A dispersed multi-power full-contact floating disc device for storage tank

Abstract

A kind of electric direct drive type full inner floating disc device for storage tank, including linear motion device, floating disc device, locking device three major parts.Linear motion device is located above floating disc device, and the two are connected together by bolt.Linear motor group is used to realize active control to floating disc lifting.Floating disc device is above locking device, when the weight of oil in storage tank changes, gravity sensor sends signal to control center immediately, and then floating disc device is tightly attached to oil surface under the drive of linear motion device, to avoid its swing and prevent outside air from contacting oil, when oil surface no longer rises or falls, locking device is locked to prevent floating disc from swinging, so high-precision positioning and fixing of floating disc are realized.Using the application to store oil can effectively reduce the volatilization of oil, and improve the efficiency of oil in and out, using electric direct drive and dispersed multi-power idea can control the up and down movement of floating disc with high precision to ensure that it is tightly attached to oil surface to avoid the swing of floating disc device and other problems.

Description

Technical Field

[0001] This invention relates to the field of internal floating roof technology, specifically to a distributed multi-powered fully connected internal floating roof device for storage tanks. Background Technology

[0002] Floating roof systems are widely used in oil storage, effectively reducing evaporation losses of oil and gas in storage tanks. The floating roof is placed inside the tank and floats on the surface of the oil. When the oil level rises and falls due to filling and emptying, the floating roof remains attached to the oil surface, ensuring that the oil never comes into contact with air and poses a hazard. Furthermore, in the event of a fire or a severe impact to the tank, the floating roof can isolate flames and maintain oil level stability, protecting the stored oil. Currently, the most widely used type globally is the self-floating, modular internal floating roof. This type features modular components, facilitating manufacturing, transportation, and assembly. Most floating roofs now employ a honeycomb structure internally, reducing weight while increasing strength and buoyancy. For these reasons, internal floating roofs are widely used in the storage of volatile liquids such as petroleum.

[0003] With the further development of my country's oil and gas industry, oil storage has received increasing attention, and the demand for floating roof devices in my country has also risen sharply. At present, the floating roof devices used in my country are mostly self-floating floating roofs. Although this technology is relatively mature, in actual applications, the floating roofs still tend to tilt when the oil sloshes or the oil level rises and falls. Furthermore, the floating roofs need to be raised and lowered by the action of the oil, and they still have shortcomings in terms of positioning accuracy, sealing, and reliability. They are basically unable to achieve real-time computer monitoring and timely adjustment of the floating roofs. Therefore, a device is needed to solve the above problems and enable floating roofs for storage tanks to have better performance. Summary of the Invention

[0004] To overcome the aforementioned existing technical problems, the purpose of this invention is to provide a distributed multi-powered fully connected internal floating roof device for storage tanks, which can effectively improve the control of the floating roof and enhance reliability.

[0005] The technical solution adopted by this invention to solve the above problems is as follows: a distributed multi-power fully connected internal floating roof device for storage tanks, comprising three main parts: a linear motion device I, a floating roof device II, and a locking device III. The linear motion device I is fixed above the floating roof device II by bolts. Active control of the raising and lowering of the floating roof device II can be achieved by controlling the linear motion device I. The locking device III is located above the floating roof device II. When the floating roof device II reaches the desired position under the drive of the linear motion device I, the locking device III is activated to lock the floating roof 9 and the irregularly shaped linear motor shaft 7, thereby achieving high-precision positioning and fixation of the floating roof 9.

[0006] The linear motion device I includes three linear motor stators 1, which are uniformly fixed circumferentially to a motor bracket 3 by first bolts 2. The motor bracket 3 is connected and fixed to the inner wall boss 5 of the storage tank 4 by second bolts 6. A non-circularly shaped linear motor shaft 7 is installed inside each linear motor stator 1. The non-circularly shaped linear motor shaft 7 is connected to the floating disc 9 by a third bolt 8. By controlling the three non-circularly shaped linear motor shafts 7 of the linear motion device I, the up-and-down movement of the floating disc 9 can be actively controlled. Furthermore, the use of distributed multi-power design effectively reduces motor load and improves accuracy.

