CN218705659U

CN218705659U - Low temperature storage tank anchor

Info

Publication number: CN218705659U
Application number: CN202222855419.8U
Authority: CN
Inventors: 贾杨; 孙君斌; 王任; 隋艳春
Original assignee: China Chengda Engineering Co Ltd
Current assignee: China Chengda Engineering Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a low temperature storage tank anchor, including last anchor board and lower anchor board, lower anchor board is buried underground in the cushion cap, and lower anchor board passes the tank bottoms composite sheet and is connected with last anchor board, goes up anchor board and inner tank wallboard and is connected, is equipped with in the tank bottoms composite sheet and protects a section of thick bamboo, protects the cylinder jacket and establishes under on the anchor board, and the upper end that protects a section of thick bamboo is the opening, and the up end that protects a section of thick bamboo is not higher than the upper surface of inner tank bottom plate, and the lower extreme that protects a section of thick bamboo is equipped with protects a shrouding, and lower anchor board passes and protects a shrouding and is connected with protecting a section of thick bamboo shrouding. The utility model has the advantages that: the main body of the anchoring pile casing structure is positioned below the secondary bottom plate, the upper end face of the anchoring pile casing does not exceed the upper surface of the inner tank bottom plate, so that the local stress generated by the inner tank wall plate, the anchoring plate and the secondary bottom plate due to inconsistent deformation is reduced, and a larger operation space is reserved for the welding operation of large-angle seams.

Description

Low temperature storage tank anchor

Technical Field

The utility model belongs to the petrochemical field, concretely relates to low temperature storage tank anchor.

Background

Cryogenic storage tanks used to store liquefied hydrocarbons such as Liquefied Natural Gas (LNG) and Liquefied Petroleum Gas (LPG) in the petroleum and chemical industries are often of an internal and external double-layer structure. For the storage tank without the vibration isolation facility, in order to ensure the safety of the storage tank under the action of earthquake load, an anchoring device is usually required to anchor the storage tank and the foundation.

The conventional low-temperature storage tank inner tank anchoring device mainly comprises a lower anchoring plate 3 pre-embedded in a concrete foundation bearing platform and an upper anchoring plate 1 connected with a tank wall, as shown in fig. 1 and 2. The lower anchoring plate 3 sequentially penetrates through the outer tank bottom plate, the cold insulation layer, the concrete ring beam 12 and the secondary bottom plate 2 (a component of the thermal angle protection system) from bottom to top. Since the thermal corner protection system needs to have airtightness, the position where the lower anchor plate 3 penetrates through the secondary base plate 2 must be welded and sealed. However, if the anchoring plate and the secondary base plate 2 are directly welded, large local stress is generated due to the inconsistent deformation among the inner tank wall plate 10, the anchoring plate and the secondary base plate 2 under the low-temperature working condition, the secondary base plate 2 may be damaged, and then the thermal angle protection system fails, and the safety of the storage tank is reduced. Therefore, a casing 4 is usually provided between the anchorage plate and the secondary floor 2 to reduce the local stresses caused by deformation mismatch.

The current common inner tank anchoring device has certain defects:

1) The requirement of the standard specification on the included angle between the anchoring plate and the tank wall is met, the distance between the anchoring plate and the tank wall is smaller, and after the protective cylinder is arranged, the space between the anchoring plate and the tank wall is further reduced, so that the construction difficulty of the T-shaped welding seam (hereinafter referred to as large angle seam) welding operation of the storage tank wall plate and the bottom plate is extremely high.

2) The nondestructive testing of the large angle seam at the position of the protective cylinder is limited by narrow operation space, and currently, permeation testing is mainly adopted, so that the safety of the welding seam at the position is not facilitated to be guaranteed.

3) The protection cylinder needs to be installed after the secondary bottom plate is laid, and the airtightness detection of the fillet weld of the protection cylinder and the protection cylinder sealing plate cannot be carried out, so that the protection cylinder is not beneficial to ensuring the functionality of a thermal angle protection system.

