A bottom-loading heavy oil loading and parking system and its use method

Abstract

The present invention provides a bottom-loading heavy oil loading and docking system and a method of using the same, and relates to the technical field of heavy oil loading and transportation. The system mainly includes: a first loading oil line pipe, a second loading oil line pipe connected to the first loading oil line pipe, a first shut-off valve, a loading pump, a docking system pipeline, a second shut-off valve, a reflux pump, a male connector and a female connector; the first shut-off valve and the loading pump are arranged on the first loading oil line pipe; one end of the first loading oil line pipe is used to connect to an external loading oil manifold; the other end of the second loading oil line pipe is equipped with a female connector; the reflux pump and the second shut-off valve are arranged on the docking system pipeline, one end of the docking system pipeline is connected to the second loading oil line pipe, and the other end of the docking system pipeline is equipped with a male connector. The present invention realizes a bottom-loading loading method by cooperating with each other between the reflux pump, the shut-off valve, the male connector and the female connector, and can achieve zero leakage and zero pollution when loading and docking heavy oil, thereby improving the safety and environmental protection of heavy oil.

Description

Technical Field

[0001] The invention relates to the technical field of heavy oil loading and transportation, and in particular to a bottom-loading heavy oil loading and parking system and a use method thereof. Background Art

[0002] At present, most liquefied petroleum gas and refined oil loading and unloading vehicles adopt the bottom-loading crane pipe loading method. The API dry valve is used at the interface between the crane pipe and the tank truck to achieve automatic and leak-free loading. However, crude oil and heavy oil products are mostly loaded with top-loading crane pipes due to their high viscosity and poor fluidity. The top-loading crane pipe loading method requires loading and unloading workers to climb to a certain height before they can operate. If the operation is improper, they may fall and get injured, endangering personnel safety. At present, some bottom-loading crane pipe loading solutions are also adopted. This solution mainly installs a quick connector that matches the bottom of the train / car at the front end of the loading and unloading arm, and there is a shut-off valve at the rear end. After loading and unloading, the oil line is cut off. There is an open pipe section between the shut-off valve and the bottom of the train / car, which will retain some oil stains. The leaked heavy oil is polluting to a certain extent and is not friendly to the environment. Summary of the invention

[0003] The purpose of the present invention is to provide a bottom-loading heavy oil loading and docking system and a method for using the same. By adopting the bottom-loading loading method, zero leakage and zero pollution can be achieved during heavy oil loading and docking, thereby improving the safety and environmental protection of heavy oil loading and docking.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] In a first aspect, the present invention provides a bottom-loading heavy oil loading and docking system, comprising: a loading oil pipe, a first shut-off valve, a first electric heating, a loading pump, a docking system pipeline, a second shut-off valve, a second electric heating, a reflux pump, and a quick-connect dry valve; the quick-connect dry valve comprises a male connector and a female connector; the loading oil pipe is divided into two parts, namely a first loading oil pipe and a second loading oil pipe;

[0006] The first shut-off valve and the loading pump are arranged on the first loading oil pipe; the first electric heat tracing is arranged on the second loading oil pipe; one end of the first loading oil pipe is used to connect to an external loading oil manifold; the other end of the first loading oil pipe is connected to one end of the second loading oil pipe; the other end of the second loading oil pipe is provided with the female connector;

[0007] The reflux pump, the second electric heating and the second stop valve are arranged on the docking system pipeline, one end of the docking system pipeline is connected to the second loading oil pipeline, and the other end of the docking system pipeline is installed with a male connector.

[0008] Optionally, it also includes a check valve arranged on the docking system pipeline;

[0009] When the female connector and the male connector are connected, and the first stop valve is closed and the second stop valve is opened, the second loading oil line pipe and the docking system pipeline are connected to form a docking circulation loop;

[0010] The check valve is used to prevent the heavy oil in the parking circulation loop from flowing back.

[0011] Optionally, the reflux pump is used to transport the heavy oil in the parking circulation loop.

[0012] Optionally, the loading pump is used to transport the thick oil in the loading oil pipe under a set state; the set state is a state in which the female connector installed on the second loading oil pipe is connected to the male connector in the quick-connect dry valve on an external tank truck, and the second shut-off valve is closed and the first shut-off valve is opened.

[0013] Optionally, the male connector comprises a male connector valve body, a spring bushing arranged in the valve cavity of the male connector valve body, a movable valve sleeve is sleeved in the spring bushing, and the end of the movable valve sleeve is connected to a movable valve flap for closing the liquid inlet of the valve cavity of the male connector valve body; a return spring is arranged in the spring bushing and the movable valve sleeve; one end of the return spring abuts against the bottom of the spring bushing, and the other end abuts against the movable valve flap; a vent hole is correspondingly provided at the connection between the spring bushing and the male connector valve body, and the vent hole is connected to the inside of the spring bushing; a screw is provided on the outer wall of the male connector valve body The spiral guide groove includes a male connector valve body and a spring bushing arranged in the valve cavity of the male connector valve body, a movable valve sleeve is sleeved in the spring bushing, and the end of the movable valve sleeve is connected to a movable valve flap for closing the liquid inlet of the valve cavity of the male connector valve body; a return spring is arranged in the spring bushing and the movable valve sleeve; one end of the return spring abuts against the bottom of the spring bushing, and the other end abuts against the movable valve flap; a vent hole is correspondingly provided at the connection between the spring bushing and the male connector valve body, and the vent hole is connected to the inside of the spring bushing; a spiral guide groove is provided on the outer wall of the male connector valve body.

