Oil gas recovery sealing device of light oil product loading and unloading vehicle

Abstract

The invention discloses an oil gas recovery sealing device of a light oil product loading and unloading vehicle, and relates to the technical field of oil gas sealing. The lifting device comprises a crane pipe, the outer diameter of the crane pipe is smaller than the inner diameter of an oil filling port of the loading and unloading truck, four hinge pieces are annularly arranged at the bottom end of the crane pipe, guide plates are hinged to the interiors of the four hinge pieces, an exhaust pipe is fixedly installed in the crane pipe, and the outer side of the exhaust pipe is sleeved with a lifting sleeve rod; a base plate is arranged at the bottom of the lifting sleeve rod, a plurality of hinge grooves are annularly formed in the outer side of the base plate, and supporting rods are hinged to the interiors of the hinge grooves; the umbrella further comprises a sealing umbrella cover. The sealing umbrella cover is unfolded to be conical, then the sealing umbrella cover is sealed with the loading and unloading vehicle oil filling port and the loading and unloading vehicle oil filling port, and when a vehicle body descends, the loading and unloading vehicle oil filling port pushes the inner rib rod to swing downwards, so that extrusion between the sealing umbrella cover and the loading and unloading vehicle oil filling port is tighter, a descending space can be provided for the vehicle body, and the sealing performance can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas sealing, and in particular to an oil and gas recovery sealing device of a light oil loading and unloading vehicle. Background Art

[0002] During the storage, transportation, sales and other loading and unloading processes of light oil products, a large amount of oil and gas will escape. According to statistics, the oil lost by the escape of light oil products each year accounts for about 0.5% of the light oil products. During the loading and unloading of light oil products each year, the total loading volume of light oil products reaches more than 100 million tons, and the oil and gas escape loss during the oil and gas loading process exceeds 500,000 tons. On the one hand, this leads to a large waste of oil and gas resources and reduces the economic benefits of enterprises. On the other hand, it leads to serious environmental pollution, endangers the safe production of enterprises, and directly affects the health of operators and people in the surrounding environment. Especially the loading of benzene is more polluting to the environment. Therefore, it is very necessary to adopt the closed recovery oil and gas loading technology during the loading of light oil products.

[0003] The existing light oil loading truck mainly adopts a crane pipe for filling. The crane pipe vehicle is slowly moved to the refueling port position of the tanker, and the outlet of the crane pipe is ensured to be aligned with the refueling port of the tanker. Then the crane arm is raised, and the joint of the crane pipe is aligned with the refueling port of the tanker. It is ensured that the crane pipe joint and the refueling port of the tanker are completely connected and there is no tilt or deviation. Then the joint of the crane pipe is inserted into the refueling port of the tanker, and the joint is rotated or locked to ensure a firm connection. During the filling process, as the amount of oil increases, the vehicle body will drop, which is easy to cause leakage. In the document (application number: CN201020563672.0) discloses an oil and gas recovery sealing device for a light oil loading and unloading vehicle, comprising: a concentric outer tube fixedly mounted on the outside of an oil loading and unloading crane pipe, an oil and gas discharge outlet being arranged on the upper part of the concentric outer tube, an oil and gas discharge channel being formed between the concentric outer tube and the oil loading and unloading crane pipe, an elastic inflatable airbag and an automatic force balancing spring being fixedly arranged on the outer side of the lower part of the oil and gas discharge outlet of the concentric outer tube. Although the device solves the problem of leakage caused by the lowering of the vehicle body, it needs to be pre-installed on the tanker during actual use, and the docking is complicated and difficult. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problem and provide an oil and gas recovery sealing device for a light oil loading and unloading vehicle.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A gas recovery sealing device for a light oil loading and unloading vehicle comprises a lifting pipe, wherein the outer diameter of the lifting pipe is smaller than the inner diameter of the refueling port of the loading and unloading vehicle, the bottom end of the lifting pipe is provided with four groups of hinged parts in an annular manner, the insides of the four groups of hinged parts are hinged with guide plates, the guide plates can swing, an exhaust pipe is fixedly installed inside the lifting pipe, the bottom end of the exhaust pipe is lower than the bottom end of the lifting pipe, a lifting sleeve rod is sleeved on the outside of the exhaust pipe, the lifting sleeve rod can slide up and down along the exhaust pipe, a chassis is provided at the bottom of the lifting sleeve rod, a plurality of groups of hinged grooves are provided in an annular manner on the outside of the chassis, and a support rod is hinged inside the hinged groove;

