A sealing structure for oil and gas recovery loading arms

Abstract

This utility model relates to a sealing structure for an oil and gas recovery loading arm, belonging to the field of loading arm technology. It includes a loading arm body and a sealing cap. A through-hole is formed in the sealing cap, and the loading arm body is inserted into the through-hole. A gap exists between the outer wall of the loading arm body and the through-hole. An upper end plate and a lower end plate are fitted onto the loading arm body, both fixedly connected to it. An upper telescopic tube is fixedly installed between the bottom of the upper end plate and the top of the sealing cap, and is fitted onto the loading arm body. A lower telescopic tube is fixedly installed between the top of the lower end plate and the bottom of the sealing cap, and is fitted onto the loading arm body. This application facilitates the use of the loading arm and its matching sealing cap.

Description

Technical Field

[0001] This utility model relates to the field of loading arm technology, and in particular to a sealing structure for an oil and gas recovery loading arm. Background Technology

[0002] Loading arms, also known as fluid loading and unloading arms, are specialized equipment used in the petrochemical industry for loading and unloading fluids. In the current petrochemical industry, when using loading arms for oil loading and unloading operations, it is necessary not only to insert the bottom end of the loading arm into the bottom of the tanker truck, but also to use the sealing cap equipped on the loading arm to seal the unloading port to reduce the possibility of oil and gas leakage.

[0003] Due to the differences in the size of oil tankers, in order to make the loading arm and its matching sealing cap suitable for various oil tankers, the connection between the sealing cap and the loading arm is designed as a sliding connection. At the same time, in order to ensure the sealing performance between the sealing cap and the loading arm, the gap between the sealing cap and the loading arm is minimized. This makes it easy for the sealing cap to get stuck when sliding up and down along the loading arm, resulting in inconvenience in the use of the loading arm and its matching sealing cap. Utility Model Content

[0004] To facilitate the use of loading arms and their matching sealing caps, this application provides a sealing structure for oil and gas recovery loading arms.

[0005] The sealing structure for an oil and gas recovery loading arm provided in this application adopts the following technical solution:

[0006] A sealing structure for an oil and gas recovery loading arm includes a loading arm body and a sealing cap. A loading arm hole is formed through the sealing cap, and the loading arm body is inserted into the loading arm hole. A gap exists between the outer wall of the loading arm body and the loading arm hole. An upper end plate and a lower end plate are fitted onto the loading arm body, and both the upper and lower end plates are fixedly connected to the loading arm body. An upper telescopic tube is fixedly installed between the bottom of the upper end plate and the top of the sealing cap, and the upper telescopic tube is fitted onto the loading arm body. A lower telescopic tube is fixedly installed between the top of the lower end plate and the bottom of the sealing cap, and the lower telescopic tube is fitted onto the loading arm body.

[0007] By adopting the above technical solution, when using loading arms for oil loading and unloading operations, the bottom end of the loading arm body is inserted into the bottom of the tanker truck, and the unloading port is sealed with a sealing cap to reduce oil and gas leakage. When the loading arm body and the sealing cap move relative to each other, the loading arm body drives the upper and lower telescopic pipes to extend and retract. At the same time, the upper and lower telescopic pipes seal the gap between the outer wall of the loading arm body and the loading arm hole. This not only ensures the sealing performance between the sealing cap and the loading arm body, but also provides a gap between the sealing cap and the loading arm body that facilitates relative movement, reducing the possibility of the sealing cap getting stuck when sliding up and down along the loading arm body. This achieves the effect of facilitating the use of the loading arm and its matching sealing cap.

[0008] Preferably, the sealing cover includes an inner ring plate, an outer ring plate, and a rubber gasket. The loading arm hole is opened through the inner ring plate. The top wall of the inner ring plate is sealed to the bottom end of the upper telescopic tube, and the bottom wall of the inner ring plate is sealed to the top end of the lower telescopic tube. The outer ring plate is sleeved on the inner ring plate and fixedly connected to the inner ring plate. The rubber gasket is disposed at the bottom of the outer ring plate.

[0009] By adopting the above technical solution, the oil unloading port can be sealed using a rubber gasket.

[0010] Preferably, the inner ring plate has several through holes, and a screw is inserted into the through holes. The top end of the screw is connected to the upper end plate, and the bottom end of the screw is connected to the lower end plate.

[0011] By adopting the above technical solution, the inner ring plate moves along the screw, reducing the shaking and rotation of the sealing cover.

