High strength lng loading arm

Abstract

The utility model discloses a high -strength LNG loading and unloading arm relates to LNG loading and unloading arm technical field, including support seat and fixedly installed bottom pipe of support seat top, the inside rotation of bottom pipe is equipped with rotating column, and the outer wall upper end of rotating column is equipped with loading and unloading subassembly and fixedly installed, and the inside between rotating column and bottom pipe is equipped with rotating subassembly, and the inner wall lower end of bottom pipe is equipped with filter screen and fixedly installed, and the outer wall lower end of bottom pipe is equipped with oil injection pipe and fixedly installed, and the upper end spout of oil injection pipe is equipped with circulating oil pipe with bottom pipe lower end intercommunication, and the outer wall of bottom pipe is equipped with lubricating oil tank and fixedly installed, and the bottom of lubricating oil tank is equipped with oil filler pipe and intercommunication, and the lower end of oil filler pipe is equipped with oil injection pipe and is gone into. The utility model discloses can make loading and unloading arm when using, and lubricating oil continues to flow and effectively lubricates rotating subassembly, and the oil of lubricating drop can be collected after filtration and use again, improves the use intensity and use multifunction of loading and unloading arm.

Description

Technical Field

[0001] This utility model relates to the field of LNG loading and unloading arm technology, specifically to a high-strength LNG loading and unloading arm. Background Technology

[0002] An LNG loading arm is a specialized piece of equipment used for the efficient and safe transfer of liquefied natural gas between storage tanks and transport vehicles. To ensure stability during the loading and unloading process, the loading arm itself needs to have high strength. For example, patent document CN213118461U discloses an LNG loading arm with adjustable height. This loading arm is designed with a lubrication mechanism, which can be completed by simply pulling a lever. By designing a lubrication mechanism, the first and second bevel gears inside the LNG loading arm can be lubricated after long-term use, reducing the wear on the surfaces of the first and second bevel gears.

[0003] However, when adding lubricant to the internal lubrication structure of the loading arm, it is necessary to manually control the opening and closing of the corresponding components to complete the lubricant drop. This results in the internal drive components of the loading arm not receiving real-time and effective lubrication during operation, which will still cause obstruction to the strength of the loading arm during use. Utility Model Content

[0004] In view of the problems existing in the current high-strength LNG loading and unloading arms, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a high-strength LNG loading and unloading arm that solves the problem that existing LNG loading and unloading arms cannot achieve continuous and stable lubrication by reducing human intervention during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-strength LNG loading and unloading arm includes a support base and a bottom tube fixedly disposed on the top of the support base. A rotating column is rotatably inserted inside the bottom tube. A loading and unloading assembly is fixedly disposed on the upper end of the outer wall of the rotating column. A rotating assembly is disposed between the rotating column and the inside of the bottom tube. A filter screen is fixedly installed at the lower end of the inner wall of the bottom pipe, and an oil injection pipe is fixedly installed at the lower end of the outer wall of the bottom pipe. A circulating oil pipe is connected between the upper end of the oil injection pipe and the lower end of the bottom pipe. A lubricating oil tank is fixedly installed on the outer wall of the bottom pipe, and a refilling pipe is connected to the bottom of the lubricating oil tank. The lower end of the refilling pipe is inserted into the oil injection pipe.

[0007] Preferably, a drive motor is fixedly installed at the lower end of the outer wall of the bottom pipe, a pressure block is fixedly installed at the end of the output shaft of the drive motor, a transfer airbag is fixedly sleeved at the lower end of the circulating oil pipe, a plurality of symmetrically arranged return springs are fixedly installed on the inner wall of the transfer airbag, two liquid one-way valves are fixedly sleeved on the outer wall of the circulating oil pipe, the two liquid one-way valves are located at both ends of the transfer airbag, and the pressure block is configured to cooperate with the transfer airbag.

[0008] Preferably, the two liquid check valves have opposite inlet and outlet directions.