4) The adiabatic nature of anchor is relatively poor, and cold energy accessible anchor externally scatters, has the economic nature of loss storage tank.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a low temperature storage tank anchor has solved the great problem of current anchor to the construction influence.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a low temperature storage tank anchor, includes anchor board and anchor board down, and anchor board buries in advance in the concrete foundation cushion cap down, and lower anchor board passes the tank bottoms composite sheet and is connected with last anchor board, goes up anchor board and is connected with the inner tank wallboard, is equipped with in the tank bottoms composite sheet and protects a section of thick bamboo, protects the cylinder jacket and establishes under on the anchor board, and the upper end of protecting a section of thick bamboo is the opening, and the up end of protecting a section of thick bamboo is not higher than the upper surface of inner tank bottom plate, and the lower extreme of protecting a section of thick bamboo is equipped with protects a section of thick bamboo shrouding, and lower anchor board passes and protects a section of thick bamboo shrouding and is connected with protecting a section of thick bamboo shrouding.

Furthermore, the upper anchoring plate is connected with the lower anchoring plate through a connecting backing plate.

Furthermore, a rib plate is connected between the protecting cylinder sealing plate and the lower anchoring plate.

Furthermore, the lower anchoring plate sequentially penetrates through an outer tank bottom plate, a cold insulation layer, a concrete ring beam and a secondary bottom plate of the tank bottom composite plate from bottom to top.

Furthermore, the cold insulation layer is a foam glass brick.

Furthermore, the protective cylinder is positioned in a cold insulation layer, a concrete ring beam and a secondary bottom plate of the tank bottom composite plate, and the secondary bottom plate is connected with the protective cylinder.

Furthermore, a heat insulating material is arranged between the protective cylinder and the tank bottom composite plate.

Furthermore, a heat insulating material is arranged between the protective cylinder and the cold insulation layer and between the protective cylinder and the tank bottom composite plate and between the protective cylinder and the concrete ring beam.

Furthermore, a heat insulating material is arranged between the protective cylinder and the lower anchoring plate.

Furthermore, the lower end of the lower anchoring plate is connected with the embedded plate, and a rib plate is connected between the lower anchoring plate and the embedded plate.

The utility model has the advantages that:

1) The main body of the anchoring pile casing structure is positioned below the secondary bottom plate, the upper end face of the anchoring pile casing does not exceed the upper surface of the inner tank bottom plate, so that the local stress generated by the inner tank wall plate, the anchoring plate and the secondary bottom plate due to inconsistent deformation is reduced, and a larger operation space is reserved for the welding operation of large-angle seams.

2) The large working space enables the detection of the quality of the large-angle seam welding by adopting the modes of ultrasonic detection and the like to be feasible.

3) The opening of the protective cylinder is upward and is installed before the secondary bottom plate, and the fillet weld of the protective cylinder and the protective cylinder sealing plate can adopt a positive pressure test to carry out air tightness detection.

4) The anchoring protection cylinder is filled with heat-insulating materials for cold insulation, so that the cold energy dissipated through the anchoring device is reduced, and the economical efficiency of the storage tank is improved.

The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; in addition, the utility model can be freely combined between the (non-conflict selection) selections and other selections. The skilled person will understand that there are many combinations, which are the technical solutions to be protected by the present invention, and the embodiments are not exhaustive, according to the prior art and the common general knowledge.

Drawings

Fig. 1 is a front view of a structure of a conventional anchoring device.

Fig. 2 is a side view of a prior art anchor construction.

Fig. 3 is a front view of the structure of the present invention.

Fig. 4 is a side view of the structure of the present invention.

In the figure: 1-upper anchoring plate, 2-secondary bottom plate, 3-lower anchoring plate, 4-pile casing, 5-pile casing sealing plate, 6-rib plate, 7-connecting backing plate, 8-embedded plate, 9-bearing platform, 10-inner tank wall plate, 11-inner tank bottom plate, 12-concrete ring beam, 13-foam glass brick, 14-glass wool, 15-leveling layer and 16-outer tank bottom plate.

Detailed Description

The invention will be further described with reference to the following specific embodiments and the accompanying drawings.

