CN114348483A - Sealing device and method for eliminating oil-gas space - Google Patents
Sealing device and method for eliminating oil-gas space Download PDFInfo
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- CN114348483A CN114348483A CN202111462937.7A CN202111462937A CN114348483A CN 114348483 A CN114348483 A CN 114348483A CN 202111462937 A CN202111462937 A CN 202111462937A CN 114348483 A CN114348483 A CN 114348483A
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Abstract
The invention relates to the technical field of oil-gas storage sealing, in particular to a sealing device and a method for eliminating an oil-gas space, and the sealing device comprises a tank wall of an oil-gas storage tank, a floating disc, a primary sealing device and a secondary sealing device, wherein the primary sealing device and the secondary sealing device are used for sealing an annular gap between the tank wall of the oil-gas storage tank and the floating disc, and a limiting plate is arranged on the side wall of the top end of the floating disc; the sealing device also comprises a space sealing device, and the space sealing device is used for eliminating an oil-gas space between the primary sealing device and the secondary sealing device. The sealing device provided by the invention has the following beneficial effects: the oil gas leaked by the primary sealing device is prevented from losing to the atmosphere, and rain, wind, sand and the like can be prevented from entering the space of the primary sealing device and the space of the secondary sealing device; the oil gas space between the primary sealing and the secondary sealing is eliminated, the phenomenon that oil gas stored in the space of the original primary sealing device and the space of the secondary sealing device exceeds the standard is solved, and potential safety hazards of equipment can not be brought under the severe weather condition.
Description
Technical Field
The invention relates to the technical field of oil-gas storage sealing, in particular to a sealing device and a sealing method for eliminating an oil-gas space.
Background
The general excessive discharge of VOCs in a large-scale crude oil storage tank with an external floating roof does not meet the requirement that the concentration of oil gas leakage points on the storage tank does not exceed 5000 mu mol/mol (2000 mu mol/mol in an important area) in 8.2 volatile organic compound unorganized discharge control standards (GB 37822). And the requirement that the oil-gas space of a primary sealing space and a secondary sealing space is reduced as much as possible in the China petrochemical 2011[754] 4.1.4'. According to the standard requirement, an oil-free air sealing device is urgently required to be developed. The oil gas leaked by the primary sealing device is prevented from losing to the atmosphere, and rain, wind, sand and the like can be prevented from entering the space of the primary sealing device and the space of the secondary sealing device. The oil-free air sealing device is mainly installed between the primary sealing device and the secondary sealing device, the gap at the annular sealing position of the floating disc is +/-100 mm, and the research and development of the oil-gas space sealing device is mainly used for eliminating the oil-gas space between the primary sealing device and the secondary sealing device and ensuring the safe use of equipment of the storage tank device. Finally, the problem that oil gas stored in the space of the primary sealing device and the space of the secondary sealing device exceed the standard is solved, and potential safety hazards of equipment cannot be brought under the severe weather condition.
Disclosure of Invention
In order to solve the technical problems, the invention provides the sealing device for eliminating the oil-gas space, which solves the problem that the oil-gas stored in the space of the original primary sealing device and the secondary sealing device exceeds the standard and eliminates the oil-gas space between the primary sealing device and the secondary sealing device.
The invention provides a sealing device for eliminating an oil-gas space, which comprises a tank wall of an oil-gas storage tank, a floating disc, a primary sealing device and a secondary sealing device, wherein the primary sealing device and the secondary sealing device are used for sealing an annular gap between the tank wall of the oil-gas storage tank and the floating disc; the sealing device also comprises a space sealing device, and the space sealing device is used for eliminating an oil-gas space between the primary sealing device and the secondary sealing device.
Preferably, the space sealing device comprises a reinforced sealing plate, a rubber sealing strip, a filler and a fixing piece; the filler is formed by bonding a rubber sealing tape and polyurethane foam into an annular whole; the strong sealing plate is fixed above the filler through a fixing piece.
Preferably, the reinforcing sealing plate is made of an elastic synthetic rubber material.
Preferably, one end of the reinforcing sealing plate is fixed above the filler through a fixing piece, and the other end of the reinforcing sealing plate is in extrusion elastic contact with the tank wall.
