Automatic residual oil recovery oil transfer arm

Abstract

The utility model relates to an automatic residual oil recovery oil transfer arm, relates to the technical field of oil transfer arms, and aims to solve the problem of residual oil products of the oil transfer arm. The automatic residual oil recovery oil transfer arm comprises a stand column, an inner arm connected with the stand column, an outer arm, an inner arm support and an outer arm support, and a residual oil recovery mechanism is arranged on the side, close to the stand column, of the inner arm support; the residual oil recovery mechanism comprises a recovery box, a flow guide pipe, a pneumatic butterfly valve and an explosion-proof pump, the recovery box is arranged on the supporting side wall of the inner arm, the pneumatic butterfly valve is arranged on the flow guide pipe, the two ends of the flow guide pipe are communicated to the recovery box and the elbow of the inner arm respectively, a flow guide ramp is arranged at the inlet end of the flow guide pipe, and the explosion-proof pump is arranged on the flow guide ramp. The flow guide ramp extends to the inner wall of the pipeline of the inner arm, and the anti-explosion pump is communicated to the bottom of the recycling box. The oil transfer arm has the advantages that oil products remaining on the inner arm, the outer arm and other parts of the oil transfer arm after oil loading and unloading operation is finished can be effectively collected, and oil product waste of enterprises is reduced.

Description

Technical Field

[0001] This application relates to the field of oil delivery arm technology, and in particular to an automatic residual oil recovery oil delivery arm. Background Technology

[0002] In modern ports, docks, and petrochemical storage and transportation, the oil transfer arm, as a key piece of equipment connecting oil tankers to onshore oil storage facilities, shoulders the important responsibility of efficiently and safely transporting oil. It typically consists of a column, inner arm, outer arm, and rotary joint. The column is firmly installed on the dock surface, providing support for the movement of the inner and outer arms. The inner and outer arms are flexibly rotated and sealed together via a rotary joint. One end of the inner arm is connected to the column, and the other end to the outer arm. Horizontally, it can rotate freely 360° around the column (some models have limited angles due to site or design constraints) to adapt to different berthing positions of oil tankers and quickly align with the oil tank openings, improving operational flexibility and efficiency. Vertically, it has a pitch capability of -30° to +70° to adapt to oil tanks with different liquid levels, ensuring smooth oil transfer. The outer arm connects to the end of the inner arm and can also rotate horizontally and pitch vertically. Together, they expand the operating range, and the vertical pitch of the outer arm can precisely adjust the height and angle of the outlet end to meet the precise requirements for docking with the oil tank.

[0003] In practical use, however, residual oil has become a key factor restricting performance improvement and environmental compliance. After each oil loading and unloading operation, a certain amount of oil inevitably remains on the inner and outer arms of the oil conveying boom. If this residual oil is not effectively treated and leaks directly into the marine or terrestrial environment, it will cause serious pollution to soil, water bodies, and ecosystems, disrupt the ecological balance, and affect the survival and reproduction of marine life. At the same time, from an economic perspective, the waste of residual oil directly increases the company's production costs and reduces economic benefits, so this issue needs to be addressed. Utility Model Content

[0004] To address the problem of residual oil in oil delivery arms, this application provides an automatic residual oil recovery oil delivery arm.

[0005] The automatic residual oil recovery and conveying arm provided in this application adopts the following technical solution:

[0006] An automatic residual oil recovery and delivery arm includes a column, an inner arm connected to the column, an outer arm, an inner arm support, and an outer arm support. The inner arm support has a residual oil recovery mechanism located near the column. The residual oil recovery mechanism includes a recovery tank, a guide pipe, a pneumatic butterfly valve, and an explosion-proof pump. The recovery tank is located on the side wall of the inner arm support. The pneumatic butterfly valve is located on the guide pipe. Both ends of the guide pipe are connected to the recovery tank and the inner arm bend, respectively. A guide ramp is provided at the inlet end of the guide pipe, extending to the inner wall of the inner arm pipe. The explosion-proof pump is connected to the bottom of the recovery tank.

