A full liquid floating disc seal anti-rotation limiting device

Abstract

The utility model provides a kind of full liquid receiving floating disc sealing anti-rotation limiting device, belong to petrochemical field, including floating disc, the inside of the floating disc is provided with anti-rotation limiting assembly, the side of the anti-rotation limiting assembly is provided with auxiliary assembly, the utility model is provided with anti-rotation limiting assembly, it is realized as the structure of preventing rotation of floating disc, by rigid connection frame that penetrates the inside of floating disc, rotation torque is directly converted into axial tension and is transmitted to the edge of floating disc, forms distributed anchoring force, its internal filler material is while buffering torsional load, ensure the efficient conduction of restraint, from the mechanical root block the rotation tendency of floating disc, by the auxiliary assembly of setting, it is realized that this component constructs friction in the periphery of floating disc: outside corrosion-resistant friction structure is consumed rotary kinetic energy by contact tank wall, realize physical brake;Prevent the rotation risk induced by imbalance or deformation.

Description

Technical Field

[0001] This utility model relates to the petrochemical field, and more specifically, to a fully liquid-contact floating disc sealing anti-rotation limiting device. Background Technology

[0002] Petrochemical floating roofs are key energy-saving and environmentally friendly equipment in petrochemical storage tanks. They are mainly used to cover the surface of the stored liquid and float with the rise and fall of the liquid level to reduce the loss of the medium due to evaporation, reduce the risk of fire and improve safety. They also greatly reduce evaporation loss. They are tightly covered on the liquid surface and almost completely eliminate the gas phase space above the liquid. Volatile organic compounds cannot accumulate and saturate above the liquid, thus greatly inhibiting the evaporation of the liquid.

[0003] Liquid flows in at high speed from nozzles on the side wall of the storage tank, forming tangential flow or vortex, causing the floating roof to rotate. This causes tearing at the edge of the floating roof, and the twisting and tearing of the floating roof seals leads to a large leakage of volatile oil and gas. This not only causes huge product losses, but also causes a high concentration of flammable gas to accumulate inside the tank. When it comes into contact with static sparks or metal friction sparks, it can trigger an explosion and fire. At the same time, the leaked VOCs continue to pollute the environment and produce toxic odors, and the company faces heavy environmental penalties. The rotation can also break floating roof accessories and twist the structure, eventually causing the floating roof to sink and jam, forcing the storage tank to shut down for several weeks for cleaning and maintenance, resulting in a huge waste of manpower and material resources, and posing a large number of safety hazards. Utility Model Content

[0004] The purpose of this invention is to address the current problem where high-speed inflow of liquid from nozzles on the side wall of a storage tank creates tangential flow or vortices, causing the floating roof to rotate and tear at its edges. This leads to a large leakage of volatile oil and gas at the floating roof seals due to twisting and tearing, resulting in significant product losses and the accumulation of high concentrations of flammable gases inside the tank. These gases can trigger explosions and fires upon contact with static electricity or metal-to-metal sparks. Furthermore, the leaked VOCs continuously pollute the environment and produce toxic odors, subjecting companies to severe environmental penalties. The rotation can also break floating roof accessories and twist the structure, ultimately causing the floating roof to sink and become stuck, forcing the storage tank to shut down for weeks for cleaning and maintenance, resulting in a significant waste of manpower and resources and posing numerous safety hazards.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] The present invention is as follows: a fully liquid-contact floating disk sealing anti-rotation limiting device, comprising a floating disk, wherein an anti-rotation limiting component is provided inside the floating disk, and an auxiliary component is provided on one side of the anti-rotation limiting component;

[0007] The anti-spin limiting assembly includes a connecting pipe disposed within the floating roof. The two ends of the connecting pipe are respectively welded with mounting heads. Multiple grooves are formed inside the connecting pipe. A steel cable is disposed inside the connecting pipe. The grooves are filled with PTFE filler and are located on the outside of the steel cable.

