Construction process of inner tank top plate in low temperature storage tank and construction process of low temperature storage tank

A construction technique and low-temperature storage tank technology, applied in the direction of manufacturing tools, metal processing equipment, auxiliary devices, etc., can solve the problems of difficult control of the construction quality of the inner tank roof, low safety factor, high economic cost, etc., and achieve safe and controllable construction quality , simple method, reasonable process effect

Active Publication Date: 2019-10-08
SINOPEC TENTH CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing low-temperature storage tanks usually construct the outer tank structure and the inner tank part first. For the construction of the inner tank roof, the existing technology mostly uses inflatable jacking for construction. The inflatable jacking construction method requires multiple inflatable jacking seals. The equipment and tooling are constructed on site. After the jacking is completed, it is not only inconvenient to take out, but also needs to build a lot of scaffolding during the jacking process, requiring multiple workers to jack up at the same time. After jacking to the set height, the inner tank For the installation of the roof, the construction part of the inner tank roof is at a high place, which not only makes it difficult to control the construction quality of the inner tank roof, but also poses a great safety hazard
The inventor also found that because of the existing jacking method, the construction period is longer, more workers are needed, the economic cost is higher, and the safety factor is also lower

Method used

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  • Construction process of inner tank top plate in low temperature storage tank and construction process of low temperature storage tank
  • Construction process of inner tank top plate in low temperature storage tank and construction process of low temperature storage tank
  • Construction process of inner tank top plate in low temperature storage tank and construction process of low temperature storage tank

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Embodiment 1

[0050] In a typical embodiment of the present invention, such as figure 1 As shown, a construction process of the inner tank roof of a low-temperature storage tank, the inner tank roof 2 is floated to the installation position by using the tank body hydraulic pressure test, and then installed to the elevation position.

[0051] Specifically include the following:

[0052] The 3 wall panels of the outer tank and the 4 wall panels of the inner tank have been installed, and the position of the first wall panel of the inner and outer tanks is reserved for the entrance and exit gate (temporary gate);

[0053] Before the dome of the outer tank 3 is installed, the tie rod 5 of the roof plate 2 of the inner tank is installed on the dome beam of the outer tank, and is installed together with the dome of the outer tank;

[0054] The bottom of the outer tank, the bottom of the tank and the bottom of the inner tank have been constructed, and the bottom of the outer tank and the bottom of...

Embodiment 2

[0096] The invention also provides a low-temperature storage tank construction process, such as Figure 5 shown, including the following:

[0097] The inner and outer tank bottom plates are prefabricated, and the outer edge plates are laid and welded;

[0098] The laying and welding of the outer middle plate, and the welding of the first and second rings of the outer tank wall plate at the same time;

[0099] Three seam assembly welding at the bottom of the outer tank;

[0100] Construction of inner tank bottom ring beam;

[0101] Welding of inner tank bottom edge;

[0102] Welding of the first and second ring wall panels of the inner tank;

[0103] The pipe walls of the inner and outer tanks are prefabricated, and the inner and outer tanks are assembled and welded alternately except for the first and second circles of wall panels;

[0104] Prefabrication of tank roof pressure ring, installation of tank top pressure ring and tank inner pipe;

[0105] The melon slices on ...

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Abstract

The invention discloses a construction process of an inner tank top plate in a low temperature storage tank and a construction process of the low temperature storage tank. The construction processes solve the problems that in the prior art, scaffolding needs to be erected for jacking of an inner tank top plate, and assembling of the inner tank top plate needs to be carried out at a high place. Theconstruction processes have the beneficial effects that the construction processes are reasonable, and the construction quality is safe and controllable. According to the scheme, the construction process of the inner tank top plate in the low temperature storage tank adopts a tank body hydraulic test to float the inner tank top plate to the installation position, and then the inner tank top plateis installed to the elevation position; and a lifting part is arranged, the lifting part is connected with an outer tank top plate and the inner tank top plate, and therefore the inner tank top plateis installed to the elevation position.

Description

technical field [0001] The invention relates to the field of construction of low-temperature storage tanks, in particular to a construction process for an inner tank roof of a low-temperature storage tank and a construction process for a low-temperature storage tank. Background technique [0002] Existing low-temperature storage tanks usually construct the outer tank structure and the inner tank part first. For the construction of the inner tank roof, the existing technology mostly uses inflatable jacking for construction. The inflatable jacking construction method requires multiple inflatable jacking seals. The equipment and tooling are constructed on site. After the jacking is completed, it is not only inconvenient to take out, but also needs to build a lot of scaffolding during the jacking process, requiring multiple workers to jack up at the same time. After jacking to the set height, the inner tank For the installation of the roof, the construction part of the inner tan...

Claims

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Application Information

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IPC IPC(8): B23K31/02B23K37/00
CPCB23K31/02B23K37/00
Inventor 苗晨齐彦涛张宝李永刚徐占江李春红
Owner SINOPEC TENTH CONSTR
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