[0007] After each oil loading and unloading operation, a certain amount of oil inevitably remains on the inner and outer arms of the oil transport boom. If this residual oil is leaked directly into the marine or terrestrial environment without effective treatment, it will cause serious pollution to soil, water bodies, and ecosystems, disrupt the ecological balance, and affect the survival and reproduction of marine life. From an economic perspective, the waste of residual oil directly increases the company's production costs and reduces economic benefits. By adopting the above-mentioned technical solution, including the column, the inner arm connected to the column, the outer arm, the inner arm support, and the outer arm support, the residual oil recovery mechanism is installed on one side of the inner arm support. The residual oil recovery mechanism consists of a recovery box, a guide pipe, a pneumatic butterfly valve, and an explosion-proof pump.

[0008] After the oil loading and unloading operation is completed, the operator confirms that the oil delivery arm has stopped transporting oil, controls the outer arm to rotate so that it faces the inner arm, and adjusts the angle of the inner arm to a suitable tilt position so that the oil can flow smoothly under the action of gravity. After the oil delivery arm is in the correct position, the operator remotely or on-site controls the pneumatic butterfly valve to open, forming a connecting channel between the guide pipe, the inner arm bend, and the recovery tank. Since the inner arm is in a tilted position, the residual oil begins to flow under its own gravity, moving along the guide ramp on the inner wall of the inner arm pipe, effectively guiding the residual oil smoothly into the guide pipe, and continuing to flow towards the recovery tank under the action of gravity until the residual oil level in the recovery tank no longer rises significantly, and the residual oil in the inner arm, outer arm, and other parts is basically recovered. Then, the operator closes the pneumatic butterfly valve, cutting off the connecting channel between the guide pipe, the inner arm bend, and the recovery tank. The residual oil in the recovery tank can be properly treated by turning on the explosion-proof pump.

[0009] The residual oil recovery mechanism is simple and efficient to operate, effectively collecting residual oil from the inner and outer arms of the oil loading and unloading boom after the operation. This prevents residual oil from leaking directly into the marine or terrestrial environment, significantly reducing the risk of pollution to soil, water, and ecosystems. It effectively protects the ecological environment, maintains ecological balance, and ensures the survival and reproduction of marine life. This meets increasingly stringent environmental regulations and sustainable development requirements, while also reducing oil waste for enterprises, directly lowering production costs, and improving the economic benefits of enterprises.

[0010] Optionally, the inclination angle of the guide ramp is 15-20°, and the surface of the guide ramp is coated with an oleophobic coating.

[0011] By adopting the above technical solution, the inclination angle of the guide ramp is 15-20°, and the surface of the guide ramp is coated with an oleophobic coating. Through the setting of the inclination angle of the guide ramp and the oleophobic coating, the inclination angle of 15-20° can allow the residual oil to flow smoothly along the guide ramp under its own gravity, avoiding slow flow or even stagnation due to the angle being too small, and can also prevent the residual oil from splashing due to the excessively fast flow rate caused by the angle being too large, ensuring that the residual oil recovery process is stable and orderly. At the same time, the oleophobic coating on the surface greatly reduces the adhesion between the residual oil and the guide ramp, making it difficult for residual oil to remain on the ramp surface, further improving the residual oil recovery efficiency and reducing oil loss.

[0012] Optionally, the guide pipe and the elbow end of the inner arm are provided with a flange for connection, and a fluororubber sealing ring is provided at the interface of the flange.

[0013] By adopting the above technical solution, the guide pipe and the inner arm elbow end are connected by a flange, and a fluororubber sealing ring is installed at the flange interface. Through the setting of the flange and the fluororubber sealing ring, the flange connection method has high strength and stability, which can ensure that the guide pipe and the inner arm elbow end are tightly connected, effectively withstanding various external forces during the operation of the oil delivery arm, such as vibration and pressure changes, avoiding loosening or falling off of the connection, and ensuring the structural stability of the residual oil recovery system. At the same time, the fluororubber sealing ring has excellent oil resistance and corrosion resistance, and can still maintain a good sealing effect in long-term contact with oil and complex chemical environments, preventing residual oil from leaking at the connection.

