Atmospheric tank bottom cleaning material device

Abstract

The utility model discloses a kind of normal-pressure storage tank bottom cleaning material devices, comprising: tank bottom plate;Tank wall, the lower end edge of tank wall is opened with the arch-shaped emptying port;Emptying pipe, outer diameter is matched with the radius of arch, the axis of emptying pipe is parallel to the extension direction of tank bottom plate, tank bottom plate separates the pipe wall of emptying pipe into upper pipe wall and lower pipe wall, and make upper pipe wall be inserted in emptying port, the outer wall of upper pipe wall is sealedly connected with the lower end edge of tank wall, the inside of upper pipe wall is communicated with the inside of tank wall, the pipe wall of emptying pipe is sealedly connected with tank bottom plate at intersection;Plugging piece, for plugging the inside of upper pipe wall.This device ingeniously designs the position and shape of emptying port and emptying pipe, can discharge the bottom material inside tank wall, guarantee discharge flow, emptying pipe is connected tank wall and tank bottom plate simultaneously, structure is very stable, and fracture risk is low, when carrying out anticorrosion maintenance operation to emptying pipe periodically, it is not necessary to enter tank wall inside, very convenient and safe.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical storage technology, and in particular to a bottom cleaning device for atmospheric pressure storage tanks. Background Technology

[0002] During the bottom cleaning operation of storage tanks, the bottom material inside the tank is discharged through the drain port. Existing storage tanks generally have a drain port on the bottom plate, with a small, angled drain pipe welded below it. The drain pipe has an outlet at its outer end, which is opened and closed by a removable cover. However, after a period of use, the area around the drain port and the inside of the drain pipe are prone to rusting, and weld seams and steel plate cracks may also occur, requiring regular anti-corrosion maintenance. However, due to its special location, even if operators enter the tank through the manhole, it is difficult to work on the lower surface of the bottom plate around the drain port, making anti-corrosion maintenance very inconvenient and significantly impacting tank safety. Furthermore, the drain pipe is concentrated on the bottom plate, resulting in an unstable installation structure and a risk of breakage due to frequent shaking. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a bottom cleaning device for atmospheric pressure storage tanks that is convenient for corrosion prevention and maintenance and has a stable structure.

[0004] A bottom cleaning device for an atmospheric pressure storage tank according to an embodiment of the present invention includes: a tank bottom plate extending horizontally; a tank wall, cylindrical in shape with its axis extending vertically, the lower end of the tank wall connected to the tank bottom plate, an arc-shaped drain opening provided at the lower edge of the tank wall, the tank bottom plate defining the chord of the arc, and the tank wall defining the arc of the arc; a drain pipe with an outer diameter matching the radius of the arc, the axis of the drain pipe parallel to the extending direction of the tank bottom plate, the tank bottom plate dividing the wall of the drain pipe into an upper wall and a lower wall, and the upper wall being inserted into the drain opening, the outer wall of the upper wall being sealed to the lower edge of the tank wall, the interior of the upper wall being in communication with the interior of the tank wall, the wall of the drain pipe having an clearance opening at a position corresponding to the tank bottom plate, and the wall of the drain pipe being sealed to the tank bottom plate at the intersection; and a sealing member for sealing the interior of the upper wall.

[0005] The device offers at least the following advantages: The ingenious design of the drain port and drain pipe's position and shape places the drain port at the lower edge of the tank wall in an arc shape. The drain pipe's wall is divided into an upper and lower wall by the tank bottom plate, with the upper wall inserted into the drain port. The outer wall of the upper wall is sealed to the lower edge of the tank wall, and the interior of the upper wall communicates with the interior of the tank wall, allowing for the discharge of bottom material from inside the tank. Even if the remaining bottom material's liquid level is very close to the tank bottom plate, the arc-shaped design of the drain port can still ensure... The discharge flow rate is controlled, and the drain pipe has an avoidance opening at the corresponding position of the tank bottom plate. The drain pipe wall and the tank bottom plate are sealed at the intersection, so that the drain pipe connects the tank wall and the tank bottom plate at the same time. The structure is very stable and the risk of breakage is low. When performing anti-corrosion maintenance work on the drain pipe, the operator can carry out the construction work at the connection between the outer wall of the upper pipe and the lower edge of the tank wall and the intersection of the drain pipe wall and the tank bottom plate from the outside of the tank wall. There is no need to enter the inside of the tank wall, which is very convenient and safe.

[0006] According to some embodiments of this utility model, the drain opening is in the shape of an arc.

[0007] According to some embodiments of the present invention, the upper tube wall is inserted through the drain port and extends into the interior of the tank wall.