[0014] Optionally, it also includes a male connector plugging cap for plugging the male connector;

[0015] The male joint plugging cap includes a male joint plugging cap, the male joint plugging cap is provided with a snap-fitting groove, the inner wall of the snap-fitting groove is provided with a plugging cap roller that cooperates with the spiral guide groove, the plugging cap roller is rotatably connected in the snap-fitting groove through the plugging cap roller shaft; the bottom of the snap-fitting groove is provided with a scraper mounting groove, a plugging cap connecting plate is installed in the scraper mounting groove, the plugging cap connecting plate is provided with a plugging cap scraper capable of scraping dirt on the inner wall of the liquid inlet of the valve cavity of the male joint valve body and the movable valve disc on the side facing away from the scraper mounting groove, the plugging cap scraper is provided with a plugging cap connecting rod extending out of the female joint plugging cap on the side facing the scraper mounting groove, a plugging cap connecting rod is provided with a plugging cap handle, the plugging cap handle and the plugging cap connecting rod are fixed by a plugging cap anti-rotation pin, and a plugging cap reset wave spring is provided between the plugging cap connecting rod and the scraper mounting groove.

[0016] Optionally, the female connector comprises a female connector valve body, a liquid outlet sleeve of the valve cavity of the female connector valve body is provided with a sliding valve sleeve, and a third wear-resistant descaling ring is provided between the sliding valve sleeve and the valve cavity of the female connector valve body; a support frame is provided on the inner wall of the valve cavity of the female connector valve body, a fixed valve stem is connected to the support frame, and an end of the fixed valve stem is provided with a fixed valve disc for closing the liquid outlet of the sliding valve sleeve; a shell for connecting with the male connector is sleeved on the outer wall of the female connector valve body, and the shell is rotatably connected to the outer wall of the female connector valve body; a wear-resistant sleeve is provided between the shell and the female connector valve body, a fourth wear-resistant descaling ring is provided between the shell and the sliding valve sleeve, and a return spring is provided between the wear-resistant sleeve and the fourth wear-resistant descaling ring; a joint roller cooperating with the spiral guide groove is provided on the inner wall of the shell, the joint roller is rotatably connected to the inner wall of the shell through a joint roller shaft, and a handle is fixedly connected to the outer wall of the shell.

[0017] Optionally, it also includes a female connector plug for plugging the female connector;

[0018] The female joint plug includes a female joint plug, the outer wall of the plugging end of the female joint plug is provided with a limiting semi-ring groove which cooperates with the joint roller, the plugging end of the female joint plug is provided with an installation groove, a plugging connecting plate is provided in the installation groove, the plugging connecting plate is fixedly connected to a plugging scraper which can scrape dirt on the inner wall of the liquid outlet of the shell, the sliding valve sleeve end and the fixed valve disc end on one side of the plugging connecting plate facing the plugging end, a plugging connecting rod extending out of the female joint plug is provided on the side of the plugging connecting plate facing away from the plugging end, the end of the plugging connecting rod is covered with a plugging handle and fixed by a plugging anti-rotation pin, and a plugging reset wave spring is provided on the side of the plugging connecting plate facing away from the plugging end and at the bottom of the installation groove.

[0019] In a second aspect, the present invention provides a method for using the bottom-loading heavy oil loading and parking system according to the first aspect, the method comprising a loading part and a parking part;

[0020] In the loading part, one end of the first loading oil pipe is connected to the external loading oil manifold, the female connector installed on the second loading oil pipe is connected to the male connector in the quick-connect dry valve on the external tank truck, the second shut-off valve, the second electric heat tracing and the reflux pump are closed, and the first shut-off valve, the first electric heat tracing and the loading pump are opened to complete the loading operation;

[0021] When the outside temperature is lower than the set threshold value in the docking part, the female connector installed on the second loading oil line pipe is connected to the male connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, and the second shut-off valve, the second electric heating and the reflux pump are opened to connect the second loading oil line pipe and the docking system pipeline to form a docking circulation loop, and to prevent the heavy oil in the docking circulation loop from condensing.

[0022] Optionally, also include:

[0023] When in the docking part and the outside temperature is not lower than the set threshold, the female connector installed on the second loading oil line pipe is connected to the male connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, and the second shut-off valve and the second electric heating are opened to connect the second loading oil line pipe and the docking system pipeline to form a docking circulation loop, and prevent the heavy oil in the docking circulation loop from condensing.

[0024] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0025] The present invention provides a bottom-loading heavy oil loading and docking system and a method for using the same. During loading, the tank truck is loaded by a loading pump and a loading oil pipeline. After loading is completed, a female connector and a male connector are connected to form a docking circulation loop. When the outside temperature is low, a reflux pump is used to provide power, and a second electric heating is used to allow the heavy oil to circulate in the docking circulation loop, which can effectively prevent the heavy oil from condensing and blocking the pipeline in a quick-connect dry valve and a pipe system; when the outside temperature is high, the second electric heating is used to reduce the viscosity of the heavy oil to prevent the heavy oil from condensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the quick-connect dry valve of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the male connector of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a female connector of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the support frame of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the quick-connect dry valve after connection of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the male connector plugging cap of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the male connector plugging cap and the male connector after being connected to each other in the present invention;

[0034] Figure 8 It is a structural schematic diagram of the female connector being blocked according to the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure after the female connector of the present invention is blocked and connected to the female connector;

[0036] Fig.10 The present invention is a structural schematic diagram of a bottom-loading heavy oil loading and parking system.