[0007] It also includes a sealed umbrella cover, wherein a plurality of groups of inner frame rods are arranged in an annular shape inside the sealed umbrella cover, and the inner frame rods are arranged corresponding to the hinge grooves, the middle part of the inner frame rods is hinged to the top of the support rod, and a nut block is arranged at the bottom of the hinge groove, and the internal thread of the nut block is connected to a limiting screw, and the limiting screw is located on the side of the support rod away from the lifting sleeve rod.

[0008] Furthermore, a mounting piece is fixedly mounted on the top of the lift pipe, and the exhaust pipe is fixedly mounted on the mounting piece.

[0009] Furthermore, a clamp is provided at the bottom of the mounting member.

[0010] Furthermore, a first electric telescopic rod is fixedly installed on the right side of the mounting piece, a pull rope is fixedly connected to the inner side of the guide plate, a pull ring is fixedly installed at the bottom of the telescopic end of the first electric telescopic rod, the pull ring is sleeved on the mounting piece, the pull rope passes through the crane tube and is fixedly connected to the bottom of the pull ring, and a torsion spring is provided at the hinge of the guide plate.

[0011] Furthermore, a second sealing sleeve is provided on the top of the crane pipe, and the pull rope passes through the second sealing sleeve.

[0012] Furthermore, a second electric telescopic rod is fixedly mounted on the top of the mounting member, the lifting sleeve rod passes through the crane tube, and a connecting member is fixedly mounted on the top of the lifting sleeve rod, and the connecting member is fixedly mounted on the bottom end of the second electric telescopic rod.

[0013] Furthermore, a first sealing sleeve is provided on the top of the crane pipe, and the lifting sleeve rod passes through the first sealing sleeve.

[0014] Furthermore, a groove is provided on the inner side of the sealing umbrella cover, and the hinge between the inner frame rod and the support rod is located in the groove.

[0015] Furthermore, the thickness of the sealed umbrella cover is 5-10 cm.

[0016] Furthermore, an anti-slip head is fixedly installed at the bottom of the exhaust pipe, and the anti-slip head is designed in a frustum.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. Through the arrangement of the structure of the present invention, while ensuring sealing, the outer diameter of the crane pipe can be made smaller than the inner diameter of the refueling port of the loading and unloading vehicle, and the crane pipe docking can be easily completed with high efficiency.

[0019] 2. The present invention unfolds the sealing umbrella cover to make it conical, and then the sealing umbrella cover is sealed against the refueling port and the crane pipe of the loading and unloading vehicle. When the vehicle body descends, the refueling port of the loading and unloading vehicle descends to squeeze the sealing umbrella cover, and at the same time pushes the inner frame rod to swing downward, so that the sealing umbrella cover and the crane pipe are squeezed tighter, which not only provides space for the vehicle body to descend, but also improves the sealing performance and has a good sealing effect.

[0020] 3. The present invention is stored in the crane pipe by the sealing umbrella cover, which not only does not affect the crane pipe docking, but also can seal the crane pipe when the crane pipe is not in use to prevent impurities from entering the crane pipe, and has a good protective effect.

[0021] 4. The present invention can control the swing angle of the support rod by rotating the limit screw, thereby controlling the distance between the fulcrum and the force point, changing the sealing strength, and is suitable for different filling environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of filling light oil according to the present invention;

[0024] Figure 3 It is an exploded view of the present invention;

[0025] Figure 4 It is a schematic diagram of the crane pipe structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the lifting sleeve rod and the sealing umbrella sleeve structure of the present invention;

[0027] Figure 6 The present invention Figure 5 The enlarged schematic diagram of part A in the middle;

[0028] Figure 7 This is a schematic diagram of the guide plates of the present invention being brought together;

[0029] Figure 8 It is a schematic diagram of the unfolding of the guide plate of the present invention.