[0014] Optionally, the inner wall of the guide pipe is provided with a spiral guide groove, the pitch of the spiral guide groove is 120-160mm, and the groove depth is 1 / 8 of the pipe diameter.

[0015] By adopting the above technical solution, a spiral guide groove is opened on the inner wall of the guide pipe. Through the setting of the spiral guide groove, the spiral guide groove can guide the residual oil to form a spiral flow state in the pipe. The centrifugal force generated by the fluid rotation enhances the flow kinetic energy of the oil, effectively accelerates the transport speed of the residual oil in the guide pipe, reduces the residence time of the residual oil in the pipe, and avoids oil deposition or blockage due to slow flow rate.

[0016] Optionally, a level sensor for detecting the internal oil level is installed inside the recycling tank.

[0017] By adopting the above technical solution, the liquid level sensor is installed inside the recovery tank. Through the setting of the liquid level sensor, the liquid level sensor can detect the liquid level height in the recovery tank in real time and accurately. Operators can obtain accurate liquid level information at any time, so as to keep track of the progress of residual oil recovery and avoid oil overflow due to excessive liquid level.

[0018] Optionally, the inner arm support is provided with an assembly support for supporting the recycling bin on its side wall, and the assembly support is L-shaped.

[0019] By adopting the above technical solution, the recycling bin is installed on the inner arm support through the assembly support; through the setting of the assembly support, the L-shaped assembly support structure is stable and can provide reliable support for the recycling bin, effectively distributing the weight of the recycling bin and its internal oil, avoiding structural deformation or damage due to uneven force, and ensuring the stability of the recycling bin installation.

[0020] Optionally, both the uprights and the inner arm support are equipped with anti-slip ladders for climbing, and the vertical spacing between adjacent steps of the anti-slip ladders is 250-300mm.

[0021] By adopting the above technical solution, anti-slip ladders are installed on the columns and inner arm supports. With the help of the anti-slip ladders, operators can quickly and conveniently reach various parts of the columns and inner arm supports to carry out relevant work in a timely manner, ensuring that the equipment is always in good operating condition and reducing downtime and production losses caused by equipment failure.

[0022] Optionally, the inner arm support is provided with a limiting baffle for anti-collision outer arm support, and the blocking surface of the limiting baffle forms an angle of 5-10° with the outer arm retraction movement trajectory.

[0023] By adopting the above technical solution, the limiting baffle is welded and fixed to the inner arm support. The setting of the limiting baffle effectively protects the structural integrity of the outer arm and inner arm support, reduces wear and damage caused by collisions, extends the service life of the equipment, and can accurately limit the retraction position of the outer arm, ensuring that the outer arm can reach the accurate and fixed position each time it is retracted, thereby improving the stability and consistency of equipment operation.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The residual oil recovery mechanism is simple and efficient to operate, and can effectively collect residual oil from the inner and outer arms of the oil loading and unloading arm after the oil loading and unloading operation. This prevents residual oil from leaking directly into the marine or terrestrial environment, significantly reduces the risk of pollution to soil, water and ecosystems, effectively protects the ecological environment, maintains ecological balance, and ensures the survival and reproduction of marine life. It meets increasingly stringent environmental regulations and sustainable development requirements, while reducing oil waste for enterprises, directly reducing production costs and improving the economic benefits of enterprises.

[0026] 2. By setting the inclination angle of the guide ramp and the oleophobic coating, the inclination angle of 15-20° can allow the residual oil to flow smoothly along the guide ramp under its own gravity, avoiding slow flow or even stagnation due to the angle being too small. It can also prevent the residual oil from splashing due to the excessively fast flow rate caused by the angle, ensuring that the residual oil recovery process is stable and orderly. At the same time, the oleophobic coating sprayed on the surface greatly reduces the adhesion between the residual oil and the guide ramp, making it difficult for the residual oil to remain on the ramp surface, further improving the residual oil recovery efficiency and reducing oil loss.

