Electric direct drive type full internal floating roof 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 parts, wherein linear motion device is located above floating disc device, and the two are connected together, and the active control of floating disc lifting is realized by linear motor.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 shaking and prevent external air from contacting oil, when oil surface no longer rises or falls, locking device is locked, to prevent floating disc from shaking, so as to realize high-precision positioning and fixing of floating disc.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 technology can control the up and down movement of floating disc with high precision to ensure that it is tightly attached to oil surface, avoiding the shaking of floating disc device and other problems.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inner floating disc, in particular to an electric direct drive type full-contact inner floating disc device for storage tank. BACKGROUND

[0002] The inner floating disc is widely used in oil storage, which can effectively reduce the evaporation loss of oil gas in the storage tank. The floating disc is generally placed in the storage tank and floats on the surface of the oil product. When the oil level in the tank rises and falls due to charging and discharging, the floating disc can always cover the oil surface, thereby ensuring that the oil product is always in contact with the air to cause danger. At the same time, in the event of fire or severe impact on the storage tank, the inner floating disc can isolate the flame and maintain the stability of the oil surface to form protection. The most widely used at present is the self-floating type assembled inner floating disc, which realizes the modularization of floating disc parts, which is beneficial to manufacturing, transportation and assembly. Secondly, most of the inner floating discs currently use honeycomb structure to reduce weight while improving their strength and buoyancy. Therefore, the inner floating disc is widely used in the storage industry of volatile liquid media such as petroleum.

[0003] With the further development of China's oil and gas industry, oil storage is increasingly valued. At present, self-floating floating discs are widely used in China. Although this technology is relatively mature at present, there are still some problems in the application process. For example, the inner floating disc tilts when the oil liquid shakes or the oil liquid level rises and falls. The floating type floating disc needs to be lifted under the action of oil liquid, and there are still some deficiencies in positioning accuracy, sealing performance and reliability. It is basically impossible to realize real-time monitoring by computer and timely adjustment of the floating disc. Therefore, a device is needed to solve the above problems and make the floating disc for storage tank have better performance. SUMMARY

[0004] In order to overcome the above-mentioned technical problems, the purpose of the present application is to provide an electric direct drive type full-contact inner floating disc device for storage tank, which can effectively improve the control of the floating disc and improve the reliability.

[0005] The technical scheme adopted by the present application to solve the above problems is as follows: an electric direct drive type full-contact inner floating disc device for storage tank, which comprises a linear motion device I, a floating disc device II and a locking device III. The linear motion device I is located above the floating disc device II and connected together, and the linear motion device I realizes the active control of the lifting of the floating disc device II. The locking device III is above the floating disc device II. When the floating disc device II reaches the specified position under the driving of the linear motion device I, the locking device III is locked, thereby realizing high-precision positioning and fixing of the floating disc.

[0006] The linear motion device I includes a linear motor stator 1, the linear motor stator 1 is fixed on the motor support 3 through the first bolt 2, and the motor support 3 is connected and fixed on the inner wall boss 5 of the storage tank 10 through the second bolt 4. The special-shaped linear motor moving shaft 6 is connected on the floating disc 8 through the third bolt 7, and the up and down of the floating disc 8 can be actively controlled through the control of the linear motion device I, so that the oil product oil surface is better stabilized.

[0007] The floating disc device II includes the floating disc 8, the floating disc 8 is located below the special-shaped linear motor moving shaft 6 and is connected with the special-shaped linear motor moving shaft 6 through the third bolt 7. The floating disc 8 is provided with a sealing ring 9 on the side.