[0030] Figure numerals: 1. crane pipe; 11. hinge; 12. first sealing sleeve; 13. second sealing sleeve; 2. guide plate; 21. pull rope; 22. pull ring; 3. mounting part; 31. clamp; 32. first electric telescopic rod; 33. second electric telescopic rod; 4. exhaust pipe; 41. anti-slip head; 5. lifting sleeve rod; 51. connecting part; 52. chassis; 53. hinge groove; 54. support rod; 55. inner frame rod; 56. nut block; 57. limit screw; 6. sealing umbrella cover. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] Embodiment 1, as Figure 1-Figure 8 As shown, an oil and gas recovery sealing device for a light oil loading and unloading vehicle comprises a crane pipe 1, the outer diameter of the crane pipe 1 is smaller than the inner diameter of the refueling port of the loading and unloading vehicle, four groups of hinged parts 11 are arranged in an annular manner at the bottom end of the crane pipe 1, and guide plates 2 are hinged inside the four groups of hinged parts 11, and the guide plates 2 can swing, an exhaust pipe 4 is fixedly installed inside the crane pipe 1, and the bottom end of the exhaust pipe 4 is lower than the bottom end of the crane pipe 1, and a lifting sleeve rod 5 is sleeved on the outer side of the exhaust pipe 4, and the lifting sleeve rod 5 can slide up and down along the exhaust pipe 4, and a chassis 52 is arranged at the bottom of the lifting sleeve rod 5, and a plurality of groups of hinged grooves 53 are arranged in an annular manner on the outer side of the chassis 52, and a support rod 54 is hinged inside the hinged groove 53;

[0033] It also includes a sealed umbrella cover 6, which has a plurality of groups of inner frame rods 55 arranged in an annular shape inside. The inner frame rods 55 are arranged corresponding to the hinge grooves 53. The middle part of the inner frame rods 55 is hinged to the top of the support rod 54. A nut block 56 is arranged at the bottom of the hinge groove 53. The internal thread of the nut block 56 is connected to a limiting screw 57. The limiting screw 57 is located on the side of the support rod 54 away from the lifting sleeve rod 5.

[0034] Move the crane pipe 1 to the refueling port of the tanker truck, ensure that the outlet of the crane pipe 1 is aligned with the refueling port of the tanker truck, then raise the boom of the crane pipe 1, align the joint of the crane pipe 1 with the refueling port of the tanker truck, ensure that the crane pipe joint and the refueling port of the tanker truck are completely connected, and there is no tilt or deviation, then insert the joint of the crane pipe 1 into the refueling port of the tanker truck. Due to the structural arrangement of the present invention, the outer diameter of the crane pipe 1 can be smaller than the inner diameter of the refueling port, so the plug-in can be completed quickly. After the plug-in is completed, control the lifting sleeve rod 5 to descend, the lifting sleeve rod 5 drives the connecting piece 51 to descend, the connecting piece 51 drives the support rod 54 to descend, and the support rod 54 drives the sealing umbrella cover 6 to descend through the inner skeleton rod 55. When the sealing umbrella cover 6 descends to the bottom of the guide plate 2, the sealing umbrella cover 6 is unfolded under the action of its own elastic force and is in the shape of a cone. Then control the guide plate 2 to swing inward, and multiple groups of guide plates 2 are brought together, and the guide plate 2 is in the shape of an inverted cone, as shown in the attached Figure 7 In the state shown, the lifting sleeve rod 5 is controlled to rise, the lifting sleeve rod 5 drives the connecting piece 51 to rise, the connecting piece 51 drives the support rod 54 to rise, and the support rod 54 drives the sealing umbrella sleeve 6 to rise through the inner frame rod 55. When the sealing umbrella sleeve 6 rises to the position of the guide plate 2, since the multiple groups of guide plates 2 are close together in an inverted cone shape, the multiple groups of guide plates 2 open the sealing umbrella sleeve 6 so that the sealing umbrella sleeve 6 can be smoothly sleeved on the crane pipe 1. When the sealing umbrella sleeve 6 blocks the oil port, it stops rising. At this time, the crane pipe 1 is filled with oil, and the contact position between the sealing umbrella sleeve 6 and the oil port and the crane pipe 1 is sealed. Excess oil and gas can be discharged through the exhaust pipe 4, and the contact position between the oil port and the sealing umbrella sleeve 6 is located on the inner side of the hinge between the inner frame rod 55 and the support rod 54. The support rod 54 is tilted outward, and the limit screw 57 is pressed on the support rod 54 to limit the outward swing angle of the support rod 54.

