Fixing device for telescopic sleeve of external floating roof
By adding components such as adapters, sealing strips, covers, and cylinders to the external floating roof base, a screw-connected fixing device is formed, which solves the problem of reduced sealing performance caused by corrosion and achieves a safe and rapid transformation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANHEMEI (CHANGZHOU) ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, the sealing performance of the base of the external floating roof deteriorates due to corrosion, and welding modifications pose safety hazards and are time-consuming and labor-intensive, failing to effectively solve the sealing problem.
An adapter, sealing strip, cover, cylinder and connecting plate are added to the original base and connected by screws to form a fixing device to avoid direct welding. The adapter is fastened to the base with screws to form a sealed structure.
It enables a quick and safe solution to sealing performance issues without cutting the base, saving costs and shortening the modification cycle.
Smart Images

Figure CN224492224U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil storage, specifically to a fixing device for a telescopic bladder sleeve for an external floating roof. Background Technology
[0002] A floating roof for an oil storage tank is a floating device that covers the surface of the liquid in the tank. It floats as the liquid level rises and falls, primarily used to reduce evaporation losses of the medium inside the tank and prevent oil and gas leaks. Through buoyancy, the floating roof isolates the liquid inside the tank from the atmosphere, thereby reducing oil evaporation losses.
[0003] In order to collect the oil and gas volatilized in the storage tank, there is usually a telescopic bladder assembly on the external floating roof. The telescopic bladder assembly generally consists of a cloth telescopic bladder sleeve and a support ring installed inside the telescopic bladder sleeve. The volatilized oil and gas enter the telescopic bladder sleeve and are stored.
[0004] In existing technology, a base is fixed to the external floating roof by welding, and the lower end of the telescopic bladder assembly is flanged and fixed to the base with screws. For the external floating roof, since it is exposed to the air for a long time, it is subject to sun and rain, which causes the base to corrode, thus affecting the sealing performance between the base and the telescopic bladder assembly. Considering the oil stored in the oil tank, it is unsafe to directly cut the base welded to the floating roof. Moreover, after cutting, a new base needs to be welded, which is not only time-consuming and labor-intensive, but also prone to safety accidents. Under these circumstances, how to modify the existing base for installing the telescopic bladder is the current problem. Utility Model Content
[0005] This utility model provides a fixing device for a telescopic bladder sleeve for an external floating roof. This utility model is a modification of the existing base, which avoids safety accidents and shortens the modification cycle.
[0006] The fixing device for the telescopic bladder sleeve of the external floating roof includes a base, an adapter, a sealing strip, a cover, a cylinder for connecting the telescopic bladder sleeve, and a connecting plate. The adapter is fixed to the base, the sealing strip is clamped between the adapter and the base, one end of the cover is engaged with the adapter and fixed to the adapter, the other end of the cylinder is fixed to the cover, and the connecting plate is fixed to the cylinder.
[0007] Furthermore, the adapter includes multiple adapter components connected end to end to form a frame. Each adapter component includes a vertical plate, a lower mounting plate, an upper mounting plate, a connecting rod, and a first screw. The lower mounting plate is fixed to one end of the vertical plate and is located below the base. A sealing strip is clamped between the lower mounting plate and the base. The upper mounting plate is fixed to the other end of the vertical plate. One end of the cover is fixed to the upper mounting plate. One end of the connecting rod is fixed to the upper mounting plate or the vertical plate. The first screw passes through the connecting rod and is threadedly connected to the connecting rod and the base, respectively.
[0008] Furthermore, the connecting rod includes a connecting rod body and a first nut. The connecting rod body has a first through hole, and the first nut is fixed to the connecting rod body and engages with the first through hole.
[0009] Furthermore, the cover includes multiple covers, with a first flange fixed at the lower end of each cover and the first flange fixed to the adapter seat. A second flange is provided on the side of each cover, and the second flanges of two adjacent covers are fixed together.
[0010] Furthermore, the cylinder includes multiple arc-shaped cylinder segments and a first fastener. These cylinder segments, when closed, form a circular cylinder. The connecting plate is located inside the cylinder segments, and the first fastener passes through the cylinder segments and the connecting plate.
[0011] Furthermore, it also includes a breathing valve, which is connected to the housing.
[0012] This utility model utilizes the existing base on the external floating roof. By adding an adapter, sealing strip, cover, cylinder, and connecting plate to the base, it solves the problem of the base being unable to seal properly after installing the telescopic bladder sleeve due to corrosion. This utility model allows for installation without cutting off the original base and does not require any machining of the base, thus avoiding the safety risks caused by machining the base. The adapter is fastened to the base as a whole with screws, and the cover is fixed to the adapter with screws. The structure of these parts is simple. Compared with cutting and re-welding the base, it saves costs and shortens the renovation and construction cycle. Attached Figure Description
[0013] Figure 1 This is an assembly drawing of the fixing device for the telescopic bladder sleeve used for the external floating roof.