[0027] 3. With the liquid level sensor installed, the liquid level sensor can detect the liquid level height in the recovery tank in real time and accurately. Operators can obtain accurate liquid level information at any time, so as to keep track of the residual oil recovery progress and avoid oil overflow due to excessive liquid level. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an automatic residual oil recovery and conveying arm in an embodiment of this application.

[0029] Figure 2 This is a side view of an automatic residual oil recovery and delivery arm according to an embodiment of this application.

[0030] Figure 3 This is a partial cross-sectional view used in the embodiments of this application to illustrate the residual oil recovery mechanism.

[0031] Explanation of reference numerals in the attached drawings: 1. Column; 2. Inner arm; 3. Outer arm; 4. Inner arm support; 5. Outer arm support; 6. Residual oil recovery mechanism; 61. Recovery tank; 62. Guide pipe; 63. Pneumatic butterfly valve; 64. Explosion-proof pump; 7. Guide ramp; 8. Flange; 81. Fluororubber sealing ring; 9. Spiral guide groove; 10. Liquid level sensor; 11. Assembly support; 12. Anti-slip ladder; 13. Limit baffle. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0033] This application discloses an automatic residual oil recovery and conveying arm. (Refer to...) Figure 1The automatic residual oil recovery and oil transfer arm includes a column 1, an inner arm 2, an outer arm 3, an inner arm support 4, and an outer arm support 5 connected to the column 1. In this embodiment, the column 1, the inner arm 2, the outer arm 3, the inner arm support 4, and the outer arm support 5 are all existing technologies. The inner arm 2 and the outer arm 3 are both made of multiple sections of steel pipes and elbows. The column 1 is the supporting foundation of the entire oil transfer arm. The inner arm 2 is connected to the top of the column 1. The inner arm support 4 is installed outside the inner arm 2, and the outer arm support 5 is installed outside the outer arm 3, providing additional support for the inner arm 2 and the outer arm 3. The outer arm 3 is connected to the inner arm 2 and has a larger range of motion and flexibility. The inner arm 2 and the outer arm 3 can achieve multi-dimensional rotation.

[0034] Reference Figure 1 Meanwhile, anti-slip ladders 12 are welded and fixed on both the column 1 and the inner arm support 4. The vertical spacing between adjacent steps of the anti-slip ladders 12 is 250-300mm. Operators can use the anti-slip ladders 12 to quickly and conveniently reach various parts of the column 1 and the inner arm support 4, carry out relevant work in a timely manner, ensure that the equipment is always in good operating condition, and reduce downtime and production losses caused by equipment failure.

[0035] Reference Figure 1 Meanwhile, a limiting baffle 13 is welded on the inner arm support 4. The blocking surface of the limiting baffle 13 forms an angle of 5-10° with the outer arm 3's retraction trajectory. In this embodiment, the limiting baffle 13 corresponds to the end position of the outer arm 3's retraction trajectory. This effectively protects the structural integrity of the outer arm 3 and the inner arm support 4, reduces wear and damage caused by collisions, extends the service life of the equipment, and precisely limits the retraction position of the outer arm 3, ensuring that the outer arm 3 reaches an accurate and fixed position each time it is retracted, thus improving the stability and consistency of the equipment operation.

[0036] Reference Figure 1 and Figure 3 An oil recovery mechanism 6 is installed on the inner arm support 4 near the column 1. The oil recovery mechanism 6 includes a recovery tank 61, a guide pipe 62, a pneumatic butterfly valve 63, and an explosion-proof pump 64. The recovery tank 61 has a hollow structure and is used to store oil. An assembly support 11 is welded to the side wall of the inner arm support 4. The recovery tank 61 is installed on the assembly support 11. In this embodiment, the assembly support 11 is L-shaped. The L-shaped assembly support 11 has a stable structure and can provide reliable support for the recovery tank 61, effectively distributing the weight of the recovery tank 61 and the oil inside, avoiding structural deformation or damage due to uneven force, and ensuring the stability of the installation of the recovery tank 61.

