CN212557655U - Floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space - Google Patents
Floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space Download PDFInfo
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- CN212557655U CN212557655U CN202020612459.8U CN202020612459U CN212557655U CN 212557655 U CN212557655 U CN 212557655U CN 202020612459 U CN202020612459 U CN 202020612459U CN 212557655 U CN212557655 U CN 212557655U
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Abstract
The utility model relates to a floating roof storage tank sealing technical field, concretely relates to floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space. The device comprises an integral rubber sealing diaphragm, one end of the rubber sealing diaphragm is fixedly arranged on the upper portion of a floating boat edge plate and extends towards the inner side tank wall of a storage tank, the rubber sealing diaphragm extends downwards to the lower side of the liquid level of storage medium of the storage tank along the inner side tank wall of the storage tank, the lower end of the rubber sealing diaphragm extends to the outer side face of the floating boat edge plate from the inner side tank wall of the storage tank and extends upwards along the outer side face of the floating boat edge plate, and the rubber sealing diaphragm is fixedly connected with the first end of the rubber sealing diaphragm, so that an oil-gas-free closed space is enclosed. The utility model provides a pair of floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space has eliminated the large area oil gas space of sealed lower part, has improved sealed effect, and can adapt to the annular gap that leads to such as floating plate drift, storage tank deformation and change by a wide margin, has eliminated the safe risk of storage tank operation.
Description
Technical Field
The utility model relates to a floating roof storage tank sealing technical field, concretely relates to floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space.
Background
In recent years, the storage of petroleum energy increasingly shows the important status in the social construction of China, and a large number of national petroleum storage bases are newly constructed in China in recent years, so that a large number of petroleum storage tanks are built. With the improvement of the social requirements on safety and environmental protection, effective sealing measures are required to be taken in the space communicated with the outside in the oil storage area of the oil storage tank. The annular gap between the edge of the floating plate of the floating roof storage tank and the tank wall is the key point of oil gas volatilization and loss, and the sealing device at the position has good sealing performance so as to reduce oil loss and reduce safety and environmental problems caused by oil gas leakage. The storage tank is influenced by various factors after being built and put into operation, such as construction factors, foundation settlement, stress action and the like, the storage tank is possibly deformed by the factors, the annular clearance is greatly deviated and exceeds the normal use range of various seals, and the phenomenon commonly existing in the domestic storage tank at present is also caused.
At present, the sealing forms of annular gaps of domestic floating roof storage tanks mainly comprise bag type sponge elastic sealing, tubular liquid filling sealing and tongue type sealing, the sealing has better sealing effect, but due to the limitation of various factors, the capacity of adapting to the change of annular space is insufficient, and the sealing can be separated from the tank wall under the condition that the storage tank is seriously deformed, so that the sealing is failed, and the use value of the sealing is lost; secondly, the seals themselves have more or less oil and gas spaces, which brings certain risks to the safe operation of the storage tank.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a floating roof storage tank does not have high-efficient full compensation elastic sealing device in oil gas space.
The utility model adopts the following technical scheme: an efficient full-compensation elastic sealing device for a floating roof storage tank without an oil-gas space is arranged between the inner side wall of the storage tank and the outer side surface of a floating ship edge plate and comprises an integral rubber sealing diaphragm, one end, namely the first end, of the rubber sealing diaphragm is fixedly arranged at the upper part of the edge plate of the floating vessel by a sealing unit, the rubber sealing diaphragm extends from the first end to the inner side tank wall of the storage tank, the rubber sealing diaphragm extends downwards along the inner side tank wall of the storage tank to the lower side of the liquid level of the storage medium in the storage tank, the lower end of the rubber sealing diaphragm is upwards led out from the inner side wall of the storage tank to cover the liquid level of the storage medium in the storage tank and is attached to the liquid level of the storage medium in the storage tank to extend to the outer side face of the edge plate of the floating pontoon, and the lower end of the rubber sealing diaphragm, which is positioned at the outer side face of the edge plate of the floating pontoon, upwards extends along the outer side face of the edge plate of the floating pontoon to form the other end of the rubber sealing diaphragm, namely a second end; the second end and the first end of the rubber sealing diaphragm are fixedly connected with each other through a sealing unit, so that the rubber sealing diaphragm encloses an oil-free airtight space;
the upper end of the rubber sealing diaphragm along the radial direction of the storage tank is in a bent shape, and a fold section which is convenient to extend along the radial direction of the storage tank is arranged at the liquid level of the storage medium attached to the rubber sealing diaphragm.