[0008] According to some embodiments of the present invention, the bottom plate of the tank protrudes outward from the tank wall and extends to 1 / 3 to 2 / 3 of the axial length of the drain pipe.

[0009] According to some embodiments of the present invention, the sealing component includes a baffle and a cover plate. The baffle is in the shape of a minor arc and is sealed to the inner wall of the lower pipe wall and the lower side of the tank bottom plate. The baffle is configured to block the channel between the inner wall of the lower pipe wall and the lower side of the tank bottom plate. The cover plate is detachably connected to the end of the drain pipe away from the tank wall. The cover plate is configured to block the pipe wall at the end of the drain pipe away from the tank wall.

[0010] According to some embodiments of the present invention, a flange is provided circumferentially at one end of the drain tube away from the tank wall, and a plurality of first connecting holes are spaced apart circumferentially on the flange. A plurality of second connecting holes are spaced apart circumferentially on the cover plate, and the cover plate and the drain tube are detachably connected by fasteners.

[0011] According to some embodiments of this utility model, a sealing ring is provided between the cover plate and the drain pipe.

[0012] According to some embodiments of the present invention, the outer wall of the upper pipe is connected to the lower edge of the tank wall by a weld, and the pipe wall of the drain pipe is connected to the bottom plate of the tank by a weld at the intersection.

[0013] According to some embodiments of the present invention, the axis of the draining tube extends radially along the tank wall.

[0014] According to some embodiments of the present invention, a bottom pad is also included. The bottom pad is disposed on the lower side of the tank bottom plate and is used to support the tank bottom plate upward. The bottom pad has an air-avoiding area at the position corresponding to the discharge pipe.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a side view of an embodiment of the present utility model; Figure 2 This is a front view of an embodiment of the present invention with the drain pipe and sealing component concealed. Figure 3 This is a partial front view of the structure of this utility model embodiment after the sealing component is hidden; Figure 4 This is a front view of an embodiment of the present utility model; Figure 5 This is a schematic diagram of a longitudinal section along the axis of the discharge tube in an embodiment of this utility model; Figure 6 This is a side view of the drain tube in an embodiment of this utility model; Figure 7 This is a rear view of the drain tube in an embodiment of this utility model.

[0017] Reference numerals: 1. Tank bottom plate; 2. Tank wall; 3. Drain port; 4. Drain pipe; 41. Upper pipe wall; 42. Lower pipe wall; 43. Clearance port; 44. Flange; 45. First connecting hole; 5. Sealing component; 51. Baffle; 52. Cover plate; 52. Second connecting hole; 521. Bottom pad; 6. Clearance area; 61. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, horizontal, axis, radial, parallel, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Reference Figures 1 to 7 This utility model discloses a bottom cleaning device for atmospheric pressure storage tanks, including a tank bottom plate 1, a tank wall 2, a drain outlet 3, a drain pipe 4, and a sealing component 5.

[0022] Among them, reference Figure 1 The tank bottom plate 1 extends horizontally, and the tank wall 2 is cylindrical with its axis extending vertically. It can be understood that the horizontal direction is perpendicular to the vertical direction. The lower end of the tank wall 2 connects to the tank bottom plate 1. (Refer to...) Figure 2 The lower edge of the tank wall 2 is provided with an arc-shaped discharge port 3. The bottom plate 1 of the tank defines the chord of the arc, and the tank wall 2 defines the arc of the arc. The arc can be a superior arc or a inferior arc.

[0023] Reference Figure 1 , Figure 2 and Figure 5 The outer diameter of the drain pipe 4 matches the radius of the arc, meaning the outer diameter of the drain pipe 4 is equal to the radius of the circle containing the arc of the drain outlet 3. The axis of the drain pipe 4 is parallel to the extension direction of the tank bottom plate 1. Figures 3 to 7 The tank bottom plate 1 divides the wall of the drain pipe 4 into an upper pipe wall 41 and a lower pipe wall 42, and the upper pipe wall 41 is inserted into the drain port 3. The outer wall of the upper pipe wall 41 is sealed to the lower edge of the tank wall 2, and the interior of the upper pipe wall 41 is connected to the interior of the tank wall 2. The wall of the drain pipe 4 has an avoidance opening 43 at the position corresponding to the tank bottom plate 1, so that the wall of the drain pipe 4 can be partially inserted into the tank bottom plate 1. The wall of the drain pipe 4 and the tank bottom plate 1 are sealed to each other at the intersection, so that the drain pipe 4 connects the tank wall 2 and the tank bottom plate 1 at the same time. The structure is very stable and the risk of breakage is low.