[0037] Description of the accompanying drawings: 1. male connector; 2. male connector valve body; 3. spring bushing; 4. movable valve sleeve; 5. movable valve flap; 6. reset spring; 7. vent hole; 8. guide valve stem; 9. conical limiting boss; 10. first wear-resistant descaling ring; 11. second wear-resistant descaling ring; 12. reduced diameter section; 13. expanded diameter section; 14. spiral guide groove; 15. first sealing ring of male connector; 16. second sealing ring of male connector; 17. third sealing ring of male connector; 18. fourth sealing ring of male connector; 19. male connector locking screw; 20. male connector sealing pad; 2 1. Female connector; 22. Female connector valve body; 23. Sliding valve sleeve; 24. Third wear-resistant descaling ring; 25. Support frame; 26. Fixed valve stem; 27. Fixed valve disc; 28. Housing; 29. ​​Wear-resistant sleeve; 30. Fourth wear-resistant descaling ring; 31. Return spring; 32. Connector roller; 33. Connector roller; 34. Handle; 35. Conical limiting structure; 36. Nut; 37. Annular slide groove; 38. Steel ball; 39. First receiving groove; 40. First clamping screw; 41. Second receiving groove; 42. Third receiving groove; 43. Second clamping screw ; 44. Female joint first sealing ring; 45. Female joint second sealing ring; 46. Female joint third sealing ring; 47. Dust ring; 48. Female joint sealing gasket; 49. Female joint locking screw; 50. Male joint retaining ring; 51. Male joint plugging cap; 52. Snap-fit ​​groove; 53. Plug cap roller; 54. Plug cap roller; 55. Scraper installation groove; 56. Plug cap connecting plate; 57. Plug cap scraper; 58. Plug cap connecting rod; 59. Plug cap handle; 60. Plug cap anti-rotation pin; 61. Plug cap reset wave spring; 62. Plug cap retaining ring; 63. Plug cap first sealing ring; 64. The second sealing ring of the plugging cap; 65. The female joint plugging; 66. The limiting semi-ring groove; 67. The mounting groove; 68. The plugging connecting plate; 69. The plugging scraper; 70. The plugging connecting rod; 71. The plugging handle; 72. The plugging anti-rotation pin; 73. The plugging reset wave spring; 74. The chain; 75. The crane pipe; 76. The loading oil line pipe; 77. The first electric heating; 78. The first shut-off valve; 79. The loading pump; 80. The loading oil manifold; 81. The second shut-off valve; 82. The second electric heating; 83. The docking system pipeline; 84. The check valve; 85. The reflux pump. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0040] This embodiment provides a male connector, such as Figures 1 to 9 As shown, the male connector 1 includes a male connector valve body 2 and a spring bushing 3; the spring bushing 3 is fixed on the inner wall of the valve cavity of the male connector valve body 2, the spring bushing 3 is coaxially arranged with the valve cavity of the male connector valve body 2, and an opening is arranged at one end of the spring bushing 3 facing the liquid inlet of the valve cavity of the male connector valve body 2 near the liquid outlet of the valve cavity of the male connector valve body 2. The spring bushing 3 is sleeved with a movable valve sleeve 4 through the opening, the outer wall of the movable valve sleeve 4 is tightly fitted with the inner wall of the spring bushing 3, a male connector second sealing ring 16 is arranged between the opening of the spring bushing 3 and the movable valve sleeve 4, and a male connector third sealing ring 17 and a male connector sealing gasket 20 are arranged between the spring bushing 3 and the male connector valve body 2. The movable valve sleeve 4 is fixedly connected with a movable valve flap 5 at one end near the liquid inlet of the valve cavity. The movable valve sleeve 4 and the movable valve flap 5 can be integrally formed. The movable valve sleeve 4 can slide axially in the spring bushing 3. When the movable valve sleeve 4 slides out of the spring bushing 3, the liquid inlet of the valve cavity of the male joint valve body 2 can be closed. When the movable valve sleeve 4 slides into the spring bushing 3, the liquid inlet of the valve cavity of the male joint valve body 2 can be opened. At this time, refer to Figure 5As shown, a liquid outlet passage is formed between the movable valve sleeve 4, the movable valve disc 5, the spring bushing 3 and the valve cavity of the male joint valve body 2 for crude oil to pass through. A return spring 6 is arranged inside the spring bushing 3 and the movable valve sleeve 4, one end of the return spring 6 abuts against the bottom of the spring bushing 3, and the other end abuts against the movable valve disc 5, so as to automatically push the movable valve disc 5 back to close the liquid inlet of the valve cavity of the male joint valve body 2 after the crude oil flows. Of course, the return spring 6 can also be directly fixedly connected to the bottom of the spring bushing 3 and the movable valve disc 5. The spring bushing 3 is provided with a vent hole 7, and the connection between the male joint valve body 2 and the spring bushing 3 is also provided with a vent hole 7, and the two vent holes 7 are exactly corresponding to each other and then communicated with the inside of the spring bushing 3, so that whether the movable valve sleeve 4 slides inside the spring bushing 3 or outside, the internal chambers of the movable valve sleeve 4 and the spring bushing 3 are always equal to the external pressure, thereby avoiding the positive and negative pressure in the internal chambers of the movable valve sleeve 4 and the spring bushing 3, which makes it difficult for the movable valve sleeve 4 to slide inside the spring bushing 3, or the movable valve sleeve 4 is difficult to slide out from the inside of the spring bushing 3. At the same time, because the reset spring 6 is located in the internal chambers of the movable valve sleeve 4 and the spring bushing 3, when the crude oil flows through the liquid outlet channel, it will not cause any pollution to the reset spring 6, thereby avoiding the problem of failure of the reset spring 6 due to crude oil condensation. A spiral guide groove 14 is provided on the outer wall of the liquid inlet end of the male connector valve body 2, which is used to connect with the female connector 21. Preferably, there are three spiral guide grooves 14 in total. The liquid outlet of the valve cavity of the male connector valve body 2 is provided with an internal thread, which is used to be threadedly connected to the liquid inlet of the tank truck. Preferably, a male connector locking screw 19 is also provided on the liquid outlet of the valve cavity of the male connector valve body 2. Tightening the male connector locking screw 19 can stably connect the liquid outlet of the valve cavity of the male connector valve body 2 to the liquid inlet of the tank truck.

