Novel storage tank feeding distributor

Abstract

The utility model discloses a novel storage tank feed distributor which comprises a storage tank feed pipe, an equal-diameter perforated pipe is connected to a pipe orifice, located in a storage tank, of the storage tank feed pipe, liquid outlet hole structures are arranged on the inclined lower portions of the two sides of the equal-diameter perforated pipe, one port of the equal-diameter perforated pipe is connected with the storage tank feed pipe through a flange assembly, and the other port of the equal-diameter perforated pipe is connected with the storage tank feed pipe. And the other port of the equal-diameter perforated pipe is sealed by a flange cover assembly, and the equal-diameter perforated pipe is supported by a pipe frame. Compared with an existing storage tank feeding pipe opening connected with a diffusion pipe, the storage tank feeding pipe has the advantages that the pipe opening, located in the storage tank, of the storage tank feeding pipe is connected with the equal-diameter perforated pipe with the closed tail end, and the liquid outlet hole structures are arranged on the inclined lower portions of the two sides of the equal-diameter perforated pipe, so that impact of concentrated feeding on a tank body, a floating roof and other accessories in the tank can be reduced, the feeding speed is effectively reduced, and the service life of the storage tank is prolonged. Static accumulation is prevented, stable lifting of the floating roof is facilitated, and the accident that a pipeline purging ball enters the tank by mistake is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid petrochemical product storage tank feeding systems, and in particular relates to a novel storage tank feeding distributor. Background Art

[0002] Large storage tanks are important facilities for the storage and transportation of liquids such as petroleum and petrochemical products. In order to prevent static electricity accumulation, reduce the impact of feed on the floating roof or other tank accessories, and ensure the safe operation of the storage tank, reasonable devices should be used to reduce the feed speed and disperse the feed flow, especially for storage tanks with assembled internal floating roofs, the feed speed should not be greater than 1m / s.

[0003] There are two types of tank feeding that are widely used at present: (1) The inner end of the tank feed pipe adopts a downward curved structure, and the feed liquid impacts the bottom plate. The feed speed is fast and the feed is concentrated near the tank wall, which can easily cause safety hazards such as static electricity accumulation and tilting of the floating roof; (2) The inner end of the tank feed pipe is connected to a diffuser with a certain length and a side wall opening and an open end, which can reduce the feed speed and keep the feed position at a certain distance from the tank wall. However, since the end of the diffuser is open, the feed is mainly concentrated at the outlet of the diffuser, causing impact on the floating roof support, heating coil and other tank accessories. During use, there was also an accident in which the pipeline purge ball entered the tank through the expansion pipe, causing the internal floating roof to be broken. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new type of tank feed distributor, which can reduce the impact of concentrated feeding on the tank body, floating roof and other accessories in the tank, effectively reduce the feeding speed, prevent static electricity accumulation, facilitate the smooth lifting and lowering of the floating roof, and prevent the accident of pipeline purge balls accidentally entering the tank.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A novel tank feed distributor comprises a tank feed pipe, wherein the pipe mouth of the tank feed pipe located in the tank is connected to an equal-diameter porous tube, liquid outlet hole structures are arranged obliquely below both sides of the equal-diameter porous tube, one end of the equal-diameter porous tube is connected to the tank feed pipe through a flange assembly, and the other end is closed by a flange cover assembly, and the equal-diameter porous tube is supported by a pipe rack.

[0007] Furthermore, the liquid outlet hole structure includes a plurality of liquid outlet holes 1 and a plurality of liquid outlet holes 2, wherein the liquid outlet hole 1 is located on 1 / 2 of the length of the equal-diameter porous tube close to the pipe mouth of the storage tank feed pipe, and the liquid outlet hole 2 is located on 1 / 2 of the length of the equal-diameter porous tube away from the pipe mouth of the storage tank feed pipe, and the diameter of the liquid outlet hole 2 is larger than the diameter of the liquid outlet hole 1.

[0008] Furthermore, the total area of ​​the liquid outlet hole 1 and the liquid outlet hole 2 is 3 to 5 times the cross-sectional area of ​​the equal-diameter porous tube; the area of ​​the liquid outlet hole 1 is 0.3 to 0.4 times the total area of ​​the liquid outlet hole 1 and the liquid outlet hole 2; the area of ​​the liquid outlet hole 2 is 0.6 to 0.7 times the total area of ​​the liquid outlet hole 1 and the liquid outlet hole 2.