[0037] Reference Figure 2 and Figure 3The guide pipe 62 is arranged at the bend between the recovery tank 61 and the inner arm 2. One end of the guide pipe 62 is connected to the inside of the recovery tank 61, and the other end of the guide pipe 62 is connected to the bend of the inner arm 2. In this embodiment, a flange 8 is installed at the bend end of the guide pipe 62 and the inner arm 2, and a fluororubber sealing ring 81 is installed at the interface of the flange 8. The flange 8 connection method has high strength and stability, which can ensure that the guide pipe 62 and the bend end of the inner arm 2 are tightly connected, effectively withstanding various external forces during the operation of the oil conveying arm, such as vibration and pressure changes, avoiding loosening or falling off of the connection, and ensuring the structural stability of the residual oil recovery system. At the same time, the fluororubber sealing ring 81 has excellent oil resistance and corrosion resistance, and can still maintain a good sealing effect in long-term contact with oil and complex chemical environments, preventing residual oil from leaking at the connection.

[0038] Reference Figure 2 and Figure 3 The inlet end of the guide pipe 62 is provided with a guide ramp 7, which extends to the inner wall of the inner arm 2. The inclination angle of the guide ramp 7 is 15-20°, and the surface of the guide ramp 7 is coated with an oleophobic coating. The inclination angle of 15-20° allows the residual oil to flow smoothly along the guide ramp 7 under its own gravity, avoiding slow flow or even stagnation due to the angle being too small. It also prevents the residual oil from splashing due to the excessively fast flow rate caused by the angle being too large, ensuring that the residual oil recovery process is stable and orderly. At the same time, the oleophobic coating on the surface greatly reduces the adhesion between the residual oil and the guide ramp 7, making it difficult for residual oil to remain on the surface of the ramp, further improving the recovery efficiency of residual oil and reducing oil loss.

[0039] Reference Figure 2 and Figure 3 The inner wall of the guide pipe 62 is provided with a spiral guide groove 9. The spiral guide groove 9 is opened along the oil flow direction of the guide pipe 62. The pitch of the spiral guide groove 9 is 120-160mm, and the groove depth of the spiral guide groove 9 is 1 / 8 of the pipe diameter. The spiral guide groove 9 can guide the residual oil to form a spiral flow state in the pipe. It uses the centrifugal force generated by the fluid rotation to enhance the flow kinetic energy of the oil, effectively accelerate the conveying speed of the residual oil in the guide pipe 62, reduce the residence time of the residual oil in the pipe, and avoid oil deposition or blockage due to slow flow rate.

[0040] Reference Figure 2 and Figure 3 A pneumatic butterfly valve 63 is installed on the guide pipe 62 to open and close the communication channel between the guide pipe 62 and the elbow of the inner arm 2 and the recovery tank 61. At the same time, a liquid level sensor 10 is installed inside the recovery tank 61. The liquid level sensor 10 can detect the liquid level height of the oil in the recovery tank 61 in real time and accurately. The operator can obtain accurate liquid level information at any time, so as to keep track of the progress of residual oil recovery and avoid oil overflow due to excessive liquid level.

[0041] Reference Figure 2 and Figure 3 The explosion-proof pump 64 is installed at the bottom of the mounting support 11. The input end of the explosion-proof pump 64 is connected to the bottom of the recycling tank 61, and the output end of the explosion-proof pump 64 is connected to the corresponding pipe. In this embodiment, the liquid level sensor 10 can be a capacitive liquid level sensor 10. The liquid level sensor 10 is interlocked with the control system of the explosion-proof diaphragm pump. When the liquid level is ≥90%, the pumping is automatically started and an alarm is triggered.

