CN217970858U - Double-layer sealing device for inner floating roof storage tank - Google Patents

Abstract

The utility model relates to a double-deck sealing device is used to interior floating roof storage tank. Sealed including current individual layer, in the sealed below of current individual layer, still be provided with bag formula seal assembly, bag formula seal assembly includes the sealed bag body and sealed board that colludes, the sealed bag body is formed by rubber tape parcel sponge, one side of sealed bag body is fixed with the floating roof marginal slab of floating roof storage tank, the opposite side contacts with the jar wall of floating roof storage tank, sealed board setting that colludes is in sealed bag body bottom, and set up between sponge and rubber tape, the one end of sealed board that colludes is fixed with floating roof marginal slab, the other end extends to jar wall direction, and keep the certain distance with the jar wall. The utility model discloses it is sealed to add a small-size bag formula on the sealed basis of the current individual layer of storage tank, and double-deck sealed face can strengthen sealed effect greatly, reduces oil gas and leaks, reduces the oil loss, greatly reduces the risk of storage tank operation.

Description

Double-layer sealing device for inner floating roof storage tank

Technical Field

The utility model belongs to the technical field of the oil storage tank is sealed, concretely relates to double-deck sealing device is used to interior floating roof storage tank.

Background

In recent years, with the continuous development of the petroleum and petrochemical industry, the types of the product oil are continuously enriched, and the number of the internal floating roof storage tanks for containing the transfer oil and the product oil is also continuously increased. The widely used sealing form of the annular gap between the floating roof and the wall of the inner floating roof storage tank is single-layer sealing, such as tongue-shaped sealing, sheet sponge sealing and the like. However, due to the improvement of the requirements of safety, environmental protection, loss reduction and the like, the simple single-layer sealing is difficult to meet the requirements, and a more effective and safer sealing form needs to be adopted to meet the requirements of sealing, environmental protection and safety.

At present, part of oil storage tanks are sealed by double layers, but the original seals are usually required to be completely replaced when the double-layer seals are installed, the double-layer seals are difficult to directly form matching with the existing single-layer seals, inconvenience and waste in installation and use are caused, and meanwhile, the price is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem in the prior art, the utility model provides an interior floating roof storage tank is with double-deck sealing device, this double-deck is sealed to increase the higher sealing of one security on original sealed basis to reduce the oil loss, reduce the risk of storage tank operation.

The utility model adopts the technical proposal that:

the utility model provides an interior floating roof storage tank is with double-deck sealing device, is sealed including current individual layer the sealed below of current individual layer still is provided with bag formula seal assembly, bag formula seal assembly includes sealed bag body and sealed board that colludes, sealed bag body is formed by rubber tape parcel sponge, one side of sealed bag body is fixed with the floating roof edge board of floating roof storage tank, the opposite side with the jar wall of floating roof storage tank contacts, and sealed board setting of colluding is in sealed bag body bottom sets up between sponge and the rubber tape, sealed one end of colluding the board with the floating roof edge board of floating roof storage tank is fixed, the other end to the jar wall direction of floating roof storage tank extends, and with the jar wall keeps the certain distance.

Preferably, the existing single-layer seal is a tongue-type seal or a sheet-like sponge seal.

Preferably, the rubber belt is made of fluororubber, nitrile rubber or ethylene propylene diene monomer.

Preferably, the sealing hook plate is Z-shaped, and the bending angle of the sealing hook plate is smaller than 90 degrees.

Preferably, the bent part of the sealing hook plate is set to be a round angle.

Preferably, the sealing bag body is fixed to the floating roof edge plate through a rubber belt, and particularly, two ends of the rubber belt are overlapped and are pressed and fixed to the upper surface of the floating roof edge plate through a fastening piece.

Preferably, the fixed ends of the sealing hook plate and the floating top edge plate are arranged between two layers of rubber belts in an overlapped mode, the fixed ends of the existing single-layer sealing and the floating top edge plate are arranged above the rubber belts, and the sealing bag body, the sealing hook plate and the existing single-layer sealing are fixed through the same fastening piece.

