Floating roof devices for oil storage tanks

Abstract

This utility model discloses a floating roof device for oil storage tanks. The outrigger includes an outrigger body, a first sleeve, a connecting seat, a connecting assembly, and a sealing sleeve. The outrigger body passes through the first sleeve, the connecting seat is fitted onto the first sleeve and fixed to it, and the connecting seat is also fixed to the floating roof. The connecting assembly passes through the first sleeve and the outrigger body and fixes them together. The sealing sleeve covers the outrigger body and the first sleeve. One end of the primary sealing slip assembly and the secondary sealing slip assembly is fixed to the side plate, which is fixed to the floating roof. The outrigger also includes a bag-shaped component and a locking component. A portion of the outrigger body, the first sleeve, the connecting assembly, and the sealing sleeve are located inside the bag-shaped component. The locking component fixes the bag-shaped component to the first sleeve, forming a sealed space between the bag-shaped component and the first sleeve. This utility model overcomes the shortcomings of the sealing sleeve and collects leaked oil and gas, preventing further leakage.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas sealing technology for storage tanks, and specifically to a floating roof device for oil storage tanks. Background Technology

[0002] During oil storage and transportation, due to limitations in technology and equipment, some light components in crude oil and light oils (such as gasoline) are easily released into the air, resulting in significant evaporation losses. In recent years, thanks to the application of floating roof tanks and internal floating roof tanks, the upgrading of floating roof equipment, and the implementation of other energy-saving measures, oil losses have been brought under control.

[0003] To reduce oil and gas evaporation, a fully liquid-contact floating roof is generally used to isolate oil and gas from air. The fully liquid-contact floating roof includes a floating roof, outriggers, a primary sealing slip assembly, and a secondary sealing slip assembly. The upper ends of the outriggers pass through the floating roof and are exposed to the air. The outriggers are fixed to the floating roof. The primary sealing slip assembly bends downward and fits with the side wall of the storage tank, while the secondary sealing slip assembly bends upward and fits with the side wall of the storage tank. The primary and secondary sealing slip assemblies provide a seal for the space between the floating roof and the storage tank, thereby preventing oil and gas from escaping through the gap between the floating roof and the storage tank.

[0004] The outrigger includes an outrigger body, a first sleeve, a connecting seat, a connecting assembly, and a sealing sleeve. The outrigger body passes through the first sleeve, the connecting seat is fitted onto the first sleeve, and the connecting seat is fixed to the first sleeve. The connecting seat is also fixed to the floating roof. The connecting assembly passes through the first sleeve and the outrigger body and fixes the two together. Because there is a gap between the outrigger body and the first sleeve, although the sealing sleeve is used to seal the gap between the outrigger body and the first sleeve, the sealing sleeve is exposed to air. After long-term use, the sealing sleeve will age, causing the sealing effect of the sealing sleeve to gradually fail, resulting in oil and gas leakage.

[0005] In addition, the existing primary sealing sliding shoe assembly has a relatively simple structure with low elasticity and strength. When the primary sealing sliding shoe assembly moves downward with the floating roof, it is deformed by the oil and wax layer on the inner wall of the storage tank, which can easily cause sealing failure. Utility Model Content

[0006] This invention provides a floating roof device for oil storage tanks. This invention can make up for the deficiencies of sealing sleeves, collect leaked oil and gas and prevent leakage.

[0007] The technical solutions to the above technical problems are as follows:

[0008] A floating roof device for oil storage tanks includes a floating roof, outriggers, a primary sealing slip assembly, a secondary sealing slip assembly, and a side plate. The upper end of the outrigger passes through the floating roof. The outrigger includes an outrigger body, a first sleeve, a connecting seat, a connecting assembly, and a sealing sleeve. The outrigger body passes through the first sleeve, and the connecting seat is fitted onto the first sleeve and fixed to the first sleeve. The connecting seat is also fixed to the floating roof. The connecting assembly passes through the first sleeve and the outrigger body and fixes them together. The sealing sleeve covers the outrigger body and the first sleeve. Both the primary and secondary sealing slip assemblies are curved. One end of the primary and secondary sealing slip assemblies is fixed to the side plate, and the side plate is fixed to the floating roof. The outrigger also includes a bag-shaped component and a locking component. A portion of the outrigger body and the first sleeve, as well as the connecting assembly and the sealing sleeve, are located inside the bag-shaped component. The locking component fixes the bag-shaped component to the first sleeve, forming a sealed space between the bag-shaped component and the first sleeve.