[0035] As the filling progresses, the weight of the oil tank increases, the oil tank presses down the vehicle, the oil tank will move down, the oil port drops relative to the sealing umbrella cover 6, the oil port squeezes the sealing umbrella cover 6, and the pressure point is located between the fulcrum of the inner frame rod 55 and the crane pipe 1, so the oil port pushes the inner frame rod 55 to swing downward, the inner frame rod 55 reduces the top opening of the sealing umbrella cover 6, and the sealing umbrella cover 6 is pressed tightly on the crane pipe 1, providing a buffer spacing while improving the sealing performance, which can effectively prevent oil leakage. It should be noted that the support rod 54 is tilted outward, and the limit screw 57 is pressed against it, and the pressure point is located at the inner frame rod 55 fulcrum and the crane pipe 1, the support rod 54 will not swing inward or outward, so the stable supporting force can be improved. After the filling is completed, the lifting sleeve rod 5 is controlled to descend, the lifting sleeve rod 5 drives the connecting piece 51 to descend, the connecting piece 51 drives the support rod 54 to descend, and the support rod 54 drives the sealing umbrella cover 6 to descend through the inner skeleton rod 55. When the sealing umbrella cover 6 descends to the bottom of the guide plate 2, the upper opening of the sealing umbrella cover 6 is closed under the action of its own elastic force. At this time, the guide plate 2 is controlled to swing outward, and the multiple groups of guide plates 2 are spread apart from each other to form a trumpet shape, as shown in the attached Figure 8 In the state shown, the lifting sleeve rod 5 is controlled to rise, the lifting sleeve rod 5 drives the connecting member 51 to rise, the connecting member 51 drives the support rod 54 to rise, the support rod 54 drives the sealing umbrella cover 6 to rise through the inner frame rod 55, and the sealing umbrella cover 6 enters the trumpet-shaped multiple groups of guide plates 2. As the sealing umbrella cover 6 continues to rise, the sealing umbrella cover 6 is squeezed and guided into the crane tube 1, so that the sealing umbrella cover 6 is stored in the crane tube 1, the crane tube 1 can be easily taken out, and it can be ensured that no impurities enter the interior of the crane tube 1 when not in use;

[0036] And according to the filling environment, the limit screw 57 is rotated, and the lifting and lowering of the limit screw 57 can change the expansion angle of the support rod 54. When the limit screw 57 is rotated upward, the outward expansion angle of the support rod 54 is reduced, and the fulcrum of the inner bone rod 55 is closer to the pressure point. At this time, the force arm of the downward pressure becomes shorter, and a small descending distance can achieve high sealing. When the limit screw 57 is rotated downward, the outward expansion angle of the support rod 54 increases, and the fulcrum of the inner bone rod 55 is away from the pressure point. At this time, the force arm of the downward pressure becomes longer, which can increase a sufficient buffer distance.

