Sealing protective cover for floating roof strut

Abstract

The utility model provides a floating roof pillar sealing protective cover, which relates to the technical field of petrochemical engineering, and comprises a riser main body and a pipe sleeve main body, a positioning pin shaft penetrates through the connecting position of the riser main body and the pipe sleeve main body, and a first shell and a second shell with the same internal structure are respectively arranged on two sides outside the riser main body; three sets of limiting arc grooves are vertically formed in the inner wall of the first shell, vertical pipe sealing strips, joint sealing strips and sleeve sealing strips are sequentially arranged in the limiting arc grooves in a clamped mode, limiting plates are arranged on the two sides of the outer portion of the first shell and the two sides of the outer portion of the second shell, and the surfaces of the adjacent limiting plates are clamped with each other. The sealing strip is effectively prevented from falling off, the sealing strip does not need to be independently positioned, it is guaranteed that after clamping, the sealing strip is tightly attached to the stand pipe body and the sleeve body, meanwhile, no gap is formed in the abutting position of the first shell and the sealing strip, inner and outer double-layer sealing is achieved through the sealing strip and the first shell, the structure is simple, sealing performance is good, and petroleum leakage or volatilization is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical industry, in particular to a sealing protective cover for a floating roof support. Background Art

[0002] According to the standard GB50160-2018 "Petrochemical Enterprise Design Fire Protection Code", the use of steel inner floats in fixed-roof tanks for Class A and Class B liquids is an indispensable device to prevent the volatilization of light oil products. The steel inner float of the storage tank needs to be supported by a large number of floating roof pillars to raise it to a certain height from the tank bottom to facilitate maintenance and repair of the interior of the tank. At present, the floating roof pillars in the industry are composed of a combination of risers and sleeves, connected by pins, and the risers and sleeves are sealed with rubber sleeves on the outside of the risers and sleeves to achieve a sealing effect. Because the storage tank requires a large number of pillars to support it, oil and gas leakage during the support of each pillar is a problem that cannot be ignored.

[0003] Currently, the industry needs to optimize the positioning of the floating roof supports. The rubber seals between the supports and casings are exposed, prone to aging and leading to oil and gas leaks. The pins at the connection between the riser and casing are completely exposed and the gap is not sealed. Oil and gas can evaporate through the gap and form an oil and gas space above the floating roof. Due to safety and loss considerations, this configuration is not suitable for long-term use.

[0004] The prior art has the following technical problems:

[0005] 1. When sealing the surface of the floating roof support, the sealing strip and the shell are generally separated. Frequent positioning is required during sealing, which is inconvenient to install.

[0006] 2. When connecting the shell or cover plates, the holes are generally aligned and then positioned with bolts. The hole alignment is inconvenient, and the surface seal of the floating roof support cannot be quickly disassembled and assembled when disassembling, making it difficult to operate. Utility Model Content

[0007] The utility model aims to solve the shortcomings of the prior art, that is, the sealing strip is inconvenient to install and the surface of the floating roof support cannot be quickly disassembled and assembled, and proposes a floating roof support sealing protective cover.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a floating roof pillar sealing protective cover, comprising a riser body and a pipe sleeve body, the pipe sleeve body being sleeved with the end of the riser body, a positioning pin being passed through the connection position between the riser body and the pipe sleeve body, a first shell and a second shell with the same internal structure being respectively provided on both sides of the outside of the riser body, three groups of limiting arc grooves being vertically provided on the inner wall of the first shell, a riser sealing strip, a seam sealing strip and a sleeve sealing strip being sequentially engaged with the inside of the limiting arc grooves, limiting plates being provided on both sides of the outside of the first shell and the second shell, and adjacent surfaces of the limiting plates being engaged with each other.

[0009] Preferably, positioning sealing rings are sleeved on both ends of the positioning pin surface, and the surface of the positioning sealing ring is against the surface of the sleeve body, and a positioning nut is threadedly connected to the surface of the positioning pin surface, and the positioning nut is against the surface of the positioning sealing ring.