[0009] Furthermore, the bag-shaped component is made of chlorosulfonated polyethylene.

[0010] Furthermore, the outrigger also includes a filler material disposed between the bag-shaped component and the first sleeve, and a locking component secures the bag-shaped component, the filler material, and the first sleeve together.

[0011] Furthermore, the filler is an XPE pad.

[0012] Furthermore, the primary sealing slip assembly includes a slip plate, a packing plate, a diaphragm, a spring plate, a support strip, and a clamping assembly. The slip plate and the packing plate are arranged alternately along the circumferential direction. The slip plate is located outside the packing plate and overlaps the packing plate. The diaphragm is located inside the packing plate. The spring plate is located between the packing plate and the diaphragm. The support strip is located inside the diaphragm. One end of the slip plate, the packing plate, the diaphragm, the spring plate, and the support strip is clamped between the clamping assembly and the edge plate.

[0013] This invention forms a sealed space between the bag-shaped component and the first sleeve. The leg body, a part of the first sleeve, the connecting components, and the sealing sleeve are located within the sealed space. When oil or gas leaks from between the sealing sleeve and the leg body, or from between the sealing sleeve and the first sleeve, the oil or gas enters the sealed space. Through the action of the bag-shaped component and the locking component, oil or gas leakage is prevented, and the sealing sleeve is protected. Attached Figure Description

[0014] Figure 1 This is a perspective view of the floating roof device for oil storage tanks according to this utility model.

[0015] Figure 2 This is a cross-sectional view of the outrigger.

[0016] Figure 3This is a cross-sectional view of the sealing sleeve.

[0017] Figure 4 This is a three-dimensional view of a primary sealing slipper assembly.

[0018] Figure 5 In order to be in Figure 4 This is a diagram showing the parts that have been partially hidden.

[0019] Figure 6 To observe from another perspective Figure 5 A schematic diagram.

[0020] Labels in the attached diagram:

[0021] Floating plate 1, outrigger 2, outrigger body 2a, first sleeve 2b, connecting seat 2c, connecting assembly 2d, sealing sleeve 2e, bag-shaped component 2f, locking component 2g, filler 2h, primary sealing sliding shoe assembly 3, sliding shoe plate 3a, filler plate 3b, diaphragm 3c, spring plate 3d, support bar 3e, pressing assembly 3f, bending part 3g, folded edge 3h, secondary sealing sliding shoe assembly 4, edge plate 5. Detailed Implementation

[0022] like Figures 1 to 6 As shown, the floating roof device for oil storage tanks of this utility model includes a floating roof 1, support legs 2, a primary sealing slip assembly 3, a secondary sealing slip assembly 4, and a side plate 5. The floating roof 1 is formed by assembling several floating boxes and fixing them with bolts. The upper end of the support leg 2 passes through the floating roof 1. The floating roof 1 is provided with multiple through holes, and each through hole cooperates with a support leg 2.

[0023] The outrigger 2 includes an outrigger body 2a, a first sleeve 2b, a connecting seat 2c, a connecting assembly 2d, a sealing sleeve 2e, a bag-shaped component 2f, and a locking component 2g. The outrigger body 2a is a hollow tube, and a pad is fixed to the lower end of the outrigger body 2a. The upper end of the outrigger body 2a passes through the first sleeve 2b, which passes through a through hole on the floating plate 1. The first sleeve 2b and the through hole on the floating plate 1 are fitted with a clearance fit.