[0012] Preferably, the screw is provided with an upper ring plate and a lower ring plate. The upper ring plate is located above the outer ring plate, and the outer diameter of the upper ring plate is larger than the outer diameter of the lower end plate. The lower ring plate is located below the inner ring plate, and the outer diameter of the lower ring plate is smaller than the outer diameter of the lower end plate. A clamping assembly is provided on the screw to press the upper ring plate against the outer ring plate. Several mounting grooves are formed on the side wall of the lower ring plate, and the mounting grooves penetrate the top wall of the lower ring plate. A limiting assembly is provided in the mounting groove to abut against the inner wall of the tanker truck.

[0013] By adopting the above technical solution, during the process of inserting the loading arm into the tanker truck, the limiting component does not contact the inner wall of the unloading port, which facilitates the movement of the lower ring plate driven by the loading arm. When the bottom end of the loading arm is inserted into the bottom of the tanker truck, the limiting component first abuts against the inner wall of the tanker truck to restrict the upward movement of the loading arm. Then, the pressing component abuts the upper ring plate against the outer ring plate, and the upper ring plate abuts the outer ring plate against the outer wall of the tanker truck, thereby achieving the effect of fixing the sealing cap on the tanker truck and sealing the unloading port.

[0014] Preferably, an upper hole is formed through the upper ring plate, and the screw and the upper telescopic tube are both inserted into the upper hole. The clamping assembly includes a clamping nut and a clamping arm, both of which are located above the upper ring plate. The clamping nut is threadedly connected to the screw, and the clamping arm is rotatably mounted on the side wall of the clamping nut. The bottom of the clamping arm is used to abut against the top of the upper ring plate, and the bottom of the upper ring plate is used to abut against the top of the outer ring plate.

[0015] By adopting the above technical solution, when the loading arm body is restricted by the limiting component and cannot move upward, the clamping nut is rotated, and the clamping nut drives the clamping arm to move, so that the clamping arm abuts the upper ring plate against the outer ring plate, thereby making the rubber pad abut against the outer ring plate and the outer wall of the tank truck, sealing the gap between the outer ring plate and the outer wall of the tank truck. At this time, the outer ring plate is restricted by the outer wall of the tank truck and cannot move downward.

[0016] Preferably, the limiting component includes a limiting motor and a limiting arm. The limiting motor is fixedly installed in the mounting groove, and the limiting arm is fixedly connected to the output shaft of the limiting motor. The end of the limiting arm away from the limiting motor is used to protrude from the side wall and top wall of the lower ring plate.

[0017] By adopting the above technical solution, during the process of inserting the loading arm into the tanker truck, the limiting motor causes the limiting arm to be housed within the transmission range directly above the lower ring plate. At this time, the limiting arm does not contact the inner wall of the unloading port, which facilitates the movement of the loading arm and the lower ring plate. When the bottom end of the loading arm is inserted into the bottom of the tanker truck, the limiting motor drives the limiting arm to rotate, causing the end of the limiting arm away from the limiting motor to protrude from the side wall of the lower ring plate, thereby making the limiting arm abut against the inner wall of the tanker truck and restricting the loading arm from moving the lower end plate upward.

[0018] Preferably, a motor slot is provided in the mounting slot, the limiting motor is installed in the motor slot, and the limiting arm closes the motor slot.

[0019] By adopting the above technical solution, the limiting arm seals the motor slot, reducing the possibility of oil and gas contaminating the limiting motor.

[0020] Preferably, a lower hole is formed through the lower ring plate, and the lower telescopic tube is inserted into the lower hole. Several guide holes are formed through the lower ring plate, and the screw is inserted into the guide holes. An upper nut and a lower nut are threadedly connected to the screw. The bottom of the upper nut is used to abut against the top of the lower ring plate, and the top of the lower nut is used to abut against the bottom of the lower ring plate.

[0021] By adopting the above technical solution, since the wall thickness of different oil tankers is not consistent, the position of the lower ring plate on the screw can be adjusted by rotating the upper nut and the lower nut.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up the loading arm body, sealing cap, loading arm hole, upper end plate, lower end plate, upper telescopic tube and lower telescopic tube, not only is the sealing between the sealing cap and the loading arm body guaranteed, but also a gap is made between the sealing cap and the loading arm body to facilitate relative movement, reducing the situation of the sealing cap getting stuck when sliding up and down along the loading arm body, thus achieving the effect of facilitating the use of the loading arm and its matching sealing cap.