[0037] It should be noted that the present invention is mainly used in the filling environment of tank trucks. When filling the tank truck, a certain space is usually reserved, which is 5%-10%. This is to cope with the expansion of the oil caused by temperature changes, prevent excessive pressure, and ensure safety during transportation. The distance between the bottom end of the exhaust pipe 4 of the present invention and the crane pipe 1 is much smaller than the reserved space height, so the exhaust pipe 4 does not affect normal filling.

[0038] Embodiment 2, based on the above embodiment, further includes: a mounting member 3 is fixedly mounted on the top of the exhaust pipe 1, and the exhaust pipe 4 is fixedly mounted on the mounting member 3, so that the exhaust pipe 4 is easily installed.

[0039] Furthermore, a clamp 31 is provided at the bottom of the mounting member 3. This design facilitates the disassembly of the mounting member 3 without affecting the structure of the crane pipe 1.

[0040] Embodiment three, on the basis of the above embodiment, further includes: a first electric telescopic rod 32 is fixedly installed on the right side of the mounting member 3, a pull rope 21 is fixedly connected to the inner side of the guide plate 2, a pull ring 22 is fixedly installed at the bottom of the telescopic end of the first electric telescopic rod 32, the pull ring 22 is sleeved on the mounting member 3, the pull rope 21 passes through the crane pipe 1 and is fixedly connected to the bottom of the pull ring 22, and a torsion spring is arranged at the hinge of the guide plate 2.

[0041] By controlling the operation of the first electric telescopic rod 32, the first electric telescopic rod 32 drives the pull ring 22 to descend, the pull ring 22 relaxes the pull rope 21, and the guide plate 2 is unfolded under the action of the torsion spring. Conversely, the pull ring 22 drives the guide plates 2 to close together through the pull rope 21. The structure is simple, the pull rope 21 is made of steel wire rope, it is not easy to generate static electricity, and the transmission is stable.

[0042] Furthermore, a second sealing sleeve 13 is provided on the top of the crane pipe 1, and the pull rope 21 passes through the second sealing sleeve 13. This design can prevent oil leakage at the rope threading point of the crane pipe 1.

[0043] Embodiment 4, based on the above embodiment, further includes: a second electric telescopic rod 33 is fixedly installed on the top of the mounting member 3, the lifting sleeve rod 5 passes through the crane tube 1, and a connecting member 51 is fixedly installed on the top of the lifting sleeve rod 5, and the connecting member 51 is fixedly installed on the bottom end of the second electric telescopic rod 33.

[0044] By controlling the second electric telescopic rod 33 to operate, the second electric telescopic rod 33 drives the lifting sleeve rod 5 to move up and down.

[0045] Furthermore, a first sealing sleeve 12 is provided on the top of the crane pipe 1 , and the lifting sleeve rod 5 passes through the first sealing sleeve 12 to prevent oil leakage between the crane pipe 1 and the lifting sleeve rod 5 .

[0046] Embodiment 5, based on the above embodiment, further includes that a groove is opened on the inner side of the sealing umbrella cover 6, and the hinge between the inner frame rod 55 and the support rod 54 is located in the groove. Through this design, while fully wrapping the inner frame rod 55, it does not affect the connection between the inner frame rod 55 and the support rod 54.

[0047] Furthermore, the thickness of the sealing umbrella cover 6 is 5-10 cm. The sealing umbrella cover 6 is made of silicone material, which has good elasticity. When squeezed into the crane pipe 1, it is tighter and has a good sealing effect.

[0048] Embodiment 6, based on the above embodiment, further includes that an anti-slipping head 41 is fixedly installed at the bottom of the exhaust pipe 4, and the anti-slipping head 41 is designed as a frustum, through which the descending distance of the lifting sleeve rod 5 can be limited.