[0009] Preferably, an inspection port is provided at the lower end of the outer wall of the bottom pipe, and a sealing cover is provided on the outer wall of the inspection port. Multiple connecting bolts are threaded between the sealing cover and the outer wall of the bottom pipe.

[0010] Furthermore, the pressure block is configured in a cam shape.

[0011] Preferably, the top of the lubricating oil tank is provided with an oil filling port, and the inside of the oil filling port is sealed with a sealing plug.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model, through the provision of a bottom pipe, rotating column, rotating assembly, loading and unloading assembly, lubricating oil tank, oil injection pipe, circulating oil pipe and filter screen, enables the loading and unloading arm to continuously flow lubricating oil during use and effectively lubricate the rotating assembly. At the same time, the lubricating oil dripping can be filtered, collected and reused, thereby improving the strength and multi-functionality of the loading and unloading arm.

[0013] 2. This utility model, through the provided drive motor, pressure block, transfer airbag, return spring and liquid check valve, can effectively filter the filtered lubricating oil and reuse it. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a sectional perspective view of the present invention; Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of part A; Figure 4 This is an internal cross-sectional view of the transfer airbag of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Support base; 2. Bottom pipe; 3. Rotating column; 4. Loading and unloading assembly; 5. Rotating assembly; 6. Filter screen; 7. Oil injection pipe; 8. Circulating oil pipe; 9. Lubricating oil tank; 10. Oil filling pipe; 11. Drive motor; 12. Pressure block; 13. Transfer airbag; 14. Return spring; 15. Liquid check valve; 16. Sealing cover plate; 17. Connecting bolts; 18. Sealing plug. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model discloses a high-strength LNG loading and unloading arm.

[0019] This utility model provides, for example Figure 1-4 The high-strength LNG loading and unloading arm shown includes a support base 1 and a bottom pipe 2 fixedly installed on the top of the support base 1. A rotating column 3 is rotatably installed inside the bottom pipe 2. A loading and unloading assembly 4 is fixedly installed on the upper end of the outer wall of the rotating column 3. A rotating assembly 5 is provided between the rotating column 3 and the inside of the bottom pipe 2. A filter screen 6 is fixedly installed at the lower end of the inner wall of the bottom pipe 2. An inspection port is opened at the lower end of the outer wall of the bottom pipe 2. A sealing cover plate 16 is installed on the outer wall of the inspection port. Multiple connecting bolts 17 are threaded between the sealing cover plate 16 and the outer wall of the bottom pipe 2. An oil injection pipe 7 is fixedly installed at the lower end of the outer wall of the bottom pipe 2. A circulating oil pipe 8 is connected between the upper end of the oil injection pipe 7 and the lower end of the bottom pipe 2. A lubricating oil tank 9 is fixedly installed on the outer wall of the bottom pipe 2. An oil filling port is opened at the top of the lubricating oil tank 9. A sealing plug 18 is embedded inside the oil filling port. A filling pipe 10 is connected to the bottom of the lubricating oil tank 9. The lower end of the filling pipe 10 is inserted into the oil injection pipe 7.

[0020] In order to ensure that the lubricating oil can be effectively filtered and reused after entering the bottom pipe, such as Figure 1 and Figure 3 As shown, a drive motor 11 is fixedly installed at the lower end of the outer wall of the bottom pipe 2, and a pressure block 12 is fixedly installed at the end of the output shaft of the drive motor 11. The pressure block 12 is cam-shaped. A transfer airbag 13 is fixedly sleeved at the lower end of the circulating oil pipe 8. A plurality of symmetrically arranged return springs 14 are fixedly installed on the inner wall of the transfer airbag 13. Two liquid one-way valves 15 are fixedly sleeved on the outer wall of the circulating oil pipe 8. The liquid inlet and outlet directions of the two liquid one-way valves 15 are opposite. The two liquid one-way valves 15 are located at both ends of the transfer airbag 13. The pressure block 12 is configured to cooperate with the transfer airbag 13.