[0008] The locking device III includes an outer disc 11, an inner disc 12 is embedded in the outer disc 11, four elbow arms 14 are connected to the outer disc 11 and the inner disc 12, one end hole of the elbow arm 14 is connected with the inner disc 12, a groove on the arm body of the elbow arm 14 is connected with the outer disc 11, and a locking piece 13 is installed at the other end of the elbow arm 14. Inside the locking device III, an inner gear ring 15 is fixed on the inner disc 12 of the locking device III, three motors 16 are installed on the floating disc 8 in the floating disc device II, the motor 16 is connected with a gear 17 to drive the inner gear ring 15 to move, so as to drive the inner disc 12 to rotate, since the outer disc 11 is connected with the elbow arm 14, the elbow arm 14 will be stretched outward along with the rotation of the inner disc 12, so that the locking piece 13 connected with the end portion thereof is gradually attached to the inner wall of the storage tank 10 to achieve the fixing effect.

[0009] Compared with the prior art, the application provides a full-internal floating disc device for a storage tank.

[0010] (1) Compared with the traditional floating disc for the storage tank which can only rise and fall along with the oil surface, the linear motor directly drives the floating disc to achieve rapid response in emergency, drive the floating disc to the predetermined position, and the self-lifting is also beneficial to the maintenance of the floating disc.

[0011] (2) The application adopts the electric direct drive mode, can accurately control the floating disc, and makes the floating disc tightly attached to the oil surface to prevent shaking. When filling oil into the storage tank through the oil inlet, the linear motor actively controls the floating disc to move upward to create a vacuum, which is beneficial to improve the oil injection efficiency. Similarly, when discharging oil through the oil outlet, the linear motor can control the floating disc to move downward to apply pressure to the oil surface to improve the oil discharge efficiency.

[0012] (3) The application provides a special locking device which can lock the mechanism when the linear motor drives the floating disc to the required position, prevents the whole from descending, and the locking device can also effectively reduce the deviation of the floating disc caused by the shaking of the oil surface. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure schematic diagram of the application

[0014] Figure 2 is the main motion device three-dimensional structure schematic diagram of the present application

[0015] Figure 3 is the stator mounting structure schematic diagram of the bar linear motor

[0016] Figure 4 is the connection schematic diagram of the bar linear motor moving shaft and the floating disc device II

[0017] Figure 5 is the structure schematic diagram of the locking device III DETAILED DESCRIPTION

[0018] The application will be further described in detail below with reference to the accompanying drawings.

[0019] Referring to Figure 1 , a tank electric direct drive full internal floating disc device, comprising linear motion device I, floating disc device II, locking device III three parts, wherein the linear motion device I is located above the floating disc device II, and the two are connected together, and the linear motion device I realizes the active control of the floating disc device II lifting. The floating disc device II is above the locking device III, when the floating disc device II reaches the designated position under the driving of the linear motion device I, the locking device III is locked, so as to realize the high-precision positioning and fixing of the floating disc.

[0020] Referring to Figure 1 , Figure 2 , Figure 3 , the linear motion device I comprises a linear motor stator 1, the linear motor stator 1 is fixed on the motor support 3 through the first bolt 2, and the motor support 3 is connected and fixed on the inner wall boss 5 of the storage tank 10 through the second bolt 4. The special-shaped linear motor moving shaft 6 is connected on the floating disc 8 through the third bolt 7, and the up and down of the floating disc 8 can be actively controlled by controlling the linear motion device I to achieve better stability of the oil level of the oil product.

[0021] Referring to Figure 4 , the floating disc device II comprises a floating disc 8, which is located below the special-shaped linear motor moving shaft 6 and connected with the special-shaped linear motor moving shaft 6 through the third bolt 7. The floating disc 8 is provided with a sealing ring 9 on the side surface.

