Oil inlet diffusion pipe device capable of reducing impact of oil flow on floating disc and floating roof oil storage tank

Abstract

The utility model provides an oil inlet diffusion pipe device and a floating roof oil storage tank, the oil inlet diffusion pipe device can reduce the impact of oil flow on a floating disc, the oil inlet diffusion pipe device comprises an oil inlet pipe, a diffusion pipe and a bent pipe which are fixedly connected in sequence, and two opposite ends of the diffusion pipe are respectively communicated with one end of the oil inlet pipe and one end of the bent pipe. A plurality of oil outlet holes communicated with the diffusion pipe are formed in the bottom of the diffusion pipe at intervals; the elbow pipe is gradually bent and extends downwards from the direction far away from the diffusion pipe, a blind plate is fixed to the free tail end, far away from the diffusion pipe, of the elbow pipe, a plurality of oil drainage holes are formed in the blind plate at intervals, and the oil drainage holes are communicated with the elbow pipe. The bent pipe arranged at the free tail end of the diffusion pipe can guide oil flow to the bottom of the tank so as to prevent the oil flow from directly impacting the floating disc, the blind plate is arranged at the tail end of the bent pipe, the multiple oil drainage holes are formed in the blind plate at intervals and used for dividing and guiding the oil flow, kinetic energy of an oil product can be remarkably reduced, and impact of the oil flow to the floating disc is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil storage tank equipment, in particular to an oil inlet diffusion pipe device and a floating roof oil storage tank capable of reducing the impact of oil flow on a floating plate. Background Art

[0002] Internal floating roof storage tanks are mostly used to store light oil products and are equipped with an oil inlet pipe device inside. The oil inlet pipe device of the existing technology is usually composed of an oil inlet pipe and a diffuser. If there is no diffuser, the oil flow will impact the float when the oil is inlet. The float of the internal floating roof storage tank is usually made of aluminum. The impact of the oil flow on the float when the oil is inlet can easily cause damage to the float, and then the float needs to be replaced. The float of the external floating roof storage tank is usually made of steel. Although it is not easily damaged by impact, the float floats up and down with the fluctuation of the oil flow. If the impact force of the oil flow on the float when the oil is inlet is too large, it can easily cause the float to become stuck due to uneven force. The oil inlet pipe device with a diffuser has a diffuser installed at the end of the oil inlet pipe. These diffusers only have holes on both sides of the lower half of the diffuser. This only reduces the kinetic energy of the oil flow at the end of the diffuser a little bit. The kinetic energy of the oil flow is still relatively large when entering the storage tank, which is very easy to damage the float or cause a stuck phenomenon. For example, Chinese utility model patent publication number CN207090138U discloses a novel oil inlet device comprising a support frame fixed to the tank floor; a diffuser tube fixed to the support frame, the diffuser tube having a plurality of diffusion holes; and an oil inlet pipe connected to the diffuser tube, one end of the oil inlet pipe extending into the diffuser tube and the other end extending outside the tank. While the diffuser tube has holes on both sides to disperse oil during oil inlet operation, the oil flow direction at the end of the tube does not change significantly, making it easy for the oil to impact a float plate, causing damage or even a jam. Damage to the float plate by impact can cause it to lose its original function, allowing light oil to evaporate from the damaged area of the float plate and then diffuse into the atmosphere through the tank vents. If exposed to open flames or lightning, this can cause a fire or explosion. At the same time, the buoyancy of the lower part of the float plate falling to the bottom of the tank will affect the normal collection and delivery of oil products. Replacing the float plate requires a complex process and incurs high costs, seriously affecting the company's safe production and operation. The stuck float plate will cause the float tank to be filled with medium and suspended high, which is prone to safety accidents. Summary of the Invention

[0003] In response to the above-mentioned technical problems, the utility model provides an oil inlet diffuser device for reducing the impact of oil flow on the floating plate of a floating roof oil storage tank.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] An oil inlet diffuser device comprises an oil inlet pipe, a diffuser pipe and a bent pipe fixedly connected in sequence, the opposite ends of the diffuser pipe being respectively connected to one end of the oil inlet pipe and one end of the bent pipe, a plurality of oil outlet holes connected to the diffuser pipe being provided at intervals on the bottom of the diffuser pipe; the bent pipe gradually bends downward and extends away from the diffuser pipe, a blind plate is fixed to the free end of the bent pipe away from the diffuser pipe, a plurality of oil drain holes are provided at intervals on the blind plate, and the oil drain holes are connected to the bent pipe.