Preferably, the sealing device is further provided with an elastic sealing plate for clamping the rubber sealing diaphragm therein, the elastic sealing plate comprises an inner elastic plate and an outer elastic plate which are overlapped with each other, and the inner elastic plate and the outer elastic plate are arranged along the circumferential direction of the wall of the storage tank; the elastic sealing plate and the rubber sealing diaphragm are matched with each other to form an elastic body;
the first ends of the inner elastic plate and the outer elastic plate along the plate length direction are fixedly connected with the first end of the rubber sealing diaphragm and are fixedly arranged at the upper part of the edge plate of the floating pontoon by a sealing unit; the inner elastic plate and the outer elastic plate clamp the rubber sealing diaphragm, and the second ends of the inner elastic plate and the outer elastic plate in the plate length direction extend from the first end of the rubber sealing diaphragm to the inner side tank wall of the storage tank in a bending mode and extend downwards to the lower side of the liquid level of storage medium of the storage tank along the inner side tank wall of the storage tank.
Preferably, the sealing unit comprises an edge support member fixed to the edge plate of the vessel, a rubber gasket, and a first fastener comprising an edge plate bolt and a nut; the edge plate bolt is matched with the nut to fasten the edge support part, the second end of the rubber sealing diaphragm, the rubber gasket, the inner elastic plate, the first end of the rubber sealing diaphragm and the outer elastic plate on the edge support part;
preferably, the sealing device further comprises a support plate arranged between the rubber gasket and the edge support member, one side of the support plate is fastened at the edge plate of the floating pontoon by the sealing unit, the other side of the support plate extends obliquely upwards towards the tank wall of the storage tank and is used for supporting the inner elastic plate, and the extending end of the support plate is bent downwards to form an arc-shaped bend angle which is used for being attached to the downward-bent cambered surface of the inner elastic plate.
Preferably, the sealing device further comprises a pressing plate, the sealing unit further comprises a U-shaped pressing plate, an opening of the U-shaped pressing plate is pressed downwards against the outer elastic plate, and the pressing plate is pressed on the top of the outer elastic plate; the edge plate bolt sequentially penetrates through the edge support part, the second end of the rubber sealing diaphragm, the support plate, the rubber gasket, the inner elastic plate, the first end of the rubber sealing diaphragm, the outer elastic plate, the U-shaped pressing plate and the pressing plate, and is matched with the nut to fasten the inner elastic plate, the rubber sealing diaphragm, the outer elastic plate and the sealing unit together;
one side of the pressure plate is fastened on the edge plate of the floating pontoon by a sealing unit, the other side horizontally extends towards the direction of the tank wall of the storage tank and is used for limiting the bending high point of the outer spring plate, and the extension distance of the extension end of the pressure plate exceeds the extension distance of the extension end of the supporting plate.
Preferably, the part of the rubber sealing diaphragm, which is positioned on the outer side surface of the edge plate of the floating vessel, is tightly pressed and attached on the outer side surface of the edge plate of the floating vessel by a support assembly and a batten, and the support assembly and the batten are respectively fastened on the edge plate of the floating vessel by a second fastener.