[0008] As a preferred technical solution of this utility model, a friction ring is provided on the outer side of the auxiliary component, and a plurality of friction teeth are provided on the outer side of the friction ring. One end of the friction teeth is on the same longitudinal plane as the floating disk, and the friction ring and friction teeth are made of high temperature and corrosion resistant plastic.

[0009] As a preferred technical solution of this utility model, the top of the mounting head is riveted with an elastic steel rope for protecting the steel cable connection, and the top end of the elastic steel rope is wrapped around one side of the steel cable connection mounting head.

[0010] As a preferred technical solution of this utility model, a connecting plate that evenly distributes the force is provided on one side of the mounting head, and a connecting plate is provided between each of the two adjacent mounting heads. The connecting plate is made of shape memory metal.

[0011] As a preferred technical solution of this utility model, the bottom of the floating roof is provided with an auxiliary float for assisting the floating roof to suspend. The auxiliary float is located on one side of the steel cable and on one side of the mounting head.

[0012] As a preferred technical solution of this utility model, the top of the floating roof is provided with a cross plate for averaging surface pressure, one end of the cross plate is riveted to the connecting plate, and the cross plate is located on one side of the friction ring.

[0013] As a preferred technical solution of this utility model, two fixing buckles are provided on one side of the top of the steel cable, and an emergency steel cable for emergency use is provided on one side of the two fixing buckles. Both ends of the emergency steel cable are clamped by the fixing buckles.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting anti-rotation limiting components, a structure to prevent the floating roof from rotating is realized. Through the rigid connecting frame that runs through the inside of the floating roof, the rotational torque is directly converted into axial tensile force and transmitted to the edge of the floating roof to form a distributed anchoring force. The internal filling material buffers the torsional load while ensuring the efficient transmission of the constraint force, blocking the rotation tendency of the floating roof from the mechanical root.

[0016] 2. Through the auxiliary components, friction is generated around the floating roof: the corrosion-resistant friction structure on the outside consumes rotational kinetic energy by contacting the tank wall, achieving initial physical braking; at the same time, through comprehensive measures such as balancing buoyancy distribution, dispersing surface pressure and redundant protection, the floating roof's horizontal attitude and sealing fit are maintained, preventing the risk of rotation caused by imbalance or deformation. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the fully liquid-contacting floating disc sealing anti-rotation limiting device provided by this utility model;

[0018] Figure 2 A left-side perspective three-dimensional cross-sectional view of the fully liquid-contacting floating disc sealing anti-rotation limiting device provided by this utility model;

[0019] Figure 3 A schematic diagram of the connecting pipe, mounting head, and groove structure of the fully liquid-contacting floating roof sealing anti-rotation limiting device provided by this utility model;

[0020] Figure 4 A top view of the structure of the fully liquid-contacting floating roof sealing anti-rotation limiting device provided by this utility model;

[0021] Figure 5 This is a bottom view structural diagram of the fully liquid-contact floating disk sealing anti-rotation limiting device provided by this utility model.

[0022] The diagram shows: 1. Floating table; 2. Anti-rotation limiting component; 3. Anti-rotation limiting component; 4. Elastic steel rope; 5. Connecting plate; 6. Auxiliary float; 7. Cross plate; 8. Fixing buckle; 9. Emergency steel cable; 201. Connecting pipe; 202. Mounting head; 203. Groove; 204. Steel cable; 301. Friction ring; 302. Friction teeth. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0024] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] like Figure 1 As shown, this embodiment proposes a fully liquid-contact floating disk sealing anti-rotation limiting device, including a floating disk 1, an anti-rotation limiting component 2 is provided inside the floating disk 1, and an auxiliary component 3 is provided on one side of the anti-rotation limiting component.