[0006] Furthermore, the diffuser is a truncated cone-shaped reducer, and the inner diameter of the diffuser gradually increases in a direction away from the oil inlet pipe.

[0007] Furthermore, the plurality of oil outlet holes are divided into a pair of first tube hole groups and a pair of second tube hole groups, the pair of first tube hole groups are respectively arranged on the circumferential walls on opposite sides of the diffuser; the pair of second tube hole groups are respectively arranged on the circumferential walls on opposite sides of the diffuser and located below the first tube hole groups.

[0008] Furthermore, each of the first tube hole groups includes a plurality of first tube holes, and the plurality of first tube holes are arranged at intervals along the inclined direction of the peripheral wall of the frustum-shaped diffuser tube.

[0009] Furthermore, each of the second tube hole groups includes a plurality of second tube holes, and the plurality of second tube holes are arranged at intervals along the inclined direction of the peripheral wall of the frustum-shaped diffuser tube.

[0010] Furthermore, the angle formed by the line connecting the center of the first tube hole and the center of the diffuser tube with the horizontal plane is 30°, and the angle formed by the line connecting the center of the second tube hole and the center of the diffuser tube with the horizontal plane is 60°.

[0011] Furthermore, the bent pipe is an elbow with a curvature of 60°.

[0012] Furthermore, the oil inlet diffuser pipe device further includes a support, which is connected to one end of the diffuser pipe close to the elbow and is used to support the diffuser pipe.

[0013] Furthermore, the support includes a seat body, a support plate, a pad and a clamp, the support plate is fixed to the bottom of the seat body, the pad is arranged between the support and the diffuser, and the clamp clamps the diffuser to the support.

[0014] The utility model also provides a floating roof oil storage tank comprising the oil inlet diffusion pipe device.

[0015] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0016] 1. The above-mentioned oil inlet diffuser device can remove part of the kinetic energy of the oil flow through the diffuser, so that the kinetic energy of the oil flow is reduced when it reaches the blind plate; the elbow provided at the free end of the diffuser can guide the oil flow to the bottom of the tank to prevent the oil flow from directly impacting the floating plate. A blind plate is provided at the end of the elbow, and a plurality of oil drain holes are provided at intervals on the blind plate. The oil drain holes are used to divert and guide the oil flow, which can significantly reduce the kinetic energy of the oil, further reduce the impact of the oil flow on the floating plate, reduce the degree of damage to the inner floating plate, and prevent the floating plate from getting stuck due to excessive impact force of the oil flow on the floating plate, thereby greatly improving the service life of the floating plate. It can also reduce the impact and friction between the oil flow and the tank wall and bottom, and avoid the generation of a large amount of static electricity.

[0017] 2. The oil inlet diffuser device described above has an oil drain hole at the bottom of the diffuser, which allows the diffuser flow to be diverted when passing through the diffuser, reducing the speed of the oil flow when it reaches the elbow blind plate; in addition, the diffuser is a reducing tube, and its inner diameter gradually increases in the direction away from the oil inlet pipe, which can further reduce the speed of the oil flow when it reaches the elbow blind plate, further reducing the kinetic energy of the oil flow, thereby further reducing the impact of the oil flow on the floating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a floating roof oil storage tank according to a preferred embodiment of the present invention;

[0019] Figure 2 for Figure 1 The structural diagram of the oil inlet diffusion pipe device of the floating roof oil storage tank is shown;

[0020] Figure 3 for Figure 2 The structural schematic diagram of the cross section of the oil inlet diffuser device at the diffuser;

[0021] Figure 4 for Figure 2 A schematic structural diagram of the blind plate of the oil inlet diffuser device shown;