[0010] Preferably, a vertical tube cavity is provided near the top inside the first shell, a sleeve cavity is provided near the bottom of the first shell, and a pin cavity is provided on the side of the sleeve cavity at a position corresponding to the positioning pin.

[0011] Preferably, the surface of the limiting plate of the first shell is provided with a limiting block and a limiting screw shaft, and the surface of the limiting plate of the second shell is provided with a limiting groove and a limiting hole, and the limiting groove and the limiting block are loosely matched, and the limiting hole and the limiting screw shaft are loosely matched, and the surface of the limiting screw shaft is provided with a limiting nut.

[0012] Preferably, the limiting arc groove is located successively at the inner wall of the first shell near the top position, the inner wall of the first shell near the bottom position, and the joint position of the vertical tube body and the sleeve body on the inner wall of the first shell, and the side cross-section of the limiting arc groove is a T-shaped groove or an I-shaped groove.

[0013] Preferably, the riser sealing strip, the sleeve sealing strip and the joint sealing strip are all clearance-fitted with the inner wall of the limiting arc groove, and the cross-section of the top surface of the adjacent limiting arc grooves after the first shell and the second shell are assembled is circular.

[0014] Preferably, the inner wall of the first shell and the inner wall of the second shell are both against the outer surfaces of the riser body and the sleeve body, and the first shell and the second shell are symmetrically distributed along the center line of the cross section of the top surface of the riser body.

[0015] Beneficial effects

[0016] In the present invention, the first shell and the second shell are used to cooperate to engage and position the surfaces of the riser body and the casing body, and three groups of riser sealing strips, casing sealing strips and joint sealing strips that engage with the limiting arc grooves are provided inside to seal the surface of the riser body, the surface of the casing body and the joint position between the riser body and the casing body respectively. The integrated structure of the first shell and the sealing strip is adopted to effectively prevent the sealing strip from falling off, and is convenient for quick installation. There is no need to position the sealing strip separately, ensuring that the sealing strip is tightly attached to the riser body and the casing body after engagement, and there is no gap at the position where the first shell abuts against them. The sealing strip and the first shell realize internal and external double-layer sealing, which has a simple structure and good sealing performance, and effectively prevents oil leakage or volatilization.

[0017] In the present invention, the outer surfaces of the first shell and the second shell are engaged with each other through the surface of the limit plate to position them for installation on the surface of the riser body. Compared with the traditional method of aligning the holes set on the surface of the limit plate and then inserting the bolts, the limit plate surface of the present application has a self-engaging structure, which automatically aligns the holes of the first shell and the second shell after they are engaged, and does not require manual support and is not easy to fall off, which facilitates the subsequent secondary tightening of the limit nut. The installation and disassembly are more convenient and easy to operate, and facilitate the rapid positioning and disassembly of the surfaces of the riser body and the sleeve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a split structure diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 3 This is a structural diagram of the internal part of the utility model;

[0021] Figure 4 This is a disassembled structural diagram of the first shell of the present utility model;

[0022] Figure 5 This is a disassembled structural diagram of the second shell of the present utility model;

[0023] Figure 6 This is a diagram showing the internal structure of the second housing of the present invention;

[0024] Figure 7 This is a diagram of the first shell connection structure of the present utility model.