The beneficial effects of the utility model reside in that:

fig. 1 shows a single-layer tongue type seal, and fig. 2 shows a single-layer sheet sponge seal. The tongue seal or the sheet sponge seal is greatly affected by the annular space between the floating roof edge plate and the wall of the storage tank. When the annular space is increased, as shown in fig. 3, taking the tongue-shaped seal as an example, the sealing surface of the tongue-shaped seal or the sheet-shaped sponge seal is reduced to be a linear seal until the seal is separated from the tank wall and fails; when the annular distance is reduced, the tongue-shaped seal/sheet-shaped sponge seal is flat, the extrusion force between the tongue-shaped seal/sheet-shaped sponge seal and the wall of the tank is weak, the seal is annular, and the arc length of the side line is reduced, as shown in fig. 4 and 5 which take the tongue-shaped seal as an example, the phenomenon that the seal is hollowed out between the tongue-shaped seal and the wall of the tank is caused, so that the seal effect is rapidly reduced, and even the failure is caused.

The utility model discloses on the sealed basis of the current individual layer of storage tank, add a small-size bag formula in the sealed below of this individual layer and seal, sealed face of double-deck can strengthen sealed effect greatly, reduces oil gas and leaks, reduces the oil loss, reduces or eliminates the risk of storage tank operation.

In the device, the support body of the small bag type seal is a sponge, has enough elasticity and compensation, can be sealed in the change range of the normal annular interval, can still be sealed perfectly when the annular interval exceeds the change value, and the change amount of the sealing surface is not large. Tongue-shaped sealing/sheet sponge sealing are used for forming double-layer sealing, so that the sealing effect is greatly enhanced.

The double-layer sealing is suitable for various inner floating roof storage tanks, and according to different storage tank media, the rubber belt material of the bag type sealing can select different rubber types according to the storage media, such as aromatic hydrocarbon, high aromatic hydrocarbon oil and benzene media, and can select fluororubber to manufacture rubber parts; the rubber part can be made of nitrile rubber such as gasoline, diesel oil and crude oil; such as alcohol, ester media, and EPDM rubber for the purpose of darting and smoothing the surface of the workpiece.

The double-layer sealing structure is suitable for storage tanks of various media, has universality for the form of the floating plate of the storage tank, and is suitable for steel floating plates, aluminum floating plates and floating barrel floating plates.

When the storage tank receives and delivers oil, the floating top edge plate can move up and down to drive the sealing device to lift up and down along with the floating top edge plate and rub with the tank wall. The utility model discloses well sealed bag body is soft sealed, therefore its extrusion force with jar wall can not influence floating plate and jar wall when static, and during the motion, the frictional force that sealed extrusion force brought also is very weak for the buoyancy of floating plate, can not cause any harmful effects when the oil developments are received and dispatched to the storage tank equally.

The utility model discloses in, sealed angle of bending that colludes the board is less than 90 and not perpendicular (specific angle can be confirmed according to the actual size of storage tank), can guarantee to collude board top and keep away from the jar wall as far as possible, can not cause because storage tank annular interval diminishes to collude board top to the jar wall, and the damage is sealed, brings the risk.

The utility model provides a double-deck sealing device has both strengthened sealed effect, can reduce oil gas again and leak, reduces the interior oil gas concentration of floating roof storage tank, reduces or has eliminated the risk of storage tank operation, has played the efficiency of good safety, environmental protection.

Drawings

FIG. 1 is a schematic view of a prior art single layer tongue seal arrangement;

FIG. 2 is a schematic view of a prior art single-layer sheet sponge seal structure;

FIG. 3 is a schematic illustration of a single layer tongue seal failing as the annular spacing increases;

FIG. 4 is a schematic view of the deformation of a single layer tongue seal as the annular spacing decreases;

FIG. 5 is an enlarged top view of the tongue seal of FIG. 4 showing a gap between the tongue seal and the can wall;

fig. 6 is a schematic view of a middle-double layer sealing structure of the present invention, wherein the existing single layer sealing is a tongue-type sealing;

fig. 7 is a schematic view of a middle-double layer sealing structure of the present invention, wherein the existing single layer sealing is a sheet-like sponge sealing;

fig. 8 is a structure view of the sealing hook plate, wherein the bending angle alpha is smaller than 90 deg.

The notations in the figures have the following meanings:

11-tank wall 12-floating top edge plate 13-fastener 131-pressing plate

20-existing Single layer seal

30-bag type sealing component 31-rubber belt 32-sponge 33-sealing hook plate

Detailed Description

The technical solutions of the present invention are described below with reference to the drawings of the specification so as to facilitate understanding for those skilled in the art.

As shown in fig. 6 to 8, a double-layer sealing device for an inner floating roof tank comprises a single-layer sealing 20 and a bag-type sealing assembly 30 arranged below the single-layer sealing 20.