[0009] Furthermore, the line connecting the center of the outlet hole 1 and the outlet hole 2 to the center of the cross section of the equal-diameter porous tube forms an angle of 45 degrees with the vertical center line; the spacing between the outlet hole 1 and the outlet hole 2 along the length direction of the equal-diameter porous tube is equal.

[0010] Furthermore, the diameter of the equal-diameter porous tube is the same as the diameter of the tank feed pipe, and the length of the equal-diameter porous tube is 0.65 to 0.75 times the diameter of the tank.

[0011] Furthermore, leakage holes are provided at intervals of 2m to 3m at the bottom of the equal-diameter porous tube; and an exhaust hole is provided at the top of one end of the equal-diameter porous tube away from the tank feed pipe.

[0012] Furthermore, the pipe rack is composed of a plurality of pipe rack units, each pipe rack unit includes a pair of columns, and the upper and lower parts of the two columns are respectively provided with a top cross beam and a bottom cross beam, the top cross beam is connected to the column by means of pipe rack bolts and pipe rack nuts, the bottom cross beam is fixedly connected to the column, the column is fixedly connected to the bottom plate of the storage tank, and a pad is provided between the column and the bottom plate.

[0013] Furthermore, the upper surface of the bottom cross beam contacts the bottom of the equal-diameter porous tube, and the top cross beam is located above the equal-diameter porous tube with a gap between the top cross beam and the top of the equal-diameter porous tube.

[0014] Furthermore, one end of the equal-diameter porous tube is connected to the tank feed pipe by using a flange, a gasket, a flange bolt and a flange nut, and the other end is closed by using a flange, a flange cover, a gasket, a flange bolt and a flange nut.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1) Compared with the existing storage tank feed pipe mouth connected to the diffusion pipe, the utility model storage tank feed pipe located in the storage tank is connected to the end of the closed equal-diameter porous pipe, and the equal-diameter porous pipe is provided with a liquid outlet structure at the lower side of the two sides, which can reduce the impact of concentrated feeding on the tank body, floating roof and other tank accessories, effectively reduce the feeding speed, prevent static electricity accumulation, facilitate the smooth lifting of the floating roof, and prevent the pipeline purge ball from accidentally entering the tank;

[0017] 2) The storage tank feed distributor of the utility model has a simple structure and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the assembly of the utility model;

[0019] Figure 2 This is a schematic diagram of the locations of the liquid outlet holes of the equal-diameter porous tube of the utility model;

[0020] Figure 3 This is a schematic diagram of a pipe rack of the utility model.

[0021] In the figure: 1. Storage tank feed pipe; 2. Flange; 3. Gasket; 4. Flange bolts; 5. Flange nuts; 6. Equal-diameter porous tube; 6-1. Liquid outlet hole 1; 6-2. Liquid outlet hole 2; 6-3. Leakage hole; 6-4. Vent hole; 7. Pipe rack; 7-1. Column; 7-2. Bottom beam; 7-3. Top beam; 7-4. Pipe rack bolts; 7-5. Pipe rack nuts; 8. Flange cover. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the described scope.

[0023] In order to avoid the impact of concentrated feeding on the tank body, floating roof and other tank accessories, the utility model proposes a new type of tank feed distributor, such as Figure 1 As shown, it includes a tank feed pipe 1, the pipe mouth of the tank feed pipe 1 located in the tank is connected to an equal-diameter porous pipe 6, and liquid outlet holes are arranged obliquely below both sides of the equal-diameter porous pipe 6. One end of the equal-diameter porous pipe 6 is connected to the tank feed pipe 1 through a flange assembly, and the other end is closed by a flange cover assembly. The equal-diameter porous pipe 6 is supported by a pipe rack 7.

[0024] Compared with the existing storage tank feed pipe mouth connected to the diffusion tube, the storage tank feed pipe mouth of the utility model is connected to the equal-diameter porous tube with closed ends, and liquid outlet hole structures are arranged obliquely below both sides of the equal-diameter porous tube. On the one hand, the impact of concentrated feed on the tank body, floating roof and other accessories in the tank can be reduced; on the other hand, the utility model discharges liquid through the liquid outlet hole structure instead of local discharge at the end, which effectively reduces the feed speed, prevents static electricity accumulation, facilitates the smooth lifting and lowering of the floating roof, and prevents the accident of the pipeline purge ball accidentally entering the tank.