[0014] Figure 2 This is a cross-sectional view of the fixing device for the telescopic bladder sleeve used for the external floating roof.
[0015] Figure 3 A structural diagram of a part of the fixing device for the telescopic bladder sleeve of the external floating roof.
[0016] Figure 4 This is an assembly drawing of the adapter and sealing strip.
[0017] Base 1, adapter 2, upright plate 2a, lower mounting plate 2b, upper mounting plate 2c, first screw 2d, connecting rod body 2e, nut 2f, first through hole 2g, second through hole 2h, second screw 2i, sealing strip 3, cover 4, cover body 4a, first flange 4b, second flange 4c, cylinder 5, cylinder flap 5a, first fastener 5b, connecting plate 6, breather valve 7. Detailed Implementation
[0018] like Figures 1 to 4As shown, the fixing device for the telescopic bladder sleeve of the external floating roof of this utility model includes a base 1, an adapter 2, a sealing strip 3, a cover 4, a cylinder 5 for connecting the telescopic bladder sleeve A, and a connecting plate 6. The base 1 is the original part on the external floating roof where the telescopic bladder sleeve A is installed. Therefore, the adapter 2, sealing strip 3, cover 4, cylinder 5, and connecting plate 6 in this utility model are parts added to the original base 1.
[0019] The adapter 2 is fixed to the base 1, and the sealing strip 3 is clamped between the adapter 2 and the base 1. In this utility model, the adapter 2 includes multiple adapter components, which are connected end to end to form a frame. Each adapter component includes a vertical plate 2a, a lower mounting plate 2b, an upper mounting plate 2c, a connecting rod, and a first screw 2d. The lower mounting plate 2b is fixed to one end of the vertical plate 2a and is located below the base 1. The sealing strip 3 is clamped between the lower mounting plate 2b and the base 1. The upper mounting plate 2c is fixed to the vertical plate 2a. The other end is fixed, and the lower mounting plate 2b and the vertical plate 2a form a 90° angle, and the upper mounting plate 2c and the vertical plate 2a form a 90° angle. Therefore, the upper mounting plate 2c is parallel to the lower mounting plate 2b. One end of the cover 4 is fixed to the upper mounting plate 2c. The upper mounting plate 2c is provided with a second through hole 2h and a second nut. The second nut cooperates with the second through hole 2h. The second screw 2i passes through the cover 4 and the second through hole 2h and is threaded to the second nut to fix the cover 4 to the upper mounting plate 2c.
[0020] One end of the connecting rod is fixed to the upper mounting plate 2c or the upright plate 2a. The first screw 2d passes through the connecting rod and, after being threadedly connected to the connecting rod, abuts against the base 1. In this invention, the connecting rod includes a connecting rod body 2e and a first nut 2f. The connecting rod body 2e is provided with a first through hole 2g. The first nut 2f is fixed to the connecting rod body 2e and engages with the first through hole 2g. The first screw 2d passes through the first through hole 2g and is threadedly connected to the first nut 2f. Since the first screw 2d is also connected to the base 1, the connecting rod body 2e is supported. In this invention, when the first screw 2d abuts against the base 1, rotating the first screw 2d causes the adapter 2 to move upward as a whole, thereby clamping the sealing strip 3 between the lower mounting plate 2b and the base 1.
[0021] One end of the cover 4 mates with and is fixed to the adapter 2. The cover 4 includes multiple covers 4a. A first flange 4b is fixed to the lower end of each cover 4a. The first flange 4b is fixed to the adapter 2. A second screw 2i passes through the first flange 4b and the second through hole 2h and is threaded to a second nut, thereby fixing the cover 4 to the upper mounting plate 2c. A second flange 4c is provided on the side of each cover 4a. The second flanges 4c of two adjacent covers 4a are fixed together. The second flanges 4c of two adjacent covers 4a are preferably fixed together with screws and nuts.
[0022] The other end of the cylindrical body 5 is fixed to the cover 4, and the connecting plate 6 is fixed to the cylindrical body 5. The cylindrical body 5 includes multiple arc-shaped cylindrical segments 5a and a first fastener 5b. These cylindrical segments 5a close together to form a circular cylindrical body 5. One end of the cylindrical segment 5a is fixed to the cover 4a, and the other end of the cylindrical segment 5a is a free end. The connecting plate 6 is located inside the cylindrical segment 5a. The first fastener 5b passes through the cylindrical segment 5a and the connecting plate 6 for fixation. The telescopic bladder sleeve A is fitted onto the cylindrical body 5. The first fastener 5b consists of a screw and a nut. The screw in the first fastener 5b passes through the telescopic bladder sleeve A, the cylindrical segment 5a, and the connecting plate 6 and is then connected to the nut, fixing the cylindrical body 5, the telescopic bladder sleeve A, and the connecting plate 6 into a single unit.