Referring to fig. 3 and 4, the anchoring device for the low-temperature storage tank comprises an upper anchoring plate 1, a lower anchoring plate 3, a pile casing 4, a pile casing closing plate 5 and a heat insulating material, and is used with main structures such as a concrete bearing platform 9, an inner tank wall plate 10, an inner tank bottom plate 11, a tank bottom composite plate and the like, wherein the tank bottom composite plate comprises one or more of a secondary bottom plate 2 (actually having thickness due to smaller thickness shown in a thick line), a concrete ring beam 12, a cold insulation layer (foam glass brick 13), a concrete leveling layer 15 and an outer tank bottom plate 16 (actually having thickness due to smaller thickness shown in a thick line).

The bearing platform 9 is a concrete foundation bearing platform, and a vertical lower anchoring plate 3 is embedded in the bearing platform 9. The lower end of the lower anchoring plate 3 is connected with a horizontal embedded plate 8 in a welding mode, and the embedded plate 8 improves the stability of the lower anchoring plate 3 in a bearing platform 9. Meanwhile, the rib plates 6 are welded between the lower anchoring plate 3 and the embedded plate 8, and the rib plates 6 improve the connection strength between the lower anchoring plate and the embedded plate.

Lower anchor plate 3 passes tank bottoms composite sheet and is connected with last anchor plate 1, goes up anchor plate 1 and is connected with lower anchor plate 3 through connecting backing plate 7, goes up anchor plate 1 and is connected with inner tank wallboard 10, goes up anchor plate 1 and inclines relatively inner tank wallboard 10. The structure realizes the transmission of anchoring force, and the bearing platform 9 is utilized to stabilize the inner tank.

The lower anchoring plate 3 sequentially penetrates through an outer tank bottom plate 16, a leveling layer 15, a cold insulation layer, a concrete ring beam 12 and a secondary bottom plate 2 of the tank bottom composite plate from bottom to top. The upper strata of outer tank bottom plate 16 is screed-coat 15, then screed-coat 15 upper strata is the cold insulation layer, and the cold insulation layer is foam glass brick 13, plays the heat retaining effect. The upper layer of the cold insulation layer is a concrete ring beam 12 and a leveling layer 15, and then the upper layer of the concrete ring beam 12 and the leveling layer 15 is a secondary bottom plate 2. The upper layer of the secondary bottom plate 2 is a leveling layer 15, and finally, the upper layer of the leveling layer 15 is the inner tank bottom plate 11.

A vertical section of thick bamboo 4 that protects that sets up is located cold insulation layer, concrete ring beam 12 and the secondary bottom plate 2 of tank bottoms composite sheet, secondary bottom plate 2 with protect a 4 welded connection, protect 4 covers of a section of thick bamboo and establish under on anchor plate 3, protect the upper end of a section of thick bamboo 4 and be the opening, protect the upper end surface of a section of thick bamboo 4 not higher than inner tank bottom plate 11 upper surface.

Because the upper end surface of the anchoring protective cylinder 4 does not exceed the upper surface of the inner tank bottom plate 11, a larger operation space is reserved for the welding operation of the large angle seam. Meanwhile, the large working space enables the detection of the welding quality of the large-angle seam to be feasible by adopting modes such as ultrasonic detection and the like.

In addition, the opening of the protective cylinder 4 is upward and is installed before the secondary bottom plate 2, and the fillet weld of the protective cylinder 4 and the protective cylinder closing plate 5 can be subjected to air tightness detection by adopting a positive pressure test.

A horizontal protective cylinder sealing plate 5 is welded at the lower end opening of the protective cylinder 4, the lower anchoring plate 3 penetrates through the protective cylinder sealing plate 5, and the lower anchoring plate 3 is connected with the protective cylinder sealing plate 5 in a welding mode. The lower anchoring plate 3 is connected with the protective cylinder closing plate 5 in a welding mode so as to guarantee the air tightness of the thermal angle protection system. And a rib plate 6 is welded between the protecting cylinder sealing plate 5 and the lower anchoring plate 3 and used for improving the connection strength between the protecting cylinder sealing plate and the lower anchoring plate.

And a heat insulating material is arranged between the protective cylinder 4 and the cold insulation layer of the tank bottom composite plate and the concrete ring beam 12, and a heat insulating material is arranged between the protective cylinder 4 and the lower anchoring plate 3 and is glass wool 14. The glass wool 14 is used for filling and insulating the inside and the outside of the protective cylinder 4, so that the cold energy dissipated through the anchoring device is reduced, and the economy of the storage tank is improved.