[0041] Further, in this embodiment, a guide valve stem 8 is coaxially arranged in the movable valve sleeve 4, and a sliding through hole is arranged at the bottom of the spring bushing 3. One end of the guide valve stem 8 is threadedly connected to the movable valve disc 5, and the other end passes through and is slidably connected in the sliding through hole.

[0042] Further, in this embodiment, a first wear-resistant descaling ring 10 is provided on the spring bushing 3, and the first wear-resistant descaling ring 10 is located at the opening of the spring bushing 3 and at the front end of the second sealing ring 16 of the male joint. When the movable valve sleeve 4 slides into the spring bushing 3, the first wear-resistant descaling ring 10 can scrape the outer wall of the movable valve sleeve 4. A second wear-resistant descaling ring 11 is provided on the sliding through hole, and the second wear-resistant descaling ring 11 is located at the rear end of the fourth sealing ring 18 of the male joint. When the guide valve stem 8 moves toward the liquid inlet of the valve cavity of the male joint valve body 2, the second wear-resistant descaling ring 11 can scrape the crude oil dirt on the outer wall of the guide valve stem 8.

[0043] Furthermore, in the present embodiment, a conical limiting boss 9 is provided at the liquid inlet of the valve cavity of the male connector valve body 2, and the conical limiting boss 9 can prevent the movable valve flap 5 from extending out of the liquid inlet of the valve cavity of the male connector valve body 2. Therefore, the contact surface between the corresponding movable valve flap 5 and the conical limiting boss 9 is also a conical structure, and a male connector first sealing ring 15 is provided on the contact surface of the two.

[0044] In this embodiment, Figures 1 to 9 As shown, the chamber of the spring bushing 3 includes a reduced diameter section 12 and an expanded diameter section 13, and the inner diameter of the expanded diameter section 13 is larger than the inner diameter of the reduced diameter section 12. The movable valve sleeve 4 is sleeved on the reduced diameter section 12, so the outer diameter of the movable valve sleeve 4 matches the inner diameter of the reduced diameter section 12, and the vent hole 7 is connected with the expanded diameter section 13. When the movable valve sleeve 4 moves toward the expanded diameter section 13, because the inner diameter of the expanded diameter section 13 is larger than the outer diameter of the movable valve sleeve 4, the movable valve sleeve 4 will not block the vent hole 7. Example 2

[0045] This embodiment discloses a male connector plug cap, such as Figures 1 to 9As shown, the male connector 1 used for sealing Example 1 includes a male connector plugging cap 51, a snap-fit ​​groove 52 is provided on the male connector plugging cap 51, a plugging cap roller 54 is passed through the inner wall of the snap-fit ​​groove 52, the end of the plugging cap roller 54 located on the inner wall of the snap-fit ​​groove 52 is rotatably connected to a plugging cap roller 53, the end of the plugging cap roller 54 extending out of the outer wall of the male connector plugging cap 51 is provided with a groove, a plugging cap retaining ring 62 is sleeved in the groove to prevent the plugging cap roller 54 from escaping from the inner wall of the snap-fit ​​groove 52, the plugging cap roller 53 is screwed into the spiral guide groove 14, and rotated into place, the male connector plugging cap 51 can be buckled on the outer wall of the male connector valve body 2. The bottom of the buckling groove 52 is concave with a scraper installation groove 55, a plugging cap connecting plate 56 is installed in the scraper installation groove 55, and a plugging cap scraper 57 is arranged on the outside of the plugging cap connecting plate 56. When the male joint plugging cap 51 is buckled on the outer wall of the male joint valve body 2, the plugging cap scraper 57 just contacts the end face of the movable valve disc 5 and the inner wall of the valve cavity liquid inlet of the male joint valve body 2. A plugging cap reset wave spring 61 is arranged between the inner side of the plugging cap connecting plate 56 and the scraper installation groove 55. When the male joint plugging cap 51 is removed, the compressed plugging cap scraper 57 can automatically reset under the action of the plugging cap reset wave spring 61. The bottom of the scraper installation groove 55 is provided with a plugging cap through hole, and the inner side of the plugging cap connecting plate 56 is fixedly connected with a plugging cap connecting rod 58. The end of the plugging cap connecting rod 58 extends out of the male joint plugging cap 51 through the plugging cap through hole and is connected to the plugging cap handle 59. The plugging cap handle 59 and the plugging cap connecting rod 58 are plugged with a plugging cap anti-rotation pin 60 to prevent the plugging cap handle 59 and the plugging cap connecting rod 58 from rotating relative to each other. A plugging cap first sealing ring 63 is provided between the end of the plugging cap connecting rod 58 and the plugging cap through hole. An annular groove is also provided at the bottom of the buckling groove 52, and an annular protrusion is formed between the annular groove and the scraper installation groove 55. After the buckling groove 52 is buckled on the outer wall of the male joint valve body 2, the end face of the annular protrusion will fit with the end of the liquid inlet of the male joint valve body 2, and a plugging cap second sealing ring 64 is provided on the fitting surface.