[0049] To sum up, the specific assembly steps of the present invention are: first, use the clamp 31 to fix the mounting part 3 on the crane pipe 1, then insert the exhaust pipe 4 into the crane pipe 1 through the first sealing sleeve 12, and fix the exhaust pipe 4 on the mounting part 3, then put the lifting sleeve 5 on the exhaust pipe 4 from the bottom of the exhaust pipe 4, and extend it through the first sealing sleeve 12. At this time, screw the anti-slip head 41 on the bottom of the exhaust pipe 4, and finally install the guide plate 2 on the hinge 11, and make the pull rope 21 pass through the second sealing sleeve 13 and fix it on the pull ring 22. Finally, the first electric telescopic rod 32 and the second electric telescopic rod 33 are driven and connected, and the assembly is convenient.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil and gas recovery sealing device for a light oil loading and unloading vehicle, comprising a crane pipe (1), characterized in that: The outer diameter of the lifting pipe (1) is smaller than the inner diameter of the refueling port of the loading and unloading vehicle. The bottom end of the lifting pipe (1) is provided with four groups of hinged parts (11) in an annular shape. The insides of the four groups of hinged parts (11) are hinged with guide plates (2), and the guide plates (2) can swing. An exhaust pipe (4) is fixedly installed inside the lifting pipe (1). The bottom end of the exhaust pipe (4) is lower than the bottom end of the lifting pipe (1). The outer side of the exhaust pipe (4) is sleeved with a lifting sleeve rod (5), and the lifting sleeve rod (5) can slide up and down along the exhaust pipe (4). The bottom of the lifting sleeve rod (5) is provided with a chassis (52), and the outer side of the chassis (52) is provided with multiple groups of hinged grooves (53) in an annular shape. The hinged groove (53) is hinged with a support rod (54) inside. The invention also comprises a sealing umbrella cover (6), wherein a plurality of groups of inner frame rods (55) are arranged in an annular shape inside the sealing umbrella cover (6), and the inner frame rods (55) are arranged corresponding to the hinge grooves (53), and the middle part of the inner frame rods (55) is hinged to the top of the support rod (54), and a nut block (56) is arranged at the bottom of the hinge groove (53), and the internal thread of the nut block (56) is connected to a limiting screw rod (57), and the limiting screw rod (57) is located on the side of the support rod (54) away from the lifting sleeve rod (5).

2. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 1 is characterized in that: A mounting member (3) is fixedly mounted on the top of the lift pipe (1), and the exhaust pipe (4) is fixedly mounted on the mounting member (3).

3. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 2 is characterized in that: A clamp (31) is provided at the bottom of the mounting member (3).

4. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 3 is characterized in that: A first electric telescopic rod (32) is fixedly installed on the right side of the mounting member (3), a pull rope (21) is fixedly connected to the inner side of the guide plate (2), a pull ring (22) is fixedly installed at the bottom of the telescopic end of the first electric telescopic rod (32), the pull ring (22) is sleeved on the mounting member (3), the pull rope (21) passes through the crane tube (1) and is fixedly connected to the bottom of the pull ring (22), and a torsion spring is arranged at the hinge of the guide plate (2).

5. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 4 is characterized in that: A second sealing sleeve (13) is provided on the top of the crane pipe (1), and the pull rope (21) passes through the second sealing sleeve (13).

6. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 3 is characterized in that: A second electric telescopic rod (33) is fixedly mounted on the top of the mounting member (3); the lifting sleeve rod (5) passes through the crane tube (1); and a connecting member (51) is fixedly mounted on the top of the lifting sleeve rod (5); and the connecting member (51) is fixedly mounted on the bottom end of the second electric telescopic rod (33).

7. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 6 is characterized in that: A first sealing sleeve (12) is provided on the top of the lifting pipe (1), and the lifting sleeve rod (5) passes through the first sealing sleeve (12).

8. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 1 is characterized in that: A groove is provided on the inner side of the sealing umbrella cover (6), and the hinged part between the inner frame rod (55) and the support rod (54) is located in the groove.

9. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 8, characterized in that: The thickness of the sealing umbrella cover (6) is 5-10 cm.

10. The oil and gas recovery sealing device for a light oil loading and unloading vehicle according to claim 1, characterized in that: An anti-slip head (41) is fixedly mounted on the bottom of the exhaust pipe (4), and the anti-slip head (41) is designed in the form of a frustum.

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