telescopic rod (4); when the floating plate (1) floats upwards, the hollow dividing rod below can gradually enter the hollow dividing rod one section above the floating plate per se in a gradient manner;

the sucker (5) is fixedly sucked on a circular ring (6.1) at the lower end of the spherical crown top (6) of the storage tank;

the upper end of the uppermost section of hollow rod of the telescopic rod (4) is fixedly provided with a supporting disc (4.1), the supporting disc (4.1) is supported on the sucker (5) and fixedly connected with the sucker (5), the lower end of the lowermost section of hollow rod of the telescopic rod (4) is provided with a connecting disc (4.2), and the connecting disc (4.2) is fixedly connected with the floating disc (1); when the telescopic rod (4) extends to the maximum position, the bottom of the floating disc (1) is suspended above the bottom (2.1) of the storage tank;

the inner side of the main sealing element (3) is always attached to the outer side of the floating disc (1); the outer side of the main sealing element (3) is attached to the inner side surface of the tank side wall (2).

2. The internal floating roof tank seal device of a tanker according to claim 1, wherein: the floating disc (1) comprises a floating disc main body (1.1) and a main sealing element connecting part (1.2); the main sealing element connecting part (1.2) is fixedly connected with the floating disc main body (1.1) in a sealing mode, an inner concave ring is arranged on the main sealing element connecting part (1.2), and the inner side of the main sealing element (3) is located in the inner concave ring on the main sealing element connecting part (1.2).

3. The internal floating roof tank seal device of a tanker according to claim 1, wherein: a second sealing element (7); the second sealing element (7) comprises a rubber ring (7.1) and a rubber ring fixing frame (7.2); the lower end of the rubber ring fixing frame (7.2) is fixedly connected with the upper wall (1.1) of the floating disc, and the upper end of the rubber ring fixing frame (7.2) is provided with a rubber ring mounting part; the inner side of the rubber ring (7.1) is positioned in the rubber ring mounting part, and the outer side of the rubber ring (7.1) is attached to the wall (2) of the storage tank.

4. The internal floating roof tank seal device of a tanker according to claim 1, wherein: when the central line of the storage tank is in a vertical position and the floating disc (1) is in a horizontal state, the minimum distance between each point on the floating disc (1) and the inner surface of the bottom (21) of the storage tank is more than or equal to 500 mm.

Technical Field

The invention relates to an oil tank sealing device, in particular to an inner floating roof oil tank sealing device of a wharf oil tanker.

Background

A wharf tanker is a common oil storage device, and an inner floating roof oil tank is often used for oil storage. The use of floating roof tanks for oil storage involves a sealing problem. In fact, with the increasing environmental awareness of the people year by year, higher and higher requirements are put on the VOC emission of the storage tank, and the rapid development of the internal floating roof technology is promoted. The inner floating plate of the oil tank is mature relatively, and when the inner floating plate is applied to an oil tanker, the stability and the safety of the oil tanker can be ensured only by improving the edge seal of the floating plate according to the cabin of the oil tanker. The adopted sealing device not only requires close contact with the cabin wall plate, but also has no influence on the lifting of the floating roof, so that the effect of the sealing device is important to ensure the quality of the stored liquid and prevent the air pollution caused by the evaporation of the stored liquid. Because the oil is loaded in the oil tank of the oil tanker, and the oil tanker is difficult to avoid fluctuation when sailing on the sea, the floating roof can cause the wall plate to be unevenly stressed and deformed or even damaged when transversely moving. The sealing device therefore has to satisfy the following requirements: 1. can freely lift along with the oil level while being tightly contacted with the cabin wall plate; 2. the sealing means can generate a corresponding reaction force which counteracts when the floating platform is displaced laterally and can vary to some extent with the shape of the spacing between the floating platform and the bulkhead plate.