The bag type sealing assembly 30 comprises a sealing bag body and a sealing hook plate 33, wherein the sealing bag body is formed by wrapping sponge 32 by a rubber belt 31, one side of the sealing bag body is fixed with the floating roof edge plate 12 of the floating roof storage tank, specifically, the sealing bag body is fixed with the floating roof edge plate 12 by the rubber belt 31, two ends of the rubber belt 31 wrapped with the sponge 32 are overlapped, and the rubber belt 31 is tightly pressed and fixed on the upper surface of the floating roof edge plate 12 by a fastener 13; the other side of the sealing bag body is in contact with the tank wall 11 of the floating roof storage tank.

The rubber belt 31 may be made of fluororubber, nitrile rubber or ethylene propylene diene monomer rubber according to the different media in the oil storage tank.

The sealing hook plate 33 is arranged at the bottom of the sealing bag body and is arranged between the sponge 32 and the rubber belt 31. In this embodiment, the sealing hook plate 33 is Z-shaped, and the bending angle thereof is a circular angle, and the bending angle α is smaller than 90 °.

One end of the sealing hook plate 33 is fixed to the floating roof edge plate 12 of the floating roof tank, the fixed end is disposed between two layers of the rubber tape 31, and the other end extends in the direction of the tank wall 11 of the floating roof tank, and the sealing hook plate 33 is spaced from the tank wall 11 to prevent the sealing hook plate 33 from damaging the tank wall 11.

The fixed ends of the existing single-layer seal 20 and the floating top edge plate 12 are arranged above the rubber belt 31, and the sealing bag body, the sealing hook plate 33 and the existing single-layer seal 20 are all fixed by the same fastener 13.

The fastening member 13 is a bolt and nut combination, and the fastening member 13 further includes a pressing plate 131 disposed on the upper surface of the existing single-layer seal 20.

In this embodiment, the conventional single-layer seal 20 is a tongue-type seal or a sheet-like sponge seal. Tongue seal as shown in fig. 3, the tongue seal is an integral rubber band; the sheet-like sponge seal is formed by wrapping a bent sponge sheet with a rubber tape as shown in fig. 4.

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 (8)

1. The utility model provides an interior floating roof double-deck sealing device for storage tank, includes that current individual layer is sealed (20), its characterized in that the below of current individual layer is sealed (20), still is provided with bag formula seal assembly (30), bag formula seal assembly (30) are including sealed bag body and sealed board (33) that colludes, sealed bag body is formed by rubber tape (31) parcel sponge (32), one side of sealed bag body is fixed with the floating roof marginal board (12) of floating roof storage tank, the opposite side with the tank wall (11) of floating roof storage tank contact, and sealed board (33) that collude set up sealed bag body bottom, and set up and be in between sponge (32) and rubber tape (31), the one end of sealed board (33) with the floating roof marginal board (12) of floating roof storage tank are fixed, the other end to the tank wall (11) direction of floating roof storage tank extends, and with tank wall (11) keep a certain distance.

2. The double-deck sealing device for an internal floating roof tank as claimed in claim 1, wherein the existing single-deck seal (20) is a tongue-type seal or a sheet-type sponge seal.

3. The double-layer sealing device for the inner floating roof storage tank is characterized in that the rubber belt (31) is made of fluororubber, nitrile rubber or ethylene propylene diene monomer.

4. The double-deck sealing device for an internal floating roof tank as claimed in claim 1, wherein the sealing hook plate (33) is Z-shaped and bent at an angle of less than 90 °.

5. The double-layer sealing device for the internal floating roof tank as claimed in claim 4, wherein the bent portion of the sealing hook plate (33) is provided with a rounded corner.

6. The double-layer sealing device for the internal floating roof tank as claimed in claim 1, wherein the sealing bag body is fixed with the floating roof edge plate (12) through a rubber belt (31), and particularly, the two ends of the rubber belt (31) after wrapping the sponge (32) are overlapped and are tightly pressed and fixed on the upper surface of the floating roof edge plate (12) through a fastening piece (13).

7. The double-layer sealing device for the internal floating roof tank as claimed in claim 6, wherein the fixed ends of the sealing hook plate (33) and the floating roof edge plate (12) are arranged between two layers of the rubber belt (31) which are overlapped, the fixed ends of the existing single-layer seal (20) and the floating roof edge plate (12) are arranged above the rubber belt (31), and the sealing bag body, the sealing hook plate (33) and the existing single-layer seal (20) are all fixed by the same fastener (13).

8. The double-deck sealing device for an internal floating roof tank as claimed in claim 6 or 7, wherein the fastening member (13) is a bolt and nut combination, and the fastening member (13) further comprises a pressing plate (431) provided on the upper surface of the existing single-deck seal (20).

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