[0024] Reference Figure 1 , Figure 4 and Figure 5 The sealing component 5 is used to seal the inside of the upper pipe wall 41. In this way, when the storage tank is in the storage state, the sealing component 5 can maintain the airtightness of the storage tank. When the bottom material cleaning operation is required, the sealing component 5 can then clear the inside of the upper pipe wall 41, so that the bottom material inside the tank wall 2 can be discharged from the inside of the upper pipe wall 41.

[0025] This device ingeniously designs the position and shape of the drain port 3 and the drain pipe 4. The drain port 3 is located at the lower edge of the tank wall 2 and is in an arc shape. The wall of the drain pipe 4 is divided into an upper pipe wall 41 and a lower pipe wall 42 by the bottom plate of the tank. The upper pipe wall 41 is inserted into the drain port 3. The outer wall of the upper pipe wall 41 is sealed to the lower edge of the tank wall 2. The interior of the upper pipe wall 41 is connected to the interior of the tank wall 2, which can discharge the bottom material inside the tank wall 2. Even if the liquid level of the remaining bottom material is very close to the bottom plate 1 of the tank, the arc-shaped design of the drain port 3 can still ensure the discharge flow rate.

[0026] Reference Figure 4 and Figure 5 When performing regular anti-corrosion maintenance on the drain pipe, operators can carry out construction operations at the connection between the outer wall of the upper pipe wall 41 and the lower edge of the tank wall 2, as well as at the intersection of the drain pipe 4 wall and the tank bottom plate 1, from the outside of the tank wall 2, without having to enter the inside of the tank wall 2, which is very convenient and safe.

[0027] In some embodiments, refer to Figure 2 The discharge port 3 is in the shape of an arc, which makes the cross-sectional area of ​​the discharge port 3 large and positively correlated with the discharge flow rate of the bottom material. Moreover, when the liquid level of the remaining bottom material is very close to the bottom plate 1 of the tank, the projection of the liquid level of the remaining bottom material on the discharge port 3 is close to the diameter of the circle containing the arc, so that the discharge cross-sectional area is still large and the discharge is smooth.

[0028] In some embodiments of this utility model, reference is made to Figure 5 The upper pipe wall 41 is inserted through the drain port 3 and extends into the interior of the tank wall 2, so that the upper pipe wall 41 has sufficient margin. Even if there is some rust or corrosion at the end of the upper pipe wall 41, it will not affect the sealing between the outer wall of the upper pipe wall 41 and the lower edge of the tank wall 2. It also increases the intersection length between the pipe wall of the drain pipe 4 and the bottom plate 1 of the tank, further strengthening the connection stability between the pipe wall of the drain pipe 4 and the bottom plate 1 of the tank.

[0029] Reference Figure 1 and Figure 5 In some embodiments, the tank bottom plate 1 protrudes outward from the tank wall 2 and extends to 1 / 3 to 2 / 3 of the axial length of the drain pipe 4, further increasing the intersection length between the drain pipe 4 wall and the tank bottom plate 1. Moreover, the tank bottom plate 1 does not completely penetrate the drain pipe 4, thus ensuring the structural strength of the drain pipe 4 itself.

[0030] In some embodiments of this utility model, reference is made to Figure 5 The sealing component 5 includes a baffle 51 and a cover plate 52.

[0031] Among them, the baffle 51 is in the shape of a minor arc. The baffle 51 is sealed to the inner wall of the lower pipe wall 42 and the lower side of the tank bottom plate 1. The baffle 51 is configured to block the channel between the inner wall of the lower pipe wall 42 and the lower side of the tank bottom plate 1, so as to prevent the bottom material from being discharged from the channel between the inner wall of the lower pipe wall 42 and the lower side of the tank bottom plate 1.

[0032] Reference Figure 1 , Figure 4 and Figure 5 The cover plate 52 is detachably connected to the end of the drain pipe 4 away from the tank wall 2. The cover plate 52 is configured to block the pipe wall of the drain pipe 4 away from the tank wall 2. The baffle 51 and the cover plate 52 are used together to block the inside of the upper pipe wall 41. When the bottom material needs to be cleaned, the cover plate 52 can be removed to allow the bottom material inside the tank wall 2 to be discharged from the end of the drain pipe 4 away from the tank wall 2.

[0033] In some embodiments, refer to Figure 3 , Figures 5 to 7 A flange 44 is provided circumferentially at one end of the drain pipe 4 away from the tank wall 2. Multiple first connecting holes 45 are spaced apart circumferentially on the flange 44. (Refer to...) Figure 4 and Figure 5 The cover plate 52 is provided with a plurality of second connecting holes 521 spaced apart along the circumference. The cover plate 52 and the drain pipe 4 are detachably connected by fasteners. The plurality of first connecting holes 45 and the plurality of second connecting holes 521 correspond one to one. After the fastener passes through the first connecting hole 45 and the second connecting hole 521, it is fastened to the nut.