[0024] 2. By setting an inner ring plate, an outer ring plate, and a rubber gasket, the oil discharge port is sealed.

[0025] 3. By setting up an upper ring plate, a lower ring plate, a clamping component, a mounting groove, and a limiting component, the sealing cover is fixed on the tanker truck to seal the unloading port. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of a sealing structure for an oil and gas recovery loading arm in an embodiment of this application.

[0027] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0028] Figure 3 yes Figure 1 Enlarged view of section B.

[0029] Figure 4 This is a cross-sectional view showing the positional relationship between the mounting slot and the motor slot in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Loading arm body; 11. Loading arm hole; 2. Sealing cap; 21. Inner ring plate; 22. Outer ring plate; 23. Rubber gasket; 3. Upper telescopic tube; 31. Upper end plate; 4. Lower telescopic tube; 41. Lower end plate; 5. Screw; 51. Through hole; 6. Upper ring plate; 61. Upper hole; 62. Clamping assembly; 621. Clamping nut; 622. Clamping arm; 7. Lower ring plate; 71. Lower hole; 72. Guide hole; 73. Upper nut; 74. Lower nut; 8. Limiting assembly; 81. Limiting motor; 82. Limiting arm; 83. Mounting groove; 84. Motor groove; 9. Tanker truck; 91. Unloading port. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a sealing structure for an oil and gas recovery loading arm. (Refer to...) Figure 1 and Figure 2The loading arm includes a loading arm body 1 and a sealing cap 2. The sealing cap 2 includes an inner ring plate 21, an outer ring plate 22, and a rubber gasket 23. A loading arm hole 11 is formed through the inner ring plate 21, and the loading arm body 1 is inserted into the loading arm hole 11, with a gap between the outer wall of the loading arm body 1 and the loading arm hole 11. The outer ring plate 22 is fitted onto the inner ring plate 21, and the outer ring plate 22 and the inner ring plate 21 are integrally formed. The rubber gasket 23 covers the bottom wall of the outer ring plate 22. When the outer ring plate 22 abuts against the rubber gasket 23 on the tanker truck 9, the rubber gasket 23 seals the gap between the outer ring plate 22 and the outer wall of the tanker truck 9. An upper end plate 31 and a lower end plate 41 are fitted onto the loading arm body 1, and both the upper end plate 31 and the lower end plate 41 are integrally formed with the loading arm body 1 to achieve a seal. An upper telescopic pipe 3 is installed between the bottom of the upper end plate 31 and the top of the inner ring plate 21. Both the upper end plate 31 and the inner ring plate 21 are sealed to the upper telescopic pipe 3 via flanges. The upper telescopic pipe 3 is fitted onto the loading arm body 1. A lower telescopic pipe 4 is installed between the top of the lower end plate 41 and the bottom of the inner ring plate 21. Both the lower end plate 41 and the inner ring plate 21 are sealed to the lower telescopic pipe 4 via flanges. The lower telescopic pipe 4 is fitted onto the loading arm body 1. When using the loading arm for oil loading and unloading operations, the bottom end of the loading arm body 1 is inserted into the bottom of the tanker truck 9, and the unloading port 91 is sealed with the sealing cap 2 to reduce oil and gas leakage. When the loading arm body 1 and the sealing cap 2 move relative to each other, the loading arm body 1 drives the upper telescopic pipe 3 and the lower telescopic pipe 4 to extend and retract, while the upper telescopic pipe 3 and the lower telescopic pipe 4 seal the gap between the outer wall of the loading arm body 1 and the loading arm hole 11. This design not only ensures a tight seal between the sealing cap 2 and the loading arm body 1, but also provides a gap between them to facilitate relative movement. This reduces the likelihood of the sealing cap 2 getting stuck when sliding up and down along the loading arm body 1, thus facilitating the use of the loading arm and its matching sealing cap 2.

