Automatic rotating tool for LNG (liquefied natural gas) low-temperature pump pool

Abstract

The utility model provides an automatic rotating tool for an LNG (Liquefied Natural Gas) low-temperature pump pool, which relates to the technical field of welding processing and comprises a supporting channel steel and a pump pool bottom plate tool, bearing mounting plates are arranged on the top surface of the supporting channel steel and the bottom surface of the pump pool bottom plate tool, guide bearings are arranged on the surface circumferences of the bearing mounting plates in a bolting manner, and a central gear is arranged between the guide bearings; a central connecting shaft is arranged between the adjacent bearing mounting plates in a penetrating mode, a driving gear is meshed with the side face of the central gear, a driving motor is arranged at the bottom of the driving gear, a remote controller body is arranged on the surface of the supporting channel steel, and the driving gear meshed with the central gear drives the central gear to rotate under driving of the driving motor; the whole pump pool bottom plate tool is driven to rotate through the guide bearing, so that the whole pump pool bottom plate can automatically rotate during welding, starting and stopping and the rotating speed of the driving motor are controlled, the direction and the speed of the whole pump pool bottom plate tool are automatically controlled, tedious operation caused by manual position moving is avoided, the structure A is in the southeast, and control and operation are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of welding processing, in particular to an automatic rotating tooling for an LNG cryogenic pump pool. Background Technique

[0002] In the LNG liquefied natural gas industry, cryogenic pump pools are one of the core facilities for storing and transporting LNG. These pump pools usually contain complex pipeline systems and pump body structures. Among them, the pump pool bottom plate is a key component for supporting and installing the pump body and pipelines. The manufacturing and installation processes of the pump pool bottom plate are crucial for the overall performance and safety of the pump pool. Traditional toolings for LNG cryogenic pump pool bottom plates are often relatively simple in design, and mostly adopt fixed or manually adjustable installation methods. These methods have many inconveniences during the welding, assembly, and debugging processes of the pump pool bottom plate. First of all, the fixed tooling cannot adapt to the welding requirements of the pump pool bottom plate at different angles and positions, resulting in low welding efficiency and difficult-to-guarantee quality. Secondly, although the manually adjustable tooling can solve the angle adjustment problem to a certain extent, it is complex to operate, has a large labor intensity, and has potential safety hazards.

[0003] In the prior art, the old version of the tooling is equivalent to a frame, which requires welders to rotate along with the welding progress, affecting the welding progress and increasing energy and labor consumption. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantage that the welding tooling for cryogenic pumps in the prior art is not easy to adjust, and an automatic rotating tooling for an LNG cryogenic pump pool is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: an automatic rotating tooling for an LNG cryogenic pump pool, including a support channel steel and a pump pool bottom plate tooling. Bearing mounting plates are provided on the top surface of the support channel steel and the bottom surface of the pump pool bottom plate tooling. Guide bearings are bolted circumferentially on the surface of the bearing mounting plates. A central gear is provided between adjacent guide bearings, and the surface of the central gear abuts against the surface of the guide bearings. A central connecting shaft penetrates between adjacent bearing mounting plates. A driving gear is meshed on the side surface of the central gear, and a driving motor is vertically connected to the bottom of the driving gear. A remote control main body is provided on the surface of the support channel steel.

[0006] Preferably, a reinforcing plate is provided at the center position on the top surface of the pump pool bottom plate tooling. The reinforcing plate and the pump pool bottom plate tooling are integrally formed, and the edges of the surface of the reinforcing plate are rounded.

[0007] Preferably, multiple groups of the support channel steels are circumferentially distributed, and movable universal wheels are bolted to the bottom ends of the support channel steels away from the center position.

[0008] Preferably, the bearing mounting plate is connected to the working surface of the pump sump bottom plate and the surface of the supporting channel steel by bolts. Adjacent bearing mounting plates are of the same size, and the vertical center lines of adjacent bearing mounting plates coincide with each other.

[0009] Preferably, the central connecting shaft is key-connected to the bearing mounting plate on the bottom surface of the pump sump bottom plate tooling, the central connecting shaft is key-connected to the central gear, and the bottom end of the central connecting shaft is movably pivotally connected to the bearing mounting plate on the surface of the supporting channel steel.

[0010] Preferably, the output shaft of the driving motor is connected to the center position of the bottom surface of the driving gear. The bottom surface of the driving motor is provided with a motor mounting seat, and the edge of the motor mounting seat is connected to the surface of the supporting channel steel by bolts.

