CN-121974278-A - Integral fixing device for gas tank top structure and floating method

CN121974278ACN 121974278 ACN121974278 ACN 121974278ACN-121974278-A

Abstract

The invention provides a gas tank top structure integral fixing device and a floating method, which belong to the technical field of gas tank installation and comprise a main body plate, a lower shaft seat, a base, an upper shaft seat, a tank top dragging seat, a positioning plate, a fixing hook and an anti-rotation device; the anti-rotation device comprises a main body plate, a positioning plate, a fixing hook, a piston guide wheel bracket, an upper shaft seat, a cabinet top dragging seat, a cabinet top structure edge ring beam, a fixing hook and a fixing force point for the fixing hook, wherein the lower portion of the main body plate is connected with the lower shaft seat through a pin shaft, the lower shaft seat is fixed on the base, the base is fixed on a main beam at the top of the piston guide wheel bracket, the upper shaft seat is arranged on the upper portion of the main body plate, two ends of the anti-rotation device are respectively connected with the upper shaft seat and the cabinet top dragging seat, the cabinet top dragging seat is connected with the cabinet top structure edge ring beam, the fixing hook is arranged between the two main body plates through the pin shaft, the fixing plate provides a fixing force point for the fixing hook, the device can maintain stability of a construction process in high-altitude operation, prevent the cabinet top from deforming or rotating in a floating process, and provide reliable guarantee for stability of an integral structure when the cabinet top is floating.

Inventors

LIU JIANWEI
LI GUOFENG
ZHANG KUN
GUAN WENQING
LIU JIANFENG

Assignees

中国三冶集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260305

Claims (8)

1. The integral fixing device for the gas tank top structure is characterized by comprising a main body plate, a lower shaft seat, a base, an upper shaft seat, a tank top dragging seat, a locating plate, a fixing hook and an anti-rotation device, wherein the lower portion of the main body plate is connected with the lower shaft seat through a pin shaft, the lower shaft seat is fixed on the base, the base is fixed on a main beam at the top of a piston guide wheel bracket, the upper shaft seat is arranged on the upper portion of the main body plate, two ends of the anti-rotation device are respectively connected with the upper shaft seat and the tank top dragging seat, the tank top dragging seat is connected with an edge ring beam of the tank top structure, the locating plate is arranged on a stand column, the fixing hook is arranged between the two main body plates through a pin shaft, the locating plate provides a fixing force point for the fixing hook, the anti-rotation device comprises a frame, anti-rotation guide wheels and radial guide wheels, two ends of the frame are respectively connected with the upper shaft seat and the tank top dragging seat, two anti-rotation guide wheels and one radial guide wheel are arranged on the frame, and the two anti-rotation guide wheels are respectively attached to a flange plate and a web plate of the stand column.
2. The integral fixing device for the top structure of the gas tank according to claim 1, wherein the fixing hook is rotatably connected with the main body plate through a pin shaft, and two ends of the pin shaft are fixed through cotter pins.
3. The integral fixing device for the gas tank top structure is characterized by further comprising a reinforcing core plate and a reinforcing plate, wherein the reinforcing core plate is arranged between the two main body plates and is fixed through high-strength bolts, the reinforcing plate is arranged on the outer side of the main body plates, and the reinforcing plate and the main body plates are of an integral structure.
4. The integral fixing device for the gas tank top structure, according to claim 3, is characterized by further comprising a reinforcing beam and a reinforcing rod, wherein the reinforcing beam is connected with the base, and two ends of the reinforcing rod are respectively connected with the reinforcing beam and the main body plate.
5. The device for integrally fixing the top structure of a gas tank according to claim 4, further comprising a diagonal fixing rod, wherein two adjacent main body plates are connected through the diagonal fixing rod, so that the plurality of fixing devices form an integral circular structure.
6. The method for integrally fixing and lifting the gas tank top structure is based on the device for integrally fixing the gas tank top structure according to claim 5, and is characterized by comprising the following steps: S1, cleaning the top of a piston in a cylindrical structure of a gas tank, and providing a flat working surface for installation of the tank top structure; s2, manufacturing a fixing device, and uniformly mounting a plurality of fixing devices on the top of the piston along the circumferential direction to form an integral circular structure; S3, installing positioning plates at preset height positions of the stand columns to ensure that all the positioning plates are positioned on the same horizontal plane, wherein the positioning plates are used for providing fixed force points for the fixed hooks; S4, inflating the inside of the piston to enable the piston to drive the cabinet top structure and the fixing device to float upwards synchronously, stopping inflating and discharging air in the piston when the position of the fixed hook mouth on the fixing device passes through the cross section of the upper part of the positioning plate, and enabling the piston to slowly descend until the fixed hook mouth is in stable contact with the cross section of the upper part of the positioning plate, so that temporary fixing of the cabinet top structure is realized; S5, installing side plates with corresponding heights in the floating stage of the top space of the piston, and welding and polishing welding seams of the side plates to form a sealed circular cylinder between the side plates; S6, removing the positioning plate, moving to the next preset height, reinstalling, continuously inflating the interior of the piston, enabling the piston to move upwards along the newly completed cylinder, and repeating the operations of the steps S4-S5; And S7, after the cabinet top structure is lifted to the designed height, connecting and fixing the cabinet top ring beam with the upright posts, and then dismantling all positioning plates and fixing devices, so that the installation construction of the residual side plates and the cabinet top ring plate is needed to be completed, namely, the integral fixed lifting of the cabinet top structure of the gas cabinet is completed.
7. The method for integrally fixing and lifting the top structure of the gas tank according to claim 6, wherein in the step S4, the fixing hook is rotatably connected with the main body plate through a pin shaft, and the fixing hook automatically resets by gravity in the descending process of the piston, so that the hook mouth is stably hung on the cross section of the upper part of the positioning plate.
8. The method for integrally fixing and lifting the top structure of the gas tank according to claim 6, wherein in the step S2, the step of manufacturing the fixing device comprises the steps of: S1, paving a reinforcing plate on a flat site, paving a main body plate on the reinforcing plate in alignment with bolt holes, installing a fixed hook at a corresponding position on the top of the main body plate, arranging a reinforcing core plate at the lower part, and paving another main body plate and the reinforcing plate on the reinforcing core plate; s2, fixedly connecting the lower reinforced core plate and the main body plate into a whole through high-strength bolts; S3, after the assembly is completed, mounting a fixing bolt and a pin shaft according to the positions of the bolt holes, and fixing by using cotter pins; and S4, installing an anti-rotation device above the upper shaft seat, wherein two anti-rotation guide wheels and one radial guide wheel of the anti-rotation device are respectively attached to the flange plate and the web plate of the upright post.