[0033] Reference Figures 1 to 4A plurality of through holes 51 are formed in the inner ring plate 21, and screws 5 are inserted into the through holes 51. The top end of the screws 5 is connected to the upper end plate 31, and the bottom end of the screws 5 is connected to the lower end plate 41. An upper ring plate 6 and a lower ring plate 7 are mounted on the screws 5. The upper ring plate 6 is located above the outer ring plate 22, and the outer diameter of the upper ring plate 6 is larger than the outer diameter of the lower end plate 41. The lower ring plate 7 is located below the inner ring plate 21, and the outer diameter of the lower ring plate 7 is smaller than the outer diameter of the lower end plate 41. An upper hole 61 is formed in the upper ring plate 6, and the screws 5 and the upper telescopic tube 3 are both inserted into the upper hole 61. A clamping assembly 62 is mounted on the screws 5, and the clamping assembly 62 is used to abut the upper ring plate 6 against the outer ring plate 22. A lower hole 71 is formed in the lower ring plate 7, and the lower telescopic tube 4 is inserted into the lower hole 71. The lower ring plate 7 has several mounting grooves 83 on its side wall, which penetrate the top wall of the lower ring plate 7. Limiting components 8 are installed within the mounting grooves 83. During the insertion of the loading arm body 1 into the tanker truck 9, the limiting components 8 do not contact the inner wall of the unloading port 91, facilitating the movement of the lower ring plate 7 by the loading arm body 1. Once the bottom end of the loading arm body 1 reaches the bottom of the tanker truck 9, the limiting components 8 first abut against the inner wall of the tanker truck 9, restricting the upward movement of the loading arm body 1. Then, the clamping component 62 presses the upper ring plate 6 against the outer ring plate 22, and the upper ring plate 6 presses the outer ring plate 22 against the outer wall of the tanker truck 9, thus fixing the sealing cap 2 to the tanker truck 9 and sealing the unloading port 91.

[0034] Reference Figure 1 and Figure 2 The clamping assembly 62 includes a clamping nut 621 and a clamping arm 622. The clamping nut 621 is threaded onto the screw 5, and the clamping arm 622 is rotatably mounted on the side wall of the clamping nut 621. Both the clamping nut 621 and the clamping arm 622 are located above the upper ring plate 6, with the bottom of the clamping arm 622 abutting against the top of the upper ring plate 6. When the bottom end of the loading arm body 1 is inserted into the bottom of the tanker truck 9, and the loading arm body 1 is restricted from moving upwards by the limiting assembly 8, the clamping nut 621 is rotated. The clamping nut 621 drives the clamping arm 622 to move, causing the clamping arm 622 to abut against the upper ring plate 6 against the outer ring plate 22, thereby causing the rubber gasket 23 to abut against the outer ring plate 22 and the outer wall of the tanker truck 9. This not only seals the gap between the outer ring plate 22 and the outer wall of the tanker truck 9, but also restricts the outer ring plate 22 between the upper ring plate 6 and the outer wall of the tanker truck 9, making it difficult for it to move.

[0035] Reference Figure 3 and Figure 4The limiting assembly 8 includes a limiting motor 81 and a limiting arm 82. The limiting arm 82 is welded to the output shaft of the limiting motor 81. The end of the limiting arm 82 away from the limiting motor 81 protrudes from the side wall and top wall of the lower ring plate 7. A motor slot 84 is formed in the inner wall of the mounting groove 83, and the limiting motor 81 is installed in the motor slot 84. The limiting arm 82 closes the motor slot 84 to reduce the possibility of oil and gas contaminating the limiting motor 81. During the process of inserting the loading arm body 1 into the tanker truck 9, the limiting motor 81 causes the limiting arm 82 to be housed within the transmission range directly above the lower ring plate 7. At this time, the limiting arm 82 does not contact the inner wall of the unloading port 91, which facilitates the movement of the lower ring plate 7 by the loading arm body 1. When the bottom end of the loading arm 1 is inserted into the bottom of the tanker truck 9, the limit motor 81 drives the limit arm 82 to rotate, so that the end of the limit arm 82 away from the limit motor 81 protrudes from the side wall of the lower ring plate 7, thereby making the limit arm 82 abut against the inner wall of the tanker truck 9, restricting the loading arm 1 from moving the lower end plate 41 upward.

[0036] refer to Figure 3 A series of guide holes 72 are formed through the lower ring plate 7, and the screw 5 is inserted into the guide holes 72. The screw 5 is threaded with an upper nut 73 and a lower nut 74. The bottom of the upper nut 73 is used to abut against the top of the lower ring plate 7, and the top of the lower nut 74 is used to abut against the bottom of the lower ring plate 7. Since the wall thickness and depth of different oil tank trucks 9 are different, the position of the lower ring plate 7 on the screw 5 is adjusted by rotating the upper nut 73 and the lower nut 74.