Preferably, the batten comprises strip-shaped parts which are arranged on the upper part of the edge plate of the floating pontoon at intervals along the circumferential direction of the edge plate of the floating pontoon; the support assembly comprises a ring piece and an extension piece, the ring piece surrounds the lower end of the edge plate of the floating pontoon to form a circular ring which is tightly attached to the edge plate of the floating pontoon, one end of the extension piece is fixedly connected to the ring piece, and the other end of the extension piece extends to the middle of the interval of the pressing strips towards the upper part of the edge plate of the floating pontoon and is vertical to and staggered with the pressing strips.
Preferably, the second fastening member includes a bolt, a gasket, and an outer nut, the bolt being inserted through the support assembly or the bead, the rubber sealing diaphragm, the pontoon edge plate, and the edge support member in this order from the side near the tank wall, and having an end fastened by the gasket and the outer nut.
Preferably, the rubber sealing diaphragm comprises nitrile rubber and fluororubber; the elastic sealing plate is made of S30110 high-elasticity stainless steel plate.
The beneficial effects of the utility model reside in that:
1. the utility model provides a floating roof storage tank does not have the high-efficient full compensation elastic seal in oil gas space and is the sealing device of brand-new structural style, and the sealed airtight space that does not have of the sealed diaphragm formation of elastic seal board and rubber has eliminated the large area oil gas space of the sealed lower part of conventional, has improved sealed effect greatly, and can adapt to the annular gap that leads to such as floating plate drifts, storage tank deformation and change by a wide margin, has eliminated the safe risk of storage tank operation.
2. The height of the sealing surface of the device is more than 2 times of the height of the existing common sealing surface, the sealing effect is greatly improved, the sealing can adapt to larger annular space based on the high elasticity of the elastic sealing plate, and the device can be normally used within the range of-100 mm to +250mm of the standard annular space.
3. The inner elastic plate and the outer elastic plate of the elastic sealing plate cover and clamp the rubber sealing diaphragm, so that the direct contact between the rubber sealing diaphragm and the wall of the storage tank is avoided, the abrasion, the aging and the breakage of the rubber sealing diaphragm caused by the friction with the wall of the tank are effectively reduced in the change process of the annular clearance of the storage tank, and the sealing safety is effectively improved while the service time of the rubber sealing diaphragm is prolonged.
4. The rubber sealing diaphragm can be made of nitrile rubber or fluororubber, the nitrile rubber is made of NBR/PVC rubber-plastic blending material, and the nitrile rubber has excellent oil resistance, aging resistance, abrasion resistance, low gas permeability and good low-temperature use performance, has excellent resistance to nonpolar and low-polarity oils and solvents, and is suitable for crude oil, gasoline, diesel oil and other oils; the fluorine rubber adopts FKM sizing material, has extremely excellent corrosion resistance, high temperature resistance, wear resistance, weather aging resistance, excellent gas permeation resistance and good low-temperature use performance, has excellent resistance to aromatic hydrocarbon, high aromatic hydrocarbon oil, various crude oil and fuel oil, solvent oil, hydraulic oil and lubricating oil, halogenated hydrocarbon, concentrated acid and the like, and is suitable for crude oil, gasoline, diesel oil and other oil products and toluene, xylene and other chemical solvents.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion I of FIG. 1;
FIG. 3 is an enlarged view of section II of FIG. 1;
FIG. 4 is a schematic view of FIG. 1 taken along line A;
FIG. 5 is a schematic view of the sealing effect of the present invention under different annular gaps;
fig. 6 is a comparison of the sealing effect of the present invention with the sealing effect of the common annular gap.
The notations in the figures have the following meanings:
70-rubber sealing diaphragm 20-elastic sealing plate 21-inner elastic plate 22-outer elastic plate
31-edge support member 32-rubber gasket 33-U-shaped pressure plate 34-first fastener
341-edge plate bolt 342-nut 343-flat washer nut 41-brace plate
42-platen 51-support assembly 511-ring member 512-extension member 52-compression bar
53-second fastener 531-bolt 532-washer 533-external nut
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the terms "upper" and "lower" used below refer to directions in the drawings.