[0028] The anti-rotation limiting component 2 includes a connecting pipe 201 disposed within the floating roof 1. Mounting heads 202 are welded to both ends of the connecting pipe 201. Multiple grooves 203 are formed inside the connecting pipe 201. A steel cable 204 is disposed inside the connecting pipe 201. The grooves 203 are filled with PTFE filler and are located outside the steel cable 204. The steel cable 204, which penetrates the floating roof 1, provides the core anti-rotation framework. The steel cable 204 is fixed within the connecting pipe 201 by the grooves 203 wrapped with PTFE filler, which both restricts the displacement of the steel cable 204 and buffers torque through the low-friction characteristics of the filler. The mounting heads 202 welded to both ends of the connecting pipe 201 transmit the tensile force to the edge of the floating roof 1, forming a rigid constraint that directly resists the rotational tendency of the floating roof 1.

[0029] like Figure 2 As shown, a friction ring 301 is provided on the outer side of the auxiliary component 3, and multiple friction teeth 302 are provided on the outer side of the friction ring 301. One end of the friction teeth 302 is on the same longitudinal plane as the floating disk 1. The friction ring 301 and the friction teeth 302 are made of high temperature and corrosion resistant plastic. The friction ring 301 and the friction teeth 302 on its surface are in close contact with the inner wall of the storage tank. When the floating disk 1 rotates slightly, the corrosion resistant plastic teeth generate sliding friction resistance with the tank wall. The rotational kinetic energy is converted into heat energy through physical contact, achieving mechanical braking in the initial stage of rotation, while avoiding metal friction sparks.

[0030] like Figure 1 and Figure 5 As shown, the top of the mounting head 202 is riveted with an elastic steel rope 4 to protect the connection of the steel cable 204. The top of the elastic steel rope 4 is wrapped around one side of the steel cable 204 connected to the mounting head 202. The elastic steel rope 4 is riveted at the connection between the mounting head 202 and the steel cable 204. It absorbs the instantaneous vibration or impact load of the steel cable 204 through its own flexible deformation, prevents the steel cable 204 joint from breaking due to stress concentration, and extends the fatigue life of the core limiting structure.

[0031] like Figure 4As shown, a connecting plate 5 for evenly distributing force is provided on one side of the mounting head 202. A connecting plate 5 is provided between each two adjacent mounting heads 202. The connecting plate 5 is made of shape memory metal. The shape memory metal connecting plate 5 connects adjacent mounting heads 202. When the floating disk 1 is deformed by uneven force, the connecting plate 5 uses shape memory characteristics to adaptively adjust the deformation, evenly distributing the local stress to the entire floating disk 1 frame, avoiding structural damage caused by single-point overload.

[0032] like Figure 5 As shown, the bottom of the floating roof 1 is provided with an auxiliary float 6 for assisting the floating roof 1 to suspend. The auxiliary float 6 is located on one side of the steel cable 204 and on one side of the mounting head 202. The auxiliary float 6 is symmetrically arranged on the sides of the steel cable 204 and the mounting head 202. It compensates for the imbalance of the floating roof 1 caused by changes in liquid density or local leakage by providing additional buoyancy, maintains the floating roof 1 in a horizontal state, and reduces the possibility of tilting and rotation.

[0033] like Figure 4 As shown, the top of the floating roof 1 is provided with a cross plate 7 for averaging surface pressure. One end of the cross plate 7 is riveted to the connecting plate 5. The cross plate 7 is located on one side of the friction ring 301. The cross plate 7 and the connecting plate 5 are riveted to form a mesh pressure-bearing structure. When the surface of the floating roof 1 is impacted by liquid fluctuations, the local pressure is distributed to the four corners of the floating roof 1 through the cross arm, suppressing the deformation of the floating roof 1 panel and ensuring the uniform adhesion of the sealing strip to the tank wall.