[0037] The implementation principle of the oil and gas recovery loading arm sealing structure in this application embodiment is as follows: When using the loading arm for oil loading and unloading operations, the bottom end of the loading arm body 1 is inserted into the bottom of the tanker truck 9, and the unloading port 91 is sealed with the sealing cap 2 to reduce oil and gas leakage. When the loading arm body 1 and the sealing cap 2 move relative to each other, the loading arm body 1 drives the upper telescopic pipe 3 and the lower telescopic pipe 4 to extend and retract, while the upper telescopic pipe 3 and the lower telescopic pipe 4 seal the gap between the outer wall of the loading arm body 1 and the loading arm hole 11. This not only ensures the sealing performance between the sealing cap 2 and the loading arm body 1, but also provides a gap between the sealing cap 2 and the loading arm body 1 to facilitate relative movement. This reduces the possibility of the sealing cap 2 getting stuck when sliding up and down along the loading arm body 1, thus achieving the effect of facilitating the use of the loading arm and its matching sealing cap 2.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing structure for an oil and gas recovery loading arm, comprising a loading arm body and a sealing cap, wherein a loading arm hole is formed through the sealing cap, and the loading arm body is inserted into the loading arm hole, characterized in that: There is a gap between the outer wall of the loading arm body and the loading arm hole. An upper end plate and a lower end plate are fitted on the loading arm body. The upper end plate and the lower end plate are fixedly connected to the loading arm body. An upper telescopic tube is fixedly installed between the bottom of the upper end plate and the top of the sealing cover. The upper telescopic tube is fitted on the loading arm body. A lower telescopic tube is fixedly installed between the top of the lower end plate and the bottom of the sealing cover. The lower telescopic tube is fitted on the loading arm body.

2. The sealing structure for an oil and gas recovery loading arm according to claim 1, characterized in that: The sealing cover includes an inner ring plate, an outer ring plate, and a rubber gasket. The loading arm hole is opened through the inner ring plate. The top wall of the inner ring plate is sealed to the bottom end of the upper telescopic tube, and the bottom wall of the inner ring plate is sealed to the top end of the lower telescopic tube. The outer ring plate is sleeved on the inner ring plate and fixedly connected to the inner ring plate. The rubber gasket is located at the bottom of the outer ring plate.

3. The sealing structure for an oil and gas recovery loading arm according to claim 2, characterized in that: Several through holes are formed through the inner ring plate, and screws are inserted into the through holes. The top end of the screw is connected to the upper end plate, and the bottom end of the screw is connected to the lower end plate.

4. The sealing structure for an oil and gas recovery loading arm according to claim 3, characterized in that: The screw is provided with an upper ring plate and a lower ring plate. The upper ring plate is located above the outer ring plate and its outer diameter is larger than that of the lower end plate. The lower ring plate is located below the inner ring plate and its outer diameter is smaller than that of the lower end plate. A clamping assembly is provided on the screw to press the upper ring plate against the outer ring plate. Several mounting grooves are formed on the side wall of the lower ring plate and penetrate the top wall of the lower ring plate. A limiting assembly is provided in the mounting groove and is used to abut against the inner wall of the tanker truck.

5. The sealing structure for an oil and gas recovery loading arm according to claim 4, characterized in that: An upper hole is formed through the upper ring plate, and the screw and the upper telescopic tube are both inserted into the upper hole. The clamping assembly includes a clamping nut and a clamping arm. The clamping nut and the clamping arm are both located above the upper ring plate. The clamping nut is threaded onto the screw, and the clamping arm is rotatably mounted on the side wall of the clamping nut. The bottom of the clamping arm is used to abut against the top of the upper ring plate, and the bottom of the upper ring plate is used to abut against the top of the outer ring plate.

6. The sealing structure for an oil and gas recovery loading arm according to claim 4, characterized in that: The limiting assembly includes a limiting motor and a limiting arm. The limiting motor is fixedly installed in the mounting groove, and the limiting arm is fixedly connected to the output shaft of the limiting motor. The end of the limiting arm away from the limiting motor is used to protrude from the side wall and top wall of the lower ring plate.

7. The sealing structure for an oil and gas recovery loading arm according to claim 6, characterized in that: A motor slot is formed in the mounting slot, the limiting motor is set in the motor slot, and the limiting arm closes the motor slot.

8. The sealing structure for an oil and gas recovery loading arm according to claim 4, characterized in that: A lower hole is formed through the lower ring plate, and the lower telescopic tube is inserted into the lower hole. Several guide holes are formed through the lower ring plate, and the screw is inserted into the guide holes. An upper nut and a lower nut are threadedly connected to the screw. The bottom of the upper nut is used to abut against the top of the lower ring plate, and the top of the lower nut is used to abut against the bottom of the lower ring plate.

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