[0024] The connecting seat 2c is fitted onto the first sleeve 2b and fixed to the first sleeve 2b. The connecting seat 2c and the first sleeve 2b are preferably fixed by welding. The connecting seat 2c is also fixed by welding to the floating plate 1. The connecting component 2d passes through the first sleeve 2b and the outrigger body 2a and fixes the two into one. Radial through holes are provided on the circumferential surfaces of the outrigger body 2a and the first sleeve 2b. The connecting component 2d consists of a screw, a sealing ring, and a nut. The sealing ring is fitted onto the screw. The screw passes through the radial through holes of the outrigger body 2a and the first sleeve 2b and is threadedly connected to the nut. Thus, the connecting component 2d fixes the first sleeve 2b and the outrigger body 2a into one.

[0025] A sealing sleeve 2e covers the outrigger body 2a and the first sleeve 2b. Both the outrigger body 2a and the first sleeve 2b are threaded. The sealing sleeve 2e is threadedly connected to the outrigger body 2a and the first sleeve 2b respectively. The sealing sleeve 2e includes a first threaded pipe 2e1, a second threaded pipe 2e2, and a connecting pipe section 2e3. One end of the connecting pipe section 2e3 is fixed to the first threaded pipe 2e1, and the other end of the connecting pipe section 2e3 is fixed to the second threaded pipe 2e2. The first threaded pipe 2e1 is threadedly connected to the first sleeve 2b, and the second threaded pipe 2e2 is threadedly connected to the outrigger body 2a.

[0026] The sealing sleeve 2e is located above the connecting assembly 2d, and the opening of the bag-shaped component 2f is located below the connecting assembly 2d. The leg body 2a, a portion of the first sleeve 2b, the connecting assembly 2d, and the sealing sleeve 2e are located inside the bag-shaped component 2f. The locking component 2g fixes the bag-shaped component 2f to the first sleeve 2b, forming a sealed space between them. When oil or gas leaks from between the sealing sleeve 2e and the leg body 2a, or from between the sealing sleeve 2e and the first sleeve 2b, the oil or gas enters the sealed space. Through the action of the bag-shaped component 2f and the locking component 2g, oil or gas leakage is prevented, and the sealing sleeve 2e is protected.

[0027] In this invention, the bag-shaped component 2f is made of chlorosulfonated polyethylene. Chlorosulfonated polyethylene possesses excellent ozone resistance, atmospheric aging resistance, and chemical corrosion resistance, as well as good physical and mechanical properties, aging resistance, heat and low-temperature resistance, oil resistance, flame retardancy, abrasion resistance, and electrical insulation. Therefore, the bag-shaped component 2f can maintain its properties even after long-term exposure to air. The locking component 2g can be a clamp or a stainless steel cable tie.

[0028] Because the wall thickness of the bag-shaped component 2f is relatively thin, directly locking the bag-shaped component 2f with the first sleeve 2b using the locking component 2g would easily cause damage to the part in contact with the locking component 2g under the long-term force of airflow. Therefore, the support leg 2 in this utility model also includes a filler 2h, which is disposed between the bag-shaped component 2f and the first sleeve 2b. The filler 2h is preferably an XPE pad. After the bag-shaped component 2f, the filler 2h, and the first sleeve 2b are fastened together by the locking component 2g, the filler 2h not only forms a good seal between the bag-shaped component 2f and the first sleeve 2b, but also effectively increases the thickness of the fastened part between the bag-shaped component 2f and the first sleeve 2b, making the bag-shaped component 2f less prone to damage under the action of airflow.

[0029] Both the primary sealing slipper assembly 3 and the secondary sealing slipper assembly 4 are curved. After the primary sealing slipper assembly 3 is bent, its other end extends downward, and after the secondary sealing slipper assembly 4 is bent, its other end extends upward. One end of the primary sealing slipper assembly 3 and the secondary sealing slipper assembly 4 is fixed to the side plate 5, which is fixed to the floating plate 1. The side plate 5 consists of a side plate body and a folded edge located at the upper end of the side plate body. The angle formed between the folded edge and the side plate body is 90°.