[0034] like Figure 1 As shown, two fixing buckles 8 are provided on one side of the top of the steel cable 204. An emergency steel cable 9 for emergency use is provided on one side of the two fixing buckles 8. Both ends of the emergency steel cable 9 are clamped by the fixing buckles 8. The emergency steel cable 9 is connected in parallel with the main steel cable 204 through the double fixing buckles 8. When the main steel cable 204 breaks accidentally, the fixing buckles 8 automatically lock, so that the emergency steel cable 9 immediately bears the force, forming a redundant limit protection to prevent the floating table 1 from rotating out of control.

[0035] Specifically, during operation, the fully liquid-contact floating roof sealing anti-rotation limiting device consists of a steel cable 204 skeleton running through the floating roof 1. The steel cable 204 is wrapped with PTFE packing inside the connecting pipe 201, which can prevent a small amount of gas from leaking through the steel cable 204 (see...). Figure 3 While buffering the torque, it transmits the tensile force to the mounting head 202 welded to the edge of the floating roof 1, forming a rigid constraint. The corrosion-resistant friction ring 301 and friction teeth 302 on the outer side of the floating roof 1 are in close contact with the tank wall, consuming rotational kinetic energy through sliding friction and avoiding sparks (see...). Figure 2 The elastic steel cable 4 at the mounting head 202 absorbs the vibration and impact of the steel cable 204, preventing the joint from breaking; while the shape memory metal connecting plate 5 connects adjacent mounting heads 202 (see...). Figure 4The system adaptively distributes local stress to the overall frame, with symmetrically distributed auxiliary floats 6 to compensate for buoyancy imbalances and maintain a horizontal state. The top cross plate 7 is riveted to the connecting plate 5 to form a mesh structure, evenly dispersing liquid fluctuation pressure and ensuring the sealing strip adheres to the tank wall. Finally, the fixing buckle 8 and emergency steel cable 9 are connected in parallel with the main steel cable 204 to immediately provide emergency protection in the event of main cable breakage. All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A fully liquid-contact floating disc sealing anti-rotation limiting device, comprising a floating disc (1), characterized in that, The floating table (1) is provided with an anti-spinning limiting component (2) inside, and an auxiliary component (3) is provided on one side of the anti-spinning limiting component (2); The anti-spin limiting component (2) includes a connecting pipe (201) disposed in the floating plate (1). The two ends of the connecting pipe (201) are respectively welded with mounting heads (202). The connecting pipe (201) has multiple grooves (203) inside. The connecting pipe (201) is provided with steel cables (204) inside. The grooves (203) are filled with PTFE filler. The grooves (203) are located outside the steel cables (204).

2. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, The auxiliary component (3) is provided with a friction ring (301) on its outer side, and a plurality of friction teeth (302) are provided on the outer side of the friction ring (301). One end of the friction teeth (302) is on the same longitudinal plane as the floating disk (1). The friction ring (301) and the friction teeth (302) are made of high temperature and corrosion resistant plastic.

3. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, The top of the mounting head (202) is riveted with an elastic steel rope (4) for protecting the connection of the steel cable (204), and the top end of the elastic steel rope (4) is wrapped around one side of the steel cable (204) connecting the mounting head (202).

4. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, A connecting plate (5) for evenly distributing force is provided on one side of the mounting head (202), and a connecting plate (5) is provided between each two adjacent mounting heads (202). The connecting plate (5) is made of shape memory metal.

5. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, The bottom of the floating roof (1) is provided with an auxiliary float (6) for suspending the floating roof (1). The auxiliary float (6) is located on one side of the steel cable (204) and on one side of the mounting head (202).

6. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, The top of the floating plate (1) is provided with a cross plate (7) for averaging surface pressure. One end of the cross plate (7) is riveted to the connecting plate (5). The cross plate (7) is located on one side of the friction ring (301).

7. The fully liquid-contact floating disk sealing anti-rotation limiting device according to claim 1, characterized in that, Two fixing buckles (8) are provided on one side of the top of the steel cable (204), and an emergency steel cable (9) for emergency use is provided on one side of the two fixing buckles (8). Both ends of the emergency steel cable (9) are clamped by the fixing buckles (8).

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