Search

CN-224211665-U - Balance system for tank steel dome gas jacking

CN224211665UCN 224211665 UCN224211665 UCN 224211665UCN-224211665-U

Abstract

The utility model provides a balance system for lifting a steel dome of a storage tank, which comprises a balance component, wherein the upper end part of the balance component is fixed at the upper end of the storage tank, the lower end of the balance component is movably connected with the lower end part of the dome body and used for guiding and balancing the dome body, a plurality of first tank bottom embedded parts are arranged at the bottom of the storage tank in an annular structure, and a plurality of first movable pulley blocks distributed in the annular structure are arranged on a steel beam in the lower end of the dome body.

Inventors

  • FAN ZIHANG
  • CHEN HAI
  • CHEN BAIMING
  • CHEN SIDONG
  • HOU SHENGQI
  • YANG CHENGXIN
  • WANG PANPAN
  • WANG JIAMIN
  • MA BIN
  • Hao Jundi
  • SHAO ZHENGZHENG
  • ZHOU JINSHUN
  • DONG YIZHONG
  • LIU DONGDONG
  • YAN HAIBIN
  • Luo Xujie
  • TANG CAILIN

Assignees

  • 浙江浙能六横液化天然气有限公司

Dates

Publication Date
20260508
Application Date
20250623

Claims (8)

  1. 1. The balance system for the gas jacking of the steel dome of the storage tank comprises a balance assembly (300), and is characterized in that the upper end part of the balance assembly (300) is fixed at the upper end of the storage tank (100), and the lower end of the balance assembly (300) is movably connected with the lower end part of the dome body (200) and used for guiding and balancing the dome body (200); The utility model provides a storage tank, including storage tank (100) bottom is annular structure and is provided with a plurality of tank bottom built-in fitting (110) and tank bottom built-in fitting two, install a plurality of running block one (210) that are annular structure and distribute on the inside girder steel of lower extreme of dome body (200), install a plurality of running block two (220) that are annular structure and distribute on the inside girder steel of lower extreme of dome body (200), balance subassembly (300) including support one (310), support two (340), a plurality of support one (310) are annular structure with support two (340) and fix on the wall body at storage tank (100) top, and each support one (310) all with the upper end activity butt of a wire rope one (320), each support two (340) all with the upper end activity butt of a wire rope two (330).
  2. 2. The balance system for tank steel dome gas jacking of claim 1, wherein the number of the first tank bottom embedded parts (110) and the second tank bottom embedded parts is the same as the sum of the first steel wire ropes (320) and the second steel wire ropes (330), and the number of the first tank bottom embedded parts (110) and the second tank bottom embedded parts is the same as the sum of the first brackets (310) and the second brackets (340).
  3. 3. A tank steel dome air jacking balance system as set forth in claim 2 wherein a first tank bottom embedment (110) is disposed directly below each first bracket (310) and a second tank bottom embedment is disposed directly below each second bracket (340) and below the bottom of the tank (100).
  4. 4. The balance system for tank steel dome gas lift of claim 3, wherein the number and distribution positions of the first movable pulley blocks (210) are matched with the number and distribution positions of the first steel wire ropes (320), and the number and distribution positions of the second movable pulley blocks (220) are matched with the number and distribution positions of the second steel wire ropes (330).
  5. 5. The balance system for tank steel dome gas lifting, as set forth in claim 4, wherein the number and distribution positions of the first movable pulley blocks (210) are matched with the number and distribution positions of the first tank bottom embedded parts (110), and the number and distribution positions of the second movable pulley blocks (220) are matched with the number and distribution positions of the second tank bottom embedded parts.
  6. 6. The balance system for tank steel dome gas jacking, as set forth in claim 1, wherein a plurality of through holes are vertically formed in the upper surface edge of the dome body (200) in a downward penetrating manner and used for giving way to the first steel wire rope (320) and the second steel wire rope (330), the number of the through holes is the same as the sum of the first steel wire rope (320) and the second steel wire rope (330), the setting positions of the two through holes are mutually matched, a guide sleeve is arranged in each through hole, and lubricating oil is pre-smeared on the inner wall of each through hole.
  7. 7. The balance system for tank steel dome air jacking, as set forth in claim 1, wherein the first bracket (310) and the second bracket (340) are metal brackets with T-shaped structures, and the upper ends of the first steel wire rope (320) and the second steel wire rope (330) respectively span the first bracket (310) and the second bracket (340) and are fixedly connected with the outer wall of the upper end of the tank (100).
  8. 8. The balance system for tank steel dome air jacking, as set forth in claim 7, characterized in that a fixed pulley block is fixed on the inner side and the outer side of the upper ends of the first bracket (310) and the second bracket (340) respectively for guiding the first steel wire rope (320) and the second steel wire rope (330), and a steel wire rope clamp, a tension meter and an open screw are sequentially installed on the upper ends of the first steel wire rope (320) and the second steel wire rope (330) and the first bracket (310) and the second bracket (340) from top to bottom for limiting, measuring and fixing the first steel wire rope (320) and the second steel wire rope (330).