[0046] When in use, first buckle the buckling groove 52 of the male connector plugging cap 51 on the outer wall of the male connector valve body 2, and screw the plugging cap roller 53 into the head end of the spiral guide groove 14, then manually rotate the plugging cap handle 59 clockwise, and the plugging cap roller 53 is screwed into the tail end of the spiral guide groove 14 to achieve locking, and the male connector plugging cap 51 completely seals the valve cavity liquid inlet of the male connector valve body 2, thereby achieving the function of dustproof and anti-leakage. During the removal process of the male connector plugging cap 51, rotate the plugging cap handle 59 180 degrees counterclockwise, and the plugging cap scraper 57 can scrape the end face of the movable valve flap 5 and the inner wall of the valve cavity liquid inlet of the male connector valve body 2 to remove the dirt on the end face of the movable valve flap 5, and continue to rotate it for a certain angle to remove the male connector plugging cap 51, and then it can be connected to the female connector 21 for operation. Example 3

[0047] This embodiment provides a quick-connect dry valve, such as Figures 1 to 9As shown, it includes a female connector 21 and the male connector 1 in Example 1; the female connector 21 includes a female connector valve body 22, the liquid outlet sleeve of the valve cavity of the female connector valve body 22 is provided with a sliding valve sleeve 23, the inner wall of the sliding valve sleeve 23 is tightly fitted with the inner wall of the valve cavity of the female connector valve body 22, the sliding valve sleeve 23 can slide in the valve cavity of the female connector valve body 22, and a third wear-resistant descaling ring 24 and a female connector first sealing ring 44 are provided between the sliding valve sleeve 23 and the valve cavity of the female connector valve body 22, the third wear-resistant descaling ring 24 is fixed on the sliding valve sleeve 23, and when the sliding valve sleeve 23 moves from the liquid inlet of the valve cavity of the female connector valve body 22 to the liquid outlet, it can scrape off the crude oil dirt on the inner wall of the valve cavity of the female connector valve body 22. A support frame 25 is fixedly connected to the inner wall of the valve cavity of the female joint valve body 22, and a fixed valve stem 26 coaxially arranged with the sliding valve sleeve 23 is provided in the middle of the support frame 25. A fixed valve flap 27 is fixedly connected to the end of the fixed valve stem 26. When the sliding valve sleeve 23 moves toward the liquid outlet of the valve cavity, the fixed valve flap 27 can close the liquid outlet of the sliding valve sleeve 23. A female joint third sealing ring 46 is sleeved on the outer wall of the liquid outlet of the sliding valve sleeve 23. The liquid inlet of the valve cavity of the female joint valve body 22 is provided with an internal thread for threaded connection with the end of a hose or a crane pipe. A female joint locking screw 49 is provided on the inner wall of the liquid inlet of the valve cavity of the female joint valve body 22. Tightening the female joint locking screw 49 can lock the female joint valve body 22 to connect with the hose; a female joint sealing gasket 48 is provided at the liquid inlet of the valve cavity of the female joint valve body 22 for sealing with the hose. An outer shell 28 is sleeved on the outer wall of the female joint valve body 22, and the outer shell 28 is rotatably connected to the outer wall of the female joint valve body 22. The outer shell 28 can rotate but will not move axially. A dust ring 47 is provided between the inner wall of the outer shell 28 and the outer wall of the female joint valve body 22. A wear-resistant sleeve 29 is provided between the outer shell 28 and the female joint valve body 22, and a fourth wear-resistant descaling ring 30 is provided between the outer shell 28 and the sliding valve sleeve 23. The fourth wear-resistant descaling ring 30 is fixed on the outer wall of the sliding valve sleeve 23 and can remove dirt from the inner wall of the outer shell 28. A spring accommodating chamber is formed between the wear-resistant sleeve 29, the fourth wear-resistant descaling ring 30, the outer shell 28 and the sliding valve sleeve 23, and a return spring 31 is provided in the spring accommodating chamber. The return spring 31 is sleeved on the sliding valve sleeve 23 and the female joint valve body 22, and one end of the return spring 31 is connected to the first spring 31. The fourth wear-resistant descaling ring 30 is abutted, and the other end is abutted with the wear-resistant sleeve 29. The return spring 31 can make the sliding valve sleeve 23 slide toward the liquid outlet of the female joint valve body 22 when the female joint 21 and the male joint 1 are disconnected, and cooperate with the fixed valve disc 27 to close. When the sliding valve sleeve 23 slides toward the liquid inlet of the female joint valve body 22, the valve cavity of the female joint valve body 22, the female joint valve body 22 and the shell 28 form a liquid inlet channel, and the liquid inlet channel is connected with the valve cavity liquid inlet of the female joint valve body 22 and the liquid outlet of the shell 28. The fourth wear-resistant descaling ring 30 is provided with a through hole, which can make the spring accommodating chamber always connected with the outside world, avoiding positive and negative pressure in the spring accommodating chamber, which affects the compression and rebound of the return spring 31.A joint roller 33 is provided on the inner wall of the housing 28. One end of the joint roller 33 that penetrates the inner wall of the housing 28 is rotatably connected to a joint roller 32. A groove is provided at the end of the joint roller 33 that passes through the outer wall of the housing 28. A male joint retaining ring 50 is sleeved in the groove to prevent the joint roller 33 from detaching from the inner wall of the housing 28. A handle 34 is fixedly connected to the outer wall of the housing 28.

[0048] refer to Figure 1 and Figure 5 , male connector 1 and female connector 21 from closed to open state:

[0049] The female connector 21 at the end of the lifting hose or the lifting pipe is connected to the male connector 1 on the liquid inlet of the tank truck, and the handle 34 is pushed to align the connector roller 32 on the female connector 21 with the starting position of the spiral guide groove 14 on the outer wall of the male connector 1. The handle 34 is pulled clockwise to drive the shell 28 to rotate 120 degrees clockwise. The connector roller 32 moves inward along the spiral guide groove 14, and the male connector valve body 2 will push the sliding valve sleeve 23 to move. At the same time, the fixed valve flap 27 pushes the movable valve flap 5 to move, so that the female connector 21 and the male connector 1 are opened at the same time. At this time, the quick-connect dry valve is in a fully open and self-locking working state. The crude oil can flow from the liquid inlet channel of the female connector 21 into the liquid outlet channel of the male connector 1, and flow into the tank truck from the liquid outlet, realizing the loading and unloading operation of the liquid medium.

