CN220536548U - Adjustable inner floating roof storage tank manhole with core - Google Patents

Abstract

The utility model discloses an adjustable inner floating roof storage tank cored manhole, which comprises a vertical hanging cover manhole part and a cylinder core part. According to the manhole flange cover, the vertical hanging cover manhole part is arranged, namely the hanging rod is welded at the top of the vertical axis direction of the manhole flange cover, and the hanging rod is matched with the adjusting nut to be connected with the rotating mechanism arranged on the side edge of the horizontal axis direction of the manhole flange cover, so that the installation deviation of the manhole flange cover is flexibly adjusted, the manhole flange cover is stable in sealing performance against the pressure, the barrel core part is arranged, namely the barrel core part and the vertical hanging cover manhole part are in split type, the structure of the cored manhole is compact, and the manhole is convenient to reform and damage to the cored manhole is reduced in the subsequent use process.

Description

Adjustable inner floating roof storage tank manhole with core

Technical Field

The utility model relates to the field of inner floating roof storage tank manholes, in particular to an adjustable inner floating roof storage tank cored manhole.

Background

In the petrochemical production process, a large number of mediums are volatile, inflammable and explosive, a large number of inner floating roof storage tanks are needed for storing product mediums, corresponding manholes are needed to be arranged on the walls of the storage tanks for facilitating the overhaul of the inner floating trays, the manholes refer to open pore structures for personnel to enter and exit equipment for installation, overhaul and safety inspection, and the open pore structures mainly comprise short cylinder sections (or short pipes), flanges and manholes covers with handles;

at present, the common method of the manhole is that two groups of rib plates and core plates are welded on the inner side of a manhole cover on the basis of a standard manhole of HG/T21516-21524-2014, in order to ensure that a floating disc is not blocked and a sealing device is protected, the gap between the core plate and the inner wall of a manhole shell ring is controlled within 30mm, but the aim is achieved, the overhanging length of the manhole shell ring is required to be reduced, the bolt installation space of the manhole is greatly reduced, and the tightening of nuts is not facilitated;

secondly, under the condition that the outer side of the storage tank is provided with heat insulation, the heat insulation thickness is often larger than the overhanging height of a manhole, the manhole is inconvenient to open in the installation and overhaul processes, the heat insulation structure of the tank wall is easy to damage, if the installation space of the manhole is increased or the influence of the heat insulation structure on a manhole switch is reduced, the gap between the core plate and the inner wall of a manhole shell ring is required to be enlarged, the floating disc sealing device is easy to clamp at the gap, the sealing element is damaged, and meanwhile, the floating disc can not be clamped and lifted;

in some literature data, part of units are improved on the rotating structure of a manhole, a movable guide rail in the axial direction of the manhole is additionally arranged, so that a core plate is firstly pulled out of the manhole along with the manhole cover and then is moved to the side face by a rotating shaft;

therefore, the inner floating roof storage tank cored manhole structure needs to be improved, so that the inner floating roof storage tank cored manhole with small structural gap, convenient installation, safe and reliable operation and different heights can be designed according to actual conditions.

Disclosure of Invention

Therefore, in order to solve the defects, the utility model provides an adjustable inner floating roof storage tank cored manhole.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an adjustable inner floating roof storage tank takes core manhole, includes perpendicular hanging lid manhole part, perpendicular hanging lid manhole part inside has connect a section of thick bamboo core part, perpendicular hanging lid manhole part and section of thick bamboo core part meet in storage tank body bottom, perpendicular hanging lid manhole part includes manhole flange lid, installs in the sealed pad of manhole flange lid upper end, peg graft in the fastener in the manhole flange lid outside, meet in the fastener upper end and with the manhole flange that manhole flange lid upper end is relative, fasten in the manhole cylindrical shell section at manhole flange top, weld in the manhole cover handle of manhole flange lid lower extreme both sides, meet in the rotary mechanism of manhole flange right side, weld in the jib of manhole flange lid rear side and locate the adjusting nut of jib rear side, the jib meets with the rotary mechanism rear side.