[0030] The primary sealing sliding track assembly 3 includes a sliding track plate 3a, a packing plate 3b, a diaphragm 3c, a spring plate 3d, a support strip 3e, and a clamping assembly 3f. The sliding track plate 3a and the packing plate 3b are arranged alternately along the circumference. The sliding track plate 3a is located outside the packing plate 3b and overlaps it. The diaphragm 3c is located inside the packing plate 3b. The spring plate 3d is located between the packing plate 3b and the diaphragm 3c. The support strip 3e is located inside the diaphragm 3c. One end of the sliding track plate 3a, the packing plate 3b, the diaphragm 3c, the spring plate 3d, and the support strip 3e is clamped between the clamping assembly 3f and the edge plate 5. Through the action of the spring plate 3d, the overall strength of the primary sealing sliding track assembly 3 is increased. On the other hand, due to the elasticity of the spring plate 3d, the primary sealing sliding track assembly 3 can fit snugly against the inner wall of the storage tank.

[0031] The other end of the sliding shoe 3a is bent to form a bent part 3g, which is hook-shaped. The bent part 3g scrapes off the oil and wax adhering to the inner wall of the storage tank. The other end of the packing plate 3b is folded to form a folded edge 3h, which is inserted into the bent part 3g. The folded edge 3h supports the bent part 3g, thereby increasing the strength of the bent part 3g.

[0032] The technical solutions in the embodiments of this utility model have been clearly and completely described above. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A floating roof assembly for oil storage tanks, comprising a floating roof (1), outriggers (2), a primary sealing slip assembly (3), a secondary sealing slip assembly (4), and a side plate (5). The upper end of the outriggers (2) passes through the floating roof. The outriggers (2) include an outrigger body (2a), a first sleeve (2b), a connecting seat (2c), a connecting assembly (2d), and a sealing sleeve (2e). The outrigger body (2a) passes through the first sleeve (2b), and the connecting seat (2c) is fitted onto the first sleeve (2b). The connecting seat (2c) is connected to the first sleeve (2b). 2b) Fixed, the connecting seat (2c) is also fixed to the floating plate (1), the connecting assembly (2d) passes through the first sleeve (2b) and the leg body (2a) and fixes the two into one piece, the sealing sleeve (2e) covers the leg body (2a) and the first sleeve (2b), the primary sealing sliding shoe assembly (3) and the secondary sealing sliding shoe assembly (4) are both curved, one end of the primary sealing sliding shoe assembly (3) and the secondary sealing sliding shoe assembly (4) is fixed to the side plate (5), the side plate (5) is fixed to the floating plate (1), characterized in that, The outrigger (2) also includes a bag-shaped component (2f) and a locking component (2g). A portion of the outrigger body (2a) and the first sleeve (2b), as well as the connecting assembly (2d) and the sealing sleeve (2e), are located inside the bag-shaped component (2f). The locking component (2g) fixes the bag-shaped component (2f) to the first sleeve (2b), forming a sealed space between the bag-shaped component (2f) and the first sleeve (2b).

2. The floating roof assembly for oil product storage tanks of claim 1, wherein, The bag-shaped component (2f) is made of chlorosulfonated polyethylene.

3. The floating roof assembly for an oil product storage tank according to claim 1 or 2, wherein The outrigger (2) also includes a filler (2h) disposed between the bag-shaped component (2f) and the first sleeve (2b), and the bag-shaped component (2f), the filler (2h) and the first sleeve (2b) are fastened together by the locking component (2g).

4. The floating roof assembly for oil storage tanks of claim 3, wherein, The filler (2h) is an XPE pad.

5. The floating roof assembly for oil storage tanks of claim 1, wherein, The primary sealing sliding track assembly (3) includes a sliding track plate (3a), a packing plate (3b), a diaphragm (3c), a spring plate (3d), a support strip (3e), and a clamping assembly (3f). The sliding track plate (3a) and the packing plate (3b) are arranged alternately along the circumference. The sliding track plate (3a) is located outside the packing plate (3b) and overlaps the packing plate (3b). The diaphragm (3c) is located inside the packing plate (3b). The spring plate (3d) is located between the packing plate (3b) and the diaphragm (3c). The support strip (3e) is located inside the diaphragm (3c). One end of the sliding track plate (3a), the packing plate (3b), the diaphragm (3c), the spring plate (3d), and the support strip (3e) is clamped between the clamping assembly (3f) and the edge plate (5).

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