CN219604994U

CN219604994U - Natural gas storage tank gas jacking system

Info

Publication number: CN219604994U
Application number: CN202320281706.4U
Authority: CN
Inventors: 张贵州; 张尧
Original assignee: Nanjing Yuncheng Smart Technology Co ltd
Current assignee: Nanjing Yuncheng Smart Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-29
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a natural gas storage tank gas jacking system, which comprises a tank body, a bearing ring, a dome steel structure, a steel wire rope and a pulley block, wherein the dome steel structure is arranged on the inner bottom surface of the tank body and the top of the tank body, the bearing ring is arranged in the center of the dome steel structure, the steel wire rope is arranged on the bearing ring, the installation position of the steel wire rope is vertically projected onto a dome plate of the dome steel structure, the pulley block is arranged on the top of the tank body after the steel wire rope passes through the dome plate, a pressurizing device is arranged at the bottom of the tank body, and the pressurizing device is used for pressurizing a sealed space formed by the tank body by feeding low-pressure air. The sealed space formed by the tank body is pressurized by using the pressurizing equipment to be fed with low-pressure air, the design outputs torque reliably, outputs in multiple positions, expands the application range, is suitable for more occasions, and solves the defects of single-shaft cantilever output of the steering engine and the defect of insufficient functions caused by single position of the output end in the prior art.

Description

Natural gas storage tank gas jacking system

Technical Field

The utility model relates to the field of construction control of large LNG storage tanks, in particular to a natural gas storage tank gas jacking system.

Background

The dome and the suspended ceiling of the large LNG normal pressure storage tank generally adopt an air jacking process, a relative sealing space is formed between the dome and the tank wall of the outer tank, a certain amount of low-pressure air is input, so that the dome steadily rises to the designed height according to a preset path under the condition of overcoming dead weight and friction force between the dome and the tank wall of the outer tank, and the dome is connected with a dome bearing ring.

In order to ensure the balance of the vault in the jacking process, the wind pressure and the wind quantity input by the blower must be strictly controlled, and the servo power structure of the blower is quite important. Most of the existing servo mechanisms are single-shaft cantilever output, single-position output and limited in application range.

Disclosure of Invention

The utility model provides a natural gas storage tank gas jacking system for solving the problem of single-shaft cantilever output.

The utility model provides the following technical scheme:

the natural gas storage tank air jacking system comprises a tank body, a bearing ring, a dome steel structure, a steel wire rope and a pulley block, wherein the dome steel structure is arranged on the inner bottom surface of the tank body and the top of the tank body, the bearing ring is arranged at the center of the dome steel structure, the steel wire rope is arranged on the bearing ring, the installation position of the steel wire rope is vertically projected onto a dome plate of the dome steel structure, the pulley block is arranged at the top of the tank body after the steel wire rope passes through the dome plate, a pressurizing device is arranged at the bottom of the tank body, and the pressurizing device is used for pressurizing low-pressure air sent into a sealing space formed by the tank body.

Further, the pressurizing device consists of a blower and a servo power mechanism.

Further, servo power mechanism includes left casing, well casing, right casing, driving motor, output switching axle, gear train and left output shaft, driving motor assembles in the interior lower extreme of well casing, and the driving motor right-hand member is connected with the gear train, the gear train is installed inside right casing, output switching axle assembles in the inside upper end of gear train, output switching axle connects right output shaft, and output switching axle passes through the bearing and be connected with right casing, left casing internally mounted left output shaft, left output shaft is located right output shaft left side.

Further, an angle feedback device is arranged in the left shell.

Furthermore, an arc boss is arranged on the lower end face of the middle shell, and a dovetail groove is formed in the right position of the lower end face of the arc boss.

Compared with the prior art, the utility model has the beneficial effects that: the sealed space formed by the tank body is pressurized by using the pressurizing equipment to be fed with low-pressure air, the design outputs torque reliably, outputs in multiple positions, expands the application range, is suitable for more occasions, and solves the defects of single-shaft cantilever output of the steering engine and the defect of insufficient functions caused by single position of the output end in the prior art.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

FIG. 2 is a schematic diagram of a servo power mechanism according to the present utility model.

FIG. 3 is a schematic cross-sectional view of a servo power mechanism of the present utility model.

FIG. 4 is an assembled cross-sectional schematic view of the servo power mechanism of the present utility model.

In the figure: 100. a tank body; 200. a bearing ring; 300. a dome steel structure; 400. a wire rope; 500. pulley block; 600. a pressurizing device 700, a sealing structure;

1. the device comprises a left shell, a middle shell, a 3, a right shell, a 4, a driving motor, a 5, a driving control board, a 6, an angle feedback device, a 7, an output switching shaft, a 8, a gear set, a 9, a dovetail groove, a 10, an arc boss, a 11, a left output shaft, a 12, a bearing, a 13 and a right output shaft.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the natural gas storage tank air jacking system of the present utility model, the balancing system, the pressurizing device and the sealing structure, the balancing system comprises a tank body 100, a pressure bearing ring 200, a dome steel structure 300, a steel wire rope 400 and a pulley block 500, the dome steel structure 300 is arranged on the inner bottom surface of the tank body 100, the pressure bearing ring 200 is arranged in the center of the dome steel structure 300, the steel wire rope 400 is mounted on the pressure bearing ring 200, the mounting position of the steel wire rope 400 is vertically projected onto the dome plate of the dome steel structure 300, the pulley block 500 is mounted on the top of the tank body 100 after the steel wire rope 400 passes through the dome plate, the steel wire rope 500 reaches the pulley block on the opposite rail beam through the pulley block, the pressurizing device is arranged on the bottom of the tank body 100, and the pressurizing device is used for pressurizing a large amount of low pressure air into the sealing space formed by the tank body 100. The balancing system is a device for controlling the dome angle and the level in the air lift process by utilizing the tension of the steel wire rope. The stability of air pressure is ensured by the sealing structure 700 between the concrete wall and the dome steel edge.