As shown in figures 1, 2, 3 and 4, the high-efficiency full-compensation elastic sealing device for the floating roof tank without the oil-gas space, the device is arranged between the inner tank wall of the storage tank and the outer side surface of the floating vessel edge plate 10, and comprises an integral rubber sealing diaphragm 70, one end, namely a first end, of the rubber sealing diaphragm 70 is fixedly arranged at the upper part of the floating vessel edge plate 10 through a sealing unit, the rubber sealing diaphragm 70 extends towards the inner tank wall of the storage tank from the first end, the rubber sealing diaphragm 70 extends downwards along the inner tank wall of the storage tank to the lower side of the liquid level of the storage medium in the storage tank, the lower end of the rubber sealing diaphragm 70 is upwards led out from the inner tank wall of the storage tank to cover the liquid level of the storage medium of the storage tank and is attached to the liquid level of the storage medium of the storage tank to extend to the outer side face of the floating vessel edge plate 10, the lower end of the rubber sealing diaphragm 70, which is positioned at the outer side face of the floating vessel edge plate 10, upwards extends along the outer side face of the floating vessel edge plate 10 and forms the other end, namely a second end, of the rubber sealing diaphragm 70; the second end and the first end of the rubber sealing diaphragm 70 are fixedly connected to each other by a sealing unit, so that the rubber sealing diaphragm 70 encloses an oil-free airtight space;
the upper end of the rubber sealing diaphragm 70 along the radial direction of the storage tank is curved, and a wrinkle section which is convenient to extend along the radial direction of the storage tank is arranged at the liquid level of the rubber sealing diaphragm 70 which is attached to the storage medium of the storage tank.
The sealing device is also provided with an elastic sealing plate 20 for clamping the rubber sealing diaphragm 70, the elastic sealing plate 20 comprises an inner elastic plate 21 and an outer elastic plate 22 which are overlapped with each other, and the inner elastic plate 21 and the outer elastic plate 22 are arranged along the circumferential direction of the wall of the storage tank; the elastic sealing plate 20 and the rubber sealing diaphragm 70 are matched with each other to form an elastic body;
the first ends of the inner elastic plate 21 and the outer elastic plate 22 in the plate length direction are fixedly connected with the first end of the rubber sealing diaphragm 70 and are fixedly arranged at the upper part of the pontoon edge plate 10 by a sealing unit; the inner spring plate 21 and the outer spring plate 22 clamp the rubber sealing diaphragm 70, and the second ends of the inner spring plate 21 and the outer spring plate 22 in the plate length direction extend from the first end of the rubber sealing diaphragm 70 to the inner tank wall of the storage tank in a bending way and jointly extend downwards along the inner tank wall of the storage tank to the lower side of the liquid level of the storage medium in the storage tank. The bottom welding of outer diving board 22 has spacing hook to be used for catching on the bottom of interior diving board 21, and outer diving board 22 and the terminal one section of interior diving board 21 are towards keeping away from the tank wall lateral bending, form an included angle of about 30 with the tank wall, and the spacing hook of being convenient for catches on stretching out of interior diving board and rubber seal diaphragm 70. Wherein, the rubber sealing diaphragm 70 is made of nitrile butadiene or fluororubber; the elastic sealing plate 20 is made of S30110 high-elasticity stainless steel plate.
The sealing unit includes an edge support member 31, a rubber gasket 32, and a first fastener 34, the edge support member 31 being fixed to the floating vessel edge plate 10, the first fastener 34 including an edge plate bolt 341 and a nut 342; the edge plate bolt 341 is matched with the nut 342 to fasten the edge support part 31, the second end of the rubber sealing diaphragm 70, the rubber gasket 32, the inner elastic plate 21, the first end of the rubber sealing diaphragm 70 and the outer elastic plate 22 on the edge support part 31, and the first fasteners 34 are arranged on the pontoon edge plate 10 at intervals along the circumferential direction of the storage tank; the edge support member 31 is an angle steel, and is welded to the pontoon edge plate 10 to change the connection form of the pontoon edge plate 10, so that the structural form of the edge support member is convenient for the installation of the high-efficiency sealing device.