Patent documents entitled "a sealing device for the periphery of an inner floating tray" entitled "sealing device for the periphery of an inner floating tray" and application No. 201921420126.9, No. CN211077107U, disclose an inner floating tray and a sealing device for the periphery thereof: "comprises: first seal structure, the second seal structure, the atress roof beam and increase the high beam, wherein, the bottom and the interior floating plate of atress roof beam are fixed, the upper end of atress roof beam supports and fixes and increases the high beam, first seal structure and second seal structure are plate structure and are located the outside of atress roof beam and increase the high beam, the side of first seal structure and second seal structure is fixed in the upper end of increasing the high beam, and first seal structure is located under the second seal structure, the side of first seal structure and second seal structure is increased the roof beam and is fixed the back, first seal structure first downwarping then downwardly extending and elasticity compress tightly the contact to the oil tank inner wall, second seal structure downwardly extending and elasticity compress tightly the contact to the oil tank inner wall. The patent provides a sealing means for the periphery of the inner floating disc which attempts to achieve a good sealing effect to avoid oil and gas leakage or volatilization well. Patent documents entitled "a storage tank full compensation bag type high elastic sealing device" with application No. 201920398103.6 and No. CN209871293U disclose a storage tank full compensation bag type high elastic sealing device: "sealing device sets up including in floating the top storage tank and the outer storage tank that floats to be arranged in sealing up, float the top storage tank inner floating plate and the space between the storage tank jar wall outward, sealing device connects in outer collar tie-piece top, outer collar tie-piece is connected at the floating plate side, sealing device includes high elasticity seal assembly, space compression subassembly, layering and bolt fastener, the space compression subassembly includes bag formula filler, bag formula sticky tape and from moulding the elastic plate. "it tries to seal on a large scale through high elasticity seal assembly, makes floating plate and jar wall static switch on, utilizes the memory function of its material itself, carries out elastic compression and self-healing, realizes the full compensation of floating plate in the oil storage tank and seals to reach the effect of gas-liquid isolation, effectual protection has simultaneously reduced the wearing and tearing of seal membrane, to a great extent has prolonged sealing device's life. However, the floating discs of the two patents have the problem of complex structure, and the problem of connection relation between the floating disc and the tank top is not involved, so that the floating disc can not only cause the corresponding sealing element to encounter the friction problem caused by linear friction and extrusion deformation of up-and-down sliding due to the problems of up-and-down movement and swinging, but also is difficult to avoid the friction problem caused by the rotation movement of the returning disc, thereby reducing the service life of the corresponding sealing element.

Disclosure of Invention

The invention mainly aims to provide an inner floating roof oil tank sealing device of a wharf oil tanker, which can freely lift along with the oil level while the cabin wall plates are in close contact with each other, and a floating disc only swings but does not rotate when a ship shakes forwards, backwards, leftwards and rightwards.

The technical scheme adopted by the invention is as follows: the utility model provides an interior floating roof oil tank sealing device of oil tanker, includes the floating plate, locates main sealing element, telescopic link, the sucking disc between floating plate and the storage tank side tank wall.

The telescopic rod is formed by sequentially connecting a plurality of sections of hollow rods in a sleeved mode. A structure which prevents the mutual rotation displacement and does not extend or retract any more when extending or retracting to the limit position is arranged between two hollow rods which are mutually sleeved by the telescopic rod; when the floating disc floats upwards, the hollow dividing rod below can gradually enter the hollow dividing rod one section above the floating disc in a gradient manner;

the sucker is fixedly sucked on a circular ring at the lower end of the spherical crown top of the storage tank;

the upper end of the uppermost section of hollow rod of the telescopic rod is fixedly provided with a supporting disc, the supporting disc is supported on the sucking disc and fixedly connected with the sucking disc, the lower end of the lowermost section of hollow rod of the telescopic rod is provided with a connecting disc, and the connecting disc is fixedly connected with the floating disc; when the telescopic rod extends to the maximum position, the bottom of the floating disc is suspended above the bottom of the storage tank;

the inner side of the main sealing element and the outer side of the floating disc are always attached together; the outer side of the main sealing element is attached to the inner side surface of the tank side wall of the storage tank.

Here, the floating plate is a novel aluminum alloy welded self-floating inner floating plate, and the details of the main structure are well known technology and will not be described herein. The telescopic rod is also made of a novel aluminum alloy, and the extension and retraction of the telescopic rod and the corresponding limit fixing structure are also known in the art and are not the protection points sought by the present application, and therefore, the details are not described herein. The main seal is a tubular flushing seal member, which is also known in the art and will not be described herein. Because the sucking disc is sucked and fixed on the ring at the lower end of the storage tank spherical crown top, the sucking disc can not slide and move relative to the storage tank spherical crown top because of rotation. The main deformation of sucking disc derives from the extrusion deformation that the left and right, preceding, rear direction of supporting disk was brought swayd, like this with the floating plate that the hollow pole lower extreme of the next branch linked together can only appear corresponding left and right, preceding, rear direction sway and warp, and can not appear rotating the phenomenon [ even appear, also minimum rotation phenomenon ], consequently, just can reduce the wearing and tearing that bring because of sliding friction of main seal spare greatly to prolong the maintenance time interval of the interior floating roof oil tank sealing device of oil ship greatly, be favorable to reduction in production cost.

Preferably, the float comprises a float body, a main seal connection; the main sealing element connecting part is fixedly connected with the floating disc main body in a sealing mode, an inner concave ring is arranged on the main sealing element connecting part, and the inner side of the main sealing element is located in the inner concave ring on the main sealing element connecting part. This preferred scheme, simple structure, manufacturing is easy.

Preferably, a second seal is also included. The second sealing element comprises a rubber ring and a rubber ring fixing frame; the lower end of the rubber ring fixing frame is fixedly connected with the upper wall of the floating disc, and the upper end of the rubber ring fixing frame is provided with a rubber ring mounting part; the inboard of rubber ring is located the rubber ring installation department, and the outside and the storage tank jar wall of rubber ring are pasted and are linked together. This preferred scheme, simple structure, reliable operation can effectively improve whole sealed effect.