[0022] Figure 5 for Figure 2 The schematic structural diagram of the cross section of the oil inlet diffuser device at the support is shown;

[0023] In the accompanying drawings, 100 is a floating roof oil storage tank; 10 is a tank body; 20 is an oil inlet diffuser device; 21 is an oil inlet pipe; 23 is a diffuser; 230 is an oil outlet hole; 231 is a first pipe hole group; 232 is a first pipe hole; 235 is a second pipe hole group; 236 is a second pipe hole; 25 is a bend; 26 is a blind plate; 261 is an oil drain hole; 27 is a support; 271 is a seat body; 272 is a support plate; 273 is a gasket; 274 is a clamp; 275 is a U-shaped pipe clamp; 276 is a nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] See Figure 1 A preferred embodiment of the present invention provides a floating roof oil storage tank 100, which includes a tank body 10 and an oil inlet diffusion pipe device 20 installed on the tank body 10, and the oil inlet diffusion pipe device 20 is used to supply oil into the tank body 10.

[0028] In this embodiment, the floating roof oil storage tank 100 is an internal floating roof oil storage tank. Figure 2 The oil inlet diffuser assembly 20 includes an oil inlet pipe 21, a diffuser 23, and an elbow 25, which are fixedly connected in sequence. The opposite ends of the diffuser 23 communicate with one end of the oil inlet pipe 21 and one end of the elbow 25, respectively. The oil inlet pipe 21 is connected to the tank body 10. Specifically, the tank body 10 is provided with an installation opening (not shown). The oil inlet pipe 21 is inserted and fixed to the installation opening, so that one end of the oil inlet pipe 21 is located within the tank body 10 and the other end of the oil inlet pipe 21 extends outside the tank body 10. The outer peripheral wall of the oil inlet pipe 21 is in sealing contact with the hole wall of the installation opening to prevent leakage of oil within the tank body 10. In this embodiment, the inner diameter of the oil inlet pipe 21 is approximately 500 mm.

[0029] In this embodiment, the diffuser 23 is a truncated cone-shaped, reducing tube. The inner diameter of the diffuser 23 gradually increases as it moves away from the oil inlet pipe 21. The smaller end of the diffuser 23 is fixedly connected to the end of the oil inlet pipe 21 located within the tank body 10 by welding or other means. The inner diameter of the smaller end of the diffuser 23 is the same as that of the oil inlet pipe 21, approximately 500 mm. The inner diameter of the free end of the diffuser 23 is approximately 700 mm. A rough calculation based on the continuity equation shows that when the inner diameter of the smaller end of the diffuser 23 is approximately 500 mm and the inner diameter of the free end of the diffuser 23 is approximately 700 mm, the flow rate of the oil flowing out of the free end of the diffuser 23 is approximately half the flow rate of the oil entering the diffuser 23.

[0030] The bottom of the diffuser 23 is provided with a plurality of oil outlet holes 230 connected to the diffuser 23. In this embodiment, the plurality of oil outlet holes 230 are divided into a pair of first tube hole groups 231 and a pair of second tube hole groups 235. Figure 3 A pair of first tube hole groups 231 are provided on opposite sides of the circumferential wall of the diffuser 23. Each first tube hole group 231 includes at least one first tube hole 232. In this embodiment, each first tube hole group 231 includes a plurality of first tube holes 232, which are spaced apart along the inclination direction of the circumferential wall of the frustum-shaped diffuser 23. Specifically, the plurality of first tube holes 232 are equally spaced along the inclination direction of the circumferential wall of the frustum-shaped diffuser 23, with the spacing between adjacent first tube holes 232 being approximately 50 mm. The angle α formed by the line a connecting the center of each first tube hole 232 and the center O of the diffuser 23 and the horizontal plane L is 30°. A pair of second tube hole groups 235 are provided on the circumferential wall of the diffuser 23 on opposite sides, below the first tube hole group 231. Each second tube hole group 235 includes at least one second tube hole 236. In this embodiment, each second tube hole group 235 includes a plurality of second tube holes 236 spaced apart along the inclination direction of the circumferential wall of the frustum-shaped diffuser 23. Specifically, the plurality of second tube holes 236 are equally spaced along the inclination direction of the circumferential wall of the frustum-shaped diffuser 23, with the spacing between adjacent second tube holes 236 being approximately 50 mm. The angle β formed by the line b connecting the center of each second tube hole 236 and the center of the diffuser 23 with the horizontal plane L is 60°. In this embodiment, the diameters of the first tube holes 232 and the second tube holes 236 are both 50-100 mm.