[0050] refer to Figure 1 and Figure 5 , the male connector 1 and the female connector 21 change from the open state to the closed state:

[0051] When the loading and unloading operation is completed, the handle 34 is pulled counterclockwise to drive the housing 28 to rotate 120 degrees counterclockwise, and the housing 28 moves outward along the spiral guide groove 14 through the joint roller 32, and the fixed valve flap 27 in the female joint 21 gradually moves outward. At the same time, the movable valve flap 5 on the male joint 1 moves outward together with the fixed valve flap 27 under the action of the return spring 6. At the same time, the sliding valve sleeve 23 in the female joint 21 also gradually moves outward under the action of the return spring 31 and closes with the fixed valve flap 27, finally realizing the simultaneous closure of the female joint 21 and the male joint 1; then the handle 34 is pulled outward to completely disengage the female joint 21 and the male joint 1, and the quick dry valve is in a fully closed non-working state.

[0052] In this embodiment, Figures 1 to 9 As shown, one end of the fixed valve stem 26 extends out of the liquid outlet end of the sliding valve sleeve 23 and is provided with a fixed valve flap 27. The fixed valve flap 27 is provided with a conical limiting structure 35 to prevent the sliding valve sleeve 23 from sliding out of the male joint valve body 2. The matching contact surface between the sliding valve sleeve 23 and the conical limiting structure 35 is also a conical structure, and the contact surface between the sliding valve sleeve 23 and the conical limiting structure 35 is provided with a female joint second sealing ring 45. Figure 4As shown, the support frame 25 is a handwheel-like structure, and a threaded hole is provided in the middle of the support frame 25. The other end of the fixed valve stem 26 is used to be threadedly connected to the threaded hole and fastened by a nut 36.

[0053] In this embodiment, Figures 1 to 9 As shown, an annular groove 37 is provided on the outer wall of the female connector valve body 22, and a first receiving groove 39 is provided on the inner wall of the shell 28 at a position corresponding to the annular groove 37. The first receiving groove 39 is circumferentially arranged on the inner wall of the shell 28. The first receiving groove 39 contains a steel ball 38. The steel ball 38 is slidably connected in the annular groove 37 and is compressed by a first clamping screw 40 on the outer wall of the shell 28 to ensure that the female connector valve body 22 and the shell 28 can withstand the corresponding axial force but will not produce axial displacement, so that they can rotate relative to each other. A second receiving groove 41 is provided on the handle 34, and a third receiving groove 42 is provided on the shell 28 at a position corresponding to the second receiving groove 41. The second receiving groove 41 and the third receiving groove 42 are provided with steel balls 38 and are compressed by a second clamping screw 43 on the handle 34. Preferably, there are three second receiving grooves 41 and three third receiving grooves 42, that is, the handle 34 is fixedly connected to the shell 28 as a whole through three steel balls 38.

[0054] In this embodiment, the large parts of the quick-connect dry valve are made of aluminum, which is very light and easy to operate under the balance force of the hose, especially the crane spring cylinder, so the labor intensity is low. The rubber seals inside the quick-connect dry valve are made of fluorinated rubber, which has higher wear resistance and corrosion resistance and long service life. Example 4

[0055] This embodiment provides a female connector plug, such as Figures 1 to 9 As shown, it is used to seal the female connector 21 in the quick-connect dry valve of Example 3, including a female connector plug 65, which is inserted into the liquid outlet of the shell 28 of the female connector 21. A limiting semi-annular groove 66 is provided on the outer wall of the inserted end of the female connector plug 65. The limiting semi-annular groove 66 is used to cooperate with the connector roller 32. The connector roller 32 is locked after rotating 180 degrees from the starting position of the limiting semi-annular groove 66. The plugging end of the female joint plug 65 is provided with a mounting groove 67, and a plugging connecting plate 68 is provided in the mounting groove 67. A plugging scraper 69 is fixedly connected to the outer side of the plugging connecting plate 68. The plugging scraper 69 can scrape the inner wall of the liquid outlet of the housing 28, the end of the sliding valve sleeve 23 and the end of the fixed valve disc 27. A plugging connecting rod 70 is provided on the inner side of the plugging connecting plate 68. The plugging connecting rod 70 extends out of the mounting groove 67 and the female joint plug 65, and a plugging handle 71 is sleeved on the end of the plugging connecting rod 70. The plugging handle 71 and the plugging connecting rod 70 are fixed by a plugging anti-rotation pin 72. A plugging reset wave spring 73 is provided between the inner side of the plugging connecting plate 68 and the bottom of the mounting groove 67. Reference Fig. 9As shown, the female connector plug 65 may be connected to the housing 28 by a chain 74 to prevent loss.

[0056] When in use, align the female connector plug 65 with the liquid outlet of the housing 28 of the female connector 21, and push the connector roller 32 axially into the starting position of the limiting semi-annular groove 66, and then manually rotate the plug handle 71 clockwise. During the rotation, the plug scraper 69 contacts the end surface of the fixed valve disc 27 and the sliding valve sleeve 23 and rotates 180 degrees for cleaning. Continue to rotate a certain angle to drive the connector roller 32 to run to the last position in the limiting semi-annular groove 66 and self-lock, so as to prevent dust and leakage during transportation. During the disassembly process of the female connector plug 65, rotate the plug handle 71 180 degrees counterclockwise to remove dirt from the fixed valve disc 27 and the sliding valve sleeve 23 for the second time, and continue to rotate a certain angle to remove the female connector plug 65, so as to connect with the male connector 1. Example 5

[0057] Based on the description of Embodiment 1 to Embodiment 4, this embodiment provides Fig.10 A bottom-loading heavy oil loading and docking system shown in the figure mainly includes: a loading oil pipe 76, a first shut-off valve 78, a first electric heat tracing 77, a loading pump 79, a docking system pipeline 83, a second shut-off valve 81, a second electric heat tracing 82, a reflux pump 85 and a quick-connect dry valve; the quick-connect dry valve includes a male connector 1 and a female connector 21; the loading oil pipe is divided into two parts, namely a first loading oil pipe and a second loading oil pipe.