Preferably, an oil-gas barrier film is arranged between the space sealing device and the secondary sealing device.
Preferably, the oil gas barrier film is arranged between the space sealing device and the secondary sealing device and clings to the tank wall, the upper end of the oil gas barrier film is fixedly connected with the secondary sealing device, and the lower end of the oil gas barrier film is in close contact with the lower surface of the reinforcing sealing plate and is fixedly connected with the space sealing device.
Preferably, the fixing piece is made of stainless steel, and the fixing modes of the fixing piece, the strong sealing plate and the floating plate are both bolt fixing.
Preferably, the reinforcing sealing plate is made of non-pore nitrile rubber with the hardness of 80-85, the length of the reinforcing sealing plate is 360mm, the width of the reinforcing sealing plate is 7mm, and the top of the end, contacting the tank wall, of the reinforcing sealing plate is arc-shaped.
Preferably, the rubber sealing tape is a whole rubber sealing tape without joints in the middle, and the filler monomer only has one joint which is overlapped by not less than 600mm after being wound to form the rubber sealing tape.
As a specific application of the invention, the invention also provides a sealing method for eliminating the oil-gas space, which comprises an oil-gas storage tank, wherein the oil-gas storage tank is sealed by adopting the sealing device for eliminating the oil-gas space.
Compared with the related art, the sealing device for eliminating the oil-gas space provided by the invention has the following beneficial effects:
the oil gas leaked by the primary sealing device is prevented from losing to the atmosphere, and rain, wind, sand and the like can be prevented from entering the space of the primary sealing device and the space of the secondary sealing device;
the oil-gas space between the primary seal and the secondary seal is eliminated, and the safe use of the storage tank equipment is ensured;
the problem that oil gas stored in the space of the original primary sealing device and the space of the secondary sealing device exceeds the standard is solved, and potential safety hazards of equipment can not be brought under the severe weather state.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the space sealing apparatus of the present invention;
FIG. 3 is a schematic view of the structure of the reinforced sealing plate of the present invention.
Reference numbers in the figures: 1. reinforcing the sealing plate; 2. a limiting plate; 3. a rubber sealing tape; 4. a filler; 5. a fixing member; 10. a floating plate; 11. a tank wall; 20. a space sealing device; 21. an oil and gas barrier film; 22. a secondary sealing device; 23. and (5) primary sealing device.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Referring to fig. 1 and 2, the sealing device for eliminating the oil-gas space comprises a tank wall 11 of an oil-gas storage tank, a floating plate 10, a primary sealing device 23 and a secondary sealing device 22, wherein the primary sealing device 23 and the secondary sealing device 22 are used for sealing an annular gap between the tank wall 11 of the oil-gas storage tank and the floating plate 10, and a limiting plate 2 is arranged on the side wall of the top end of the floating plate 10; the sealing device also comprises a space sealing device 20, and the space sealing device 20 is used for eliminating oil gas space between the primary sealing device 23 and the secondary sealing device 22. The primary sealing device 23 adopts a full immersion structure under the action of the limiting plate 2. The sealing immersion depth is not less than 30mm, wherein the primary sealing device 23 and the secondary sealing device 22 are the prior art.
Referring to fig. 1 and 2, the space sealing device 20 includes a reinforcing sealing plate 1, a rubber sealing tape 3, a packing 4, and a fixing member 5; the filler 4 is formed by winding a rubber sealing belt 3 on polyurethane foam and bonding the rubber sealing belt to form an annular whole; the reinforcing sealing plate 1 is fixed above the filler 4 through a fixing piece 5; space seal device 20 adopts 3 cladding elastic polyurethane foam of rubber sealing strip 4, and 3 inside support piece that adopt of rubber sealing strip are spacing, and upper portion can adopt the clamp plate location, and the clamp plate that adopts here has the screw and is connected a set of bolt of sharing with reinforcing seal plate 1 and mounting 5, and reinforcing seal plate 1 provides spacing pressure for space seal device 20 together with the clamp plate. The inside of the rubber sealing belt 3 is provided with a specially-made high-end special-shaped foam filler which can be made of soft polyether polyurethane foam plastic, and the upper part of the rubber sealing belt 3 is additionally provided with a set of flexible reinforcing sealing plate 1 fixed on the fixing piece 5. Further reduce the excessive possibility of oil gas volatilization, the clamp plate should adopt stainless steel.