[0034] In some embodiments, a sealing ring (not shown) is provided between the cover plate 52 and the drain pipe 4. (Refer to...) Figure 5 The sealing ring ensures the seal between the cover plate 52 and the drain pipe 4, preventing leakage of the bottom material.

[0035] In some embodiments, the outer wall of the upper pipe wall 41 is connected to the lower edge of the tank wall 2 by a weld, and the pipe wall of the drain pipe 4 is connected to the bottom plate 1 of the tank by a weld at the intersection. Operators can perform anti-corrosion maintenance on the weld from the outside of the tank wall 2 without having to enter the inside of the tank wall 2, which is very convenient.

[0036] In some embodiments, the axis of the drain pipe 4 extends radially along the tank wall 2, making it easier for the bottom material inside the tank wall 2 to enter the drain pipe 4, and also ensuring that the drain pipe 4 is in force balance.

[0037] Reference Figures 1 to 5 In some embodiments, the device further includes a bottom pad 6, which is disposed on the lower side of the tank bottom plate 1. The bottom pad 6 is used to support the tank bottom plate 1 upward and also protect the tank bottom plate 1 away from the ground. The bottom pad 6 is provided with a clearance area 61 at the position corresponding to the drain pipe 4, which facilitates the installation and operation of the drain pipe 4 and the cover plate 52.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A bottom cleaning device for atmospheric pressure storage tanks, characterized in that, include: The tank bottom plate extends horizontally; The can wall is cylindrical with its axis extending vertically. The lower end of the can wall is connected to the bottom plate of the can. An arc-shaped discharge opening is provided at the lower edge of the can wall. The bottom plate of the can defines the chord of the arc, and the can wall defines the arc of the arc. The drain tube has an outer diameter that matches the radius of the arc shape. The axis of the drain tube is parallel to the extension direction of the tank bottom plate. The tank bottom plate divides the wall of the drain tube into an upper wall and a lower wall, and the upper wall is inserted into the drain port. The outer wall of the upper wall is sealed to the lower edge of the tank wall. The interior of the upper wall is in communication with the interior of the tank wall. The drain tube has an opening at a position corresponding to the tank bottom plate. The drain tube and the tank bottom plate are sealed to each other at their intersection. A sealing element, used to seal the interior of the upper pipe wall.

2. The atmospheric pressure storage tank bottom cleaning device according to claim 1, characterized in that, The drain opening is in the shape of an arc.

3. The atmospheric pressure storage tank bottom cleaning device according to claim 1 or 2, characterized in that, The upper tube wall is inserted through the drain port and extends into the interior of the tank wall.

4. The atmospheric pressure storage tank bottom cleaning device according to claim 3, characterized in that, The bottom plate of the tank protrudes outward from the tank wall and extends to 1 / 3 to 2 / 3 of the axial length of the discharge pipe.

5. The atmospheric pressure storage tank bottom cleaning device according to claim 4, characterized in that, The sealing element includes a baffle and a cover plate. The baffle is in the shape of a minor arc and is sealed to the inner wall of the lower pipe wall and the lower side of the tank bottom plate. The baffle is configured to block the channel between the inner wall of the lower pipe wall and the lower side of the tank bottom plate. The cover plate is detachably connected to the end of the drain pipe away from the tank wall. The cover plate is configured to block the pipe wall at the end of the drain pipe away from the tank wall.

6. The atmospheric pressure storage tank bottom cleaning device according to claim 5, characterized in that, The drain pipe has a flange at one end away from the tank wall, and the flange has a plurality of first connecting holes spaced apart circumferentially. The cover plate has a plurality of second connecting holes spaced apart circumferentially. The cover plate and the drain pipe are detachably connected by fasteners.

7. The atmospheric pressure storage tank bottom cleaning device according to claim 5 or 6, characterized in that, A sealing ring is provided between the cover plate and the drain pipe.

8. The atmospheric pressure storage tank bottom cleaning device according to claim 4, characterized in that, The outer wall of the upper pipe is connected to the lower edge of the tank wall by a weld, and the wall of the drain pipe is connected to the bottom plate of the tank by a weld at the intersection.

9. The atmospheric pressure storage tank bottom cleaning device according to claim 1, characterized in that, The axis of the discharge tube extends radially along the tank wall.

10. The atmospheric pressure storage tank bottom cleaning device according to claim 1, characterized in that, It also includes a bottom pad, which is disposed on the underside of the tank bottom plate and is used to support the tank bottom plate upward. The bottom pad has an air-avoiding area at the position corresponding to the discharge pipe.

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