[0058] The first shut-off valve 78 and the loading pump 79 are arranged on the first loading oil circuit pipe; one end of the first loading oil circuit pipe is used to connect to the external loading oil manifold 80; the other end of the first loading oil circuit pipe is connected to one end of the second loading oil circuit pipe; the other end of the second loading oil circuit pipe is connected to one end of the crane pipe 75; one end of the crane pipe 75 is installed with a male connector 1; the first electric heating 77 is arranged on the second loading oil circuit pipe.

[0059] The reflux pump 85, the second electric heating 82 and the second shut-off valve 81 are arranged on the docking system pipeline 83. One end of the docking system pipeline 83 is connected to the second loading oil pipeline, and the other end of the docking system pipeline 83 is also connected to the female connector 21 through a crane pipe.

[0060] During loading, the tank truck is loaded through the loading pump 79 and the loading oil line pipe 76. After loading is completed, when the outside temperature is low, the female connector 21 and the male connector 1 are connected, the first shut-off valve 78 is closed and the second shut-off valve 81 is opened, and the second loading oil line pipe and the docking system pipeline 83 are connected to form a docking circulation loop, and the reflux pump 85 provides power, and the second electric heating 82 is used to make the heavy oil circulate in the pipe, which can effectively prevent the heavy oil from condensing and blocking the pipeline in the quick-connect dry valve and the pipeline system. When the outside temperature is high, the viscosity of the heavy oil is reduced by the second electric heating 82 to prevent the heavy oil from condensing. This embodiment can achieve zero leakage and zero pollution when the heavy oil is loaded and docked, and improve the safety and environmental protection of the heavy oil when loading and docking.

[0061] Furthermore, the present embodiment further comprises a check valve 84 disposed on the docking system pipeline; the check valve 84 is used to prevent the heavy oil in the docking circulation loop from flowing back. The reflux pump 85 is used to transport the heavy oil in the docking circulation loop.

[0062] Furthermore, the loading pump 79 described in this embodiment is used to transport the thick oil in the loading oil pipe under a set state; wherein the set state is a state in which the female connector installed on the second loading oil pipe is connected to the male connector in the quick-connect dry valve on the external tank truck, and the second shut-off valve is closed and the first shut-off valve is opened. Example 6

[0063] This embodiment provides a method for using the bottom-loading heavy oil loading and parking system described in Embodiment 5. The method includes a loading part and a parking part, which are as follows:

[0064] In the loading part, one end of the first loading oil circuit pipe is connected to the external loading oil manifold, the female connector installed on the second loading oil circuit pipe is connected to the male connector in the quick-connect dry valve on the external tank truck, the second shut-off valve, the second electric heating and the reflux pump are closed, and the first shut-off valve, the first electric heating and the loading pump are opened to complete the loading operation.

[0065] When the outside temperature is lower than the set threshold value in the docking part, the female connector installed on the second loading oil line pipe is connected to the male connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, and the second shut-off valve, the second electric heating and the reflux pump are opened to connect the second loading oil line pipe and the docking system pipeline to form a docking circulation loop, and to prevent the heavy oil in the docking circulation loop from condensing.

[0066] When the docking portion is in the state where the outside temperature is not lower than a set threshold, the female connector installed on the second loading oil line pipe is connected to the male connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, the second shut-off valve and the second electric heating are opened, and the second loading oil line pipe is connected to the docking system pipeline to form a docking circulation loop. The viscosity of the heavy oil can be reduced by electric heating to prevent the heavy oil from condensing, and the condensation of the heavy oil in the docking circulation loop can be prevented.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A bottom-loading heavy oil loading and parking system, characterized in that: include: A loading oil pipe, a first shut-off valve, a first electric heat trace, a loading pump, a docking system pipe, a second shut-off valve, a second electric heat trace, a reflux pump, and a quick-connect dry valve; the quick-connect dry valve includes a male connector and a female connector; the loading oil pipe is divided into two parts, namely, a first loading oil pipe and a second loading oil pipe; The first shut-off valve and the loading pump are arranged on the first loading oil pipe; the first electric heat tracing is arranged on the second loading oil pipe; one end of the first loading oil pipe is used to connect to an external loading oil manifold; the other end of the first loading oil pipe is connected to one end of the second loading oil pipe; the other end of the second loading oil pipe is provided with the male connector; The reflux pump, the second electric heating and the second shut-off valve are arranged on the docking system pipeline, one end of the docking system pipeline is connected to the second loading oil pipeline, and the other end of the docking system pipeline is installed with a female connector; The bottom-loading heavy oil loading and parking system further comprises a check valve arranged on the parking system pipeline; When the female connector and the male connector are connected, and the first shut-off valve is closed and the second shut-off valve is opened, the second loading oil line pipe and the docking system pipeline are connected to form a docking circulation loop; The check valve is used to prevent the heavy oil in the parking circulation loop from flowing back; The loading pump is used to transport the thick oil in the loading oil pipe under a set state; the set state is a state in which the male connector installed on the second loading oil pipe is connected to the female connector in the quick-connect dry valve on the external tank truck, and the second shut-off valve is closed and the first shut-off valve is opened; The male connector comprises a male connector valve body, a spring bushing arranged in a valve cavity of the male connector valve body, a movable valve sleeve is sleeved in the spring bushing, and the end of the movable valve sleeve is connected to a movable valve flap for closing the liquid inlet of the valve cavity of the male connector valve body; a return spring is arranged in the spring bushing and the movable valve sleeve; one end of the return spring abuts against the bottom of the spring bushing, and the other end abuts against the movable valve flap; a vent hole is correspondingly arranged at the connection between the spring bushing and the male connector valve body, and the vent hole is communicated with the inside of the spring bushing; a spiral guide groove is arranged on the outer wall of the male connector valve body; The chamber of the spring bushing includes a reduced diameter section and an expanded diameter section, wherein the inner diameter of the expanded diameter section is larger than the inner diameter of the reduced diameter section; the movable valve sleeve is sleeved on the reduced diameter section, so the outer diameter of the movable valve sleeve matches the inner diameter of the reduced diameter section, and the vent hole is connected to the expanded diameter section.