The sealing device also comprises a support plate 41 arranged between the rubber gasket 32 and the edge support part 31, one side of the support plate 41 is fastened at the edge plate 10 of the floating pontoon by a sealing unit, the other side of the support plate extends obliquely upwards towards the direction of the tank wall of the storage tank and is used for supporting the inner elastic plate 21, the extending tail end of the support plate 41 is bent downwards to form an arc-shaped bend angle which is used for being attached to the downward-bent cambered surface of the inner elastic plate 21, the rubber gasket 32 is made of nitrile butadiene or fluororubber material, and the sealing effect between the support plate 70 and the inner elastic plate 21 is improved.
The sealing device further comprises a pressing plate 42, the sealing unit further comprises a U-shaped pressing plate 33, an opening of the U-shaped pressing plate 33 is pressed against the outer elastic plate 22 downwards, and the pressing plate 42 is pressed on the top of the outer elastic plate 22; the edge plate bolt 341 passes through the edge support member 31, the second end of the rubber sealing diaphragm 70, the support bracket plate 41, the rubber gasket 32, the inner spring plate 21, the first end of the rubber sealing diaphragm 70, the outer spring plate 22, the U-shaped pressing plate 33 and the pressing plate 42 in sequence, and cooperates with the nut 342 to fasten the inner spring plate 21, the rubber sealing diaphragm 70, the outer spring plate 22 and the sealing unit together;
one side of the pressure plate 42 is fastened on the edge plate 10 of the floating pontoon by a sealing unit, and the other side horizontally extends towards the tank wall direction of the storage tank and is used for limiting the bending high point of the outer elastic plate 22 and preventing the permanent deformation possibly caused by the transition bulge of the inner elastic plate and the outer elastic plate; the extended end of the pressing plate 42 extends beyond the extended end of the lug plate 41; the U-shaped pressing plate 33 is arranged between the pressing plate 42 and the outer elastic plate 22 and used for pressing the outer elastic plate 22 and lifting the pressing plate 42, so that the distance between the pressing plate 42 and the outer elastic plate 22 is increased, and the elastic sealing plate 20 can achieve the using effect in an effective space; .
The rubber sealing diaphragm 70 is pressed and attached to the outer side of the vessel edge plate 10 by the support assembly 51 and the bead 52 at the outer side of the vessel edge plate 10, and the support assembly 51 and the bead 52 are fastened to the vessel edge plate 10 by the second fastening members 53.
The trim strips 52 comprise strip-shaped parts which are arranged on the upper part of the pontoon edge plate 10 at intervals along the circumferential direction of the pontoon edge plate 10; the support assembly 51 includes a ring member 511 and an extension member 512, the ring member 511 surrounds the lower end of the vessel edge plate 10 to form a ring to be closely attached to the vessel edge plate 10, and the extension member 512 has one end fixedly connected to the ring member 511 and the other end extending toward the upper portion of the vessel edge plate 10 to the spaced middle portion of the bead 52, and is perpendicular to and staggered with the bead 52.
The second fastening member 53 comprises a bolt 531, a washer 532 and an outer nut 533, the bolt 531 being fastened by the washer 532 and the outer nut 533 at the end near the tank wall side passing through the support assembly 51 or the bead 52, the rubber seal membrane 70, the pontoon edge plate 10 and the edge support member 31 in this order.