[0025] The liquid outlet hole structure includes liquid outlet hole 1 6-1 and liquid outlet hole 2 6-2. Liquid outlet hole 1 6-1 is located on 1 / 2 of the length of the equal-diameter porous tube 6 close to the pipe mouth of the storage tank feed pipe 1, and liquid outlet hole 2 6-2 is located on 1 / 2 of the length of the equal-diameter porous tube 6 away from the pipe mouth of the storage tank feed pipe 1. The diameter of liquid outlet hole 2 6-2 is larger than the diameter of liquid outlet hole 1 6-1.

[0026] Furthermore, the total area of ​​the liquid outlet hole 1 6-1 and the liquid outlet hole 2 6-2 is 3 to 5 times the cross-sectional area of ​​the equal-diameter porous tube 6. The area of ​​the liquid outlet hole 1 6-1 is 0.3 to 0.4 times the total area of ​​the liquid outlet hole 1 6-1 and the liquid outlet hole 2 6-2; the area of ​​the liquid outlet hole 2 6-2 is 0.6 to 0.7 times the total area of ​​the liquid outlet hole 1 6-1 and the liquid outlet hole 2 6-2.

[0027] The utility model distributor has two kinds of liquid outlet holes, and the flow distribution of the liquid outlet holes is more uniform, which avoids concentrated feeding and effectively reduces the feeding speed.

[0028] Please refer to Figure 2 In this embodiment, the line connecting the center of the first and second outlet holes 6-1 and 6-2 to the center of the cross section of the equal-diameter porous tube 6 is at an angle of 45 degrees to the vertical center line. The spacing between the first and second outlet holes 6-1 and 6-2 along the length direction of the equal-diameter porous tube 6 is equal.

[0029] In the present invention, the diameter of the equal-diameter porous tube 6 is the same as the diameter of the storage tank feed pipe 1, and the length of the equal-diameter porous tube 6 is 0.65 to 0.75 times the diameter of the storage tank.

[0030] In order to prevent residual materials in the equal-diameter porous tube 6, leakage holes 6-3 are opened every 2m~3m at the bottom of the equal-diameter porous tube 6 in this example. In order to prevent gas accumulation at the end of the equal-diameter porous tube 6 causing uneven flow distribution of the liquid outlet, a vent hole 6-4 is opened at the top of the end of the equal-diameter porous tube 6 away from the tank feed pipe 1 in this example.

[0031] Please refer to Figure 3 As shown, the pipe rack 7 is composed of a plurality of pipe rack units, each of which includes a pair of columns 7-1. The upper and lower parts of the two columns 7-1 are respectively provided with a top crossbeam 7-3 and a bottom crossbeam 7-2. The top crossbeam 7-3 is connected to the column 7-1 through a pipe rack bolt 7-4 and a pipe rack nut 7-5. The bottom crossbeam 7-2 is fixedly connected to the column 7-1. The column 7-1 is fixedly connected to the bottom plate of the storage tank, and a pad is provided between the column 7-1 and the bottom plate.

[0032] In this embodiment, the double columns 7-1, the bottom cross beam 7-2, and the top cross beam 7-3 are all made of steel sections.

[0033] Furthermore, a circular hole is formed in the top cross beam 7-3 at the position where the pipe rack bolts 7-4 are passed through, and an oblong hole is formed in the vertical direction in the double columns 7-1 at the position where the pipe rack bolts 7-4 are passed through.

[0034] The upper surface of the bottom cross beam 7 - 2 contacts the bottom of the equal-diameter porous tube 6 , and the top cross beam 7 - 3 is located above the equal-diameter porous tube 6 , with a gap between it and the top of the equal-diameter porous tube 6 .

[0035] The equal-diameter porous pipe 6 of the utility model is supported by a bracket, and is easy to install and disassemble.

[0036] One end of the equal-diameter porous tube 6 is connected to the tank feed pipe 1 by using a flange 2, a gasket 3, a flange bolt 4 and a flange nut 5, and the other end is closed by using a flange 2, a flange cover 8, a gasket 3, a flange bolt 4 and a flange nut 5, so that the equal-diameter porous tube 6 is easy to disassemble.