[0011] Preferably, a remote control main body and a motor controller are connected to the surface of the supporting channel steel by screws, and the motor controller is electrically connected to the driving motor.

[0012] Beneficial effects

[0013] In the present utility model, the bottom surface of the pump sump bottom plate tooling is connected to the central gear through the bearing mounting plate and the guiding bearing. The driving gear meshing with the central gear rotates under the drive of the driving motor, thereby driving the central gear to rotate. The entire pump sump bottom plate tooling is driven to rotate through the guiding bearing, so that the entire pump sump bottom plate can rotate automatically during welding, and the opening and closing and rotation speed of the driving motor are controlled to automatically control the direction and speed of the entire pump sump bottom plate tooling, facilitating the welding process on the working surface of the pump sump bottom plate by the operator. It is simple and convenient, easy to operate and control, avoiding the cumbersome operation of manually moving the position, with a reasonable structure and easy to control.

[0014] In the present utility model, the supporting channel steel is used to stably support the entire pump sump bottom plate tooling, and the position of the entire device can be moved through the movable universal wheels arranged at the bottom. A reinforcing plate is added to the top surface of the pump sump bottom plate tooling to secondarily reinforce the surface of the pump sump bottom plate tooling, maintaining the stability of the pump sump bottom plate tooling and preventing deformation during welding, increasing stability and compressive resistance. Description of the drawings

[0015] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0016] Figure 2 is an axonometric drawing of the present utility model;

[0017] Figure 3 is an internal partial connection diagram of the present utility model;

[0018] Figure 4 is a disassembled structure diagram of the present utility model;

[0019] Figure 5 This is the exploded axonometric view of the present utility model.

[0020] Legend:

[0021] 1. Movable universal wheel; 2. Remote control main body; 3. Support channel steel; 4. Pump pool bottom plate tooling; 5. Bearing mounting plate; 6. Guide bearing; 7. Central connecting shaft; 8. Driving motor; 9. Motor controller; 10. Central gear; 11. Driving gear; 12. Reinforcing plate; 13. Motor mounting seat. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0023] The specific embodiments of the present utility model will be described below in conjunction with the drawings. Specific Embodiment 1:

[0025] Referring to Figures 1-5 , the LNG cryogenic pump pool automatic rotation tooling includes a support channel steel 3 and a pump pool bottom plate tooling 4. Bearing mounting plates 5 are provided on the top surface of the support channel steel 3 and the bottom surface of the pump pool bottom plate tooling 4. Guide bearings 6 are bolted to the surface of the bearing mounting plates 5 in a circumferential manner. A central gear 10 is provided between adjacent guide bearings 6, and the surface of the central gear 10 abuts against the surface of the guide bearings 6. A central connecting shaft 7 penetrates between adjacent bearing mounting plates 5. A driving gear 11 is meshed with the side surface of the central gear 10. The driving gear 11 is vertically connected to the bottom of a driving motor 8. When the output shaft of the driving motor 8 rotates, the entire driving gear 11 is driven to rotate. Due to the meshing of the driving gear 11 and the central gear 10, the central connecting shaft 7 is key-connected to the bearing mounting plate 5 on the bottom surface of the pump pool bottom plate tooling 4, the central connecting shaft 7 is key-connected to the central gear 10, and the bottom end of the central connecting shaft 7 is movably pivotally connected to the bearing mounting plate 5 on the surface of the support channel steel 3. When the driving gear 11 rotates, it drives the central gear 10 to rotate. Under the action of the central connecting shaft 7, the central gear 10 and the guide bearings 6, bearing mounting plates 5 and pump pool bottom plate tooling 4 on its top rotate synchronously. While rotating, the bottom surface of the central gear 10 rotates along the surface of the bottom guide bearing 6, and the bottom end of the central connecting shaft 7 rotates inside the bottom bearing mounting plate 5, so as to adjust the angle rotation of the pump pool bottom plate tooling 4.

[0026] To enhance the stability of the pump pool bottom plate tooling 4 and prevent deformation, a reinforcing plate 12 is provided at the center position of the top surface of the pump pool bottom plate tooling 4. The reinforcing plate 12 and the pump pool bottom plate tooling 4 are integrally formed, and the edges of the surface of the reinforcing plate 12 are rounded. By adding the reinforcing plate 12 to the top surface of the pump pool bottom plate tooling 4, the surface of the pump pool bottom plate tooling 4 is secondarily reinforced through the reinforcing plate 12, maintaining the stability of the pump pool bottom plate tooling 4, preventing deformation during welding, and increasing stability, compressive resistance, and pressure resistance.