[0025] Legend:

[0026] 1. Riser body; 2. Casing body; 3. Positioning pin; 4. Positioning nut; 5. Positioning seal; 6. First shell; 7. Second shell; 8. Pin cavity; 9. Riser cavity; 10. Casing cavity; 11. Limit block; 12. Limit screw; 13. Limit groove; 14. Limit hole; 15. Limit nut; 16. Riser sealing strip; 17. Casing sealing strip; 18. Joint sealing strip; 19. Limit arc groove; 20. Limit plate. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0028] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment one:

[0030] Reference Figure 1-7 The floating roof pillar sealing protection cover comprises a riser body 1 and a pipe sleeve body. The pipe sleeve body is sleeved with the end of the riser body 1. A positioning pin 3 is provided through the connection position between the riser body 1 and the pipe sleeve body. Positioning sealing rings 5 ​​are sleeved at both ends of the surface of the positioning pin 3, and the surface of the positioning sealing ring 5 is abutted against the surface of the casing body 2. A positioning nut 4 is threadedly connected to the surface of the positioning pin 3, and the surface of the positioning nut 4 is abutted against the surface of the positioning sealing ring 5. After the riser body 1 and the casing body 2 are connected, the overlapping position is set due to the hole passed through by the positioning pin 3. After the positioning pin 3 is inserted along the side of the casing body 2, the riser body 1 and the casing body 2 are positioned, and the positioning sealing rings 5 ​​are sleeved on the surfaces of both ends of the positioning pin 3 for sealing. The positioning nut 4 is used for rotational positioning to achieve positioning between the riser body 1 and the casing body 2, while maintaining a stable connection, avoiding leakage at the position where the positioning pin 3 penetrates.

[0031] In order to prevent gas leakage between the riser body 1 and the casing body 2 after connection, the surface of the riser body 1, the surface of the casing body 2 and the joint position between the riser body 1 and the casing body 2 are sealed respectively. The specific structure is that the first shell 6 and the second shell 7 with the same internal structure are respectively provided on both sides of the outside of the riser body 1. The inner wall of the first shell 6 is vertically provided with three groups of limiting arc grooves 19. The limiting arc grooves 19 are located in the inner wall of the first shell 6 near the top position, the inner wall of the first shell 6 near the bottom position, and the inner wall of the first shell 6 vertical position. At the joint position of the pipe body 1 and the casing body 2, the side cross-section of the limiting arc groove 19 is a T-shaped groove or an I-shaped groove, and the interior of the limiting arc groove 19 is sequentially engaged with a riser sealing strip 16, a seam sealing strip 18 and a casing sealing strip 17. Both sides of the exterior of the first shell 6 and the second shell 7 are provided with a limiting plate 20, and the surfaces of the adjacent limiting plates 20 are engaged with each other. When the riser sealing strip 16, the seam sealing strip 18 and the casing sealing strip 17 are engaged with the limiting arc groove 19, since the riser sealing strip 16, the seam sealing strip 18 and the casing sealing strip 17 are The flexible rubber material is clamped with the inner wall of the limiting arc groove 19 after being squeezed, and the installation and clamping with the limiting arc groove 19 are maintained by the rebound of the rubber material. The inner wall of the riser sealing strip 16, the seam sealing strip 18 and the sleeve sealing strip 17 after being clamped exceeds the inner wall of the first shell 6 by 1-2mm. By reserving the deformation size, the riser sealing strip 16, the seam sealing strip 18 and the sleeve sealing strip 17 are squeezed when the first shell 6 and the second shell 7 are connected and positioned, and they are kept connected with the surface of the riser main body 1 and the sleeve main body 2. The tightness of the connection position, the integrated structure of the first shell 6 and the sealing strip is engaged. Compared with the traditional separate structure, each sealing strip is not easy to fall off after installation, and the positioning is precise, which effectively prevents the sealing strip from falling off, and is convenient for quick installation. There is no need to position the sealing strip separately, ensuring that the sealing strip is tightly attached to the riser body 1 and the sleeve body 2 after engagement, while there is no gap between the first shell 6 and the abutment position. The inner and outer double-layer sealing is achieved by the sealing strip and the first shell 6, with a simple structure and good sealing, which effectively prevents oil leakage or volatilization.