Preferably, the cylinder core part comprises a sealing ring connected to the inside of the sealing gasket, a limiting ring arranged on the outer side of the sealing ring, a core plate arranged on the upper end of the inside of the manhole cylinder section, supporting rib plates welded on two sides of the lower end of the core plate, a cylinder nipple arranged in the sealing ring and a handle rod arranged at the contact end part of the supporting rib plates and the cylinder nipple.

Preferably, the vertical hanging cover manhole part and the cylinder core part are designed in a split type.

Preferably, the fastening piece and the manhole flange penetrate through the outer ring of the manhole flange cover, and the fastening piece and the manhole flange are sequentially arranged at equal intervals along the annular track.

Preferably, the manhole cover handle is welded on two sides of the manhole flange cover in the vertical axis direction, and the outer surface of the manhole cover handle is smooth and is arranged in a barb-free polishing mode.

Preferably, the limiting rings are welded and connected along the symmetrical surfaces of the side edges of the sealing rings, and the middle parts of the limiting rings can be correspondingly inserted with the fastening pieces.

Preferably, the core plate is flush with the inner wall of the bottom of the storage tank body, and the distance between the left side and the right side of the core plate and the manhole shell ring is not more than 4mm.

Preferably, one end of the supporting rib plate is welded and fixed with the core plate, and the other end of the supporting rib plate is welded and fixed with the cylinder nipple.

The utility model has the beneficial effects that:

advantage 1: according to the manhole shell ring, the length of the manhole shell ring meeting the regulation can be designed according to the use requirements (such as the heat preservation thickness, the manhole pressure-bearing grade and the installation position) of the storage tank body, the design height of the shell core part is determined, and the height flexibility and the adjustability of the manhole with the core are realized.

Advantage 2: the vertical hanging cover manhole part and the cylinder core part adopt a split design, and the form omits the existing axial guide rail structure, so that the whole structure of the cored manhole is compact and reasonable, and the trafficability of a platform channel is increased;

advantage 3: according to the utility model, the side surfaces of the sealing rings are symmetrically provided with a group of limiting rings, and the correct installation orientation of the cylinder core part can be ensured by arranging the limiting rings oppositely and in a limiting fit, so that the manhole part of the vertical hanging cover is connected with the cylinder core part quickly and accurately;

advantage 4: the rotating mechanism, the suspender and the adjusting nut can be corrected and matched when the installation of the manhole flange cover in the vertical direction is deviated, so that the manhole flange cover can be accurately installed.

Drawings

FIG. 1 is a schematic top view of the cross-sectional structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

fig. 3 is a schematic diagram of a gap structure between a core plate and a Kong Tongjie of the utility model.

Wherein: the vertical hanging cover manhole part-1, a manhole flange cover-11, a sealing gasket-12, a fastener-13, a manhole flange-14, a manhole shell ring-15, a manhole cover handle-16, a rotating mechanism-17, a hanging rod-18, an adjusting nut-19, a cylinder core part-2, a sealing ring-21, a limiting ring-22, a core plate-23, a supporting rib plate-24, a cylinder nipple-25, a handle bar-26 and a storage tank body-3.

Detailed Description

In order to further explain the technical scheme of the utility model, the following is explained in detail through specific examples.