[0031] The elbow 25 gradually bends downward from the direction away from the diffuser 23. In this embodiment, the elbow 25 adopts an elbow with a curvature of 60 degrees. One end of the elbow 25 is fixedly connected to the end with a larger diameter of the diffuser 23 by welding or other means. A blind plate 26 is fixed to the free end of the elbow 25 away from the diffuser 23. Please refer to Figure 4, a plurality of oil drain holes 261 are spaced apart on the blind plate 26, and the oil drain holes 261 are communicated with the elbow 25. In this embodiment, the oil drain holes 261 are small holes with an aperture of about 50-100 mm for draining.

[0032] The oil inlet diffuser device 20 further includes a support 27, which is connected to one end of the diffuser 23 near the elbow 25 and is used to support the diffuser 23. Figure 5 In this embodiment, the support 27 includes a seat body 271, a support plate 272, a pad 273 and a clamp 274. The support plate 272 is fixed to the bottom of the seat body 271. The support plate 272 and the bottom of the tank body 10 can be fixedly connected by welding or the like; the pad 273 is arranged between the top of the support 27 and the diffuser 23. In this embodiment, the pad 273 is made of elastic material, such as rubber, for shock absorption to avoid static electricity generated by friction caused by the shaking of the variable diameter diffuser 23; the clamp 274 clamps the diffuser 23 tightly to the support 27. The structure of the clamp 274 belongs to the existing technology. For example, the U-shaped pipe clamp 275 and the nut 276 used in conjunction with the U-shaped pipe clamp 275 in the Chinese utility model patent "A New Oil Inlet Device" with publication number CN207090138U can be used. During installation, a fixing hole (not marked) is provided on the support 27. The two ends of the U-shaped pipe clamp 275 are passed around the top of the diffuser 23 and further passed through the fixing hole. Then, the two ends of the U-shaped pipe clamp 275 are fastened with nuts 276 on the side of the support 27 facing away from the diffuser 23.

[0033] It is understandable that the floating roof oil storage tank 100 may further include other components, such as a floating plate, etc., which belong to the prior art and will not be described here for the sake of space.

[0034] The above-mentioned oil inlet diffuser device 20 can remove part of the kinetic energy of the oil flow through the diffuser 23, so that the kinetic energy of the oil flow is reduced when it reaches the blind plate 26; the elbow 25 provided at the free end of the diffuser 23 can guide the oil flow to the bottom of the tank to prevent the oil flow from directly impacting the floating plate; a blind plate 26 is provided at the end of the elbow 25, and a plurality of oil drain holes 261 are spaced apart on the blind plate 26. The oil drain holes 261 are used to divert and guide the oil flow, which can significantly reduce the kinetic energy of the oil, further reduce the impact of the oil flow on the floating plate, reduce the degree of damage to the inner floating plate, and prevent the floating plate from getting stuck due to excessive impact force of the oil flow on the floating plate, thereby greatly improving the service life of the floating plate, and reducing the impact and friction between the oil flow and the tank wall and bottom, thereby avoiding the generation of a large amount of static electricity.

[0035] The above-mentioned oil inlet diffuser device 20 is provided with an oil drain hole 261 at the bottom of the diffuser 23, so that the oil flow through the diffuser 23 can be diverted when passing through the diffuser 23, reducing the speed of the oil flow when it reaches the elbow blind plate 26. In addition, the diffuser 23 is a reducing tube, and its inner diameter gradually increases in the direction away from the oil inlet pipe 21, which can further reduce the speed of the oil flow when it reaches the elbow blind plate 26, and further reduce the kinetic energy of the oil flow, so that the impact of the oil flow on the floating plate is smaller, thereby reducing the impact and friction between the oil flow and the tank wall and tank bottom, and avoiding the generation of a large amount of static electricity.