[0027] Other limiting structures of the entire device are as follows: Multiple groups of support channel steels 3 are circumferentially distributed. A movable universal wheel 1 is bolted to the bottom surface of the end of the support channel steel 3 away from the center position. The bearing mounting plate 5 is connected to the surfaces of the pump pool bottom plate working part and the support channel steel 3 by bolts. Adjacent bearing mounting plates 5 are of the same size, and the vertical center lines of adjacent bearing mounting plates 5 coincide with each other. The support channel steel 3 stably supports the entire pump pool bottom plate tooling 4, and the position of the entire device can be moved through the movable universal wheel 1 provided at the bottom. The output shaft of the drive motor 8 is connected to the center position of the bottom surface of the drive gear 11. The bottom surface of the drive motor 8 is provided with a motor mounting seat 13, and the edge of the motor mounting seat 13 is connected to the surface of the support channel steel 3 by bolts. The motor mounting seat 13 keeps the drive motor 8 stable.

[0028] The control structure of the entire device is as follows: A remote control main body 2 is provided on the surface of the support channel steel 3. The remote control main body 2 and the motor controller 9 are connected to the surface of the support channel steel 3 by screws, and the motor controller 9 is electrically connected to the drive motor 8. The motor controller 9 is used for transmitting commands of motor signals, and the remote control main body 2 is used for controlling the direction, speed, and opening and closing adjustment of the drive motor 8. Specific Embodiment Two:

[0030] Refer to Figures 1-4 , and further disclose the following technical content based on the content in the above specific embodiment:

[0031] When performing the welding work of the LNG cryogenic pump pool bottom plate tooling 4, the entire process can be divided into several key steps: the preparation stage, installation and positioning, welding operation, rotation adjustment, and re-welding, which are as follows:

[0032] Preparation stage: Check whether the connection relationships of all components of the entire device correspond, whether the installation positions are correct. The connections of the drive motor 8, the central gear 10, and the drive gear 11 need to be accurate. Conduct a preliminary debugging of the drive motor 8 through the remote control main body 2 and the motor controller 9, and check whether its rotation direction and speed adjustment functions are normal;

[0033] Placement tooling: Place the assembled pump pool bottom plate tooling 4 on a flat workbench or the ground, ensuring that the support channel steel 3 is stable and does not shake. If welding is required at specific positions, fixtures or pressing plates can be used to fix the tooling on the workbench to prevent displacement during the welding process;

[0034] Welding operation: Start the preliminary welding work on the pump pool bottom plate tooling 4. According to the welding drawings or process requirements, weld at positions that do not require rotation. During the welding process, continuously monitor the welding quality to ensure that the welds are uniform, free of pores, cracks and other defects;

[0035] Rotation adjustment and re-welding: Start the drive motor 8 through the remote control. The drive gear 11 drives the central gear 10 to rotate, and then the pump pool bottom plate tooling 4 starts to rotate through the guide bearing 6. According to the parts to be welded and the welding process requirements, adjust the speed of the drive motor 8 through the remote control to achieve the best welding angle and speed;

[0036] Continue welding: After the pump pool bottom plate tooling 4 rotates to the specified position, stop the drive motor 8 and carry out the welding work at this position. Repeat this process until all the parts that need to be welded are completed;

[0037] Welding completion and inspection: After all the welding work is completed, turn off the drive motor 8 through the remote control to stop the rotation of the pump pool bottom plate tooling 4;

[0038] Inspect the welds: Conduct a comprehensive inspection of the welds to ensure that the welding quality meets the design requirements and there are no missed welds, false welds and other phenomena.

[0039] Clean up the site: Clean up the work site, put the tools and equipment in place, and keep the work environment clean.