Referring to fig. 1-3, the utility model provides an adjustable inner floating roof tank cored manhole, comprising a vertical hanging cover manhole part 1, a barrel core part 2 is connected in the vertical hanging cover manhole part 1, the vertical hanging cover manhole part 1 and the barrel core part 2 are connected at the bottom of a tank body 3, the vertical hanging cover manhole part 1 comprises a manhole flange cover 11 for convenient opening and closing, a sealing gasket 12 correspondingly arranged at the upper end of the manhole flange cover 11, the sealing gasket 12 is arranged between the manhole flange cover 11 and a manhole flange 14, a fastening piece 13 is equidistantly inserted at the outer side of the manhole flange cover 11 to realize insertion sealing fastening fit, nuts are connected at the upper end and the lower end of the fastening piece 13 in a threaded manner so as to realize spiral locking fit, the manhole flange 14 is connected at the upper end of the fastening piece 13 and opposite to the upper end of the manhole flange cover 11, and the outside of the manhole flange 14 is correspondingly provided with bolt holes, the bolt holes formed in the manhole flange 14 are arranged in a midspan manner along the vertical axis direction, the corresponding fastening butt joint is carried out on a manhole shell ring 15 at the upper end of the manhole flange 14, one side of the manhole shell ring 15 away from the manhole flange 14 is welded and fixed with a storage tank body 3, the manhole handles 16 at the left side and the right side of the lower end of the manhole flange cover 11 are welded and fixed, a rotating mechanism 17 is arranged at the side edge of the right side horizontal axis direction of the manhole flange 14 so as to conveniently realize convenient opening and closing of the manhole flange cover 11 through the rotating mechanism 17, a suspender 18 is welded and fixed at the top of the vertical axis direction of the manhole flange cover 11, and an adjusting nut 19 is arranged at the rear side of the suspender 18 so as to realize fastening connection fit, so that the suspender 18 and the rotating mechanism 17 are combined and firmly connected, and the suspender 18 is connected with the rear side of the rotating mechanism 17.

The manhole part 1 and the cylinder core part 2 of the vertical hanging cover are designed in a split mode, so that convenience in opening and closing of the manhole flange cover 11 is guaranteed, an existing axial guide rail structure is omitted, the integral structure of the manhole with the core becomes compact and reasonable, and meanwhile, the trafficability of a platform channel is improved; the fastening piece 13 and the manhole flange 14 penetrate through the outer ring of the manhole flange cover 11, and the fastening piece 13 and the manhole flange 14 are sequentially arranged at equal intervals along the annular track, so that firm connection and matching between the fastening piece 13 and the manhole flange 14 are realized through multiple positions; the manhole cover handles 16 are welded on two sides of the manhole flange cover 11 in the vertical axis direction, and the outer surfaces of the manhole cover handles 16 are smooth and are polished without barbs, so that the manhole cover handles are held and opened without scratching.

The barrel core part 2 comprises a sealing ring 21 connected to the inside of the sealing gasket 12, a limiting ring 22 correspondingly welded to the outer side of the sealing ring 21 to realize positioning connection and matching, a core plate 23 arranged at the upper end inside the manhole barrel section 15, support rib plates 24 welded and fixed to the left and right sides inside the lower end of the core plate 23 so as to match the support rib plates 24 to improve the overall firmness of the barrel core part 2, a barrel nipple 25 welded to the lower end of the barrel core part 2 and arranged inside the sealing ring 21, and a handle bar 26 arranged at the contact end part of the support rib plates 24 and the barrel nipple 25.

The limiting ring 22 is welded and connected along the side symmetrical surface of the sealing ring 21, the middle part of the limiting ring 22 can be correspondingly inserted with the fastening piece 13, and a round hole with the same position and size as the bolt hole formed in the manhole flange 14 is formed in the middle part of the limiting ring 22, so that the cylinder core part 2 is matched with the limiting ring 22 to realize the installation and arrangement in the correct direction; the core plate 23 is flush with the inner wall of the bottom of the storage tank body 3, and the distance between the left side and the right side of the core plate 23 and the manhole cylindrical shell section 15 is not more than 4mm, so that the damage of a gap to the floating disc sealing device is greatly reduced; one end of the supporting rib plate 24 is welded and fixed with the core plate 23, and the other end of the supporting rib plate 24 is welded and fixed with the cylinder nipple 25, so that the formed cylinder core part 2 is in a firm state.

The working principle is as follows:

first, bolt holes are arranged in the vertical axis direction at the outside of the manhole flange cover 11 in a midspan manner, then the boom 18 is welded to the top of the manhole flange cover 1 in the vertical axis direction, and the manhole cover handles 16 are welded to both sides of the manhole flange cover 1 in the vertical axis direction, as shown in fig. 2.