[0023] This utility model also includes a breather valve 7, which is connected to the housing 4. The breather valve 7 keeps the pressure inside the housing 4 balanced. In this utility model, the breather valve 7 is preferably a flame-arresting breather valve.
[0024] In this utility model, the sealing strip 3 is pressed onto the base 1 by the adapter 2, the cover 4 is fixed to the adapter 2, and the cylinder 5 is fixed to the cover 4. In this way, a receiving space is formed between the adapter 2, the base 1, the cover 4 and the cylinder 5. The telescopic bladder A is put on the cylinder 5 and fixed to the cylinder 5 and the connecting plate 6. When oil and gas enter the receiving space, the oil and gas diffuse from the receiving space into the telescopic bladder A, and finally the oil and gas are stored in the telescopic bladder A. This utility model utilizes the existing base 1 on the external floating roof. By adding an adapter 2, sealing strip 3, cover 4, cylinder 5, and connecting plate 6 to the base 1, it solves the problem of the base 1 being unable to seal after installing the telescopic bladder sleeve A due to corrosion. This utility model can be installed without cutting off the original base 1 and does not require any machining of the base 1 (e.g., no holes need to be drilled on the base 1). This avoids the safety risks caused by machining the base 1. The adapter 2 is fastened to the base 1 as a whole with screws, and the cover 4 is fixed to the adapter 2 with screws. The structure of these parts is simple. Compared with cutting the base 1 and re-welding the base 1, it saves costs and shortens the construction cycle.
Claims
1. A fixing device for a telescopic bladder sleeve for an external floating roof, comprising a base (1), characterized in that, The adapter (2), sealing strip (3), cover (4), cylinder (5) for connecting the telescopic bladder sleeve, and connecting plate (6) are provided. The adapter (2) is fixed to the base (1). The sealing strip (3) is clamped between the adapter (2) and the base (1). One end of the cover (4) is fitted with the adapter (2) and fixed to the adapter (2). The cylinder (5) is fixed to the other end of the cover (4). The connecting plate (6) is fixed to the cylinder (5).
2. The fixing device for the telescopic bladder sleeve of the external floating roof according to claim 1, characterized in that, The adapter (2) includes multiple adapter components, which are connected end to end to form a frame. Each adapter component includes a vertical plate (2a), a lower mounting plate (2b), an upper mounting plate (2c), a connecting rod, and a first screw (2d). The lower mounting plate (2b) is fixed to one end of the vertical plate (2a). The lower mounting plate (2b) is located below the base (1). The sealing strip (3) is clamped between the lower mounting plate (2b) and the base (1). The upper mounting plate (2c) is fixed to the other end of the vertical plate (2a). One end of the cover (4) is fixed to the upper mounting plate (2c). One end of the connecting rod is fixed to the upper mounting plate (2c) or the vertical plate (2a). The first screw (2d) passes through the connecting rod and is threadedly connected to the connecting rod before abutting against the base (1).
3. The fixing device for the telescopic bladder sleeve of the external floating roof according to claim 2, characterized in that, The connecting rod includes a connecting rod body (2e) and a first nut (2f). The connecting rod body (2e) is provided with a first through hole (2g). The first nut (2f) is fixed to the connecting rod body (2e) and the first nut (2f) cooperates with the first through hole (2g).
4. The fixing device for the telescopic bladder sleeve of the external floating roof according to claim 1, characterized in that, The cover (4) includes multiple covers (4a). The lower end of the cover (4a) is fixed with a first flange (4b). The first flange (4b) is fixed with the adapter (2). The side of the cover (4a) is provided with a second flange (4c). The second flanges (4c) of two adjacent covers (4a) are fixed.
5. The fixing device for the telescopic bladder sleeve of the external floating roof according to claim 1, characterized in that, The cylinder (5) includes multiple arc-shaped cylinder segments (5a) and a first fastener (5b). When these cylinder segments (5a) are closed, they form a circular cylinder (5). The connecting plate (6) is located inside the cylinder segments (5a), and the first fastener (5b) passes through the cylinder segments (5a) and the connecting plate (6).
6. The fixing device for the telescopic bladder sleeve for an external floating roof according to any one of claims 1 to 5, characterized in that, It also includes a breathing valve (7), which is connected to the housing (4).