The utility model discloses a concrete step of installation as follows:
(1) fixing an edge support part 31 on a floating roof tank wall in the circumferential direction of a floating vessel edge plate 10, punching a second end of a rubber sealing diaphragm 70, enabling punched hole positions to correspond to edge plate hole positions on the edge support part 31 one by one, installing a support assembly 51 and a pressing strip 52 on the outer side surface of the floating vessel edge plate 10, enabling the rubber sealing diaphragm 70 to be positioned on the outer side surface of the floating vessel edge plate 10 to be tightly pressed and attached on the outer side surface of the floating vessel edge plate 10, and installing a second fastening piece 53 on the upper part of the floating vessel edge plate 10 to fasten an extension piece 512 and the pressing strip 52 of the support assembly 51;
(2) mounting the bracket plate 41 in the circumferential direction of the tank wall and after mounting the edge plate bolts 341, mounting a thin nut above the bracket plate 41 to fasten the bracket plate 41 to the edge support member 31; placing a rubber gasket 32 above the support plate 41 to ensure that all thin nuts are placed in the holes of the rubber gasket 32;
(3) installing inner elastic plates 21 along the circumferential direction of the tank wall, punching three holes on each inner elastic plate along the plate width direction to correspond to the three edge plate bolts 341, installing a flat washer nut 343 at a middle hole of each inner elastic plate 21, and fastening the inner elastic plates 21 at the edge plates 10 of the floating pontoon;
(4) after the first end of the rubber sealing diaphragm 70 is also punched, the punched hole at the first end of the rubber sealing diaphragm 70 is sleeved on the edge plate bolt 341, and the rubber sealing diaphragm 70 is adjusted to enable the rubber sealing diaphragm 70 to be smoothly attached to the surface of the inner elastic plate 21;
(5) the outer elastic plates 22 are arranged along the circumferential direction of the tank wall, three holes are correspondingly punched on each outer elastic plate 22 along the plate width direction to be matched with three edge plate bolts 341 sleeved on the inner elastic plate 21, a hole in the middle of each outer elastic plate 22 is slightly larger than the outer diameter of a flat washer nut 343, so that the outer elastic plates 22 are flatly attached to the surface of the rubber sealing diaphragm 70, and the bottom of each outer elastic plate 22 is welded with a limiting hook for hooking the bottom of the inner elastic plate 21;
(6) flat washer nuts 343 are mounted at the punched holes on both sides of a hole in the middle of each outer spring plate, so that the outer spring plate 22 compresses the inner spring plate 21 at the edge plate 10 of the floating pontoon;
(7) adjusting the positions of the outer elastic plate 22 and the inner elastic plate 21 to ensure that the outer elastic plate 22 and the inner elastic plate 21 clamp the rubber sealing diaphragm 70 together, the contact surfaces of the outer elastic plate 22, the inner elastic plate 21 and the rubber sealing diaphragm 70 are flat and have no wrinkles, and the bottoms of the outer elastic plate 22 and the inner elastic plate 21 are bent towards one side far away from the tank wall and are tightly attached to the tank wall on the inner side of the storage tank;
(8) installing the U-shaped pressing plate 33 and the pressing plate 42 along the circumferential direction of the tank wall, and installing the nut 342, so that the edge supporting member 31, the second end of the rubber sealing diaphragm 70, the supporting plate 41, the rubber gasket 32, the inner spring plate 21, the first end of the rubber sealing diaphragm 70, the outer spring plate 22, the U-shaped pressing plate 33 and the pressing plate 42 are fastened as a whole by the edge plate bolt 341; the rubber sealing diaphragm 70 encloses an oil-free air-tight enclosure.
In order to make the technical solution of the present invention easier to be clearly understood, the following description is made in more detail with reference to fig. 5 and 6.
The utility model discloses the device is in the use, as shown in fig. 5, rubber seal diaphragm 70 has sufficient broad width, cover all spaces in sealed lower part, rubber seal diaphragm's both ends are fixed sealed at the edge board end, and through interior, play the tight laminating jar wall of board clamp outward, the middle part is along with interior, play the other end of board and insert below the liquid level and draw forth the cover on the storage medium liquid level outward together, the support sub-assembly 51 of rethread edge board side compresses tightly the laminating on the edge board, make whole rubber seal diaphragm form airtight utricule structure, form oil-free airtight closed space on storage medium liquid level upper portion.