[0042] The implementation principle of the automatic residual oil recovery conveying arm in this embodiment is as follows: After the oil loading and unloading operation is completed, the operator confirms that the conveying arm has stopped conveying oil, controls the outer arm 3 to rotate so that it faces the inner arm 2, and simultaneously adjusts the angle of the inner arm 2 to a suitable tilt state so that the oil can flow smoothly under the action of gravity. After the conveying arm posture is adjusted, the operator remotely or locally controls the pneumatic butterfly valve 63 to open, forming a communication channel between the guide pipe 62, the bend of the inner arm 2, and the recovery box 61. Because the inner arm 2 is in an tilted state, the residual oil... The oil begins to flow under its own gravity, moving along the guide ramp 7 on the inner wall of the inner arm 2 pipe, effectively guiding the residual oil smoothly into the guide pipe 62, and continuing to flow towards the recovery tank 61 under gravity until the residual oil level in the recovery tank 61 no longer rises significantly, and the residual oil in the inner arm 2, outer arm 3 and other parts is basically recovered. Then, the operator closes the pneumatic butterfly valve 63 to cut off the connection between the guide pipe 62 and the elbow of the inner arm 2 and the recovery tank 61. The residual oil in the recovery tank 61 can be properly treated by turning on the explosion-proof pump 64.

[0043] With the residual oil recovery mechanism 6 in place, the operation is simple and efficient. It can effectively collect residual oil from the inner arm 2 and outer arm 3 of the oil loading and unloading operation, preventing residual oil from directly leaking into the marine or terrestrial environment. This significantly reduces the risk of pollution to soil, water and ecosystems, effectively protects the ecological environment, maintains ecological balance, and ensures the survival and reproduction of marine life. It meets increasingly stringent environmental regulations and sustainable development requirements, while also reducing oil waste for enterprises, directly lowering production costs and improving the economic benefits of enterprises.

[0044] 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. An automatic residual oil recovery and conveying arm, comprising a column, an inner arm connected to the column, an outer arm, an inner arm support, and an outer arm support, characterized in that: The inner arm support is equipped with a residual oil recovery mechanism near the column. The residual oil recovery mechanism includes a recovery tank, a guide pipe, a pneumatic butterfly valve, and an explosion-proof pump. The recovery tank is arranged on the side wall of the inner arm support. The pneumatic butterfly valve is arranged on the guide pipe. The two ends of the guide pipe are respectively connected to the recovery tank and the inner arm bend. A guide ramp is provided at the inlet end of the guide pipe. The guide ramp extends to the inner wall of the pipe in the inner arm. The explosion-proof pump is connected to the bottom of the recovery tank.

2. The automatic residual oil recovery and conveying arm according to claim 1, characterized in that: The inclination angle of the guide ramp is 15-20°, and the surface of the guide ramp is coated with an oleophobic coating.

3. The automatic residual oil recovery and conveying arm according to claim 1, characterized in that: The guide pipe and the elbow end of the inner arm are provided with a flange for connection, and a fluororubber sealing ring is provided at the interface of the flange.

4. An automatic residual oil recovery and conveying arm according to claim 3, characterized in that: The inner wall of the guide pipe is provided with a spiral guide groove, the pitch of the spiral guide groove is 120-160mm, and the groove depth is 1 / 8 of the pipe diameter.

5. An automatic residual oil recovery and conveying arm according to claim 1, characterized in that: The recycling bin is equipped with a level sensor for detecting the internal oil level.

6. An automatic residual oil recovery and conveying arm according to claim 1, characterized in that: The inner arm support has an assembly support for supporting the recycling bin on its side wall. The assembly support is L-shaped.

7. An automatic residual oil recovery and conveying arm according to claim 1, characterized in that: Both the uprights and the inner arm support are equipped with anti-slip ladders for climbing, and the vertical spacing between adjacent steps of the anti-slip ladders is 250-300mm.

8. An automatic residual oil recovery and conveying arm according to claim 7, characterized in that: The inner arm support is provided with a limiting baffle for anti-collision outer arm support, and the blocking surface of the limiting baffle forms an angle of 5-10° with the outer arm retraction trajectory.

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