Flexible multi-power liquid-driven full-liquid-contacting inner floating disc device for storage tank

Abstract

The application discloses a flexible multi-power liquid-driven full-liquid-contacting inner floating disc device for a storage tank and relates to the technical field of the floating disc for the storage tank. The device comprises a stainless steel fixed upper plate, a hydraulic cylinder, a stainless steel connecting frame and a flexible skin bag. The hydraulic cylinder is arranged between the stainless steel fixed upper plate and the stainless steel connecting frame to drive the stainless steel connecting frame to move up and down. The lower surface of the stainless steel connecting frame is provided with the flexible skin bag and an elastic large compensation sealing ring. The flexible skin bag is tightly attached to the surface of oil liquid in a manner of air inflation and pressure boosting. The upper surface of the stainless steel connecting frame is provided with a connecting frame pulley assembly, which can make the stainless steel connecting frame more stable when moving up and down. In addition, a gravity sensor is arranged between the storage tank and the foundation and is connected with a computer, so that the height of the oil liquid in the tank is accurately calculated, and the stainless steel connecting frame is controlled to move to a suitable position. The application has the characteristics of high response speed, high control precision and strong running stability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of floating pan for storage tank, and particularly relates to a flexible multi-power liquid-driven full-liquid-contacting internal floating pan device for storage tank. BACKGROUND

[0002] The floating pan is a device covering on the liquid surface and rising and falling with the liquid level in the storage tank by using the buoyancy, which can effectively reduce the volatilization of the volatile liquid in the storage tank, has the effects of reducing energy loss and improving economic benefits, and is widely applied in the petrochemical industry.

[0003] At present, the floating pan mainly used in China is the pontoon type floating pan and the full-liquid-contacting floating pan. For the traditional pontoon type floating pan, the wall thickness of the pontoon is thin, the welding difficulty is great, and the tensile strength and impact resistance are poor. In addition, there is a large space between the pontoon type floating pan and the oil liquid surface, and after the oil gas is mixed, not only the floating pan will be corroded, but also there is a risk of combustion and explosion, the maintenance risk is large, and the safety and reliability are also low. The full-liquid-contacting floating pan has comprehensive technical improvement compared with the pontoon type floating pan, the device has multiple floating units, generally a honeycomb-shaped partition plate is arranged inside, and the oil gas space is eliminated, and has the advantages of large structural strength, stable operation, high safety and the like.

[0004] Although the full-liquid-contacting floating pan has many advantages, there are still some problems in such devices in China at present.

[0005] 1) The floating unit is welded, the welding difficulty is great, the welding quality is difficult to guarantee, and if welding defects occur, the oil liquid will leak;

[0006] 2) The floating pan is guided by the lifting column in the storage tank, and when impacted by the liquid surface, the chuck is easy to be caused, and in severe cases, the floating pan will sink;

[0007] 3) The floating units are only simply spliced and assembled, the mechanical properties are poor, and when impacted, the floating units are easy to crack, the oil liquid is easy to leak, and the floating pan is easy to sink. SUMMARY

[0008] In order to overcome the shortcomings of the prior art, the present application provides a flexible multi-power liquid-driven full-liquid-contacting internal floating pan device for storage tank, which has a longer service life and runs more stably.

[0009] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0010] The utility model provides a kind of flexible multi-power liquid drive type full liquid type inner floating disc device for storage tank, including stainless steel fixed upper plate, hydraulic cylinder, stainless steel connecting frame and flexible skin bag;Stainless steel fixed upper plate is located in the upper portion of storage tank, and becomes a whole by welding with storage tank;The hydraulic cylinder is fixed on the stainless steel fixed upper plate by hydraulic cylinder top fixed bolt group;Hydraulic cylinder bottom is equipped with hydraulic cylinder fixed base, and hydraulic cylinder and hydraulic cylinder fixed base are fixed on the stainless steel connecting frame by hydraulic cylinder bottom fixed bolt group;Stainless steel connecting frame upper surface is fixedly provided with connecting frame pulley assembly, and lower surface is fixedly provided with connecting device, and flexible skin bag and elastic large compensation sealing ring are fixed on the lower surface of stainless steel connecting frame by connecting device;Exhaust valve is arranged on the side wall of storage tank between the stainless steel fixed upper plate and the stainless steel connecting frame;Single-way air inlet valve and single-way exhaust valve are arranged on the side wall of storage tank below flexible skin bag;The bottom side wall of storage tank is provided with oil inlet and oil outlet;The bottom of storage tank is provided with gravity sensor, which is connected with foundation and computer.