[0021] Working principle: When in use, remove the sealing plug 18 and add lubricating oil to the lubricating oil tank 9. Then, the sealing plug 18 continues to seal the oil filling port. When the loading and unloading arm is in use, the lubricating oil in the lubricating oil tank 9 flows into the oil filling pipe 7 through the oil filling pipe 10, and then is transported to the bottom pipe 2 through the oil filling pipe 7 to lubricate the rotating component 5 between the rotating column 3 and the bottom pipe 2. After lubrication, excess oil drips downwards, is filtered by filter screen 6 to remove impurities, and collects at the bottom of bottom pipe 2. At the same time, drive motor 11 starts, driving cam-shaped pressure block 12 to rotate. Pressure block 12 periodically squeezes transfer air bag 13 on circulation oil pipe 8. When transfer air bag 13 is compressed, the oil inside pushes open the liquid check valve 15 near bottom pipe 2 and enters circulation oil pipe 8. After pressure block 12 rotates away, transfer air bag 13 resets under the action of return spring 14, generating suction. Through the liquid check valve 15 on the other side, the filtered oil is sucked into transfer air bag 13 from the bottom of bottom pipe 2, realizing oil circulation. The circulated oil enters oil injection pipe 7 again through circulation oil pipe 8, mixes with newly added lubricating oil, and is reused for lubrication, ensuring that rotating component 5 is continuously lubricated and improving the strength of loading and unloading arm. After the filter screen 6 has been used for a long time, it can be quickly inspected and repaired. During the inspection, unscrew the connecting bolt 17 and open the sealing cover 16 to maintain the filter screen 6 and its internal components.

[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength LNG loading / unloading arm, comprising a support base (1) and a bottom pipe (2) fixedly disposed on the top of the support base (1), characterized in that, The bottom tube (2) is rotatably connected to a rotating column (3), and a loading and unloading assembly (4) is fixedly provided on the upper end of the outer wall of the rotating column (3). A rotating assembly (5) is provided between the rotating column (3) and the bottom tube (2). A filter screen (6) is fixedly provided at the lower end of the inner wall of the bottom pipe (2). An oil injection pipe (7) is fixedly provided at the lower end of the outer wall of the bottom pipe (2). A circulating oil pipe (8) is provided between the upper end of the oil injection pipe (7) and the lower end of the bottom pipe (2). A lubricating oil tank (9) is fixedly provided on the outer wall of the bottom pipe (2). A refueling pipe (10) is provided at the bottom of the lubricating oil tank (9). The lower end of the refueling pipe (10) is inserted into the oil injection pipe (7).

2. The high-strength LNG loading / unloading arm according to claim 1, characterized in that, The lower end of the outer wall of the bottom pipe (2) is fixedly provided with a drive motor (11), and the output shaft of the drive motor (11) is fixedly provided with a pressure block (12). The lower end of the circulating oil pipe (8) is fixedly provided with a transfer airbag (13). The inner wall of the transfer airbag (13) is fixedly provided with a plurality of symmetrically arranged return springs (14). The outer wall of the circulating oil pipe (8) is fixedly provided with two liquid one-way valves (15). The two liquid one-way valves (15) are located at both ends of the transfer airbag (13). The pressure block (12) is configured to cooperate with the transfer airbag (13).

3. The high-strength LNG loading / unloading arm according to claim 2, characterized in that, The two liquid check valves (15) have opposite liquid inlet and outlet directions.

4. The high-strength LNG loading / unloading arm according to claim 1, characterized in that, The lower end of the outer wall of the bottom pipe (2) is provided with an inspection port, and the outer wall of the inspection port is covered with a sealing cover plate (16). Multiple connecting bolts (17) are threaded between the sealing cover plate (16) and the outer wall of the bottom pipe (2).

5. The high-strength LNG loading / unloading arm according to claim 2, characterized in that, The pressure block (12) is arranged in a cam shape.

6. The high-strength LNG loading / unloading arm according to claim 1, characterized in that, The top of the lubricating oil tank (9) is provided with an oil filling port, and the inside of the oil filling port is sealed with a sealing plug (18).

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