The purpose of the sealing structure 700 is to install sealing material to form a sealed space between the vault and the concrete tank wall, and reduce the loss of air volume during the top blowing process. The sealing material can be sealed by sheet iron, fireproof cloth, adhesive tape, etc.

The pressurizing device 600 is composed of a blower and a servo power mechanism, and provides power for the air pressure jack.

The air jacking technology principle is that an external pressurizing device is used, a blower is used for pressurizing a sealed space formed by a dome structure, a concrete outer wall and a platform by a large amount of low-pressure air, so that the pressure difference is formed between the sealed space and the external space, and after the total buoyancy of the air is greater than the weight of a dome steel structure and friction resistance is overcome, the dome generates floating displacement by utilizing the pressure difference, and is jacked up to the top from the bottom of a storage tank.

In order to ensure the balance of the vault in the jacking process, the air pressure and the air quantity input by the blower are strictly controlled, the servo power structure of the blower is quite important, and the accurate output of the operation angle is particularly important.

As shown in fig. 2, 3 and 4, the servo power mechanism comprises a left shell 1, a middle shell 2, a right shell 3, a driving motor 4, a driving control board 5, an angle feedback device 6, an output switching shaft 7, a gear set 8, a dovetail groove 9, an arc boss 10 and a left output shaft 11, wherein the driving motor 4 is assembled at the lower end of the inner part of the middle shell 2, the right end of the driving motor 4 is connected with the gear set 8, the gear set 8 is arranged in the right shell 3, the output switching shaft 7 is assembled at the upper end of the inner part of the gear set 8, the output switching shaft 7 is connected with a right output shaft 13, the output switching shaft 7 is connected with the right shell 3 through a bearing 12, the left output shaft 11 is assembled in the left shell 1 at the left end of the angle feedback device 6, and the left output shaft 11 is positioned at the left side of the right output shaft 13.

The drive control board 5 is fitted inside the left housing 1 on the lower side of the angle feedback device 6.

The lower end surface of the middle shell 2 is fixed with an arc boss 10, and a dovetail groove 9 is arranged at the right part of the lower end surface of the arc boss 10.

The specific embodiment is as follows: the circuit between driving motor 4 and the external power supply is put through, driving motor 4 work drives gear train 8 operation, gear train 8 operation drives output changeover axle 7 rotation, output changeover axle 7 rotates and drives left output shaft 11 and right output shaft 13 rotation, thereby realize power take off, angle feedback ware 6 rotates along with output changeover axle 7 simultaneously, and with the angle information transmission of rotation in-process to drive control panel 5, drive control panel 5 receives the information and feeds back, thereby control driving motor 4 drives output changeover axle 7 accurate output running angle through gear train 8, then control left output shaft 11 and right output shaft 13 accurate output running angle, this design has realized multiaxis output. The design solves the defects of single-shaft cantilever output and insufficient functions caused by single output end position in the prior art.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Natural gas storage tank gas jacking system, its characterized in that: the balance system comprises a tank body (100), a bearing ring (200), a dome steel structure (300), a steel wire rope (400) and a pulley block (500), wherein the dome steel structure (300) is arranged on the inner bottom surface of the tank body (100) and the top of the tank body, the bearing ring (200) is arranged at the center of the dome steel structure (300), the steel wire rope (400) is arranged on the bearing ring (200), the installation position of the steel wire rope (400) is vertically projected onto the dome plate of the dome steel structure (300), the pulley block (500) is arranged at the top of the tank body (100) after the steel wire rope (400) passes through the dome plate, the pressurizing equipment (600) is arranged at the bottom of the tank body (100), and the pressurizing equipment (600) is used for pressurizing the sealed space formed by the tank body (100) by feeding low-pressure air.

2. The natural gas tank gas lift system of claim 1, wherein: the pressurizing device (600) is composed of a blower and a servo power mechanism.

3. The natural gas tank gas lift system of claim 2, wherein: the servo power mechanism comprises a left shell (1), a middle shell (2), a right shell (3), a driving motor (4), an output switching shaft (7), a gear set (8) and a left output shaft (11), wherein the driving motor (4) is assembled at the lower end of the inner part of the middle shell (2), the right end of the driving motor (4) is connected with the gear set (8), the gear set (8) is installed inside the right shell (3), the output switching shaft (7) is assembled at the upper end of the inner part of the gear set (8), the output switching shaft (7) is connected with a right output shaft (13), the output switching shaft (7) is connected with the right shell (3) through a bearing (12), the left output shaft (11) is installed inside the left shell (1), and the left output shaft (11) is located at the left side of the right output shaft (13).

4. A natural gas tank gas lift system as claimed in claim 3 wherein: the left shell (1) is internally provided with an angle feedback device (6).

5. A natural gas tank gas lift system as claimed in claim 3 wherein: the lower end face of the middle shell (2) is provided with an arc boss (10), and the right part of the lower end face of the arc boss (10) is provided with a dovetail groove (9).