2. A bottom-loading heavy oil loading and parking system according to claim 1, characterized in that: The reflux pump is used to transport the heavy oil in the parking circulation loop.

3. A bottom-loading heavy oil loading and parking system according to claim 1, characterized in that: Also included is a male connector plugging cap for plugging the male connector; The male joint plugging cap includes a male joint plugging cap, the male joint plugging cap is provided with a snap-fitting groove, the inner wall of the snap-fitting groove is provided with a plugging cap roller that cooperates with the spiral guide groove, the plugging cap roller is rotatably connected in the snap-fitting groove through the plugging cap roller shaft; the bottom of the snap-fitting groove is provided with a scraper mounting groove, a plugging cap connecting plate is installed in the scraper mounting groove, the plugging cap connecting plate is provided with a plugging cap scraper capable of scraping dirt on the inner wall of the liquid inlet of the valve cavity of the male joint valve body and the movable valve disc on the side facing away from the scraper mounting groove, the plugging cap scraper is provided with a plugging cap connecting rod extending out of the male joint plugging cap on the side facing the scraper mounting groove, a plugging cap connecting rod is provided with a plugging cap handle, the plugging cap handle and the plugging cap connecting rod are fixed by a plugging cap anti-rotation pin, and a plugging cap reset wave spring is provided between the plugging cap connecting rod and the scraper mounting groove.

4. A bottom-loading heavy oil loading and parking system according to claim 1, characterized in that: The female joint comprises a female joint valve body, a liquid outlet sleeve of the valve cavity of the female joint valve body is provided with a sliding valve sleeve, and a third wear-resistant descaling ring is provided between the sliding valve sleeve and the valve cavity of the female joint valve body; a support frame is provided on the inner wall of the valve cavity of the female joint valve body, a fixed valve stem is connected to the support frame, and the end of the fixed valve stem is provided with a fixed valve disc for closing the liquid outlet of the sliding valve sleeve; a shell for connecting with the male joint is sleeved on the outer wall of the female joint valve body, and the shell is rotatably connected to the outer wall of the female joint valve body; a wear-resistant sleeve is provided between the shell and the female joint valve body, a fourth wear-resistant descaling ring is provided between the shell and the sliding valve sleeve, and a return spring is provided between the wear-resistant sleeve and the fourth wear-resistant descaling ring; a joint roller matching the spiral guide groove is provided on the inner wall of the shell, the joint roller is rotatably connected to the inner wall of the shell through a joint roller shaft, and a handle is fixedly connected to the outer wall of the shell.

5. A bottom-loading heavy oil loading and parking system according to claim 4, characterized in that: Also included is a female connector plug for plugging the female connector; The female joint plug includes a female joint plug, the outer wall of the plugging end of the female joint plug is provided with a limiting semi-ring groove which cooperates with the joint roller, the plugging end of the female joint plug is provided with an installation groove, a plugging connecting plate is provided in the installation groove, the plugging connecting plate is fixedly connected to a plugging scraper which can scrape dirt on the inner wall of the liquid outlet of the shell, the sliding valve sleeve end and the fixed valve disc end on one side of the plugging connecting plate facing the plugging end, a plugging connecting rod extending out of the female joint plug is provided on the side of the plugging connecting plate facing away from the plugging end, the end of the plugging connecting rod is covered with a plugging handle and fixed by a plugging anti-rotation pin, and a plugging reset wave spring is provided on the side of the plugging connecting plate facing away from the plugging end and at the bottom of the installation groove.

6. A method for using the bottom-loading heavy oil loading and parking system according to any one of claims 1 to 5, characterized in that: The method of use includes a loading part and a docking part; In the loading part, one end of the first loading oil pipe is connected to the external loading oil manifold, the male connector installed on the second loading oil pipe is connected to the female connector in the quick-connect dry valve on the external tank truck, the second shut-off valve, the second electric heat tracing and the reflux pump are closed, and the first shut-off valve, the first electric heat tracing and the loading pump are opened to complete the loading operation; When in the docking part and the outside temperature is lower than the set threshold, the male connector installed on the second loading oil circuit pipe is connected to the female connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, and the second shut-off valve, the second electric heating and the reflux pump are opened to connect the second loading oil circuit pipe and the docking system pipeline to form a docking circulation loop, and to prevent the heavy oil in the docking circulation loop from condensing.

7. The method for using the bottom-loading heavy oil loading and parking system according to claim 6, characterized in that: Also includes: When in the docking part and the outside temperature is not lower than the set threshold, the male connector installed on the second loading oil line pipe is connected to the female connector installed on the docking system pipeline, the first shut-off valve, the first electric heating and the loading pump are closed, and the second shut-off valve and the second electric heating are opened to connect the second loading oil line pipe and the docking system pipeline to form a docking circulation loop, and to prevent the heavy oil in the docking circulation loop from condensing.

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