Claims

1. A novel tank feed distributor, comprising a tank feed pipe (1), characterized in that The pipe opening of the storage tank feed pipe (1) located in the storage tank is connected to an equal-diameter porous pipe (6), and liquid outlet holes are provided at obliquely lower sides of the equal-diameter porous pipe (6). One end of the equal-diameter porous pipe (6) is connected to the storage tank feed pipe (1) via a flange assembly, and the other end is closed by a flange cover assembly. The equal-diameter porous pipe (6) is supported by a pipe rack (7).

2. A novel tank feed distributor according to claim 1, characterized in that The liquid outlet hole structure comprises a plurality of liquid outlet holes 1 (6-1) and a plurality of liquid outlet holes 2 (6-2), wherein the liquid outlet holes 1 (6-1) are located on 1 / 2 of the length of the equal-diameter porous tube (6) close to the pipe opening of the storage tank feed pipe (1), and the liquid outlet holes 2 (6-2) are located on 1 / 2 of the length of the equal-diameter porous tube (6) far from the pipe opening of the storage tank feed pipe (1), and the diameter of the liquid outlet holes 2 (6-2) is greater than the diameter of the liquid outlet holes 1 (6-1).

3. A novel tank feed distributor according to claim 2, characterized in that The total area of ​​the liquid outlet hole 1 (6-1) and the liquid outlet hole 2 (6-2) is 3 to 5 times the cross-sectional area of ​​the equal-diameter porous tube (6); the area of ​​the liquid outlet hole 1 (6-1) is 0.3 to 0.4 times the total area of ​​the liquid outlet hole 1 (6-1) and the liquid outlet hole 2 (6-2); the area of ​​the liquid outlet hole 2 (6-2) is 0.6 to 0.7 times the total area of ​​the liquid outlet hole 1 (6-1) and the liquid outlet hole 2 (6-2).

4. A novel tank feed distributor according to claim 3, characterized in that A line connecting the center of the first liquid outlet hole (6-1) and the second liquid outlet hole (6-2) to the center of the cross section of the equal-diameter porous tube (6) forms an angle of 45 degrees with the vertical center line; and the spacing between the first liquid outlet hole (6-1) and the second liquid outlet hole (6-2) along the length direction of the equal-diameter porous tube (6) is equal.

5. A novel tank feed distributor according to claim 1, characterized in that The diameter of the equal-diameter porous tube (6) is the same as the diameter of the storage tank feed pipe (1), and the length of the equal-diameter porous tube (6) is 0.65 to 0.75 times the diameter of the storage tank.

6. A novel tank feed distributor according to claim 1, characterized in that The bottom of the equal-diameter porous tube (6) is provided with leakage holes (6-3) every 2 m to 3 m; and the top of the equal-diameter porous tube (6) at one end away from the storage tank feed pipe (1) is provided with an exhaust hole (6-4).

7. A novel tank feed distributor according to claim 1, characterized in that The pipe rack (7) is composed of a plurality of pipe rack units, each of which comprises a pair of columns (7-1), the upper and lower parts of the two columns (7-1) are respectively provided with a top crossbeam (7-3) and a bottom crossbeam (7-2), the top crossbeam (7-3) and the columns (7-1) are connected via pipe rack bolts (7-4) in conjunction with pipe rack nuts (7-5), the bottom crossbeam (7-2) and the columns (7-1) are fixedly connected, the columns (7-1) are fixedly connected to the bottom plate of the storage tank, and a pad is provided between the columns (7-1) and the bottom plate.

8. A novel tank feed distributor according to claim 7, characterized in that The upper surface of the bottom cross beam (7-2) contacts the bottom of the equal-diameter porous tube (6), and the top cross beam (7-3) is located above the equal-diameter porous tube (6) with a gap between it and the top of the equal-diameter porous tube (6).

9. A novel tank feed distributor according to claim 1, characterized in that One end of the equal-diameter porous tube (6) is connected to the storage tank feed pipe (1) by means of a flange (2), a gasket (3), a flange bolt (4) and a flange nut (5), and the other end is sealed by means of a flange (2), a flange cover (8), a gasket (3), a flange bolt (4) and a flange nut (5).

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