[0036] The above-mentioned oil inlet diffuser device 20 is provided with a first tube hole group 231 and a second tube hole group 235 on the bottom of the diffuser 23, wherein the angle formed by the line connecting the hole center of the first tube hole 232 of the first tube hole group 231 and the center of the diffuser 23 and the horizontal plane is 30°, and the angle formed by the line connecting the hole center of the second tube hole 236 of the second tube hole group 235 and the center of the diffuser 23 and the horizontal plane is 60°, which can effectively control the direction of oil flow, thereby further reducing the impact of oil flow on the tank wall and tank bottom.

[0037] It is understandable that the dimensions of the oil inlet pipe 21 , the diffuser pipe 23 and the elbow 25 can be set to other values as needed, and the present invention does not impose any limitation thereto.

[0038] It can be understood that the oil inlet diffuser device 20 can also be used on an external floating roof oil storage tank.

[0039] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit suggested by the present invention should fall within the scope of the patent covered by the present invention.

Claims

1. An oil inlet diffuser device capable of reducing the impact of oil flow on a floating plate, characterized by: It includes an oil inlet pipe, a diffuser pipe and a bend pipe fixedly connected in sequence, the opposite ends of the diffuser pipe are respectively connected to one end of the oil inlet pipe and one end of the bend pipe, and a plurality of oil outlet holes connected to the diffuser pipe are provided at intervals on the bottom of the diffuser pipe; the bend pipe gradually bends downward and extends away from the diffuser pipe, and a blind plate is fixed to the free end of the bend pipe away from the diffuser pipe, and a plurality of oil drain holes are provided at intervals on the blind plate, and the oil drain holes are connected to the bend pipe.

2. The oil inlet diffuser device according to claim 1, characterized in that: The diffuser is a truncated cone-shaped reducer, and the inner diameter of the diffuser gradually increases in a direction away from the oil inlet pipe.

3. The oil inlet diffuser device according to claim 1, characterized in that: The plurality of oil outlet holes are divided into a pair of first tube hole groups and a pair of second tube hole groups. The pair of first tube hole groups are respectively arranged on the peripheral walls on opposite sides of the diffuser tube; the pair of second tube hole groups are respectively arranged on the peripheral walls on opposite sides of the diffuser tube and are located below the first tube hole groups.

4. The oil inlet diffuser device according to claim 3, characterized in that: Each of the first tube hole groups includes a plurality of first tube holes, and the plurality of first tube holes are arranged at intervals along the inclined direction of the peripheral wall of the frustum-shaped diffuser tube.

5. The oil inlet diffuser device according to claim 4, characterized in that: Each of the second tube hole groups includes a plurality of second tube holes, and the plurality of second tube holes are arranged at intervals along the inclined direction of the peripheral wall of the frustum-shaped diffuser tube.

6. The oil inlet diffuser device according to claim 5, characterized in that: The angle formed by the line connecting the center of the first tube hole and the center of the diffuser tube with the horizontal plane is 30°, and the angle formed by the line connecting the center of the second tube hole and the center of the diffuser tube with the horizontal plane is 60°.

7. The oil inlet diffuser device according to claim 1, characterized in that: The elbow is an elbow with a curvature of 60°.

8. The oil inlet diffuser device according to claim 1, characterized in that: The oil inlet diffuser device further includes a support, which is connected to one end of the diffuser close to the elbow and is used to support the diffuser.

9. The oil inlet diffuser device according to claim 8, characterized in that: The support includes a seat body, a support plate, a pad and a clamp. The support plate is fixed to the bottom of the seat body. The pad is arranged between the support and the diffuser. The clamp clamps the diffuser onto the support.

10. A floating roof oil storage tank, characterized by: It comprises the oil inlet diffusion pipe device as described in any one of claims 1-9.

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