[0032] In order to increase the adaptability between the first shell 6 and the second shell 7 and the riser body 1 and the sleeve body 2, a riser cavity 9 is provided near the top of the first shell 6, and a sleeve cavity 10 is provided near the bottom of the first shell 6. A pin cavity 8 is provided on the side of the sleeve cavity 10 corresponding to the positioning pin 3. By providing the riser cavity 9 and the sleeve cavity 10, the dimensions of the riser body 1 and the sleeve body 2 are adapted. At the same time, the pin cavity 8 is provided to wrap the position of the positioning pin 3 to prevent the positioning pin 3 and the positioning sealing ring 5 on its surface from being exposed to the outside for a long time and aging, thereby affecting the sealing effect. By wrapping the positioning sealing ring 5, the service life is extended.

[0033] In order to realize the rapid installation of the first shell 6 and the second shell 7, a limiting block 11 and a limiting screw shaft 12 are provided on the surface of the limiting plate 20 of the first shell 6, and a limiting groove 13 and a limiting hole 14 are provided on the surface of the limiting plate 20 of the second shell 7, and the limiting groove 13 is clearance-matched with the limiting block 11, and the limiting hole 14 is clearance-matched with the limiting screw shaft 12, and a limiting nut 15 is provided on the surface of the limiting screw shaft 12. When the first shell 6 and the second shell 7 are engaged, they are wrapped along both sides of the riser body 1, and the limiting plates 20 at corresponding positions are positioned between each other through the limiting groove 13, the limiting hole 14, the limiting block 11 and the limiting screw shaft The shaft 12 is engaged, and after engagement, the first shell 6 and the second shell 7 remain stable and will not fall off without manual support. Then the limiting nut 15 on the surface of the limiting screw shaft 12 is rotated and installed to achieve the fastening installation of the first shell 6 and the second shell 7. The surface of the limiting plate 20 of the present application has a self-engaging structure, so that the holes of the first shell 6 and the second shell 7 are automatically aligned after engagement, and no manual support is required, and it is not easy to fall off, which is convenient for the subsequent secondary tightening of the limiting nut 15. The installation and disassembly are more convenient and easy to operate, and it is convenient for the rapid positioning and disassembly of the surfaces of the standpipe body 1 and the sleeve body 2.

[0034] Other restrictive structures of the entire device are as follows: the riser sealing strip 16, the sleeve sealing strip 17 and the seam sealing strip 18 are all clearance-fitted with the inner wall of the limiting arc groove 19; the top cross-section of the adjacent limiting arc groove 19 after the first shell 6 and the second shell 7 are assembled is circular, maintaining its fit with the surface contours of the riser body 1 and the sleeve body 2; the inner walls of the first shell 6 and the second shell 7 are both against the outer surfaces of the riser body 1 and the sleeve body 2; the first shell 6 and the second shell 7 are symmetrically distributed along the midline of the top cross-section of the riser body 1. Specific embodiment two:

[0036] Reference Figure 1-7 , based on the content of the specific embodiment 1, the following contents are further disclosed:

[0037] In order to increase the sealing during connection, a silicone coating can be applied to the inner walls of the first shell 6 and the second shell 7. On the one hand, it increases the friction with the surface of the riser guard and the casing body 2 to prevent sliding in the vertical direction. On the other hand, the silicone coating can further isolate the air and improve the sealing performance of the entire first shell 6 and the second shell 7.

[0038] In summary:

[0039] 1. The first shell 6 and the second shell 7 cooperate to engage and position the surfaces of the riser body 1 and the casing body 2. Three sets of riser sealing strips 16, casing sealing strips 17, and joint sealing strips 18 that engage with the limiting arc grooves 19 are provided internally to seal the surfaces of the riser body 1, the casing body 2, and the joint between the riser body 1 and the casing body 2. The integrated structure of the first shell 6 and the sealing strips effectively prevents the sealing strips from falling off and facilitates quick installation without the need for separate positioning of the sealing strips. After engagement, the sealing strips are tightly attached to the riser body 1 and the casing body 2, while no gap is formed at the position where the first shell 6 abuts against them. The sealing strips and the first shell 6 achieve a double-layer seal inside and outside, resulting in a simple structure and good sealing performance, effectively preventing oil leakage or volatilization.