Then, the manhole flange 14 and the manhole shell 15 are butt-jointed and moved, the manhole flange 14 and the manhole shell 15 are combined into a cylindrical body, and after the butt joint is completed, the cylindrical body is welded on the storage tank body 3 as required, then, as shown in fig. 2, the rotating mechanism 17 is connected with the side surface of the manhole flange 14 in the horizontal axis direction, and then, the bolt holes of the manhole flange 14 are arranged in a midspan manner along the vertical axis direction and are opposite to the bolt holes formed in the outer side of the manhole flange cover 11 during the subsequent installation.

Then, hang the jib 18 of welding on the manhole flange cover 11 on the slewing mechanism 14 that manhole flange 14 horizontal axis direction side set up to fix with adjusting nut 19, in proper order, guarantee the manhole flange cover 11 and connect with the stability that follow-up opened and shut, can learn from fig. 2, secondly, when the installation of manhole flange cover 11 vertical direction appears the deviation, accessible jib 18 on adjusting nut 19 corrects, flexible operation is convenient.

It can be seen from fig. 1 that the spacing ring 22 is welded on the opposite outer sides of the sealing ring 21 according to the requirement, so as to ensure the correct installation position of the cylinder core part 2, while the cylinder nipple 25 can be welded on the inner side of the sealing ring 21, meanwhile, one end of the supporting rib plate 24 is welded with the core plate 23 arranged on the upper end, while the other end of the supporting rib plate 24 is welded on the inner wall of the cylinder nipple 25, so as to form a firm cylinder core part 2, while as can be seen from fig. 2, the end part of the supporting rib plate 24, which is contacted with the cylinder nipple 25, is welded with the handle bar 26, so as to jointly form the cylinder core of the manhole, while the core plate 23 is flush with the inner wall of the storage tank body 3 during installation, and the gap between the core plate 23 and the inner wall of the manhole cylinder section 15 can be controlled within 4mm, so that the damage of the gap to the floating disc sealing device is greatly reduced.

As shown in fig. 1, a sealing gasket 12 is sleeved outside the lower port of the assembled and welded cylinder core, the whole cylinder core part 2 is plugged into the manhole, and the whole cylinder core part 2 is rotated to enable a limiting ring 22 arranged at the side symmetry of a sealing ring 21 to rotate to a specified direction, so that positioning connection matching is realized, then, a manhole flange cover 11 is moved to the front of a manhole flange 14 through a rotating mechanism 17, and another sealing gasket 12 is arranged between the manhole flange cover 11, the sealing ring 21, the limiting ring 22, the sealing gasket 12 and the manhole flange 14, after the installation positions of the manhole flange cover 11, the sealing ring 21, the limiting ring 22 and the manhole flange 14 are in butt joint, a fastener 13 can be adopted for screwing, so that the vertical hanging cover manhole part 1 and the cylinder core part 2 are in sealing combination, and the sealing requirement of a manhole with a core is ensured.

When the manhole is to be opened, the fasteners 5 connected with the bolt holes arranged on the outer side of the manhole flange cover 11 are sequentially detached, then the manhole flange cover 11 can be moved to be opened to the side surface of the manhole through the rotating mechanism 17, and finally the barrel core part 2 is pulled out through the handle 26 and placed in a safe area, so that the manhole can be opened, and an maintainer can rapidly carry out the operation in the storage tank from the manhole, thereby completing the rapid assembly and the opening and closing of the manhole with the core of the inner floating roof storage tank;

the manhole with the core can design the length of a manhole shell section which meets the regulations according to the use requirements of the storage tank body 3, such as the heat preservation thickness, the manhole pressure-bearing grade and the installation position, and the design height of the shell core is determined according to the length, so that the flexible and adjustable fit of the manhole size is achieved;

meanwhile, the manhole flange cover 11 of the cored manhole is in a split design with the cylinder core part 2, and after the subsequent disassembly, the cylinder core part 2 can be directly pulled out to accelerate the manhole opening efficiency, an axial guide rail structure is not needed, so that the cored manhole has a compact and reasonable structure, and the trafficability of a platform channel is increased.

