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, re

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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Example Embodiment

[0049] Example 1

[0050] In a typical implementation of the present invention, such as figure 1 As shown, a construction process for the inner tank roof of a low-temperature storage tank uses a tank hydrostatic test to float the inner tank roof 2 to an installation position, and then install it to an elevation position.

[0051] Specifically include the following:

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

[0053] Before installing the outer tank 3 dome, install the tie rod 5 of the inner tank top plate 2 to the outer tank dome beam and install it together with the outer tank dome;

[0054] The outer tank bottom, tank bottom cold preservation and inner tank bottom have all been completed, and the outer tank bottom plate and the inner tank bottom plate have been vacuum tested;

[0055] The prefabricated inner tank top plate 2 is asse...

Example Embodiment

[0095] Example 2

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

[0097] Prefabricate the inner and outer tank bottom plates, and lay and weld the outer edge plates;

[0098] Laying and welding of outer and middle panels, and welding of the first and second rings of outer tank at the same time;

[0099] Three seam welding of outer tank bottom;

[0100] Construction of inner tank bottom ring beam;

[0101] Group welding of inner tank bottom edge;

[0102] Group welding of the first and second rings of the inner tank;

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

[0104] Prefabrication of tank top pressure ring, tank top pressure ring and tank internal pipes for installation;

[0105] Prefabricated melon slices on the top of the tank and installed on the top of the outer tank;

[0106]...

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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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