[0040] 2. The outer surfaces of the first shell 6 and the second shell 7 are engaged with each other through the surface of the limit plate 20 to position them on the surface of the riser body 1. Compared with the traditional method of aligning the holes set on the surface of the limit plate 20 and then inserting the bolts, the surface of the limit plate 20 of the present application has a self-engaging structure, so that the holes of the first shell 6 and the second shell 7 are automatically aligned after being engaged, and no manual support is required, and it is not easy to fall off, which is convenient for the subsequent secondary tightening of the limit nut 15. The installation and disassembly are more convenient and easy to operate, and it is convenient for the rapid positioning and disassembly of the surfaces of the riser body 1 and the sleeve body 2.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating roof support sealing protective cover, comprising a riser body (1) and a pipe sleeve body, characterized in that: The pipe sleeve body is sleeved with the end of the riser body (1); a positioning pin shaft (3) is provided through the connection position between the riser body (1) and the pipe sleeve body; a first shell (6) and a second shell (7) with the same internal structure are respectively provided on both sides of the outside of the riser body (1); three groups of limiting arc grooves (19) are vertically provided on the inner wall of the first shell (6); a riser sealing strip (16), a joint sealing strip (18) and a sleeve sealing strip (17) are sequentially engaged inside the limiting arc grooves (19); limiting plates (20) are provided on both sides of the outside of the first shell (6) and the second shell (7); adjacent surfaces of the limiting plates (20) are engaged with each other.

2. The floating roof support sealing protective cover according to claim 1, characterized in that: The two ends of the surface of the positioning pin shaft (3) are sleeved with positioning sealing rings (5), and the surface of the positioning sealing ring (5) abuts against the surface of the sleeve body (2); the surface of the positioning pin shaft (3) is threadedly connected with a positioning nut (4), and the positioning nut (4) abuts against the surface of the positioning sealing ring (5).

3. The floating roof support sealing protective cover according to claim 1, characterized in that: A vertical tube cavity (9) is provided inside the first shell (6) near the top, a sleeve cavity (10) is provided near the bottom, and a pin cavity (8) is provided on the side of the sleeve cavity (10) at a position corresponding to the positioning pin (3).

4. The sealing and protective cover of the floating roof support according to claim 1, characterized in that: The surface of the limiting plate (20) of the first shell (6) is provided with a limiting block (11) and a limiting screw shaft (12); the surface of the limiting plate (20) of the second shell (7) is provided with a limiting groove (13) and a limiting hole (14); the limiting groove (13) and the limiting block (11) are clearance-matched, the limiting hole (14) and the limiting screw shaft (12) are clearance-matched, and the surface of the limiting screw shaft (12) is provided with a limiting nut (15).

5. The floating roof support sealing protective cover according to claim 1, characterized in that: The limiting arc groove (19) is located successively at a position close to the top end of the inner wall of the first shell (6), a position close to the bottom end of the inner wall of the first shell (6), and a position at the joint between the standpipe body (1) and the sleeve body (2) on the inner wall of the first shell (6), and the side cross-section of the limiting arc groove (19) is a T-shaped groove or an I-shaped groove.

6. The sealing and protective cover of the floating roof support according to claim 1, characterized in that: The riser sealing strip (16), the casing sealing strip (17) and the joint sealing strip (18) are all clearance-matched with the inner wall of the limiting arc groove (19); and the top cross-section of the adjacent limiting arc grooves (19) after the first shell (6) and the second shell (7) are assembled is circular.

7. The sealing and protective cover of the floating roof support according to claim 1, characterized in that: The inner wall of the first shell (6) and the inner wall of the second shell (7) are both in contact with the outer surfaces of the riser body (1) and the casing body (2); the first shell (6) and the second shell (7) are symmetrically distributed along the center line of the top cross section of the riser body (1).

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