Description

Integral fixing device for gas tank top structure and floating method Technical Field The invention belongs to the technical field of installation of gas tanks, and particularly relates to a gas tank top structure integral fixing device and a floating method. Background The gas cabinet is a key device for storing and adjusting gas in the industries of metallurgy, chemical industry, petroleum, natural gas and the like, and realizes the storage and release of gas by the up-and-down movement of a piston in a cylindrical cabinet body. The current construction method of the gas tank mainly comprises a high-altitude spare part method, an integral floating method, an integral lifting method and the like. However, in the conventional construction process, the cabinet top structure is usually installed and welded at high altitude. Because the cabinet top plate is thinner and the welding workload of the whole structure is large, the self weight of the structure and the construction load impact are obvious under the high-altitude operation state, the welding process is difficult to keep balanced, the welding shrinkage is uneven, and the deformation of the cabinet top structure is difficult to control. After welding, the cabinet top structure is extremely easy to generate longitudinal shrinkage deformation, so that the radial dimension deviation is caused. The deviation forces the cylinder to deform when the cylinder is subsequently in butt joint with the lower cylinder, so that the smoothness and the tightness of the operation of the piston are affected, and the structural stability and the effective gas storage capacity of the gas holder are reduced. In addition, when the integral buoyancy lift method is adopted for construction, the structure of the cabinet top needs to rise synchronously along with the piston, but in the existing method, the cabinet top lacks effective guiding and rotation preventing constraint in the buoyancy lift process, rotation or deviation is easily generated due to air flow disturbance or uneven stress, if the cabinet top rotates, temporary fixed points are not only invalid, structural instability is caused, even safety accidents are caused, and the reliability and safety of the construction process are seriously affected. Therefore, there is a need for a fixing device that can reduce the risk of overhead operation, avoid deformation or rotation of the roof structure during the lifting process, and ensure the construction quality and safety. Disclosure of Invention Based on the technical problems, the invention aims to provide the integral fixing device and the floating method for the gas tank top structure, which can keep the stability of the construction process in the high-altitude operation, prevent the deformation or rotation of the tank top in the floating process and provide reliable guarantee for the stability of the integral structure during the floating of the tank top. The specific technical scheme is as follows: The integral fixing device for the gas tank top structure comprises a main body plate, a lower shaft seat, a base, an upper shaft seat, a tank top dragging seat, a positioning plate, a fixing hook and an anti-rotation device, wherein the lower part of the main body plate is connected with the lower shaft seat through a pin shaft, the lower shaft seat is fixed on the base and is fixed on a main beam at the top of a piston guide wheel bracket, the upper shaft seat is arranged at the upper part of the main body plate, two ends of the anti-rotation device are respectively connected with the upper shaft seat and the tank top dragging seat, the tank top dragging seat is connected with an edge ring beam of the tank top structure, the positioning plate is arranged on a stand column, the fixing hook is arranged between the two main body plates through the pin shaft, the positioning plate provides a fixing force point for the fixing hook, the anti-rotation device comprises a frame, anti-rotation guide wheels and a radial guide wheel, two ends of the frame are respectively connected with the upper shaft seat and the tank top dragging seat, and the two anti-rotation guide wheels and the radial guide wheel are respectively attached to a flange plate and a web of the stand column. In addition, the integral fixing device for the gas tank top structure in the technical scheme provided by the invention can also have the following additional technical characteristics: In the technical scheme, the fixed hooks are rotationally connected with the main body plate through the pin shafts, and two ends of the pin shafts are fixed through cotter pins. The technical scheme further comprises a reinforcing core plate and a reinforcing plate, wherein the reinforcing core plate is arranged between the two main body plates and fixed through high-strength bolts, the reinforcing plate is arranged on the outer side of the main body plates, and the reinforcing plate and the main body plates are of an integr