Description

Balance system for tank steel dome gas jacking Technical Field The utility model belongs to the technical field of dome gas jacking, and particularly relates to a balance system for tank steel dome gas jacking. Background The existing tank steel dome gas jacking technology has a plurality of key defects in the aspect of a balance system, and mainly solves the problems of insufficient stability, low synchronization precision, delayed emergency response and the like in the jacking process. The defects are mainly caused by moment unbalance caused by uneven air pressure distribution, when the diameter of a dome exceeds 40 meters, a traditional multi-air-bag system can generate lateral bias load force exceeding 15 tons due to pressure drop difference of pipelines (which can reach 0.05-0.1 MPa), dome rotation deflection is caused (maximum record reaches 32 mm), meanwhile, response delay of 30-50 seconds exists in mechanical balance beam adjustment, the inclination angle of the dome is possibly over-limited (> 1.5 degrees) when sudden gusts (> 8 m/s) are encountered, and sealing ring tearing accidents are caused seriously. The common improvement scheme of industry includes increasing balancing weight balancing system (8 tons of balancing weight are arranged in each 10m diameter) and upgrading to electrohydraulic servo control system, the former can reduce the unbalanced load risk by 30%, but the total weight of the jacking structure is increased by 25%, the energy efficiency is obviously reduced (the gas consumption is increased by 40%), the latter can increase the synchronization accuracy to +/-3 mm through PID algorithm, but the complexity of the system is greatly increased, only single-point failure of the servo valve can cause full line shutdown, and the maintenance cost is increased by more than 3 times, so that it is hopeful to design a dome gas jacking balancing system with a novel structure, and the problem is solved. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a balance system for lifting the steel dome gas of a storage tank, which solves the problems in the prior art. The balance system for the gas jacking of the steel dome of the storage tank comprises a balance component, a gas pump and a gas pump, wherein the upper end part of the balance component is fixed at the upper end of the storage tank, and the lower end of the balance component is movably connected with the lower end part of the dome body and used for guiding and balancing the dome body; The bottom of the storage tank is provided with a plurality of first tank bottom embedded parts and second tank bottom embedded parts in an annular structure, a plurality of first movable pulley blocks distributed in an annular structure are mounted on the inner steel beam at the lower end of the dome body, a plurality of second movable pulley blocks distributed in an annular structure are mounted on the inner steel beam at the lower end of the dome body, the balance component comprises a first bracket and a second bracket, the first bracket and the second bracket are fixed on a wall body at the top of the storage tank in an annular structure, each first bracket is movably abutted with the upper end of one steel wire rope, each second bracket is movably abutted with the upper end of one steel wire rope, 24 groups of steel wire ropes are arranged in total in actual use, the first steel wire rope and the second steel wire rope are in one group, namely 24 steel wire ropes are symmetrically arranged, the bearing rings of the top of the tank are marked with a total station according to 0 degree, 90 degree, 180 degree and 270 degree, the positions of the first bracket and the second bracket are arranged on the bearing rings of the first bracket, and the second bracket are arranged at a distance of one bracket, and each adjacent bearing ring is between two brackets and 5.5 degrees. As a preferable implementation mode, the number of the first tank bottom embedded parts and the second tank bottom embedded parts is the same as the sum of the first steel wire rope and the second steel wire rope, and the number of the first tank bottom embedded parts and the second tank bottom embedded parts is the same as the sum of the first bracket and the second bracket. As a preferable implementation mode, a first tank bottom embedded part is arranged at the bottom of the storage tank under each first bracket, and a second tank bottom embedded part is arranged at the bottom of the storage tank under each second bracket. As a preferred embodiment, the number and the distribution position of the first movable pulley blocks are matched with those of the first steel wire ropes, and the number and the distribution position of the second movable pulley blocks are matched with those of the second steel wire ropes. As a preferred implementation mode, the number and the distribution position of the first movable pulley blocks