[0007] The floating roof device II includes a floating roof 9, which is directly connected to the rotating shaft 7 of a non-linear motor via a third bolt 8. To prevent oil evaporation, a sealing ring 10 is installed on the side of the floating roof 9, which is in direct contact with the inner wall of the storage tank.

[0008] The locking device III includes a concave plate 11, inside which a cam 12 is installed, and the concave plate 11 is fixed to the floating plate 9. The concave plate 11 has three channels spaced 120° apart circumferentially, and each channel contains a clamping plate 13. The clamping plate 13 is fixedly connected to the crossbeam 20 between the three channels of the concave plate 11 via a return spring 14. The output shaft of the drive motor 15 is fixedly connected to the cam 12, and the drive motor 15 is fixedly mounted on a motor bracket 16, which is fixedly connected to the linear motor drive shaft 7.

[0009] Compared with the prior art, the present invention provides a distributed multi-powered fully connected internal floating roof device for storage tanks, which has the following advantages:

[0010] (1) Compared with the traditional floating roof of storage tanks which can only rise and fall with the rise and fall of the oil surface, the present invention uses three linear motors directly connected to the floating roof, which can realize rapid response in emergency situations and drive the floating roof to a predetermined position, making the movement of the floating roof more controllable.

[0011] (2) The present invention adopts a servo electric direct drive method, which can precisely control the floating plate, so that the floating plate is tightly attached to the oil surface and prevents shaking. When filling the storage tank with oil through the oil inlet, the linear motor actively controls the floating plate to move upward to create a vacuum, which is beneficial to improve the oil filling efficiency. Similarly, when discharging oil through the oil outlet, the linear motor can control the floating plate to move downward to apply pressure to the oil surface and improve the oil discharge efficiency.

[0012] (3) The present invention introduces the idea of ​​distributed multi-power, using three linear motors directly connected to the floating table, which can effectively reduce the motor load and make the control more flexible, making the process of the motor driving the floating table move more smoothly.

[0013] (4) The present invention uses a cam mechanism to design a special internal locking mechanism in the pipeline, which can lock in time when the linear motion mechanism reaches the required position, and can ensure the stability of the floating plate and reduce the loss of oil evaporation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the main motion device of the present invention;

[0016] Figure 3 This is a schematic diagram of the stator mounting structure of a linear motor;

[0017] Figure 4 This is a schematic diagram showing the connection between the rotating shaft of the irregularly shaped linear motor and the floating disk device II;

[0018] Figure 5 This is a schematic diagram of the locking device III. Detailed Implementation

[0019] A distributed multi-power fully connected internal floating roof device for storage tanks includes three main parts: a linear motion device I, a floating roof device II, and a locking device III. The linear motion device I is bolted to the top of the floating roof device II. Controlling the linear motion device I allows for active control of the raising and lowering of the floating roof device II. The locking device III is located above the floating roof device II. When the floating roof device II reaches the desired position under the drive of the linear motion device I, the locking device III is activated to lock the floating roof and the linear motor shaft, thereby achieving high-precision positioning and fixation of the floating roof.

[0020] Reference Figure 1 , Figure 2 , Figure 3 The linear motion device I includes three linear motor stators 1, which are uniformly fixed circumferentially to a motor bracket 3 by first bolts 2. The motor bracket 3 is connected and fixed to the inner wall protrusion 5 of the storage tank 4 by second bolts 6. A non-circularly shaped linear motor shaft 7 is installed inside the linear motor stator 1, and the non-circularly shaped linear motor shaft 7 is connected to the floating plate 9 by a third bolt 8. By controlling the three non-circularly shaped linear motor shafts 7 of the linear motion device I, the up-and-down movement of the floating plate 9 can be actively controlled. The use of distributed multi-power design effectively reduces motor load and improves accuracy. Furthermore, during operation, the arrangement of the three motors provides better stability and ensures the safety of the mechanism. If one motor fails, the remaining motors can still drive the floating plate to the desired position.

[0021] Reference Figure 4The floating roof device II includes a floating roof 9, which is directly connected to the rotating shaft 7 of a non-linear motor via a third bolt 8. To prevent oil evaporation, a sealing ring 10 is installed on the side of the floating roof 9, which is in direct contact with the inner wall of the storage tank.