Referring to fig. 3, the reinforcing sealing plate 1 is made of an elastic synthetic rubber material, as a specific embodiment, the thickness of the reinforcing sealing plate 1 is 7mm, the length of the reinforcing sealing plate is 360mm, the width of a single reinforcing sealing plate 1 is 300mm, one end of the single reinforcing sealing plate 1 is provided with two symmetrical screw holes, and the distance between the tank wall 11 and the edge of the floating plate 10 is 250mm in this embodiment. The inner diameter of the storage tank is 80000 mm.
Referring to fig. 1 and 2, one end of the reinforced sealing plate 1 is fixed above the filler 4 through a fixing member 5, and the other end is in elastic contact with the tank wall 11; an oil-gas barrier film 21 is arranged between the space sealing device 20 and the secondary sealing device 22; the oil gas barrier film 21 is arranged between the space sealing device 20 and the secondary sealing device 22 and clings to the tank wall 11, the upper end of the oil gas barrier film 21 is fixedly connected with the secondary sealing device 22, and the lower end of the oil gas barrier film is tightly contacted with the lower surface of the reinforcing sealing plate 1 and is fixedly connected with the space sealing device 20. The lower part of the rubber sealing belt 3 is attached to the upper part of the primary sealing device 23, certain pressure is provided for the full-immersion structure design of the primary sealing device 23, and better conditions are provided for the full-immersion structure design of the primary sealing device 23 by matching with the limiting plate 2. Strengthen closing plate 1 and compress tightly oil gas barrier film 21 simultaneously, flexible strengthening closing plate 1 is fixed on limiting plate 2 that the lateral wall set up in floating plate 10 top simultaneously through mounting 5. Thus, the space sealing device 20, the primary sealing device 23 and the secondary sealing device 22 form a whole set of closed state, and oil-gas space between the seals is eliminated.
Referring to fig. 1 and 2, the fixing member 5 is made of stainless steel, the fixing manner of the fixing member 5, the strong sealing plate 1 and the floating plate 10 is bolt fixing, the bolt is preferably a round-head bolt, the length of both sides of a single L-shaped plate can be 50mm, and the width and the screw hole distance are consistent with the width and the screw hole distance of the strong sealing plate 1; also, the screw holes have the same diameter, and as an embodiment of the present invention, the width is 300mm, the screw hole distance is 200mm, and the screw hole diameter is 14mm, and an elliptical screw hole may be used.
Referring to fig. 3, the reinforced sealing plate 1 is made of non-porous nitrile rubber with a hardness of 80-85 to ensure that the reinforced sealing plate can be bent and provide a pressing force for the oil-gas barrier film 21 to cling to the tank wall 11 to further enhance the sealing effect of the device, and as an embodiment of the invention, the length of the reinforced sealing plate 1 is 360mm, the width of the reinforced sealing plate is 7mm, and the top of the contact end with the tank wall 11 is arc-shaped.
Referring to fig. 1 and 2, the rubber sealing tape 3 is a whole tape and has no joint in the middle to avoid the possibility of breaking the rubber sealing tape 3 as much as possible, and the filler 4 monomer only has one joint overlapping by not less than 600mm after winding is formed, so that the overlapping strength is ensured to reduce the possibility of the overlapping joint breaking away.