Preferably, when the central line of the tank is in a vertical position and the floating plate is in a horizontal state, the minimum distance between each point on the floating plate and the inner surface of the bottom of the tank is more than or equal to 500 mm. The preferred scheme can prevent the floating plate from touching the inner surface of the bottom of the storage tank.

In conclusion, the invention can effectively prevent the main sealing element and the rubber ring from being worn too fast, and has simple structure and easy installation and manufacture.

Drawings

FIG. 1: the invention has a structure schematic diagram;

in the figure: the floating plate comprises a floating plate 1, a floating plate main body 1.1, a main sealing element connecting part 1.2, a storage tank side tank wall 2, a storage tank bottom 2.1, a main sealing element 3, an expansion rod 4, a supporting disk 4.1, a connecting disk 4.2, a sucking disk 5, a storage tank spherical crown top 6, a circular ring 6.1, a second sealing element 7, a rubber ring 7.1 and a rubber ring fixing frame 7.2.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

As shown in figure 1, the invention comprises a floating disc 1, a main sealing element 3, a telescopic rod 4, a suction cup 5 and a second sealing element 7. The main seal 3 is provided between the floating disc 1 and the tank-side tank wall 2. The sucker 5 is fixedly sucked on a circular ring 6.1 at the lower end of the spherical crown top 6 of the storage tank. The details of the structure of the spherical crown 6 of the storage tank are simple and will not be described herein. When the central line of the storage tank is in a vertical position and the floating disc 1 is in a horizontal state, the minimum distance between each point on the floating disc 1 and the inner surface of the bottom 2.1 of the storage tank is more than or equal to 500 millimeters.

The telescopic rod 4 is formed by sequentially connecting a plurality of sections of hollow rods in a sleeved mode. A structure which prevents the mutual rotation displacement and does not extend or retract any more when extending or retracting to the limit position is arranged between the two hollow rods which are mutually sleeved by the telescopic rod 4. That is, when the floating plate 1 floats upwards, the hollow dividing rod below can gradually enter the hollow dividing rod one section above the floating plate 1. For example, the structure for preventing the rotation displacement and extending or retracting to the extreme position without extending or retracting can be realized by forming a vertically-oriented long groove on each section of the hollow rod except the lowest section of the small hollow rod, and fixedly inserting the upper end of each section of the small hollow rod except the uppermost section of the small hollow rod into a positioning convex column in the corresponding long groove. In addition, the upper end of the uppermost section of hollow rod of the telescopic rod 4 is fixedly provided with a supporting disc 4.1, the supporting disc 4.1 is supported on the sucker 5 and is fixedly connected with the sucker 5, the lower end of the lowermost section of hollow rod of the telescopic rod 4 is provided with a connecting disc 4.2, and the connecting disc 4.2 is fixedly connected with the floating disc 1. When the telescopic rod 4 extends to the maximum position, the bottom of the floating disc 1 is suspended above the bottom 2.1 of the storage tank. Here, the fixed connection between the upper end of the support plate 4.1 and the uppermost hollow rod, the fixed connection between the lower end of the lowermost hollow rod of the telescopic rod 4 and the connecting disc 4.2, and the fixed connection between the connecting disc 4.2 and the floating disc are all detachable and fixed, and the specific structural details are not described herein because all are simple technologies. Preferably, the float 1 includes a float body 1.1 and a main seal connecting portion 1.2. The specific structure details of the floating body 1.1 refer to the existing well-known floating structure, and are not described herein again because they are well-known in the art. The main sealing element connecting part 1.2 is fixedly connected with the floating disc main body 1.1 in a sealing mode, an inner concave ring is arranged on the main sealing element connecting part 1.2, the inner side of the main sealing element 3 is located in the inner concave ring on the main sealing element connecting part 1.2, and therefore the inner side of the main sealing element 3 and the outer side of the floating disc 1 are attached together all the time. The outer side of the main seal 3 is attached to the inner side of the tank side wall 2.

The second seal 7 comprises a rubber ring 7.1 and a rubber ring fixing frame 7.2. The lower end of the rubber ring fixing frame 7.2 is fixedly connected with the upper wall 1.1 of the floating disc, and the upper end of the rubber ring fixing frame 7.2 is provided with a rubber ring mounting part; the inside of rubber ring 7.1 is located the rubber ring installation department, and the outside and the storage tank jar wall 2 of rubber ring 7.1 are pasted mutually.

The above embodiments are merely preferred embodiments of the present invention, and not intended to limit the structure and scope of the invention. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes in the shapes, structures and design objectives of the present invention are intended to be covered by the present invention, and all such equivalent changes are intended to be protected by the present invention.