[0022] Reference Figure 5 The locking device III includes a concave plate 11, inside which a cam 12 is installed, and the concave plate 11 is fixed to the floating plate 9. The concave plate 11 has three channels spaced 120° apart circumferentially, and each channel contains a clamping plate 13. The clamping plate 13 is fixedly connected to the crossbeam 20 between the three channels of the concave plate 11 via a return spring 14. The output shaft of the drive motor 15 is fixedly connected to the cam 12, and the drive motor 15 is fixedly mounted on a motor bracket 16, which is fixedly connected to the linear motor drive shaft 7.

[0023] The overall working principle of this invention is as follows: When oil is filled into the storage tank through the bottom oil inlet 18, the gravity sensor 19 at the bottom of the storage tank detects a change in the weight of the oil and sends a wireless signal to the control center. The motor 15 rotates forward, releasing the locking device II and regulating the linear motion device I to move the float 9 upward, increasing the oil filling efficiency while ensuring that the float 9 is tightly attached to the oil surface to prevent it from swaying. When oil filling stops, the gravity sensor 19 detects that the change in gravity has stopped and sends a signal to the control center again. The linear motion device I stops, and the motor 15 reverses to drive the cam 12 to push out the clamping plate 13 and tightly attach it to the inner wall of the storage tank 4 to achieve locking and prevent the float from swaying. Similarly, when oil is discharged from the storage tank 4 through the oil outlet 17, the locking device II releases the clamping plate 13, and the float 9 moves downward under the drive of the linear motion device I, tightly attaching to the oil surface while applying pressure to the oil surface to increase the pressure at the oil outlet and improve the oil discharge efficiency.

[0024] The working principle of the locking device in this invention is as follows: The motor 15 starts, driving the cam 12 to rotate in the forward direction, thereby pushing the clamping plate 13 out of the channel of the concave plate 11 and contacting and pressing it against the inner wall of the storage tank 4, thus locking the position of the floating device II. When the linear motion device I needs to move again, the motor 15 starts first, driving the cam 12 to rotate in the opposite direction, thereby releasing the clamping plate 13. Under the action of the return spring 14, the clamping plate 13 is pulled back, releasing its locking effect on the inner wall of the storage tank 4.

Claims

1. A distributed multi-power fully connected internal floating roof device for storage tanks, comprising three main parts: a linear motion device I, a floating roof device II, and a locking device III. The linear motion device I is bolted to the top of the floating roof device II. Active control of the lifting and lowering of the floating roof device II is achieved by controlling the linear motion device I. The locking device III is located above the floating roof device II. The floating roof device II includes a floating roof (9). The linear motion device I includes three linear motor stators (1). The three linear motor stators (1) are uniformly fixed circumferentially to a motor bracket (3) by a first bolt (2). The motor bracket (3) is fixed by a first bolt (2). Two bolts (6) are connected and fixed to the inner wall boss (5) of the storage tank (4); the stator (1) of the linear motor is equipped with a non-circular linear motor shaft (7), which is connected to the floating plate (9) by a third bolt (8). The three non-circular linear motor shafts (7) of the linear motion device I are controlled to actively control the up and down movement of the floating plate (9). When the floating plate device II reaches the required position under the drive of the linear motion device I, the locking device III is activated to lock the floating plate (9) and the non-circular linear motor shaft, thereby realizing the high-precision positioning and fixing of the floating plate. The locking device III includes a concave plate (11), a cam (12) is installed inside the concave plate (11), and the concave plate (11) is fixed on the floating plate (9); the concave plate (11) has three channels distributed at 120° intervals around its circumference, and a clamping plate (13) is installed in each channel. The clamping plate (13) is fixedly connected to the crossbeam (20) in the middle of the three channels of the concave plate (11) by a return spring (14); the output shaft of the drive motor (15) is fixedly connected to the cam (12), the drive motor (15) is fixedly installed on the motor bracket (16), and the motor bracket (16) is fixedly connected to the moving shaft (7) of the irregular linear motor.

2. The distributed multi-powered fully connected internal floating roof device for storage tanks according to claim 1, characterized in that: The floating roof (9) is directly connected to the rotating shaft (7) of the irregular linear motor via the third bolt (8); in order to prevent oil evaporation, a sealing ring (10) is installed on the side of the floating roof (9), and the sealing ring (10) is in direct contact with the inner wall of the storage tank.

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