The utility model provides an adjustable inner floating roof storage tank cored manhole, which is provided with a vertical hanging cover manhole part 1, namely a manhole flange cover 11 is welded with a hanging rod 18 at the top in the vertical axis direction, and is matched with an adjusting nut 19 to be connected with a rotating mechanism 17 arranged on the side edge of the manhole flange 14 in the horizontal axis direction, so that the installation deviation of the manhole flange cover 11 is flexibly adjusted, the manhole flange cover 11 is stable in abutting tightness, and a barrel core part 2 is arranged, namely the barrel core part 2 and the vertical hanging cover manhole part 1 are in split type, so that the cored manhole has a compact structure, and is convenient to modify and reduce damage to the cored manhole in the subsequent use process.

The foregoing is merely a preferred example of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. An adjustable inner floating roof storage tank cored manhole which is characterized in that: including perpendicular hanging lid manhole part (1), perpendicular hanging lid manhole part (1) inside meets has a section of thick bamboo core part (2), perpendicular hanging lid manhole part (1) meets in storage tank body (3) bottom with section of thick bamboo core part (2), perpendicular hanging lid manhole part (1) include manhole flange lid (11), install sealed pad (12) in manhole flange lid (11) upper end, peg graft fastener (13) in manhole flange lid (11) outside, meet in fastener (13) upper end and with manhole flange lid (11) upper end relative manhole flange (14), fasten in manhole section of thick bamboo (15) at manhole flange (14) top, weld in manhole flange lid (11) lower extreme both sides manhole cover handle (16), meet in slewing mechanism (17) on manhole flange (14) right side, weld in jib (18) of manhole flange lid (11) rear side and locate adjusting nut (19) of jib (18) rear side, jib (18) meet with slewing mechanism (17) rear side.

2. The adjustable inner floating roof tank cored manhole as recited in claim 1, wherein: the cylinder core part (2) comprises a sealing ring (21) connected to the inside of the sealing gasket (12), a limiting ring (22) arranged on the outer side of the sealing ring (21), a core plate (23) arranged on the upper end inside the manhole cylinder section (15), supporting rib plates (24) welded on two sides of the lower end of the core plate (23), a cylinder nipple (25) arranged inside the sealing ring (21) and a handle (26) arranged at the contact end part of the supporting rib plates (24) and the cylinder nipple (25).

3. The adjustable inner floating roof tank cored manhole as recited in claim 1, wherein: the vertical hanging cover manhole part (1) and the cylinder core part (2) are designed in a split mode.

4. The adjustable inner floating roof tank cored manhole as recited in claim 1, wherein: the fastening piece (13) and the manhole flange (14) penetrate through the outer ring of the manhole flange cover (11), and the fastening piece (13) and the manhole flange (14) are sequentially arranged at equal intervals along the annular track.

5. The adjustable inner floating roof tank cored manhole as recited in claim 1, wherein: the manhole cover handle (16) is welded on two sides of the manhole flange cover (11) in the vertical axis direction, and the outer surface of the manhole cover handle (16) is smooth and is arranged in a barb-free polishing mode.

6. The adjustable inner floating roof tank cored manhole as recited in claim 2, wherein: the limiting rings (22) are welded and connected along the symmetrical surfaces of the side edges of the sealing rings (21), and the middle parts of the limiting rings (22) can be correspondingly inserted with the fastening pieces (13).

7. The adjustable inner floating roof tank cored manhole as recited in claim 2, wherein: the core plate (23) is flush with the inner wall of the bottom of the storage tank body (3), and the distance between the left side and the right side of the core plate (23) and the manhole shell ring (15) is not more than 4mm.

8. The adjustable inner floating roof tank cored manhole as recited in claim 2, wherein: one end of the supporting rib plate (24) is welded and fixed with the core plate (23), and the other end of the supporting rib plate (24) is welded and fixed with the cylinder nipple (25).