[0011] Further, the connecting frame pulley assembly includes an extension rod, a fixed frame, a sliding frame, a spring, a pulley, and a connecting element; the extension rod is fixedly connected to the upper surface of the stainless steel connecting frame by the fixed frame; the sliding frame has a cavity inside; the extension rod and the spring are installed in the cavity; and the pulley is connected to the sliding frame by the connecting element.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By arranging the flexible skin bag and the elastic large compensation sealing ring, the flexible skin bag is inflated by inflating the upper part of the flexible skin bag through the air inlet, so that the flexible skin bag is expanded, the gaps between the stainless steel connecting frame and the side wall of the storage tank are filled, a primary seal is formed, the flexible skin bag is tightly attached to the oil surface inside the storage tank, the oil gas space is eliminated, and the volatilization of the oil is greatly reduced. When the upper part of the flexible skin bag is inflated and pressurized, the elastic large compensation sealing ring can tightly attach to the tank wall under the action of the gas pressure, further eliminate the gap between the floating disc device and the side wall of the storage tank, and form a secondary seal. When the oil in the storage tank needs to be discharged, inflating and pressurizing the upper part of the flexible skin bag can also accelerate the discharge of the oil, and improve the operation efficiency of the storage tank.

[0014] 2. By arranging the connecting frame pulley assembly, the stainless steel connecting frame can stably slide up and down along the side wall of the storage tank through the sliding frame and the spring, the chucking phenomenon of the stainless steel connecting frame is avoided, the pressure on the wall surface of the storage tank is reduced, and the operation stability and reliability of the floating disc device are improved.

[0015] 3. By arranging the hydraulic cylinder, the up-and-down sliding of the stainless steel connecting frame can be controlled through the control mode of four hydraulic drive elements dispersing multi-power, the response speed and control accuracy of the floating disc device can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application;

[0017] Figure 2 is a connection schematic diagram of the stainless steel fixed upper plate, hydraulic cylinder and stainless steel connecting frame in the present application;

[0018] Figure 3 is a structural schematic diagram of the connecting frame pulley assembly in the present application.

[0019] Explanation of the reference numerals in the drawing:

[0020] 1, stainless steel fixed upper plate; 2, hydraulic cylinder; 3, stainless steel connecting frame; 4, flexible bladder; 5, storage tank; 6, hydraulic cylinder top fixing bolt set; 7, hydraulic cylinder fixing base; 8, hydraulic cylinder bottom fixing bolt set; 9, connecting frame pulley assembly; 91, extension rod; 92, fixing frame; 93, sliding frame; 94, spring; 95, pulley; 96, connecting element; 10, connecting device; 11, elastic large compensation sealing ring; 12, air inlet; 13, exhaust valve; 14, one-way air inlet valve; 15, one-way exhaust valve; 16, oil inlet; 17, oil outlet; 18, gravity sensor; 19, foundation; 20, computer. DETAILED DESCRIPTION

[0021] The present application will be described in detail below with reference to the accompanying drawings.

[0022] Referring to Figure 1 and Figure 2 , a flexible multi-power hydraulic drive type full-liquid-contact inner floating disc device for a storage tank includes a stainless steel fixed upper plate 1, a hydraulic cylinder 2, a stainless steel connecting frame 3 and a flexible bladder 4. The stainless steel fixed upper plate 1 is located on the upper part of the storage tank 5 and is integrated with the storage tank 5 by welding. The hydraulic cylinder 2 is fixed to the stainless steel fixed upper plate 1 by a hydraulic cylinder top fixing bolt set 6, and the bottom of the hydraulic cylinder 2 is provided with a hydraulic cylinder fixing base 7. The hydraulic cylinder 2 and the hydraulic cylinder fixing base 7 are fixed to the stainless steel connecting frame 3 by a hydraulic cylinder bottom fixing bolt set 8. The upper surface of the stainless steel connecting frame 3 is provided with a connecting frame pulley assembly 9, which is fixed to the upper surface of the stainless steel connecting frame 3 by welding. The lower surface of the stainless steel connecting frame 3 is provided with a connecting device 10, which fixes the flexible bladder 4 and an elastic large compensation sealing ring 11 to the lower surface of the stainless steel connecting frame 3. An air inlet 12 is provided above the storage tank 5, an exhaust valve 13 is provided on the wall surface of the storage tank 5 between the stainless steel fixed upper plate 1 and the stainless steel connecting frame 3, and a one-way air inlet valve 14 and a one-way exhaust valve 15 are provided on the wall surface of the storage tank 5 below the flexible bladder 4. In addition, an oil inlet 16 and an oil outlet 17 are provided on the side wall of the bottom of the storage tank 5, and a gravity sensor 18 is provided on the bottom of the storage tank 5, which is connected to the foundation 19 and the computer 20.