The utility model discloses a work flow:

1) In the construction stage of the concrete bearing platform 9 of the storage tank, the lower anchoring plate 3 is buried in the concrete bearing platform 9.

2) Before the construction of the storage tank foam glass brick 13 and the concrete ring beam 12, the fillet welds of the rib plate 6, the protective cylinder sealing plate 5 and the lower anchoring plate 3 are welded according to the designed elevation, and then the fillet welds of the protective cylinder 4 and the protective cylinder sealing plate 5 are welded.

3) And (3) performing air tightness detection on the welding seam between the protective cylinder 4 and the protective cylinder sealing plate 5, and performing construction on other storage tank parts such as cold insulation cotton, foam glass bricks 13 and the like inside and outside the protective cylinder 4 after the welding seam is qualified.

4) After the concrete ring beam 12 is constructed, the secondary bottom plate 2 is laid, and fillet welds of the secondary bottom plate 2 and the pile casing 4 are welded.

5) Go up anchor plate 1 and be connected with the jar wall before storage tank hydrostatic test, weld upper anchor plate 1 and anchor plate 3 down after the hydrostatic test. And the whole low-temperature storage tank anchoring device is structurally finished.

The utility model discloses a key point lies in: the anchoring pile casing structure is located below the storage tank secondary bottom plate, construction convenience is improved, the problem that leakage detection of pile casing welding seams is difficult is solved, the heat insulation performance of the structure is optimized, and the overall economy of the storage tank is improved.

The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a low temperature storage tank anchor, includes anchor plate (1) and anchor plate (3) down, its characterized in that: lower anchor plate (3) bury underground in cushion cap (9), lower anchor plate (3) pass tank bottoms composite sheet and are connected with last anchor plate (1), go up anchor plate (1) and be connected with inner tank wallboard (10), be equipped with in the tank bottoms composite sheet and protect a section of thick bamboo (4), protect a section of thick bamboo (4) cover and establish under on anchor plate (3), the upper end of protecting a section of thick bamboo (4) is the opening, the up end of protecting a section of thick bamboo (4) is not higher than the upper surface of inner tank bottom plate (11), the lower extreme of protecting a section of thick bamboo (4) is equipped with protects a section of thick bamboo shrouding (5), lower anchor plate (3) pass and protect a section of thick bamboo shrouding (5) and be connected with protecting a section of thick bamboo shrouding (5).

2. The cryogenic tank anchoring device of claim 1, wherein: the upper anchoring plate (1) is connected with the lower anchoring plate (3) through a connecting base plate (7).

3. The cryogenic tank anchoring device of claim 1 or 2, wherein: and a rib plate (6) is connected between the cylinder protecting sealing plate (5) and the lower anchoring plate (3).

4. The cryogenic tank anchoring device of claim 1, wherein: the lower anchoring plate (3) sequentially penetrates through an outer tank bottom plate (16), a cold insulation layer, a concrete ring beam (12) and a secondary bottom plate (2) of the tank bottom composite plate from bottom to top.

5. The cryogenic tank anchoring device of claim 4, wherein: the cold insulation layer is a foam glass brick (13).

6. The cryogenic tank anchoring device of claim 1, wherein: the protective cylinder (4) is positioned in a cold insulation layer of the composite plate at the bottom of the tank, the concrete ring beam (12) and the secondary bottom plate (2), and the secondary bottom plate (2) is connected with the protective cylinder (4).

7. The cryogenic tank anchoring device of claim 1, wherein: and a heat insulating material is arranged between the protective cylinder (4) and the tank bottom composite plate.

8. The cryogenic tank anchoring device of claim 7, wherein: and heat insulating materials are arranged between the protective cylinder (4) and the cold insulation layer of the tank bottom composite plate and between the protective cylinder and the concrete ring beam (12).

9. Cryogenic tank anchoring device according to claim 1, 7 or 8, characterized in that: and a heat insulating material is arranged between the protective cylinder (4) and the lower anchoring plate (3).

10. The cryogenic tank anchoring device of claim 1, wherein: the lower end of the lower anchoring plate (3) is connected with the embedded plate (8), and a rib plate (6) is connected between the lower anchoring plate (3) and the embedded plate (8).