[0040] For the control and adjustment of the drive motor 8, it is mainly achieved through the remote control and the motor controller 9:

[0041] Remote control operation: The remote control is usually equipped with control elements such as start / stop buttons, speed adjustment knobs or buttons. The operator can start the drive motor 8 by pressing the start button, adjust the speed of the motor by rotating the speed adjustment knob or button, and when the welding is completed or a pause is needed, press the stop button to stop the motor;

[0042] Motor controller 9: The motor controller 9 is a key device connecting the remote control and the drive motor 8. It receives the command signal sent by the remote control and converts it into a control signal that the drive motor 8 can recognize. At the same time, the motor controller 9 also has safety functions such as overload protection and short-circuit protection to ensure the safe and stable operation of the motor during operation.

[0043] Through the cooperation of the above steps and equipment, the efficient and precise welding work of the LNG cryogenic pump pool bottom plate tooling 4 can be achieved, and the work efficiency and welding quality can be greatly improved.

[0044] In summary:

[0045] 1. The bottom surface of the pump pool bottom plate tooling 4 is connected to the central gear 10 through the bearing mounting plate 5 and the guiding bearing 6. The driving gear 11 meshing with the central gear 10 rotates under the drive of the driving motor 8, thereby driving the central gear 10 to rotate. The guiding bearing 6 drives the entire pump pool bottom plate tooling 4 to rotate, enabling the entire pump pool bottom plate work to rotate automatically during welding. By controlling the opening, closing, and rotation speed of the driving motor 8, the direction and speed of the entire pump pool bottom plate tooling 4 can be automatically controlled, facilitating the welding process on the working surface of the pump pool bottom plate for the operator. It is simple, convenient, easy to operate and control, avoiding the cumbersome operation of manual position movement. The structure is in the southeast direction and is easy to control and operate.

[0046] 2. The support channel steel 3 is used to stably support the entire pump pool bottom plate tooling 4, and the position of the entire device can be moved through the mobile universal wheels 1 installed at the bottom. The reinforcing plate 12 is added to the top surface of the pump pool bottom plate tooling 4 to reinforce the surface of the pump pool bottom plate tooling 4 for the second time, maintaining the stability of the pump pool bottom plate tooling 4 and preventing deformation during welding, thereby increasing stability, compressive strength, and pressure resistance.

[0047] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0048] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic rotating fixture for an LNG cryogenic pump pool, comprising a supporting channel steel (3) and a pump pool bottom plate fixture (4), characterized in that: The top surface of the support channel steel (3) and the bottom surface of the pump tank bottom plate tooling (4) are both provided with a bearing mounting plate (5), and a guide bearing (6) is bolted circumferentially on the surface of the bearing mounting plate (5), and a central gear (10) is provided between adjacent guide bearings (6), and the surface of the central gear (10) is against the surface of the guide bearing (6), and a central connecting shaft (7) is passed through between adjacent bearing mounting plates (5), and a driving gear (11) is meshed on the side of the central gear (10), and a driving motor (8) is vertically connected to the bottom of the driving gear (11), and a remote control body (2) is provided on the surface of the support channel steel (3).

2. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: A reinforcing plate (12) is provided at the center of the top surface of the pump pool bottom plate fixture (4), and the reinforcing plate (12) and the pump pool bottom plate fixture (4) are integrally formed, and the surface edge of the reinforcing plate (12) is rounded.

3. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: The supporting channel steel (3) is provided with a plurality of groups distributed around the circumference, and a movable universal wheel (1) is bolted to the bottom surface of the end portion of the supporting channel steel (3) away from the center position.

4. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: The bearing mounting plates (5) are connected to the working and supporting channel steel (3) surfaces of the pump pool bottom plate by bolts, and adjacent bearing mounting plates (5) are of the same size, and the vertical center lines of adjacent bearing mounting plates (5) overlap with each other.

5. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: The central connecting shaft (7) is key-connected to the bearing mounting plate (5) on the bottom surface of the pump pool bottom plate tooling (4), the central connecting shaft (7) is key-connected to the central gear (10), and the bottom end of the central connecting shaft (7) is movably connected to the bearing mounting plate (5) on the surface of the supporting channel steel (3).

6. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: The output shaft of the driving motor (8) is connected to the center position of the bottom surface of the driving gear (11), the bottom surface of the driving motor (8) is provided with a motor mounting seat (13), and the edge of the motor mounting seat (13) is connected to the surface of the supporting channel steel (3) by bolts.

7. The LNG cryogenic pump pool automatic rotating tooling according to claim 1 is characterized by: The surface of the supporting channel steel is provided with a remote control body (2) and a motor controller (9) connected by screws, and the motor controller (9) is electrically connected to the driving motor (8).

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