Normally, as shown in fig. 5B, the width margin of the rubber sealing diaphragm is entirely placed above the liquid level of the storage medium, when the annular space becomes smaller, as shown in fig. 5A, the rubber sealing diaphragm folds and accumulates above the liquid level, and as the annular space becomes larger, as shown in fig. 5C, the folded part will stretch out to cover the liquid level. Through setting up suitable inside and outside bullet board length, can guarantee to have effective sealed within range at this sealing device, when the annular gap changes, the elastic sealing plate is laminated with the jar wall all the time, and the lower extreme is in below the storage tank storage medium liquid level all the time, guarantees the safe operating environment in airtight space of no oil gas.
As shown in fig. 6, fig. 6A does the utility model provides a full compensation elastic seal, fig. 6B are the sponge elastic seal of bag, and fig. 6C is the tubular topping up and seals, as shown in the arrow mark, the utility model discloses a sealed high more than or equal to 600mm of face, conventional sealed face highly is less than 300mm, the utility model discloses a sealed face highly is more than 2 times of conventional sealed face height, has further improved sealed performance.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a floating roof storage tank does not have high-efficient compensation elastic sealing device in oil gas space, the device set up between the inboard tank wall of storage tank and pontoon edge board (10) lateral surface, its characterized in that: the device comprises an integral rubber sealing diaphragm (70), wherein one end, namely a first end, of the rubber sealing diaphragm (70) is fixedly arranged at the upper part of a pontoon edge plate (10) by a sealing unit, the rubber sealing diaphragm (70) extends from the first end to the inner side tank wall of the storage tank, the rubber sealing diaphragm (70) extends downwards along the inner side tank wall of the storage tank to the lower side of the liquid level of storage medium in the storage tank, the lower end of the rubber sealing diaphragm (70) is upwards led out from the inner side tank wall of the storage tank to cover the liquid level of the storage medium in the storage tank and is attached to the liquid level and extends to the outer side face of the pontoon edge plate (10), and the lower end, positioned at the outer side face of the pontoon edge plate (10), of the rubber sealing diaphragm (70) upwards extends along the outer side face of the pontoon edge plate (10) and forms the other end, namely a; the second end and the first end of the rubber sealing diaphragm (70) are fixedly connected with each other through a sealing unit, so that the rubber sealing diaphragm (70) encloses an oil-free airtight space;
the upper end of the rubber sealing diaphragm (70) along the radial direction of the storage tank is in a bent shape, and a fold section which is convenient to extend along the radial direction of the storage tank is arranged at the liquid level of the storage medium attached to the rubber sealing diaphragm (70).
2. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 1, characterized in that: the sealing device is also provided with an elastic sealing plate (20) for clamping the rubber sealing diaphragm (70), the elastic sealing plate (20) comprises an inner elastic plate (21) and an outer elastic plate (22) which are overlapped with each other, and the inner elastic plate (21) and the outer elastic plate (22) are arranged along the circumferential direction of the wall of the storage tank; the elastic sealing plate (20) and the rubber sealing diaphragm (70) are matched with each other to form an elastic body;
the first ends of the inner elastic plate (21) and the outer elastic plate (22) along the plate length direction are fixedly connected with the first end of the rubber sealing diaphragm (70) and are fixedly arranged at the upper part of the pontoon edge plate (10) by a sealing unit; the inner elastic plate (21) and the outer elastic plate (22) clamp the rubber sealing diaphragm (70), and the second ends of the inner elastic plate (21) and the outer elastic plate (22) along the plate length direction extend from the first end of the rubber sealing diaphragm (70) to the inner side tank wall of the storage tank in a bending mode and jointly extend downwards along the inner side tank wall of the storage tank to the lower side of the liquid level of storage medium in the storage tank.
3. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 2, characterized in that: the sealing unit comprises an edge supporting part (31), a rubber gasket (32) and a first fastener (34), wherein the edge supporting part (31) is fixed on a floating vessel edge plate (10), and the first fastener (34) comprises an edge plate bolt (341) and a nut (342); the edge plate bolt (341) is matched with the nut (342) to fasten the edge support part (31), the second end of the rubber sealing diaphragm (70), the rubber gasket (32), the inner elastic plate (21), the first end of the rubber sealing diaphragm (70) and the outer elastic plate (22) on the edge support part (31).
4. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 3, characterized in that: the sealing device further comprises a support plate (41) arranged between the rubber gasket (32) and the edge supporting part (31), one side of the support plate (41) is fastened at the position of the edge plate (10) of the floating pontoon by a sealing unit, the other side of the support plate extends obliquely upwards towards the direction of the wall of the storage tank and is used for supporting the inner elastic plate (21), and the extending tail end of the support plate (41) bends downwards to form an arc-shaped bend angle which is used for being attached to the downward-bent arc surface of the inner elastic plate (21).
5. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 4, wherein: the sealing device further comprises a pressing plate (42), the sealing unit further comprises a U-shaped pressing plate (33), the U-shaped pressing plate (33) is downwards pressed on the outer elastic plate (22) in an opening mode, and the pressing plate (42) is arranged on the top of the outer elastic plate (22) in a pressing mode; the edge plate bolt (341) sequentially penetrates through the edge support part (31), the second end of the rubber sealing diaphragm (70), the support plate (41), the rubber gasket (32), the inner elastic plate (21), the first end of the rubber sealing diaphragm (70), the outer elastic plate (22), the U-shaped pressing plate (33) and the pressing plate (42), and is matched with the nut (342) to fasten the inner elastic plate (21), the rubber sealing diaphragm (70), the outer elastic plate (22) and the sealing unit together;
one side of the pressure plate (42) is fastened on the edge plate (10) of the floating pontoon by a sealing unit, the other side horizontally extends towards the tank wall direction of the storage tank and is used for limiting the bending high point of the external springing plate (22), and the extension distance of the extension end of the pressure plate (42) exceeds the extension distance of the extension end of the supporting bracket plate (41).
6. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 1, characterized in that: the rubber sealing diaphragm (70) is positioned on the outer side surface of the floating vessel edge plate (10) and is pressed and attached to the outer side surface of the floating vessel edge plate (10) through a supporting assembly (51) and a pressing strip (52), and the supporting assembly (51) and the pressing strip (52) are fastened on the floating vessel edge plate (10) through second fasteners (53) respectively.
7. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 6, characterized in that: the batten (52) comprises strip-shaped parts which are arranged on the upper part of the pontoon edge plate (10) at intervals along the circumferential direction of the pontoon edge plate (10); the support assembly (51) comprises ring pieces (511) and extension pieces (512), the ring pieces (511) surround the lower end of the edge plate (10) of the floating pontoon to form a circular ring which is attached to the edge plate (10) of the floating pontoon, one end of each extension piece (512) is fixedly connected to the ring piece (511), and the other end of each extension piece (512) extends to the middle of the interval of the pressing strips (52) towards the upper part of the edge plate (10) of the floating pontoon, and is vertical to the pressing strips (52) and staggered.
8. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 6, characterized in that: the second fastener (53) comprises a bolt (531), a washer (532) and an outer nut (533), the bolt (531) being fastened at its end by the washer (532) and the outer nut (533) by passing through the support assembly (51) or the bead (52), the rubber sealing diaphragm (70), the pontoon edge plate (10) and the edge support member (31) in this order near the tank wall side.
9. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 2, characterized in that: the rubber sealing diaphragm (70) comprises nitrile rubber and fluororubber.
10. The floating roof tank oil-free air space efficient full compensation elastic sealing device of claim 2, characterized in that: the elastic sealing plate (20) is made of S30110 high-elasticity stainless steel plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114955268A (en) * | 2022-06-07 | 2022-08-30 | 北斗启明（北京）节能科技服务有限公司 | Elastic compensation sealing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114955268A (en) * | 2022-06-07 | 2022-08-30 | 北斗启明（北京）节能科技服务有限公司 | Elastic compensation sealing technology |
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