[0023] Referring toFigure 3 The connecting frame pulley assembly 9 comprises an extension rod 91, a fixed frame 92, a sliding frame 93, a spring 94, a pulley 95 and a connecting element 96.

[0024] The specific working principle of the present application is as follows:

[0025] Referring to Figure 1 When the tank contains a certain height of oil, the gravity sensor 18 transmits the obtained data to the computer 20, and the height of the oil in the tank is accurately calculated, so as to control the hydraulic cylinder 2 to drive the stainless steel connecting frame 3 to slide to the appropriate position in the tank 5, and then the air inlet 12 starts to charge the tank 5 to increase the pressure, so that the elastic compensation sealing ring 11 is tightly attached to the tank wall to form a seal, and the flexible bladder 4 is inflated to tightly attach to the oil surface, eliminating the existence of oil-gas space. In this process, the one-way exhaust valve 15 on the tank wall is opened, so as to discharge the excess gas between the liquid surface and the flexible bladder, and make the flexible bladder 4 better contact with the oil in the tank 5.

[0026] When the oil level in the tank 5 changes, the gravity sensor 18 transmits the real-time data to the computer 20 and accurately calculates the oil level, and then controls the flexible bladder 4 to always maintain good contact with the oil surface.

[0027] The working principle of the connecting frame pulley assembly 9 in the present application is as follows:

[0028] Referring to Figure 3 When the stainless steel connecting frame 3 slides up and down in the tank, even if it has a slight angle of inclination, the sliding frame 93 can slide along the extension rod 91, so as to avoid the chucking phenomenon of the stainless steel connecting frame 3. And under the action of the spring 94, the displacement of the sliding frame 93 is not too large, so as to eliminate the problem of serious inclination of the stainless steel connecting frame 3, so that the stainless steel connecting frame 3 remains stable during lifting.

Claims

1. A flexible multi-powered liquid-driven full-liquid-contacting inner floating pan device for a storage tank, characterized by: The utility model relates to a kind of flexible skin bag and its connecting device, including stainless steel fixed upper plate (1), hydraulic cylinder (2), stainless steel connecting frame (3) and flexible skin bag (4);Stainless steel fixed upper plate (1) is located in the upper portion of storage tank (5), and is integrated by welding with storage tank (5);The hydraulic cylinder (2) is fixed on stainless steel fixed upper plate (1) by hydraulic cylinder top fixing bolt group (6);The bottom of hydraulic cylinder (2) is equipped with hydraulic cylinder fixed base (7), and hydraulic cylinder (2) and hydraulic cylinder fixed base (7) are fixed on stainless steel connecting frame (3) by hydraulic cylinder bottom fixing bolt group (8);Stainless steel connecting frame (3) upper surface is fixedly provided with connecting frame pulley assembly (9), and lower surface is fixedly provided with connecting device (10), and flexible skin bag (4) and elastic big compensation sealing ring (11) are fixed on the lower surface of stainless steel connecting frame (3) by connecting device (10);The sidewall of storage tank (5) between stainless steel fixed upper plate (1) and stainless steel connecting frame (3) is provided with exhaust valve (13);The sidewall of storage tank (5) below flexible skin bag (4) is provided with one-way air inlet valve (14) and one-way exhaust valve (15);The bottom sidewall of storage tank (5) is provided with oil inlet (16) and oil outlet (17);The bottom of storage tank (5) is provided with gravity sensor (18), and it is connected with foundation (19) and computer (20).

2. The flexible multi-powered liquid-driven full-liquid-contacting inner floating disc device for storage tanks as claimed in claim 1, characterized in that: The connecting frame pulley assembly (9) includes extension rod (91), fixed frame (92), sliding frame (93), spring (94), pulley (95) and connecting element (96);Extension rod (91) is fixedly connected on the upper surface of stainless steel connecting frame (3) by fixed frame (92), sliding frame (93) has a recess in the inside, and extension rod (91) and spring (94) are installed in the recess, and pulley (95) is connected on sliding frame (93) by connecting element (96).

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