[0022] Referring to Figure 5The locking device III comprises an outer disc 11, an inner disc 12 embedded in the outer disc 11, four elbow arms 14 connected to the outer disc 11 and the inner disc 12, a hole at one end of the elbow arm 14 connected to the inner disc 12, a groove on the arm body of the elbow arm 14 connected to the outer disc 11, and a locking piece 13 installed at the other end of the elbow arm 14. Inside the locking device III, an inner ring gear 15 is fixed to the inner disc 12 of the locking device III. In the floating disc device II, three motors 16 are installed on the floating disc 8, the motors 16 are connected to gears 17 to drive the inner ring gear 15 to move, thereby driving the inner disc 12 to rotate. Since the outer disc 11 is connected to the elbow arm 14, the elbow arm 14 will stretch outward with the rotation of the inner disc 12, thereby making the locking piece 13 connected to the end thereof gradually fit the inner wall of the storage tank 10 to achieve the fixing effect.

[0023] The working principle of the present application is as follows: when filling oil into the storage tank from the oil filling port 19 at the bottom end of the storage tank, the storage tank bottom gravity sensor 20 detects the change of the oil weight and sends a wireless signal to the control center, the control motor 16 is operated to loosen the locking device II, and the linear motion device I drives the floating disc 8 to move upward, thereby increasing the oil filling efficiency and making the floating disc 8 tightly adhere to the oil surface to prevent it from shaking. When stopping oil filling, the gravity sensor 20 detects the change of the gravity and sends a signal to the control center again, the linear motion device I stops, the motor 16 drives the gear 17 in the opposite direction as in the previous step and makes the inner ring gear 15 meshing therewith move, the inner disc 12 in the locking device II moves, the elbow arm 14 moves to push the locking piece 13 out and tightly fit the inner wall of the storage tank 10 to achieve the locking effect and prevent the floating disc from shaking. Similarly, when the storage tank is used for oil discharge, the locking device II loosens the locking piece 13, the floating disc 8 moves downward under the driving of the linear motion device I, tightly adheres to the oil surface and at the same time exerts pressure on the oil surface to increase the pressure of the oil outlet 18 to improve the oil discharge efficiency.

Claims

1. A full inner floating plate device for storage tank, characterized in that: it comprises three parts of linear motion device I, floating plate device II and locking device III, wherein the linear motion device I is located above the floating plate device II and connected together, and the floating plate device II is actively controlled to rise and fall through the linear motion device I; the locking device III is arranged above the floating plate device II, the floating plate device II comprises a floating plate (8), the linear motion device I comprises a linear motor stator (1) and a linear motor moving shaft (6), the linear motor stator (1) is fixed on a motor support (3) through a first bolt (2), the motor support (3) is connected and fixed on an inner wall boss (5) of a storage tank (10) through a second bolt (4); the linear motor moving shaft (6) is connected on the floating plate (8) through a third bolt (7); the floating plate (8) is actively controlled to rise and fall to achieve better stability of oil level through controlling the linear motion device I; When the floating plate device II reaches the specified position under the driving of the linear motion device I, the locking device III is locked, so as to realize high-precision positioning and fixing of the floating plate; The locking device III comprises an outer disc (11), an inner disc (12) embedded in the outer disc (11), four elbow arms (14) connected to the outer disc (11) and the inner disc (12), one end hole of the elbow arm (14) connected to the inner disc (12), a groove on the arm body of the elbow arm (14) connected to the outer disc (11), and a locking piece (13) installed at the other end of the elbow arm (14); an inner ring gear (15) is fixed on the inner disc (12) of the locking device III, three motors (16) are installed on the floating plate (8) in the floating plate device II, the motor (16) is connected with a gear (17) to drive the inner ring gear (15) to move, so as to drive the inner disc (12) to rotate, since the outer disc (11) is connected with the elbow arm (14), the elbow arm (14) will stretch outward with the rotation of the inner disc (12), so that the locking piece (13) connected with the end portion gradually fits the inner wall of the storage tank (10) to achieve the fixing effect.

2. The full inner floating plate device for storage tank according to claim 1, characterized in that: the floating plate (8) is located below the linear motor moving shaft (6) and connected with the special-shaped linear motor moving shaft (6) through the third bolt (7); the sealing ring (9) is installed on the side surface of the floating plate (8). ​ ​

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