Referring to fig. 1 and 2, as a specific application of the sealing device of the present invention, the present invention further provides a sealing method for eliminating an oil-gas space, which includes an oil-gas storage tank, wherein the oil-gas storage tank is sealed by using the sealing device for eliminating an oil-gas space of the present invention, and the construction process at a site specifically includes the following steps:
1. manufacturing a primary sealing device 23, placing the primary sealing device between the annular gap between the wall 11 of the storage tank and the floating disc 10, and then installing a limiting plate 2 to provide a limiting condition for a full immersion structure of the primary sealing device 23;
2. manufacturing a secondary sealing device 22, and fixing or limiting the secondary sealing device 22, one end of the oil-gas barrier film 21 and the reinforcing sealing plate 1 through the connection effect of the fixing piece 5 and the limiting plate 2
3. The secondary seal is installed and the other end of the oil and gas barrier film 21 is fixed to the end of the secondary seal 22 close to the tank wall 11.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A sealing device for eliminating an oil-gas space comprises a tank wall (11) of an oil-gas storage tank, a floating disc (10), a primary sealing device (23) and a secondary sealing device (22), wherein the primary sealing device and the secondary sealing device are used for sealing an annular gap between the tank wall (11) of the oil-gas storage tank and the floating disc (10), and a limiting plate (2) is arranged on the side wall of the top end of the floating disc (10); the device is characterized by further comprising a space sealing device (20), wherein the space sealing device (20) is used for eliminating an oil gas space between the primary sealing device (23) and the secondary sealing device (22).
2. A sealing device for eliminating hydrocarbon spaces according to claim 1, characterized in that the space sealing device (20) comprises a reinforced sealing plate (1), a rubber sealing strip (3), a packing (4), a fixing member (5); the filler (4) is formed by winding a rubber sealing belt (3) with polyurethane foam and bonding the rubber sealing belt with the polyurethane foam into an annular whole; the fixing piece (5) is L-shaped, the filler (4) is fixed on the side wall of the floating plate (10) through the fixing piece (5), and the strong sealing plate (1) is fixed above the filler (4) through the fixing piece (5).
3. The sealing device for eliminating an oil-gas space according to claim 2, wherein the reinforcing sealing plate (1) is made of an elastic synthetic rubber material.
4. A sealing device for eliminating gas and oil spaces according to claim 2, characterized in that the reinforcing sealing plate (1) is fixed above the packing (4) at one end by a fixing member (5) and is in pressing elastic contact with the tank wall (11) at the other end.
5. A sealing device for eliminating hydrocarbon spaces according to claim 4, characterized in that a hydrocarbon barrier film (21) is arranged between the space sealing device (20) and the secondary sealing device (22).
6. The sealing device for eliminating the oil-gas space according to claim 5, characterized in that the oil-gas barrier film (21) is arranged between the space sealing device (20) and the secondary sealing device (22) and clings to the tank wall (11), the upper end of the oil-gas barrier film (21) is fixedly connected with the secondary sealing device (22), and the lower end of the oil-gas barrier film is tightly contacted with the lower surface of the reinforcing sealing plate (1) and is fixedly connected with the space sealing device (20).
7. The sealing device for eliminating the oil-gas space according to claim 2, wherein the fixing member (5) is made of stainless steel, and the fixing manner of the fixing member (5) and the strong sealing plate (1) and the floating plate (10) is bolt fixing.
8. The sealing device for eliminating the oil-gas space is characterized in that the reinforced sealing plate (1) is made of non-porous nitrile rubber with the hardness of 80-85, the length of the reinforced sealing plate (1) is 360mm, the width of the reinforced sealing plate is 7mm, and the top of the end, contacting with the tank wall (11), of the reinforced sealing plate is arc-shaped.
9. A sealing device for eliminating hydrocarbon spaces according to claim 2, characterized in that the rubber sealing tape (3) is a whole and has no joint in the middle, and the single filler (4) has only one joint overlapping the rubber sealing tape (3) by not less than 600mm after winding.
10. A method of sealing an hydrocarbon space, comprising a hydrocarbon storage tank, wherein the hydrocarbon storage tank is sealed using the hydrocarbon space sealing apparatus of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462937.7A CN114348483B (en) | 2021-12-02 | 2021-12-02 | Sealing device and method for eliminating oil gas space |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462937.7A CN114348483B (en) | 2021-12-02 | 2021-12-02 | Sealing device and method for eliminating oil gas space |
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| CN114348483A true CN114348483A (en) | 2022-04-15 |
| CN114348483B CN114348483B (en) | 2023-06-16 |
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2021
- 2021-12-02 CN CN202111462937.7A patent/CN114348483B/en active Active
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| CN114348483B (en) | 2023-06-16 |
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